/* Shared styles for the V8 training application. */

.course-guide {
  width: 100%;
  max-width: 72rem;
  margin-inline: auto;
}

.course-guide .page-heading p {
  max-width: 70ch;
}

.course-guide-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  padding-block: 0.75rem;
  border-block: 1px solid var(--border);
}

.course-guide-nav a {
  padding-block: 0.4rem;
}

.course-guide-section {
  padding-block: 2rem;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 6rem;
}

.course-guide-section > p,
.course-sequence > li > p {
  max-width: 78ch;
  line-height: 1.7;
}

.course-guide h2,
.course-guide h3,
.course-guide h4 {
  margin: 0 0 0.7rem;
}

.course-checks,
.course-reading-list {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.course-checks article {
  min-width: 0;
  padding: 1.25rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.course-checks pre {
  overflow-x: auto;
  padding: 1rem;
  color: var(--text);
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: var(--type-copy);
  line-height: 1.6;
}

.course-checks details {
  margin-top: 1rem;
  border-top: 1px solid var(--border);
}

.course-checks summary {
  padding-block: 0.8rem;
  color: var(--accent-strong);
  cursor: pointer;
}

.course-checks details p {
  margin-top: 0;
}

.course-sequence {
  padding-left: 1.5rem;
}

.course-sequence > li {
  padding-left: 0.75rem;
  margin-block: 1.5rem;
}

.course-sequence > li::marker,
.course-components > li::marker {
  color: var(--accent-strong);
  font-weight: 700;
}

.course-components {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem 2rem;
  padding: 1rem 0 1rem 1.5rem;
}

.course-components p {
  margin: 0;
}

.course-reading-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.course-reading-list article {
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.course-reading-list p {
  margin-bottom: 0;
}

.course-revision {
  overflow-wrap: anywhere;
}

.course-readiness > div {
  display: grid;
  grid-template-columns: 14rem minmax(0, 1fr);
  gap: 1rem;
  padding-block: 1rem;
  border-bottom: 1px solid var(--border);
}

.course-readiness dt {
  font-weight: 600;
}

.course-readiness dd {
  margin: 0;
}

@media (max-width: 720px) {
  .course-components,
  .course-reading-list,
  .course-readiness > div {
    grid-template-columns: minmax(0, 1fr);
  }

  .course-guide .page-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 1rem;
  }
}

:root {
  --bg: #09090d;
  --panel: #13131c;
  --panel-inset: #101017;
  --panel-bright: #181722;
  --border: #2b2834;
  --border-strong: #45404f;
  --text: #efedf4;
  /* Keep all ordinary copy at one readable foreground color. These aliases
     remain so existing components inherit the unified treatment. */
  --text-dim: var(--text);
  --text-faint: var(--text);
  --chrome-subtle: #787381;
  --diagram-neutral: #aaa6b3;
  --accent: #c15cff;
  --accent-strong: #d68cff;
  --accent-secondary: #81c7ff;
  --accent-gold: #ffbd66;
  --accent-ink: #100716;
  --good: #78d6b1;
  --bad: #ff7096;
  --warning: var(--accent-gold);
  --danger: var(--bad);
  --muted-bar: #34313c;
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --type-meta: 0.68rem;
  --type-label: 0.72rem;
  --type-small: 0.82rem;
  --type-copy: 0.88rem;
  --copy-line-height: 1.55;
  --panel-padding: 1.15rem;
  --control-font-size: 0.88rem;
  --control-line-height: 1.45;
  --notice-width: min(24rem, calc(100vw - 2rem));
  --overlay-shadow: 0 1rem 2.8rem rgb(0 0 0 / 45%);
  --radius: 0.3rem;
  --radius-small: var(--radius);
  --editor-height: 46rem;
  --code-bg: #0b0b10;
  --tok-keyword: #c792ea;
  --tok-function: #82aaff;
  --tok-string: #c3d87b;
  --tok-number: #f78c6c;
  --tok-preprocessor: #f0b06a;
  --tok-type: #7fdbca;
  --tok-constant: #ffcb6b;
  --tok-operator: #89ddff;
  --topbar-bg: rgb(9 9 13 / 92%);
  --topbar-border: rgb(193 92 255 / 35%);
  color-scheme: dark;
}

/* Dark remains the default. Only an explicit choice changes the theme, and
   every literal dark token has a light counterpart below. */
:root[data-theme="light"] {
  --bg: #e9e6f1;
  --panel: #ffffff;
  --panel-inset: #f1eef8;
  --panel-bright: #faf8fd;
  --border: #d2cae1;
  --border-strong: #a596c0;
  --text: #17131f;
  --chrome-subtle: #5b5270;
  --diagram-neutral: #473e5e;
  --accent: #8a1fd0;
  --accent-strong: #6a12a8;
  --accent-secondary: #0b62c4;
  --accent-gold: #964d00;
  --accent-ink: #ffffff;
  --good: #0a6e3f;
  --bad: #c40f4f;
  --warning: var(--accent-gold);
  --danger: var(--bad);
  --muted-bar: #cec5de;
  --overlay-shadow: 0 1rem 2.8rem rgb(25 21 33 / 18%);
  --code-bg: #f4f1fa;
  --tok-keyword: #9013c9;
  --tok-function: #0b62c4;
  --tok-string: #2f6a12;
  --tok-number: #b03a00;
  --tok-preprocessor: #964d00;
  --tok-type: #006b60;
  --tok-constant: #8a5a00;
  --tok-operator: #0d5f7d;
  --topbar-bg: rgb(255 255 255 / 92%);
  --topbar-border: rgb(138 31 208 / 30%);
  color-scheme: light;
}

/* Component campaigns, evidence metrics, local identity, and impact gate. */
.topbar-account,
.topbar-account form {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.topbar-account {
  color: var(--text-dim);
  font-size: 0.7rem;
}

/* The toggle sits beside the account block, and stays put when there is no
   account block (the deliberately unauthenticated local console). */
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.theme-toggle,
.topbar-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.9rem;
  height: 1.9rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: transparent;
  color: var(--chrome-subtle);
  cursor: pointer;
}

.theme-toggle:hover,
.topbar-icon-btn:hover {
  border-color: var(--border-strong);
  color: var(--text);
}

.theme-toggle:focus-visible,
.topbar-icon-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* The report button is the only .topbar-icon-btn, and it reads as an alert
   rather than a setting, so it carries the warning colour in both themes. */
.topbar-icon-btn {
  color: var(--bad);
  border-color: color-mix(in srgb, var(--bad) 38%, var(--border));
}

.topbar-icon-btn:hover {
  color: var(--bad);
  border-color: var(--bad);
  background: color-mix(in srgb, var(--bad) 10%, transparent);
}

.topbar-icon-btn:focus-visible {
  outline-color: var(--bad);
}

.theme-icon {
  width: 1rem;
  height: 1rem;
}

/* Show the mode the button switches to, not the one already active. */
.theme-icon-moon,
:root[data-theme="light"] .theme-icon-sun {
  display: none;
}

:root[data-theme="light"] .theme-icon-moon {
  display: block;
}

.topbar-account a,
.topbar-account button {
  border: 0;
  background: transparent;
  color: var(--accent-secondary);
  font: inherit;
  cursor: pointer;
}

.auth-form { display: grid; gap: 1rem; margin-top: 1.5rem; }
.auth-form label,
.impact-form > label,
.impact-grid label,
.stage-form label { display: grid; gap: 0.38rem; color: var(--text-dim); font-size: 0.72rem; }
.form-error { color: var(--bad); }
.form-notice { color: var(--accent-gold); }
.auth-alt-action { margin-top: 0.9rem; text-align: center; font-size: 0.78rem; }
.auth-alt-action a { color: var(--text-dim); }
.auth-alt-action a:hover { color: var(--text); }

.campaign-heading,
.page-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.campaign-heading h1,
.page-heading h1 { margin: 0.25rem 0; }
.campaign-heading p,
.page-heading p { max-width: 54rem; margin: 0; color: var(--text-dim); }

.campaign-main { display: grid; gap: 1rem; min-width: 0; }
.gate-panel { padding: var(--panel-padding); }
.gate-heading { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.gate-heading h2 { margin: 0.2rem 0; }
.gate-criteria { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.5rem; margin: 0.9rem 0; }
.gate-criteria > div { display: flex; gap: 0.55rem; align-items: center; padding: 0.65rem; border: 1px solid var(--border); color: var(--text-dim); }
.gate-criteria > div.is-passed { border-color: color-mix(in srgb, var(--good) 55%, var(--border)); color: var(--text); }
.gate-criteria > div > span { color: var(--accent-secondary); }
.checkpoint-entry,
.checkpoint-history { margin-top: 0.85rem; border-top: 1px solid var(--border); padding-top: 0.75rem; }
.checkpoint-entry > summary,
.checkpoint-history > summary { cursor: pointer; color: var(--accent-secondary); }
.checkpoint-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; margin-top: 0.8rem; }
.checkpoint-form label { display: grid; gap: 0.35rem; color: var(--text-dim); font-size: 0.72rem; }
.checkpoint-form label:last-of-type { grid-column: 1 / -1; }
.checkpoint-history > div { display: grid; gap: 0.55rem; margin-top: 0.8rem; }
.checkpoint-history article { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0.35rem 0.8rem; align-items: center; padding: 0.75rem; background: var(--panel-bright); }
.checkpoint-history article > div { display: flex; gap: 0.65rem; }
.checkpoint-history article p,
.checkpoint-history article small { grid-column: 1 / -1; margin: 0; color: var(--text-dim); }
.campaign-control { display: flex; justify-content: space-between; gap: 1.3rem; align-items: center; padding: var(--panel-padding); }
.campaign-control h2 { margin: 0.2rem 0; }
.campaign-control p { max-width: 48rem; margin: 0; color: var(--text-dim); }
.training-capacity-note {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.75rem 0.9rem;
  border-left: 3px solid var(--accent-gold);
  background: color-mix(in srgb, var(--accent-gold) 7%, transparent);
  color: var(--text);
  font-size: 0.76rem;
}
.training-capacity-note.is-unavailable { border-left-color: var(--danger); }
.training-capacity-note span { line-height: 1.5; }
.stage-form { display: flex; gap: 0.5rem; align-items: end; min-width: 18rem; }

.prerequisite-list { display: grid; }
.prerequisite-list a { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 0.6rem; padding: 0.55rem 0; border-bottom: 1px solid var(--border); color: var(--text); }
.prerequisite-list a div { display: grid; }
.prerequisite-list small { color: var(--text-dim); }
.status-dot { width: 0.55rem; height: 0.55rem; border-radius: 50%; background: var(--border-strong); }
.status-dot.is-partial { background: var(--accent-gold); }
.status-dot.is-ready { background: var(--good); }

.impact-form { display: grid; gap: 0.9rem; }
.impact-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; }
.current-finding-impact {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.current-finding-impact-head { margin-bottom: 0.85rem; }
.current-finding-impact-head h4 { margin: 0.2rem 0 0; }

@media (max-width: 1000px) {
  .impact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
  .campaign-heading,
  .page-heading,
  .campaign-control { align-items: stretch; flex-direction: column; }
  .impact-grid,
  .gate-criteria,
  .checkpoint-form { grid-template-columns: 1fr; }
  .stage-form { min-width: 0; }
  .topbar-account .account-identity { display: none; }
}

/* Role homes and authentication surfaces. */
.topbar-account { padding-left: 0.8rem; border-left: 1px solid var(--border); }
.account-avatar { display: inline-grid; width: 1.8rem; height: 1.8rem; place-items: center; flex: 0 0 auto; border: 1px solid color-mix(in srgb, var(--accent) 55%, var(--border)); border-radius: 50%; background: color-mix(in srgb, var(--accent) 13%, var(--panel)); color: var(--accent-strong); font-weight: 800; }
.account-identity { display: grid; line-height: 1.1; }
.account-identity strong { color: var(--text); font-size: 0.72rem; }
.account-identity small { color: var(--text-faint); font-size: 0.6rem; }
.topbar-account form { margin-left: 0.25rem; }

.auth-page { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(22rem, 0.75fr); width: min(68rem, 100%); min-height: min(42rem, calc(100vh - 8rem)); margin: 2.5rem auto; overflow: hidden; border: 1px solid var(--border); border-radius: 0.75rem; background: var(--panel); box-shadow: 0 2rem 6rem rgb(0 0 0 / 35%); }
.auth-card { display: flex; flex-direction: column; justify-content: center; padding: clamp(2rem, 4vw, 3.5rem); }
.auth-card-heading h2 { margin: 0.35rem 0; font-size: 1.8rem; }
.auth-card-heading p { margin: 0; color: var(--text-dim); line-height: 1.6; }
.bootstrap-notice { display: grid; gap: 0.35rem; margin-top: 1.2rem; padding: 0.8rem; border: 1px solid color-mix(in srgb, var(--accent-gold) 55%, var(--border)); background: color-mix(in srgb, var(--accent-gold) 9%, transparent); }
.bootstrap-notice span { overflow-wrap: anywhere; color: var(--text-dim); font-size: 0.7rem; }
.auth-login-form { gap: 1.15rem; margin-top: 1.8rem; }
.auth-login-form > label { gap: 0.5rem; color: var(--text); font-weight: 650; }
.auth-control { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; min-height: 3.2rem; padding: 0 0.85rem; border: 1px solid var(--border-strong); border-radius: 0.45rem; background: var(--panel-inset); transition: border-color 140ms ease, box-shadow 140ms ease; }
.auth-control:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent); }
.auth-control > span { color: var(--text-faint); font-family: var(--font-mono); }
.auth-control input { width: 100%; min-height: 3rem; border: 0; outline: 0; background: transparent; box-shadow: none; font-size: var(--control-font-size); }
.auth-control input:focus { border: 0; box-shadow: none; }
.password-toggle { border: 0; background: transparent; color: var(--accent-secondary); font-size: 0.68rem; cursor: pointer; }
.auth-submit { min-height: 3.2rem; margin-top: 0.25rem; }
.admin-alert, .reentry-banner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; margin-bottom: 1rem; padding: 1.1rem; border-color: color-mix(in srgb, var(--accent-gold) 55%, var(--border)); }
.admin-alert h2, .reentry-banner h2 { margin: 0.2rem 0; }
.admin-alert p, .reentry-banner p { margin: 0; color: var(--text-dim); }
.admin-section { padding: 1.15rem; }
.admin-section h2 { margin: 0.25rem 0 0.8rem; }
.admin-section-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.admin-action-list { display: grid; }
.admin-decoy-diff { max-height: 48rem; margin: 1rem 0 0; padding: 1rem; overflow: auto; border: 1px solid var(--border); background: var(--code-bg); color: var(--text); font-size: 0.69rem; line-height: 1.5; white-space: pre; }
.admin-probe-evidence { margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.admin-probe-evidence h3 { margin: 0.25rem 0; }
.admin-probe-evidence p { margin: 0; }
.admin-action-list form, .admin-action-row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.75rem 0; border-bottom: 1px solid var(--border); }
.admin-action-list form > div, .admin-action-row > div { display: grid; gap: 0.2rem; }
.admin-action-list span, .admin-action-row span { color: var(--text-dim); font-size: 0.7rem; }
.compact-auth-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.compact-auth-form label:last-of-type { grid-column: 1 / -1; }
.password-form { grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 0; }
.password-form .form-error, .password-form button { grid-column: 1 / -1; }
.admin-job-list { display: grid; }
.admin-job-list > div { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 1rem; padding: 0.6rem 0; border-bottom: 1px solid var(--border); color: var(--text-dim); }

.reentry-banner > div { display: grid; gap: 0.5rem; }

@media (max-width: 1000px) {
  .auth-page { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .auth-page { margin: 0 auto; border-radius: 0; }
  .auth-card { min-height: calc(100vh - 7rem); padding: 1.4rem; }
  .account-identity { display: none; }
.admin-alert, .reentry-banner { align-items: stretch; flex-direction: column; }
.compact-auth-form, .password-form { grid-template-columns: 1fr; }
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.editor-is-expanded {
  overflow: hidden;
}

code,
.mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

a {
  color: var(--accent-secondary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent-secondary);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.65rem 0.9rem;
  background: var(--text);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  transform: translateY(-150%);
}

.skip-link:focus {
  color: var(--bg);
  transform: translateY(0);
}

input[type="text"],
input[type="number"],
input[type="search"],
select,
textarea {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--panel-bright);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--control-font-size);
  font-weight: 400;
  letter-spacing: 0;
  line-height: var(--control-line-height);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-faint);
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  opacity: 0.48;
}

input[type="checkbox"],
input[type="radio"],
input[type="range"] {
  accent-color: var(--accent);
}

/* ---------------------------------------------------------------------- */
/* Topbar                                                                  */
/* ---------------------------------------------------------------------- */

.topbar {
  border-bottom: 1px solid var(--topbar-border);
  background: var(--topbar-bg);
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-inner {
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 1420px;
  min-height: 4.2rem;
  margin: 0 auto;
  padding: 0 1.5rem;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text);
  font-size: 0.82rem;
  text-transform: uppercase;
}

.brand:hover {
  text-decoration: none;
}

.brand img {
  width: 1.3rem;
  height: 1.65rem;
}

.brand-product {
  padding-left: 0.65rem;
  border-left: 1px solid var(--border-strong);
  color: var(--text-dim);
  font-weight: 400;
  letter-spacing: 0.06em;
}

.topnav {
  display: flex;
  gap: 1.25rem;
  margin-left: auto;
}

.topnav a {
  font-family: var(--font-mono);
  color: var(--text-dim);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.topnav a::before {
  content: "/";
  color: var(--accent);
  opacity: 0;
}

.topnav a:hover,
.topnav a[aria-current="page"] {
  color: var(--text);
  text-decoration: none;
}

.topnav a:hover::before,
.topnav a[aria-current="page"]::before {
  opacity: 1;
}

@media (max-width: 640px) {
  .topbar-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 0.55rem 0.75rem;
    min-height: 0;
    padding: 0.65rem 1rem;
  }

  .topnav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: space-between;
    gap: 0.55rem;
    width: 100%;
    margin-left: 0;
    min-width: 0;
  }

  .topnav a {
    font-size: 0.68rem;
    letter-spacing: 0.04em;
    white-space: nowrap;
  }

  .brand-product {
    display: none;
  }
}

/* Signed-in profile and self-service account security. */
.account-profile-link {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.25rem;
  border-radius: 0.4rem;
  color: var(--text);
}

.topbar-account a.account-profile-link:hover,
.topbar-account a.account-profile-link[aria-current="page"] {
  background: var(--panel-bright);
  color: var(--text);
}

.account-settings {
  display: grid;
  grid-template-columns: minmax(13rem, 0.42fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  max-width: 70rem;
  margin-top: 1rem;
}

.account-summary {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding-right: clamp(0rem, 2vw, 1.5rem);
  border-right: 1px solid var(--border);
}

.account-avatar-large {
  width: 2.8rem;
  height: 2.8rem;
  font-size: 1rem;
}

.account-summary h2,
.account-security h2 {
  margin: 0.2rem 0;
}

.account-summary p,
.account-security > p {
  margin: 0;
  line-height: var(--copy-line-height);
}

.account-password-form {
  max-width: 34rem;
  margin-top: 1.2rem;
}

.account-password-form label small {
  line-height: 1.45;
}

.account-password-form button {
  justify-self: start;
}

@media (max-width: 760px) {
  .account-settings {
    grid-template-columns: 1fr;
  }

  .account-summary {
    padding-right: 0;
    padding-bottom: 1.25rem;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
}

/* Evaluation, executable labs, and current-tip evidence. */
.evaluation-chain {
  display: grid;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--border-strong);
  background: var(--panel-inset);
}

.evaluation-chain-intro h2,
.evaluation-chain-intro p,
.evaluation-chain-intro strong {
  margin: 0;
}

.evaluation-chain-intro p {
  margin-top: 0.25rem;
  color: var(--text-dim);
  font-size: var(--type-small);
}

.evaluation-chain-grid,
.audit-form-grid,
.lab-evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.evaluation-chain label,
.evaluation-rubric-form > label,
.cold-audit-work-form label,
.component-lab-form label {
  display: grid;
  gap: 0.4rem;
  color: var(--text-dim);
  font-size: var(--type-label);
}

.evaluation-impact {
  max-width: 30rem;
}

.frozen-model,
.evaluation-review-panel,
.evaluation-pending,
.reviewer-ground-truth,
.reviewer-submission,
.audit-review-evidence,
.checkpoint-review-evidence,
.review-queue-section,
.active-audit-panel,
.new-audit-panel,
.audit-history-panel,
.component-lab,
.lab-attempt-history {
  padding: clamp(1.1rem, 2.5vw, 1.5rem);
}

.frozen-model-summary,
.reviewer-facts,
.audit-summary-strip,
.lab-progress-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.frozen-model-summary {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.reviewer-facts {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.frozen-model-summary > div,
.reviewer-facts > div,
.audit-summary-strip > div,
.lab-progress-strip > div {
  display: grid;
  gap: 0.25rem;
  padding: 0.9rem;
  border-right: 1px solid var(--border);
}

.reviewer-facts > div:nth-child(2n) {
  border-right: 0;
}

.audit-summary-strip > div:last-child,
.lab-progress-strip > div:last-child,
.frozen-model-summary > div:last-child {
  border-right: 0;
}

.frozen-model-summary span,
.reviewer-facts span,
.audit-summary-strip span,
.lab-progress-strip span,
.frozen-chain article > span,
.audit-evidence-grid article > span,
.active-audit-brief article > span,
.checkpoint-evidence-sequence article > span,
.lab-contract > span {
  color: var(--text-faint);
  font: var(--type-meta) var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.frozen-model-mechanism {
  margin: 1rem 0;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.65;
}

.frozen-chain,
.audit-evidence-grid,
.active-audit-brief,
.checkpoint-evidence-sequence {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--border);
}

.frozen-chain article,
.audit-evidence-grid article,
.active-audit-brief article,
.checkpoint-evidence-sequence article {
  min-width: 0;
  padding: 0.9rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--panel-inset);
}

.frozen-chain article:nth-child(2n),
.audit-evidence-grid article:nth-child(2n),
.active-audit-brief article:nth-child(2n),
.checkpoint-evidence-sequence article:nth-child(2n) {
  border-right: 0;
}

.frozen-chain p,
.audit-evidence-grid p,
.active-audit-brief p,
.checkpoint-evidence-sequence p {
  margin: 0.35rem 0 0;
  color: var(--text-dim);
  font-size: var(--type-copy);
  line-height: var(--copy-line-height);
  overflow-wrap: anywhere;
}

.evaluation-review-intro {
  max-width: 52rem;
  margin-bottom: 1rem;
}

.evaluation-review-intro h2,
.evaluation-review-intro p {
  margin: 0.2rem 0 0;
}

.evaluation-review-intro p {
  color: var(--text-dim);
  line-height: var(--copy-line-height);
}

.evaluation-rubric-form,
.cold-audit-work-form,
.component-lab-form {
  display: grid;
  gap: 1rem;
}

.rubric-list {
  display: grid;
  border: 1px solid var(--border);
}

.rubric-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(12rem, 0.3fr);
  align-items: center;
  gap: 1rem;
  padding: 0.9rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel-inset);
}

.rubric-item:last-child {
  border-bottom: 0;
}

.rubric-item > span {
  display: grid;
  gap: 0.25rem;
}

.rubric-item > span > small {
  color: var(--text-dim);
  font-size: var(--type-small);
  line-height: var(--copy-line-height);
}

.rubric-item strong > small {
  margin-left: 0.3rem;
  color: var(--accent-gold);
  font: var(--type-meta) var(--font-mono);
  text-transform: uppercase;
}

.reviewer-rubric-item q {
  margin-top: 0.25rem;
  padding-left: 0.7rem;
  border-left: 2px solid var(--border-strong);
  color: var(--text);
  font-size: var(--type-copy);
  line-height: var(--copy-line-height);
}

.evaluation-review-actions,
.lab-run-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.evaluation-pending {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 2rem;
}

.evaluation-pending h2,
.evaluation-pending p {
  margin: 0.2rem 0 0;
}

.evaluation-pending p {
  max-width: 52rem;
  color: var(--text-dim);
  line-height: var(--copy-line-height);
}

.evaluation-due {
  display: grid;
  gap: 0.25rem;
  min-width: 12rem;
  padding: 0.85rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.evaluation-due span {
  color: var(--text-faint);
  font-size: var(--type-label);
}

.review-queue-list,
.audit-history-list,
.lab-attempt-history > div {
  display: grid;
  margin-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.review-queue-list > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.review-queue-list > a > div {
  display: grid;
  gap: 0.2rem;
}

.review-queue-list span,
.review-queue-list small {
  color: var(--text-dim);
  font-size: var(--type-small);
}

.reviewer-diffs {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

.reviewer-diffs article {
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.reviewer-diffs article > div:first-child {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--border);
}

.reviewer-diffs article span {
  color: var(--text-dim);
  font-size: var(--type-small);
}

.reviewer-diff-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.reviewer-diff-grid pre {
  min-width: 0;
  margin: 0;
  padding: 0.85rem;
  overflow: auto;
  border-right: 1px solid var(--border);
  color: var(--text-dim);
}

.reviewer-diff-grid pre:last-child {
  border-right: 0;
}

.audit-summary-strip,
.lab-progress-strip {
  margin-bottom: 1rem;
}

.audit-form-intro p {
  margin: 0.25rem 0 0;
  color: var(--text-dim);
}

.audit-form-grid label:nth-last-child(-n + 3) {
  grid-column: auto;
}

.audit-history-list article,
.lab-attempt-history article {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
}

.audit-history-head,
.audit-history-meta,
.lab-attempt-history article {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.audit-history-head > div,
.lab-attempt-history article > div {
  display: grid;
  gap: 0.15rem;
}

.audit-history-list article > p,
.lab-attempt-history article > p {
  margin: 0.55rem 0;
  color: var(--text-dim);
  font-size: var(--type-copy);
  line-height: var(--copy-line-height);
}

.audit-history-meta {
  justify-content: flex-start;
  color: var(--text-faint);
  font-size: var(--type-small);
}

.lab-foundation-gate,
.foundation-lab-handoff,
.component-lab-stage-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.lab-foundation-gate {
  margin-bottom: 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.lab-foundation-gate h2,
.lab-foundation-gate p,
.foundation-lab-handoff h3,
.foundation-lab-handoff p {
  margin: 0.2rem 0 0;
}

.lab-foundation-gate p,
.foundation-lab-handoff p {
  max-width: 52rem;
  color: var(--text-dim);
  font-size: var(--type-small);
  line-height: var(--copy-line-height);
}

.foundation-lab-handoff {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.foundation-lab-handoff h3 {
  color: var(--text);
}

.foundation-lab-handoff.is-locked .home-eyebrow {
  color: var(--text-faint);
}

.component-lab-stage-action {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.component-lab-stage-action > div {
  display: grid;
  gap: 0.15rem;
}

.component-lab-stage-action span {
  color: var(--text-dim);
  font-size: var(--type-small);
}

.component-lab-list {
  display: grid;
  gap: 1rem;
}

.foundation-concept-checks {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.foundation-concept-checks[hidden] {
  display: none;
}

.foundation-concept-checks > header {
  display: grid;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
}

.foundation-concept-checks > header strong {
  color: var(--text);
  font-size: 0.82rem;
  line-height: 1.5;
}

.foundation-concept-check {
  display: grid;
  gap: 0.65rem;
}

.foundation-concept-check + .foundation-concept-check {
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.foundation-concept-check > p {
  margin: 0;
  line-height: var(--copy-line-height);
}

.foundation-concept-check > div {
  display: grid;
  gap: 0.5rem;
}

.foundation-concept-check label {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  color: var(--text-dim);
  font-size: var(--type-copy);
  line-height: var(--copy-line-height);
}

.foundation-concept-check label:has(input:checked) {
  color: var(--text);
}

.foundation-concept-feedback {
  padding: 0.7rem;
  border-left: 2px solid var(--accent-gold);
  color: var(--text-dim);
  background: color-mix(in srgb, var(--accent-gold) 7%, transparent);
}

.foundation-concept-check.is-correct .foundation-concept-feedback {
  border-left-color: var(--good);
  background: color-mix(in srgb, var(--good) 7%, transparent);
}

.foundation-defined-term {
  display: inline-block;
  padding: 0 0.14em;
  border: 0;
  border-radius: 0.2rem;
  color: var(--text);
  background: transparent;
  font: inherit;
  text-decoration: underline dotted color-mix(in srgb, var(--accent) 70%, transparent);
  text-underline-offset: 0.2em;
  cursor: pointer;
}

.foundation-defined-term:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--accent) 11%, transparent);
}

.foundation-defined-term:focus-visible {
  outline: 2px solid var(--accent-secondary);
  outline-offset: 3px;
}

.foundation-term-popover {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 20;
  width: min(28rem, calc(100vw - 2.5rem));
  padding: 1rem;
  border: 1px solid var(--border-strong);
  background: var(--panel);
  box-shadow: var(--overlay-shadow);
}

.foundation-term-popover[hidden] {
  display: none;
}

.foundation-term-popover p {
  margin: 0.4rem 0 0.9rem;
  color: var(--text-dim);
  line-height: var(--copy-line-height);
}

.foundation-term-popover > [data-foundation-term-title] {
  display: block;
  margin-top: 0.25rem;
  font-size: 1rem;
}

.foundation-term-popover p > strong {
  color: var(--text);
}

.foundation-term-popover button {
  padding: 0;
  border: 0;
  color: var(--text);
  background: none;
  font: inherit;
  cursor: pointer;
}

.mastery-bridge,
.causal-chain-lesson {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.mastery-bridge > header,
.causal-chain-lesson > header {
  max-width: 56rem;
}

.mastery-bridge > header h3,
.causal-chain-lesson > header h3,
.mastery-bridge > header p,
.causal-chain-lesson > header p {
  margin: 0.25rem 0 0;
}

.mastery-bridge > header p,
.causal-chain-lesson > header p {
  color: var(--text-dim);
  line-height: var(--copy-line-height);
}

.mastery-bridge-lessons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 1rem;
  border: 1px solid var(--border);
}

.mastery-bridge-lessons article {
  padding: 1rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--panel-inset);
}

.mastery-bridge-lessons article:nth-child(2n) {
  border-right: 0;
}

.mastery-bridge-lessons h4,
.mastery-bridge-lessons p {
  margin: 0;
}

.mastery-bridge-lessons p {
  margin-top: 0.55rem;
  color: var(--text-dim);
  line-height: var(--copy-line-height);
}

.mastery-bridge-lessons .mastery-common-error {
  color: var(--text);
}

.causal-chain-lesson ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 1rem 0 0;
  padding: 0;
  border: 1px solid var(--border);
  list-style: none;
}

.mastery-bridge-form {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.causal-chain-lesson li {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.9rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.causal-chain-lesson li:nth-child(2n) {
  border-right: 0;
}

.causal-chain-lesson h4,
.causal-chain-lesson p,
.causal-chain-lesson small {
  margin: 0;
}

.causal-chain-lesson p,
.causal-chain-lesson small {
  display: block;
  margin-top: 0.25rem;
  color: var(--text-dim);
  line-height: var(--copy-line-height);
}

@media (max-width: 760px) {
  .mastery-bridge-lessons,
  .causal-chain-lesson ol {
    grid-template-columns: 1fr;
  }

  .mastery-bridge-lessons article,
  .causal-chain-lesson li {
    border-right: 0;
  }
}

.component-lab {
  border-color: var(--border);
}

.component-lab[hidden] {
  display: none;
}

.component-lab.is-passed {
  border-color: color-mix(in srgb, var(--good) 50%, var(--border));
}

.component-lab-form fieldset {
  display: grid;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  gap: 1rem;
}

.component-lab-form fieldset:disabled {
  opacity: 0.55;
}

.component-lab-form .lab-outcome-question {
  padding: 1rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.lab-outcome-question legend {
  padding: 0 0.4rem;
  font-weight: 700;
}

.lab-outcome-choices {
  display: grid;
  gap: 0.65rem;
}

.lab-outcome-choices label {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 0.65rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  background: var(--panel);
  cursor: pointer;
}

.lab-outcome-choices input {
  margin-top: 0.2rem;
}

.lab-outcome-result {
  font-weight: 700;
}

.component-lab-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.component-lab-heading h2,
.component-lab-heading p {
  margin: 0.2rem 0 0;
}

.component-lab-heading p {
  max-width: 52rem;
  color: var(--text-dim);
  line-height: var(--copy-line-height);
}

