:root {
  --bg: #0a0b0d;
  --bg-elev: #14171c;
  --card: #1c1f24;
  --card-border: #262a31;
  --text: #f1f5f9;
  --text-dim: #9ca3af;
  --text-faint: #64748b;
  --accent: #7dd3fc;
  --accent-strong: #38bdf8;
  --sota: #fb7185;
  --warn: #fbbf24;
  --good: #34d399;
  --bad: #f87171;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-strong); text-decoration: underline; }

.container { max-width: 1180px; margin: 0 auto; padding: 24px 20px 64px; }

header.site {
  border-bottom: 1px solid var(--card-border);
  background: linear-gradient(180deg, #0d0f13 0%, var(--bg) 100%);
  padding: 18px 0;
}
header.site .row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
header.site h1 {
  margin: 0; font-size: 22px; font-weight: 700;
  display: flex; align-items: center; gap: 10px;
}
header.site h1 .logo {
  width: 28px; height: 28px; border-radius: 6px;
  background: linear-gradient(135deg, var(--accent) 0%, #6366f1 100%);
  display: inline-block;
}
header.site .tagline { color: var(--text-dim); font-size: 13px; }
header.site nav a { margin-left: 16px; font-size: 14px; color: var(--text-dim); }

.refresh-badge {
  font-size: 12px; color: var(--text-faint);
  border: 1px solid var(--card-border);
  background: var(--bg-elev);
  padding: 4px 10px; border-radius: 999px;
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}
.card h2 { margin: 0 0 12px; font-size: 18px; font-weight: 600; }
.card h3 { margin: 0 0 8px; font-size: 14px; font-weight: 600; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; }
.card p { color: var(--text-dim); margin: 0 0 8px; }

.hero {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px;
}
@media (max-width: 880px) { .hero { grid-template-columns: 1fr; } }

.chart-wrap { position: relative; height: 320px; }
.chart-wrap.tall { height: 380px; }
.chart-wrap.short { height: 220px; }

.calc-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  align-items: end;
}
.calc-grid .full { grid-column: 1 / -1; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field label { font-size: 12px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.04em; }
.field input, .field select {
  background: var(--bg-elev);
  border: 1px solid var(--card-border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--accent); }
.field .hint { color: var(--text-faint); font-size: 11px; }

.calc-result {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px;
  margin-top: 16px;
}
.calc-result .stat {
  background: var(--bg-elev);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 12px;
}
.calc-result .stat .label { font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.06em; }
.calc-result .stat .value { font-size: 22px; font-weight: 700; margin-top: 4px; }
.calc-result .stat .value.bad { color: var(--bad); }
.calc-result .stat .value.warn { color: var(--warn); }
.calc-result .stat .value.good { color: var(--good); }
@media (max-width: 640px) { .calc-result { grid-template-columns: repeat(2, 1fr); } }

table.leaderboard {
  width: 100%; border-collapse: collapse;
  font-size: 14px;
}
table.leaderboard th, table.leaderboard td {
  padding: 10px 8px;
  border-bottom: 1px solid var(--card-border);
  text-align: left;
  vertical-align: middle;
}
table.leaderboard th {
  font-weight: 600; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 0.04em; font-size: 11px;
  cursor: pointer; user-select: none;
}
table.leaderboard th .sort-arrow { color: var(--accent); margin-left: 4px; }
table.leaderboard tbody tr { cursor: pointer; }
table.leaderboard tbody tr:hover { background: rgba(125, 211, 252, 0.05); }
table.leaderboard td.num { font-variant-numeric: tabular-nums; text-align: right; }
table.leaderboard .vendor-pill {
  display: inline-block; font-size: 11px;
  padding: 2px 8px; border-radius: 999px;
  background: var(--bg-elev); color: var(--text-dim);
  border: 1px solid var(--card-border);
}
.sota-pill {
  background: rgba(251, 113, 133, 0.15);
  color: var(--sota);
  border: 1px solid rgba(251, 113, 133, 0.3);
  font-size: 11px; padding: 2px 8px; border-radius: 999px;
  margin-left: 6px;
}

.movers ul { list-style: none; padding: 0; margin: 0; }
.movers li {
  padding: 10px 0;
  border-bottom: 1px solid var(--card-border);
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
}
.movers li:last-child { border-bottom: none; }
.movers .delta.up { color: var(--good); }
.movers .delta.down { color: var(--bad); }
.movers .delta.new { color: var(--accent); }

footer.site {
  border-top: 1px solid var(--card-border);
  margin-top: 40px;
  padding: 20px 0;
  color: var(--text-faint);
  font-size: 12px;
  text-align: center;
}

.muted { color: var(--text-dim); }
.faint { color: var(--text-faint); }
.tiny { font-size: 12px; }
.spacer { height: 16px; }

.scaffold-list {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-wrap: wrap; gap: 6px;
}
.scaffold-list li {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
  background: var(--bg-elev);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  padding: 3px 8px;
  color: var(--text-dim);
}

.stale-banner {
  background: rgba(251, 191, 36, 0.12);
  border: 1px solid rgba(251, 191, 36, 0.35);
  color: var(--warn);
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 13px;
  margin-bottom: 16px;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-dim);
}