:root{color-scheme:dark;--bg: #0e131a;--panel: #18212c;--border: #2c3744;--text: #e7edf3;--muted: #93a1b0;--accent: #4fb286;--danger: #d6534a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.app{max-width:820px;margin:0 auto;padding:24px 16px 48px}h1{margin:0 0 4px}.muted{color:#93a1b0}.lobby h2{margin:0 0 12px;font-size:1.05rem}.lobby-header{display:flex;align-items:center;justify-content:space-between;gap:12px}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:16px;margin:16px 0}.options{display:flex;gap:16px;align-items:stretch}.options .card{flex:1;display:flex;flex-direction:column}.options .card button{margin-top:auto}@media (max-width: 640px){.options{flex-direction:column}}.sound-test-buttons{display:flex;gap:12px;flex-wrap:wrap}.name-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:12px 16px;margin:16px 0}button.secondary{background:transparent;color:var(--text);border:1px solid var(--border);font-weight:500}.field{display:flex;flex-direction:column;gap:4px;margin-bottom:12px}.field span{font-size:.85rem;color:#93a1b0}input,select{background:#0e131a;border:1px solid var(--border);color:var(--text);border-radius:6px;padding:8px 10px;font-size:1rem}button{background:var(--accent);border:none;color:#06160f;font-weight:600;border-radius:6px;padding:9px 14px;cursor:pointer;font-size:.95rem}button:disabled{opacity:.45;cursor:not-allowed}button:not(:disabled):hover{filter:brightness(1.08)}.help-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}.help-rules{margin:0;padding-left:20px;line-height:1.5}.help-rules li{margin-bottom:8px}.help-pieces{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}.help-piece{display:flex;align-items:flex-start;gap:14px}.help-piece p{margin:4px 0 0;font-size:.9rem}.help-swatch{flex:0 0 auto;width:56px;height:56px;border:1px solid var(--border);border-radius:6px}.help-example{margin-top:18px}.help-example h3{margin:0 0 8px;font-size:1rem}.help-example p{margin:8px 0 0;font-size:.9rem}.help-board{display:block;width:100%;max-width:460px;aspect-ratio:10 / 8;border:1px solid var(--border);border-radius:6px}.help-footer{margin-top:20px}.nav-help{font-size:.85rem;padding:7px 10px}.top-nav{display:flex;align-items:center;gap:12px;margin-bottom:16px;padding:8px 12px;background:var(--panel);border:1px solid var(--border);border-radius:10px}.nav-info{display:flex;flex-wrap:wrap;align-items:center;gap:12px;flex:1}.nav-item{font-size:.9rem}.sound-controls-nav{flex-shrink:0}.code{font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:1.15rem;letter-spacing:2px;background:#0e131a;border:1px solid var(--border);border-radius:6px;padding:2px 8px;color:var(--accent)}.turn{padding:4px 10px;border-radius:6px;border:1px solid var(--border)}.turn-active{border-color:var(--accent);color:var(--accent)}.turn-waiting{border-color:#5a4a16;color:#e8a33d}.turn-hourglass{display:inline-block;margin-right:6px;animation:hourglass-spin 3s linear infinite}@keyframes hourglass-spin{to{transform:rotate(360deg)}}.turn-you-icon{display:inline-block;width:1.05em;height:1.05em;margin-right:6px;vertical-align:-.15em;fill:var(--accent);transform-origin:center;animation:you-pulse 1.2s ease-in-out infinite}@keyframes you-pulse{0%,to{transform:scale(.78);opacity:.85}50%{transform:scale(1.18);opacity:1}}.board-stage{position:relative;width:100%;max-width:640px}.board-canvas{display:block;width:100%;max-width:640px;aspect-ratio:10 / 8;border:1px solid