.lab-contract {
  margin-top: 1rem;
  padding: 0.9rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.lab-contract p {
  margin: 0.35rem 0;
  line-height: var(--copy-line-height);
}

.lab-contract small {
  display: block;
  margin-top: 0.45rem;
  color: var(--text);
  line-height: var(--copy-line-height);
}

.lab-reading-order,
.lab-post-run {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.8rem;
  padding: 0.9rem;
  border: 1px solid var(--border);
}

.lab-reading-order p,
.lab-post-run p,
.lab-post-run h3 {
  margin: 0;
  line-height: var(--copy-line-height);
}

.lab-reading-order p,
.lab-post-run p {
  color: var(--text-dim);
}

.lab-post-run[hidden] {
  display: none;
}

.lab-source,
.lab-output {
  max-height: 24rem;
  margin: 1rem 0;
  padding: 1rem;
  overflow: auto;
  border: 1px solid var(--border);
  background: var(--code-bg);
  color: var(--text-dim);
  font-size: 0.78rem;
  line-height: 1.55;
}

.lab-source code {
  display: block;
  min-width: max-content;
  color: var(--text-dim);
  font-family: var(--font-mono);
  tab-size: 2;
}

.lab-source-editor-head {
  align-items: center;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.lab-source-editor-head > span {
  font-weight: 700;
}

.lab-source [data-lab-source] {
  caret-color: var(--accent);
  display: block;
  min-height: 12rem;
  outline: 0;
  white-space: pre;
}

.lab-source:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 24%, transparent);
}

.tooling-evidence[hidden] {
  display: none;
}

.tooling-evidence {
  padding: clamp(1.1rem, 2.5vw, 1.5rem);
}

.tooling-evidence-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.tooling-evidence-heading h2,
.tooling-evidence-heading + p {
  margin: 0.2rem 0 0;
}

.tooling-compatibility-note {
  padding: 0.8rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
  line-height: var(--copy-line-height);
}

#tooling-evidence-form {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.25rem;
}

#tooling-evidence-form > fieldset {
  display: grid;
  min-width: 0;
  margin: 0;
  padding: 1rem;
  border: 1px solid var(--border);
  gap: 0.9rem;
}

#tooling-evidence-form legend {
  padding: 0 0.4rem;
  font-weight: 700;
}

#tooling-evidence-form fieldset > p {
  max-width: 70ch;
  margin: 0;
  line-height: var(--copy-line-height);
}

#tooling-evidence-form label {
  display: grid;
  gap: 0.4rem;
  min-width: 0;
  color: var(--text);
  font-size: var(--type-label);
}

.tooling-evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.tooling-evidence-wide {
  grid-column: 1 / -1;
}

.tooling-sanitizer-choices {
  display: grid;
  gap: 0.65rem;
}

.tooling-sanitizer-choices label {
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  padding: 0.75rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
  cursor: pointer;
}

.tooling-sanitizer-choices input {
  margin-top: 0.2rem;
}

.tooling-source-browser {
  min-width: 0;
  padding: 1rem;
  border: 1px solid var(--border);
  background: var(--panel);
}

.admin-review-queue {
  grid-column: 1 / -1;
}

.admin-review-section {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.admin-review-section h3,
.admin-review-section p {
  margin: 0;
}

.admin-review-section > p {
  margin-top: 0.25rem;
  max-width: 70ch;
}

.admin-review-list {
  display: grid;
  margin-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.admin-review-list > a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  min-height: 3.5rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.admin-review-list > a > div {
  display: grid;
  gap: 0.15rem;
}

.admin-review-list > a span:not(.pill) {
  font-size: 0.72rem;
}

.admin-review-held {
  opacity: 0.82;
}

@media (max-width: 900px) {
.evaluation-chain-grid,
  .audit-form-grid,
  .lab-evidence-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

}

@media (max-width: 680px) {
.evaluation-chain-grid,
  .audit-form-grid,
  .lab-evidence-grid,
  .tooling-evidence-grid,
  .frozen-chain,
  .audit-evidence-grid,
  .active-audit-brief,
  .checkpoint-evidence-sequence,
  .reviewer-facts,
  .reviewer-diff-grid {
    grid-template-columns: 1fr;
  }

  .rubric-item,
  .evaluation-pending {
    grid-template-columns: 1fr;
  }

.frozen-chain article,
  .audit-evidence-grid article,
  .active-audit-brief article,
  .checkpoint-evidence-sequence article,
  .reviewer-facts > div {
    border-right: 0;
  }

  .lab-foundation-gate,
  .foundation-lab-handoff,
  .component-lab-stage-action,
  .component-lab-heading,
  .evaluation-review-actions,
  .lab-run-actions,
  .review-queue-list > a {
    align-items: stretch;
    flex-direction: column;
  }

}

.flash {
  position: fixed;
  top: 4.75rem;
  right: 1rem;
  z-index: 60;
  display: grid;
  grid-template-columns: 0.5rem minmax(0, 1fr) 2rem;
  align-items: start;
  gap: 0.7rem;
  width: var(--notice-width);
  min-height: 4rem;
  padding: 0.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: var(--panel);
  box-shadow: var(--overlay-shadow);
  opacity: 0;
  overflow: hidden;
  pointer-events: none;
  transform: translateY(-0.4rem);
  transition: opacity 160ms ease, transform 160ms ease;
}

.flash.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.flash.is-leaving {
  pointer-events: none;
}

.flash-marker {
  width: 0.35rem;
  height: 100%;
  min-height: 2.45rem;
  border-radius: 2px;
  background: var(--accent-secondary);
}

.flash.is-success .flash-marker {
  background: var(--good);
}

.flash.is-error .flash-marker {
  background: var(--bad);
}

.flash-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.15rem;
}

.flash-copy strong {
  color: var(--text);
  font-size: 0.8rem;
  line-height: 1.35;
}

.flash-copy span {
  color: var(--text-dim);
  font-size: 0.76rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.flash.is-error .flash-copy strong {
  color: var(--bad);
}

.flash-close {
  display: grid;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: 0;
  border-radius: var(--radius);
  place-items: center;
  background: transparent;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
}

.flash-close:hover {
  background: var(--panel-bright);
  color: var(--text);
}

.job-panel {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 30;
  display: grid;
  grid-template-columns: 0.8rem minmax(12rem, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
  width: var(--notice-width);
  padding: 0.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: var(--panel);
  box-shadow: var(--overlay-shadow);
}

.app-dialog {
  width: min(30rem, calc(100vw - 2rem));
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--text);
  box-shadow: var(--overlay-shadow);
}

.bug-fields {
  display: grid;
  gap: 0.5rem;
  padding: 0 var(--panel-padding) 0.4rem;
}

.bug-fields label {
  color: var(--text);
  font-size: var(--type-label);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.bug-fields input[type="text"],
.bug-fields textarea {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel-inset);
  color: var(--text);
  font-family: inherit;
  font-size: var(--control-font-size);
  line-height: var(--control-line-height);
}

.bug-fields textarea {
  resize: vertical;
}

.bug-fields input[type="text"]:focus-visible,
.bug-fields textarea:focus-visible {
  border-color: var(--accent);
  outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent);
  outline-offset: 1px;
}

.bug-category {
  display: grid;
  gap: 0.3rem;
  margin: 0;
  padding: 0;
  border: 0;
}

.bug-category legend {
  padding: 0;
  color: var(--text);
  font-size: var(--type-label);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.bug-category label {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text);
  font-size: var(--type-small);
  letter-spacing: normal;
  text-transform: none;
}

.bug-report-detail {
  white-space: pre-wrap;
  color: var(--chrome-subtle);
}

.bug-report-row strong {
  color: var(--text);
}

.bug-optional {
  color: var(--chrome-subtle);
  text-transform: none;
}

.app-dialog::backdrop {
  /* Deliberately dark in both themes: a scrim dims the page behind a modal. */
  background: rgb(9 9 13 / 76%);
  backdrop-filter: blur(3px);
}

.app-dialog form {
  display: grid;
  gap: 1rem;
  padding: 1rem;
}

.app-dialog-copy {
  display: grid;
  gap: 0.35rem;
}

.app-dialog-copy strong {
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.app-dialog-copy p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.82rem;
  line-height: 1.5;
}

.app-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

@media (prefers-reduced-motion: reduce) {
  .flash {
    transition: none;
  }
}

@media (max-width: 640px) {
  .flash {
    top: 5.4rem;
  }
}

.job-indicator {
  width: 0.7rem;
  height: 0.7rem;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: job-spin 0.8s linear infinite;
}

.job-panel.is-complete .job-indicator {
  border-color: var(--good);
  animation: none;
}

.job-panel.is-failed .job-indicator {
  border-color: var(--bad);
  animation: none;
}

.job-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.job-copy strong {
  font-size: 0.8rem;
}

.job-copy span {
  color: var(--text-dim);
  font-size: 0.72rem;
}

@keyframes job-spin {
  to { transform: rotate(360deg); }
}

#job-title {
  color: var(--text);
  font-weight: 600;
}

/* ---------------------------------------------------------------------- */
/* Shell / panels                                                          */
/* ---------------------------------------------------------------------- */

.shell {
  width: 100%;
  min-width: 0;
  max-width: 1420px;
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}

.panel-quiet {
  background: transparent;
  border: 1px dashed var(--border-strong);
}

.panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.85rem;
}

.panel-head > * {
  min-width: 0;
}

.panel-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.65rem;
  min-width: 0;
  flex-wrap: wrap;
}

@media (max-width: 640px) {
  .shell {
    padding: 1rem;
  }

  .panel {
    padding: 0.9rem;
  }

  .panel-head {
    align-items: flex-start;
    flex-wrap: wrap;
  }
}

.panel-head h1,
.panel-head h2 {
  margin: 0;
}

.panel-meta {
  color: var(--text-dim);
  font-size: 0.82rem;
}

h1 {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  letter-spacing: 0;
}

h2 {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  letter-spacing: 0;
  color: var(--text);
}

h3 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0;
  color: var(--text-dim);
  margin: 0 0 0.6rem;
}

.meta-line {
  color: var(--text-dim);
  font-size: 0.88rem;
}

.subtle {
  color: var(--text-faint);
}

.empty {
  color: var(--text-faint);
  font-style: italic;
  font-size: 0.9rem;
}

/* ---------------------------------------------------------------------- */
/* Training home                                                          */
/* ---------------------------------------------------------------------- */

.home-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.home-header h1,
.home-header p {
  margin: 0;
}

.home-next {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1.5rem;
  padding: 1.1rem 1.25rem;
  background: var(--panel);
}

.home-next-copy h2 {
  margin: 0.2rem 0 0;
  font-size: 1.15rem;
}

.home-next-copy p {
  margin: 0.2rem 0 0;
  color: var(--text-dim);
}

.home-eyebrow {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.home-next-action,
.home-next-action form {
  margin: 0;
}

.home-next-action {
  display: grid;
  gap: 0.55rem;
}

.home-parallel-component {
  display: grid;
  gap: 0.3rem;
}

.home-parallel-component small {
  color: var(--text-faint);
  font-size: var(--type-meta);
  text-align: center;
}

.btn-primary-action {
  min-width: 9rem;
  min-height: 2.35rem;
  justify-content: center;
  font-size: 0.76rem;
}

.home-open-work {
  border-top: 1px solid var(--border);
}

.home-section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0 0.55rem;
}

.home-section-head h2 {
  margin: 0;
  font-size: 0.9rem;
}

.home-section-head > span {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.home-case-list {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.home-case-row {
  display: grid;
  grid-template-columns: minmax(12rem, 0.7fr) minmax(20rem, 1.3fr) 10rem auto;
  align-items: center;
  gap: 1.25rem;
  min-height: 4.6rem;
  padding: 0.7rem 0.25rem;
  border-bottom: 1px solid var(--border);
}

.home-case-row:last-child {
  border-bottom: 0;
}

.home-case-identity,
.home-case-next {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.home-case-identity > span {
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.66rem;
}

.home-case-identity strong,
.home-case-next strong {
  font-size: 0.82rem;
}

.home-case-next > span,
.home-case-support {
  color: var(--text-dim);
  font-size: 0.75rem;
}

.home-case-support {
  text-align: right;
}

.home-secondary-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

@media (max-width: 860px) {
.home-next {
    grid-template-columns: 1fr;
  }

  .home-next {
    min-height: 0;
    gap: 1.25rem;
  }

  .home-next-action,
  .home-next-action form,
  .btn-primary-action {
    width: 100%;
  }

  .home-case-row {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.6rem 1rem;
  }

  .home-case-next,
  .home-case-support {
    grid-column: 1 / -1;
    text-align: left;
  }
}

.kv-grid.compact {
  grid-template-columns: repeat(auto-fill, minmax(8rem, 1fr));
  gap: 0.7rem 1rem;
}

.inline-job-form {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 0.5rem;
}

.inline-job-form label {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  color: var(--text-dim);
  font-size: 0.78rem;
}

.inline-job-form input[type="number"],
.inline-job-form input[type="text"] {
  width: 9rem;
  font-family: var(--font-sans);
  font-size: var(--control-font-size);
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: var(--panel);
  color: var(--text);
}

/* ---------------------------------------------------------------------- */
/* Tables / pills                                                          */
/* ---------------------------------------------------------------------- */

.backlog-board {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.backlog-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}

.backlog-header h1,
.backlog-header p {
  margin: 0;
}

.backlog-header p {
  margin-top: 0.2rem;
}

.stage-control {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.stage-control legend {
  margin-bottom: 0.25rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.segmented-control {
  display: inline-grid;
  grid-template-columns: repeat(3, minmax(5.5rem, 1fr));
  padding: 0.2rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--panel-inset);
}

.segmented-control label {
  position: relative;
  min-width: 0;
  cursor: pointer;
}

.segmented-control input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.segmented-control span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 1.85rem;
  padding: 0.25rem 0.6rem;
  border-radius: calc(var(--radius) - 0.08rem);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.segmented-control input:checked + span {
  background: color-mix(in srgb, var(--accent) 17%, var(--panel-bright));
  color: var(--text);
}

.segmented-control input:focus-visible + span {
  outline: 2px solid var(--accent-secondary);
  outline-offset: 2px;
}

.backlog-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1.5rem;
  padding: 1.2rem 1.25rem;
}

.backlog-next-title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-top: 0.2rem;
}

.backlog-next-title h2 {
  margin: 0;
  font-size: 1.15rem;
}

.backlog-component {
  margin: 0.25rem 0 0;
  color: var(--text);
  font-weight: 600;
}

.backlog-component span {
  margin-left: 0.35rem;
  color: var(--text-dim);
  font-weight: 400;
}

.backlog-rationale {
  max-width: 64rem;
  margin: 0.45rem 0 0;
  color: var(--text-dim);
}

.candidate-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  margin: 0.6rem 0 0;
}

.candidate-facts div {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
}

.candidate-facts dt {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.candidate-facts dd {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.78rem;
}

.backlog-next-action .btn {
  min-width: 8.5rem;
}

.backlog-catalog {
  border-top: 1px solid var(--border);
}

.backlog-catalog-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0 0.65rem;
}

.backlog-catalog-head h2 {
  margin: 0;
}

.candidate-group {
  border-top: 1px solid var(--border);
}

.candidate-group:last-child {
  border-bottom: 1px solid var(--border);
}

.candidate-group summary {
  padding: 0.75rem 0.25rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.candidate-group[open] summary {
  color: var(--text);
}

.candidate-group summary::marker {
  color: var(--accent);
}

.candidate-group-count {
  float: right;
  color: var(--text-faint);
  font-size: 0.72rem;
  font-weight: 400;
}

.candidate-list {
  border-top: 1px solid var(--border);
}

.candidate-row {
  display: grid;
  grid-template-columns: minmax(11rem, 0.8fr) minmax(0, 2fr) auto;
  align-items: center;
  gap: 1.25rem;
  padding: 0.85rem 0.25rem;
  border-bottom: 1px solid var(--border);
}

.candidate-row:last-child {
  border-bottom: 0;
}

.candidate-identity {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.candidate-identity span {
  margin-top: 0.15rem;
  color: var(--text-dim);
  font-size: 0.82rem;
}

.candidate-summary {
  min-width: 0;
}

.candidate-summary-head {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  min-width: 0;
}

.candidate-summary p {
  margin: 0.12rem 0 0;
  overflow: hidden;
  color: var(--text-dim);
  font-size: 0.84rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.candidate-metrics {
  display: block;
  margin-top: 0.18rem;
  color: var(--text-faint);
  font-size: 0.68rem;
}

.candidate-action {
  white-space: nowrap;
}

.candidate-group-empty {
  margin: 0;
  padding: 0.85rem 0.25rem;
}

.backlog-completed {
  margin-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.candidate-row-completed {
  opacity: 0.9;
}

@media (max-width: 760px) {
  .backlog-header {
    align-items: stretch;
    flex-direction: column;
  }

  .stage-control,
  .segmented-control {
    width: 100%;
  }

  .segmented-control {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .backlog-next {
    grid-template-columns: minmax(0, 1fr);
    gap: 1rem;
  }

  .backlog-next-action .btn {
    width: 100%;
  }

  .backlog-catalog-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.15rem;
  }

  .candidate-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.65rem;
  }

  .candidate-summary p {
    overflow: visible;
    text-overflow: clip;
    white-space: normal;
  }

  .candidate-action .btn {
    width: 100%;
  }
}

.pill {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.5;
  text-transform: uppercase;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
  overflow-wrap: normal;
  white-space: nowrap;
}

.pill-review,
.pill-intermediate {
  border-color: color-mix(in srgb, var(--accent) 58%, var(--border));
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  color: var(--accent-strong);
}

.pill-found,
.pill-started,
.pill-starter {
  border-color: color-mix(in srgb, var(--good) 58%, var(--border));
  background: color-mix(in srgb, var(--good) 7%, transparent);
  color: var(--good);
}

.pill-not_found,
.pill-advanced,
.pill-abandoned {
  border-color: color-mix(in srgb, var(--bad) 58%, var(--border));
  background: color-mix(in srgb, var(--bad) 7%, transparent);
  color: var(--bad);
}

/* ---------------------------------------------------------------------- */
/* Buttons                                                                 */
/* ---------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.3rem;
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: var(--panel-inset);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover {
  border-color: var(--accent-secondary);
  color: var(--text);
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.btn-accent:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: var(--accent-ink);
}

.btn-danger {
  border-color: var(--bad);
  color: var(--bad);
}

.btn-danger:hover {
  background: color-mix(in srgb, var(--bad) 10%, transparent);
  color: var(--bad);
}

.btn-identify {
  border-color: var(--good);
  color: var(--good);
  font-weight: 600;
}

.btn-identify:hover {
  background: color-mix(in srgb, var(--good) 11%, transparent);
  color: var(--good);
}

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text-dim);
}

.btn-rung {
  margin-left: auto;
}

/* ---------------------------------------------------------------------- */
/* Cockpit header                                                          */
/* ---------------------------------------------------------------------- */

#cockpit {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  min-width: 0;
}

.cockpit-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.identity h1 {
  margin: 0 0 0.35rem;
}

.identity-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin: 0;
}

.identity-meta div {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.identity-meta dt {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-faint);
}

.identity-meta dd {
  margin: 0;
  color: var(--text);
}

.timer-block {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.3rem;
}

.timer-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-faint);
}

.timer {
  font-size: 1.6rem;
  color: var(--accent-secondary);
  font-variant-numeric: tabular-nums;
}

.study-progress {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.study-progress li {
  min-width: 0;
  border-bottom: 2px solid var(--border);
}

.study-progress > li > a,
.study-progress > li > span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.8rem;
  padding: 0.4rem 0.5rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.study-progress > li > a:hover {
  color: var(--text);
  text-decoration: none;
}

.study-progress > li > a > span,
.study-progress > li > span > b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.35rem;
  height: 1.35rem;
  flex: 0 0 1.35rem;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  color: var(--text-faint);
  font-size: 0.64rem;
  font-style: normal;
}

.study-progress li.is-current {
  border-bottom-color: var(--accent);
}

.study-progress li.is-current > a,
.study-progress li.is-current > span {
  color: var(--text);
}

.study-progress li.is-current > a > span,
.study-progress li.is-current > span > b {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}

.study-progress li.is-complete {
  border-bottom-color: color-mix(in srgb, var(--good) 62%, var(--border));
}

.study-progress li.is-complete > a,
.study-progress li.is-complete > span {
  color: var(--good);
}

.study-progress li.is-complete > a > span,
.study-progress li.is-complete > span > b {
  border-color: var(--good);
  color: var(--good);
}

.study-phase-number {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.study-phase-head {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding-top: 0.25rem;
  scroll-margin-top: 5.5rem;
}

.study-phase-head h2,
.study-phase-head .panel-meta {
  margin: 0;
}

.study-phase-head > div {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  min-width: 0;
}

@media (max-width: 640px) {
  .cockpit-header {
    flex-direction: column;
  }

  .timer-block {
    width: 100%;
    align-items: flex-start;
  }

  .study-progress > li > a,
  .study-progress > li > span {
    justify-content: center;
    min-height: 2.5rem;
    padding: 0.35rem 0.15rem;
    font-size: 0.6rem;
  }

  .study-progress > li > a > span,
  .study-progress > li > span > b {
    display: none;
  }

  .study-phase-head > div {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.1rem;
  }
}

/* ---------------------------------------------------------------------- */
/* Worktree code browser                                                   */
/* ---------------------------------------------------------------------- */

.worktree-browser-panel {
  margin-top: 0;
}

.worktree-browser-panel.is-expanded {
  position: fixed;
  inset: 1rem;
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding: 1rem;
  box-shadow: 0 1.5rem 4rem rgb(0 0 0 / 45%);
}

.worktree-browser-panel.is-expanded .code-browser {
  flex: 1;
  min-height: 0;
}

.worktree-browser-panel.is-expanded .code-browser-grid {
  height: 100%;
  min-height: 0;
  max-height: none;
}

.worktree-browser-panel .panel-meta {
  max-width: 58rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.starter-routes,
.code-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.starter-routes {
  align-items: center;
  margin-bottom: 0.75rem;
}

.starter-route {
  align-items: center;
  max-width: min(100%, 32rem);
  text-align: left;
}

.starter-route-kind {
  flex: none;
  padding-right: 0.5rem;
  border-right: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.68rem;
  font-weight: 600;
  line-height: 1.1;
  text-transform: uppercase;
}

.starter-route-name {
  min-width: 0;
  overflow-wrap: anywhere;
}

.starter-label {
  color: var(--text-dim);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.model-panel {
  scroll-margin-top: 5.5rem;
}

.model-panel-head > div {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
}

.model-panel-head h2 {
  margin: 0;
}

.model-lock {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  color: var(--text-dim);
}

.model-lock svg {
  width: 0.95rem;
  height: 0.95rem;
}

.orientation-target {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.25rem;
}

.orientation-target dl {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin: 0;
}

.orientation-target dt {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.orientation-target dd {
  margin: 0.15rem 0 0;
  color: var(--text);
  font-weight: 600;
}

.orientation-brief {
  width: 100%;
  margin-top: 1rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.86rem;
}

.orientation-brief-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.65rem;
}

.orientation-brief h3,
.orientation-brief p {
  margin: 0;
}

.orientation-brief h3 {
  color: var(--accent-secondary);
  font-size: 0.86rem;
  font-weight: 600;
  white-space: nowrap;
}

.orientation-brief-head p {
  font-size: 0.86rem;
}

.orientation-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 1rem 0 0.85rem;
  padding: 0;
  border: 1px solid var(--border);
  list-style: none;
}

.orientation-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.65rem;
  min-width: 0;
  padding: 0.8rem 1rem;
  border-left: 1px solid var(--border);
}

.orientation-steps li:first-child {
  border-left: 0;
}

.orientation-step-number {
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
}

.orientation-steps strong {
  display: block;
  margin-bottom: 0.18rem;
}

.orientation-steps p {
  line-height: 1.45;
}

.orientation-stop {
  display: flex;
  gap: 0.65rem;
  padding-left: 0.7rem;
  border-left: 2px solid var(--good);
  font-size: 0.8rem;
}

.orientation-brief strong {
  color: var(--text);
}

.transfer-form {
  min-width: 0;
}

.transfer-form {
  background: transparent;
  padding: 0;
  border: 0;
}

.model-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  min-height: 2.3rem;
  margin-top: 0.85rem;
}

.model-actions .btn {
  min-width: 12rem;
}

@media (max-width: 860px) {
  .orientation-target {
    align-items: stretch;
    flex-direction: column;
  }

  .orientation-steps {
    grid-template-columns: 1fr;
  }

  .orientation-steps li,
  .orientation-steps li:first-child,
  .orientation-steps li:last-child {
    padding: 0.75rem 0.85rem;
    border-left: 0;
    border-bottom: 1px solid var(--border);
  }

  .orientation-steps li:last-child {
    border-bottom: 0;
  }

  .orientation-stop {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.15rem;
  }

}

.code-toolbar {
  align-items: end;
  margin-bottom: 0.85rem;
}

.code-path-label {
  display: flex;
  flex: 1 1 18rem;
  min-width: 14rem;
  flex-direction: column;
  gap: 0.2rem;
  color: var(--text-dim);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.code-path-label input,
.line-note-bar input {
  font-family: var(--font-mono);
  font-size: var(--control-font-size);
  padding: 0.38rem 0.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: var(--panel-inset);
  color: var(--text);
  text-transform: none;
  letter-spacing: 0;
}

.code-browser {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel-inset);
}

.code-browser-head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 72%, var(--panel-inset));
}

.code-browser-head {
  justify-content: space-between;
}

.code-browser-head-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
}

.code-browser-head-actions .btn {
  min-height: 1.8rem;
  padding: 0.22rem 0.55rem;
}

.code-browser-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(10rem, var(--tree-width, 18rem)) 6px minmax(0, 1fr);
  height: var(--editor-height);
  min-height: var(--editor-height);
  max-height: var(--editor-height);
  overflow: hidden;
}

.code-tree {
  overflow: auto;
  height: 100%;
  max-height: 100%;
  min-height: 0;
  min-width: 0;
  overscroll-behavior: contain;
  scrollbar-gutter: stable both-edges;
  background: color-mix(in srgb, var(--panel) 42%, var(--panel-inset));
}

.code-splitter {
  cursor: col-resize;
  background: var(--border);
}

.code-splitter:hover,
.code-splitter.is-dragging {
  background: var(--accent);
}

.editor-resize-handle {
  position: absolute;
  right: 0.35rem;
  bottom: 0.35rem;
  z-index: 30;
  width: 1.2rem;
  height: 1.2rem;
  cursor: ns-resize;
  border-right: 2px solid var(--chrome-subtle);
  border-bottom: 2px solid var(--chrome-subtle);
  border-radius: 0 0 3px;
  background:
    linear-gradient(135deg, transparent 48%, var(--chrome-subtle) 49%, var(--chrome-subtle) 53%, transparent 54%);
}

.editor-resize-handle:hover,
.editor-resize-handle.is-dragging {
  border-color: var(--accent-strong);
  background:
    linear-gradient(135deg, transparent 48%, var(--accent-strong) 49%, var(--accent-strong) 53%, transparent 54%);
}

.code-tree ul {
  list-style: none;
  margin: 0;
  padding: 0.35rem;
}

.code-entry {
  width: 100%;
  border: 0;
  border-radius: 2px;
  padding: 0.28rem 0.35rem;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-align: left;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.code-entry:hover,
.code-entry:focus-visible {
  background: var(--panel);
  color: var(--text);
}

.code-entry.is-directory {
  color: var(--accent-strong);
}

.code-pane {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.code-find-bar {
  position: absolute;
  top: 0.5rem;
  right: 1.1rem;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.4rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--panel) 92%, var(--panel-inset));
  box-shadow: 0 0.6rem 1.6rem rgb(0 0 0 / 40%);
}

.code-find-bar input {
  width: 14rem;
  min-width: 0;
  padding: 0.25rem 0.45rem;
}

.code-find-bar.has-no-match input {
  border-color: var(--bad);
}

.code-find-count {
  min-width: 3.2rem;
  text-align: center;
  font-variant-numeric: tabular-nums;
  color: var(--text-dim);
}

.code-find-bar .btn {
  padding: 0.2rem 0.5rem;
  line-height: 1;
}

mark.find-hit {
  color: inherit;
  background: color-mix(in srgb, var(--accent) 34%, transparent);
  border-radius: 2px;
}

mark.find-hit.is-current {
  color: var(--accent-ink);
  background: var(--accent-strong);
}

.code-line.is-jump-target {
  animation: jump-flash 1.6s ease-out;
}

@keyframes jump-flash {
  0%,
  30% {
    background: color-mix(in srgb, var(--accent) 40%, transparent);
  }
  100% {
    background: transparent;
  }
}

.code-pane.has-note {
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 0.5rem;
  padding: 0 0.75rem 0.75rem 0;
}

/* Smooth out deliberate jumps: in page anchors, find next/previous, and
   jump to line, which previously snapped. Drag selection opts back out in
   app.js, where an animated nudge would make selecting feel imprecise.
   Honour a reduced motion preference rather than overriding it. */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }

  .code-viewer,
  .code-tree {
    scroll-behavior: smooth;
  }
}

.code-viewer {
  grid-column: 1;
  grid-row: 1;
  margin: 0;
  overflow: auto;
  height: 100%;
  max-height: 100%;
  min-height: 0;
  min-width: 0;
  overscroll-behavior: contain;
  scrollbar-gutter: stable both-edges;
  scrollbar-width: auto;
  background: var(--panel-inset);
}

.line-note-bar {
  grid-column: 1;
  grid-row: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  max-height: 14rem;
  margin: 0;
  padding: 0.6rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--panel) 94%, var(--panel-inset));
  box-shadow: 0 0.8rem 2rem rgb(0 0 0 / 38%);
}

.line-note-context {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  min-width: 0;
  min-height: 1.5rem;
  gap: 0.5rem;
}

.line-note-context > .mono {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  color: var(--text-dim);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.line-note-bar input {
  min-width: 0;
}

.line-note-bar .btn {
  min-height: 2rem;
  margin: 0;
  padding: 0.35rem 0.65rem;
}

.code-lines {
  margin: 0;
  min-width: max-content;
  padding: 0.65rem 0 2.5rem 0;
  list-style: none;
}

.code-tabs {
  display: flex;
  gap: 0.25rem;
  overflow-x: auto;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 54%, var(--panel-inset));
  padding: 0.25rem 0.35rem 0;
  min-height: 2.1rem;
}

.code-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  max-width: 18rem;
  min-height: 1.7rem;
  border: 1px solid var(--border);
  border-bottom: 0;
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 0.22rem 0.35rem 0.25rem 0.55rem;
  background: var(--panel-inset);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  cursor: pointer;
}

.code-tab.is-active {
  background: var(--panel);
  color: var(--text);
  border-color: var(--border-strong);
}

.code-tab-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.code-tab-close {
  border: 0;
  background: transparent;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
}

.code-tab-close:hover {
  color: var(--bad);
}

.code-line {
  position: relative;
  padding: 0 0.9rem 0 4.4rem;
  color: var(--text-dim);
  white-space: pre;
  cursor: pointer;
  user-select: none;
  /* Skip layout/paint for off-screen lines so 17k-line files scroll smoothly. */
  content-visibility: auto;
  contain-intrinsic-size: auto 1.2rem;
}

.code-line-no {
  position: absolute;
  left: 0;
  top: 0;
  width: 3.6rem;
  text-align: right;
  color: var(--text-faint);
  font-size: 0.76rem;
  user-select: none;
  pointer-events: none;
}

.code-line:hover,
.code-line.is-selected {
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--text);
}

.code-line.is-highlighted {
  background: color-mix(in srgb, var(--good) 10%, transparent);
  color: var(--text);
}

.code-line.is-highlighted::before {
  content: "";
  position: absolute;
  top: 0.12rem;
  bottom: 0.12rem;
  left: 3.95rem;
  width: 0.18rem;
  border-radius: 999px;
  background: var(--good);
}

.code-line.is-highlighted.is-selected {
  background: color-mix(in srgb, var(--accent) 22%, var(--good) 16%);
}

.code-line-text {
  white-space: pre;
  user-select: text;
}

.source-context-drawer {
  position: absolute;
  z-index: 25;
  top: 2.85rem;
  right: 0;
  bottom: 0;
  width: min(29rem, 52%);
  overflow: auto;
  border-left: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--panel) 97%, var(--panel-inset));
  box-shadow: -1rem 0 2.4rem rgb(0 0 0 / 42%);
}

