:root{--bg: #0f1115;--panel: #181b22;--panel-2: #222631;--border: #2c3140;--text: #e8eaf0;--muted: #8b91a1;--accent: #4f8cff;--danger: #e5484d;--good: #3fb950;--ok: #d29922;--bad: #f85149;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);font:15px/1.4 system-ui,-apple-system,Segoe UI,PingFang SC,Microsoft YaHei,Roboto,sans-serif}h1{margin:0 0 4px;font-size:24px}.muted{color:var(--muted)}.error{color:var(--bad)}button,.button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:40px;padding:0 14px;border:1px solid var(--border);border-radius:10px;background:var(--panel-2);color:var(--text);font:inherit;text-decoration:none;cursor:pointer;white-space:nowrap}button:disabled{opacity:.4;cursor:default}button.primary,.button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.danger{background:var(--danger);border-color:var(--danger);color:#fff}button.active{border-color:var(--accent);color:var(--accent)}button.off{background:#3a2326;border-color:#5c2b30}button.link{min-height:0;padding:4px 8px;border:none;background:none}input,select{min-height:40px;padding:0 12px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);font:inherit}.centered{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:100%;padding:24px 16px;text-align:center}.copy-link{display:flex;gap:8px;width:min(460px,100%)}.copy-link input{flex:1;min-width:0}.setup{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:24px;min-height:100%;padding:24px 16px}.preview{position:relative;width:min(560px,100%);aspect-ratio:4 / 3;overflow:hidden;border:1px solid var(--border);border-radius:14px;background:#000}.preview-video{width:100%;height:100%;object-fit:cover}.preview-off{display:flex;align-items:center;justify-content:center;height:100%;color:var(--muted)}.mic-level{position:absolute;left:12px;right:12px;bottom:12px;height:6px;overflow:hidden;border-radius:999px;background:#ffffff26}.mic-level div{height:100%;background:var(--good);transform:scaleX(0);transform-origin:left}.setup-panel{display:flex;flex-direction:column;gap:12px;width:min(380px,100%)}.setup-panel .copy-link{width:100%}.device-row{display:flex;align-items:center;gap:8px}.device-row button{width:132px;flex-shrink:0}.device-row select,.device-row span{flex:1;min-width:0}.device-row 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var(--border);border-radius:10px}video.local.screen{object-fit:contain}.waiting{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;height:100%;padding:16px;color:var(--muted);text-align:center}.banner{position:absolute;top:12px;left:50%;transform:translate(-50%);padding:6px 12px;border-radius:999px;background:#000000b3;font-size:13px}.stats{position:absolute;top:12px;left:12px;padding:10px 12px;border-radius:10px;background:#000000bf;font:12px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace}.stats dl{display:grid;grid-template-columns:auto auto;gap:0 12px;margin:0 0 6px}.stats dt{color:var(--muted)}.stats dd{margin:0}.stats .good{color:var(--good)}.stats .ok{color:var(--ok)}.stats .bad{color:var(--bad)}.controls{grid-area:controls;display:flex;flex-wrap:wrap;justify-content:center;gap:8px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:var(--panel);border-top:1px solid var(--border)}.badge{min-width:18px;padding:0 5px;border-radius:999px;background:var(--danger);color:#fff;font-size:11px;line-height:18px}.chat{grid-area:chat;display:flex;flex-direction:column;min-height:0;background:var(--panel);border-left:1px solid var(--border)}.chat header{display:flex;align-items:center;justify-content:space-between;padding:8px 8px 8px 14px;border-bottom:1px solid var(--border);font-weight:600}.messages{flex:1;display:flex;flex-direction:column;gap:6px;padding:12px;overflow-y:auto}.messages .empty{margin:auto;text-align:center;font-size:13px}.msg{align-self:flex-start;max-width:85%;padding:6px 10px;border-radius:12px;background:var(--panel-2);overflow-wrap:anywhere;white-space:pre-wrap}.msg.mine{align-self:flex-end;background:#1f3b6e}.msg time{display:block;color:var(--muted);font-size:11px;text-align:right}.chat form{display:flex;gap:8px;padding:10px;border-top:1px solid var(--border)}.chat form input{flex:1;min-width:0}@media (max-width: 899px){.call.chat-open{grid-template-columns:1fr;grid-template-areas:"stage" "controls"}.chat{position:fixed;inset:auto 0 0 0;height:55%;z-index:10;border-left:none;border-top:1px solid var(--border);border-radius:14px 14px 0 0}.controls button{padding:0 10px;font-size:14px}}