/* ============================================================
   THE CSS CODEX — theme & editorial system
   Ink (dark, default) ⇄ Paper (light). Oxblood accent.
   ============================================================ */

/* Variable / feature-rich specimen fonts (fetched locally) so the font-*
   demos actually exercise real OpenType axes and features. RobotoFlex carries
   wght/wdth/opsz/slnt/GRAD axes; Inter carries numeric/ligature features. */
@font-face {
  font-family: "Codex Flex";
  src: url("assets/fonts/RobotoFlex.ttf") format("truetype");
  font-weight: 1 1000; font-stretch: 25% 151%; font-style: normal; font-display: block;
}
@font-face {
  font-family: "Codex Inter";
  src: url("assets/fonts/Inter.ttf") format("truetype");
  font-weight: 100 900; font-style: normal; font-display: block;
}
@font-face {
  font-family: "Codex Recursive";
  src: url("assets/fonts/Recursive.ttf") format("truetype");
  font-weight: 300 1000; font-style: normal; font-display: block;
}
/* CJK (east-asian / orientation / combine-upright), feature-rich serifs
   (discretionary ligatures, oldstyle figures, swashes, alternates) and a
   single-weight face (so font-synthesis has something to synthesize). */
@font-face {
  font-family: "Codex CJK";
  src: url("assets/fonts/NotoSansJP.ttf") format("truetype");
  font-weight: 100 900; font-display: block;
}
@font-face {
  font-family: "Codex Garamond";
  src: url("assets/fonts/EBGaramond.ttf") format("truetype");
  font-weight: 400 800; font-display: block;
}
@font-face {
  font-family: "Codex Cormorant";
  src: url("assets/fonts/Cormorant.ttf") format("truetype");
  font-weight: 300 700; font-display: block;
}
@font-face {
  font-family: "Codex Typewriter";
  src: url("assets/fonts/SpecialElite.ttf") format("truetype");
  font-weight: 400; font-display: block;
}
@font-face {  /* COLR color font with palettes — for font-palette */
  font-family: "Codex Spice";
  src: url("assets/fonts/BungeeSpice.ttf") format("truetype");
  font-weight: 400; font-display: block;
}
/* Named palettes so font-palette: --my-var (the generated <palette-identifier>)
   resolves to a visibly different colouring than normal/light/dark. */
@font-palette-values --my-var {
  font-family: "Codex Spice";
  override-colors: 0 #2f5fd0, 1 #6bbf59;
}
@font-palette-values --tag-a {
  font-family: "Codex Spice";
  override-colors: 0 #e0a13c, 1 #c5483c;
}

:root {
  /* ---- INK (dark observatory) : default ---- */
  --bg:      #0c0d10;
  --bg-2:    #101216;   /* panels / rail */
  --bg-3:    #15171c;   /* raised cards  */
  --glass:   #121419;   /* viewing glass surface */
  --ink:     #ece6d8;   /* bone-white text */
  --ink-2:   #b3aea2;   /* muted */
  --ink-3:   #7c786e;   /* faint / captions */
  --accent:  #c5483c;   /* luminous oxblood */
  --accent-soft: color-mix(in srgb, var(--accent) 16%, transparent);
  --accent-line: color-mix(in srgb, var(--accent) 38%, transparent);
  --line:    color-mix(in srgb, var(--ink) 13%, transparent);
  --line-2:  color-mix(in srgb, var(--ink) 7%, transparent);
  --line-strong: color-mix(in srgb, var(--ink) 22%, transparent);
  --shadow:  0 1px 0 color-mix(in srgb, var(--ink) 6%, transparent),
             0 18px 40px -24px rgba(0,0,0,0.7);
  --grid-dot: color-mix(in srgb, var(--ink) 9%, transparent);

  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans:  "Hanken Grotesk", system-ui, -apple-system, sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  --rail-w: 280px;
  --maxw: 1320px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: dark;
}

[data-theme="paper"] {
  --bg:      #f3efe4;
  --bg-2:    #f8f4ea;
  --bg-3:    #fffdf6;
  --glass:   #fbf8ef;
  --ink:     #1c1813;
  --ink-2:   #585347;
  --ink-3:   #8d877a;
  --accent:  #8c2a23;
  --accent-soft: color-mix(in srgb, var(--accent) 12%, transparent);
  --accent-line: color-mix(in srgb, var(--accent) 32%, transparent);
  --line:    color-mix(in srgb, var(--ink) 15%, transparent);
  --line-2:  color-mix(in srgb, var(--ink) 8%, transparent);
  --line-strong: color-mix(in srgb, var(--ink) 26%, transparent);
  --shadow:  0 1px 0 rgba(255,255,255,0.6),
             0 16px 36px -26px rgba(40,30,20,0.45);
  --grid-dot: color-mix(in srgb, var(--ink) 10%, transparent);
  color-scheme: light;
}

