/* ==========================================================================
   wmux-orchestrator — marketing site
   Editorial · Terminal-native · Motion-first · Dramatic
   ========================================================================== */

/* ---------- 1. FONTS (self-hosted) --------------------------------------- */

@font-face {
  font-family: 'Geist Mono';
  src: url('./assets/fonts/GeistMono-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Geist Mono';
  src: url('./assets/fonts/GeistMono-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Geist Mono';
  src: url('./assets/fonts/GeistMono-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Geist Mono';
  src: url('./assets/fonts/GeistMono-Bold.woff2') format('woff2');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---------- 2. TOKENS ----------------------------------------------------- */

:root {
  /* Palette (LOCKED) */
  --bg: #070707;
  --bg-elev: #0d0d0d;
  --bg-elev-2: #141414;
  --border: #1f1f1f;
  --border-strong: #2a2a2a;
  --text: #f2f2f2;
  --text-dim: #a0a0a0;
  --text-muted: #6a6a6a;
  --text-faint: #3a3a3a;
  --accent: #F5B301;
  --accent-dim: #8a6400;
  --success: #4ade80;
  --danger: #ef4444;

  /* Typography */
  --font-mono: 'Geist Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;

  /* Scale (dramatic — 10 to 160) */
  --fs-micro: 10px;
  --fs-xs: 11px;
  --fs-sm: 13px;
  --fs-base: 15px;
  --fs-md: 18px;
  --fs-lg: 22px;
  --fs-xl: 32px;
  --fs-2xl: 48px;
  --fs-3xl: 72px;
  --fs-4xl: clamp(56px, 11vw, 152px);

  /* Spacing */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 48px;
  --s-8: 64px;
  --s-9: 96px;
  --s-10: 128px;
  --s-11: 192px;

  /* Grid */
  --max-w: 1400px;
  --gutter: clamp(20px, 4vw, 64px);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 160ms;
  --dur: 340ms;
  --dur-slow: 680ms;

  /* Ambient hooks (driven by motion.js / ambient.js) */
  --scroll: 0;
  --progress: 0;
  --mouse-x: 50vw;
  --mouse-y: 50vh;
}

/* ---------- 3. RESET & BASE ---------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--fs-base);
  line-height: 1.65;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-feature-settings: "ss01", "ss02", "cv11";
  position: relative;
  overflow-x: hidden;
}

/* Subtle scanline grid — sets the terminal vibe immediately */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(transparent 95%, rgba(245, 179, 1, 0.02) 95%),
    linear-gradient(90deg, transparent 95%, rgba(255, 255, 255, 0.015) 95%);
  background-size: 100% 4px, 40px 100%;
  pointer-events: none;
  z-index: 0;
  mix-blend-mode: screen;
}

img, svg { display: block; max-width: 100%; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

code, pre, kbd {
  font-family: var(--font-mono);
  font-variant-ligatures: none;
}

ins, del {
  text-decoration: none;
}

ul, ol { list-style: none; }

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 1px;
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: var(--border);
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-dim); }
html { scrollbar-color: var(--border) var(--bg); scrollbar-width: thin; }

/* ---------- 4. SECTION PRIMITIVES ---------------------------------------- */

.section {
  padding-block: var(--s-10);
  position: relative;
  border-top: 1px solid var(--border);
}
.section:first-of-type { border-top: 0; }
.section--hero { border-top: 0; }

.section__inner {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
  position: relative;
  z-index: 1;
}

.section__eyebrow {
  font-size: var(--fs-micro);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
}
.section__eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--text-faint);
  display: inline-block;
}

.section__title {
  font-size: clamp(40px, 6vw, 88px);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin-top: var(--s-5);
  margin-bottom: var(--s-8);
  max-width: 22ch;
}

.section__lede {
  font-size: var(--fs-md);
  color: var(--text-dim);
  max-width: 62ch;
  line-height: 1.65;
  margin-bottom: var(--s-8);
}

.section__fine {
  margin-top: var(--s-6);
  font-size: var(--fs-xs);
  color: var(--text-faint);
  max-width: 60ch;
  letter-spacing: 0.01em;
}

/* ---------- 5. AMBIENT OVERLAYS ------------------------------------------ */

/* Scroll-progress bar — motion.js writes --scroll: 0..1 on <html> */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(var(--scroll, 0));
  transform-origin: left;
  z-index: 1000;
  pointer-events: none;
  will-change: transform;
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.9'/></svg>");
}