.source-context-drawer > header {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1rem 0.75rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.source-context-drawer h3,
.source-context-drawer h4,
.source-context-drawer p {
  margin: 0;
}

.source-context-drawer h3 {
  font-size: 1rem;
}

.source-context-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.45rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
}

.source-context-form input {
  min-width: 0;
  padding: 0.42rem 0.55rem;
  font-family: var(--font-mono);
}

.source-context-body {
  padding: 0 1rem 1rem;
}

.source-context-symbol {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.7rem 0;
  color: var(--text-faint);
  font-size: 0.75rem;
}

.source-context-symbol code {
  color: var(--text);
  font-size: 0.86rem;
}

.source-context-section {
  padding: 0.8rem 0;
  border-top: 1px solid var(--border);
}

.source-context-section:first-of-type {
  border-top: 0;
}

.source-context-section h4 {
  margin: 0.18rem 0 0.4rem;
  font-size: 0.9rem;
}

.source-context-section p {
  color: var(--text-dim);
  font-size: 0.82rem;
  line-height: 1.5;
}

.source-context-section pre {
  max-height: 13rem;
  margin: 0.6rem 0 0;
  padding: 0.65rem;
  overflow: auto;
  border: 1px solid var(--border);
  background: var(--panel-inset);
  color: var(--text-dim);
  font-size: 0.72rem;
  white-space: pre;
}

.source-context-kicker {
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
  text-transform: uppercase;
}

.source-context-inspect {
  display: grid;
  grid-template-columns: 4.25rem minmax(0, 1fr);
  gap: 0.55rem;
  margin-top: 0.55rem !important;
}

.source-context-inspect strong {
  color: var(--text);
}

.source-context-save {
  margin-top: 0.65rem;
}

.source-context-locations {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.45rem;
}

.source-context-location {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.1rem 0.55rem;
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel-inset);
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.source-context-location:hover {
  border-color: var(--accent-secondary);
}

.source-context-location > span {
  color: var(--accent-secondary);
  font-size: 0.7rem;
  text-transform: uppercase;
}

.source-context-location code {
  overflow: hidden;
  color: var(--text-dim);
  font-size: 0.7rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.source-context-location small {
  grid-column: 1 / -1;
  overflow: hidden;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.source-context-drawer > footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-faint);
  font-size: 0.72rem;
}

/* ---------------------------------------------------------------------- */
/* Foundations                                                             */
/* ---------------------------------------------------------------------- */

.foundations-page {
  position: static;
  width: 100%;
  max-width: 100rem;
  transform: none;
}

.foundations-header {
  grid-column: 1 / -1;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel-bright) 48%, var(--panel));
}

.foundations-header h1 {
  margin-top: 0.08rem;
  font-size: clamp(1.25rem, 1.7vw, 1.55rem);
}

.foundations-header p {
  max-width: 40rem;
  margin: 0 0 0.2rem;
  color: var(--text-dim);
}

.foundations-layout {
  display: grid;
  grid-template-columns: 15rem minmax(0, 1fr);
  min-height: 45rem;
  border: 1px solid var(--border);
  background: var(--panel);
}

.foundation-nav {
  border-right: 1px solid var(--border);
  background: var(--panel-inset);
  scrollbar-color: var(--border-strong) transparent;
  scrollbar-width: thin;
}

.foundation-nav::-webkit-scrollbar {
  height: 0.35rem;
}

.foundation-nav::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: var(--border-strong);
}

.foundation-nav-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.55rem;
  min-height: 3.8rem;
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
}

.foundation-nav-row:hover,
.foundation-nav-row.is-current {
  background: var(--panel-bright);
  color: var(--text);
  text-decoration: none;
}

.foundation-nav-row.is-locked {
  color: var(--text-faint);
  cursor: default;
}

.foundation-nav-row.is-locked:hover {
  background: transparent;
}

.foundation-nav-row.is-current {
  box-shadow: inset 2px 0 var(--accent);
}

.foundation-nav-row strong {
  min-width: 0;
  font-size: 0.84rem;
  line-height: 1.25;
}

.foundation-nav-status {
  padding: 0.2rem 0.38rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  line-height: 1;
  text-transform: uppercase;
}

.foundation-nav-status.is-review {
  border-color: color-mix(in srgb, var(--accent-gold) 55%, var(--border));
  color: var(--accent-gold);
}

.foundation-nav-status.is-complete,
.foundation-nav-status.is-passed {
  border-color: color-mix(in srgb, var(--good) 55%, var(--border));
  color: var(--good);
}

.foundation-main {
  min-width: 0;
  padding: 1.7rem clamp(1.25rem, 2.2vw, 2.25rem) 2.25rem;
}

.foundation-module-head {
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--border);
}

.foundation-module-head h2 {
  margin: 0.15rem 0 0.25rem;
  font-size: clamp(1.55rem, 2vw, 1.9rem);
}

.foundation-module-head p {
  max-width: none;
  margin: 0;
  color: var(--text);
  font-size: 0.92rem;
  line-height: 1.55;
}

.foundation-module-head .foundation-path-position {
  margin-top: 0.55rem;
}

.foundation-v8-purpose {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 0.7rem;
  width: 100%;
  max-width: none;
  box-sizing: border-box;
  margin-top: 0.8rem;
  padding: 0.65rem 0.75rem;
  background: color-mix(in srgb, var(--accent-gold) 7%, var(--panel));
  color: var(--text);
  font-size: 0.86rem;
  line-height: 1.5;
}

.foundation-v8-purpose strong {
  color: var(--accent-gold);
  white-space: nowrap;
}

.foundation-main code {
  padding: 0;
  border: 0;
  background: transparent;
  color: color-mix(in srgb, var(--text) 88%, var(--accent-secondary));
  font-family: var(--font-mono);
  font-size: 0.92em;
}

.foundation-evidence {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.78rem;
}

.foundation-evidence h3 {
  margin: 0;
  color: var(--text);
  font-size: var(--type-small);
}

.foundation-evidence p {
  max-width: 62rem;
  line-height: var(--copy-line-height);
}

.foundation-evidence-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.foundation-session {
  min-width: 0;
}

.foundation-session-map {
  display: grid;
  grid-template-columns: minmax(12.5rem, 14rem) minmax(0, 1fr);
  margin-top: 0.9rem;
  border: 1px solid var(--border-strong);
  border-radius: 0.35rem;
  background: var(--panel-inset);
}

.foundation-session-map-head {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  justify-content: center;
  gap: 0.25rem;
  padding: 0.55rem 0.75rem;
  border-right: 1px solid var(--border);
}

.foundation-session-map-head h3 {
  margin: 0;
  font-size: 0.84rem;
}

.foundation-session-map-head > strong {
  flex: 0 0 auto;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
}

.foundation-session-progress {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.4rem;
  margin: 0;
  padding: 0.45rem;
  list-style: none;
}

.foundation-session-progress li {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 3rem;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 0.3rem;
  background: var(--panel);
  color: var(--text-faint);
  font-size: 0.74rem;
}

.foundation-session-progress li:not(:last-child)::after {
  position: absolute;
  top: 50%;
  left: calc(100% + 1px);
  z-index: -1;
  width: 0.4rem;
  border-top: 1px solid var(--border-strong);
  content: "";
}

.foundation-session-progress li.foundation-progress-static {
  padding: 0.4rem 0.5rem;
}

.foundation-progress-button {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  min-height: 2.9rem;
  padding: 0.4rem 0.5rem;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.foundation-progress-button:hover {
  background: color-mix(in srgb, var(--accent) 7%, var(--panel));
  color: var(--text);
}

.foundation-progress-button:disabled {
  color: var(--text-faint);
  cursor: default;
}

.foundation-progress-button:disabled:hover {
  background: transparent;
}

.foundation-requirement-dots {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.2rem;
  margin-left: auto;
  font-style: normal;
}

.foundation-requirement-dots i {
  width: 0.3rem;
  height: 0.3rem;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  background: transparent;
}

.foundation-requirement-dots i.is-filled {
  border-color: var(--accent);
  background: var(--accent);
}

.foundation-requirement-dots i.is-correct {
  border-color: var(--good);
  background: var(--good);
}

.foundation-requirement-dots i.is-revision {
  border-color: var(--accent-gold);
  background: var(--accent-gold);
}

.foundation-session-progress li.is-complete .foundation-requirement-dots i {
  border-color: var(--good);
  background: var(--good);
}

.foundation-session-progress li span {
  display: grid;
  place-items: center;
  width: 1.45rem;
  height: 1.45rem;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.64rem;
}

@media (max-width: 800px) {
  .foundation-session-map {
    display: block;
  }

  .foundation-session-map-head {
    align-items: center;
    flex-direction: row;
    justify-content: space-between;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
}

.foundation-session-progress li.is-current {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 7%, var(--panel));
  color: var(--text);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 18%, transparent);
}

.foundation-session-progress li.is-current span {
  border-color: var(--accent);
  color: var(--accent);
}

.foundation-session-progress li.is-complete span {
  border-color: var(--good);
  background: color-mix(in srgb, var(--good) 10%, transparent);
  color: var(--good);
}

.foundation-stage {
  padding: 1.25rem 0 0;
  scroll-margin-top: 5.5rem;
}

.foundation-stage-intro {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 1rem;
}

.foundation-stage-intro h3,
.foundation-coach-panel h3 {
  margin: 0.15rem 0 0;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1.15rem;
}

.foundation-stage-intro > p {
  max-width: 34rem;
  margin: 0;
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.55;
}

.foundation-vocabulary {
  margin-bottom: 1rem;
  border-top: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border-strong);
  background: var(--panel-inset);
}

.foundation-vocabulary > header {
  display: grid;
  grid-template-columns: minmax(14rem, 0.7fr) minmax(18rem, 1.3fr);
  align-items: end;
  gap: 1.5rem;
  padding: 0.85rem 1rem;
}

.foundation-vocabulary > header h4,
.foundation-vocabulary > header > p,
.foundation-vocabulary > dl,
.foundation-vocabulary > dl dd {
  margin: 0;
}

.foundation-vocabulary > header h4 {
  color: var(--text);
  font-size: 1rem;
}

.foundation-vocabulary > header > p {
  justify-self: end;
  max-width: 34rem;
  color: var(--text-dim);
  font-size: 0.78rem;
  line-height: 1.4;
  text-align: right;
}

.foundation-vocabulary > dl {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--border);
}

.foundation-vocabulary > dl > div {
  min-width: 0;
  padding: 0.7rem 0.8rem;
  border-right: 1px solid var(--border);
}

.foundation-vocabulary > dl > div:last-child {
  border-right: 0;
}

.foundation-vocabulary dt {
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 700;
}

.foundation-vocabulary dd {
  margin-top: 0.2rem;
  color: var(--text-dim);
  font-size: 0.77rem;
  line-height: 1.5;
}

.foundation-mechanism {
  margin-bottom: 0.9rem;
  border-top: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border-strong);
  background: var(--panel-inset);
}

.foundation-mechanism-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 0.7rem 2rem;
  padding: 1rem;
}

.foundation-mechanism-head h4,
.foundation-mechanism-head p {
  margin: 0;
}

.foundation-mechanism-head h4 {
  margin-top: 0.16rem;
  font-size: 1.15rem;
}

.foundation-mechanism-head > p {
  grid-column: 1 / -1;
  max-width: 58rem;
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.55;
}

/* Orientation diagram: where the heap is, before any field layout. Every
   colour comes from a token so the drawing follows the active theme. */
.foundation-orientation {
  display: grid;
  gap: 0.9rem;
  padding: var(--panel-padding);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel-inset);
}

.foundation-orientation h5 {
  margin: 0.2rem 0 0.4rem;
}

.foundation-orientation > header {
  display: block;
  max-width: 68rem;
}

.foundation-orientation > header > p {
  max-width: 68rem;
  margin: 0.55rem 0 0;
  color: var(--text);
  font-size: 0.94rem;
  line-height: 1.65;
  text-align: left;
}

.foundation-orientation p {
  margin: 0;
  font-size: var(--type-copy);
  line-height: var(--copy-line-height);
}

.foundation-orientation-figure {
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

.foundation-diagram-tools {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.75rem;
}

.foundation-diagram-scroll-hint {
  display: none;
  color: var(--text-dim);
  font-size: 0.8rem;
}

.diagram-dialog {
  width: min(94vw, 90rem);
  max-width: 94vw;
  max-height: 92dvh;
  padding: 1rem;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--panel-inset);
  color: var(--text);
}

.diagram-dialog::backdrop {
  background: rgb(0 0 0 / 70%);
}

.diagram-dialog > header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.diagram-dialog h2 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.5;
}

.diagram-dialog > header button {
  flex-shrink: 0;
}

.diagram-dialog-body {
  max-height: 68dvh;
  overflow: auto;
}

.diagram-dialog .foundation-orientation-svg {
  max-height: none;
}

.diagram-dialog > p {
  font-size: 0.85rem;
  line-height: 1.6;
}

@media (max-width: 800px) {
  .foundation-diagram-tools {
    justify-content: space-between;
    flex-wrap: wrap;
  }

  .foundation-diagram-scroll-hint {
    display: inline;
  }
}

.foundation-orientation-scroll {
  min-width: 0;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-color: var(--border-strong) transparent;
  scrollbar-width: thin;
}

.foundation-orientation-scroll:focus-visible {
  outline: 2px solid var(--accent-secondary);
  outline-offset: 3px;
}

.foundation-orientation-svg {
  display: block;
  width: 100%;
  min-width: 47.5rem;
  height: auto;
  max-height: 32rem;
  font-family: var(--font-mono);
  shape-rendering: geometricPrecision;
}

.foundation-orientation-figure figcaption {
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.94rem;
  font-weight: 400;
  line-height: 1.65;
  text-align: left;
}

.foundation-orientation-svg rect {
  fill: none;
  stroke: var(--border-strong);
  stroke-width: 1;
}

.orient-frame rect {
  stroke-dasharray: 4 3;
}

.orient-heap rect {
  fill: color-mix(in srgb, var(--accent) 10%, transparent);
  stroke: var(--accent);
}

.orient-object rect {
  fill: color-mix(in srgb, var(--accent-secondary) 12%, transparent);
  stroke: var(--accent-secondary);
}

.orient-cell,
.orient-box rect {
  fill: var(--panel);
}

.orient-aside rect {
  fill: color-mix(in srgb, var(--accent-gold) 10%, transparent);
  stroke: var(--accent-gold);
}

:where(.foundation-orientation-svg) text {
  fill: var(--text);
  font-size: 13px;
}

.orient-frame-label,
.orient-region-label,
.orient-heap-label,
.orient-column-label {
  fill: var(--text-dim);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.orient-column-label {
  font-size: 10px;
}

.orient-code {
  font-size: 12px;
}

.orient-heap-label {
  fill: var(--accent);
}

.orient-object-label {
  fill: var(--accent-secondary);
}

.orient-box-note,
.orient-moves,
.orient-edge-label,
.orient-aside-note,
.orient-footer-note {
  fill: var(--text-dim);
  font-size: 11px;
}

.orient-edge-label {
  paint-order: stroke;
  stroke: var(--panel-inset);
  stroke-linejoin: round;
  stroke-width: 5px;
}

.orient-edge-label.is-centered {
  text-anchor: middle;
}

.orient-field-type {
  fill: var(--text);
  font-size: 11px;
}

.orient-footer-note {
  font-size: 10.5px;
}

.orient-aside-label {
  fill: var(--accent-gold);
}

.orient-divider {
  stroke: var(--border);
  stroke-width: 1;
}

.orient-field-divider {
  stroke: color-mix(in srgb, var(--border) 72%, transparent);
  stroke-width: 1;
}

.orient-edge {
  fill: none;
  stroke: var(--accent);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
  vector-effect: non-scaling-stroke;
}

.orient-marker path {
  fill: var(--accent);
}

.orient-addr {
  fill: var(--accent-secondary);
  font-size: 12px;
}

.orient-offset {
  fill: var(--text-dim);
  font-size: 11px;
  text-anchor: end;
}

.orientation-memory-representation .orient-frame-label,
.orientation-memory-representation .orient-region-label,
.orientation-memory-representation .orient-box-note,
.orientation-memory-representation .orient-edge-label,
.orientation-memory-representation .orient-aside-note {
  fill: var(--text);
}

.orientation-memory-representation .orient-heap-label {
  fill: var(--accent);
}

.foundation-orientation-takeaways {
  display: grid;
  gap: 0.4rem;
  margin: 0;
  padding-left: 1.1rem;
  font-size: var(--type-small);
  line-height: var(--copy-line-height);
}

.foundation-memory {
  container-type: inline-size;
  border-top: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--panel) 45%, var(--panel-inset));
}

.foundation-memory > header {
  display: grid;
  grid-template-columns: minmax(15rem, 0.8fr) minmax(20rem, 1.2fr);
  align-items: end;
  gap: 2rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border);
}

.foundation-memory h5,
.foundation-memory > header p {
  margin: 0;
}

.foundation-memory h5 {
  margin-top: 0.16rem;
  color: var(--text);
  font-size: 0.85rem;
}

.foundation-memory > header p {
  color: var(--text-faint);
  font-size: 0.66rem;
  line-height: 1.45;
}

.foundation-memory-offset,
.foundation-memory-width {
  min-width: 0;
  color: var(--text-faint);
  font-size: 0.6rem;
  overflow-wrap: anywhere;
}

.foundation-memory-offset {
  padding: 0.55rem 0.45rem;
}

.foundation-memory-width {
  align-self: start;
  margin: 0.55rem 0.55rem 0 0.35rem;
  padding: 0.12rem 0.28rem;
  border: 1px solid color-mix(in srgb, var(--memory-kind) 60%, var(--border));
  color: color-mix(in srgb, var(--memory-kind) 65%, var(--text-dim));
  white-space: nowrap;
}

.foundation-memory-payload {
  min-width: 0;
  padding: 0.6rem 0.45rem 0.6rem 0.75rem;
}

.foundation-memory-payload strong,
.foundation-memory-payload small {
  display: block;
  min-width: 0;
  overflow-wrap: anywhere;
}

.foundation-memory-payload strong {
  color: var(--text);
  font-size: 0.72rem;
}

.foundation-memory-payload small {
  margin-top: 0.13rem;
  color: var(--text-dim);
  font-size: 0.64rem;
}

.foundation-memory code {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
}

/* Foundation diagrams use positioned nodes and routed SVG connectors. */
.foundation-memory-diagram {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  background-color: color-mix(in srgb, var(--panel) 74%, var(--panel-inset));
  background-image:
    linear-gradient(color-mix(in srgb, var(--border) 18%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--border) 18%, transparent) 1px, transparent 1px);
  background-size: 1.25rem 1.25rem;
}

.foundation-diagram-connectors {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}

.foundation-diagram-edge {
  fill: none;
  stroke: var(--accent-secondary);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.foundation-diagram-connectors marker path {
  fill: var(--accent-secondary);
}

.foundation-memory-nodes {
  position: relative;
  z-index: 2;
  margin: 0;
  padding: 0;
  list-style: none;
}

.foundation-memory-node::before,
.foundation-memory-node::after {
  position: absolute;
  z-index: 3;
  width: 0.44rem;
  height: 0.44rem;
  border: 1px solid var(--accent-secondary);
  background: var(--panel);
  content: "";
  transform: rotate(45deg);
}

.foundation-memory-node:first-child::before,
.foundation-memory-node:last-child::after {
  display: none;
}

.foundation-memory-diagram {
  container-type: inline-size;
  --memory-route-space: calc(1.25rem + var(--memory-link-count) * 0.375rem);
  padding: 1.2rem;
}

.foundation-memory-diagram.has-cross-link {
  padding-bottom: 1.2rem;
}

.foundation-memory-diagram .foundation-diagram-connectors {
  z-index: 3;
}

.foundation-memory-diagram [data-memory-link="0"] {
  --memory-link-color: var(--accent-secondary);
}

.foundation-memory-diagram [data-memory-link="1"] {
  --memory-link-color: var(--accent);
}

.foundation-memory-diagram [data-memory-link="2"] {
  --memory-link-color: var(--accent-gold);
}

.foundation-memory-diagram [data-memory-link="3"] {
  --memory-link-color: var(--diagram-neutral);
}

.foundation-memory-diagram [data-memory-link="4"] {
  --memory-link-color: var(--accent-secondary);
}

.foundation-memory-diagram [data-memory-link="5"] {
  --memory-link-color: var(--accent);
}

.foundation-memory-diagram .foundation-diagram-edge[data-memory-link] {
  stroke: var(--memory-link-color);
}

.foundation-memory-marker[data-memory-link] path {
  fill: var(--memory-link-color);
}

.foundation-diagram-legend {
  position: relative;
  z-index: 4;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1rem;
  margin: 1rem 0 0;
  padding: 0.7rem 0 0;
  border-top: 1px solid var(--border);
  list-style: none;
}

.foundation-memory-diagram.has-cross-link .foundation-diagram-legend {
  margin-top: calc(2.4rem + var(--memory-link-count) * 1.7rem);
}

.foundation-diagram-legend li {
  --memory-link-color: var(--accent-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-width: 0;
  color: var(--text-dim);
  font-size: 0.85rem;
  line-height: 1.35;
}

.foundation-diagram-legend button {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.6rem 0.7rem;
  border: 1px solid transparent;
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.foundation-diagram-legend button:hover,
.foundation-diagram-legend button[aria-pressed="true"] {
  border-color: var(--memory-link-color);
  background: color-mix(in srgb, var(--memory-link-color) 8%, var(--panel));
}

.foundation-diagram-legend button > span {
  min-width: 0;
}

.foundation-diagram-legend strong,
.foundation-diagram-legend small {
  display: block;
  overflow-wrap: anywhere;
}

.foundation-diagram-legend small {
  margin-top: 0.3rem;
  color: var(--text-dim);
  font-size: 0.78rem;
  line-height: 1.5;
}

.foundation-memory-diagram[data-active-memory-link="0"],
.foundation-memory-diagram[data-active-memory-link="4"] {
  --active-memory-link: var(--accent-secondary);
}

.foundation-memory-diagram[data-active-memory-link="1"],
.foundation-memory-diagram[data-active-memory-link="5"] {
  --active-memory-link: var(--accent);
}

.foundation-memory-diagram[data-active-memory-link="2"] {
  --active-memory-link: var(--accent-gold);
}

.foundation-memory-diagram[data-active-memory-link="3"] {
  --active-memory-link: var(--diagram-neutral);
}

.foundation-memory-diagram[data-active-memory-link]:not([data-active-memory-link=""]) .foundation-diagram-edge {
  opacity: 0.2;
}

.foundation-memory-diagram[data-active-memory-link] .foundation-diagram-edge.is-selected {
  opacity: 1;
  stroke-width: 3;
}

.foundation-memory-diagram .is-link-endpoint {
  outline: 2px solid var(--active-memory-link);
  outline-offset: -2px;
  background: color-mix(in srgb, var(--active-memory-link) 12%, var(--panel));
}

.foundation-diagram-legend i {
  position: relative;
  flex: 0 0 1.5rem;
  height: 2px;
  background: var(--memory-link-color);
}

.foundation-diagram-legend i::after {
  position: absolute;
  top: 50%;
  right: -1px;
  width: 0.34rem;
  height: 0.34rem;
  border-top: 2px solid var(--memory-link-color);
  border-right: 2px solid var(--memory-link-color);
  content: "";
  transform: translateY(-50%) rotate(45deg);
}

.foundation-memory-nodes {
  display: grid;
  grid-template-columns: repeat(var(--memory-region-count), minmax(0, 1fr));
  align-items: stretch;
  gap: clamp(2.2rem, 4vw, 4.5rem);
  width: 100%;
  margin: 0;
}

.foundation-memory-node {
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr;
  min-width: 0;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  background: var(--panel);
  box-shadow: 0 0.3rem 0.9rem rgb(0 0 0 / 12%);
}

.foundation-memory-node::before {
  display: none;
}

.foundation-memory-node::after {
  display: none;
}

.foundation-memory-node > header {
  position: relative;
  z-index: 4;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  min-height: 3.2rem;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--panel-inset) 62%, var(--panel));
}

.foundation-memory-node > header div,
.foundation-memory-node > header span,
.foundation-memory-node > header strong,
.foundation-memory-node > header small {
  display: block;
  min-width: 0;
}

.foundation-memory-node > header span {
  color: var(--text-faint);
  font-size: 0.68rem;
  text-transform: uppercase;
}

.foundation-memory-node > header strong {
  margin-top: 0.08rem;
  color: var(--text);
  font-size: 0.95rem;
  overflow-wrap: anywhere;
}

.foundation-memory-node > header small {
  color: var(--text-faint);
  font-size: 0.68rem;
  overflow-wrap: anywhere;
  text-align: right;
}

.foundation-memory-strip {
  position: relative;
  z-index: 2;
  display: grid;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  grid-template-columns: minmax(0, 1fr);
  grid-auto-rows: minmax(3.8rem, 1fr);
  gap: 1px;
  padding: 1px;
  background: var(--border-strong);
}

.foundation-memory-block {
  --memory-kind: var(--border-strong);
  position: relative;
  display: grid;
  grid-template-columns: 3.4rem minmax(0, 1fr) auto;
  align-items: center;
  min-width: 0;
  min-height: 3.8rem;
  padding: 0.42rem 0.5rem;
  border-left: 3px solid var(--memory-kind);
  background: color-mix(in srgb, var(--memory-kind) 4%, var(--panel));
}

.foundation-memory-offset,
.foundation-memory-width {
  min-width: 0;
  color: var(--text-faint);
  font-size: 0.68rem;
  overflow-wrap: anywhere;
}

.foundation-memory-width {
  justify-self: start;
  margin-left: 0.35rem;
  padding: 0.08rem 0.24rem;
  border: 1px solid color-mix(in srgb, var(--memory-kind) 52%, var(--border));
  border-radius: 2px;
  color: color-mix(in srgb, var(--memory-kind) 62%, var(--text-dim));
}

.foundation-memory-payload {
  align-self: center;
  min-width: 0;
  padding: 0.2rem 0.45rem;
}

.foundation-memory-payload strong,
.foundation-memory-payload small {
  display: block;
  min-width: 0;
  overflow-wrap: anywhere;
}

.foundation-memory-payload strong {
  color: var(--text);
  font-size: 0.9rem;
}

.foundation-memory-payload small {
  margin-top: 0.12rem;
  color: var(--text-dim);
  font-size: 0.82rem;
  line-height: 1.5;
}

.foundation-memory-block.is-reference,
.foundation-memory-block.is-index {
  --memory-kind: var(--accent-secondary);
}

.foundation-memory-block.is-header,
.foundation-memory-block.is-metadata {
  --memory-kind: var(--accent-gold);
}

.foundation-memory-block.is-current {
  --memory-kind: var(--accent);
}

.foundation-memory-block.is-danger {
  --memory-kind: var(--bad);
}

.foundation-memory-diagram code {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
}

.foundation-memory-node {
  animation: foundation-mechanism-node-in 260ms ease-out both;
}

.foundation-memory-diagram:is(
  [data-region-count="3"],
  [data-region-count="4"],
  [data-region-count="5"]
) {
  padding-right: var(--memory-route-space);
}

.foundation-memory-diagram:is(
  [data-region-count="3"],
  [data-region-count="4"],
  [data-region-count="5"]
)
  .foundation-memory-nodes {
  grid-template-columns: minmax(0, 1fr);
  gap: 2.8rem;
}

.foundation-memory-diagram:is(
  [data-region-count="3"],
  [data-region-count="4"],
  [data-region-count="5"]
)
  .foundation-diagram-legend,
.foundation-memory-diagram:is(
    [data-region-count="3"],
    [data-region-count="4"],
    [data-region-count="5"]
  ).has-cross-link
  .foundation-diagram-legend {
  margin-top: 1rem;
  margin-right: calc(1.2rem - var(--memory-route-space));
}

.foundation-memory-diagram .foundation-diagram-edge {
  animation: foundation-diagram-edge-in 300ms ease-out both;
}

@container (max-width: 42rem) {
  .foundation-memory-diagram {
    padding-right: var(--memory-route-space);
    padding-bottom: 1.2rem;
  }

  .foundation-memory-diagram.has-cross-link .foundation-diagram-legend {
    margin-top: 1rem;
  }

  .foundation-diagram-legend {
    margin-right: calc(1.2rem - var(--memory-route-space));
  }

  .foundation-memory-nodes {
    grid-template-columns: minmax(0, 1fr);
    gap: 2.8rem;
  }

  .foundation-memory-node > header {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.3rem;
    padding: 0.45rem;
  }

  .foundation-memory-node > header small {
    text-align: left;
  }

  .foundation-memory-block {
    grid-template-columns: 2.6rem minmax(0, 1fr) auto;
    min-height: 3.65rem;
    padding: 0.32rem;
  }

  .foundation-memory-payload strong {
    font-size: 0.9rem;
  }

  .foundation-memory-payload small,
  .foundation-memory-offset,
  .foundation-memory-width {
    font-size: 0.8rem;
  }

  .foundation-memory-block {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.15rem 0.35rem;
    padding: 0.6rem;
  }

  .foundation-memory-payload {
    grid-column: 1 / -1;
    grid-row: 2;
    padding: 0.2rem 0;
  }

  .foundation-memory-width {
    grid-column: 2;
    grid-row: 1;
  }

}

@keyframes foundation-mechanism-node-in {
  from {
    opacity: 0.35;
    transform: translateY(0.28rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes foundation-diagram-edge-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.foundation-primer {
  display: grid;
  grid-template-columns: minmax(12rem, 0.45fr) minmax(0, 1.55fr);
  margin-bottom: 1rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.foundation-primer > header {
  padding: 0.8rem 1rem 0.8rem 0;
}

.foundation-primer h4,
.foundation-primer dl,
.foundation-primer dd {
  margin: 0;
}

.foundation-primer h4 {
  margin-top: 0.18rem;
  font-size: 0.86rem;
}

.foundation-primer dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-left: 1px solid var(--border);
}

.foundation-primer dl > div {
  min-width: 0;
  padding: 0.65rem 0.75rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.foundation-primer dl > div:nth-child(2n) {
  border-right: 0;
}

.foundation-primer dl > div:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.foundation-primer dt {
  color: var(--text);
  font-size: 0.73rem;
  font-weight: 700;
}

.foundation-primer dd {
  margin-top: 0.18rem;
  color: var(--text-dim);
  font-size: 0.7rem;
  line-height: 1.4;
}

.foundation-reference-model {
  border-top: 1px solid var(--border);
}

.foundation-repair {
  margin-bottom: 1rem;
  border-top: 1px solid var(--accent-gold);
  border-bottom: 1px solid var(--border);
}

.foundation-repair header {
  padding: 0.75rem 0;
}

.foundation-repair h4 {
  margin: 0.15rem 0 0;
  font-size: 0.92rem;
}

.foundation-repair > div {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  border-top: 1px solid var(--border);
}

.foundation-repair article {
  padding: 0.75rem;
  border-right: 1px solid var(--border);
}

.foundation-repair article:last-child {
  border-right: 0;
}

.foundation-repair article p {
  margin: 0.25rem 0 0;
  color: var(--text-dim);
  font-size: 0.74rem;
  line-height: 1.45;
}

details.foundation-reference-model > summary {
  padding: 0.75rem 0;
  color: var(--text);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 600;
}

/* Foundation lessons read as a guided article; diagrams support the prose. */
.foundation-vocabulary {
  margin: 0 0 1.75rem;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--border-strong);
  border-bottom: 0;
  background: transparent;
}

.foundation-vocabulary > header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0;
}

.foundation-vocabulary > header h4 {
  margin-top: 0.18rem;
  font-size: 1.12rem;
}

.foundation-vocabulary > header > p {
  font-size: 0.76rem;
}

.foundation-vocabulary-copy,
.foundation-primer-copy {
  max-width: 68rem;
  margin-top: 1rem;
}

.foundation-vocabulary-copy p,
.foundation-primer-copy p {
  margin: 0 0 0.85rem;
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.62;
}

.foundation-vocabulary-copy p:last-child,
.foundation-primer-copy p:last-child {
  margin-bottom: 0;
}

.foundation-vocabulary-copy span,
.foundation-primer-copy span {
  display: inline;
}

.foundation-primer-term {
  color: var(--text);
}

.foundation-vocabulary-visual {
  width: 100%;
  max-width: 72rem;
  margin-top: 1.35rem;
}