* { box-sizing: border-box; }

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

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 240ms var(--ease), color 240ms var(--ease);
}

::selection { background: var(--accent-soft); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 1px;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; color: inherit; cursor: pointer; }

.mono { font-family: var(--mono); }
.serif { font-family: var(--serif); }

/* ---------- App scaffold ---------- */
.app {
  display: grid;
  grid-template-columns: var(--rail-w) 1fr;
  min-height: 100vh;
  transition: grid-template-columns 280ms var(--ease);
}
.app.rail-collapsed { grid-template-columns: 0px 1fr; }

/* ---------- Family rail ---------- */
.rail {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow: hidden;
  background: var(--bg-2);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
}
.rail-head {
  padding: 22px 22px 16px;
  border-bottom: 1px solid var(--line);
}
.rail-mark {
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: -0.01em;
  line-height: 1.05;
  font-weight: 600;
}
.rail-mark em { color: var(--accent); font-style: italic; }
.rail-sub {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-top: 6px;
}
.rail-scroll { overflow-y: auto; flex: 1; padding: 10px 10px 40px; }
.rail-scroll::-webkit-scrollbar { width: 10px; }
.rail-scroll::-webkit-scrollbar-thumb {
  background: var(--line); border-radius: 10px;
  border: 3px solid var(--bg-2);
}

.rail-group-label {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 16px 12px 7px;
}
.rail-item {
  display: grid;
  grid-template-columns: 26px 1fr auto;
  align-items: center;
  gap: 9px;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 7px 12px;
  border-radius: 5px;
  color: var(--ink-2);
  font-size: 13px;
  transition: background 120ms var(--ease), color 120ms var(--ease);
}
.rail-item:hover { background: var(--bg-3); color: var(--ink); }
.rail-item.active { background: var(--accent-soft); color: var(--ink); }
.rail-item.active .rail-sigil { color: var(--accent); border-color: var(--accent-line); }
.rail-sigil {
  font-family: var(--mono);
  font-size: 9.5px;
  display: grid;
  place-items: center;
  width: 22px; height: 22px;
  border: 1px solid var(--line);
  border-radius: 3px;
  color: var(--ink-3);
  letter-spacing: 0;
}
.rail-count {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-3);
}

/* ---------- Top bar ---------- */
.main { min-width: 0; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: 14px;
  height: 58px;
  padding: 0 26px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.icon-btn {
  display: grid; place-items: center;
  width: 34px; height: 34px;
  background: none; border: 1px solid var(--line);
  border-radius: 6px; color: var(--ink-2);
  transition: all 140ms var(--ease);
}
.icon-btn:hover { color: var(--ink); border-color: var(--line-strong); background: var(--bg-3); }

.breadcrumb {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  display: flex; align-items: center; gap: 8px;
  flex: 1; min-width: 0;
}
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb .crumb-now { color: var(--ink); }
.breadcrumb .sep { opacity: 0.5; }

.search-trigger {
  display: flex; align-items: center; gap: 10px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 7px 10px 7px 12px;
  color: var(--ink-3);
  font-size: 13px;
  min-width: 230px;
  white-space: nowrap;
  transition: border-color 140ms var(--ease);
}
.search-trigger:hover { border-color: var(--line-strong); }
.search-trigger .kbd {
  margin-left: auto;
  font-family: var(--mono); font-size: 10.5px;
  border: 1px solid var(--line); border-radius: 4px;
  padding: 2px 6px; color: var(--ink-3);
}

.theme-toggle {
  display: flex; align-items: center; gap: 7px;
  font-family: var(--mono); font-size: 10.5px;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-3);
  white-space: nowrap; flex: none;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 8px 6px 12px;
  transition: all 140ms var(--ease);
}
.theme-toggle:hover { color: var(--ink); border-color: var(--line-strong); }
.theme-dot {
  width: 14px; height: 14px; border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: radial-gradient(circle at 32% 30%, var(--ink) 0 48%, transparent 49%);
}

/* ---------- Content canvas ---------- */
.canvas { padding: 0 26px 120px; }
.wrap { max-width: var(--maxw); margin: 0 auto; }

