:root{color-scheme:dark;--bg: #5a7390;--surface: #4a607a;--card-bg: #fafafa;--fg: #ffffff;--fg-secondary: #7d9bb5;--accent: #4a90e2;--accent-fg: #ffffff;--red: #c0392b;--gold: #ffcd3a;--green: #27ae60;--border: rgba(255,255,255,.08);--felt-texture: radial-gradient(circle at 20% 30%, rgba(255,255,255,.04) 0px, transparent 1px), radial-gradient(circle at 60% 70%, rgba(0,0,0,.06) 0px, transparent 1px), radial-gradient(circle at 80% 20%, rgba(255,255,255,.03) 0px, transparent 1px)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:system-ui,-apple-system,Segoe UI,sans-serif;background:var(--bg);background-image:var(--felt-texture);background-size:8px 8px,6px 6px,10px 10px;color:var(--fg)}button{font:inherit;background:var(--accent);color:var(--accent-fg);border:0;border-radius:8px;padding:10px 16px;cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}button.secondary{background:var(--surface);color:var(--fg)}