.foundation-vocabulary-visual > .foundation-orientation {
  padding: 1.25rem 0 0;
  border: 0;
  border-top: 1px solid var(--border);
  border-radius: 0;
  background: transparent;
}

.foundation-vocabulary-visual > .foundation-memory {
  margin: 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.foundation-memory.is-runtime-only {
  margin-top: 0;
  padding-top: 0;
}

.foundation-mechanism {
  margin-bottom: 1.8rem;
  border-top: 1px solid var(--border-strong);
  border-bottom: 0;
  background: transparent;
}

.foundation-mechanism-head {
  display: block;
  padding: 1.25rem 0 1rem;
}

.foundation-mechanism-head > p {
  margin-top: 0.65rem;
}

.foundation-mechanism-narrative {
  max-width: 72rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.foundation-mechanism-narrative > li {
  margin: 0 0 1.65rem;
}

.foundation-mechanism-narrative > li > header {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.8rem;
}

.foundation-mechanism-narrative > li > header > .mono {
  color: var(--accent-secondary);
  font-size: 0.7rem;
  text-transform: uppercase;
}

.foundation-mechanism-narrative h5,
.foundation-mechanism-narrative p {
  margin: 0;
}

.foundation-mechanism-narrative h5 {
  font-size: 1rem;
}

.foundation-mechanism-narrative em {
  color: var(--text-faint);
  font-size: 0.78rem;
  font-style: normal;
}

.foundation-mechanism-narrative > li > p {
  max-width: 66rem;
  margin: 0.55rem 0 0 5.8rem;
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.7;
}

@media (max-width: 680px) {
  .foundation-mechanism-narrative > li > header {
    grid-template-columns: 4.5rem minmax(0, 1fr);
    gap: 0.4rem 0.7rem;
  }

  .foundation-mechanism-narrative em {
    grid-column: 2;
  }

  .foundation-mechanism-narrative > li > p {
    margin-left: 0;
  }
}

.foundation-memory {
  width: 100%;
  margin: 0.5rem 0 1.25rem;
  padding: 1.35rem 0 0;
  border: 0;
  background: transparent;
  text-align: left;
}

.foundation-memory > header {
  display: block;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
  border: 0;
  text-align: left;
}

.foundation-memory h5 {
  margin: 0.2rem 0 0.6rem;
  font-size: 1.08rem;
}

.foundation-memory > header p,
.foundation-memory-explanation p {
  margin: 0;
  color: var(--text);
  font-size: 0.94rem;
  line-height: 1.65;
}

.foundation-memory-diagram {
  width: 100%;
  margin: 1.25rem 0 0;
}

.foundation-memory-explanation {
  display: grid;
  max-width: 70rem;
  margin-top: 1.2rem;
  gap: 0.5rem;
}

.foundation-memory-explanation strong {
  color: var(--text);
}

.foundation-d8-observation {
  margin-top: 1.5rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border-strong);
}

.foundation-d8-observation > header {
  max-width: 70rem;
}

.foundation-d8-observation h5,
.foundation-d8-observation p,
.foundation-d8-observation fieldset {
  margin: 0;
}

.foundation-d8-observation h5 {
  margin-top: 0.18rem;
}

.foundation-d8-observation > header p,
.foundation-d8-review > p {
  max-width: 68rem;
  margin-top: 0.55rem;
  color: var(--text);
  font-size: 0.94rem;
  line-height: 1.65;
}

.foundation-d8-workbench {
  max-width: 72rem;
  margin-top: 1.25rem;
}

.foundation-d8-prediction {
  min-width: 0;
  padding: 0;
  border: 0;
}

.foundation-d8-prediction > legend {
  color: var(--text);
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.5;
}

.foundation-d8-prediction-instruction {
  margin: 0.3rem 0 0.75rem;
  color: var(--warning);
  font-size: 0.82rem;
  line-height: 1.45;
}

.foundation-d8-prediction .foundation-observation-choices {
  display: grid;
  gap: 0.45rem;
}

.foundation-d8-terminal {
  margin-top: 1rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-small);
  background: var(--code-bg);
  overflow: hidden;
  box-shadow: 0 0.8rem 2rem rgb(0 0 0 / 18%);
}

.foundation-d8-terminal > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 2.8rem;
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel-inset);
  color: var(--text);
  font-size: 0.82rem;
}

.foundation-d8-terminal-name,
.foundation-d8-terminal-meta {
  display: flex;
  align-items: center;
}

.foundation-d8-terminal-name {
  gap: 0.55rem;
}

.foundation-d8-terminal-name i {
  width: 0.48rem;
  height: 0.48rem;
  border-radius: 50%;
  background: var(--warning);
}

.foundation-d8-terminal.is-ready .foundation-d8-terminal-name i {
  background: var(--good);
}

.foundation-d8-terminal.is-failed .foundation-d8-terminal-name i {
  background: var(--bad);
}

.foundation-d8-terminal-meta {
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.4rem 0.7rem;
}

.foundation-d8-terminal > header span,
.foundation-d8-terminal > header button {
  color: var(--text);
  font-size: 0.75rem;
}

.foundation-d8-reset {
  display: grid;
  width: 1.8rem;
  height: 1.8rem;
  padding: 0.28rem;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.foundation-d8-reset svg {
  width: 100%;
  height: 100%;
}

.foundation-d8-reset:hover:not(:disabled),
.foundation-d8-reset:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.foundation-d8-reset:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.foundation-d8-reset:disabled {
  opacity: 0.38;
  cursor: default;
}

.foundation-d8-terminal-body {
  --d8-terminal-inset: 1rem;
  --d8-prompt-width: 3.25rem;
  --d8-column-gap: 0.7rem;
  --d8-text-column: calc(
    var(--d8-terminal-inset) + var(--d8-prompt-width) + var(--d8-column-gap)
  );
  padding: 0.45rem 0 0.65rem;
}

.foundation-d8-entry {
  display: grid;
  grid-template-columns: var(--d8-prompt-width) minmax(0, 1fr);
  align-items: baseline;
  gap: var(--d8-column-gap);
  padding: 0.22rem var(--d8-terminal-inset);
}

.foundation-d8-prompt {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--control-font-size);
  line-height: 1.6;
  text-align: right;
  user-select: none;
}

.foundation-d8-entry.is-launch {
  padding-top: 0.35rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  color: var(--text);
}

.foundation-d8-entry.is-setup {
  padding-top: 0.8rem;
  padding-bottom: 0.65rem;
}

.foundation-d8-entry pre,
.foundation-d8-output {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.foundation-d8-entry code,
.foundation-d8-output code {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--control-font-size);
  line-height: 1.6;
}

.foundation-d8-input input {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--control-font-size);
  line-height: 1.6;
}

.foundation-d8-entry .static-code-line {
  display: block;
  min-height: 1.6em;
}

.foundation-d8-result {
  display: block;
}

.foundation-d8-review[hidden],
.foundation-d8-review fieldset[hidden] {
  display: none;
}

.foundation-d8-result.is-failed {
  background: color-mix(in srgb, var(--danger) 7%, transparent);
}

.foundation-d8-output {
  padding: 0 var(--d8-terminal-inset) 0.3rem var(--d8-text-column);
}

.foundation-d8-output code {
  display: block;
  line-height: 1.5;
}

.foundation-d8-output-line {
  display: block;
  min-height: 1.5em;
  line-height: inherit;
}

.foundation-d8-progress {
  margin: 0.15rem var(--d8-terminal-inset) 0.4rem var(--d8-text-column);
  color: var(--warning);
  font-family: var(--font-mono);
  font-size: var(--control-font-size);
  line-height: 1.5;
}

.foundation-d8-progress.is-good {
  color: var(--good);
}

.foundation-d8-result.is-running .foundation-d8-entry {
  opacity: 0.72;
}

.foundation-d8-result code .is-evidence {
  display: block;
  width: 100%;
  box-sizing: border-box;
  margin: 0;
  padding: 0 0.5rem;
  background: color-mix(in srgb, var(--good) 26%, transparent);
  box-shadow: inset 0.2rem 0 var(--good);
  color: var(--good);
  font-weight: 650;
}

.foundation-d8-review fieldset {
  min-width: 0;
  padding: 0;
  border: 0;
}

.foundation-d8-review legend {
  margin-bottom: 0.65rem;
  color: var(--text);
  font-size: 0.94rem;
  font-weight: 650;
  line-height: 1.5;
}

.foundation-observation-choices {
  display: grid;
  gap: 0.45rem;
}

.foundation-observation-choices button {
  width: 100%;
  padding: 0.72rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--panel-inset);
  color: var(--text);
  font: inherit;
  font-size: 0.86rem;
  line-height: 1.45;
  text-align: left;
  cursor: pointer;
}

.foundation-observation-choices button:hover:not(:disabled),
.foundation-observation-choices button:focus-visible,
.foundation-observation-choices button.is-selected {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--panel-inset));
}

.foundation-observation-choices button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.foundation-observation-choices button.is-correct {
  border-color: var(--good);
  background: color-mix(in srgb, var(--good) 10%, var(--panel-inset));
}

.foundation-observation-choices button.is-revision {
  border-color: var(--warning);
}

.foundation-observation-choices button:disabled {
  cursor: default;
  opacity: 0.84;
}

.foundation-d8-task,
.foundation-d8-input {
  display: grid;
  grid-template-columns: var(--d8-prompt-width) minmax(0, 1fr);
  align-items: baseline;
  gap: var(--d8-column-gap);
  padding: 0.25rem var(--d8-terminal-inset);
}

.foundation-d8-task {
  padding-top: 0.6rem;
  padding-bottom: 0.7rem;
  border-top: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  color: var(--chrome-subtle);
  font-family: var(--font-mono);
  font-size: var(--control-font-size);
  font-style: italic;
  line-height: 1.6;
}

.foundation-d8-task p {
  margin: 0;
  font: inherit;
}

.foundation-d8-comment {
  grid-column: 2;
  color: inherit;
  text-align: left;
}

.foundation-d8-comment code {
  color: inherit;
  font-size: inherit;
  font-style: inherit;
}

.foundation-d8-transcript:empty {
  display: none;
}

.foundation-d8-input {
  grid-template-columns: var(--d8-prompt-width) minmax(0, 1fr);
  align-items: baseline;
  padding-top: 0.2rem;
  padding-bottom: 0.55rem;
  background: var(--code-bg);
  cursor: text;
}

.foundation-d8-input input {
  width: 100%;
  min-width: 0;
  height: 1.6em;
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  outline: 0;
  background: transparent;
  box-shadow: none;
  caret-color: var(--accent);
}

.foundation-d8-input input:focus,
.foundation-d8-input input:focus-visible {
  border: 0;
  outline: 0;
  box-shadow: none;
}

.foundation-d8-input input:disabled {
  cursor: not-allowed;
}

.foundation-d8-input input::placeholder {
  color: var(--chrome-subtle);
  opacity: 1;
}

.foundation-d8-terminal.is-locked .foundation-d8-input {
  background: var(--code-bg);
  opacity: 0.58;
}

.foundation-d8-review {
  display: grid;
  gap: 0.9rem;
  margin-top: 1.35rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
}

.foundation-d8-outcome {
  display: grid;
  gap: 0.45rem;
}

.foundation-d8-outcome p {
  margin: 0;
  padding-left: 0.75rem;
  border-left: 2px solid var(--warning);
  color: var(--text);
  font-size: 0.88rem;
  line-height: 1.55;
}

.foundation-d8-outcome p.is-correct {
  border-left-color: var(--good);
}

.foundation-d8-review > .foundation-d8-explanation {
  max-width: 68rem;
  margin-top: 0;
}

@media (max-width: 780px) {
  .foundation-d8-terminal-body {
    --d8-terminal-inset: 0.75rem;
    --d8-column-gap: 0.5rem;
  }

  .foundation-d8-terminal > header {
    align-items: flex-start;
  }

  .foundation-d8-terminal-meta {
    align-items: flex-end;
    flex-direction: column;
    gap: 0.15rem;
  }

  .foundation-d8-entry,
  .foundation-d8-task {
    grid-template-columns: var(--d8-prompt-width) minmax(0, 1fr);
    gap: var(--d8-column-gap);
    padding-right: var(--d8-terminal-inset);
    padding-left: var(--d8-terminal-inset);
  }

  .foundation-d8-input {
    grid-template-columns: var(--d8-prompt-width) minmax(0, 1fr);
    gap: var(--d8-column-gap);
    padding-right: var(--d8-terminal-inset);
    padding-left: var(--d8-terminal-inset);
  }
}

.foundation-model-takeaways {
  max-width: 72rem;
  padding: 0.4rem 0 0.2rem;
}

.foundation-model-takeaways p {
  max-width: 68rem;
  margin: 0 0 1.25rem;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.65;
}

.foundation-source-lens {
  max-width: 72rem;
  margin-top: 2rem;
  padding: 1.6rem 0 0;
  border-top: 1px solid var(--border-strong);
}

.foundation-learning-ladder {
  max-width: 72rem;
  margin: 0 0 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-strong);
}

.foundation-learning-ladder > header {
  max-width: 68rem;
}

.foundation-learning-ladder > header h4,
.foundation-learning-ladder > header p {
  margin: 0;
  color: var(--text);
}

.foundation-learning-ladder > header h4 {
  margin-top: 0.22rem;
  font-size: 1.22rem;
  line-height: 1.3;
}

.foundation-learning-ladder > header p {
  margin-top: 0.65rem;
  font-size: 0.94rem;
  line-height: 1.65;
}

.foundation-worked-lesson,
.foundation-lesson-check {
  max-width: 68rem;
  margin-top: 1.6rem;
  padding-top: 1.3rem;
  border-top: 1px solid var(--border);
}

.foundation-readthrough-title {
  max-width: 62rem;
  margin: 0;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.45;
}

.foundation-ladder-step {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.foundation-ladder-step > span {
  display: grid;
  width: 1.65rem;
  height: 1.65rem;
  place-items: center;
  border: 1px solid var(--accent-secondary);
  border-radius: 50%;
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.foundation-ladder-step > strong {
  color: var(--text);
  font-size: 1rem;
}

.foundation-ladder-code {
  max-width: 62rem;
  margin: 1rem 0;
}

.foundation-worked-trace {
  max-width: 62rem;
  margin: 1.1rem 0 0;
  padding: 0;
  list-style: none;
}

.foundation-worked-trace li {
  display: grid;
  grid-template-columns: 1.6rem minmax(0, 1fr);
  gap: 0.75rem;
  margin-top: 0.7rem;
}

.foundation-worked-trace li > span {
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.65;
}

.foundation-worked-trace p,
.foundation-worked-rule,
.foundation-ladder-bridge {
  margin: 0;
  color: var(--text);
  font-size: 0.94rem;
  line-height: 1.65;
}

.foundation-worked-rule {
  max-width: 62rem;
  margin-top: 1rem;
  padding: 0.8rem 0 0.8rem 2.35rem;
  border-top: 1px solid var(--border);
}

.foundation-lesson-check fieldset {
  max-width: 62rem;
  margin: 1rem 0 0;
  padding: 0;
  border: 0;
}

.foundation-lesson-check legend {
  margin-bottom: 0.75rem;
  color: var(--text);
  font-size: 0.94rem;
  font-weight: 700;
  line-height: 1.5;
}

.foundation-lesson-choices {
  display: grid;
  gap: 0.5rem;
}

.foundation-lesson-choices button {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 0.88rem;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
}

.foundation-lesson-choices button:hover:not(:disabled),
.foundation-lesson-choices button:focus-visible {
  border-color: var(--accent-secondary);
  background: color-mix(in srgb, var(--accent-secondary) 7%, transparent);
}

.foundation-lesson-choices button.is-correct {
  border-color: var(--good);
  background: color-mix(in srgb, var(--good) 8%, transparent);
}

.foundation-lesson-choices button.is-revision {
  border-color: var(--bad);
  background: color-mix(in srgb, var(--bad) 7%, transparent);
}

.foundation-lesson-feedback {
  max-width: 62rem;
  margin: 0.75rem 0 0;
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.6;
}

.foundation-lesson-feedback::before {
  color: var(--bad);
  content: "Reconsider: ";
  font-weight: 700;
}

.foundation-lesson-feedback.is-correct::before {
  color: var(--good);
  content: "Confirmed: ";
}

.foundation-ladder-bridge {
  max-width: 62rem;
  margin-top: 1.6rem;
  padding-top: 1rem;
  border-top: 1px solid var(--accent-secondary);
}

.foundation-ladder-reveal,
.foundation-ownership-story {
  max-width: 68rem;
}

.foundation-ownership-story {
  margin-top: 1.35rem;
  padding-top: 0.35rem;
}

.foundation-ownership-story > .foundation-connected-copy {
  margin-top: 0.8rem;
}

.foundation-memory-concept-progress {
  max-width: 62rem;
  margin: 0.9rem 0 1.1rem;
  overflow-x: auto;
}

.foundation-memory-concept-progress svg {
  display: block;
  width: 100%;
  min-width: 42rem;
  height: auto;
  font-family: var(--font-mono);
  shape-rendering: geometricPrecision;
}

.foundation-memory-concept-progress text {
  fill: var(--text);
  font-size: 11px;
}

.memory-progress-region > rect {
  fill: color-mix(in srgb, var(--diagram-neutral) 5%, transparent);
  stroke: var(--diagram-neutral);
  stroke-dasharray: 4 3;
}

.memory-progress-region > text {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.memory-progress-region.is-v8-heap > rect {
  fill: color-mix(in srgb, var(--accent) 8%, transparent);
  stroke: var(--accent);
}

.memory-progress-allocation > rect,
.memory-progress-pointer rect,
.memory-progress-v8-object rect,
.memory-progress-layout rect {
  fill: var(--panel);
  stroke: var(--border-strong);
}

.memory-progress-byte rect {
  fill: var(--panel-inset);
  stroke: var(--border);
}

.memory-progress-byte text {
  font-size: 9px;
  text-anchor: middle;
}

.memory-progress-byte.is-access rect {
  fill: color-mix(in srgb, var(--good) 16%, var(--panel));
  stroke: var(--good);
}

.memory-progress-label,
.memory-progress-callout,
.memory-progress-access-label {
  font-size: 10px;
}

.foundation-memory-concept-progress .memory-progress-callout {
  fill: var(--good);
}

.foundation-memory-concept-progress .memory-progress-callout.is-outside {
  fill: var(--bad);
}

.memory-progress-bracket,
.memory-progress-edge,
.memory-progress-layout path {
  fill: none;
  stroke: var(--good);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}

.foundation-memory-concept-progress .memory-progress-access-label {
  fill: var(--good);
  text-anchor: middle;
}

.memory-progress-pointer rect {
  fill: color-mix(in srgb, var(--accent-secondary) 10%, var(--panel));
  stroke: var(--accent-secondary);
}

.memory-progress-edge,
.memory-progress-layout path {
  stroke: var(--accent-secondary);
}

.foundation-memory-concept-progress marker path {
  fill: var(--accent-secondary);
}

.memory-progress-v8-object rect {
  fill: color-mix(in srgb, var(--accent) 10%, var(--panel));
  stroke: var(--accent);
}

.foundation-memory-concept-progress .memory-progress-note {
  font-size: 10px;
}

.memory-progress-layout rect {
  fill: color-mix(in srgb, var(--accent-secondary) 8%, var(--panel));
  stroke: var(--accent-secondary);
}

.foundation-ownership-story > .foundation-concept-question {
  max-width: 58rem;
  margin: 0.8rem 0 0;
  color: var(--text);
  font-size: 0.94rem;
  font-weight: 700;
  line-height: 1.65;
}

.foundation-source-lens > header {
  max-width: 68rem;
}

.foundation-source-lens h4,
.foundation-source-lens > header p,
.foundation-concept-prose h5,
.foundation-concept-prose p {
  margin: 0;
}

.foundation-source-lens h4 {
  margin-top: 0.22rem;
  color: var(--text);
  font-size: 1.22rem;
  line-height: 1.3;
}

.foundation-source-lens > header p {
  margin-top: 0.65rem;
  color: var(--text);
  font-size: 0.94rem;
  line-height: 1.65;
}

.foundation-connected-copy,
.foundation-connected-example,
.foundation-connected-lesson > .foundation-worked-trace,
.foundation-connected-lesson > .foundation-concept-question {
  max-width: 62rem;
}

.foundation-connected-copy {
  margin-top: 1.2rem;
}

.foundation-connected-copy p {
  margin: 0.75rem 0 0;
  color: var(--text);
  font-size: 0.94rem;
  line-height: 1.67;
}

.foundation-connected-example figcaption {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-bottom: 0.55rem;
  color: var(--text);
  font-size: 0.88rem;
}

.foundation-connected-example figcaption span {
  font-family: var(--font-mono);
  font-size: 0.76rem;
}

.foundation-connected-lesson > .foundation-concept-question {
  margin-top: 1.2rem;
  color: var(--text);
  font-weight: 700;
  line-height: 1.65;
}

.foundation-concept-prose {
  max-width: 62rem;
  margin-top: 1.35rem;
}

.foundation-concept-prose article {
  margin: 0;
  padding: 1.25rem 0;
  border-top: 1px solid var(--border);
}

.foundation-concept-prose article h5 {
  margin-bottom: 0.38rem;
  color: var(--text);
  font-size: 1rem;
}

.foundation-concept-prose article p {
  max-width: 62rem;
  color: var(--text);
  font-size: 0.94rem;
  line-height: 1.67;
}

.foundation-example-code {
  max-width: 54rem;
  margin: 1rem 0 1.1rem;
}

.foundation-example-code pre {
  margin: 0;
  padding: 0.8rem 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  background: var(--code-bg);
}

.foundation-example-code pre > code {
  display: block;
  min-width: max-content;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
  tab-size: 2;
}

.foundation-example-code .static-code-line {
  display: block;
  min-height: 1.6em;
  padding: 0 1rem;
}

.foundation-example-code code[data-line-numbers="true"] .static-code-line {
  display: grid;
  grid-template-columns: 2.75rem minmax(0, 1fr);
  padding: 0;
}

.foundation-example-code .static-code-line-no {
  padding-right: 0.75rem;
  border-right: 1px solid var(--border);
  color: var(--text-faint);
  text-align: right;
  user-select: none;
}

.foundation-example-code .static-code-line-text {
  display: block;
  padding: 0 1rem;
  white-space: pre;
}

.foundation-example-code .static-code-line.is-focus {
  background: color-mix(in srgb, var(--accent) 13%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 24%, transparent);
}

.foundation-concept-prose article .foundation-example-code > p {
  display: block;
  margin-top: 0.55rem;
  font-size: 0.88rem;
  line-height: 1.58;
  white-space: normal;
}

.foundation-concept-prose article .foundation-concept-question {
  margin-top: 0.65rem;
  color: var(--text);
}

.foundation-primer {
  display: block;
  max-width: 70rem;
  margin-bottom: 1.4rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border);
}

.foundation-primer > header {
  max-width: 58rem;
  padding: 0;
}

.foundation-primer h4 {
  margin-top: 0.18rem;
  font-size: 1rem;
}

.foundation-primer > header p {
  margin: 0.4rem 0 0;
  color: var(--text-dim);
  font-size: 0.86rem;
  line-height: 1.5;
}

.foundation-repair > div {
  display: block;
  max-width: 68rem;
  border-top: 0;
}

.foundation-repair article {
  padding: 0.4rem 0 0.8rem;
  border: 0;
}

.foundation-repair article p {
  font-size: 0.86rem;
  line-height: 1.55;
}

.foundation-repair > p {
  max-width: 68rem;
  margin: 0 0 1rem;
  font-size: 0.9rem;
  line-height: 1.6;
}

.foundation-repair article h5 {
  margin: 0;
  font-size: 0.94rem;
}

.foundation-repair .foundation-retry-answer {
  padding: 0.55rem 0.75rem;
  margin: 0.6rem 0;
  border-left: 2px solid var(--accent-gold);
  color: var(--text);
}

.foundation-revision-notice {
  padding: 0.8rem 1rem;
  border-left: 2px solid var(--accent-gold);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* Give long lesson paragraphs the even left and right edges used by a word
   processor. Keep the final line natural, and leave controls, questions,
   feedback, and terminal text left aligned. */
@media (min-width: 681px) {
  .foundation-module-head > p:not(.foundation-path-position),
  .foundation-v8-purpose > span,
  .foundation-vocabulary-copy p,
  .foundation-orientation > header > p,
  .foundation-orientation-figure figcaption,
  .foundation-orientation-takeaways li,
  .foundation-mechanism-head > p,
  .foundation-mechanism-narrative > li > p,
  .foundation-memory > header p,
  .foundation-memory-explanation p,
  .foundation-d8-observation > header p,
  .foundation-d8-review > .foundation-d8-explanation,
  .foundation-model-takeaways p,
  .foundation-learning-ladder > header p,
  .foundation-worked-trace p,
  .foundation-worked-rule,
  .foundation-ladder-bridge,
  .foundation-source-lens > header p,
  .foundation-connected-copy p,
  .foundation-concept-prose article > p:not(.foundation-concept-question),
  .foundation-concept-prose article .foundation-example-code > p,
  .foundation-primer > header p,
  .foundation-primer-copy p,
  .foundation-repair article p {
    text-align: justify;
    text-align-last: left;
    text-justify: inter-word;
  }
}

.foundation-stage-actions {
  display: flex;
  justify-content: flex-end;
  padding: 0.9rem 0;
}

.foundation-source-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  min-height: 0;
  gap: 1rem;
}

.foundation-source-frame {
  min-width: 0;
  border: 1px solid var(--border-strong);
  background: var(--panel-inset);
}

.foundation-source-frame > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 2.6rem;
  padding: 0.45rem 0.75rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.foundation-source-frame > header .mono {
  overflow: hidden;
  color: var(--text-dim);
  font-size: 0.72rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.foundation-source-frame > header > span:last-child {
  flex: 0 0 auto;
  color: var(--text-faint);
  font-size: 0.66rem;
}

.foundation-code-viewer {
  height: auto;
  overflow-x: hidden;
  overflow-y: visible;
  font-size: 0.8rem;
}

.foundation-code-lines {
  width: 100%;
  min-width: 100%;
  padding-bottom: 4rem;
}

.foundation-code-section {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin: 1rem 0 0.45rem;
  padding: 0.65rem 0.8rem;
  border-block: 1px solid var(--border);
  background: color-mix(in srgb, var(--accent) 6%, var(--panel));
  color: var(--text);
}

.foundation-code-section:first-child {
  margin-top: 0;
}

.foundation-code-section strong {
  font-size: 0.78rem;
  line-height: 1.4;
}

.foundation-code-section code {
  max-width: 100%;
  color: var(--text-dim);
  font-size: 0.7rem;
  overflow-wrap: anywhere;
  text-align: right;
}

.foundation-code-line {
  display: grid;
  grid-template-columns: 3.8rem minmax(0, 1fr);
  align-items: start;
  min-height: 1.5rem;
  padding: 0.14rem 3.7rem 0.14rem 0;
  line-height: 1.45;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
  cursor: pointer;
}

.foundation-code-line:hover,
.foundation-code-line:focus-within {
  background: color-mix(in srgb, var(--accent) 9%, transparent);
}

.foundation-code-line:hover .code-line-no,
.foundation-code-line:focus-within .code-line-no {
  color: var(--accent);
}

.foundation-code-line .code-line-text {
  display: block;
  min-width: 0;
  line-height: inherit;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.foundation-code-line .code-line-no {
  position: static;
  width: auto;
  min-height: 1.16rem;
  padding: 0 0.8rem 0 0.4rem;
  border: 0;
  background: transparent;
  color: var(--text-faint);
  font: inherit;
  font-size: 0.76rem;
  line-height: inherit;
  text-align: right;
}

.foundation-code-line.is-mapped {
  background: color-mix(in srgb, var(--accent-secondary) 9%, transparent);
  color: var(--text);
}

.foundation-code-line.is-active-map {
  box-shadow: inset 2px 0 var(--accent-secondary);
  background: color-mix(in srgb, var(--accent-secondary) 15%, transparent);
}

.foundation-line-markers {
  position: absolute;
  top: 0.75rem;
  right: 0.6rem;
  display: flex;
  gap: 0.2rem;
  transform: translateY(-50%);
}

.foundation-line-markers span {
  display: grid;
  place-items: center;
  width: 1.45rem;
  height: 1.1rem;
  border: 1px solid var(--accent-secondary);
  color: var(--accent-secondary);
  font-size: 0.58rem;
}

.foundation-map-panel {
  min-width: 0;
  border: 1px solid var(--border-strong);
  background: var(--panel);
}

.foundation-source-intro {
  align-items: flex-start;
}

.foundation-source-intro > div > p {
  max-width: 50rem;
  margin: 0.35rem 0 0;
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.55;
}

.foundation-map-progress {
  margin-top: 0.2rem;
  color: var(--text);
  font-size: 0.72rem;
  white-space: nowrap;
}

.foundation-map-targets {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(19rem, 100%), 1fr));
  gap: 1px;
  background: var(--border);
}

.foundation-map-target {
  --foundation-target-copy-start: 3.7rem;
  --foundation-target-copy-end: 7.1rem;
  display: grid;
  grid-row: span 2;
  grid-template-rows: subgrid;
  min-width: 0;
  background: var(--panel);
}

.foundation-target-button {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr) minmax(5.4rem, auto);
  align-items: start;
  gap: 0.8rem;
  width: 100%;
  height: 100%;
  min-height: 7.2rem;
  padding: 0.85rem 0.9rem;
  border: 0;
  background: transparent;
  color: var(--text-dim);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.foundation-map-target.is-active .foundation-target-button {
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  color: var(--text);
  box-shadow: inset 2px 0 var(--accent);
}

.foundation-target-number {
  color: var(--accent-secondary);
  font-size: 0.7rem;
}

.foundation-target-button strong,
.foundation-target-button small {
  display: block;
}

.foundation-target-button strong {
  color: var(--text);
  font-size: 0.86rem;
  line-height: 1.35;
}

.foundation-target-button small {
  margin-top: 0.3rem;
  max-width: 28rem;
  color: var(--text-dim);
  font-size: 0.76rem;
  line-height: 1.5;
}

.foundation-target-line {
  display: grid;
  justify-items: end;
  gap: 0.18rem;
  min-width: 5.4rem;
  color: var(--text-faint);
  font-size: 0.66rem;
  text-align: right;
}

.foundation-target-line span {
  color: var(--text-faint);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.foundation-target-line b {
  color: inherit;
  font-weight: 600;
}

.foundation-map-target.has-line .foundation-target-line {
  color: var(--accent-secondary);
}

.foundation-map-target.has-line .foundation-target-button {
  background: color-mix(in srgb, var(--accent-secondary) 4%, transparent);
}

.foundation-reflection,
.foundation-correction {
  display: grid;
  align-content: start;
  gap: 0.35rem;
  padding: 1rem 1.1rem;
  border: 0;
  background: transparent;
}

.foundation-correction {
  border-left: 2px solid var(--accent-gold);
  background: color-mix(in srgb, var(--accent-gold) 5%, var(--panel));
}

.foundation-reflection strong,
.foundation-correction strong {
  color: var(--text);
  font-size: 0.82rem;
  line-height: 1.5;
}

.foundation-reflection textarea,
.foundation-correction textarea {
  width: 100%;
  resize: vertical;
  font-size: var(--control-font-size);
  line-height: 1.4;
}

.foundation-reflection small,
.foundation-correction small {
  color: var(--text-faint);
  font-size: 0.7rem;
}

.foundation-writing-links {
  display: grid;
  gap: 0.25rem;
  margin: 0.15rem 0 0.25rem;
  padding: 0.55rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.72rem;
  line-height: 1.45;
}

.foundation-reflection-feedback {
  margin: 0.15rem 0 0;
  padding: 0.55rem 0.65rem;
  border-left: 2px solid var(--accent-gold);
  color: var(--text);
  background: color-mix(in srgb, var(--accent-gold) 8%, var(--panel));
  font-size: 0.72rem;
  line-height: 1.45;
}

.foundation-reflection textarea[aria-invalid="true"] {
  border-color: var(--accent-gold);
}

.foundation-target-feedback {
  align-self: stretch;
  margin: 0 var(--foundation-target-copy-end) 0.9rem var(--foundation-target-copy-start);
  padding: 0.65rem 0 0;
  border-top: 1px solid var(--good);
  background: transparent;
}

.foundation-target-feedback.is-revision {
  border-top-color: var(--accent-gold);
}

.foundation-target-feedback strong,
.foundation-target-feedback p {
  margin: 0;
  font-size: 0.75rem;
}

