/* SelectArena leaderboard. Colors are tokens so light and dark mode stay in sync with the
   generated pages in data/ (they use the same palette). */
:root {
  --fg: #1f2328;
  --muted: #59636e;
  --bg: #ffffff;
  --surface: #f6f8fa;
  --line: #d1d9e0;
  --accent: #0072b2;
  --accent-soft: #e6f1f8;
  --validity: #d55e00;
  --on-accent: #ffffff;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e6edf3;
    --muted: #9198a1;
    --bg: #0d1117;
    --surface: #151b23;
    --line: #3d444d;
    --accent: #4aa3df;
    --accent-soft: #10273a;
    --validity: #f08a4b;
    --on-accent: #0d1117;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
.page { max-width: 1200px; margin: 0 auto; padding: 24px 16px 48px; }

/* Header */
.brand { display: flex; align-items: center; gap: 16px; margin-bottom: 12px; }
.brand .logo { width: 92px; height: auto; flex: none; }
.brand > div { min-width: 0; flex: 1; }
.brand .subtitle { margin: 2px 0 0; overflow-wrap: anywhere; }
.header h1 { font-size: 2.1rem; line-height: 1.15; margin: 0; letter-spacing: -0.015em; }
@media (max-width: 640px) {
  .brand { gap: 12px; }
  .brand .logo { width: 64px; }
  .header h1 { font-size: 1.7rem; }
}
.header h1 .mark { color: var(--accent); }
.subtitle { margin: 4px 0 12px; color: var(--muted); font-size: 1.05rem; }
.facts { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.facts li {
  font-size: 0.8rem; padding: 2px 10px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--muted);
}
.links { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 10px; font-size: 0.95rem; }
.intro { max-width: 75ch; color: var(--fg); margin: 16px 0 8px; }

/* Tabs */
.tabs {
  display: flex; gap: 2px; margin: 20px 0 16px; border-bottom: 1px solid var(--line);
  overflow-x: auto; scrollbar-width: none;
}
.tabs button {
  font: inherit; font-weight: 600; color: var(--muted); background: none; border: 0;
  padding: 10px 14px; border-bottom: 2px solid transparent; margin-bottom: -1px;
  cursor: pointer; white-space: nowrap;
}
.tabs button[aria-selected="true"] { color: var(--fg); border-bottom-color: var(--accent); }
.tabs button:hover { color: var(--fg); }
.tabs button:focus-visible, .chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[role="tabpanel"][hidden] { display: none; }

/* Selection controls */
.controls {
  display: grid; gap: 12px; padding: 14px 16px; margin-bottom: 14px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
}
.control { display: grid; grid-template-columns: 150px 1fr; align-items: center; gap: 10px; }
.control-label { font-size: 0.85rem; font-weight: 600; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  font: inherit; font-size: 0.85rem; color: var(--fg); background: var(--bg);
  border: 1px solid var(--line); border-radius: 999px; padding: 3px 12px; cursor: pointer;
}
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.chip:disabled { opacity: 0.4; cursor: not-allowed; }
@media (max-width: 640px) {
  .control { grid-template-columns: 1fr; gap: 6px; }
}

.summary { margin: 0 0 10px; color: var(--muted); font-size: 0.95rem; }
.summary strong { color: var(--fg); }
.caption { font-size: 0.88rem; color: var(--muted); max-width: 95ch; margin: 6px 0 22px; }
.caption .stab { color: var(--accent); font-weight: 600; }
.caption .val { color: var(--validity); font-weight: 600; }

.frame { width: 100%; border: 0; display: block; }
.notice {
  padding: 18px; border: 1px dashed var(--line); border-radius: var(--radius);
  color: var(--muted); margin: 8px 0 16px;
}
h2 { font-size: 1.2rem; margin: 26px 0 8px; }
h3 { font-size: 1rem; margin: 20px 0 6px; color: var(--muted); }
.prose { max-width: 80ch; }
.prose li { margin: 4px 0; }
code { font-size: 0.88em; background: var(--surface); padding: 1px 5px; border-radius: 4px; }

/* Footer */
footer { margin-top: 36px; border-top: 1px solid var(--line); padding-top: 12px; }
details { margin: 8px 0; }
details summary { cursor: pointer; font-weight: 600; }
pre {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px; overflow-x: auto; font-size: 0.82rem;
}
.history { padding-left: 18px; }
.history li { margin: 6px 0; }