/* ---------- Frontispiece ---------- */
.masthead {
  padding: 70px 0 46px;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 56px;
  align-items: end;
}
.masthead .eyebrow {
  font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 22px;
}
.masthead h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(48px, 6vw, 88px);
  line-height: 0.96;
  letter-spacing: -0.025em;
  margin: 0;
}
.masthead h1 em { font-style: italic; color: var(--accent); }
.masthead .lede {
  font-family: var(--serif);
  font-size: 18px; line-height: 1.55;
  color: var(--ink-2);
  max-width: 46ch;
  margin-top: 26px;
}
.masthead-stats {
  display: flex; gap: 30px; margin-top: 30px;
  border-top: 1px solid var(--line); padding-top: 22px;
}
.stat .n { font-family: var(--serif); font-size: 30px; font-weight: 600; line-height: 1; }
.stat .l {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-3); margin-top: 7px;
}

/* hero specimen */
.hero-spec {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--glass);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.hero-spec-glass {
  height: 280px;
  display: grid; place-items: center;
  background-image: radial-gradient(var(--grid-dot) 1px, transparent 1px);
  background-size: 22px 22px;
  perspective: 900px;
  overflow: hidden;
  animation: heroDotDrift 24s linear infinite;   /* slow ambient drift of the dotted field */
}
.hero-card {
  width: 150px; height: 96px; border-radius: 8px;
  background: linear-gradient(140deg, var(--accent), color-mix(in srgb, var(--accent) 55%, #000));
  display: grid; place-items: center;
  color: #fff; font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  box-shadow: 0 30px 50px -20px color-mix(in srgb, var(--accent) 60%, transparent);
  transition: transform 1100ms var(--ease);
}
.hero-spec-foot {
  display: flex; align-items: center; justify-content: space-between;
  padding: 13px 16px; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 12px;
}
.hero-spec-foot .lbl { color: var(--ink-3); }
.hero-spec-foot .val { color: var(--accent); }
/* the rotating hero specimen renders the real demo glass inside the hero panel */
.hero-spec:hover { border-color: var(--accent-line); }
/* each rotation remounts the HeroSpec (keyed by prop), so this entrance replays
   every cycle — the specimen fades + lifts into the glass instead of hard-cutting. */
.hero-spec-glass .hero-spec-stage { grid-template-columns: 1fr; width: 100%; height: 100%; border: none; border-radius: 0; box-shadow: none; background: transparent; pointer-events: none; animation: heroSpecIn 720ms cubic-bezier(0.22, 1, 0.36, 1) both; }
.hero-spec-glass .hero-spec-stage .controls { display: none; }
.hero-spec-glass .hero-spec-stage .glass { min-height: 0; height: 100%; border-radius: 0; padding: 18px; background: transparent; }
.hero-spec-glass .hero-spec-stage .glass .xl-chip,
.hero-spec-glass .hero-spec-stage .glass .glass-label { display: none; }

/* taxonomy map */
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin: 56px 0 22px;
}
.section-head h2 {
  font-family: var(--serif); font-weight: 600;
  font-size: 26px; letter-spacing: -0.01em; margin: 0;
}
.section-head .meta {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--ink-3);
}
.taxo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(258px, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.family-card {
  position: relative;
  text-align: left;
  background: none;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 20px 20px 22px;
  min-height: 138px;
  display: flex; flex-direction: column;
  transition: background 160ms var(--ease);
}
.family-card:hover { background: var(--bg-2); }
.family-card.is-focus::after {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
  background: var(--accent);
}
.family-card .fc-top { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.fc-sigil {
  font-family: var(--mono); font-size: 10px; color: var(--ink-3);
  border: 1px solid var(--line); border-radius: 3px;
  width: 26px; height: 26px; display: grid; place-items: center;
}
.family-card:hover .fc-sigil { color: var(--accent); border-color: var(--accent-line); }
.fc-count { margin-left: auto; font-family: var(--mono); font-size: 10.5px; color: var(--ink-3); }
.family-card h3 {
  font-family: var(--serif); font-weight: 600; font-size: 18px;
  letter-spacing: -0.01em; margin: 0 0 7px; line-height: 1.1;
}
.family-card .fc-blurb { font-size: 12.5px; color: var(--ink-2); line-height: 1.45; }
.fc-tag {
  margin-top: auto; padding-top: 12px;
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--accent);
}

/* ---------- Family view ---------- */
.family-intro { padding: 52px 0 34px; border-bottom: 1px solid var(--line); }
.family-intro .eyebrow {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--ink-3); margin-bottom: 16px;
  display: flex; gap: 12px; align-items: center;
}
.family-intro .eyebrow b { color: var(--accent); font-weight: 500; }
.family-intro h1 {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(34px, 4.4vw, 56px); letter-spacing: -0.022em;
  margin: 0; line-height: 1; max-width: 18ch;
}
.family-intro .blurb {
  font-family: var(--serif); font-size: 17px; line-height: 1.6;
  color: var(--ink-2); max-width: 60ch; margin-top: 22px;
}