var(--border);border-radius:6px;cursor:default}.emoji-overlay{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:hidden}.emoji-particle{position:absolute;font-size:1.6rem;line-height:1;animation-name:emoji-pop;animation-timing-function:ease-out;animation-fill-mode:both;will-change:transform,opacity}@keyframes emoji-pop{0%{transform:translate(-50%,-50%) translate(0) scale(.2);opacity:0}15%{transform:translate(-50%,-50%) translate(calc(var(--dx) * .15),calc(var(--dy) * .15)) scale(1.2);opacity:1}to{transform:translate(-50%,-50%) translate(var(--dx),var(--dy)) scale(1);opacity:0}}.laser-controls{margin-top:12px}.board-canvas-active{cursor:pointer}.center-action{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:10}.fire-btn,.ack-btn{font-size:1.15rem;font-weight:700;padding:14px 28px;border-radius:10px;box-shadow:0 6px 24px #00000080}.fire-btn{background:var(--danger);color:#fff;animation:fire-pulse 1.1s ease-in-out infinite}@keyframes fire-pulse{0%,to{transform:scale(1)}50%{transform:scale(1.06)}}.center-status{background:#0e131ad9;border:1px solid var(--border);color:var(--muted);padding:10px 18px;border-radius:8px;font-size:.95rem;pointer-events:none;white-space:nowrap}.ping-overlay{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:hidden}.ping-ring{position:absolute;width:0;height:0;border:2px solid #fff;border-radius:50%;transform:translate(-50%,-50%);animation:ping-expand .5s ease-out forwards}@keyframes ping-expand{0%{width:0;height:0;opacity:1}to{width:40px;height:40px;opacity:0}}.charge-ring{position:absolute;width:0;height:0;border:3px solid #ff3b3b;border-radius:50%;transform:translate(-50%,-50%);box-shadow:0 0 12px #ff3b3b,0 0 24px #ff3b3b99;animation:charge-expand .7s ease-out forwards}@keyframes charge-expand{0%{width:8px;height:8px;opacity:.9}to{width:92px;height:92px;opacity:0}}.rotate-overlay{position:absolute;transform:translate(-50%,-50%);display:flex;gap:12px;z-index:10;pointer-events:none}.rotate-arrow-btn{pointer-events:auto;background:transparent;border:2px solid var(--accent);color:var(--accent);border-radius:10px;padding:5px;display:inline-flex;align-items:center;justify-content:center}.rotate-arrow-btn:not(:disabled):hover{background:#4fb28626}.rotate-arrow{display:block;width:30px;height:30px}.warn{margin:10px 0;padding:8px 12px;border-radius:6px;background:#2a2410;border:1px solid #5a4a16;color:#e7cf7a}.error{margin:12px 0;padding:8px 12px;border-radius:6px;background:#2a1413;border:1px solid #5a201c;color:#f0a8a2}.winner-banner{margin-top:16px;padding:16px;border-radius:10px;text-align:center;font-size:1.3rem;font-weight:700;background:#2a1413;border:1px solid #5a201c;color:#f0a8a2}.winner-you{background:#0f2a1e;border-color:#1f5a3f;color:#8be0b4}.winner-actions{margin-top:14px}.waiting-room{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:24px;text-align:center}.join-link-row{display:flex;gap:8px;max-width:480px;margin:0 auto 8px}.join-link{flex:1;min-width:0;font-size:.85rem;color:var(--muted)}.join-link-row button{white-space:nowrap}.hotseat-btn{display:block;margin:2rem auto 0;background:#e08a3c;color:#1a1207}.hotseat-btn:not(:disabled):hover{background:#c9762d}.sound-controls{display:flex;gap:6px}.sound-controls-corner{position:fixed;top:12px;right:12px;z-index:50}.sound-btn{position:relative;background:var(--panel);border:1px solid var(--border);color:var(--text);font-size:1.1rem;line-height:1;padding:7px 10px}.sound-btn.sound-off{opacity:.45}.sound-btn.sound-off:after{content:"";position:absolute;left:50%;top:50%;width:130%;height:2px;background:var(--danger);border-radius:2px;transform:translate(-50%,-50%) rotate(-45deg);pointer-events:none}