/* Cursor glow — ambient.js updates --mouse-x / --mouse-y */
.cursor-glow {
  position: fixed;
  top: var(--mouse-y, 50vh);
  left: var(--mouse-x, 50vw);
  width: 520px;
  height: 520px;
  margin: -260px 0 0 -260px;
  background: radial-gradient(
    circle at center,
    rgba(245, 179, 1, 0.08) 0%,
    rgba(245, 179, 1, 0.025) 35%,
    transparent 65%
  );
  pointer-events: none;
  z-index: 2;
  mix-blend-mode: plus-lighter;
  transition: top 280ms var(--ease), left 280ms var(--ease);
  will-change: top, left;
}

/* Reveal-on-view utility — motion.js toggles .is-visible */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
.reveal[data-delay="1"] { transition-delay: 80ms; }
.reveal[data-delay="2"] { transition-delay: 160ms; }
.reveal[data-delay="3"] { transition-delay: 240ms; }
.reveal[data-delay="4"] { transition-delay: 320ms; }

/* ---------- 6. SITE HEADER ----------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 7, 7, 0.72);
  backdrop-filter: blur(10px) saturate(140%);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--s-6);
  padding: var(--s-4) var(--gutter);
  font-size: var(--fs-xs);
}

.site-header__mark {
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}
.site-header__mark__text { color: var(--text); }
.site-header__mark__cursor {
  display: inline-block;
  width: 7px;
  height: 12px;
  background: var(--accent);
  margin-left: 4px;
  transform: translateY(1px);
  text-indent: -9999px;
  overflow: hidden;
  animation: blink 1.1s steps(1, end) infinite;
}

.site-header__nav {
  display: flex;
  gap: var(--s-6);
  justify-content: center;
  font-size: var(--fs-micro);
}
.site-header__link {
  position: relative;
  padding-block: 4px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.site-header__link:hover { color: var(--text); }
.site-header__link::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transition: right var(--dur) var(--ease);
}
.site-header__link:hover::after,
.site-header__link.is-active::after { right: 0; }
.site-header__link.is-active { color: var(--text); }

.site-header__status {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  color: var(--text-muted);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.site-header__dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(245, 179, 1, 0.6);
  animation: pulse-amber 1.8s var(--ease) infinite;
}
.site-header__status__label { color: var(--text-muted); }

@media (max-width: 900px) {
  .site-header { grid-template-columns: auto 1fr; }
  .site-header__nav { display: none; }
}

/* ---------- 7. HERO ------------------------------------------------------- */

#hero {
  position: relative;
  padding-block: var(--s-11) var(--s-10);
  border-top: 0;
  overflow: hidden;
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: var(--s-8);
  align-items: end;
}
.hero__inner > .hero__eyebrow,
.hero__inner > .hero__title,
.hero__inner > .hero__lede,
.hero__inner > .hero__meta { grid-column: 1; }
.hero__inner > .hero__panes {
  grid-column: 2;
  grid-row: 1 / span 4;
  align-self: stretch;
}

.hero__eyebrow {
  font-size: var(--fs-micro);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  padding: 6px 10px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  margin-bottom: var(--s-7);
}
.hero__eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--accent);
  display: inline-block;
  animation: pulse-amber 2s var(--ease) infinite;
}

.hero__title {
  font-size: var(--fs-4xl);
  font-weight: 600;
  line-height: 0.95;
  letter-spacing: -0.045em;
  color: var(--text);
  max-width: 14ch;
  margin-bottom: var(--s-7);
}
.hero__title__line { display: block; }

.hero__lede {
  font-size: var(--fs-md);
  line-height: 1.65;
  color: var(--text-dim);
  max-width: 52ch;
  margin-bottom: var(--s-7);
}
.hero__lede strong { color: var(--text); font-weight: 500; }

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-5);
  align-items: center;
  font-size: var(--fs-sm);
}
.hero__install {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  font-weight: 500;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.hero__install::before {
  content: "$";
  color: var(--accent);
  font-weight: 600;
}
.hero__install:hover {
  border-color: var(--accent);
  background: var(--bg-elev-2);
}

.hero__gh {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  color: var(--text-dim);
  padding: var(--s-3) 0;
  border-bottom: 1px solid var(--border);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.hero__gh:hover {
  color: var(--text);
  border-color: var(--accent);
}
.hero__gh__arrow {
  display: inline-block;
  margin-left: 6px;
  color: var(--text-faint);
  font-size: 0.95em;
  transition: transform var(--dur) var(--ease), color var(--dur) var(--ease);
}
.hero__gh:hover .hero__gh__arrow {
  transform: translate(4px, -4px);
  color: var(--accent);
}