.specimen-index { padding: 30px 0 0; }
.spec-row {
  display: grid;
  grid-template-columns: 64px 1.1fr 2fr auto;
  gap: 18px; align-items: center;
  width: 100%; text-align: left; background: none;
  border: none; border-bottom: 1px solid var(--line);
  padding: 16px 8px; color: var(--ink);
  transition: background 130ms var(--ease), padding 130ms var(--ease);
}
.spec-row:hover { background: var(--bg-2); padding-left: 16px; }
.spec-row .sr-num { font-family: var(--mono); font-size: 11px; color: var(--ink-3); }
.spec-row .sr-name { font-family: var(--mono); font-size: 15px; color: var(--ink); }
.spec-row:hover .sr-name { color: var(--accent); }
.spec-row .sr-desc { font-size: 13px; color: var(--ink-2); }
.spec-row .sr-go { font-family: var(--mono); font-size: 11px; color: var(--ink-3); }

/* ---------- Featured specimen (clickable to its prop page) ---------- */
.meta-link { background: none; border: none; font: inherit; color: var(--accent); cursor: pointer; padding: 0; }
.meta-link:hover { text-decoration: underline; }
.featured-stage { border-radius: 10px; transition: box-shadow .15s ease, transform .15s ease; }
.featured-stage:hover { box-shadow: var(--shadow); transform: translateY(-1px); }

/* ---------- Live specimen grid (family pages) ---------- */
.live-grid {
  display: grid; gap: 16px; padding: 22px 0 0;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
}
.live-card {
  display: flex; flex-direction: column; text-align: left; padding: 0; font: inherit;
  background: var(--bg-2); border: 1px solid var(--line); border-radius: 12px;
  overflow: hidden; cursor: pointer; transition: border-color .15s ease, transform .15s ease, box-shadow .15s ease;
}
.live-card:hover { border-color: var(--accent-line); transform: translateY(-2px); box-shadow: var(--shadow); }
/* render the real demo, but as a single compact glass (no control rail), and let
   the card swallow the click so the whole tile opens the playground. */
.live-card .live-card-stage { grid-template-columns: 1fr; border: none; border-radius: 0; box-shadow: none; background: transparent; pointer-events: none; }
.live-card .live-card-stage .controls { display: none; }
.live-card .live-card-stage .glass { min-height: 188px; padding: 16px; border-radius: 0; }
.live-card .live-card-stage .glass .xl-chip { display: none; }   /* hide replay/scroll buttons in the preview */
.live-card-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 9px 13px; border-top: 1px solid var(--line);
}
.live-card .lcf-name { font-family: var(--mono); font-size: 13px; color: var(--ink); display: inline-flex; align-items: center; gap: 5px; }
.live-card:hover .lcf-name { color: var(--accent); }
.live-card .lcf-go { color: var(--ink-3); display: inline-flex; }

/* ---------- Specimen view ---------- */
.specimen { padding: 40px 0 0; display: grid; gap: 26px; }
.spec-header { display: flex; gap: 20px; align-items: flex-start; }
.spec-plate {
  flex: none;
  font-family: var(--mono); font-size: 11px; color: var(--ink-3);
  border: 1px solid var(--line); border-radius: 5px;
  padding: 10px 12px; text-align: center; line-height: 1.4;
}
.spec-plate b { color: var(--accent); display: block; font-size: 15px; font-weight: 500; }
.spec-title h1 {
  font-family: var(--mono); font-weight: 500;
  font-size: clamp(30px, 4vw, 46px); letter-spacing: -0.02em; margin: 0; line-height: 1;
}
.spec-title .desc {
  font-family: var(--serif); font-size: 17px; line-height: 1.55;
  color: var(--ink-2); margin-top: 14px; max-width: 62ch;
}
.spec-title .desc a, .mdn-note a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }

