/* ============================================================
   CONVERGENOMICS — shared design system (ds.css)
   Cinematic / museum-grade gold-on-black editorial.
   Playfair Display (display) · Crimson Pro (reading) · IBM Plex Mono (data/labels)
   ============================================================ */

:root {
  --gold: #c8a96e;
  --gold-bright: #e7cf9b;
  --gold-dim: #97824f;
  --ink: #ece5d6;
  --ink-soft: #b8b09e;
  --bg: #080706;
  --bg2: #0c0a08;
  --bg3: #110e0b;
  --bg4: #16120d;
  --line: #2a2520;
  --line-soft: #1a1713;
  --muted: #8c8475;
  --dim: #5f594f;
  --danger: #c8485c;

  /* 12-discipline palette */
  --c-earth: #c89b6e;
  --c-genetics: #c8485c;
  --c-archaeology: #d97e3a;
  --c-linguistics: #5cb8d8;
  --c-scripture: #c8a96e;
  --c-historio: #d4c789;
  --c-cartography: #5b9bc8;
  --c-oral: #b07ad6;
  --c-architecture: #9bab4a;
  --c-law: #7e9bb8;
  --c-psychology: #d06cb6;
  --c-political: #6eb87e;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-serif: 'Crimson Pro', Georgia, serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, Menlo, monospace;

  --maxw: 1180px;
  --measure: 680px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --nav-h: 62px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; scroll-padding-top: 80px; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.62;
  overflow-x: hidden;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  pointer-events: none; z-index: 9999;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
::selection { background: rgba(200, 169, 110, 0.28); color: #fff; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.mono {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.66rem;
  font-weight: 500;
}
.gold { color: var(--gold); }
.italic { font-style: italic; font-family: var(--font-display); }

/* ---------------- NAV ---------------- */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 500;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px clamp(20px, 4vw, 48px);
  border-bottom: 1px solid transparent;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease), backdrop-filter 0.4s, padding 0.4s var(--ease);
}
.site-nav.scrolled {
  background: rgba(8, 7, 6, 0.84);
  backdrop-filter: blur(16px) saturate(1.1);
  border-bottom: 1px solid var(--line-soft);
  padding-top: 12px; padding-bottom: 12px;
}
.site-nav .brand {
  font-family: var(--font-display);
  font-size: 1.12rem; color: var(--gold);
  display: flex; align-items: baseline; gap: 11px; white-space: nowrap;
}
.site-nav .brand .tld {
  font-family: var(--font-mono); font-size: 0.52rem;
  letter-spacing: 0.3em; color: var(--muted); text-transform: uppercase;
}
.site-nav .links { display: flex; gap: clamp(12px, 1.6vw, 26px); align-items: center; }
.site-nav .links a {
  font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-soft);
  transition: color 0.2s; position: relative; padding-bottom: 3px;
}
.site-nav .links a::after {
  content: ''; position: absolute; left: 0; bottom: 0; width: 0; height: 1px;
  background: var(--gold); transition: width 0.25s var(--ease);
}
.site-nav .links a:hover, .site-nav .links a.active { color: var(--gold-bright); }
.site-nav .links a.active::after, .site-nav .links a:hover::after { width: 100%; }
.nav-toggle { display: none; }
@media (max-width: 1040px) {
  .site-nav .links {
    position: fixed; inset: 0 0 0 auto; width: min(78vw, 320px);
    flex-direction: column; align-items: flex-start; justify-content: center;
    gap: 22px; padding: 40px; background: rgba(8,7,6,0.97);
    backdrop-filter: blur(20px); border-left: 1px solid var(--line);
    transform: translateX(100%); transition: transform 0.4s var(--ease);
  }
  .site-nav.open .links { transform: none; }
  .site-nav .links a { font-size: 0.82rem; }
  .nav-toggle {
    display: flex; flex-direction: column; gap: 5px; background: none; border: 0;
    cursor: pointer; z-index: 600; padding: 6px;
  }
  .nav-toggle span { width: 24px; height: 1.5px; background: var(--gold); transition: 0.3s; }
  .site-nav.open .nav-toggle span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .site-nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
  .site-nav.open .nav-toggle span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
}