/* hero__panes — Wave 2 mount, hero-panes.js will populate.
   Empty-but-elegant placeholder via pseudo-elements; JS-injected
   children naturally cover the placeholder. */
.hero__panes {
  position: relative;
  min-height: 380px;
  border: 1px solid var(--border-strong);
  background: var(--bg-elev);
  border-radius: 10px;
  overflow: hidden;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.025),
    inset 0 -40px 80px rgba(0, 0, 0, 0.35);
}
.hero__panes::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(245, 179, 1, 0.025) 100%);
  pointer-events: none;
}
.hero__panes:empty::after {
  content: "wmux panes";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-micro);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
  pointer-events: none;
}

@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; gap: var(--s-7); }
  .hero__inner > .hero__panes { grid-column: 1; grid-row: auto; min-height: 320px; }
}
@media (max-width: 600px) {
  #hero { padding-block: var(--s-9) var(--s-8); }
  .hero__meta { flex-direction: column; align-items: stretch; }
  .hero__install, .hero__gh { width: 100%; justify-content: flex-start; }
  .hero__panes { min-height: 220px; }
}

/* ---------- 8. WAVE-SIM (JS-rendered by wave-sim.js) --------------------- */

#wave-sim { background: var(--bg); }
#wave-sim-root { margin-top: var(--s-8); }

.wsim {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 620px;
}

.wsim__toolbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  padding: var(--s-3) var(--s-5);
  border-bottom: 1px solid var(--border);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  gap: var(--s-5);
}
.wsim__title {
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.01em;
  text-transform: none;
  font-size: var(--fs-sm);
}
.wsim__title::before {
  content: "~/project";
  color: var(--text-muted);
  font-weight: 400;
  margin-right: var(--s-3);
  padding-right: var(--s-3);
  border-right: 1px solid var(--border);
}
.wsim__status {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  justify-self: center;
}
.wsim__status .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
}
.wsim[data-running="true"] .wsim__status .dot {
  background: var(--accent);
  animation: pulse-amber 1.6s var(--ease) infinite;
}

.wsim__controls { display: inline-flex; gap: var(--s-2); }
.wsim__play,
.wsim__reset {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 7px 14px;
  border: 1px solid var(--border);
  background: var(--bg-elev-2);
  color: var(--text-dim);
  transition: all var(--dur) var(--ease);
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
}
.wsim__play::before { content: "▶"; color: var(--accent); font-size: 10px; }
.wsim__reset::before { content: "↺"; color: var(--text-muted); }
.wsim__play:hover,
.wsim__reset:hover {
  border-color: var(--accent);
  color: var(--text);
  background: var(--bg-elev);
}
.wsim__play[data-playing="true"]::before { content: "❚❚"; }
.wsim__play.is-hint {
  animation: pulse-amber 2.8s var(--ease) infinite;
  border-color: var(--accent);
  color: var(--accent);
}

.wsim__body,
.wsim__stage {
  padding: var(--s-6) var(--s-5);
  display: grid;
  gap: var(--s-5);
  align-content: start;
  position: relative;
}

.wsim__lane {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: var(--s-5);
  align-items: stretch;
}
.wsim__lane-label {
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  padding-top: var(--s-3);
  display: flex;
  flex-direction: column;
  gap: 2px;
  border-right: 1px dashed var(--border);
  padding-right: var(--s-4);
}
.wsim__lane-label strong {
  color: var(--text);
  font-size: var(--fs-lg);
  font-weight: 600;
  letter-spacing: -0.02em;
  text-transform: none;
  line-height: 1;
}

.wsim__panes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: var(--s-3);
}

.wsim__pane {
  position: relative;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-left: 2px solid var(--border);
  padding: var(--s-4);
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: var(--s-3);
  min-height: 150px;
  transition:
    border-color var(--dur) var(--ease),
    background var(--dur) var(--ease),
    opacity var(--dur) var(--ease);
}
.wsim__pane[data-state="pending"] { opacity: 0.45; filter: grayscale(1); }
.wsim__pane[data-state="running"] { border-left-color: var(--accent); }
.wsim__pane[data-state="running"]::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(245, 179, 1, 0.06) 50%,
    transparent 100%
  );
  background-size: 100% 200%;
  animation: scanline 2.4s linear infinite;
  mix-blend-mode: screen;
}
.wsim__pane[data-state="done"] { border-left-color: var(--accent-dim); }
.wsim__pane[data-state="failed"] { border-left-color: var(--danger); }