/* MDN status notecards — experimental / deprecated / non-standard / warning */
.mdn-notes { display: flex; flex-direction: column; gap: 8px; margin-top: 16px; max-width: 64ch; }
.mdn-note {
  font-family: var(--sans); font-size: 13px; line-height: 1.5; color: var(--ink-2);
  border: 1px solid var(--line); border-left-width: 3px; border-radius: 8px;
  padding: 9px 13px; background: var(--bg-3);
}
.mdn-note strong { color: var(--ink); font-weight: 700; }
.mdn-note.experimental { border-left-color: #6f74e0; }
.mdn-note.experimental strong { color: #9aa0ff; }
.mdn-note.deprecated   { border-left-color: #d98b2b; }
.mdn-note.deprecated strong { color: #e0a13c; }
.mdn-note.nonstandard  { border-left-color: #c5483c; }
.mdn-note.nonstandard strong { color: #e06a5e; }
.mdn-note.warning      { border-left-color: #c5483c; background: color-mix(in srgb, var(--accent) 8%, var(--bg-3)); }
.mdn-note.unimpl {
  margin-top: 14px; max-width: 64ch; border-left-color: #caa23a;
  background: color-mix(in srgb, #caa23a 7%, var(--bg-3));
}
.mdn-note.unimpl strong { color: #e0b94a; }
.mdn-note.unimpl .unimpl-vals { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.mdn-note.unimpl .unimpl-vals code {
  font-family: var(--mono); font-size: 11.5px; color: var(--ink);
  background: var(--bg-2); border: 1px solid var(--line); border-radius: 5px;
  padding: 2px 7px; cursor: help;
}
.mdn-note.warning strong { color: var(--accent); }

/* status icon badges next to a property name (everywhere it appears) */
.status-badges { display: inline-flex; gap: 4px; margin-left: 0.55em; vertical-align: middle; white-space: nowrap; }
.status-badge { display: inline-flex; align-items: center; font-size: 0.82em; line-height: 1; cursor: help; }
.status-badge.experimental { color: #9aa0ff; }
.status-badge.deprecated   { color: #e0a13c; }
.status-badge.nonstandard  { color: #e06a5e; }
h1 .status-badges { margin-left: 0.45em; gap: 6px; }
h1 .status-badge { font-size: 0.34em; }
.spec-meta-tags { display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap; }
.pill {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--ink-2);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px;
}
.pill.accent { color: var(--accent); border-color: var(--accent-line); }

/* layout: glass + controls */
.spec-stage {
  display: grid; grid-template-columns: 1.55fr 1fr; gap: 0;
  border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
  background: var(--bg-2); box-shadow: var(--shadow);
}
.glass {
  position: relative;
  min-height: 380px;
  background: var(--glass);
  background-image: radial-gradient(var(--grid-dot) 1px, transparent 1px);
  background-size: 24px 24px;
  display: grid; place-items: center;
  padding: 30px; overflow: hidden;
}
.glass-label {
  position: absolute; top: 12px; left: 14px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-3);
}
.controls {
  border-left: 1px solid var(--line);
  padding: 20px; display: flex; flex-direction: column; gap: 18px;
  background: var(--bg-2);
  /* bound the control list so long value sets scroll instead of stretching
     the whole specimen page taller and taller */
  min-height: 0; max-height: 440px; overflow-y: auto;
}
.controls::-webkit-scrollbar { width: 8px; }
.controls::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 4px; }
.controls::-webkit-scrollbar-track { background: transparent; }
.controls-label {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-3);
}

/* value controls */
.chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chip {
  font-family: var(--mono); font-size: 12px;
  background: var(--bg-3); border: 1px solid var(--line);
  color: var(--ink-2); border-radius: 6px; padding: 7px 11px;
  transition: all 130ms var(--ease);
}
.chip:hover { color: var(--ink); border-color: var(--line-strong); }
.chip.active {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
[data-theme="paper"] .chip.active { color: #fff; }

.ctrl-row { display: flex; flex-direction: column; gap: 9px; }
.ctrl-head {
  display: flex; align-items: baseline; justify-content: space-between;
}
.ctrl-head .name { font-family: var(--mono); font-size: 12px; color: var(--ink-2); }
.ctrl-head .num { font-family: var(--mono); font-size: 12px; color: var(--accent); }

input[type="range"].slider {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 3px; border-radius: 3px;
  background: var(--line-strong); outline: none; margin: 6px 0;
}
input[type="range"].slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--bg-2);
  box-shadow: 0 0 0 1px var(--accent-line); cursor: grab;
  transition: transform 120ms var(--ease);
}
input[type="range"].slider::-webkit-slider-thumb:active { transform: scale(1.18); cursor: grabbing; }
input[type="range"].slider::-moz-range-thumb {
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); border: 2px solid var(--bg-2); cursor: grab;
}

