:root{--bg: #0f1115;--panel: #161a21;--panel-2: #1d232c;--border: #2a3140;--text: #e6e8eb;--muted: #8b93a1;--accent: #4f8cff;--accent-2: #3d6fd8;--green: #34c759;--red: #ff5c5c;--yellow: #ffb020;--radius: 10px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:-apple-system,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text)}button{font:inherit;border:none;cursor:pointer;border-radius:8px}input{font:inherit}button:disabled{opacity:.45;cursor:not-allowed}.app{display:grid;grid-template-rows:auto 1fr;height:100%}.topbar{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--panel);border-bottom:1px solid var(--border)}.topbar h1{font-size:16px;margin:0;white-space:nowrap}.topbar .spacer{flex:1}.body{display:grid;grid-template-columns:1fr 320px;gap:0;min-height:0}.join{display:flex;align-items:center;justify-content:center;height:100%}.join-card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:32px;width:360px;display:flex;flex-direction:column;gap:12px}.join-card h2{margin:0 0 4px}.join-card input{background:var(--panel-2);border:1px solid var(--border);color:var(--text);padding:10px 12px;border-radius:8px}.btn-primary{background:var(--accent);color:#fff;padding:10px 16px;font-size:14px}.btn-primary:hover{background:var(--accent-2)}.btn-ghost{background:var(--panel-2);color:var(--text);padding:8px 14px;font-size:13px}.btn-ghost:hover{background:#262d38}.btn-danger{background:var(--red);color:#fff;padding:10px 16px;font-size:14px}.hint{font-size:12px;color:var(--muted)}.videos{flex:1;min-height:0;padding:16px;overflow-y:auto;display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;align-content:start}.tile{position:relative;background:#000;border-radius:var(--radius);overflow:hidden;aspect-ratio:16 / 10;border:1px solid var(--border);cursor:pointer}.tile video{width:100%;height:100%;object-fit:cover;display:block}.tile.local video{transform:scaleX(-1)}.tile.screen video{object-fit:contain}.tile .tag{position:absolute;left:8px;bottom:8px;background:#0009;padding:3px 8px;border-radius:5px;font-size:12px;max-width:calc(100% - 16px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tile .badge{position:absolute;right:8px;top:8px;background:#0009;padding:2px 7px;border-radius:5px;font-size:11px;color:var(--muted)}.tile.muted .badge{color:var(--red)}.tile.screen .badge{color:var(--green)}.videos.focus{display:block;padding:0;overflow:hidden;position:relative}.focus-stage{width:100%;height:100%}.videos.focus .tile{width:100%;height:100%;aspect-ratio:auto;border:none;border-radius:0}.focus-back{position:absolute;top:12px;left:12px;z-index:3;background:#000000a6;color:var(--text);padding:6px 14px;border-radius:8px;font-size:13px}.tile .call-off{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px;background:#0f1115eb;z-index:2}.call-off .who{font-size:15px;font-weight:600}.call-off .hint{font-size:12px}.call-off .row{display:flex;gap:10px}.call-off .btn-call{background:var(--green);color:#fff;padding:8px 18px;font-size:14px}.call-off .btn-hang{background:var(--red);color:#fff;padding:8px 18px;font-size:14px}.controls{display:flex;justify-content:center;gap:10px;padding:12px;background:var(--panel);border-top:1px solid var(--border)}.controls button{width:52px;height:52px;border-radius:50%;background:var(--panel-2);color:var(--text);font-size:20px;display:inline-flex;align-items:center;justify-content:center}.controls button:hover{background:#262d38}.controls button.active{background:var(--yellow);color:#1a1d24}.controls button.hangup{background:var(--red);color:#fff}.side{border-left:1px solid var(--border);background:var(--panel);display:flex;flex-direction:column;min-height:0}.tabs{display:flex;border-bottom:1px solid var(--border)}.tabs button{flex:1;background:transparent;color:var(--muted);padding:10px 0;font-size:13px;border-bottom:2px solid transparent;border-radius:0}.tabs button.active{color:var(--text);border-bottom-color:var(--accent)}.chat{flex:1;display:flex;flex-direction:column;min-height:0}.chat-msgs{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:6px}.msg{max-width:85%;padding:6px 10px;border-radius:10px;font-size:13px}.msg.self{align-self:flex-end;background:var(--accent);color:#fff}.msg.other{align-self:flex-start;background:var(--panel-2)}.msg .from{font-size:11px;opacity:.7;margin-bottom:2px}.chat-input{display:flex;gap:8px;padding:10px;border-top:1px solid var(--border)}.chat-input input{flex:1;background:var(--panel-2);border:1px solid var(--border);color:var(--text);padding:8px 10px;border-radius:8px}.chat-input button{background:var(--accent);color:#fff;padding:8px 14px}.mgmt{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:10px}.mgmt h3{margin:4px 0;font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}.room-item{background:var(--panel-2);border:1px solid var(--border);border-radius:8px;padding:8px 10px;display:flex;align-items:center;justify-content:space-between;gap:8px}.room-item .name{font-size:13px}.room-item .count{font-size:11px;color:var(--muted)}.member-row{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:6px 4px;border-bottom:1px solid var(--border);font-size:13px}.member-row:last-child{border-bottom:none}.member-row .id{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.member-row .self-tag{color:var(--green);font-size:11px;margin-left:6px}.member-row .row-btns{display:flex;gap:6px;flex-shrink:0}.member-row .row-btns button{font-size:12px;padding:4px 10px;border-radius:6px}.evts{display:flex;flex-direction:column;gap:4px}.evt{font-size:12px;color:var(--muted)}.evt .t{color:var(--green);margin-right:6px}.evt .l{color:var(--red);margin-right:6px}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;z-index:50}.incoming{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:28px 36px;text-align:center;display:flex;flex-direction:column;gap:14px}.incoming .who{font-size:20px;font-weight:600}.incoming .row{display:flex;gap:14px;justify-content:center}.incoming .accept{background:var(--green);color:#fff;padding:10px 24px;font-size:15px}.incoming .reject{background:var(--red);color:#fff;padding:10px 24px;font-size:15px}.actlog{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:4px}.actlog .e{font-size:12px;color:var(--muted);display:flex;gap:6px}.actlog .k-call{color:var(--yellow)}.actlog .k-error{color:var(--red)}.actlog .k-join{color:var(--green)}.actlog .k-leave{color:var(--red)}@media (max-width: 900px){.body{grid-template-columns:1fr;grid-template-rows:1fr auto}.side{border-left:none;border-top:1px solid var(--border)}}