/* Reusable UI components: cards, buttons, badges, theme toggle, callouts. */

.card {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  padding: var(--s-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}
.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
}
.card:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.card__eyebrow {
  font-size: var(--fs--1);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 600;
}
.card__title {
  font-size: var(--fs-1);
  font-weight: 650;
  color: var(--fg-strong);
  letter-spacing: -0.01em;
  line-height: var(--lh-snug);
}
.card__desc {
  color: var(--muted);
  font-size: var(--fs--1);
  line-height: var(--lh-snug);
}
.card__meta {
  margin-top: auto;
  padding-top: var(--s-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
}

.card--accent::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--accent);
  opacity: 0.65;
  transition: opacity var(--transition);
  z-index: 1;
}
.card:hover.card--accent::before { opacity: 1; }

/* Cover-card variant: 16:9 image banner on top + text body below. Used on
 * the home (institutions), institution (courses), and term (courses) pages.
 * Inherits hover / focus / accent-rail from .card; the outer .card padding
 * is reset so the banner can run edge-to-edge. */
.card--cover { padding: 0; overflow: hidden; }
.card--cover .card__cover {
  aspect-ratio: 16 / 9;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-color: var(--surface-2);
  /* Vignette + image: vignette reads as depth without darkening the whole photo. */
  background-image:
    var(--card-cover-vignette),
    var(--cover,
      linear-gradient(135deg,
        color-mix(in oklch, var(--accent) 25%, var(--surface-2)),
        var(--surface-2)));
  border-bottom: 1px solid var(--border);
  transition: transform 600ms cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: transform;
}
[data-theme="dark"] .card--cover .card__cover {
  background-image:
    var(--card-cover-vignette),
    var(--cover-dark,
      var(--cover,
        linear-gradient(135deg,
          color-mix(in oklch, var(--accent) 25%, var(--surface-2)),
          var(--surface-2))));
}
.card:hover .card__cover { transform: scale(1.045); }
.card--cover .card__body {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  padding: var(--s-4) var(--s-5) var(--s-5);
}
.card--cover .card__title { font-size: var(--fs-1); }
.card--cover .card__desc {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Homepage institution cards: taller cover, serif title, stronger shadow. */
.card--featured.card--cover .card__cover { aspect-ratio: 4 / 3; }
.card--featured.card--cover .card__body {
  padding: var(--s-5) var(--s-5) var(--s-6);
}
.card--featured.card--cover .card__eyebrow {
  color: var(--accent);
  letter-spacing: 0.12em;
}
.card--featured.card--cover .card__title {
  font-family: var(--font-display);
  font-size: var(--fs-2);
  line-height: 1.15;
}
.card--featured.card--cover .card__desc { color: var(--fg); }
.card.card--featured:hover {
  box-shadow: var(--shadow-lg);
}

/* Institution / term course tiles: denser than featured. */
.card--course.card--cover .card__body {
  padding: var(--s-4);
}

/* Badge / tag */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: var(--fs--1);
  font-weight: 500;
  padding: 0.15em 0.6em;
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  color: var(--muted);
  border: 1px solid var(--border);
}
.badge--accent {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: transparent;
}
.badge--muted {
  background: var(--surface-2);
  color: var(--muted);
  border-color: var(--border);
  font-style: italic;
}
.badge--status-in-progress {
  background: var(--status-in-progress-bg);
  color: var(--status-in-progress-fg);
  border-color: transparent;
}
.badge--status-not-started {
  background: var(--status-not-started-bg);
  color: var(--status-not-started-fg);
  border-color: transparent;
}
.badge--status-finished {
  background: var(--status-finished-bg);
  color: var(--status-finished-fg);
  border-color: transparent;
}