.foundation-target-feedback p {
  margin-top: 0.15rem;
  color: var(--text-dim);
  line-height: 1.4;
}

.foundation-map-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  border-top: 1px solid var(--border);
  background: var(--panel-inset);
}

.foundation-active-map {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) max-content;
  align-items: center;
  gap: 0.75rem;
  min-height: 3.1rem;
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--accent) 7%, var(--panel));
}

.foundation-active-map > span {
  color: var(--accent);
  font-size: 0.66rem;
}

.foundation-active-question {
  display: grid;
  gap: 0.12rem;
  min-width: 0;
}

.foundation-active-question > strong {
  min-width: 0;
  color: var(--text);
  font-size: 0.82rem;
}

.foundation-active-question > small,
.foundation-active-map > small {
  color: var(--text-dim);
  font-size: 0.7rem;
  line-height: 1.4;
}

.foundation-response-panel {
  border: 1px solid var(--border-strong);
  background: var(--panel);
}

.foundation-response-panel > header {
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--border);
}

.foundation-response-panel > header h4,
.foundation-response-panel > header p {
  margin: 0;
}

.foundation-response-panel > header h4 {
  margin-top: 0.2rem;
  font-size: 1rem;
}

.foundation-response-panel > header p {
  max-width: 48rem;
  margin-top: 0.35rem;
  color: var(--text-dim);
  font-size: 0.78rem;
  line-height: 1.5;
}

.foundation-response-fields {
  display: grid;
  grid-template-columns: minmax(22rem, 1fr) minmax(22rem, 1fr);
}

.foundation-response-fields > * {
  min-width: 0;
}

.foundation-response-fields > :first-child {
  border-right: 1px solid var(--border);
}

.foundation-response-fields .foundation-concept-checks {
  border: 0;
  background: transparent;
}

.foundation-map-result {
  margin-top: 0.75rem;
  padding: 0.75rem;
  border-left: 2px solid var(--good);
  background: var(--panel-inset);
}

.foundation-map-result.is-revision {
  border-color: var(--accent-gold);
}

.foundation-map-result p {
  margin: 0.2rem 0 0;
  color: var(--text-dim);
  font-size: 0.76rem;
}

.foundation-confirmation-diagram {
  margin: 0.9rem 0 0;
  padding: 1rem;
  border: 1px solid color-mix(in srgb, var(--good) 42%, var(--border));
  background: color-mix(in srgb, var(--good) 4%, var(--panel));
}

.foundation-confirmation-diagram figcaption {
  display: grid;
  gap: 0.18rem;
  margin-bottom: 0.85rem;
}

.foundation-confirmation-diagram figcaption span,
.foundation-confirmation-source span,
.foundation-confirmation-concept span {
  color: var(--text-faint);
  font: 0.64rem var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.foundation-confirmation-diagram figcaption p {
  margin: 0;
  color: var(--text);
  font-size: 0.84rem;
}

.foundation-confirmation-diagram ol {
  display: grid;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.foundation-confirmation-row {
  display: grid;
  grid-template-columns: minmax(12rem, 1.15fr) 3rem minmax(11rem, 0.85fr);
  align-items: stretch;
}

.foundation-confirmation-source,
.foundation-confirmation-concept {
  display: grid;
  min-width: 0;
  gap: 0.2rem;
  padding: 0.6rem 0.7rem;
  background: var(--panel-inset);
}

.foundation-confirmation-source code {
  overflow: hidden;
  color: var(--text-dim);
  font-size: 0.7rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.foundation-confirmation-concept strong {
  overflow-wrap: anywhere;
  color: var(--text);
  font-size: 0.75rem;
}

.foundation-confirmation-connector {
  position: relative;
  min-height: 2.8rem;
}

.foundation-confirmation-connector::before {
  position: absolute;
  top: 50%;
  right: 0;
  left: 0;
  height: 1px;
  background: color-mix(in srgb, var(--good) 65%, var(--border));
  content: "";
}

.foundation-confirmation-connector i {
  position: absolute;
  top: calc(50% - 0.22rem);
  right: calc(50% - 0.22rem);
  width: 0.44rem;
  height: 0.44rem;
  border: 1px solid var(--good);
  border-radius: 50%;
  background: var(--panel);
}

.foundation-confirmation-status {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.85rem;
  padding-top: 0.8rem;
  border-top: 1px solid color-mix(in srgb, var(--good) 35%, var(--border));
}

.foundation-confirmation-status > span {
  display: grid;
  min-width: 3.3rem;
  min-height: 2.25rem;
  place-items: center;
  border: 1px solid var(--good);
  color: var(--good);
  font: 0.76rem var(--font-mono);
}

.foundation-confirmation-status strong,
.foundation-confirmation-status p {
  margin: 0;
}

.foundation-confirmation-status strong {
  color: var(--text);
  font-size: 0.76rem;
}

.foundation-confirmation-status p {
  margin-top: 0.1rem;
  color: var(--text-dim);
  font-size: 0.7rem;
}

.foundation-session-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.foundation-session-metrics article {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 0.75rem;
  border-right: 1px solid var(--border);
}

.foundation-session-metrics article:last-child {
  border-right: 0;
}

.foundation-session-metrics span,
.foundation-session-metrics small {
  color: var(--text-faint);
  font-size: 0.66rem;
}

.foundation-session-metrics strong {
  margin: 0.12rem 0;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 1rem;
}

.foundation-trial-feedback {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid color-mix(in srgb, var(--accent) 48%, var(--border));
  background: color-mix(in srgb, var(--accent) 4%, var(--panel));
}

.foundation-trial-feedback header h3,
.foundation-trial-feedback header p {
  margin: 0;
}

.foundation-trial-feedback header h3 {
  margin-top: 0.2rem;
}

.foundation-trial-feedback header p {
  margin-top: 0.4rem;
  color: var(--text-dim);
  font-size: 0.82rem;
  line-height: 1.5;
}

.foundation-trial-feedback form {
  display: grid;
  gap: 0.9rem;
  margin-top: 1rem;
}

.foundation-trial-feedback fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.foundation-trial-feedback legend {
  margin-bottom: 0.65rem;
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1.5;
}

.foundation-trial-feedback-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  gap: 0.5rem;
}

.foundation-trial-feedback-options label {
  display: flex;
  min-height: 2.75rem;
  gap: 0.55rem;
  align-items: center;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  color: var(--text);
  cursor: pointer;
}

.foundation-trial-feedback-options label:focus-within {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.foundation-trial-feedback-options input {
  flex: 0 0 auto;
  margin: 0;
  accent-color: var(--accent);
}

.foundation-trial-feedback-comment {
  display: grid;
  gap: 0.2rem;
  color: var(--text);
  font-size: 0.84rem;
}

.foundation-trial-feedback-comment span {
  color: var(--text-faint);
  font-size: 0.72rem;
}

.foundation-trial-feedback textarea {
  width: 100%;
  min-height: 7rem;
  resize: vertical;
}

.foundation-trial-feedback-error {
  margin: 0;
}

.foundation-trial-feedback-actions {
  display: flex;
  justify-content: flex-end;
}

.foundation-trial-feedback-saved {
  display: inline-flex;
  gap: 0.35rem;
  align-items: center;
  margin: 1rem 0 0;
  color: var(--text-faint);
  font-size: var(--type-small);
}

.foundation-trial-feedback-saved span {
  color: var(--good);
}

@media (max-width: 680px) {
  .foundation-trial-feedback-options {
    grid-template-columns: 1fr;
  }

  .foundation-trial-feedback-actions,
  .foundation-trial-feedback-actions .btn {
    width: 100%;
  }
}

.foundation-coach-panel {
  margin-top: 1rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.foundation-coach-panel .history-section-head {
  min-height: 3.6rem;
}

.foundation-coach-body {
  padding: 0.85rem 0;
  color: var(--text-dim);
  font-size: 0.78rem;
}

.foundation-coach-body > :first-child {
  margin-top: 0;
}

.foundation-coach-body > :last-child {
  margin-bottom: 0;
}

.foundation-coach-loading {
  display: grid;
  max-width: 32rem;
  gap: 0.65rem;
  min-height: 3.25rem;
}

.foundation-coach-loading strong,
.foundation-coach-loading p {
  margin: 0;
}

.foundation-coach-loading strong {
  color: var(--text);
  font-size: 0.76rem;
}

.foundation-coach-loading p {
  margin-top: 0.15rem;
  color: var(--text-faint);
  font-size: 0.68rem;
}

.foundation-coach-progress {
  position: relative;
  display: block;
  width: min(24rem, 100%);
  height: 2px;
  overflow: hidden;
  background: var(--border);
}

.foundation-coach-progress i {
  position: absolute;
  inset: 0 auto 0 0;
  width: 38%;
  background: linear-gradient(90deg, transparent, var(--accent-secondary), transparent);
  animation: foundation-coach-progress 1.35s ease-in-out infinite;
}

@keyframes foundation-coach-progress {
  from { transform: translateX(-110%); }
  to { transform: translateX(365%); }
}

@media (prefers-reduced-motion: reduce) {
  .foundation-coach-progress i {
    animation: none;
    transform: translateX(80%);
  }

  .foundation-memory-node,
  .foundation-diagram-edge {
    animation: none;
  }
}

@media (max-width: 1100px) {
.foundation-vocabulary dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .foundation-vocabulary dl > div {
    border-bottom: 1px solid var(--border);
  }

.foundation-vocabulary dl > div:nth-child(2n) {
    border-right: 0;
  }

  .foundation-vocabulary dl > div:nth-last-child(-n + 2) {
    border-bottom: 0;
  }

}

@media (max-width: 680px) {
  .foundation-orientation-svg {
    max-height: none;
  }

.foundation-mechanism-head,
  .foundation-memory > header,
  .foundation-vocabulary > header {
    grid-template-columns: minmax(0, 1fr);
  }

  .foundation-vocabulary > header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.55rem;
  }

  .foundation-vocabulary > header > p {
    justify-self: start;
    text-align: left;
  }

.foundation-vocabulary dl {
    grid-template-columns: minmax(0, 1fr);
  }

  .foundation-vocabulary dl > div,
  .foundation-vocabulary dl > div:nth-child(2n),
  .foundation-vocabulary dl > div:nth-last-child(-n + 2) {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .foundation-vocabulary dl > div:last-child {
    border-bottom: 0;
  }

  .foundation-mechanism-head {
    gap: 0.45rem;
  }

  .foundation-mechanism-head {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .foundation-memory-width {
    max-width: 4.5rem;
    white-space: normal;
  }
}

@media (max-width: 900px) {
  .source-context-drawer {
    top: 0;
    width: 100%;
  }

  .foundations-header,
  .foundations-layout {
    display: block;
  }

  .foundations-header p {
    margin-top: 0.75rem;
  }

  .foundation-nav {
    display: flex;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .foundation-nav-row {
    flex: 0 0 14rem;
    border-right: 1px solid var(--border);
  }

  .foundation-main {
    padding: 1rem;
  }

  .foundation-source-workspace,
  .foundation-session-metrics {
    grid-template-columns: 1fr;
  }

  .foundation-stage-intro {
    display: block;
  }

  .foundation-stage-intro > p {
    margin-top: 0.45rem;
  }

  .foundation-v8-purpose {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.2rem;
  }

  .foundation-primer,
  .foundation-primer dl {
    grid-template-columns: 1fr;
  }

  .foundation-primer > header {
    padding-right: 0;
  }

  .foundation-primer dl {
    border-top: 1px solid var(--border);
    border-left: 0;
  }

  .foundation-primer dl > div,
  .foundation-primer dl > div:nth-child(2n),
  .foundation-primer dl > div:nth-last-child(-n + 2) {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .foundation-primer dl > div:last-child {
    border-bottom: 0;
  }

  .foundation-source-frame {
    border-right: 0;
    border-bottom: 1px solid var(--border-strong);
  }

  .foundation-source-workspace {
    height: auto;
  }

  .foundation-map-panel {
    overflow: visible;
  }

  .foundation-map-progress {
    display: block;
    margin-top: 0.45rem;
  }

  .foundation-response-fields {
    grid-template-columns: minmax(0, 1fr);
  }

  .foundation-response-fields > :first-child {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .foundation-active-map {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .foundation-active-map > small {
    grid-column: 1 / -1;
  }

  .foundation-session-metrics article {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .foundation-memory {
    padding: 1.1rem 0 0;
  }
}

@media (max-width: 560px) {
  .foundation-session-map-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.5rem;
  }

  .foundation-session-progress {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
  }

  .foundation-session-progress li {
    justify-content: flex-start;
    min-height: 3.6rem;
    padding: 0;
  }

  .foundation-session-progress li.foundation-progress-static {
    padding: 0.5rem;
  }

  .foundation-progress-button {
    min-height: 3.5rem;
    padding: 0.5rem;
  }

  .foundation-session-progress li strong {
    display: block;
  }

  .foundation-session-progress li:not(:last-child)::after {
    display: none;
  }

  .foundation-source-frame > header {
    align-items: start;
    flex-direction: column;
    gap: 0.15rem;
  }

  .foundation-target-button {
    grid-template-columns: 1.5rem minmax(0, 1fr);
  }

  .foundation-map-target {
    --foundation-target-copy-start: 3.2rem;
    --foundation-target-copy-end: 0.9rem;
  }

  .foundation-target-line {
    grid-column: 2;
    text-align: left;
  }

  .foundation-target-feedback {
    margin-left: var(--foundation-target-copy-start);
  }

  .foundation-confirmation-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .foundation-confirmation-connector {
    width: 2rem;
    min-height: 1.4rem;
  }

  .foundation-confirmation-connector::before {
    top: 0;
    bottom: 0;
    left: 1rem;
    width: 1px;
    height: auto;
  }

  .foundation-confirmation-connector i {
    top: calc(50% - 0.22rem);
    right: auto;
    left: calc(1rem - 0.22rem);
  }
}

/* ---------------------------------------------------------------------- */
/* Discarded attempt review                                                */
/* ---------------------------------------------------------------------- */

.attempt-review-page {
  width: 100%;
  max-width: 1120px;
  margin: 0;
}

.attempt-review-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.attempt-review-head h1,
.attempt-review-head p {
  margin: 0;
}

.attempt-review-head h1 {
  margin-top: 0.15rem;
  font-size: 1.65rem;
}

.attempt-review-head p {
  color: var(--text-dim);
}

.attempt-summary-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--border);
  background: var(--panel);
}

.attempt-summary-band > div {
  display: flex;
  flex-direction: column;
  padding: 0.8rem 1rem;
  border-left: 1px solid var(--border);
}

.attempt-summary-band > div:first-child {
  border-left: 0;
}

.attempt-summary-band span {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  text-transform: uppercase;
}

.attempt-summary-band strong {
  font-size: 0.95rem;
}

.attempt-section {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.attempt-section h2 {
  margin: 0;
  font-size: 1.05rem;
}

.attempt-gap-list {
  border-top: 1px solid var(--border);
}

.attempt-gap-row {
  display: grid;
  grid-template-columns: 12rem minmax(0, 1fr);
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border);
}

.attempt-gap-row > div strong,
.attempt-gap-row > div span {
  display: block;
}

.attempt-gap-row > div strong {
  font-size: 0.84rem;
}

.attempt-gap-row > div span {
  color: var(--text-faint);
  font-size: 0.72rem;
}

.attempt-gap-row ul {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.attempt-gap-row li {
  display: grid;
  grid-template-columns: minmax(10rem, 0.45fr) minmax(0, 1fr);
  gap: 0.65rem;
  color: var(--text-dim);
  font-size: 0.8rem;
}

.attempt-gap-row code {
  overflow: hidden;
  color: var(--text-faint);
  font-size: 0.68rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.attempt-foundation-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.attempt-record-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--border);
  list-style: none;
}

.attempt-record-list > li {
  display: grid;
  grid-template-columns: 9rem minmax(12rem, 0.7fr) minmax(0, 1.3fr);
  gap: 0.8rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
}

.attempt-record-list > li > div {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
}

.attempt-record-kind {
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  text-transform: uppercase;
}

.attempt-record-list code {
  overflow: hidden;
  color: var(--text-faint);
  font-size: 0.68rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.attempt-record-list p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.82rem;
}

.history-attempt-archive {
  border-bottom: 1px solid var(--border);
}

.history-attempt-archive > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 0;
  color: var(--text-dim);
  font-size: 0.78rem;
  cursor: pointer;
}

.history-attempt-archive > summary span {
  color: var(--text-faint);
  font-family: var(--font-mono);
}

@media (max-width: 760px) {
  .attempt-review-head {
    align-items: stretch;
    flex-direction: column;
  }

  .attempt-summary-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .attempt-summary-band > div:nth-child(3) {
    border-left: 0;
    border-top: 1px solid var(--border);
  }

  .attempt-summary-band > div:nth-child(4) {
    border-top: 1px solid var(--border);
  }

  .attempt-gap-row,
  .attempt-record-list > li {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .attempt-gap-row li {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }
}

.line-comments {
  grid-column: 1 / -1;
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  max-height: 8rem;
  overflow: auto;
}

.line-comments li {
  display: grid;
  grid-template-columns: 5rem 2.5rem minmax(0, 1fr);
  gap: 0.45rem;
  color: var(--text-dim);
  font-size: 0.8rem;
}

.line-note-hypothesis {
  display: inline-flex;
  align-items: center;
  width: 6.25rem;
  min-height: 1.5rem;
  padding: 0 0.35rem;
  border-left: 1px solid var(--border-strong);
  white-space: nowrap;
}

.line-note-hypothesis.is-empty {
  visibility: hidden;
}

.comment-thread {
  color: var(--accent-strong);
}

.tok-keyword {
  color: var(--tok-keyword);
}

.tok-function {
  color: var(--tok-function);
}

.tok-string {
  color: var(--tok-string);
}

.tok-number {
  color: var(--tok-number);
}

.tok-comment {
  color: var(--text-faint);
  font-style: italic;
}

.tok-preprocessor {
  color: var(--tok-preprocessor);
}

.tok-type {
  color: var(--tok-type);
}

.tok-constant {
  color: var(--tok-constant);
}

.tok-operator {
  color: var(--tok-operator);
}

@media (max-width: 860px) {
  .code-browser-grid {
    grid-template-columns: 1fr;
    height: auto;
    min-height: 0;
    max-height: none;
  }

  .code-tree {
    height: 14rem;
    max-height: 14rem;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .code-viewer {
    height: var(--editor-height);
    max-height: var(--editor-height);
  }

  .code-pane.has-note {
    grid-template-rows: minmax(0, 1fr) auto;
    gap: 0.5rem;
    padding: 0 0.5rem 0.5rem 0;
  }

  .code-splitter {
    display: none;
  }

  .line-note-bar {
    grid-column: 1;
    grid-row: 2;
    grid-template-columns: minmax(0, 1fr) auto;
    max-height: 14rem;
    margin: 0;
  }

}

/* ---------------------------------------------------------------------- */
/* Ladder gauge (the signature element)                                    */
/* ---------------------------------------------------------------------- */

.reasoning-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(19rem, 0.75fr);
  gap: 1.25rem;
  align-items: start;
}

.reasoning-panel .hypotheses-open {
  margin: 1rem 0;
  padding: 1rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.reasoning-form {
  padding: 0;
  border: 0;
  background: transparent;
}

.reasoning-form.identify-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 0.65rem;
}

.reasoning-form.identify-form h3 {
  grid-column: 1 / -1;
  margin: 0;
}

.reasoning-form.identify-form .btn {
  grid-column: 1 / -1;
  justify-self: end;
  align-self: center;
  margin: 0.1rem 0 0;
}

.confidence-control {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 3.2rem;
  align-items: center;
  gap: 0.65rem;
}

.confidence-control output {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-align: right;
}

.study-tools {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.study-tools > summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0.25rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.study-tools[open] > summary {
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.study-tools-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(20rem, 0.85fr);
  gap: 1.25rem;
  padding: 1rem 0;
}

.study-tools .probe-form {
  grid-column: auto;
}

.probe-settings {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr) 6rem;
  gap: 0.65rem;
}

.activity-tools {
  min-width: 0;
}

.timeline-block h3 {
  margin-top: 0;
}

@media (max-width: 860px) {
  .reasoning-grid,
  .study-tools-grid {
    grid-template-columns: 1fr;
  }

  .reasoning-form.identify-form,
  .probe-settings {
    grid-template-columns: 1fr;
  }

  .reasoning-form.identify-form h3 {
    grid-column: 1;
  }

  .reasoning-form.identify-form .btn {
    grid-column: 1;
    width: 100%;
  }
}

.ladder {
  list-style: none;
  margin: 0;
  padding: 0;
}

.hint-checkpoint {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.hint-checkpoint input {
  width: 100%;
}

.retrieval-grade-form {
  display: grid;
  gap: 0.75rem;
}

.ladder-rung {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0 0.55rem 1.6rem;
}

.ladder-rung::before {
  content: "";
  position: absolute;
  left: 0.29rem;
  top: 1.35rem;
  bottom: -0.55rem;
  width: 2px;
  background: var(--border-strong);
}

.ladder-rung:last-child::before {
  display: none;
}

.ladder-rung.is-unsealed::before {
  background: var(--accent);
}

.rung-node {
  position: absolute;
  left: 0;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--panel-inset);
  border: 2px solid var(--border-strong);
}

.ladder-rung.is-unsealed .rung-node {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 17%, transparent);
}

.ladder-rung.is-available .rung-node {
  border-color: var(--accent);
}

.ladder-rung.is-locked .rung-label {
  opacity: 0.58;
}

.rung-label {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.ladder-rung.is-unsealed .rung-label {
  color: var(--text);
}

.rung-label em {
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.72rem;
  color: var(--text-faint);
  margin-left: 0.35rem;
}

.rung-note {
  margin-left: auto;
  font-size: 0.72rem;
  color: var(--text-faint);
}

.reveal-panel {
  margin-top: 1rem;
  border-top: 1px dashed var(--border-strong);
  padding-top: 0.85rem;
}

.reveal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
  color: var(--accent-strong);
}

.reveal-text {
  max-height: 22rem;
  overflow: auto;
  background: var(--panel-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.82rem;
}

/* ---------------------------------------------------------------------- */
/* Logger forms                                                            */
/* ---------------------------------------------------------------------- */

@media (max-width: 640px) {

  .probe-form {
    grid-column: 1;
  }
}

.logger-form {
  background: var(--panel-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.model-panel .transfer-form {
  padding: 0;
  border: 0;
  background: transparent;
}

.model-orientation-note {
  margin: 0 0 0.65rem;
  color: var(--text-dim);
  font-size: 0.84rem;
}

.logger-form label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.78rem;
  color: var(--text-dim);
}

.form-note {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.82rem;
}

.logger-form .checkbox-label {
  flex-direction: row;
  align-items: center;
  gap: 0.45rem;
}

.logger-form input[type="text"],
.logger-form input[type="range"],
.logger-form select,
.logger-form textarea {
  width: 100%;
  max-width: 100%;
  font-family: var(--font-sans);
  font-size: var(--control-font-size);
  line-height: var(--control-line-height);
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: var(--panel);
  color: var(--text);
}

.logger-form textarea {
  resize: vertical;
  font-family: var(--font-mono);
}

.logger-form input[type="number"] {
  font-family: var(--font-sans);
  font-size: var(--control-font-size);
  line-height: var(--control-line-height);
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: var(--panel);
  color: var(--text);
}

.probe-form {
  grid-column: 1 / -1;
}

.probe-output {
  margin: 0.35rem 0 0;
  max-height: 18rem;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 0.65rem;
  color: var(--text-dim);
}

.logger-form button {
  align-self: flex-start;
  margin-top: 0.25rem;
}

/* This component must follow .logger-form so shared form rules cannot
   collapse its full-width grid back into a right-aligned flex column. */
.study-tools-grid > .idle-form {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 0.65rem;
  width: 100%;
  margin: 0;
  padding: 0 0 1rem;
  border: 0;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  background: transparent;
}

.idle-form-head {
  grid-column: 1 / -1;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.idle-form-head h3 {
  margin: 0;
  color: var(--text);
  font-size: 0.86rem;
}

.study-tools-grid > .idle-form label {
  min-width: 0;
}

.study-tools-grid > .idle-form input {
  min-height: 2.4rem;
}

.study-tools-grid > .idle-form .btn {
  align-self: end;
  min-height: 2.4rem;
  margin: 0;
}

@media (max-width: 520px) {
  .study-tools-grid > .idle-form {
    grid-template-columns: minmax(0, 1fr);
  }

  .study-tools-grid > .idle-form .btn {
    width: 100%;
  }
}

.hypotheses-open {
  margin-bottom: 1.25rem;
}

.open-hypotheses {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.open-hypotheses li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--panel-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.4rem 0.6rem;
  font-size: 0.85rem;
}

.open-hypotheses .claim {
  flex: 1;
}

.open-hypotheses .resolve-btn {
  font-size: 0.72rem;
  padding: 0.25rem 0.5rem;
}

/* ---------------------------------------------------------------------- */
/* Timeline                                                                */
/* ---------------------------------------------------------------------- */

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 26rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.event {
  display: grid;
  grid-template-columns: 11rem 8rem 1fr;
  gap: 0.6rem;
  padding: 0.35rem 0.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.82rem;
  align-items: baseline;
}

.event-time {
  color: var(--text-faint);
  font-size: 0.75rem;
}

.event-kind {
  color: var(--text-dim);
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

.event-focus .event-kind,
.event-identified .event-kind,
.event-practice .event-kind {
  color: var(--accent-strong);
}

.event-hypothesis_resolved .event-kind,
.event-test .event-kind {
  color: var(--good);
}

@media (max-width: 640px) {
  .event {
    grid-template-columns: 1fr;
  }
}

/* ---------------------------------------------------------------------- */
/* Submit & close                                                          */
/* ---------------------------------------------------------------------- */

.submit-close-panel {
  margin-top: 0;
  border-top: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 5.5rem;
}

.submit-close-panel[hidden] {
  display: none;
}

.finish-gate-summary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 0;
  list-style: none;
  cursor: pointer;
}

.finish-gate-summary::-webkit-details-marker {
  display: none;
}

.finish-gate-summary::after {
  margin-left: auto;
  color: var(--text-faint);
  content: "+";
  font-family: var(--font-mono);
  font-size: 1rem;
}

.submit-close-panel[open] > .finish-gate-summary::after {
  content: "-";
}

.finish-gate-summary > span:not(.study-phase-number) {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.finish-gate-summary strong {
  font-size: 0.9rem;
}

.finish-gate-summary small {
  color: var(--text-faint);
  font-size: 0.72rem;
  font-weight: 400;
}

.finish-panel {
  display: grid;
  min-width: 0;
  max-width: none;
  margin: 0 0 1rem 2.5rem;
  padding: 0.85rem;
  border-color: var(--border-strong);
  background: var(--panel-inset);
  gap: 0.8rem;
}

.finish-intro {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--border);
}

.finish-intro strong {
  color: var(--text);
  font-size: 0.86rem;
}

.finish-intro p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.78rem;
}

.finish-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.finish-fields textarea {
  min-height: 6.25rem;
}

.finish-outcome {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.finish-outcome legend {
  margin-bottom: 0.3rem;
  color: var(--text-dim);
  font-size: 0.78rem;
}

.finish-actions {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.1rem;
}

.finish-actions > .btn {
  flex: none;
  margin: 0;
}

.finish-notes > summary {
  color: var(--text-dim);
  font-size: 0.75rem;
  cursor: pointer;
}

.finish-notes label {
  margin-top: 0.5rem;
}

.finish-notes {
  min-width: 0;
  flex: 1;
}

@media (max-width: 680px) {
  .finish-panel {
    margin-left: 0;
  }

  .finish-intro,
  .finish-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .finish-fields {
    grid-template-columns: 1fr;
  }

  .finish-actions > .btn {
    width: 100%;
  }
}

/* ---------------------------------------------------------------------- */
/* Review page                                                             */
/* ---------------------------------------------------------------------- */

.kv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr));
  gap: 0.85rem 1.25rem;
  margin: 0;
}

.kv-grid dt {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
}

.kv-grid dd {
  margin: 0;
  color: var(--text);
}

.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 1rem;
}

#metrics-panel {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
}

.metrics-section-heading {
  margin: 1rem 0 0.55rem;
  font-size: 0.82rem;
}

.metric-feedback {
  border-top: 1px solid var(--border);
}

.metric-feedback-row {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  align-items: start;
  gap: 0.9rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
}

.metric-feedback-status {
  display: inline-flex;
  justify-content: center;
  width: 6.5rem;
  padding: 0.15rem 0.45rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  font-size: 0.68rem;
  font-weight: 700;
}

.metric-feedback-row.is-good .metric-feedback-status {
  border-color: color-mix(in srgb, var(--good) 58%, var(--border));
  color: var(--good);
}

.metric-feedback-row.is-bad .metric-feedback-status {
  border-color: color-mix(in srgb, var(--bad) 58%, var(--border));
  color: var(--bad);
}

.metric-feedback-row.is-neutral .metric-feedback-status {
  color: var(--text-dim);
}

.metric-feedback-row strong {
  font-size: 0.8rem;
}

.metric-feedback-row p {
  margin: 0.1rem 0 0;
  color: var(--text-dim);
  font-size: 0.76rem;
}

.stat-tile {
  flex: 1 1 130px;
  background: var(--panel-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.7rem 0.9rem;
}

.stat-tile .value {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--text);
}

.stat-tile .label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.attn-bar {
  display: flex;
  height: 1.4rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-strong);
  margin-bottom: 0.5rem;
}

.attn-bar .on-bug {
  background: var(--accent);
}

.attn-bar .off-bug {
  background: var(--muted-bar);
}

.attn-legend {
  display: flex;
  gap: 1.25rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.attn-legend .swatch {
  display: inline-block;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 2px;
  margin-right: 0.35rem;
  vertical-align: middle;
}

.swatch-on-bug {
  background: var(--accent);
}

.swatch-off-bug {
  background: var(--muted-bar);
}

.dwell-table,
.calibration-table {
  width: 100%;
  max-width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.metrics-table-wrap {
  width: 100%;
  max-width: 100%;
  margin-bottom: 1rem;
  overflow-x: auto;
}

.dwell-table td,
.calibration-table td,
.calibration-table th {
  padding: 0.3rem 0.5rem;
  border-bottom: 1px solid var(--border);
  overflow-wrap: anywhere;
  text-align: left;
}

.dwell-table td:last-child {
  width: 7rem;
  text-align: right;
}

.calibration-table th:nth-child(2),
.calibration-table td:nth-child(2) {
  width: 7rem;
}

.calibration-table th:last-child,
.calibration-table td:last-child {
  width: 8rem;
}

/* AI coach (per-rep) and the longitudinal monitor report */
.coach-panel {
  border-left-color: var(--border);
}
.coach-body {
  white-space: pre-wrap;
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--text);
  background: var(--panel-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  font-size: 0.9rem;
}
.coach-actions {
  margin-top: 0.75rem;
}

/* ---------------------------------------------------------------------- */
/* Mechanism learning flow                                                 */
/* ---------------------------------------------------------------------- */

.transfer-level {
  display: inline-grid;
  place-items: center;
  width: 1.45rem;
  height: 1.45rem;
  margin-right: 0.3rem;
  border: 1px solid var(--accent);
  border-radius: 50%;
  color: var(--accent-strong);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1;
}

.model-canvas {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.model-canvas label {
  min-width: 0;
  padding: 0.75rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.model-canvas label > span {
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
}

.model-canvas textarea {
  border: 0;
  background: transparent;
  resize: vertical;
}

.outcome-segments {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  overflow: hidden;
}

.outcome-segments label {
  display: block;
  min-width: 0;
  border-right: 1px solid var(--border-strong);
  cursor: pointer;
}

.outcome-segments label:last-child {
  border-right: 0;
}

.outcome-segments input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.outcome-segments span {
  display: block;
  padding: 0.5rem 0.35rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-align: center;
}

.outcome-segments input:checked + span {
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}

.causal-chain-editor {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.causal-chain-editor label {
  position: relative;
  display: grid;
  min-width: 0;
  gap: 0.35rem;
  padding: 0.65rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.causal-chain-editor label > span {
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
}

.causal-chain-editor input {
  width: 100%;
  border: 0;
  background: transparent;
  font-size: var(--control-font-size);
  line-height: var(--control-line-height);
}

.causal-chain-editor input:focus {
  outline: 0;
}

.open-hypotheses li {
  display: block;
  padding: 0;
  overflow: hidden;
}

.hypothesis-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 3rem auto;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 0.65rem;
}