.unit-select, .num-input {
  font-family: var(--mono); font-size: 12px;
  background: var(--bg-3); border: 1px solid var(--line);
  color: var(--ink); border-radius: 5px; padding: 6px 8px;
}
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.seg button {
  font-family: var(--mono); font-size: 11px; background: var(--bg-3);
  border: none; border-right: 1px solid var(--line); padding: 6px 10px; color: var(--ink-2);
}
.seg button:last-child { border-right: none; }
.seg button.active { background: var(--accent); color: #fff; }

/* dial */
.dial-wrap { display: flex; align-items: center; gap: 16px; }
.dial {
  width: 92px; height: 92px; border-radius: 50%;
  border: 1px solid var(--line-strong); position: relative;
  background: var(--bg-3); flex: none; cursor: grab;
  touch-action: none;
}
.dial:active { cursor: grabbing; }
.dial .tick {
  position: absolute; top: 6px; left: 50%; width: 2px; height: 16px;
  background: var(--accent); border-radius: 2px; transform-origin: 50% 40px;
  margin-left: -1px;
}
.dial .hub {
  position: absolute; inset: 0; margin: auto; width: 6px; height: 6px;
  border-radius: 50%; background: var(--ink-3);
}
.dial-read { font-family: var(--mono); font-size: 22px; color: var(--ink); }
.dial-read span { color: var(--ink-3); font-size: 14px; }

/* color controls */
.swatch-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 6px; }
.swatch {
  aspect-ratio: 1; border-radius: 5px; border: 1px solid var(--line);
  cursor: pointer; transition: transform 120ms var(--ease);
}
.swatch:hover { transform: scale(1.08); }
.swatch.active { outline: 2px solid var(--accent); outline-offset: 2px; }

/* difference strip */
.diff {
  border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
  background: var(--bg-2);
}
.diff-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--line);
}
.diff-head .t { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-3); }
.diff-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}
.diff-cell {
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 16px; display: flex; flex-direction: column; gap: 12px;
  cursor: pointer; transition: background 130ms var(--ease);
}
.diff-cell:hover { background: var(--bg-3); }
.diff-cell.active { background: var(--accent-soft); }
.diff-mini {
  height: 92px; border-radius: 6px; background: var(--glass);
  border: 1px solid var(--line-2); display: grid; place-items: center;
  overflow: hidden; position: relative;
}
.diff-cap { font-family: var(--mono); font-size: 11px; color: var(--ink-2); }
.diff-cell.active .diff-cap { color: var(--accent); }

/* code block */
.codeblock {
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--bg-3); overflow: hidden;
}
.code-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px; border-bottom: 1px solid var(--line);
}
.code-head .t { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); }
.copy-btn {
  display: flex; align-items: center; gap: 7px;
  font-family: var(--mono); font-size: 11px; color: var(--ink-2);
  border: 1px solid var(--line); border-radius: 6px; padding: 5px 9px;
  background: none; transition: all 130ms var(--ease);
}
.copy-btn:hover { color: var(--ink); border-color: var(--line-strong); }
.code-body {
  font-family: var(--mono); font-size: 13.5px; line-height: 1.7;
  padding: 16px 18px; overflow-x: auto; white-space: pre;
}
.tok-sel { color: var(--accent); }
.tok-prop { color: var(--ink); }
.tok-val { color: var(--ink-2); }
.tok-val.hi { color: var(--accent); background: var(--accent-soft); border-radius: 3px; padding: 0 3px; }
.tok-punc { color: var(--ink-3); }

/* ---------- Live Playground (editable specimen CSS) ---------- */
.play-hint { font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em; color: var(--ink-3); opacity: 0.8; }
.playground .code-head { gap: 12px; }
.play-block { border-top: 1px solid var(--line); }
.play-block:first-of-type { border-top: none; }
.play-block.primary { background: color-mix(in srgb, var(--accent) 4%, transparent); }
.play-block-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 14px 6px; font-family: var(--mono); font-size: 12px;
}
.play-actions { display: flex; gap: 7px; }
.play-actions .copy-btn { padding: 3px 9px; font-size: 10.5px; }
.play-code { cursor: text; padding-top: 4px; }
.play-code:hover { background: color-mix(in srgb, var(--ink) 3%, transparent); }
/* the demonstrated property, emphasised within the real applied block */
.tok-prop.tested { color: var(--accent); font-weight: 600; }
.play-edit {
  display: block; width: 100%; box-sizing: border-box; resize: vertical;
  font-family: var(--mono); font-size: 13px; line-height: 1.6;
  color: var(--ink); background: color-mix(in srgb, var(--accent) 6%, var(--bg-2));
  border: none; border-top: 1px solid var(--accent-line);
  padding: 12px 16px; outline: none;
}
.play-edit:focus { background: color-mix(in srgb, var(--accent) 8%, var(--bg-2)); }