.card--course.card--cover .card__meta {
  margin-top: var(--s-2);
}

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: 0.5rem 0.9rem;
  font-size: var(--fs--1);
  font-weight: 500;
  color: var(--fg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.btn:hover { background: var(--surface-2); border-color: var(--border-strong); text-decoration: none; }
.btn:focus-visible { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.btn--sm { padding: 0.35rem 0.65rem; font-size: var(--fs--2); }
.btn--primary {
  background: var(--accent);
  color: var(--accent-fg, #fff);
  border-color: transparent;
}
.btn--primary:hover {
  background: color-mix(in oklch, var(--accent) 88%, #000);
  border-color: transparent;
  color: var(--accent-fg, #fff);
}
.btn--ghost {
  background: transparent;
  border-color: var(--border);
}

/* Icon-only button (theme toggle) */
.icon-btn {
  width: 2.25rem;
  height: 2.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  color: var(--muted);
  border: 1px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.icon-btn:hover {
  background: var(--surface-2);
  color: var(--fg-strong);
  border-color: var(--border);
}
.icon-btn svg { width: 1.1rem; height: 1.1rem; }

.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* Editorial hero — home / institution / term (full) and course (compact). */
.editorial-hero {
  padding: var(--s-8) 0 var(--s-7);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--s-6);
}
.editorial-hero--home {
  padding: var(--s-6) 0 var(--s-5);
  margin-bottom: var(--s-5);
}
.editorial-hero--compact {
  padding: var(--s-6) 0 var(--s-5);
  margin-bottom: var(--s-6);
}
.editorial-hero__eyebrow {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--fs--1);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: var(--s-3);
}
.editorial-hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-4);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--fg-strong);
  margin: 0 0 var(--s-4);
}
.editorial-hero--compact .editorial-hero__title {
  font-size: var(--fs-3);
  margin-bottom: var(--s-3);
}
.editorial-hero--compact .editorial-hero__eyebrow {
  color: var(--muted);
  letter-spacing: 0.08em;
}
.editorial-hero__lead {
  font-family: var(--font-sans);
  font-size: var(--fs-1);
  color: var(--fg);
  max-width: 62ch;
  margin: 0 0 var(--s-4);
  line-height: var(--lh-snug);
}
.editorial-hero--compact .editorial-hero__lead {
  color: var(--muted);
  max-width: 60ch;
}
.editorial-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
}

/* Home sections */
.home-institutions {
  margin-bottom: var(--s-6);
}
.home-section {
  margin-top: var(--s-7);
}
.home-section__head {
  margin-bottom: var(--s-4);
}
.home-section__title {
  font-family: var(--font-display);
  font-size: var(--fs-2);
  margin: 0 0 var(--s-2);
}
.home-section__lead {
  margin: 0;
  color: var(--muted);
  max-width: 70ch;
}

.home-featured-docs {
  display: grid;
  gap: var(--s-3);
}

.home-doc-card {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.home-doc-card__main {
  display: flex;
  align-items: stretch;
  gap: var(--s-3);
  min-width: 0;
}
.home-doc-card__kind {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: stretch;
  flex-shrink: 0;
  min-width: 5.5rem;
}
.home-doc-card__text {
  min-width: 0;
}
.home-doc-card__title {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--s-2);
}
.home-doc-card__title-text {
  font-weight: 650;
  color: var(--fg-strong);
  line-height: var(--lh-snug);
}
.home-doc-card__tags {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--s-2);
}
.home-doc-card__institution {
  margin-left: var(--s-1);
  white-space: nowrap;
}
.home-doc-card__desc {
  color: var(--muted);
  margin-top: var(--s-2);
}
.home-doc-card__lock {
  color: var(--muted);
  font-size: var(--fs--1);
}
.home-doc-card--locked {
  opacity: 0.9;
}
@media (max-width: 44rem) {
  .home-doc-card {
    align-items: flex-start;
  }
  .home-doc-card__kind {
    align-self: flex-start;
    min-height: 2rem;
  }
}