.open-hypotheses li.is-active {
  border-color: var(--accent);
}

.hypothesis-thread-select {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  min-width: 0;
  gap: 0.5rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.hypothesis-thread-id,
.hypothesis-thread-state,
.hypothesis-evidence > span,
.hypothesis-evidence li > span,
.line-note-hypothesis,
.comment-thread {
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
}

.hypothesis-thread-state {
  color: var(--text-faint);
}

.is-active .hypothesis-thread-state {
  color: var(--accent-strong);
}

.hypothesis-evidence {
  display: grid;
  grid-template-columns: 5.5rem minmax(0, 1fr);
  gap: 0.55rem;
  padding: 0.5rem 0.65rem;
  border-top: 1px solid var(--border);
  background: var(--panel-inset);
}

.hypothesis-evidence ul {
  display: grid;
  min-width: 0;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hypothesis-evidence li {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  min-width: 0;
  gap: 0.4rem;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--text-dim);
  font-size: 0.7rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hypothesis-confidence {
  color: var(--text-faint);
  font-size: 0.68rem;
  text-align: right;
}

.hypothesis-actions {
  display: flex;
  gap: 0.3rem;
}

.open-hypotheses .resolve-btn.is-selected {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.resolution-tray {
  padding: 0.65rem;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.evidence-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.55rem;
}

.evidence-chip {
  max-width: 100%;
  padding: 0.35rem 0.5rem;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--panel-bright);
  color: var(--text-dim);
  font-size: 0.72rem;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
}

.evidence-chip span {
  margin-right: 0.4rem;
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
}

.evidence-chip.is-selected {
  border-color: var(--accent);
  color: var(--text);
}

.resolution-revision {
  width: 100%;
  margin-bottom: 0.5rem;
  padding: 0.5rem;
}

/* Recall is a chain reconstruction, not a field questionnaire. */
.recall-header {
  margin-bottom: 1.1rem;
}

.retrieval-card .panel-head > div {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.retrieval-card .panel-head h2 {
  margin: 0;
}

.retrieval-card .retrieval-attempt-form {
  padding: 0;
  border: 0;
  background: transparent;
}

.recall-chain {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.recall-comparison-chain {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.recall-result-node {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 0.65rem;
  border: 0;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--panel-inset);
  color: var(--text);
  text-align: left;
}

.recall-result-node.is-missed {
  background: color-mix(in srgb, var(--bad) 10%, transparent);
}

.recall-result-node.is-match {
  background: color-mix(in srgb, var(--good) 9%, transparent);
}

.recall-result-label {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
}

.recall-result-label em {
  color: var(--good);
  font-size: 0.58rem;
  font-style: normal;
}

.is-missed .recall-result-label em {
  color: var(--bad);
}

.is-match .recall-result-label em {
  color: var(--good);
}

.recall-result-node small {
  margin-top: 0.45rem;
  color: var(--text-faint);
  font-size: 0.62rem;
}

.recall-result-node > span:not(.recall-result-label) {
  overflow-wrap: anywhere;
  font-size: 0.75rem;
}

.recall-result-choice {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.35rem;
  margin-top: auto;
  padding-top: 0.7rem;
}

.recall-result-choice button {
  min-height: 2rem;
  padding: 0.35rem 0.45rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--panel);
  color: var(--text-dim);
  font: inherit;
  font-size: 0.7rem;
  cursor: pointer;
}

.recall-result-choice button[aria-pressed="true"] {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, var(--panel));
  color: var(--text);
}

.recall-empty {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.recall-empty h2,
.recall-empty p {
  margin: 0;
}

.recall-empty h2 {
  font-size: 0.95rem;
}

.recall-empty p {
  margin-top: 0.2rem;
  color: var(--text-dim);
  font-size: 0.82rem;
}

/* Focused case review */
#review {
  display: flex;
  width: 100%;
  max-width: 1120px;
  margin: 0;
  flex-direction: column;
  gap: 1rem;
}

.review-kicker {
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.review-outcome-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
}

.review-outcome-line .pill,
.review-surface {
  line-height: 1.4;
}

.review-route {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border: 1px solid var(--border);
  list-style: none;
}

.review-route li {
  display: grid;
  grid-template-columns: 1.8rem minmax(0, 1fr);
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
  padding: 0.7rem 0.85rem;
  border-right: 1px solid var(--border);
  color: var(--text-faint);
}

.review-route li:last-child {
  border-right: 0;
}

.review-route li > span {
  display: grid;
  width: 1.7rem;
  height: 1.7rem;
  place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.65rem;
}

.review-route div {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.review-route strong {
  color: inherit;
  font-size: 0.78rem;
}

.review-route small {
  font-size: 0.66rem;
}

.review-route .is-current {
  background: var(--panel);
  color: var(--text);
}

.review-route .is-current > span {
  border-color: var(--accent);
  color: var(--accent-strong);
}

.review-route .is-complete {
  color: var(--text-dim);
}

.review-route .is-complete > span {
  border-color: var(--good);
  color: var(--good);
}

.review-step {
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.review-step > summary {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
  min-height: 4rem;
  padding: 0.75rem 1rem;
  cursor: pointer;
  list-style: none;
}

.review-step > summary::-webkit-details-marker {
  display: none;
}

.review-step > summary > span:nth-child(2) {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.review-step > summary strong {
  font-size: 0.9rem;
}

.review-step > summary small {
  color: var(--text-dim);
  font-size: 0.75rem;
}

.review-step-number {
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.review-step-state {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  text-transform: uppercase;
}

.review-step[open] > summary {
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.review-step[open] .review-step-state {
  color: var(--accent-strong);
}

.review-step-body {
  padding: 1rem;
}

.review-model-compact {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 1rem;
  border: 1px solid var(--border);
}

.review-model-compact > div {
  min-width: 0;
  padding: 0.8rem;
  border-right: 1px solid var(--border);
}

.review-model-compact > div:last-child {
  border-right: 0;
}

.review-model-compact span {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  text-transform: uppercase;
}

.review-model-compact p {
  margin: 0.25rem 0 0;
  color: var(--text-dim);
  font-size: 0.82rem;
}

.review-model-compact small {
  display: block;
  margin-top: 0.35rem;
  color: var(--text-faint);
  font-size: 0.72rem;
}

.review-answer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0;
  border-top: 1px solid var(--border);
}

.review-answer h2,
.review-answer p {
  margin: 0;
}

.review-answer h2 {
  font-size: 0.88rem;
}

.review-answer p {
  color: var(--text-dim);
  font-size: 0.8rem;
}

.review-source-contrast {
  margin-top: 1rem;
  border-top: 1px solid var(--border);
}

.review-source-contrast > summary,
.review-inner-details > summary {
  padding: 0.75rem 0;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
}

.review-source-contrast > summary span {
  float: right;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 400;
}

.contrast-form {
  padding-top: 0.25rem;
}

.contrast-hunk {
  margin-bottom: 0.75rem;
  border: 1px solid var(--border);
}

.contrast-hunk > summary {
  display: flex;
  gap: 1rem;
  padding: 0.5rem 0.65rem;
  color: var(--text-faint);
  cursor: pointer;
  font-size: 0.7rem;
}

.contrast-hunk > summary .mono {
  color: var(--accent-secondary);
}

.contrast-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.contrast-side {
  min-width: 0;
  border-right: 1px solid var(--border);
}

.contrast-side h3 {
  margin: 0;
  padding: 0.4rem 0.65rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.7rem;
}

.contrast-code {
  list-style: none;
  margin: 0;
  padding: 0.4rem 0;
  overflow: auto;
  font-size: 0.7rem;
}

.contrast-code li {
  min-width: max-content;
}

.contrast-line,
.contrast-context {
  display: grid;
  grid-template-columns: 3.3rem minmax(0, 1fr);
  width: 100%;
  min-height: 1.35rem;
  padding: 0 0.55rem 0 0;
  border: 0;
  background: transparent;
  color: var(--text-dim);
  font: inherit;
  text-align: left;
}

.contrast-line {
  cursor: pointer;
}

.contrast-line > span,
.contrast-context > span {
  padding-right: 0.65rem;
  color: var(--text-faint);
  text-align: right;
  user-select: none;
}

.contrast-line code,
.contrast-context code {
  white-space: pre;
}

.is-removed .contrast-line {
  background: color-mix(in srgb, var(--bad) 10%, transparent);
}

.is-added .contrast-line {
  background: color-mix(in srgb, var(--good) 10%, transparent);
}

.contrast-line.is-selected {
  box-shadow: inset 3px 0 var(--accent);
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  color: var(--text);
}

.review-consolidation-form {
  display: flex;
  max-width: 64rem;
  flex-direction: column;
  gap: 0.8rem;
}

.review-recognition-cue,
.review-optional-note {
  display: grid;
  gap: 0.2rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}

.review-recognition-cue > span,
.review-optional-note > span {
  font-size: 0.82rem;
  font-weight: 600;
}

.review-recognition-cue small,
.review-optional-note small {
  color: var(--text-dim);
  font-size: 0.75rem;
}

.review-recognition-cue input,
.review-optional-note textarea {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.6rem 0.7rem;
  font-size: var(--control-font-size);
  line-height: var(--control-line-height);
}

.review-optional-note textarea {
  resize: vertical;
}

.review-consolidation-form > .checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-dim);
  font-size: 0.78rem;
}

.review-task-note {
  display: flex;
  flex-direction: column;
  padding: 0.7rem 0.8rem;
  border-left: 2px solid var(--accent-secondary);
  background: var(--panel);
}

.review-task-note strong {
  font-size: 0.82rem;
}

.review-task-note span,
.review-save-row span {
  color: var(--text-dim);
  font-size: 0.75rem;
}

.review-save-row {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.review-feedback-body {
  display: grid;
  gap: 0.75rem;
}

.review-feedback-body .markdown-body {
  max-width: 62rem;
  padding: 0;
  border: 0;
  background: transparent;
  white-space: normal;
}

.markdown-body h2 {
  margin: 1.1rem 0 0.35rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}

.markdown-body h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.markdown-body p,
.markdown-body ul,
.markdown-body ol {
  margin: 0.35rem 0 0.75rem;
  color: var(--text-dim);
}

.markdown-body strong {
  color: var(--text);
}

.markdown-body code {
  padding: 0.08rem 0.25rem;
  border: 1px solid var(--border);
  border-radius: 0.2rem;
  background: var(--panel);
  color: var(--text);
}

.markdown-body > :last-child {
  margin-bottom: 0;
}

.review-inner-details {
  max-width: 100%;
  min-width: 0;
  border-top: 1px solid var(--border);
}

.review-inner-details[open] > summary {
  color: var(--text);
}

.review-hypotheses {
  border-top: 1px solid var(--border);
}

.review-hypothesis {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.85rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
}

.review-hypothesis-main,
.review-hypothesis-evidence {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.25rem;
}

.review-hypothesis-main strong {
  font-size: 0.82rem;
}

.review-hypothesis-main .mono,
.review-hypothesis-evidence {
  color: var(--text-faint);
  font-size: 0.7rem;
}

.review-hypothesis-evidence .pill {
  width: fit-content;
}

.review-hypothesis-evidence .revision {
  color: var(--text-dim);
}

.review-details {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.review-details > summary {
  padding: 0.75rem 0;
  color: var(--text-dim);
  font-weight: 600;
  cursor: pointer;
}

.review-details[open] > summary {
  color: var(--text);
}

.review-details-body {
  display: grid;
  gap: 1.25rem;
  padding: 0.25rem 0 1rem;
}

.review-details .coach-panel {
  border: 0;
}

.review-timeline .event,
.review-timeline .event-time,
.review-timeline .event-detail .mono {
  font-family: var(--font-sans);
}

.review-timeline .event-time {
  font-variant-numeric: tabular-nums;
}

/* Learner progress record */
.progress-record-page {
  display: grid;
  width: 100%;
  gap: 1.25rem;
}

.progress-page-heading {
  margin-bottom: 0;
}

.progress-focus {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 2rem;
  min-height: 9rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  border-color: color-mix(in srgb, var(--accent) 42%, var(--border));
  background:
    radial-gradient(
      circle at 100% 0,
      color-mix(in srgb, var(--accent) 10%, transparent),
      transparent 42%
    ),
    var(--panel);
}

.progress-focus-copy {
  min-width: 0;
}

.progress-focus-copy h2 {
  margin: 0.2rem 0 0.45rem;
  font-size: clamp(1.2rem, 2.5vw, 1.65rem);
  letter-spacing: -0.025em;
}

.progress-focus-copy p {
  max-width: 52rem;
  margin: 0;
  color: var(--text-dim);
  font-size: 0.86rem;
  line-height: 1.6;
}

.progress-focus-actions {
  display: grid;
  justify-items: end;
  gap: 0.7rem;
}

.progress-focus-status {
  max-width: 17rem;
  color: var(--text-dim);
  font-size: 0.7rem;
  line-height: 1.45;
  text-align: right;
}

.progress-course-record,
.progress-history-section {
  padding: clamp(1.1rem, 2.5vw, 1.5rem);
}

.progress-record-head,
.progress-foundation-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.progress-record-head h2,
.progress-foundation-head h3 {
  margin: 0.2rem 0 0;
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.progress-stage-list,
.progress-foundation-list {
  margin: 1rem 0 0;
  padding: 0;
  border-top: 1px solid var(--border);
  list-style: none;
}

.progress-stage {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.progress-stage-marker,
.progress-foundation-marker {
  display: grid;
  width: 1.7rem;
  height: 1.7rem;
  place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  color: var(--text-faint);
  font: 0.65rem var(--font-mono);
}

.progress-stage.is-current .progress-stage-marker {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--bg);
  box-shadow: 0 0 0 0.25rem color-mix(in srgb, var(--accent) 12%, transparent);
}

.progress-stage.is-ready .progress-stage-marker {
  border-color: var(--accent);
  color: var(--accent-secondary);
}

.progress-stage.is-complete .progress-stage-marker,
.progress-foundation-list .is-complete .progress-foundation-marker {
  border-color: color-mix(in srgb, var(--good) 65%, var(--border));
  color: var(--good);
}

.progress-foundation-list .is-review .progress-foundation-marker {
  border-color: color-mix(in srgb, var(--accent-gold) 65%, var(--border));
  color: var(--accent-gold);
}

.progress-foundation-list .is-current .progress-foundation-marker {
  border-color: var(--accent);
  color: var(--accent-secondary);
}

.progress-stage-copy {
  display: grid;
  min-width: 0;
  gap: 0.3rem;
}

.progress-stage-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.progress-stage-title h3 {
  margin: 0;
  font-size: 0.9rem;
}

.progress-stage-title span {
  color: var(--text-faint);
  font-size: 0.67rem;
}

.progress-stage.is-current .progress-stage-title span,
.progress-stage.is-ready .progress-stage-title span {
  color: var(--accent-secondary);
}

.progress-stage-copy p {
  max-width: 54rem;
  margin: 0;
  color: var(--text-dim);
  font-size: 0.72rem;
  line-height: 1.5;
}

.progress-stage.is-locked .progress-stage-copy,
.progress-stage.is-not_started .progress-stage-copy {
  opacity: 0.66;
}

.progress-stage-measure {
  display: grid;
  grid-template-columns: minmax(7rem, 18rem) auto;
  align-items: center;
  gap: 0.65rem;
  margin-top: 0.35rem;
}

.progress-stage-measure progress {
  width: 100%;
  height: 0.42rem;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  appearance: none;
  background: var(--muted-bar);
}

.progress-stage-measure progress::-webkit-progress-bar {
  border-radius: 999px;
  background: var(--muted-bar);
}

.progress-stage-measure progress::-webkit-progress-value {
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
}

.progress-stage-measure progress::-moz-progress-bar {
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
}

.progress-stage-measure span {
  color: var(--text-faint);
  font: 0.63rem var(--font-mono);
  white-space: nowrap;
}

.progress-stage-action,
.progress-foundation-list a {
  color: var(--text-dim);
  font-size: 0.7rem;
  white-space: nowrap;
}

.progress-foundation-record {
  margin-top: 1.3rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border-strong);
}

.progress-foundation-head > span {
  color: var(--text-dim);
  font-size: 0.7rem;
}

.progress-foundation-list li {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.8rem;
  min-height: 3.2rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--border);
}

.progress-foundation-list li:last-child {
  border-bottom: 0;
}

.progress-foundation-list li > div {
  display: flex;
  min-width: 0;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.progress-foundation-list strong {
  font-size: 0.78rem;
}

.progress-foundation-list li > div span {
  color: var(--text-faint);
  font-size: 0.66rem;
  white-space: nowrap;
}

.progress-foundation-list .is-current > div span {
  color: var(--accent-secondary);
}

.progress-foundation-list .is-review > div span {
  color: var(--accent-gold);
}

.progress-foundation-list .is-locked {
  color: var(--text-faint);
}

.history-section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
}

.history-section-head h2 {
  margin: 0;
  font-size: 0.95rem;
}

.history-case-list {
  margin-top: 0.9rem;
  border-bottom: 1px solid var(--border);
}

.history-case-row {
  display: grid;
  grid-template-columns: minmax(14rem, 1fr) auto;
  align-items: center;
  gap: 1rem;
  min-height: 3.8rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.history-case-row:last-child {
  border-bottom: 0;
}

.history-case-row:hover {
  text-decoration: none;
  background: color-mix(in srgb, var(--text) 4%, transparent);
}

.history-case-identity {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.history-case-identity span,
.history-case-outcome {
  color: var(--text-faint);
  font-size: 0.72rem;
}

.history-case-outcome {
  text-transform: capitalize;
}

.history-case-facts {
  display: flex;
  align-items: center;
  justify-content: end;
  gap: 1rem;
}

.history-case-facts .pill {
  width: fit-content;
}

.history-insights {
  padding: 0;
  overflow: hidden;
}

.history-insights > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  font-weight: 600;
}

.history-insights > summary > span:first-child {
  display: grid;
  gap: 0.15rem;
}

.history-insights > summary small {
  color: var(--text-faint);
  font-size: 0.68rem;
  font-weight: 400;
}

.history-insights-toggle {
  color: var(--text-dim);
  font-size: 0.7rem;
}

.history-insights[open] .history-insights-toggle {
  color: var(--accent-secondary);
}

.history-insights-body {
  display: grid;
  gap: 0;
  padding: 0 1.25rem;
  border-top: 1px solid var(--border);
}

.history-insight-block {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.history-insight-block:last-child {
  border-bottom: 0;
}

.history-insight-block > p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.82rem;
}

/* Longitudinal transfer map */

.transfer-map {
  border-top: 1px solid var(--border);
}

.transfer-map-row {
  display: grid;
  grid-template-columns: minmax(12rem, 0.65fr) 12rem minmax(18rem, 1.35fr);
  align-items: center;
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border);
}

.transfer-map-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem 0.65rem;
}

.transfer-map-summary h3 {
  width: 100%;
  margin: 0;
  font-size: 0.88rem;
}

.transfer-map-summary span {
  color: var(--text-faint);
  font-size: 0.67rem;
}

.transfer-band-counts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border);
}

.transfer-band-counts span {
  display: grid;
  place-items: center;
  padding: 0.35rem;
  border-right: 1px solid var(--border);
}

.transfer-band-counts span:last-child {
  border-right: 0;
}

.transfer-band-counts b {
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.6rem;
}

.transfer-band-counts em {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-style: normal;
}

.transfer-patterns {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.35rem;
}

.transfer-patterns a {
  overflow: hidden;
  color: var(--text-dim);
  font-size: 0.72rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.transfer-patterns a span {
  margin-right: 0.5rem;
  color: var(--accent-secondary);
  font-family: var(--font-mono);
  font-size: 0.62rem;
}

@media (max-width: 900px) {
  .review-model-compact,
  .contrast-columns,
  .review-hypothesis,
  .transfer-map-row {
    grid-template-columns: 1fr;
  }

  .review-model-compact > div,
  .review-model-compact > div:last-child {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .review-model-compact > div:last-child {
    border-bottom: 0;
  }

  .history-case-row {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0.3rem 0.75rem;
  }

  .progress-stage {
    grid-template-columns: 2rem minmax(0, 1fr);
  }

  .progress-stage-action {
    grid-column: 2;
    justify-self: start;
  }

  .contrast-side {
    border-bottom: 1px solid var(--border);
  }
}

@media (max-width: 680px) {
  .model-canvas,
  .causal-chain-editor,
  .recall-comparison-chain {
    grid-template-columns: 1fr;
  }

  .review-route {
    grid-template-columns: 1fr;
  }

  .review-route li {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .review-route li:last-child {
    border-bottom: 0;
  }

  .review-step > summary {
    grid-template-columns: 1.8rem minmax(0, 1fr);
    padding: 0.7rem 0.8rem;
  }

  .review-step-state {
    display: none;
  }

  .review-answer,
  .review-save-row,
  .recall-empty,
  .history-section-head,
  .history-insights > summary,
  .progress-record-head,
  .progress-foundation-head {
    align-items: stretch;
    flex-direction: column;
  }

  .progress-focus {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .progress-focus-actions {
    justify-items: stretch;
  }

  .progress-focus-status {
    max-width: none;
    text-align: left;
  }

  .progress-focus-actions .btn {
    width: 100%;
  }

  .progress-stage-title,
  .progress-foundation-list li > div {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.15rem;
  }

  .progress-stage-measure {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .history-case-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .history-case-facts {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .review-answer .btn,
  .recall-empty .btn {
    width: 100%;
  }

  .outcome-segments {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .outcome-segments label:nth-child(2) {
    border-right: 0;
  }

  .outcome-segments label:nth-child(-n + 2) {
    border-bottom: 1px solid var(--border-strong);
  }

  .hypothesis-row {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .hypothesis-actions {
    grid-column: 1 / -1;
  }

}

/* ---------------------------------------------------------------------- */
/* Guided learner flow and quieter administration                         */
/* ---------------------------------------------------------------------- */

.topnav {
  gap: 1.25rem;
  margin-left: auto;
}

.topbar-account {
  margin-left: 0;
}

.topnav a {
  padding: 0;
  border-radius: 0;
}

.topnav a:hover,
.topnav a[aria-current="page"] {
  background: transparent;
}

.simple-page-heading {
  align-items: center;
  width: 100%;
  max-width: none;
  margin-bottom: 0.25rem;
}

.simple-page-heading h1 {
  margin: 0.15rem 0 0.25rem;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  letter-spacing: -0.035em;
}

.simple-page-heading p {
  max-width: 48rem;
  line-height: 1.65;
}

.today-heading {
  align-items: flex-start;
  width: 100%;
  max-width: none;
}

.today-heading h1 {
  margin-top: 0.15rem;
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.04em;
}

.today-heading p {
  max-width: 52rem;
  margin-top: 0.35rem;
  color: var(--text-dim);
  font-size: 0.96rem;
}

.training-map {
  padding: clamp(1.1rem, 2.5vw, 1.5rem);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
}

.training-map-head,
.training-destination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.training-map-head h2 {
  margin: 0.2rem 0 0;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
}

.training-map-position {
  padding: 0.4rem 0.65rem;
  border: 1px solid color-mix(in srgb, var(--accent) 38%, var(--border));
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 8%, var(--panel-inset));
  color: var(--text);
  font-size: 0.7rem;
}

.training-timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  row-gap: 1.4rem;
  margin: 1.35rem 0 0;
  padding: 0;
  list-style: none;
}

.training-timeline li {
  position: relative;
  display: grid;
  justify-items: center;
  gap: 0.55rem;
  min-width: 0;
  color: var(--text-faint);
  text-align: center;
}

.training-timeline li::before,
.training-timeline li::after {
  position: absolute;
  z-index: 0;
  top: 0.78rem;
  right: 50%;
  left: -50%;
  height: 3px;
  content: "";
}

.training-timeline li::before {
  background: var(--border-strong);
}

.training-timeline li::after {
  background: var(--good);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 220ms ease;
}

.training-timeline li:first-child::before,
.training-timeline li:first-child::after {
  display: none;
}

.training-timeline li:nth-child(4n + 1):not(:first-child)::before,
.training-timeline li:nth-child(4n + 1):not(:first-child)::after {
  display: none;
}

.training-timeline li.is-complete::after,
.training-timeline li.is-current::after {
  transform: scaleX(1);
}

.timeline-marker {
  position: relative;
  z-index: 1;
  display: grid;
  width: 1.6rem;
  height: 1.6rem;
  place-items: center;
  border: 2px solid var(--border-strong);
  border-radius: 50%;
  background: var(--panel);
  color: var(--text-faint);
  font: 0.67rem var(--font-mono);
}

.training-timeline li.is-complete,
.training-timeline li.is-current {
  color: var(--text);
}

.training-timeline li.is-complete .timeline-marker {
  border-color: color-mix(in srgb, var(--good) 68%, var(--border));
  color: var(--good);
}

.training-timeline li.is-current .timeline-marker {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--bg);
  box-shadow: 0 0 0 0.3rem color-mix(in srgb, var(--accent) 13%, transparent);
}

.training-timeline strong {
  max-width: 10.5rem;
  font-size: 0.72rem;
  line-height: 1.35;
}

.training-timeline li > div {
  display: grid;
  justify-items: center;
  gap: 0.25rem;
}

.training-timeline small {
  max-width: 14rem;
  color: var(--text-dim);
  font-size: 0.64rem;
  line-height: 1.45;
}

.training-timeline .timeline-capacity {
  max-width: 14rem;
  color: var(--accent-gold);
  font-size: 0.61rem;
  line-height: 1.4;
}

.training-timeline li:not(.is-complete, .is-current) small {
  color: var(--text-faint);
}

.timeline-step-status {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  .training-timeline li::after {
    transition: none;
  }
}

.training-destination {
  margin-top: 1.15rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}

.training-destination span {
  color: var(--text-faint);
  font: 0.64rem var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.training-destination strong {
  flex: 1;
  font-size: 0.76rem;
}

.training-destination a {
  font-size: 0.7rem;
}

.today-task {
  min-height: 12rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  border-color: color-mix(in srgb, var(--accent) 38%, var(--border));
  background: radial-gradient(circle at 100% 0, color-mix(in srgb, var(--accent) 9%, transparent), transparent 38%), var(--panel);
}

.today-task .home-next-copy h2 {
  max-width: 46rem;
  margin-top: 0.35rem;
  font-size: clamp(1.25rem, 3vw, 1.65rem);
}

.today-task .home-next-copy > p {
  max-width: 48rem;
  margin-top: 0.4rem;
}

.task-why {
  display: block;
  max-width: 50rem;
  margin-top: 0.8rem;
  color: var(--text-faint);
  line-height: 1.55;
}

.task-why strong {
  color: var(--text-dim);
}

.today-task.is-component-choice {
  grid-template-columns: minmax(17rem, 0.65fr) minmax(28rem, 1.35fr);
  align-items: start;
}

.component-quick-pick {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
  width: 100%;
}

.component-quick-pick form {
  margin: 0;
}

.component-quick-pick button {
  display: grid;
  gap: 0.15rem;
  width: 100%;
  min-height: 4.3rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel-inset);
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.component-quick-pick button:hover,
.component-quick-pick button:focus-visible {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--panel-inset));
}

.component-quick-pick button strong {
  font-size: 0.78rem;
}

.component-quick-pick button em {
  margin-left: 0.5rem;
  color: var(--good);
  font: normal 0.58rem var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.component-quick-pick button span {
  display: -webkit-box;
  overflow: hidden;
  color: var(--text-dim);
  font-size: 0.64rem;
  line-height: 1.4;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.session-guide {
  display: grid;
  grid-template-columns: minmax(12rem, 0.65fr) minmax(0, 1.35fr);
  gap: 1.5rem;
  padding: 1.2rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.session-guide h2 {
  margin: 0.2rem 0;
  font-size: 1.05rem;
}

.session-guide p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.8rem;
}

.session-guide ol {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.session-guide li {
  display: grid;
  align-content: start;
  gap: 0.25rem;
  padding: 0 0.85rem;
  border-left: 1px solid var(--border);
}

.session-guide li strong {
  color: var(--accent-secondary);
  font-size: 0.75rem;
}

.session-guide li span {
  color: var(--text-dim);
  font-size: 0.68rem;
  line-height: 1.5;
}

.path-admin-control {
  padding: 0;
  overflow: hidden;
}

.path-admin-control > summary {
  padding: 1rem 1.2rem;
}

.path-admin-control > summary > span {
  display: inline-grid;
  gap: 0.1rem;
}

.path-admin-control summary small {
  color: var(--text-faint);
  font-size: 0.66rem;
}

.path-admin-control[open] > summary {
  border-bottom: 1px solid var(--border);
}

.section-title-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.section-title-line h2 {
  margin: 0.2rem 0;
}

.section-title-line > span,
.section-title-line a {
  color: var(--text-dim);
  font-size: 0.7rem;
}

.admin-learner-progress,
.admin-compute {
  margin-bottom: 1rem;
}

.admin-learner-list {
  display: grid;
  margin-top: 0.8rem;
}

.admin-learner-row {
  display: grid;
  gap: 0.75rem;
  padding: 1rem 0;
  border-top: 1px solid var(--border);
}

.admin-learner-identity,
.admin-learner-position {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.admin-learner-identity > div,
.admin-learner-position > div {
  display: grid;
  min-width: 0;
}

.admin-learner-identity > .pill {
  margin-left: auto;
}

.admin-learner-identity span,
.admin-learner-position span,
.admin-learner-evidence span,
.admin-learner-evidence small {
  font-size: var(--type-label);
}

.admin-learner-position {
  justify-content: space-between;
}

.admin-learner-position > span {
  flex: 0 0 auto;
  font-family: var(--font-mono);
}

.admin-learner-meter {
  height: 0.35rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--muted-bar);
}

.admin-learner-meter i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
}

.admin-learner-evidence {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
}

.admin-learner-evidence > div {
  display: grid;
  gap: 0.1rem;
  padding-left: 0.7rem;
  border-left: 1px solid var(--border);
}

.admin-empty-state {
  display: grid;
  gap: 0.2rem;
  padding: 1rem 0 0.2rem;
}

.admin-log-status {
  margin: 0.8rem 0 0;
  font-size: var(--type-small);
}

.admin-log-list {
  display: grid;
  max-height: 28rem;
  margin: 0.8rem 0 0;
  padding: 0;
  overflow: auto;
  border-top: 1px solid var(--border);
  list-style: none;
}

.admin-log-list li {
  display: grid;
  grid-template-columns: 7rem 6rem minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--border);
  font-size: var(--type-label);
}

.admin-log-list time,
.admin-log-list span {
  font-family: var(--font-mono);
}

.admin-log-list code {
  overflow-wrap: anywhere;
  color: var(--text);
  font: inherit;
}

.admin-section-head p,
.admin-access > .admin-section-head p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.72rem;
}

.account-notice,
.account-mail-limit {
  margin: 0.75rem 0 0;
  padding: 0.65rem 0.75rem;
  border: 1px solid color-mix(in srgb, var(--good) 45%, var(--border));
  border-radius: 0.4rem;
  color: var(--text);
  font-size: var(--type-small);
}

.account-mail-limit {
  border-color: color-mix(in srgb, var(--accent-gold) 45%, var(--border));
}

.account-delete {
  border-color: color-mix(in srgb, var(--bad) 45%, var(--border));
  color: var(--bad);
}

.admin-password-visible h2,
.admin-jobs-visible h2 {
  margin: 0.2rem 0;
}

.admin-password-visible .password-form {
  margin-top: 0.9rem;
}

.auth-form input,
.auth-form select {
  width: 100%;
  min-height: 2.8rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border-strong);
  border-radius: 0.4rem;
  outline: 0;
  background: var(--panel-inset);
  color: var(--text);
  font: var(--control-font-size)/var(--control-line-height) var(--font-sans);
}

.auth-form input:focus,
.auth-form select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent);
}

body.auth-shell {
  min-height: 100vh;
  background:
    radial-gradient(circle at 50% -15%, color-mix(in srgb, var(--accent) 15%, transparent), transparent 34rem),
    radial-gradient(circle at 100% 100%, color-mix(in srgb, var(--accent-secondary) 6%, transparent), transparent 28rem),
    var(--bg);
}

.auth-shell .topbar {
  position: fixed;
  inset: 0 0 auto;
  border: 0;
  background: transparent;
  backdrop-filter: none;
}

.auth-shell .topbar-inner {
  justify-content: flex-end;
  max-width: none;
  min-height: 0;
  padding: 1rem;
}

