:root {
  --bg: #f6f7f9; --fg: #1d2330; --muted: #5d6677; --card: #fff; --line: #e2e5ea; --accent: #1f6feb;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #14171c; --fg: #e8ebf0; --muted: #9aa3b2; --card: #1d2128; --line: #2c323c; --accent: #4c8dff; }
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--bg); color: var(--fg); }
header { display: flex; gap: 16px; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--card); }
header h1 { font-size: 18px; margin: 0; flex: 1; }
header span { color: var(--muted); font-size: 14px; }
a { color: var(--accent); }
main { max-width: 960px; margin: 0 auto; padding: 16px; }
.dlazdice { list-style: none; padding: 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.dlazdice li > * { display: block; padding: 16px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; text-decoration: none; color: inherit; min-height: 92px; }
.dlazdice li a:hover { border-color: var(--accent); }
.dlazdice strong { display: block; margin-bottom: 4px; }
.dlazdice span { color: var(--muted); font-size: 14px; }
.zamceno { opacity: .5; }
.prihlaseni { max-width: 420px; margin-top: 12vh; text-align: center; }
.tlacitko { display: inline-block; padding: 12px 20px; background: var(--accent); color: #fff; border-radius: 8px; text-decoration: none; font-weight: 600; }
.pozn { color: var(--muted); font-size: 14px; margin-top: 24px; }