/* ---------------- BUTTONS ---------------- */
.btn {
  font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.16em;
  font-size: 0.68rem; padding: 14px 24px; border: 1px solid var(--gold-dim);
  color: var(--gold-bright); background: transparent; cursor: pointer;
  transition: all 0.25s var(--ease); display: inline-flex; align-items: center; gap: 10px;
}
.btn:hover { background: var(--gold); color: #100c06; border-color: var(--gold); }
.btn.solid { background: var(--gold); color: #100c06; border-color: var(--gold); }
.btn.solid:hover { background: var(--gold-bright); border-color: var(--gold-bright); }
.btn .arr { transition: transform 0.25s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }
.btn.sm { padding: 9px 16px; font-size: 0.6rem; }

/* ---------------- SECTION SCAFFOLD ---------------- */
.section { padding: clamp(64px, 9vh, 130px) clamp(20px, 4vw, 48px); position: relative; }
.wrap { max-width: var(--maxw); margin: 0 auto; }
.wrap-narrow { max-width: 860px; margin: 0 auto; }

.kicker { color: var(--gold); margin-bottom: 20px; display: flex; align-items: center; gap: 13px; }
.kicker::before { content: ''; width: 30px; height: 1px; background: var(--gold-dim); }
.kicker.center { justify-content: center; }

h2.head {
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(2rem, 4.2vw, 3.4rem); line-height: 1.08;
  letter-spacing: -0.01em; color: var(--ink); text-wrap: balance;
}
h2.head em { font-style: italic; color: var(--gold); }
.lede-text { font-size: 1.16rem; line-height: 1.6; color: var(--ink-soft); max-width: var(--measure); }

/* ---------------- INTERIOR PAGE HERO ---------------- */
.page-hero {
  position: relative; padding: calc(var(--nav-h) + clamp(56px, 12vh, 130px)) clamp(20px, 4vw, 48px) clamp(48px, 8vh, 90px);
  border-bottom: 1px solid var(--line-soft); overflow: hidden; isolation: isolate;
}
.page-hero::after {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(120% 140% at 0% 0%, rgba(200,169,110,0.07), rgba(8,7,6,0) 50%);
}
.page-hero .ph-inner { max-width: var(--maxw); margin: 0 auto; }
.page-hero h1 {
  font-family: var(--font-display); font-weight: 400;
  font-size: clamp(2.6rem, 6.4vw, 5.4rem); line-height: 0.98;
  letter-spacing: -0.018em; color: var(--ink); margin-bottom: 22px; text-wrap: balance;
}
.page-hero h1 em { font-style: italic; color: var(--gold); }
.page-hero .ph-lede { font-size: clamp(1.05rem, 1.6vw, 1.32rem); color: var(--ink-soft); max-width: 660px; line-height: 1.58; }
.page-hero .ph-stats { display: flex; gap: clamp(24px, 4vw, 54px); margin-top: 40px; flex-wrap: wrap; }
.ph-stat .n { font-family: var(--font-display); font-size: 2.2rem; color: var(--gold); line-height: 1; }
.ph-stat .l { font-family: var(--font-mono); font-size: 0.58rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); margin-top: 8px; }

/* ---------------- DISCIPLINE TAGS ---------------- */
.dtag {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: 0.56rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-soft);
  padding: 4px 10px 4px 8px; border: 1px solid var(--line); border-radius: 2px;
  white-space: nowrap;
}
.dtag .dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; box-shadow: 0 0 8px currentColor; }

/* ---------------- FOOTER ---------------- */
.site-foot { background: var(--bg); border-top: 1px solid var(--line-soft); padding: 64px clamp(20px,4vw,48px) 44px; }
.site-foot .fi { max-width: var(--maxw); margin: 0 auto; display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.site-foot .fbrand { font-family: var(--font-display); font-size: 2rem; color: var(--gold); margin-bottom: 12px; }
.site-foot .ftag { color: var(--muted); font-size: 0.92rem; max-width: 360px; }
.site-foot h4 { font-family: var(--font-mono); font-size: 0.58rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--gold-dim); margin-bottom: 16px; }
.site-foot .fcol a { display: block; color: var(--ink-soft); font-size: 0.95rem; padding: 5px 0; transition: color 0.2s; }
.site-foot .fcol a:hover { color: var(--gold-bright); }
.site-foot .fbar { max-width: var(--maxw); margin: 40px auto 0; padding-top: 22px; border-top: 1px solid var(--line-soft); display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; font-family: var(--font-mono); font-size: 0.56rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--dim); }
@media (max-width: 760px) { .site-foot .fi { grid-template-columns: 1fr; gap: 28px; } }

/* ---------------- REVEAL ---------------- */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
.reveal.d4 { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  .reveal { opacity: 1; transform: none; }
}