:root{--bg: #0a0a14;--surface: #1a1a2e;--border: #2a2a44;--text: #e0e0e8;--text-dim: #8888a0;--accent: #4f8cff;--accent-hover: #6ea1ff;--danger: #ff4f6a;--success: #3dd68c;--warning: #ffc94f;--radius: 10px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);min-height:100dvh;display:flex;justify-content:center;align-items:center;overflow:hidden}#root{width:100%;min-height:100dvh;display:flex;justify-content:center;align-items:center}.lobby{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:3rem 2.5rem;text-align:center;max-width:400px;width:90%}.lobby h1{font-size:1.8rem;font-weight:700;margin-bottom:.3rem}.subtitle{color:var(--text-dim);margin-bottom:2rem;font-size:.95rem}.divider{color:var(--text-dim);margin:1.4rem 0;font-size:.85rem}.join-row{display:flex;gap:.5rem}.join-row input{flex:1;padding:.65rem .9rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);color:var(--text);font-size:.95rem;outline:none;transition:border-color .2s}.join-row input:focus{border-color:var(--accent)}.btn{padding:.65rem 1.2rem;border:none;border-radius:var(--radius);font-size:.95rem;font-weight:600;cursor:pointer;transition:background .2s,opacity .2s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff;width:100%}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-secondary{background:var(--border);color:var(--text)}.btn-secondary:hover:not(:disabled){background:#3a3a55}.call{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--bg);display:flex;align-items:center;justify-content:center}.remote-video{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center}.remote-video video,.remote-video canvas{width:100%;height:100%;object-fit:contain}.remote-placeholder{display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:var(--text-dim)}.pip-video{position:absolute;top:1rem;right:1rem;width:200px;height:150px;border-radius:12px;overflow:hidden;border:2px solid rgba(255,255,255,.15);box-shadow:0 4px 20px #00000080;z-index:10;transition:opacity .3s}.pip-video video,.pip-video canvas{width:100%;height:100%;object-fit:cover}.session-badge{position:absolute;top:1rem;left:1rem;font-family:monospace;font-size:.75rem;color:#ffffff80;background:#0006;padding:.25rem .6rem;border-radius:6px;z-index:10;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.status-overlay{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:1rem;font-weight:600;padding:.6rem 1.4rem;border-radius:8px;background:#0009;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:10;pointer-events:none;white-space:nowrap}.status-waiting{color:var(--text-dim)}.status-connecting{color:var(--warning)}.status-connected{display:none}.status-reconnecting{color:var(--warning);animation:pulse 1.5s ease-in-out infinite}.status-disconnected{color:var(--danger)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.controls-bar{position:absolute;bottom:2rem;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:.6rem;padding:.6rem 1rem;background:#141423bf;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.08);border-radius:16px;z-index:20}.ctrl-btn{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border:none;border-radius:50%;background:#ffffff1a;color:var(--text);font-size:1.2rem;cursor:pointer;transition:background .2s,transform .15s;-webkit-user-select:none;user-select:none}.ctrl-btn:hover{background:#ffffff2e;transform:scale(1.08)}.ctrl-btn:active{transform:scale(.95)}.ctrl-btn.ctrl-off{background:#ff4f6a40;color:var(--danger)}.ctrl-btn.ctrl-hangup{background:var(--danger);color:#fff}.ctrl-btn.ctrl-hangup:hover{background:#ff6680}.volume-control{display:flex;align-items:center;gap:.3rem;padding:0 .3rem}.volume-icon{font-size:1rem;width:1.3rem;text-align:center}.volume-control input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:80px;height:4px;border-radius:2px;background:#ffffff26;outline:none;cursor:pointer}.volume-control input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent);cursor:pointer}.volume-control input[type=range]::-moz-range-thumb{width:14px;height:14px;border:none;border-radius:50%;background:var(--accent);cursor:pointer}@media(max-width:600px){.pip-video{width:120px;height:90px;top:.6rem;right:.6rem;border-radius:8px}.session-badge{top:.6rem;left:.6rem;font-size:.65rem}.controls-bar{bottom:1rem;gap:.4rem;padding:.5rem .7rem;border-radius:12px}.ctrl-btn{width:42px;height:42px;font-size:1rem}.volume-control input[type=range]{width:60px}}@media(max-width:400px){.pip-video{width:100px;height:75px}}