/* ==========================================================================
   MolBench — shared stylesheet
   Hand-crafted, self-contained (no external fonts/JS/CDN). Light + dark mode.
   ========================================================================== */

:root {
  color-scheme: light dark;

  /* Type */
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  /* Light palette */
  --bg: #f7f8fa;
  --bg-elev: #ffffff;
  --bg-sunken: #f0f2f5;
  --fg: #1a1f29;
  --fg-muted: #5b6573;
  --fg-faint: #8b95a3;
  --border: #e2e6ec;
  --border-strong: #ccd2db;

  /* Restrained accent — a calm scientific teal */
  --accent: #0e7c86;
  --accent-strong: #0a5d65;
  --accent-soft: #e3f3f4;
  --accent-fg: #ffffff;

  --gold: #b8860b;
  --gold-soft: #fbf3df;

  --good: #1a7f48;
  --good-soft: #e4f4ea;
  --warn: #9a6a00;
  --warn-soft: #fbf0d9;
  --bad: #b4302a;
  --bad-soft: #fce8e7;

  --shadow-sm: 0 1px 2px rgba(20, 28, 40, 0.06),
    0 1px 1px rgba(20, 28, 40, 0.04);
  --shadow-md: 0 2px 8px rgba(20, 28, 40, 0.07),
    0 8px 24px rgba(20, 28, 40, 0.06);

  --radius: 10px;
  --radius-sm: 6px;
  --maxw: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --bg-elev: #161b22;
    --bg-sunken: #11161d;
    --fg: #e6e9ee;
    --fg-muted: #9aa4b2;
    --fg-faint: #6b7585;
    --border: #232a34;
    --border-strong: #313a47;

    --accent: #3fb6c0;
    --accent-strong: #5fc9d2;
    --accent-soft: #10282b;
    --accent-fg: #06151a;

    --gold: #e0b341;
    --gold-soft: #2a2410;

    --good: #4cc185;
    --good-soft: #112a1d;
    --warn: #e0b341;
    --warn-soft: #2a2410;
    --bad: #f0857f;
    --bad-soft: #2c1413;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 2px 10px rgba(0, 0, 0, 0.5),
      0 10px 30px rgba(0, 0, 0, 0.45);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

code, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  padding: 0.1em 0.4em;
  border-radius: var(--radius-sm);
}

.tnum { font-variant-numeric: tabular-nums; }

/* ---------- Layout ---------- */
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

section { margin-top: 3.25rem; }

/* ---------- Site header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg-elev) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 58px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--fg);
}
.brand:hover { text-decoration: none; }
.brand .mark {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  display: inline-grid;
  place-items: center;
  color: var(--accent-fg);
  font-size: 0.95rem;
  font-weight: 800;
  box-shadow: var(--shadow-sm);
}
.nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.nav a {
  color: var(--fg-muted);
  font-weight: 500;
  font-size: 0.93rem;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-sm);
}
.nav a:hover {
  color: var(--fg);
  background: var(--bg-sunken);
  text-decoration: none;
}
.nav a.active {
  color: var(--accent);
  background: var(--accent-soft);
}
.nav a.gh { color: var(--fg-muted); }

/* ---------- Hero ---------- */
.hero {
  padding: 3.5rem 0 1rem;
}
.eyebrow {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.3rem 0.6rem;
  border-radius: 100px;
  margin-bottom: 1rem;
}
.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(2.2rem, 5vw, 3.1rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 800;
}
.hero .pitch {
  margin: 0;
  max-width: 46rem;
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--fg-muted);
  line-height: 1.5;
}

/* ---------- Stat callouts ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1rem;
  margin-top: 2.25rem;
}
.stat {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  box-shadow: var(--shadow-sm);
}
.stat .label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.stat .value {
  margin-top: 0.3rem;
  font-size: 1.65rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.stat .value small {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
}
.stat .sub {
  margin-top: 0.25rem;
  font-size: 0.82rem;
  color: var(--fg-muted);
}

/* ---------- Headings ---------- */
h2 {
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 0 0 0.4rem;
}
h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 0.3rem;
}
.section-sub {
  margin: 0 0 1.4rem;
  color: var(--fg-muted);
  max-width: 54rem;
}

/* ---------- Card / panel ---------- */
.panel {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

/* ---------- Tables ---------- */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  background: var(--bg-elev);
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.92rem;
}
thead th {
  text-align: right;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg-faint);
  padding: 0.85rem 0.9rem;
  background: var(--bg-sunken);
  border-bottom: 1px solid var(--border-strong);
  white-space: nowrap;
}
thead th:first-child,
thead th.left { text-align: left; }
tbody td {
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--border);
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--bg-sunken); }
td.left, th.left { text-align: left; }

td.rank {
  color: var(--fg-faint);
  font-weight: 600;
  width: 2.5rem;
}
td.model { text-align: left; font-weight: 600; white-space: normal; }
td.metric-primary {
  font-weight: 700;
  font-size: 1.0rem;
}
.pm { color: var(--fg-faint); font-weight: 400; font-size: 0.82em; }
.best { color: var(--accent); font-weight: 700; }

/* Leader row highlight */
tr.leader td {
  background: var(--gold-soft);
}
tr.leader:hover td { background: var(--gold-soft); }
tr.leader td.rank { color: var(--gold); font-weight: 800; }
tr.leader td.metric-primary { color: var(--gold); }