.auth-shell .brand,
.auth-shell .topnav,
.auth-shell .topbar-account {
  display: none;
}

.auth-shell .shell {
  display: grid;
  min-height: 100vh;
  max-width: none;
  padding: clamp(1rem, 4vw, 2.5rem);
  place-items: center;
}

.auth-page.auth-page-simple {
  position: relative;
  display: block;
  width: min(31rem, 100%);
  min-height: 0;
  margin: 0 auto;
  overflow: hidden;
  border-color: color-mix(in srgb, var(--accent) 24%, var(--border));
  border-radius: 0.75rem;
  background: linear-gradient(155deg, color-mix(in srgb, var(--panel-bright) 45%, var(--panel)), var(--panel) 45%);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--text) 4%, transparent), 0 0 3rem color-mix(in srgb, var(--accent) 7%, transparent);
}

.auth-page.auth-page-simple::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent-secondary) 68%, var(--accent)));
  content: "";
}

.auth-page-simple .auth-card {
  display: block;
  min-height: 0;
  padding: clamp(1.5rem, 6vw, 2.75rem);
}

.auth-product {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 2.25rem;
  padding-bottom: 1.15rem;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
}

.auth-product-mark {
  display: grid;
  width: 2.65rem;
  height: 2.65rem;
  border: 1px solid color-mix(in srgb, var(--accent) 38%, var(--border));
  border-radius: 0.55rem;
  background: color-mix(in srgb, var(--accent) 8%, var(--panel-inset));
  place-items: center;
}

.auth-product img {
  width: 1.35rem;
  height: 1.7rem;
}

.auth-product div {
  display: grid;
  line-height: 1.25;
}

.auth-product strong {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.auth-product span {
  font-size: 0.72rem;
}

.auth-page-simple .auth-card-heading h1 {
  margin: 0;
  font-size: clamp(1.85rem, 6vw, 2.15rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.auth-page-simple .auth-card-heading p {
  margin: 0.5rem 0 0;
  line-height: 1.55;
}

.auth-page-simple .auth-login-form {
  gap: 1.1rem;
  margin-top: 1.75rem;
}

.auth-page-simple .auth-login-form > label {
  gap: 0.45rem;
  font-size: 0.76rem;
}

.auth-page-simple .auth-control {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  min-height: 0;
  padding: 0;
  border: 0;
  background: transparent;
}

.auth-page-simple .auth-control:focus-within {
  border: 0;
  box-shadow: none;
}

.auth-page-simple .auth-control input {
  min-height: 3.15rem;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--border-strong);
  border-radius: 0.5rem;
  background: var(--panel-inset);
  transition: border-color 140ms ease, box-shadow 140ms ease, background 140ms ease;
}

.auth-page-simple .auth-control input:focus {
  border: 1px solid var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent);
}

.auth-page-simple .auth-password-control {
  grid-template-columns: minmax(0, 1fr) auto;
  border: 1px solid var(--border-strong);
  border-radius: 0.5rem;
  background: var(--panel-inset);
  transition: border-color 140ms ease, box-shadow 140ms ease, background 140ms ease;
}

.auth-page-simple .auth-password-control:focus-within {
  border: 1px solid var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent);
}

.auth-page-simple .auth-password-control input,
.auth-page-simple .auth-password-control input:focus {
  border: 0;
  box-shadow: none;
}

.auth-page-simple .password-toggle {
  align-self: stretch;
  padding: 0 0.95rem;
}

.auth-page-simple .auth-submit {
  min-height: 3.15rem;
  margin-top: 0.25rem;
  border-radius: 0.5rem;
  box-shadow: 0 0.7rem 1.8rem color-mix(in srgb, var(--accent) 17%, transparent);
  transition: background 140ms ease, border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.auth-page-simple .auth-submit:hover {
  box-shadow: 0 0.9rem 2.2rem color-mix(in srgb, var(--accent) 26%, transparent);
  transform: translateY(-1px);
}

.auth-page-simple .auth-alt-action {
  margin: 1.1rem 0 0;
}

.auth-page-simple .auth-alt-action a {
  color: var(--accent-secondary);
}

@media (prefers-reduced-motion: reduce) {
  .auth-page-simple .auth-submit {
    transition: none;
  }

  .auth-page-simple .auth-submit:hover {
    transform: none;
  }
}

.direct-component-choice {
  display: grid;
  grid-template-columns: minmax(15rem, 0.5fr) minmax(0, 1.5fr);
  gap: 1.5rem;
  align-items: start;
}

.direct-component-choice h2 {
  margin: 0.25rem 0;
}

.direct-component-choice p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.76rem;
}

.campaign-heading-actions {
  display: flex;
  gap: 1rem;
  white-space: nowrap;
}

.campaign-heading-actions a {
  color: var(--text-dim);
  font: 0.7rem var(--font-mono);
}

.campaign-heading-actions a::before {
  content: "/";
  color: var(--accent);
}

.campaign-heading-actions a:hover {
  color: var(--text);
}

.learning-path-main {
  width: 100%;
  max-width: 70rem;
  margin: 0;
}

.learning-path-heading {
  width: 100%;
  max-width: 70rem;
  margin-right: auto;
  margin-left: 0;
}

.learning-path-heading p,
.learning-path-main .campaign-control p,
.learning-path-main .form-note,
.learning-path-main .gate-explanation,
.learning-path-main .checkpoint-history article p,
.learning-path-main .path-admin-visible p {
  color: var(--text-dim);
  font-size: var(--type-copy);
  line-height: var(--copy-line-height);
}

.learning-path-main .checkpoint-form label,
.learning-path-main .section-title-line > span,
.learning-path-main .section-title-line a,
.campaign-heading-actions a,
.current-focus-label {
  font-size: var(--type-label);
}

.learning-path-main .gate-criteria strong,
.learning-path-main .prerequisite-list strong {
  font-size: var(--type-small);
}

.learning-path-main .prerequisite-list small,
.learning-path-main .checkpoint-history article small {
  color: var(--text-dim);
  font-size: var(--type-meta);
  line-height: 1.45;
}

.learning-path-main .section-title-line a {
  color: var(--accent-secondary);
}

.learning-path-main .gate-criteria > div {
  background: var(--panel-inset);
}

.learning-path-main .gate-criteria > div.is-passed > span {
  color: var(--good);
}

.learning-position {
  border-color: color-mix(in srgb, var(--accent) 38%, var(--border));
}

.current-focus-label {
  color: var(--accent-strong);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.gate-explanation {
  color: var(--text-faint);
  font-size: 0.72rem;
}

.path-prerequisites {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.checkpoint-entry-visible {
  margin-top: 1rem;
}

.checkpoint-entry-visible h3 {
  margin: 0;
  color: var(--text);
}

.checkpoint-history-visible {
  margin: 0;
  padding: var(--panel-padding);
  border: 1px solid var(--border);
}

.checkpoint-history-visible > div:last-child {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.8rem;
}

.campaign-lesson {
  padding: var(--panel-padding);
}

.campaign-lesson > header,
.campaign-lesson > .lesson-lead,
.campaign-lesson > .lesson-paragraphs {
  max-width: 62rem;
}

.campaign-lesson > header h2 {
  margin: 0.22rem 0 0;
}

.campaign-lesson p,
.campaign-lesson li,
.campaign-lesson dd {
  font-size: var(--type-copy);
  line-height: var(--copy-line-height);
}

.lesson-lead {
  margin: 0.85rem 0 0;
  color: var(--text);
}

.lesson-paragraphs {
  margin-top: 1.1rem;
}

.lesson-paragraphs p {
  margin: 0 0 0.85rem;
  color: var(--text-dim);
}

.worked-source-trace,
.scaffolded-source-trace {
  max-width: 62rem;
  margin-top: 1.25rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border);
}

.worked-source-trace h3,
.scaffolded-source-trace h3 {
  margin: 0.2rem 0 0;
}

.worked-source-trace > p,
.scaffolded-source-trace > p {
  margin: 0.8rem 0 0;
  color: var(--text);
}

.worked-source-trace ol,
.scaffolded-source-trace ol {
  display: grid;
  gap: 0.75rem;
  margin: 1rem 0;
  padding: 0;
  list-style: none;
}

.worked-source-trace li,
.scaffolded-source-trace li {
  padding: 0.9rem 1rem;
  border-left: 2px solid var(--accent-secondary);
  background: var(--panel-inset);
}

.worked-source-trace li > div {
  display: grid;
  gap: 0.25rem;
}

.worked-source-trace code {
  overflow-wrap: anywhere;
  color: var(--accent-secondary);
  font-size: var(--type-meta);
}

.worked-source-trace li p,
.scaffolded-source-trace li p {
  margin: 0.45rem 0 0;
  color: var(--text);
}

.trace-diagnostic {
  font-weight: 650;
}

.component-causal-model {
  display: flex;
  gap: 1.65rem;
  margin: 1.1rem 0 1.4rem;
  padding: 0;
  list-style: none;
}

.component-causal-model li {
  position: relative;
  display: grid;
  grid-template-columns: 1.7rem minmax(0, 1fr);
  flex: 1 1 0;
  gap: 0.65rem;
  min-width: 0;
  padding-top: 0.85rem;
  border-top: 2px solid var(--border-strong);
}

.component-causal-model li:not(:last-child)::after {
  position: absolute;
  top: 0.4rem;
  right: -1.25rem;
  color: var(--accent-secondary);
  content: "→";
  font: 700 1rem/1 var(--font-mono);
}

.component-causal-model li > span {
  display: grid;
  place-items: center;
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 50%;
  background: var(--accent-secondary);
  color: var(--page-bg);
  font: 700 var(--type-meta) var(--font-mono);
}

.component-causal-model h3,
.component-causal-model p {
  margin: 0;
  overflow-wrap: anywhere;
}

.component-causal-model p {
  margin-top: 0.5rem;
}

.component-state-figure {
  margin: 1.5rem 0;
  padding: 1rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.component-state-figure figcaption h3,
.component-state-figure figcaption + .component-state-model,
.component-state-figure > p {
  margin: 0;
}

.component-state-figure figcaption h3 {
  margin-top: 0.25rem;
}

.component-state-model {
  display: grid;
  gap: 0;
  padding: 0;
  list-style: none;
  margin-top: 1rem;
}

.component-state-model > li {
  min-width: 0;
}

.component-state-model article {
  display: grid;
  grid-template-columns: 2rem minmax(8rem, 0.6fr) minmax(0, 2fr);
  align-items: start;
  gap: 1rem;
  min-width: 0;
  padding: 0.8rem;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--panel);
}

.component-state-model article strong,
.component-state-model article p,
.component-state-figure > p {
  overflow-wrap: anywhere;
}

.component-state-model article p {
  margin: 0;
}

.component-state-number {
  display: grid;
  place-items: center;
  width: 1.8rem;
  height: 1.8rem;
  border: 1px solid var(--accent-secondary);
  border-radius: 50%;
  color: var(--accent-secondary);
  font: 500 0.8rem/1 var(--font-mono);
}

.component-state-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-left: 1.65rem;
  padding: 0.6rem 0;
  min-width: 0;
  color: var(--text);
  text-align: left;
}

.component-state-link span {
  overflow-wrap: anywhere;
  font-size: var(--type-meta);
}

.component-state-link b {
  order: -1;
  transform: rotate(90deg);
  color: var(--accent-secondary);
  font: 700 1.1rem/1 var(--font-mono);
}

@media (max-width: 680px) {
  .component-state-model article {
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.5rem;
  }

  .component-state-model article p {
    grid-column: 2;
  }
}

.component-state-figure > p {
  margin-top: 1rem;
}

.worked-source-trace li .trace-diagnostic,
.scaffolded-source-trace small {
  color: var(--text);
}

.tooling-bootcamp {
  margin-bottom: 1rem;
  padding: var(--panel-padding);
}

.tooling-bootcamp > header h2,
.tooling-bootcamp > header p {
  margin: 0.25rem 0 0;
}

.tooling-lab-lesson,
.tooling-build-lesson {
  margin: 1rem 0;
  padding: 1rem;
  background: var(--panel-inset);
}

.tooling-lab-lesson h3,
.tooling-lab-lesson p,
.tooling-build-lesson h3,
.tooling-build-lesson p {
  margin: 0;
}

.tooling-lab-lesson p,
.tooling-build-lesson p {
  margin-top: 0.6rem;
}

.tooling-lab-lesson pre,
.tooling-build-lesson pre {
  margin: 0.75rem 0;
  padding: 0.8rem;
  overflow-x: auto;
  background: var(--code-bg);
}

.focused-lab-evidence-grid {
  grid-template-columns: 1fr;
}

.tooling-lessons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 1rem;
}

.tooling-lessons article {
  min-width: 0;
  padding: 1rem;
  background: var(--panel-inset);
}

.tooling-lessons article:last-child {
  grid-column: 1 / -1;
}

.tooling-lessons h3,
.tooling-lessons p {
  margin: 0;
}

.tooling-lessons p {
  margin-top: 0.55rem;
  color: var(--text);
  line-height: var(--copy-line-height);
}

.tooling-lessons pre {
  margin: 0.75rem 0 0;
  padding: 0.8rem;
  overflow-x: auto;
  background: var(--code-bg);
}

.numbered-lessons p {
  display: grid;
  grid-template-columns: 1.7rem minmax(0, 1fr);
  gap: 0.65rem;
  align-items: start;
}

.numbered-lessons p > span {
  display: grid;
  place-items: center;
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 50%;
  background: var(--panel-inset);
  color: var(--accent-strong);
  font: var(--type-meta) var(--font-mono);
}

.landmark-lessons,
.flow-lessons,
.invariant-lessons,
.probe-lessons {
  display: grid;
  gap: 0.8rem;
  margin-top: 1.2rem;
}

.landmark-lessons {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.landmark-lessons article,
.flow-lessons article,
.invariant-lessons article,
.probe-lessons article,
.mechanism-lessons article {
  padding: 1rem;
  border-radius: var(--radius);
  background: var(--panel-inset);
}

.landmark-lessons h3,
.flow-lessons h3,
.invariant-lessons h3,
.probe-lessons h3,
.probe-lessons h4,
.mechanism-lessons h3 {
  margin: 0;
}

.landmark-lessons h3 {
  overflow-wrap: anywhere;
  color: var(--accent-secondary);
  font-size: var(--type-small);
}

.landmark-lessons p,
.flow-lessons p,
.invariant-lessons p,
.probe-lessons p,
.mechanism-lessons p {
  margin: 0.48rem 0 0;
  color: var(--text-dim);
}

.landmark-lessons p:last-child,
.lesson-challenge {
  color: var(--text-faint);
}

.flow-lessons article {
  max-width: 62rem;
}

.flow-lessons ol {
  margin: 0.8rem 0 0;
  padding-left: 1.35rem;
  color: var(--text-dim);
}

.flow-lessons li {
  margin: 0.35rem 0;
}

.invariant-lessons {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.invariant-lessons dl {
  margin: 0.9rem 0 0;
}

.invariant-lessons dl > div {
  margin-top: 0.62rem;
}

.invariant-lessons dt {
  color: var(--text);
  font: var(--type-meta) var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.invariant-lessons dd {
  margin: 0.16rem 0 0;
  color: var(--text-dim);
}

.probe-lessons,
.mechanism-lessons {
  max-width: 62rem;
}

.probe-lessons > h3,
.mechanism-lessons > h3 {
  margin: 0.5rem 0 0.1rem;
}

.probe-lessons h4 {
  font-size: var(--type-small);
}

.mechanism-lessons {
  display: grid;
  gap: 0.6rem;
  margin-top: 1.2rem;
}

.mechanism-lessons article strong {
  color: var(--text);
  font-size: var(--type-small);
  text-transform: capitalize;
}

.path-admin-visible {
  padding: var(--panel-padding);
  overflow: visible;
}

.path-admin-visible {
  display: grid;
  grid-template-columns: minmax(15rem, 0.4fr) minmax(0, 1fr);
  align-items: end;
  gap: 1.5rem;
}

.path-admin-visible h2 {
  margin: 0.2rem 0;
}

.path-admin-visible p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.72rem;
}

.path-admin-visible .stage-form {
  padding: 0;
}

.path-action {
  margin-top: 0.5rem;
}

.path-admin-control .stage-form {
  padding: 1rem;
}

@media (max-width: 1000px) {

.session-guide,
  .direct-component-choice,
  .path-admin-visible {
    grid-template-columns: 1fr;
  }

  .landmark-lessons,
  .invariant-lessons,
  .tooling-lessons {
    grid-template-columns: 1fr;
  }

  .component-causal-model,
  .component-state-model {
    flex-direction: column;
  }

  .component-causal-model li:not(:last-child)::after {
    top: auto;
    right: auto;
    bottom: -1.3rem;
    left: 0.65rem;
    content: "↓";
  }

  .component-state-link {
    flex-basis: auto;
    min-height: 2.5rem;
  }

  .component-state-link b {
    transform: rotate(90deg);
  }

  .tooling-lessons article:last-child {
    grid-column: auto;
  }

  .today-task.is-component-choice {
    grid-template-columns: 1fr;
  }

  .admin-learner-evidence {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
.session-guide ol {
    grid-template-columns: 1fr;
  }

  .session-guide li {
    padding: 0.55rem 0;
    border-bottom: 1px solid var(--border);
    border-left: 0;
  }

  .session-guide li:last-child {
    border-bottom: 0;
  }

  .admin-section-head {
    align-items: stretch;
    grid-template-columns: 1fr;
    flex-direction: column;
  }

  .admin-learner-evidence {
    grid-template-columns: 1fr;
  }

  .admin-log-list li {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .admin-log-list code {
    grid-column: 1 / -1;
  }

  .training-map-head,
  .training-destination {
    align-items: flex-start;
    flex-direction: column;
  }

  .training-timeline {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .training-timeline li {
    grid-template-columns: 1.6rem minmax(0, 1fr);
    justify-items: start;
    align-items: center;
    gap: 0.7rem;
    min-height: 3.1rem;
    text-align: left;
  }

  .training-timeline li::before,
  .training-timeline li::after {
    top: -50%;
    right: auto;
    bottom: 50%;
    left: 0.76rem;
    width: 2px;
    height: auto;
  }

  .training-timeline li::after {
    transform: scaleY(0);
    transform-origin: center top;
  }

  .training-timeline li.is-complete::after,
  .training-timeline li.is-current::after {
    transform: scaleY(1);
  }

  .training-timeline li:nth-child(4n + 1):not(:first-child)::before,
  .training-timeline li:nth-child(4n + 1):not(:first-child)::after {
    display: block;
  }

  .training-timeline strong {
    max-width: none;
  }

  .training-timeline li > div {
    justify-items: start;
  }

  .training-timeline small {
    max-width: 34rem;
  }

}

@media (max-width: 640px) {
  .topbar-inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .brand {
    grid-column: 1;
    grid-row: 1;
  }

  .topbar-account {
    grid-column: 2;
    grid-row: 1;
  }

  .topnav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
    margin-left: 0;
  }

  .component-quick-pick {
    grid-template-columns: 1fr;
  }

  .auth-page.auth-page-simple {
    margin: 1rem auto;
    border-radius: 0.55rem;
  }

  .auth-page-simple .auth-card {
    min-height: 0;
  }

}

/* A replayed lab result must never be mistaken for a live run: learners are
   being taught to distrust unlabelled evidence. */
.lab-replay-pill {
  background: color-mix(in srgb, var(--text) 6%, transparent);
  border: 1px solid currentColor;
  opacity: 0.85;
  margin-left: 0.35rem;
}

/* Service health is arranged around decisions: what needs action, which
   account is affected, and the evidence needed to diagnose it. */
.ops-overview {
  display: grid;
  grid-template-columns: minmax(15rem, 0.65fr) minmax(0, 1.35fr);
  gap: 1.5rem;
  align-items: center;
  border-color: color-mix(in srgb, var(--good) 44%, var(--border));
}

.ops-overview.has-actions {
  border-color: color-mix(in srgb, var(--accent-gold) 55%, var(--border));
}

.ops-overview-heading h2,
.ops-overview-heading p,
.ops-action p,
.ops-runtime-grid p,
.ops-trend-heading p {
  margin: 0;
}

.ops-overview-heading h2 {
  margin-top: 0.15rem;
  font-size: 1.5rem;
}

.ops-overview-heading p {
  margin-top: 0.35rem;
  line-height: var(--copy-line-height);
}

.ops-action-list {
  display: grid;
  gap: 0.55rem;
}

.ops-action {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.7rem;
  align-items: start;
  padding: 0.65rem 0.75rem;
  background: var(--panel-inset);
}

.ops-action > span {
  width: 0.55rem;
  height: 0.55rem;
  margin-top: 0.4rem;
  border-radius: 50%;
  background: var(--accent-gold);
}

.ops-action-bad > span,
.ops-action-critical > span {
  background: var(--bad);
}

.ops-action p {
  margin-top: 0.15rem;
  font-size: var(--type-label);
}

.ops-clear-mark {
  display: grid;
  width: 3rem;
  height: 3rem;
  margin-left: auto;
  border: 1px solid color-mix(in srgb, var(--good) 58%, var(--border));
  border-radius: 50%;
  color: var(--good);
  font-size: 1.35rem;
  place-items: center;
}

.ops-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
}

.ops-stat {
  display: grid;
  gap: 0.3rem;
  align-content: start;
  min-width: 0;
  padding: 0.95rem 1rem;
  border: 1px solid var(--border);
  background: var(--panel);
}

.ops-stat span,
.ops-runtime-grid article > span {
  font-size: var(--type-label);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.ops-stat strong {
  font-size: 1.75rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.ops-stat small {
  font-size: var(--type-label);
}

.ops-stat-good strong {
  color: var(--good);
}

.ops-stat-bad strong,
.ops-stat-critical strong {
  color: var(--bad);
}

.ops-stat-warning strong {
  color: var(--accent-gold);
}

.ops-meter {
  height: 4px;
  margin-top: 0.4rem;
  background: color-mix(in srgb, var(--border) 70%, transparent);
}

.ops-meter i {
  display: block;
  height: 100%;
  background: var(--accent-gold);
}

.ops-stat-critical .ops-meter i {
  background: var(--bad);
}

.ops-access-grid {
  display: grid;
  grid-template-columns: minmax(18rem, 0.85fr) minmax(24rem, 1.15fr);
  gap: 1.5rem;
  margin-top: 1.1rem;
}

.ops-access-section {
  min-width: 0;
}

.ops-section-heading,
.ops-trend-heading {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
}

.ops-section-heading h3 {
  margin: 0;
}

.ops-section-heading span,
.ops-trend-heading p {
  font-size: var(--type-label);
}

.ops-account-list,
.ops-login-list {
  display: grid;
  margin-top: 0.55rem;
  border-top: 1px solid var(--border);
}

.ops-account-row {
  display: grid;
  grid-template-columns: minmax(9rem, 1fr) auto;
  gap: 0.55rem 1rem;
  align-items: center;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
}

.ops-person {
  display: flex;
  gap: 0.65rem;
  align-items: center;
}

.ops-person > div,
.ops-login-row > div,
.ops-account-state,
.ops-account-meta {
  display: grid;
  min-width: 0;
}

.ops-person span,
.ops-login-row div span,
.ops-account-state small,
.ops-account-meta {
  font-size: var(--type-label);
}

.ops-account-state {
  justify-items: end;
}

.ops-account-meta {
  grid-column: 1 / -1;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  padding-left: 2.45rem;
}

.ops-login-row {
  display: grid;
  grid-template-columns: minmax(8rem, 1fr) auto minmax(7rem, auto) minmax(8.5rem, auto);
  gap: 0.7rem;
  align-items: center;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
  font-size: var(--type-label);
}

.ops-login-row code,
.ops-login-row time {
  font-size: var(--type-meta);
  white-space: nowrap;
}

.ops-mail-audit {
  margin-top: 1.35rem;
}

.ops-mail-event-list {
  display: grid;
  margin-top: 0.55rem;
  border-top: 1px solid var(--border);
}

.ops-mail-event-row {
  display: grid;
  grid-template-columns: minmax(10rem, 1fr) auto minmax(8.5rem, auto);
  gap: 0.7rem;
  align-items: center;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
  font-size: var(--type-label);
}

.ops-mail-event-row > div {
  display: grid;
  min-width: 0;
}

.ops-mail-event-row time {
  font-size: var(--type-meta);
  white-space: nowrap;
}

.pill-bad {
  border-color: color-mix(in srgb, var(--bad) 58%, var(--border));
  background: color-mix(in srgb, var(--bad) 7%, transparent);
  color: var(--bad);
}

.pill-warning {
  border-color: color-mix(in srgb, var(--warning) 42%, var(--border));
  background: color-mix(in srgb, var(--warning) 10%, transparent);
  color: var(--warning);
}

.ops-trend-heading {
  justify-content: flex-start;
  margin-top: 1.4rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border);
}

.ops-chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
  margin-top: 0.75rem;
}

.ops-chart {
  display: grid;
  gap: 0.5rem;
  margin: 0;
}

.ops-chart figcaption {
  display: flex;
  gap: 0.45rem;
  align-items: baseline;
}

.ops-chart figcaption strong {
  font-size: 1.25rem;
  font-variant-numeric: tabular-nums;
}

.ops-chart figcaption small,
.ops-axis,
.ops-chart-empty,
.ops-empty {
  font-size: var(--type-label);
}

.ops-bars {
  display: flex;
  height: 72px;
  gap: 2px;
  align-items: flex-end;
  padding-top: 4px;
  border-bottom: 1px solid var(--border);
}

.ops-bar {
  display: flex;
  height: 100%;
  min-width: 3px;
  flex: 1 1 0;
  align-items: flex-end;
}

.ops-bar i {
  display: block;
  width: 100%;
  background: color-mix(in srgb, var(--text) 45%, transparent);
}

.ops-chart-good .ops-bar i {
  background: color-mix(in srgb, var(--good) 65%, transparent);
}

.ops-bar-hot i {
  background: var(--bad) !important;
}

.ops-chart-warn .ops-bar-hot i {
  background: var(--accent-gold) !important;
}

.ops-axis {
  display: flex;
  justify-content: space-between;
  font-variant-numeric: tabular-nums;
}

.ops-runtime-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 1rem;
}

.ops-runtime-grid article {
  display: grid;
  gap: 0.25rem;
  padding: 0.85rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.ops-runtime-grid article.has-failures {
  border-color: color-mix(in srgb, var(--accent-gold) 55%, var(--border));
}

.ops-error-list {
  display: grid;
  gap: 0.4rem;
  margin-top: 1rem;
}

.ops-error {
  border: 1px solid var(--border);
}

.ops-error-head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
  padding: 0.55rem 0.7rem;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bad) 4%, var(--panel-inset));
  font-size: var(--type-label);
}

.ops-error-head code {
  overflow-wrap: anywhere;
}

.ops-error-kind {
  color: var(--bad);
  font-size: var(--type-label);
}

.ops-error-head time {
  margin-left: auto;
  font: var(--type-meta) var(--font-mono);
}

.ops-error-message,
.ops-error-actor {
  margin: 0 0.7rem 0.5rem;
  font-size: var(--type-label);
}

.ops-error-details {
  margin: 0 0.7rem 0.7rem;
}

.ops-error-details summary {
  width: max-content;
  cursor: pointer;
  color: var(--text-muted);
  font-size: var(--type-label);
}

.ops-error-details[open] summary {
  margin-bottom: 0.55rem;
}

.ops-error-trace {
  max-height: 24rem;
  margin: 0;
  padding: 0.6rem;
  overflow: auto;
  background: color-mix(in srgb, var(--border) 25%, transparent);
  font-size: var(--type-meta);
  line-height: 1.45;
}

@media (max-width: 980px) {
  .ops-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ops-access-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .ops-overview,
  .ops-summary,
  .ops-chart-grid,
  .ops-runtime-grid {
    grid-template-columns: 1fr;
  }

  .ops-clear-mark {
    margin-left: 0;
  }

  .ops-login-row {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .ops-mail-event-row {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .ops-login-row code,
  .ops-login-row time {
    white-space: normal;
  }

  .ops-mail-event-row time {
    grid-column: 1 / -1;
    white-space: normal;
  }

  .ops-account-meta {
    grid-template-columns: 1fr;
  }

}

/* One-time setup link handed to an administrator to deliver out of band. */
.setup-link-panel { display: grid; gap: 0.4rem; margin-bottom: 1.1rem; padding: 0.85rem 1rem; border: 1px solid color-mix(in srgb, var(--accent-gold) 55%, var(--border)); background: color-mix(in srgb, var(--accent-gold) 9%, transparent); }
.setup-link-panel p { margin: 0; color: var(--text-dim); font-size: 0.76rem; }
.setup-link-value { display: block; padding: 0.45rem 0.55rem; overflow-wrap: anywhere; border: 1px solid var(--border); background: var(--bg); color: var(--text); font-size: 0.74rem; cursor: text; }

/* Public preview. The dashed boundary and repeated lock mark distinguish an
   access entitlement from ordinary prerequisite progression. */
.form-honeypot {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

.auth-alt-actions {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.1rem;
  font-size: 0.78rem;
}

.auth-alt-actions a {
  color: var(--accent-secondary);
}

.auth-alt-actions .auth-trial-link {
  color: var(--accent-strong);
  font-weight: 700;
}

.trial-shell .topbar {
  border-bottom-color: color-mix(in srgb, var(--accent) 60%, var(--border));
}

.trial-page {
  display: grid;
  gap: 1.25rem;
  width: 100%;
}

.trial-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(12rem, 16rem);
  gap: 2rem;
  align-items: end;
  padding: 2rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
}

.trial-hero h1 {
  max-width: 48rem;
  margin: 0.35rem 0 0.7rem;
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.02;
}

.trial-hero p,
.trial-section-head p,
.trial-lock-grid p,
.trial-module-list p,
.trial-locked-card p {
  margin: 0;
  line-height: var(--copy-line-height);
}

.trial-window {
  display: grid;
  gap: 0.35rem;
  padding: 1rem;
  border: 1px solid color-mix(in srgb, var(--accent) 55%, var(--border));
  background: color-mix(in srgb, var(--accent) 8%, var(--panel));
}

.trial-window strong {
  color: var(--accent-strong);
  font-size: 1.25rem;
}

.trial-window span {
  font-size: var(--type-small);
  line-height: 1.45;
}

.trial-window.is-expired {
  border-color: color-mix(in srgb, var(--bad) 55%, var(--border));
  background: color-mix(in srgb, var(--bad) 7%, var(--panel));
}

.trial-window.is-expired strong {
  color: var(--bad);
}

.trial-route,
.trial-full-program {
  padding: 1.4rem;
}

.trial-section-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: start;
  margin-bottom: 1rem;
}

.trial-section-head h2 {
  margin: 0.25rem 0 0.35rem;
}

.trial-module-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.trial-module-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: 1rem 0;
  border-top: 1px solid var(--border);
}

.trial-module-list li:last-child {
  border-bottom: 1px solid var(--border);
}

.trial-module-list li.is-locked {
  opacity: 0.58;
}

.trial-step-marker {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-weight: 800;
}

.trial-module-list .is-current .trial-step-marker {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}

.trial-module-list .is-complete .trial-step-marker {
  border-color: var(--good);
  color: var(--good);
}

.trial-module-list strong {
  display: block;
  margin-bottom: 0.2rem;
}

.trial-module-feedback-status {
  display: block;
  margin-top: 0.4rem;
  color: var(--good);
  font-size: var(--type-label);
  font-weight: 700;
}

.trial-module-feedback-status.is-required {
  color: var(--warning);
}

.trial-module-list li.is-feedback-required .trial-step-marker {
  border-color: var(--warning);
}

.trial-lock-label {
  display: inline-flex;
  gap: 0.35rem;
  align-items: center;
  color: var(--chrome-subtle);
  font-size: var(--type-label);
  font-weight: 700;
}

.trial-full-program {
  border: 1px dashed color-mix(in srgb, var(--accent) 55%, var(--border));
  background: color-mix(in srgb, var(--accent) 3%, var(--panel));
}

.trial-lock-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.trial-lock-grid article {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.8rem;
  min-height: 8rem;
  padding: 1rem;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel-inset) 86%, transparent);
}

.trial-lock-grid strong {
  display: block;
  margin-bottom: 0.35rem;
}

.trial-lock-icon {
  position: relative;
  display: grid;
  place-items: center;
  width: 1.8rem;
  height: 1.8rem;
  border: 1px solid color-mix(in srgb, var(--accent) 55%, var(--border));
  color: var(--accent-strong);
}