.wsim__pane__head,
.wsim__pane__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
}
.wsim__pane__id {
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.wsim__pane[data-state="running"] .wsim__pane__id,
.wsim__pane[data-state="done"] .wsim__pane__id { color: var(--accent); }
.wsim__pane__state {
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}
.wsim__pane[data-state="done"] .wsim__pane__state::before { content: "✓ "; color: var(--accent); }
.wsim__pane[data-state="failed"] .wsim__pane__state::before { content: "✗ "; color: var(--danger); }

.wsim__pane__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-faint);
  display: inline-block;
  flex-shrink: 0;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.wsim__pane[data-state="running"] .wsim__pane__dot {
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(245, 179, 1, 0.6);
  animation: pulse-amber 1.4s var(--ease) infinite;
}
.wsim__pane[data-state="done"] .wsim__pane__dot { background: var(--accent-dim); animation: none; }
.wsim__pane[data-state="failed"] .wsim__pane__dot { background: var(--danger); animation: none; }

.wsim__pane__label {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text);
  line-height: 1.35;
}

.wsim__pane__log {
  font-size: var(--fs-micro);
  color: var(--text-muted);
  line-height: 1.5;
  display: grid;
  gap: 2px;
  font-family: var(--font-mono);
  overflow: hidden;
  max-height: 48px;
}
.wsim__pane__logline {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.wsim__pane__logline::before { content: "› "; color: var(--text-faint); }
.wsim__pane[data-state="running"] .wsim__pane__logline:last-child { color: var(--text-dim); }

.wsim__pane__meta {
  display: flex;
  justify-content: space-between;
  gap: var(--s-3);
  font-size: var(--fs-micro);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-top: 1px dashed var(--border);
  padding-top: var(--s-2);
}
.wsim__pane__tooluse,
.wsim__pane__time {
  font-variant-numeric: tabular-nums;
}
.wsim__pane[data-state="running"] .wsim__pane__tooluse,
.wsim__pane[data-state="done"] .wsim__pane__tooluse { color: var(--accent); }

.wsim__arrow {
  justify-self: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--text-faint);
  font-size: var(--fs-micro);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  gap: 2px;
  padding-block: 2px;
}
.wsim__arrow::before {
  content: "";
  width: 1px;
  height: 16px;
  background: var(--border-strong);
}
.wsim__arrow::after { content: "▼"; font-size: 9px; color: var(--text-muted); }
.wsim[data-wave="2"] .wsim__arrow,
.wsim[data-wave="3"] .wsim__arrow { color: var(--accent); }
.wsim[data-wave="2"] .wsim__arrow::after,
.wsim[data-wave="3"] .wsim__arrow::after { color: var(--accent); }

.wsim__review {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-left: 2px solid var(--border);
  padding: var(--s-4) var(--s-5);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--s-4);
  align-items: center;
}
.wsim__review[data-state="running"] { border-left-color: var(--accent); }
.wsim__review[data-state="done"] {
  border-left-color: var(--accent);
  background: linear-gradient(90deg, rgba(245, 179, 1, 0.06) 0%, transparent 60%);
}
.wsim__review[data-state="hidden"] { opacity: 0.3; filter: grayscale(1); }
.wsim__review[data-state="hidden"] .wsim__review__body { display: none; }
.wsim__review__id {
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.wsim__review__label { font-size: var(--fs-sm); color: var(--text); }
.wsim__review__meta {
  font-size: var(--fs-micro);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.wsim__review__body {
  display: grid;
  gap: 4px;
  font-size: var(--fs-micro);
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-top: var(--s-3);
  padding-top: var(--s-3);
  border-top: 1px dashed var(--border);
  min-height: 1em;
  grid-column: 1 / -1;
}

.wsim__foot {
  padding: var(--s-3) var(--s-5);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-size: var(--fs-micro);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.wsim__foot strong { color: var(--text); font-weight: 600; }

@media (max-width: 780px) {
  .wsim__lane { grid-template-columns: 1fr; }
  .wsim__lane-label {
    border-right: none;
    border-bottom: 1px dashed var(--border);
    padding-right: 0;
    padding-bottom: var(--s-3);
    flex-direction: row;
    align-items: baseline;
    gap: var(--s-3);
  }
}
@media (max-width: 600px) {
  .wsim__body,
  .wsim__stage { padding: var(--s-4); }
}

/* ---------- 9. MENTAL MODEL ---------------------------------------------- */

.section--model { background: var(--bg); }

.model {
  margin-top: var(--s-7);
  padding: var(--s-9) var(--s-6);
  border: 1px solid var(--border);
  background: var(--bg-elev);
  position: relative;
  overflow: hidden;
}
.model::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(245, 179, 1, 0.05) 0%, transparent 60%);
  pointer-events: none;
}