.home-search__box {
  display: grid;
  gap: var(--s-2);
}
.home-search__input {
  width: 100%;
  padding: var(--s-3) var(--s-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--fg);
  font-size: var(--fs-1);
}
.home-search__input:focus {
  outline: none;
  border-color: color-mix(in oklch, var(--accent) 55%, var(--border));
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 22%, transparent);
}
.home-search__hint {
  color: var(--muted);
  font-size: var(--fs--1);
}
.home-search__results {
  margin-top: var(--s-4);
  display: grid;
  gap: var(--s-2);
}
.home-search__group-title {
  margin-top: var(--s-3);
  color: var(--muted);
  font-size: var(--fs--1);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.home-search__result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-3) var(--s-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.home-search__result:hover {
  border-color: color-mix(in oklch, var(--accent) 35%, var(--border));
  text-decoration: none;
}
.home-search__result-main {
  min-width: 0;
}
.home-search__result-title {
  font-weight: 650;
  color: var(--fg-strong);
}
.home-search__result-subtitle {
  margin-top: 2px;
  color: var(--muted);
  font-size: var(--fs--1);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.home-search__result-lock {
  color: var(--muted);
  font-size: var(--fs--1);
  flex-shrink: 0;
}

/* Doc list (course documents) */
.doc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--s-2);
}
.doc-list a {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--fg);
  background: var(--surface);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.doc-list a:hover {
  text-decoration: none;
  border-color: var(--border-strong);
  background: var(--surface-2);
  transform: translateX(2px);
}
.doc-list a::after {
  content: "→";
  margin-left: auto;
  color: var(--muted);
  transition: transform var(--transition), color var(--transition);
}
.doc-list a:hover::after { color: var(--accent); transform: translateX(2px); }

.doc-list__title { font-weight: 500; color: var(--fg-strong); }

/* Course library */
.course-section { margin-top: var(--s-8); }
.section-head__desc {
  margin: var(--s-2) 0 0;
  color: var(--muted);
  font-size: var(--fs--1);
  max-width: 60ch;
}
.course-start-grid {
  display: grid;
  gap: var(--s-4);
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 18rem), 1fr));
}
.course-start-card {
  min-height: 7rem;
  text-decoration: none;
  color: inherit;
}
.course-start-card:hover { color: inherit; text-decoration: none; }
.course-start-card__badge { align-self: flex-start; }
.course-start-card__cta {
  margin-top: auto;
  font-size: var(--fs--1);
  font-weight: 600;
  color: var(--accent);
}
.library-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--s-2);
}
.library-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-3) var(--s-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.library-item__main {
  display: flex;
  align-items: flex-start;
  gap: var(--s-3);
  min-width: 0;
}
.library-item__icon {
  flex-shrink: 0;
  font-size: var(--fs--2);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--muted);
  width: 2.5rem;
  text-align: center;
  padding-top: 0.1rem;
}
.library-item__text {
  display: flex;
  flex-direction: column;
  gap: var(--s-1);
  min-width: 0;
}
.library-item__title {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--s-4);
  font-weight: 500;
  color: var(--fg-strong);
}
.library-item__tags {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--s-1);
}
.library-item__desc {
  font-size: var(--fs--1);
  color: var(--muted);
  line-height: var(--lh-snug);
}
.library-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-1);
}
.library-item__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  flex-shrink: 0;
}
.library-item--locked .library-item__title {
  color: var(--fg);
}
.library-item__lock {
  font-size: var(--fs--1);
  color: var(--muted);
  white-space: nowrap;
}
.course-start-card--locked {
  cursor: default;
  opacity: 0.92;
}
.course-start-card__lock {
  color: var(--muted);
  font-weight: 400;
}
.library-viewer__frame-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface-2);
  height: calc(100vh);
  min-height: 78vh;
}
.library-viewer__frame {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}
.library-viewer__fallback {
  margin-top: var(--s-3);
  font-size: var(--fs--1);
  color: var(--muted);
}