/* grammar drawer */
.grammar { border: 1px solid var(--line); border-radius: 10px; background: var(--bg-2); overflow: hidden; }
.grammar-toggle {
  display: flex; align-items: center; gap: 12px; width: 100%;
  background: none; border: none; padding: 15px 18px; text-align: left;
}
.grammar-toggle .gt-title { font-family: var(--serif); font-size: 16px; font-weight: 600; }
.grammar-toggle .gt-sub { font-family: var(--mono); font-size: 11px; color: var(--ink-3); margin-left: auto; }
.grammar-toggle .chev { transition: transform 200ms var(--ease); color: var(--ink-3); }
.grammar.open .chev { transform: rotate(90deg); }
.grammar-body {
  display: grid; grid-template-rows: 0fr;
  transition: grid-template-rows 240ms var(--ease);
}
.grammar.open .grammar-body { grid-template-rows: 1fr; }
.grammar-body > div { overflow: hidden; }
.grammar-inner { padding: 4px 18px 20px; display: grid; gap: 16px; }
.gram-field .gf-label {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-3); margin-bottom: 7px;
}
.gram-field pre {
  font-family: var(--mono); font-size: 12.5px; line-height: 1.65;
  margin: 0; white-space: pre-wrap; color: var(--ink);
  background: var(--bg-3); border: 1px solid var(--line-2);
  border-radius: 7px; padding: 12px 14px;
}
.gram-types { display: flex; gap: 8px; flex-wrap: wrap; }

/* cross-links */
.xlinks { display: flex; flex-direction: column; gap: 12px; }
.xlinks .xl-label {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-3);
}
.xl-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.xl-chip {
  font-family: var(--mono); font-size: 12px; color: var(--ink-2);
  border: 1px solid var(--line); border-radius: 6px; padding: 6px 11px;
  transition: all 130ms var(--ease);
}
.xl-chip:hover { color: var(--accent); border-color: var(--accent-line); }

/* ---------- Command palette ---------- */
.palette-scrim {
  position: fixed; inset: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 55%, rgba(0,0,0,0.6));
  backdrop-filter: blur(6px);
  display: grid; align-items: start; justify-items: center;
  padding-top: 12vh;
  animation: fade 160ms var(--ease);
}
@keyframes fade { from { opacity: 0; } }
/* hero specimen entrance (replays each rotation) + ambient dotted-field drift */
@keyframes heroSpecIn {
  from { opacity: 0; transform: translateY(12px) scale(0.955); filter: blur(2px); }
  to   { opacity: 1; transform: none; filter: none; }
}
@keyframes heroDotDrift { to { background-position: 44px 44px; } }
.palette {
  width: min(640px, 92vw);
  background: var(--bg-2); border: 1px solid var(--line-strong);
  border-radius: 12px; overflow: hidden;
  box-shadow: 0 40px 90px -30px rgba(0,0,0,0.7);
  animation: pop 200ms var(--ease-out);
}
@keyframes pop { from { transform: translateY(-10px) scale(0.985); opacity: 0; } }
.palette-input {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 18px; border-bottom: 1px solid var(--line);
}
.palette-input input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--ink); font-family: var(--sans); font-size: 17px;
}
.palette-input input::placeholder { color: var(--ink-3); }
.palette-results { max-height: 52vh; overflow-y: auto; padding: 8px; }
.pal-group {
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--ink-3); padding: 12px 12px 6px;
}
.pal-item {
  display: grid; grid-template-columns: 24px 1fr auto; align-items: center; gap: 12px;
  width: 100%; text-align: left; background: none; border: none;
  padding: 10px 12px; border-radius: 7px; color: var(--ink-2);
}
.pal-item.sel { background: var(--accent-soft); color: var(--ink); }
.pal-item .pi-sig {
  font-family: var(--mono); font-size: 9px; color: var(--ink-3);
  border: 1px solid var(--line); border-radius: 3px; width: 22px; height: 22px;
  display: grid; place-items: center;
}
.pal-item.sel .pi-sig { color: var(--accent); border-color: var(--accent-line); }
.pal-item .pi-name { font-family: var(--mono); font-size: 14px; }
.pal-item .pi-fam { font-size: 11px; color: var(--ink-3); }
.pal-empty { padding: 36px; text-align: center; color: var(--ink-3); font-family: var(--mono); font-size: 13px; }
.palette-foot {
  display: flex; gap: 16px; padding: 10px 16px; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: 10.5px; color: var(--ink-3);
}
.palette-foot .k { border: 1px solid var(--line); border-radius: 3px; padding: 1px 5px; margin-right: 5px; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%);
  z-index: 200; background: var(--ink); color: var(--bg);
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em;
  padding: 11px 18px; border-radius: 8px;
  box-shadow: 0 18px 40px -16px rgba(0,0,0,0.5);
  animation: toastin 220ms var(--ease-out);
  display: flex; align-items: center; gap: 9px;
}
@keyframes toastin { from { transform: translateX(-50%) translateY(12px); opacity: 0; } }