.model__stage {
  position: relative;
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: var(--s-7);
  max-width: 1100px;
  margin: 0 auto;
}

.model__prompt {
  font-size: var(--fs-md);
  font-weight: 500;
  color: var(--text);
  padding: var(--s-3) var(--s-5);
  border: 1px solid var(--accent);
  background: var(--bg-elev-2);
  letter-spacing: 0.02em;
  opacity: 0;
  animation: model-fade 6s var(--ease) infinite;
  animation-delay: 0s;
}

.model__arrow {
  font-size: var(--fs-2xl);
  color: var(--accent);
  font-weight: 400;
  line-height: 1;
  opacity: 0;
  animation: model-fade 6s var(--ease) infinite;
  animation-delay: 1s;
}

.model__waves {
  display: grid;
  gap: var(--s-4);
}

.model__wave {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  position: relative;
  padding-left: var(--s-6);
}
.model__wave::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: var(--s-4);
  height: 1px;
  background: var(--text-faint);
}

.model__agent {
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: var(--s-2) var(--s-5) var(--s-2) var(--s-4);
  border: 1px solid var(--border-strong);
  background: var(--bg-elev-2);
  color: var(--text-dim);
  position: relative;
  opacity: 0;
  animation: model-fade 6s var(--ease) infinite;
}
.model__agent::after {
  content: "";
  position: absolute;
  top: 50%;
  right: var(--s-2);
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateY(-50%);
  opacity: 0;
  animation: model-pulse 6s var(--ease) infinite;
}

.model__wave[data-wave="1"] .model__agent[data-agent="a"],
.model__wave[data-wave="1"] .model__agent[data-agent="a"]::after { animation-delay: 1.5s; }
.model__wave[data-wave="1"] .model__agent[data-agent="b"],
.model__wave[data-wave="1"] .model__agent[data-agent="b"]::after { animation-delay: 2s; }
.model__wave[data-wave="1"] .model__agent[data-agent="c"],
.model__wave[data-wave="1"] .model__agent[data-agent="c"]::after { animation-delay: 2.5s; }

.model__wave[data-wave="2"] .model__agent[data-agent="d"],
.model__wave[data-wave="2"] .model__agent[data-agent="d"]::after { animation-delay: 3.5s; }
.model__wave[data-wave="2"] .model__agent[data-agent="e"],
.model__wave[data-wave="2"] .model__agent[data-agent="e"]::after { animation-delay: 4s; }

.model__wave[data-wave="r"] .model__agent[data-agent="r"] {
  animation-delay: 5s;
  border-color: var(--accent);
  color: var(--text);
}
.model__wave[data-wave="r"] .model__agent[data-agent="r"]::after {
  animation-delay: 5s;
}

@keyframes model-fade {
  0%   { opacity: 0; transform: translateY(4px); }
  18%  { opacity: 1; transform: none; }
  92%  { opacity: 1; transform: none; }
  100% { opacity: 0; transform: translateY(-2px); }
}

@keyframes model-pulse {
  0%, 28%   { opacity: 0; box-shadow: 0 0 0 0 rgba(245, 179, 1, 0); }
  32%       { opacity: 1; box-shadow: 0 0 0 0 rgba(245, 179, 1, 0.55); }
  55%       { opacity: 1; box-shadow: 0 0 0 6px rgba(245, 179, 1, 0); }
  88%       { opacity: 1; }
  100%      { opacity: 0; }
}

@media (max-width: 900px) {
  .model { padding: var(--s-7) var(--s-5); }
  .model__stage { grid-template-columns: 1fr; gap: var(--s-5); justify-items: start; }
  .model__arrow { transform: rotate(90deg); }
}

/* ---------- 10. HOW IT WORKS --------------------------------------------- */

#how-it-works { padding-block: var(--s-11); }

.how__steps {
  display: grid;
  gap: var(--s-6);
  margin-top: var(--s-7);
}

.how__step {
  display: grid;
  gap: var(--s-2);
  padding-bottom: var(--s-5);
  border-bottom: 1px solid var(--border);
  opacity: 0.55;
  transition: opacity var(--dur) var(--ease);
}
.how__step:last-child { border-bottom: 0; }
.how__step[data-active] { opacity: 1; }

.how__step__label {
  font-size: var(--fs-micro);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: var(--s-2);
}
.how__step[data-active] .how__step__label { color: var(--accent); }

.how__step__title {
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: var(--s-2);
}

.how__step__body {
  font-size: var(--fs-sm);
  color: var(--text-dim);
  line-height: 1.65;
  max-width: 62ch;
}