.trial-lock-icon::before,
.trial-inline-lock::before {
  position: absolute;
  width: 0.48rem;
  height: 0.42rem;
  border: 1.5px solid currentColor;
  border-bottom: 0;
  border-radius: 0.35rem 0.35rem 0 0;
  content: "";
  transform: translateY(-0.32rem);
}

.trial-lock-icon::after,
.trial-inline-lock::after {
  position: absolute;
  width: 0.72rem;
  height: 0.56rem;
  border: 1.5px solid currentColor;
  background: color-mix(in srgb, currentColor 12%, transparent);
  content: "";
  transform: translateY(0.17rem);
}

.trial-inline-lock {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 0.9rem;
  height: 0.9rem;
  color: var(--chrome-subtle);
  transform: scale(0.78);
}

.trial-upgrade {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.trial-upgrade div {
  display: grid;
  gap: 0.2rem;
}

.trial-upgrade span {
  font-size: var(--type-small);
}

.trial-context-bar {
  display: flex;
  grid-column: 1 / -1;
  gap: 0.8rem;
  align-items: center;
  padding: 0.7rem 0.9rem;
  border: 1px dashed color-mix(in srgb, var(--accent) 60%, var(--border));
  background: color-mix(in srgb, var(--accent) 6%, var(--panel));
  font-size: var(--type-small);
}

.trial-context-bar strong,
.trial-context-bar a {
  color: var(--accent-strong);
}

.trial-context-bar a {
  margin-left: auto;
}

.trial-feedback-notice {
  grid-column: 1 / -1;
  margin: 0;
  padding: 0.7rem 0.85rem;
  border: 1px solid color-mix(in srgb, var(--good) 48%, var(--border));
  background: color-mix(in srgb, var(--good) 5%, var(--panel));
  color: var(--text);
  font-size: var(--type-small);
}

.foundation-nav-row.is-trial-locked {
  border-style: dashed;
  opacity: 0.52;
}

.trial-locked-page {
  display: grid;
  place-items: center;
  min-height: calc(100vh - 11rem);
}

.trial-locked-card {
  display: grid;
  justify-items: start;
  width: min(38rem, 100%);
  padding: 2rem;
  border: 1px dashed color-mix(in srgb, var(--accent) 65%, var(--border));
  background: var(--panel);
}

.trial-lock-icon.is-large {
  width: 2.6rem;
  height: 2.6rem;
  margin-bottom: 1.25rem;
  font-size: 1rem;
}

.trial-locked-card h1 {
  margin: 0.35rem 0 0.75rem;
}

.trial-locked-actions {
  display: flex;
  gap: 0.55rem;
  align-items: center;
}

.trial-locked-actions {
  margin-top: 1.25rem;
}

@media (max-width: 720px) {
  .auth-alt-actions,
  .trial-upgrade,
  .trial-context-bar {
    align-items: stretch;
    flex-direction: column;
  }

  .trial-context-bar a {
    margin-left: 0;
  }

  .trial-hero,
  .trial-lock-grid {
    grid-template-columns: 1fr;
  }

  .trial-module-list li {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .trial-module-list li > :last-child {
    grid-column: 2;
    justify-self: start;
  }
}

/* ---------------------------------------------------------------------- */
/* Production administration workspace                                    */
/* ---------------------------------------------------------------------- */

.admin-console-heading {
  gap: 1.5rem;
}

.admin-console-heading > div {
  min-width: 0;
}

.admin-console-heading > .btn {
  flex: none;
}

.admin-workspace-nav {
  position: sticky;
  top: 4.2rem;
  z-index: 8;
  display: flex;
  gap: 0;
  align-items: stretch;
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  backdrop-filter: blur(12px);
  scrollbar-color: var(--border-strong) transparent;
  scrollbar-width: thin;
}

.admin-workspace-nav::-webkit-scrollbar {
  height: 0.35rem;
}

.admin-workspace-nav::-webkit-scrollbar-track {
  background: transparent;
}

.admin-workspace-nav::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: var(--border-strong);
}

.admin-workspace-nav a {
  position: relative;
  display: grid;
  gap: 0.08rem;
  min-width: 0;
  flex: 1 1 0;
  padding: 0.45rem 0.8rem;
  color: var(--text);
}

.admin-workspace-nav a + a::before {
  position: absolute;
  top: 50%;
  left: 0;
  color: var(--border-strong);
  content: "/";
  transform: translate(-50%, -50%);
}

.admin-workspace-nav a::after {
  position: absolute;
  inset: auto 0 -1px;
  height: 3px;
  background: transparent;
  content: "";
}

.admin-workspace-nav a:hover {
  color: var(--accent-secondary);
}

.admin-workspace-nav a[aria-current="page"] {
  color: var(--accent-strong);
}

.admin-workspace-nav a[aria-current="page"]::after {
  background: var(--accent);
}

.admin-workspace-nav strong {
  font-size: var(--type-small);
}

.admin-workspace-nav span {
  overflow: hidden;
  color: var(--chrome-subtle);
  font-size: var(--type-meta);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.admin-workspace-nav a[aria-current="page"] span {
  color: var(--text);
}

.admin-workspace-nav a:focus-visible,
.ops-jump-nav a:focus-visible,
.admin-attention-item:focus-visible,
.admin-route-grid a:focus-visible,
.admin-content-workspace a:focus-visible {
  z-index: 1;
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

#overview,
#accounts,
#invite-account,
#recovery,
#preview-audit,
#admin-password,
#learner-position,
#content-pipeline,
#pipeline-tools,
#recent-jobs,
#status,
#dependency-checks,
#account-access,
#runtime,
#reported-problems,
#service-logs,
#incidents {
  scroll-margin-top: 9rem;
}

.admin-overview {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(18rem, 0.65fr);
  gap: 1rem;
  align-items: start;
}

.admin-attention {
  border-color: color-mix(in srgb, var(--accent-gold) 55%, var(--border));
}

.admin-attention.is-clear {
  border-color: color-mix(in srgb, var(--good) 45%, var(--border));
}

.admin-attention-heading {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: start;
}

.admin-attention-heading > div {
  min-width: 0;
}

.admin-attention-heading h2,
.admin-attention-heading p,
.admin-overview-summary dl,
.admin-overview-summary dd,
.admin-start-here h2,
.admin-training-guide h2,
.admin-training-guide p,
.admin-review-summary h2,
.admin-content-workspace h2,
.admin-content-workspace p,
.admin-context-note {
  margin: 0;
}

.admin-attention-heading h2 {
  margin-top: 0.15rem;
  font-size: 1.55rem;
}

.admin-attention-heading p {
  max-width: 54rem;
  margin-top: 0.35rem;
  font-size: var(--type-small);
  line-height: var(--copy-line-height);
}

.admin-attention-count {
  display: grid;
  width: 3rem;
  height: 3rem;
  flex: 0 0 auto;
  border: 1px solid color-mix(in srgb, var(--accent-gold) 65%, var(--border));
  border-radius: 50%;
  color: var(--accent-gold);
  font-size: 1.25rem;
  font-weight: 750;
  font-variant-numeric: tabular-nums;
  place-items: center;
}

.admin-attention-list {
  display: grid;
  margin-top: 1rem;
  border-top: 1px solid var(--border);
}

.admin-attention-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.admin-attention-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.admin-attention-item > div {
  display: grid;
  min-width: 0;
  gap: 0.12rem;
}

.admin-attention-item small {
  color: var(--chrome-subtle);
  font-size: var(--type-label);
  line-height: 1.45;
}

.admin-attention-item > span:last-child {
  color: var(--accent-secondary);
  font-size: var(--type-label);
  white-space: nowrap;
}

.admin-signal {
  width: 0.58rem;
  height: 0.58rem;
  border-radius: 50%;
  background: var(--accent);
}

.admin-attention-item.is-warning .admin-signal {
  background: var(--accent-gold);
}

.admin-attention-item.is-critical .admin-signal {
  background: var(--bad);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--bad) 12%, transparent);
}

.admin-clear-state {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.admin-clear-state > span {
  display: grid;
  width: 2rem;
  height: 2rem;
  flex: none;
  border: 1px solid color-mix(in srgb, var(--good) 55%, var(--border));
  border-radius: 50%;
  color: var(--good);
  place-items: center;
}

.admin-clear-state p {
  min-width: 0;
  margin: 0 auto 0 0;
  font-size: var(--type-small);
}

.admin-overview-summary {
  display: grid;
  gap: 0.65rem;
}

.admin-overview-summary dl {
  display: grid;
}

.admin-overview-summary dl > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.05rem 0.8rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
}

.admin-overview-summary dl > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.admin-overview-summary dt {
  font-size: var(--type-label);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.admin-overview-summary dd {
  grid-row: 1 / 3;
  grid-column: 2;
  align-self: center;
  font-size: 1.35rem;
  font-weight: 750;
  font-variant-numeric: tabular-nums;
}

.admin-overview-summary small {
  color: var(--chrome-subtle);
  font-size: var(--type-meta);
}

.admin-start-here {
  padding: clamp(1.1rem, 2vw, 1.4rem);
}

.admin-start-here .admin-section-head {
  margin-bottom: 1rem;
}

.admin-route-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.admin-route-grid a {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 0.45rem;
  min-height: 9.5rem;
  padding: 0.9rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
  color: var(--text);
}

.admin-route-grid a:hover {
  border-color: var(--border-strong);
  background: var(--panel-bright);
}

.admin-route-grid a > span {
  color: var(--chrome-subtle);
  font-size: var(--type-label);
  line-height: 1.5;
}

.admin-route-grid b {
  color: var(--accent-secondary);
  font-size: var(--type-label);
}

.admin-page-notice,
.admin-form-banner {
  margin: 0;
}

.admin-form-banner {
  padding: 0.75rem 0.9rem;
  border: 1px solid color-mix(in srgb, var(--bad) 55%, var(--border));
  background: color-mix(in srgb, var(--bad) 7%, var(--panel));
}

.admin-account-list,
.admin-account-controls,
.admin-tool-list {
  display: grid;
}

.admin-account-list {
  gap: 0.75rem;
  margin-top: 1rem;
}

.admin-account-card {
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.admin-account-card.needs-attention {
  border-color: color-mix(in srgb, var(--accent-gold) 48%, var(--border));
}

.admin-account-identity {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.7rem;
  align-items: center;
  padding: 0.85rem 1rem;
}

.admin-account-identity > div,
.admin-current-account,
.admin-account-action > div,
.admin-preview-action > div,
.admin-preview-action form > div,
.admin-tool-row > div {
  display: grid;
  min-width: 0;
  gap: 0.12rem;
}

.admin-account-name small,
.admin-account-status small {
  color: var(--chrome-subtle);
  font-size: var(--type-meta);
}

.admin-account-status {
  justify-items: end;
}

.admin-account-status .pill {
  margin-left: 0.35rem;
}

.admin-trial-countdown {
  min-width: 7.5rem;
  text-align: center;
}

.admin-trial-countdown-active {
  border-color: color-mix(in srgb, var(--good) 58%, var(--border));
  background: color-mix(in srgb, var(--good) 7%, transparent);
  color: var(--good);
}

.admin-trial-countdown-warning {
  border-color: color-mix(in srgb, var(--warning) 48%, var(--border));
  background: color-mix(in srgb, var(--warning) 10%, transparent);
  color: var(--warning);
}

.admin-trial-countdown-expired {
  border-color: color-mix(in srgb, var(--bad) 58%, var(--border));
  background: color-mix(in srgb, var(--bad) 7%, transparent);
  color: var(--bad);
}

.admin-trial-countdown-pending {
  color: var(--text-dim);
}

.admin-account-identity span:not(.pill),
.admin-current-account span,
.admin-account-action span,
.admin-preview-action span,
.admin-preview-action small,
.admin-tool-row span,
.admin-tool-row > small {
  color: var(--chrome-subtle);
  font-size: var(--type-label);
  line-height: 1.45;
}

.admin-current-account {
  margin: 0.75rem 1rem;
  padding: 0.65rem 0.75rem;
  border-left: 3px solid var(--accent-secondary);
  background: color-mix(in srgb, var(--accent-secondary) 6%, transparent);
}

.admin-account-controls {
  border-top: 1px solid var(--border);
}

.admin-account-routine,
.admin-account-danger {
  display: grid;
}

.admin-account-danger {
  border-top: 1px solid color-mix(in srgb, var(--bad) 48%, var(--border));
  background: color-mix(in srgb, var(--bad) 4%, transparent);
}

.admin-control-group-heading {
  display: grid;
  gap: 0.08rem;
  padding: 0.55rem 1rem;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--text) 2.5%, transparent);
}

.admin-control-group-heading strong {
  font-size: var(--type-label);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.admin-control-group-heading span {
  color: var(--chrome-subtle);
  font-size: var(--type-meta);
}

.admin-account-danger .admin-control-group-heading strong {
  color: var(--bad);
}

.admin-account-action {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  margin: 0;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
}

.admin-account-action:last-child {
  border-bottom: 0;
}

.admin-recovery-action label {
  display: grid;
  min-width: 0;
  gap: 0.3rem;
  color: var(--text);
  font-size: var(--type-label);
}

.admin-recovery-action label small {
  color: var(--chrome-subtle);
  font-size: var(--type-meta);
}

.admin-recovery-action input,
.admin-log-toolbar input,
.admin-log-toolbar select {
  width: 100%;
  min-width: 0;
  min-height: 2.55rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  outline: 0;
  background: var(--bg);
  color: var(--text);
  font: var(--control-font-size)/var(--control-line-height) var(--font-sans);
}

.admin-recovery-action input:focus,
.admin-log-toolbar input:focus,
.admin-log-toolbar select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent);
}

.admin-danger-action {
  border-color: color-mix(in srgb, var(--bad) 42%, var(--border));
  background: color-mix(in srgb, var(--bad) 5%, transparent);
}

.admin-danger-action strong {
  color: var(--bad);
}

.admin-invite-form {
  grid-template-columns: minmax(10rem, 0.8fr) minmax(14rem, 1fr) minmax(12rem, 0.7fr);
  align-items: start;
  margin-top: 1rem;
}

.admin-invite-form label:last-of-type {
  grid-column: auto;
}

.admin-invite-form > button {
  grid-column: 1 / -1;
  justify-self: start;
}

.admin-invite-form label > span small {
  margin-left: 0.3rem;
  color: var(--chrome-subtle);
  font-weight: 400;
}

.admin-preview-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 1rem;
}

.admin-preview-metrics > div {
  display: grid;
  gap: 0.1rem;
  padding: 0.7rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.admin-preview-metrics strong {
  font-size: 1.15rem;
  font-variant-numeric: tabular-nums;
}

.admin-preview-metrics span,
.admin-context-note {
  color: var(--chrome-subtle);
  font-size: var(--type-label);
}

.admin-context-note {
  margin-top: 0.45rem;
}

.admin-preview-action {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  margin-top: 1rem;
  padding: 0.85rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.admin-preview-action > form,
form.admin-preview-action {
  margin-bottom: 0;
}

.admin-preview-action .admin-danger-action {
  display: grid;
  grid-template-columns: minmax(12rem, 1fr) auto;
  gap: 0.8rem;
  align-items: center;
  margin: -0.35rem;
  padding: 0.7rem;
  border: 1px solid color-mix(in srgb, var(--bad) 42%, var(--border));
}

.admin-password-visible .password-form {
  margin-top: 1rem;
}

.admin-training-summary {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(18rem, 0.6fr);
  gap: 1rem;
  align-items: stretch;
}

.admin-review-summary,
.admin-training-guide {
  display: grid;
  align-content: start;
  gap: 0.85rem;
}

.admin-training-guide {
  border-color: color-mix(in srgb, var(--accent-secondary) 38%, var(--border));
}

.admin-training-guide p,
.admin-review-summary .admin-section-head p {
  font-size: var(--type-small);
  line-height: var(--copy-line-height);
}

.admin-queue-counts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.admin-queue-counts > div {
  display: grid;
  gap: 0.15rem;
  padding: 0.7rem;
  border-right: 1px solid var(--border);
}

.admin-queue-counts > div:last-child {
  border-right: 0;
}

.admin-queue-counts dt {
  color: var(--chrome-subtle);
  font-size: var(--type-meta);
}

.admin-queue-counts dd {
  order: -1;
  margin: 0;
  font-size: 1.2rem;
  font-weight: 750;
  font-variant-numeric: tabular-nums;
}

.admin-review-summary > .btn {
  justify-self: start;
}

.admin-learner-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.admin-learner-row {
  align-content: start;
  padding: 0.9rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.admin-learner-evidence {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
}

.admin-learner-evidence dt,
.admin-learner-evidence small {
  color: var(--chrome-subtle);
  font-size: var(--type-meta);
}

.admin-learner-evidence dd {
  margin: 0;
  font-size: var(--type-label);
  font-weight: 700;
}

.admin-empty-state > .btn {
  justify-self: start;
  margin-top: 0.5rem;
}

.admin-content-summary,
.admin-content-workspaces {
  display: grid;
  gap: 0.8rem;
}

.admin-content-summary {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.admin-content-summary article {
  display: grid;
  gap: 0.15rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  background: var(--panel);
}

.admin-content-summary article.needs-attention {
  border-color: color-mix(in srgb, var(--accent-gold) 48%, var(--border));
}

.admin-content-summary span,
.admin-content-summary small {
  color: var(--chrome-subtle);
  font-size: var(--type-label);
}

.admin-content-summary strong {
  font-size: 1.55rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
}

.admin-table-scroll {
  margin-top: 1rem;
  overflow-x: auto;
}

.admin-table-scroll:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.admin-capacity-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--type-small);
}

.admin-capacity-table th,
.admin-capacity-table td {
  padding: 0.7rem 0.75rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}

.admin-capacity-table thead th {
  color: var(--chrome-subtle);
  font-size: var(--type-meta);
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.admin-capacity-table tbody th {
  width: 40%;
}

.admin-capacity-table tbody tr:last-child > * {
  border-bottom: 0;
}

.admin-content-workspaces {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.admin-content-workspace {
  display: grid;
  grid-template-rows: auto auto 1fr auto auto;
  gap: 0.45rem;
}

.admin-content-workspace p {
  color: var(--chrome-subtle);
  font-size: var(--type-small);
  line-height: var(--copy-line-height);
}

.admin-content-workspace > strong {
  font-size: var(--type-label);
}

.admin-content-workspace > .btn {
  justify-self: start;
  margin-top: 0.35rem;
}

.admin-tool-list {
  margin-top: 1rem;
  border-top: 1px solid var(--border);
}

.admin-tool-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.2rem 1rem;
  align-items: center;
  margin: 0;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}

.admin-tool-row:last-child {
  border-bottom: 0;
}

.admin-tool-row > small {
  grid-column: 1 / -1;
  color: var(--accent-gold);
}

.admin-jobs-visible .admin-job-list {
  margin-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.ops-jump-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
}

.ops-jump-nav a {
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
  color: var(--text);
  font-size: var(--type-label);
}

.ops-jump-nav a:hover {
  border-color: var(--border-strong);
  background: var(--panel-bright);
}

.ops-overview-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 0.75rem;
}

.ops-overview-links a {
  color: var(--accent-secondary);
  font-size: var(--type-label);
}

.ops-readiness {
  border-color: color-mix(in srgb, var(--good) 38%, var(--border));
}

.ops-readiness:not(.ops-readiness-ready) {
  border-color: color-mix(in srgb, var(--accent-gold) 52%, var(--border));
}

.ops-readiness-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  margin-top: 1rem;
}

.ops-readiness-check {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.15rem 0.65rem;
  align-items: start;
  padding: 0.65rem 0.7rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.ops-readiness-check > .admin-signal {
  margin-top: 0.42rem;
  background: var(--good);
}

.ops-readiness-check:not(.is-ready) > .admin-signal {
  background: var(--accent-gold);
}

.ops-readiness-check.is-failed > .admin-signal,
.ops-readiness-check.is-critical > .admin-signal,
.ops-readiness-check.is-unavailable > .admin-signal {
  background: var(--bad);
}

.ops-readiness-check > div {
  display: grid;
  min-width: 0;
  gap: 0.1rem;
}

.ops-readiness-check p,
.ops-readiness-time {
  margin: 0;
  color: var(--chrome-subtle);
  font-size: var(--type-meta);
  line-height: 1.45;
}

.ops-readiness-check > small {
  grid-column: 2 / -1;
  color: var(--chrome-subtle);
  font-size: var(--type-meta);
}

.ops-readiness-time {
  margin-top: 0.65rem;
  text-align: right;
}

.ops-source-unavailable {
  margin: 0.85rem 0 0;
  padding: 0.75rem 0.85rem;
  border: 1px solid color-mix(in srgb, var(--accent-gold) 52%, var(--border));
  background: color-mix(in srgb, var(--accent-gold) 7%, transparent);
  font-size: var(--type-small);
}

.ops-access .ops-account-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.7rem;
}

.admin-bug-reports .admin-action-list {
  margin-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.admin-bug-reports .bug-report-detail {
  margin-top: 0.25rem;
  color: var(--text);
  line-height: 1.5;
  white-space: pre-wrap;
}

.admin-bug-reports .bug-report-clear {
  flex: none;
}

.admin-log-toolbar {
  display: grid;
  grid-template-columns: minmax(14rem, 1fr) minmax(10rem, 0.35fr) auto;
  gap: 0.75rem;
  align-items: end;
  margin-top: 1rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  background: var(--panel-inset);
}

.admin-log-toolbar label {
  display: grid;
  min-width: 0;
  gap: 0.3rem;
}

.admin-log-toolbar label > span {
  color: var(--chrome-subtle);
  font-size: var(--type-meta);
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

@media (max-width: 1100px) {
  .admin-workspace-nav {
    position: static;
  }

  #overview,
  #accounts,
  #invite-account,
  #recovery,
  #preview-audit,
  #admin-password,
  #learner-position,
  #content-pipeline,
  #pipeline-tools,
  #recent-jobs,
  #status,
  #dependency-checks,
  #account-access,
  #runtime,
  #reported-problems,
  #service-logs,
  #incidents {
    scroll-margin-top: 5.3rem;
  }

  .admin-overview,
  .admin-training-summary {
    grid-template-columns: 1fr;
  }

  .admin-route-grid,
  .admin-content-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .admin-route-grid a {
    min-height: 8rem;
  }

  .admin-learner-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .admin-content-workspaces {
    grid-template-columns: 1fr;
  }

  .ops-readiness-grid {
    grid-template-columns: 1fr;
  }

  .admin-invite-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .admin-invite-form label:last-of-type {
    grid-column: 1 / -1;
  }

  .admin-preview-action {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .admin-console-heading {
    align-items: stretch;
  }

  .admin-workspace-nav {
    display: flex;
    margin-inline: -1rem;
    padding-inline: 1rem;
    overflow-x: auto;
    border-inline: 0;
    scroll-snap-type: x proximity;
  }

  .admin-workspace-nav a {
    min-width: 9.5rem;
    scroll-snap-align: start;
  }

  .admin-attention-heading,
  .admin-clear-state,
  .admin-account-action,
  .admin-preview-action .admin-danger-action,
  .admin-tool-row,
  .admin-bug-reports .admin-action-row {
    align-items: stretch;
    grid-template-columns: 1fr;
  }

  .admin-attention-count {
    width: 2.5rem;
    height: 2.5rem;
  }

  .admin-attention-item {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .admin-attention-item > span:last-child {
    grid-column: 2;
  }

  .admin-clear-state {
    display: grid;
  }

  .admin-clear-state p {
    margin: 0;
  }

  .admin-route-grid,
  .admin-content-summary,
  .admin-preview-metrics,
  .admin-queue-counts,
  .admin-invite-form {
    grid-template-columns: 1fr;
  }

  .admin-route-grid a {
    min-height: 0;
  }

  .admin-account-identity {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .admin-account-status {
    grid-column: 2;
    justify-items: start;
  }

  .admin-account-status .pill {
    margin: 0 0.35rem 0 0;
  }

  .admin-trial-countdown {
    min-width: 0;
  }

  .admin-current-account {
    margin-left: 1rem;
  }

  .admin-account-action .btn,
  .admin-tool-row .btn,
  .admin-preview-action .btn,
  .admin-bug-reports .btn {
    justify-self: start;
  }

  .admin-invite-form label:last-of-type,
  .admin-invite-form > button {
    grid-column: auto;
  }

  .admin-queue-counts > div {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .admin-queue-counts > div:last-child {
    border-bottom: 0;
  }

  .admin-queue-counts dd {
    grid-column: 2;
  }

  .admin-learner-evidence {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ops-access .ops-account-meta {
    display: grid;
  }

  .ops-jump-nav {
    flex-wrap: nowrap;
    margin-inline: -1rem;
    padding-inline: 1rem;
    overflow-x: auto;
  }

  .ops-jump-nav a {
    flex: none;
  }

  .admin-log-toolbar {
    grid-template-columns: 1fr;
  }

  .admin-log-toolbar .btn {
    justify-self: start;
  }
}

@media (max-width: 420px) {
  .admin-learner-evidence {
    grid-template-columns: 1fr;
  }
}

/* Worked diagrams retain readable text as their relationships stack. */
.learning-diagram {
  container-type: inline-size;
  min-width: 0;
  margin: 1.5rem 0;
  padding: clamp(1rem, 2.5vw, 1.75rem);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--panel-inset);
}

.learning-diagram header h3 {
  margin: 0.35rem 0 0.7rem;
  font-size: 1.2rem;
  line-height: 1.4;
}

.learning-diagram p {
  max-width: 75ch;
  line-height: 1.65;
}

.learning-diagram-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.35rem 0;
}

.learning-diagram-controls button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text-dim);
  font: 500 0.9rem/1.4 var(--font-sans);
  cursor: pointer;
}

.learning-diagram-controls button span {
  color: var(--text-faint);
  font-family: var(--font-mono);
}

.learning-diagram-controls button[aria-selected="true"] {
  border-color: var(--accent-secondary);
  background: color-mix(in srgb, var(--accent-secondary) 10%, var(--panel));
  color: var(--text);
  box-shadow: inset 0 -2px var(--accent-secondary);
}

.learning-diagram-controls button[aria-selected="true"] span {
  color: var(--accent-secondary);
}

.learning-diagram :is(button, summary):focus-visible,
.foundation-diagram-legend button:focus-visible {
  outline: 2px solid var(--accent-secondary);
  outline-offset: 3px;
}

.learning-diagram-panel h4 {
  margin: 1rem 0;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.5;
}

.learning-diagram-panel:focus-visible {
  outline: 2px solid var(--accent-secondary);
  outline-offset: 5px;
}

.learning-diagram-code {
  padding: 0.8rem 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  tab-size: 2;
}

.learning-diagram-code > code {
  display: block;
  padding: 0;
  border: 0;
  background: none;
  color: var(--text);
  font-size: 0.85rem;
  line-height: 1.7;
  /* Line wrappers provide their own breaks. */
  white-space: normal;
}

.learning-diagram-code-line {
  display: block;
  position: relative;
  padding: 0.15rem 0.75rem 0.15rem 2.75rem;
  border-left: 3px solid transparent;
  white-space: pre-wrap;
}

.learning-diagram-code-line.is-current {
  border-left-color: var(--accent-secondary);
  background: color-mix(in srgb, var(--accent-secondary) 10%, var(--panel));
}

.learning-diagram-line-number {
  position: absolute;
  left: 0.6rem;
  color: var(--text-faint);
  user-select: none;
}

.learning-diagram-flow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr) 5rem) minmax(0, 1fr);
  margin: 1.5rem 0;
  padding: 0;
  list-style: none;
}

.learning-diagram-flow > li {
  display: grid;
  grid-template-columns: subgrid;
  grid-column: span 2;
  min-width: 0;
}

.learning-diagram-flow > li:last-child {
  grid-column: span 1;
}

.learning-diagram-node {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  min-width: 0;
  padding: 1rem;
  border: 1px solid var(--border-strong);
  border-top: 3px solid var(--accent-secondary);
  border-radius: 6px;
  background: var(--panel);
  box-shadow: 0 4px 12px rgb(0 0 0 / 5%);
}

.learning-diagram-role {
  color: var(--text-dim);
  font: 500 0.75rem/1.4 var(--font-sans);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.learning-diagram-node strong {
  color: var(--text);
  font-size: 1rem;
  overflow-wrap: anywhere;
}

.learning-diagram-node code {
  padding: 0.5rem;
  border-radius: 4px;
  background: var(--panel-inset);
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.learning-diagram-node p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.85rem;
  line-height: 1.5;
}

.learning-diagram-link {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.25rem;
  padding: 0.35rem;
  color: var(--text-dim);
  font-size: 0.75rem;
  line-height: 1.5;
  text-align: center;
  overflow-wrap: anywhere;
}

.learning-diagram-link b {
  color: var(--accent-secondary);
  font-size: 1.4rem;
}

.learning-diagram-caveat {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.learning-diagram-prediction {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-strong);
}

.learning-diagram-prediction > p {
  margin-top: 0;
}

.learning-diagram summary,
.course-visual-disclosure > summary {
  padding: 0.6rem 0;
  color: var(--text);
  line-height: 1.5;
  cursor: pointer;
}

.learning-diagram-sources {
  margin-top: 1rem;
  font-size: 0.85rem;
  overflow-wrap: anywhere;
}

.course-visual-disclosure {
  margin-top: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.course-visual-disclosure > summary {
  padding: 1rem 0;
}

@container (max-width: 46rem) {
  .learning-diagram-flow,
  .learning-diagram-flow > li {
    display: flex;
    flex-direction: column;
  }

  .learning-diagram-link {
    flex-direction: row-reverse;
    justify-content: flex-end;
    gap: 0.6rem;
    min-height: 2.4rem;
    padding: 0.5rem 1rem;
    text-align: left;
  }

  .learning-diagram-link b {
    transform: rotate(90deg);
  }
}

/* A worked reading has a stopping point before the independent checkpoint. */
.foundation-walkthrough {
  min-width: 0;
}

.foundation-walkthrough > header p,
.foundation-reading-explanation,
.foundation-study-stop p {
  max-width: 75ch;
  font-size: 0.96rem;
  line-height: 1.7;
}

.foundation-reading-code {
  margin: 1rem 0;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--panel-inset);
}

.foundation-reading-code figcaption {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border);
  overflow-wrap: anywhere;
}

.foundation-reading-code figcaption code {
  border: 0;
  background: none;
}

.foundation-reading-code pre {
  margin: 0;
  padding: 0.75rem 0;
  background: none;
}

.foundation-reading-code pre > code {
  display: block;
  padding: 0;
  border: 0;
  background: none;
  font-size: 0.85rem;
  line-height: 1.7;
  white-space: normal;
}

.foundation-reading-line {
  position: relative;
  display: block;
  min-height: 1.7em;
  padding: 0.15rem 0.75rem 0.15rem 3rem;
  border-left: 3px solid transparent;
  color: var(--text-dim);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.foundation-reading-line-no {
  position: absolute;
  left: 0.5rem;
  width: 1.75rem;
  color: var(--text-faint);
  text-align: right;
  user-select: none;
}

.foundation-reading-line.is-focus {
  color: var(--text);
  border-left-color: var(--accent-secondary);
  background: color-mix(in srgb, var(--accent-secondary) 12%, var(--panel));
}

.foundation-study-stop {
  margin-top: 1.5rem;
  padding: 1.25rem;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--panel-inset);
}

.foundation-study-stop h4 {
  margin: 0;
}

.foundation-study-stop .btn {
  text-transform: none;
  letter-spacing: 0;
}

.foundation-study-stop [role="status"]:empty {
  display: none;
}

.foundation-optional-practice,
.foundation-checkpoint-details {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.foundation-optional-practice > summary,
.foundation-checkpoint-details > summary,
.foundation-reading-context > summary {
  padding: 1rem 0;
  cursor: pointer;
  color: var(--text);
  line-height: 1.6;
}

.foundation-optional-practice > summary span {
  display: block;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.foundation-nav-group-title,
.foundation-later-modules > summary {
  display: block;
  padding: 1rem;
  color: var(--text-dim);
  font-size: 0.85rem;
  line-height: 1.5;
}

.foundation-later-modules > summary {
  display: list-item;
  cursor: pointer;
}

.foundation-later-modules > summary span {
  display: block;
  margin-top: 0.4rem;
  color: var(--text-faint);
  font-size: 0.75rem;
}

.foundation-later-modules {
  border-top: 1px solid var(--border);
}

.foundation-d8-observation {
  scroll-margin-top: 6rem;
}