:root{--bg: #0f172a;--panel: #1e293b;--panel-2: #334155;--text: #e2e8f0;--muted: #94a3b8;--accent: #38bdf8;--danger: #f87171;--win: #22c55e;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}html,body,#app{margin:0;min-height:100%;height:100%}body{background:var(--bg);color:var(--text)}#app{display:flex;flex-direction:column}.page{flex:1;display:flex;flex-direction:column;align-items:center;padding:24px 16px;gap:20px;max-width:720px;width:100%;margin:0 auto}h1{margin:0;font-size:1.6rem}.card{background:var(--panel);border-radius:14px;padding:20px;width:100%}label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:6px}input{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--panel-2);background:var(--bg);color:var(--text);font-size:1rem}button{cursor:pointer;border:none;border-radius:10px;padding:12px 18px;font-size:1rem;font-weight:600;color:#06283d;background:var(--accent);transition:filter .12s ease}button:hover{filter:brightness(1.07)}button:disabled{opacity:.5;cursor:not-allowed}button.secondary{background:var(--panel-2);color:var(--text)}button.danger{background:var(--danger);color:#2a0a0a}.row{display:flex;gap:10px;flex-wrap:wrap}.muted{color:var(--muted)}.error{color:var(--danger);font-size:.9rem}.code-pill{font-size:2.4rem;font-weight:800;letter-spacing:6px;background:var(--bg);padding:10px 18px;border-radius:12px;display:inline-block}.buzzer{width:min(80vw,320px);height:min(80vw,320px);border-radius:50%;font-size:2rem;font-weight:800;color:#fff;background:radial-gradient(circle at 35% 30%,#ff6b6b,#c81e1e);box-shadow:0 12px 30px #c81e1e73;border:none;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}.buzzer:active{transform:scale(.96)}.buzzer.locked{background:radial-gradient(circle at 35% 30%,#64748b,#334155);box-shadow:none;cursor:not-allowed}.buzzer.won{background:radial-gradient(circle at 35% 30%,#4ade80,#15803d);box-shadow:0 12px 30px #22c55e73}.order-list{list-style:none;padding:0;margin:0;width:100%}.order-list li{display:flex;justify-content:space-between;padding:10px 14px;border-radius:10px;background:var(--bg);margin-bottom:8px}.order-list li.winner{background:#22c55e2e;border:1px solid var(--win)}.rank{font-weight:800;margin-right:10px;color:var(--accent)}.dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:8px}.dot.on{background:var(--win)}.dot.off{background:var(--muted)}.qr{background:#fff;padding:10px;border-radius:10px}