.how__diagram {
  margin-top: var(--s-8);
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  padding: var(--s-6) var(--s-5);
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--s-3);
  overflow: hidden;
}
.how__diagram::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  transform-origin: top;
  transform: scaleY(var(--progress, 0));
  transition: transform var(--dur) var(--ease);
  pointer-events: none;
}

.how__wave {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: var(--s-4) var(--s-3);
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  font-size: var(--fs-micro);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0.45;
  transition: opacity var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
  text-align: center;
}
.how__wave[data-active] {
  opacity: 1;
  border-color: var(--accent);
  color: var(--text);
}

.how__wave__label {
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.how__wave[data-active] .how__wave__label { color: var(--accent); }

@media (max-width: 1024px) {
  .how__diagram { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 600px) {
  .how__diagram { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- 11. FILE ZONES ----------------------------------------------- */

.zones {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--s-5);
  margin-top: var(--s-7);
}

.zones__file {
  position: relative;
  display: grid;
  gap: var(--s-2);
  padding: var(--s-5);
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-left: 2px solid var(--border);
  font-size: var(--fs-sm);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.zones__file[data-state="writing"] {
  border-left-color: var(--accent);
  background: linear-gradient(90deg, rgba(245, 179, 1, 0.06), transparent 70%);
}
.zones__file[data-state="writing"]::after {
  content: "WRITING";
  position: absolute;
  top: var(--s-3);
  right: var(--s-4);
  font-size: var(--fs-micro);
  letter-spacing: 0.12em;
  color: var(--accent);
  font-weight: 600;
}
.zones__file[data-state="pending"] {
  border-left-color: var(--border-strong);
  color: var(--text-dim);
}
.zones__file[data-state="pending"]::after {
  content: "PENDING";
  position: absolute;
  top: var(--s-3);
  right: var(--s-4);
  font-size: var(--fs-micro);
  letter-spacing: 0.12em;
  color: var(--text-faint);
}

.zones__file__owner {
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}
.zones__file[data-state="pending"] .zones__file__owner { color: var(--text-muted); }

.zones__file__path {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--fs-md);
  color: var(--text);
  letter-spacing: 0;
}

.zones__file__note {
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

/* ---------- 12. COMPARISON · DIFF VIEW ----------------------------------- */

.diff {
  margin-top: var(--s-7);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  padding: var(--s-5) var(--s-4);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  line-height: 1.85;
  overflow-x: auto;
  white-space: normal;
  color: var(--text-dim);
  border-radius: 4px;
}

.diff__row {
  display: block;
  white-space: pre;
  padding: 2px var(--s-3);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.diff__sign {
  display: inline-block;
  width: 2ch;
  color: var(--text-muted);
}

.diff__row--ctx { color: var(--text-dim); }

.diff__row--add {
  color: var(--success);
  background: rgba(74, 222, 128, 0.06);
}
.diff__row--add .diff__sign { color: var(--success); }
.diff__row--add:hover {
  transform: translateX(4px);
  background: rgba(74, 222, 128, 0.12);
}

.diff__row--del {
  color: var(--danger);
  background: rgba(239, 68, 68, 0.06);
}
.diff__row--del .diff__sign { color: var(--danger); }
.diff__row--del:hover {
  transform: translateX(4px);
  background: rgba(239, 68, 68, 0.12);
}

/* ---------- 13. QUICKSTART ----------------------------------------------- */

.qs__term {
  margin-top: var(--s-7);
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  display: grid;
  grid-template-rows: auto 1fr;
  font-size: var(--fs-sm);
  overflow: hidden;
}
.qs__term__bar {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  border-bottom: 1px solid var(--border);
  font-size: var(--fs-micro);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.qs__term__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-faint);
  display: inline-block;
}
.qs__term__dot--a { background: var(--text-faint); }
.qs__term__dot--b { background: var(--text-muted); }
.qs__term__dot--c { background: var(--accent-dim); }
.qs__term__title {
  font-size: var(--fs-micro);
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-left: var(--s-2);
}

.qs__copy {
  margin-left: auto;
  font-size: var(--fs-micro);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 4px 10px;
  background: transparent;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.qs__term:hover .qs__copy,
.qs__copy:focus-visible { opacity: 1; }
.qs__copy:hover { color: var(--accent); border-color: var(--accent); }
.qs__copy[data-copied="true"] { color: var(--accent); border-color: var(--accent); }

.qs__term__body {
  padding: var(--s-5);
  display: grid;
  gap: 4px;
  font-size: var(--fs-sm);
  line-height: 1.7;
}