/* Row label cells in matrices */
td.rowhead { text-align: left; font-weight: 600; white-space: normal; }

/* ---------- Badges ---------- */
.badge {
  display: inline-block;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.15rem 0.45rem;
  border-radius: 100px;
  vertical-align: middle;
  margin-left: 0.5rem;
}
.badge.open {
  color: var(--good);
  background: var(--good-soft);
  border: 1px solid color-mix(in srgb, var(--good) 30%, transparent);
}
.badge.closed {
  color: var(--fg-muted);
  background: var(--bg-sunken);
  border: 1px solid var(--border-strong);
}
.spec {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fg-faint);
  font-weight: 400;
  margin-top: 0.1rem;
}

/* ---------- Findings ---------- */
.findings {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.1rem;
}
.finding {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow-sm);
}
.finding .fnum {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--accent);
}
.finding h3 { margin: 0.35rem 0 0.5rem; font-size: 1.1rem; }
.finding p { margin: 0; color: var(--fg-muted); font-size: 0.94rem; }
.finding p + p { margin-top: 0.6rem; }
.finding.headline {
  border-left-color: var(--gold);
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--gold-soft) 55%, var(--bg-elev)),
    var(--bg-elev) 60%
  );
}
.finding.headline .fnum { color: var(--gold); }
.finding b, .finding strong { color: var(--fg); }

/* ---------- Gallery ---------- */
.gallery-list {
  display: grid;
  gap: 1.5rem;
}
.gcard {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.gcard.featured {
  border-color: color-mix(in srgb, var(--gold) 45%, var(--border));
  box-shadow: var(--shadow-md);
}
.gcard-head {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 0.8rem;
}
.gcard-head .gid {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--fg-faint);
}
.gcard-head .rubric {
  flex: 1 1 100%;
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.4;
  margin: 0;
}
.featured-flag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--gold-soft);
  border: 1px solid color-mix(in srgb, var(--gold) 30%, transparent);
  padding: 0.18rem 0.5rem;
  border-radius: 100px;
}

.gcard-imgs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
}
.imgcell {
  background: var(--bg-sunken);
  padding: 0.9rem;
}
.imgcell .imglabel {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 0.55rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.imgcell .imglabel .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--fg-faint);
}
.imgcell.ref .imglabel .dot { background: var(--accent); }
.imgcell.pred .imglabel .dot { background: var(--gold); }
.imgcell img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #000;
}

.gcard-foot {
  padding: 1rem 1.25rem;
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 1rem 1.6rem;
  align-items: center;
}
.scorebox .k {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--fg-faint);
}
.scorebox .v {
  font-size: 1.5rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.scorebox .v.lo { color: var(--bad); }
.scorebox .v.hi { color: var(--good); }

.verdict-wrap { justify-self: start; }
.verdict {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.3rem 0.7rem;
  border-radius: 100px;
  letter-spacing: 0.01em;
}
.verdict.green {
  color: var(--good);
  background: var(--good-soft);
  border: 1px solid color-mix(in srgb, var(--good) 35%, transparent);
}
.verdict.amber {
  color: var(--warn);
  background: var(--warn-soft);
  border: 1px solid color-mix(in srgb, var(--warn) 35%, transparent);
}
.verdict.red {
  color: var(--bad);
  background: var(--bad-soft);
  border: 1px solid color-mix(in srgb, var(--bad) 35%, transparent);
}
.gcard-foot .note {
  font-size: 0.9rem;
  color: var(--fg-muted);
  margin: 0;
}
.gcard-foot .reason {
  grid-column: 1 / -1;
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin: 0;
  padding-top: 0.85rem;
  border-top: 1px dashed var(--border);
  line-height: 1.5;
}
.gcard-foot .reason b { color: var(--fg); font-weight: 600; }

/* ---------- Legend / callout strip ---------- */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  align-items: center;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1.2rem;
  font-size: 0.88rem;
  color: var(--fg-muted);
  box-shadow: var(--shadow-sm);
}
.legend .li { display: inline-flex; align-items: center; gap: 0.45rem; }
.legend b { color: var(--fg); }
.legend .chip {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  padding: 0.1em 0.45em;
  border-radius: var(--radius-sm);
  color: var(--fg);
}

.callout {
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  color: var(--fg);
  font-size: 0.95rem;
  line-height: 1.55;
}
.callout b { color: var(--accent-strong); }

/* ---------- Pipeline strip ---------- */
.pipeline {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0.6rem;
  margin-top: 1.25rem;
}
.pipeline .step {
  flex: 1 1 200px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow-sm);
}
.pipeline .step .n {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
}
.pipeline .step .t { font-weight: 700; margin: 0.15rem 0; }
.pipeline .step .d { font-size: 0.85rem; color: var(--fg-muted); }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 4rem;
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
}
.site-footer .wrap {
  padding: 2rem 1.25rem 3rem;
  font-size: 0.88rem;
  color: var(--fg-muted);
}
.site-footer p { margin: 0 0 0.7rem; max-width: 60rem; }
.site-footer .repro {
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  body { font-size: 15px; }
  .hero { padding: 2.25rem 0 0.5rem; }
  .nav a.label-full { display: none; }
  .gcard-imgs { grid-template-columns: 1fr; }
  .gcard-foot { grid-template-columns: 1fr 1fr; }
  .gcard-foot .note { grid-column: 1 / -1; }
}