/* ---------------------------------------------------------------------------
 * Social icons (footer)
 * ---------------------------------------------------------------------------
 * Each icon is a circular button with two stacked SVGs inside. At rest the
 * bottom SVG is visible on the muted surface. On hover, the inner stack
 * translates up by the button height, revealing the white top SVG, while the
 * background animates to the brand color. The pattern is a modernized take
 * on the original Canvas template hover animation (margin-top -> transform).
 * --------------------------------------------------------------------------- */
.social-icon {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: stretch;
  justify-content: stretch;
  border-radius: 50%;
  overflow: hidden;
  position: relative;
  background: var(--surface-2);
  color: var(--muted);
  transition: background-color 280ms ease, color 280ms ease, transform 280ms ease;
}
.social-icon:hover { color: #fff; transform: translateY(-1px); }
.social-icon:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.social-icon__stack {
  display: flex;
  flex-direction: column;
  width: 100%;
  transition: transform 320ms cubic-bezier(0.2, 0.7, 0.2, 1);
}
.social-icon__stack > svg {
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  padding: 9px;
  box-sizing: border-box;
  fill: currentColor;
  display: block;
}
.social-icon__stack > svg:nth-child(2) { color: #fff; }
.social-icon:hover .social-icon__stack { transform: translateY(-36px); }

/* Brand-color backgrounds on hover. Same hex values as the reference site
 * (Canvas template defaults) — recognizable, on-brand. */
.social-icon--youtube:hover   { background-color: #C4302B; }
.social-icon--instagram:hover {
  background: linear-gradient(45deg,
    #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
}
.social-icon--github:hover    { background-color: #181717; }
.social-icon--linkedin:hover  { background-color: #0E76A8; }
.social-icon--xiaohongshu:hover { background-color: #FF2442; }
/* Xiaohongshu: pill shape + extra width so the wordmark is not clipped by a
 * circle mask (matches the real logo). Hover stack height stays 36px. */
.social-icon.social-icon--xiaohongshu {
  width: 56px;
  min-width: 56px;
  border-radius: 9999px;
}
.social-icon--xiaohongshu .social-icon__stack > svg {
  width: 100%;
  height: 36px;
  padding: 2px 5px;
  box-sizing: border-box;
}
.social-icon--xiaohongshu .social-icon__xhs-text {
  stroke: currentColor;
  stroke-width: 0.9px;
  stroke-linejoin: round;
  paint-order: stroke fill;
}

/* Empty state */
.empty {
  padding: var(--s-7);
  text-align: center;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  color: var(--muted);
  background: var(--surface);
}

/* Section heading row */
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-4);
  margin: var(--s-7) 0 var(--s-4);
}
.section-head h2 { font-size: var(--fs-2); }

/* Section band — institution page grouping (editorial weight vs. old caption). */
.section-band {
  margin: var(--s-8) 0 var(--s-5);
}
.section-band:first-of-type { margin-top: var(--s-6); }
.section-band__eyebrow {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--fs--1);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: var(--s-2);
}
.section-band__dash {
  display: block;
  width: 2.5rem;
  height: 2px;
  background: var(--accent);
  margin-bottom: var(--s-3);
}
.section-band__title {
  font-family: var(--font-display);
  font-size: var(--fs-3);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--fg-strong);
  margin: 0;
}

/* Deprecated: use .section-band. Kept for any external links / compat. */
.institution-section {
  font-size: var(--fs-1);
  font-weight: 650;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: var(--s-7) 0 var(--s-3);
  padding-bottom: var(--s-2);
  border-bottom: 1px solid var(--border);
}
.institution-section:first-of-type { margin-top: var(--s-6); }
.section-band + .term-section,
.institution-section + .term-section {
  border-top: none;
  padding-top: 0;
  margin-top: var(--s-5);
}

/* Term section on the institution page: full-width clickable header
 * + inline course grid underneath. Reuses .grid + .card.card--accent. */
.term-section { margin: var(--s-7) 0; }
.term-section + .term-section {
  border-top: 1px solid var(--border);
  padding-top: var(--s-6);
}

.term-section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-4);
  margin-bottom: var(--s-4);
}
.term-section__title {
  display: flex;
  flex-direction: column;
  gap: var(--s-1);
  text-decoration: none;
  color: inherit;
}
.term-section__eyebrow {
  font-family: var(--font-display);
  font-size: var(--fs--1);
  font-style: italic;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.02em;
  text-transform: none;
}
.term-section__title:hover { text-decoration: none; }
.term-section__title:hover .term-section__label { color: var(--link); }
.term-section__label {
  font-size: var(--fs-2);
  font-weight: 650;
  color: var(--fg-strong);
  letter-spacing: -0.01em;
  line-height: var(--lh-snug);
  transition: color var(--transition);
}
.term-section__meta {
  color: var(--muted);
  font-size: var(--fs--1);
  flex-shrink: 0;
}