/* placeholder / generic */
.ph-box {
  width: 180px; height: 120px; border-radius: 8px;
  background: var(--accent); display: grid; place-items: center;
  color: #fff; font-family: var(--mono); font-size: 11px;
  box-shadow: 0 24px 44px -22px color-mix(in srgb, var(--accent) 60%, transparent);
}
.ph-text {
  max-width: 30ch; font-family: var(--serif); font-size: 19px; line-height: 1.5; color: var(--ink);
}

.empty-note {
  border: 1px dashed var(--line-strong); border-radius: 10px;
  padding: 30px; text-align: center; color: var(--ink-3);
  font-family: var(--mono); font-size: 13px; line-height: 1.7;
}

/* ---------- responsive ---------- */
.rail-scrim { display: none; }
@media (max-width: 920px) {
  .app, .app.rail-collapsed { grid-template-columns: 1fr; }
  .rail {
    position: fixed; z-index: 60; width: 280px; left: 0; top: 0;
    transform: translateX(-100%); transition: transform 280ms var(--ease);
  }
  .app:not(.rail-collapsed) .rail { transform: translateX(0); }
  .app:not(.rail-collapsed) .rail-scrim {
    display: block; position: fixed; inset: 0; z-index: 55;
    background: rgba(0,0,0,0.5);
  }
  .masthead { grid-template-columns: 1fr; gap: 36px; padding-top: 40px; }
  .spec-stage { grid-template-columns: 1fr; }
  .controls { border-left: none; border-top: 1px solid var(--line); }
  .search-trigger { min-width: 0; }
  .search-trigger .st-label { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ── Embed view (screenshots): preview + controls only, fixed-size, framed.
   The stage never grows; instead the controls column scrolls to fit. ── */
.embed-root {
  box-sizing: border-box;
  width: 100vw; min-height: 100vh;
  display: grid; place-items: center;
  padding: 22px; background: var(--bg);
}
.embed-root .spec-stage {
  width: 100%; max-width: 976px; height: 600px;
}
.embed-root .glass { min-height: 0; height: 600px; }
.embed-root .controls {
  height: 600px; overflow-y: auto; min-height: 0;
}
/* slim scrollbar so it doesn't dominate the frame */
.embed-root .controls::-webkit-scrollbar { width: 8px; }
.embed-root .controls::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 4px; }

/* ── Paged-media demo (printed to PDF by the screenshot driver) ───────────── */
.paged-doc {
  width: 100%; font-family: var(--serif); font-size: 12px;
  line-height: 1.55; color: var(--ink-2); text-align: justify;
}
.paged-doc h3 { font-size: 13px; color: var(--accent); font-weight: 600; }
.paged-section {
  border-left: 2px solid var(--accent-line);
  padding-left: 10px; background: var(--accent-soft);
}
/* On screen the paged demo is just a tall scrollable preview. */
.embed-root .paged-glass { overflow: hidden; }
.embed-root .paged-glass .paged-doc { height: 560px; overflow: hidden; }

/* When the driver prints to PDF (print media) the document must flow full-height
   onto real pages: drop every fixed height/clip and the surrounding UI chrome so
   only the white, paginated document remains — page breaks then become visible. */
@media print {
  html, body { background: #fff !important; }
  .rail, .controls, .control-bar, .glass-label, .codex-nav, .crumbs { display: none !important; }
  .embed-root, .embed-root .spec-stage, .embed-root .glass, .embed-root .paged-glass {
    display: block !important; height: auto !important; min-height: 0 !important;
    max-height: none !important; overflow: visible !important;
    background: #fff !important; border: none !important; box-shadow: none !important;
    padding: 0 !important; margin: 0 !important;
  }
  .embed-root .paged-glass .paged-doc { height: auto !important; overflow: visible !important; }
  .paged-doc, .paged-doc * { color: #16181d !important; }
  .paged-section { background: #f3ece0 !important; border-color: #c5483c !important; }
  .paged-doc h3 { color: #c5483c !important; }
  @page { size: A5; margin: 14mm; }
}