.qs__line {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--s-3);
}
.qs__line--out {
  grid-template-columns: 1fr;
  color: var(--text-muted);
  padding-left: 24px;
  font-size: var(--fs-xs);
}
.qs__prompt {
  color: var(--accent);
  font-weight: 600;
}
.qs__cmd {
  color: var(--text);
  font-weight: 500;
}
.qs__cmd--blink::after {
  content: "_";
  display: inline-block;
  margin-left: 2px;
  color: var(--accent);
  animation: blink 1.05s steps(1, end) infinite;
}

/* ---------- 14. ARCHITECTURE --------------------------------------------- */

.arch {
  display: grid;
  margin-top: var(--s-7);
  border: 1px solid var(--border);
  background: var(--bg-elev);
}

.arch__layer {
  display: block;
  padding: var(--s-7) var(--s-6);
  border-bottom: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  position: relative;
  transition: background var(--dur) var(--ease);
}
.arch__layer:last-child { border-bottom: 0; }
.arch__layer:hover { background: var(--bg-elev-2); }

.arch__layer__label {
  font-size: var(--fs-micro);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: var(--s-3);
}
.arch__layer__title {
  font-size: var(--fs-2xl);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1;
  color: var(--text);
  margin-bottom: var(--s-4);
  max-width: 26ch;
}
.arch__layer__desc {
  font-size: var(--fs-md);
  color: var(--text-dim);
  line-height: 1.65;
  max-width: 72ch;
  margin-bottom: var(--s-5);
}

.arch__layer__items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
}
.arch__layer__items li {
  font-size: var(--fs-xs);
  padding: 5px 10px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  color: var(--text-dim);
  letter-spacing: 0;
}
.arch__layer__items li::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--accent);
  margin-right: 6px;
  transform: translateY(-2px);
}

.arch__footnote {
  margin-top: var(--s-6);
  padding-top: var(--s-5);
  border-top: 1px dashed var(--border);
  font-size: var(--fs-sm);
  color: var(--text-muted);
  letter-spacing: 0.01em;
  font-style: italic;
}

@media (max-width: 780px) {
  .arch__layer { padding: var(--s-5); }
  .arch__layer__title { font-size: var(--fs-xl); }
}

/* ---------- 15. LINKS ----------------------------------------------------- */

#links { padding-block: var(--s-10) var(--s-9); }

.links__row {
  display: grid;
  margin-top: var(--s-7);
  border-top: 1px solid var(--border);
}

.links__item {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: 0 var(--s-5);
  align-items: center;
  padding: var(--s-6) var(--s-3);
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), padding var(--dur) var(--ease);
  position: relative;
}
.links__item:hover {
  color: var(--text);
  background: linear-gradient(90deg, rgba(245, 179, 1, 0.04), transparent 60%);
  padding-left: var(--s-6);
}

.links__label {
  font-size: clamp(24px, 3.2vw, 42px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text);
  display: block;
  grid-column: 1;
  grid-row: 1;
}
.links__sub {
  font-size: var(--fs-micro);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  display: block;
  margin-top: 4px;
  grid-column: 1;
  grid-row: 2;
}
.links__arrow {
  font-size: 32px;
  color: var(--text-faint);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
}
.links__item:hover .links__arrow {
  color: var(--accent);
  transform: translate(6px, -6px);
}

/* ---------- 16. FOOTER --------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--s-6) 0;
  background: var(--bg);
}
.site-footer__inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-inline: var(--gutter);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  justify-content: center;
  align-items: center;
  font-size: var(--fs-micro);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.site-footer__item {
  display: inline-flex;
  align-items: baseline;
  gap: var(--s-2);
}
.site-footer__sep {
  color: var(--text-faint);
  user-select: none;
}
.site-footer__link {
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  padding-bottom: 1px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.site-footer__link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- 17. ACTIVITY RAIL (ambient.js populates) --------------------- */

.activity-rail {
  position: fixed;
  top: 80px;
  right: 0;
  bottom: 0;
  width: 240px;
  border-left: 1px solid var(--border);
  background: linear-gradient(270deg, rgba(7, 7, 7, 0.6) 20%, transparent 100%);
  padding: var(--s-4) var(--s-4) var(--s-6);
  overflow: hidden;
  pointer-events: none;
  z-index: 40;
  display: none;
}
@media (min-width: 1280px) {
  .activity-rail { display: block; }
}
.activity-rail::before {
  content: "ACTIVITY";
  display: block;
  font-size: var(--fs-micro);
  letter-spacing: 0.14em;
  color: var(--text-faint);
  margin-bottom: var(--s-3);
  padding-bottom: var(--s-2);
  border-bottom: 1px dashed var(--border);
}
.activity-rail::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  bottom: 0;
  height: 90px;
  background: linear-gradient(0deg, var(--bg) 10%, transparent 100%);
  pointer-events: none;
}
.activity-rail__line {
  font-size: var(--fs-micro);
  color: var(--text-muted);
  letter-spacing: 0;
  padding-block: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: 0;
  animation: rail-in var(--dur-slow) var(--ease-out) forwards;
}
.activity-rail__line .t { color: var(--text-faint); margin-right: 6px; }
.activity-rail__line .id { color: var(--accent); font-weight: 600; margin-right: 4px; }