.empty--inline {
  color: var(--muted);
  margin: 0;
  font-size: var(--fs--1);
}

/* ---------------------------------------------------------------------------
 * Admonitions / callouts
 * ---------------------------------------------------------------------------
 * Author writes:
 *   !!! example "Optional title"
 *       Body...
 *
 * Renders to:
 *   <div class="admonition example">
 *     <p class="admonition-title">Optional title</p>
 *     <p>Body...</p>
 *   </div>
 *
 * Each type pulls colors from --admon-{type}-fg / --admon-{type}-bg in
 * tokens.css. Add a new type by adding two CSS variables there + one block
 * here. Author markdown stays unchanged.
 *
 * Exception: `intuition` has no background token — it uses --intuition-fg
 * in tokens.css and overrides the base callout panel (see below).
 * --------------------------------------------------------------------------- */

.prose .admonition {
  margin: var(--s-5) 0;
  padding: var(--s-3) var(--s-5) var(--s-4);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--surface-2);
}

.prose .admonition > .admonition-title {
  font-family: var(--font-sans);
  font-weight: 650;
  font-size: var(--fs--1);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--s-2);
}

.prose .admonition > .admonition-title + * { margin-top: 0; }
.prose .admonition > *:last-child { margin-bottom: 0; }

/* Type variants — color binds to one CSS variable per type. */
.prose .admonition.example    { border-left-color: var(--admon-example-fg);    background: var(--admon-example-bg); }
.prose .admonition.example    > .admonition-title { color: var(--admon-example-fg); }

.prose .admonition.note       { border-left-color: var(--admon-note-fg);       background: var(--admon-note-bg); }
.prose .admonition.note       > .admonition-title { color: var(--admon-note-fg); }

.prose .admonition.tip        { border-left-color: var(--admon-tip-fg);        background: var(--admon-tip-bg); }
.prose .admonition.tip        > .admonition-title { color: var(--admon-tip-fg); }

.prose .admonition.warning    { border-left-color: var(--admon-warning-fg);    background: var(--admon-warning-bg); }
.prose .admonition.warning    > .admonition-title { color: var(--admon-warning-fg); }

.prose .admonition.danger     { border-left-color: var(--admon-danger-fg);     background: var(--admon-danger-bg); }
.prose .admonition.danger     > .admonition-title { color: var(--admon-danger-fg); }

.prose .admonition.definition { border-left-color: var(--admon-definition-fg); background: var(--admon-definition-bg); }
.prose .admonition.definition > .admonition-title { color: var(--admon-definition-fg); }

.prose .admonition.theorem    { border-left-color: var(--admon-theorem-fg);    background: var(--admon-theorem-bg); }
.prose .admonition.theorem    > .admonition-title { color: var(--admon-theorem-fg); }

/* Intuition — same admonition markdown syntax as callouts, but styled as
 * text-only: no tinted background, no left bar. Body + title use --intuition-fg
 * (warm amber). Use:  !!! intuition "Idea"  or  !!! intuition  (default title). */
.prose .admonition.intuition {
  background: transparent;
  border-left: none;
  border-radius: 0;
  padding: 0 0 var(--s-2);
  margin: var(--s-4) 0;
  color: var(--intuition-fg);
}
.prose .admonition.intuition > .admonition-title {
  color: var(--intuition-fg);
  text-transform: none;
  letter-spacing: 0.01em;
  font-size: var(--fs-0);
  font-weight: 650;
  margin-bottom: var(--s-2);
}
.prose .admonition.intuition .katex { color: inherit; }

/* Color the BODY math/text of "example" admonitions, so authors don't need
 * to wrap each formula in \excol. The math glyphs inherit from the wrapper. */
.prose .admonition.example,
.prose .admonition.example .katex { color: var(--admon-example-fg); }