/* Teabash Rules — minimal, clean, accessible styles */

:root {
  --bg: #0f1115;
  --bg-elev: #151823;
  --text: #e7e9ee;
  --muted: #a9afbd;
  --accent: #6aa9ff;
  --accent-2: #8b5cf6;
  --border: #262b3a;
  --ok: #39d98a;
  --warn: #ffce3d;
  --danger: #ff6b6b;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, 'Apple Color Emoji', 'Segoe UI Emoji';
  background: linear-gradient(180deg, #0f1115 0%, #0d1017 100%);
  color: var(--text);
}

.container {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  background: radial-gradient(1200px 400px at 50% -100px, rgba(106,169,255,0.25), transparent 60%),
              radial-gradient(800px 300px at 80% -120px, rgba(139,92,246,0.25), transparent 60%),
              var(--bg-elev);
  border-bottom: 1px solid var(--border);
}
.site-header .container { padding: 3rem 0 2rem; }
.site-header h1 {
  margin: 0 0 .25rem;
  letter-spacing: .5px;
  font-weight: 700;
}
.tagline { color: var(--muted); margin: 0; }

main.container { padding: 2rem 0 3rem; }

.intro {
  background: rgba(21, 24, 35, .65);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  color: var(--muted);
}

.rules { margin-top: 1.5rem; }
.rules h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.15rem;
  color: #d6daf0;
  letter-spacing: .3px;
}

.rule-list {
  display: grid;
  gap: .5rem;
}

details {
  background: rgba(21,24,35,.85);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color .2s ease, background .2s ease;
  overflow: hidden;
}
details[open] { border-color: #334060; background: rgba(21,24,35,.95); }

summary {
  list-style: none;
  padding: .9rem 1rem;
  cursor: pointer;
  position: relative;
  font-weight: 600;
}
summary::-webkit-details-marker { display: none; }
summary::marker { content: ''; }

/* chevron */
summary::after {
  content: '';
  position: absolute; right: 1rem; top: 50%; transform: translateY(-50%) rotate(-90deg);
  width: 10px; height: 10px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transition: transform .2s ease, border-color .2s ease;
}
details[open] summary::after { transform: translateY(-50%) rotate(45deg); border-color: var(--accent); }

details p {
  margin: 0;
  padding: 0 1rem 1rem 1rem;
  color: #c9cee2;
}

.footnote {
  margin-top: 2rem;
  color: var(--muted);
  font-size: .95rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: #0f121a;
}
.site-footer .container {
  padding: 1rem 0;
  color: var(--muted);
  font-size: .95rem;
}

/* Responsive tweaks */
@media (max-width: 600px) {
  .site-header .container { padding: 2rem 0 1.5rem; }
  summary { padding-right: 2.25rem; }
}