/* ---------- 18. KEYFRAMES ------------------------------------------------ */

@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

@keyframes pulse-amber {
  0%   { box-shadow: 0 0 0 0 rgba(245, 179, 1, 0.55); transform: scale(1); }
  70%  { box-shadow: 0 0 0 9px rgba(245, 179, 1, 0); transform: scale(1); }
  100% { box-shadow: 0 0 0 0 rgba(245, 179, 1, 0); transform: scale(1); }
}

@keyframes scanline {
  0%   { background-position: 0 -100%; }
  100% { background-position: 0 200%; }
}

@keyframes type-in {
  from { width: 0; }
  to   { width: 100%; }
}

@keyframes rail-in {
  from { opacity: 0; transform: translateX(10px); }
  to   { opacity: 1; transform: none; }
}

@keyframes drift {
  from { transform: translateY(0); }
  to   { transform: translateY(-6px); }
}

/* ---------- 19. REDUCED MOTION ------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .cursor-glow,
  .wsim__pane[data-state="running"]::before,
  .grain {
    display: none !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
  .model__prompt,
  .model__arrow,
  .model__agent { opacity: 1 !important; }
  .model__agent::after { opacity: 1 !important; }
}

/* ---------- 20. SMALL SCREENS -------------------------------------------- */

@media (max-width: 600px) {
  :root { --gutter: 20px; }
  .section { padding-block: var(--s-9); }
  .section__title { font-size: clamp(34px, 10vw, 56px); }
  .arch__layer__title { font-size: var(--fs-xl); }
  .hero__title { font-size: clamp(44px, 14vw, 82px); }
}

/* ---------- 21. LANGUAGE SELECTOR ---------------------------------------- */

#lang-selector {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.site-footer__lang { margin-left: auto; }

.lang-trigger {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 5px 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: border-color var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease);
}
.lang-trigger:hover {
  border-color: var(--border-strong);
  color: var(--text-dim);
}
.lang-trigger svg {
  opacity: 0.6;
  transition: opacity var(--dur-fast) var(--ease);
}
.lang-trigger:hover svg { opacity: 1; }

.lang-dropdown {
  display: none;
  position: absolute;
  bottom: calc(100% + 8px);
  inset-inline-end: 0;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  padding: 6px;
  min-width: 180px;
  max-height: 320px;
  overflow-y: auto;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
  z-index: 200;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.lang-dropdown.open { display: block; }

.lang-option {
  display: block;
  width: 100%;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  padding: 7px 12px;
  cursor: pointer;
  text-align: start;
  border-radius: 3px;
  transition: background var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease);
}
.lang-option:hover {
  background: var(--bg-elev-2);
  color: var(--text);
}
.lang-option[aria-current="true"] {
  color: var(--accent);
}

.lang-dropdown::-webkit-scrollbar { width: 4px; }
.lang-dropdown::-webkit-scrollbar-track { background: transparent; }
.lang-dropdown::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 2px;
}

/* RTL overrides — Arabic */
html[dir="rtl"] .site-header__mark__cursor,
html[dir="rtl"] .site-footer__lang { margin-left: 0; margin-right: auto; }
html[dir="rtl"] .hero__gh__arrow,
html[dir="rtl"] .links__arrow { transform: scaleX(-1); }
html[dir="rtl"] .model__arrow { transform: scaleX(-1); }
html[dir="rtl"] .diff { direction: ltr; } /* diff stays LTR — it's code-like */
html[dir="rtl"] .qs__term__body,
html[dir="rtl"] .qs__term__bar { direction: ltr; }
html[dir="rtl"] .hero__install,
html[dir="rtl"] code { direction: ltr; unicode-bidi: embed; }

/* ---------- 22. PRINT ---------------------------------------------------- */

@media print {
  body::before, .grain, .cursor-glow, .activity-rail, .scroll-progress { display: none !important; }
  #lang-selector { display: none !important; }
  .section { break-inside: avoid; padding-block: var(--s-6); }
}