:root{color-scheme:dark;--couch: #e9ad63;--couch-dark: #cd8845;--you: #2fa66a;--stage: #141517;--frame: #1d2633;--frame-highlight: #3e4b5b;--wall: #0d1117;--ink: #e8e6e3;--ink-dim: #9aa7b4;--route-p2p: #1f7a4a;--route-sfu: #53676a;--ok: #2fa66a;--warn: #e0a84c;--bad: #e05c5c;--radius: 16px;--control-radius: 18px;--font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;--mono: ui-monospace, "Cascadia Mono", Consolas, monospace}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{background:var(--wall);color:var(--ink);font-family:var(--font);font-size:15px}button,input,select{font:inherit;color:inherit}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}.btn{background:var(--frame);border:1px solid var(--frame-highlight);border-radius:var(--control-radius);padding:9px 16px;transition:background .15s ease,transform .05s ease}.btn:hover{background:#26313f}.btn:active{transform:translateY(1px)}.btn.primary{background:var(--couch);color:#201607;border-color:var(--couch-dark);font-weight:600}.btn.danger{border-color:#7a3030;color:#ffb4b4}.btn.small{padding:4px 10px;font-size:13px;border-radius:12px}.hall{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(1200px 600px at 50% -10%,#1b2430 0%,var(--wall) 60%)}.card{width:min(460px,100%);background:var(--frame);border:1px solid var(--frame-highlight);border-radius:22px;padding:28px;box-shadow:0 18px 60px #00000073}.brand{display:flex;align-items:center;gap:10px;margin-bottom:6px}.brand h1{font-size:22px;margin:0;letter-spacing:.5px}.brand .dot{width:12px;height:12px;border-radius:50%;background:var(--couch)}.sub{color:var(--ink-dim);font-size:13px;margin:0 0 20px}label{display:block;font-size:13px;color:var(--ink-dim);margin:14px 0 6px}input[type=text],input[type=password]{width:100%;padding:11px 13px;background:var(--stage);border:1px solid var(--frame-highlight);border-radius:12px;outline:none}input:focus{border-color:var(--couch)}.hall .btn.primary{width:100%;margin-top:20px;padding:12px}.err{color:var(--bad);font-size:13px;margin-top:12px;min-height:18px}.room{min-height:100vh;display:flex;flex-direction:column}.top{display:flex;align-items:center;gap:12px;padding:10px 16px;border-bottom:1px solid var(--frame);background:#11161d;position:sticky;top:0;z-index:5;flex-wrap:wrap}.roomname{font-weight:600}.pill{font-size:12px;color:var(--ink-dim);background:var(--frame);border-radius:999px;padding:3px 10px}.pill.warn{color:#201607;background:var(--warn)}.pill.bad{color:#fff;background:var(--bad)}.grow{flex:1}.traffic{font-size:12px;color:var(--ink-dim);font-variant-numeric:tabular-nums}.stage-wrap{flex:1;padding:14px;display:flex;gap:14px;min-height:0}.tiles{flex:1;display:grid;gap:12px;align-content:start;min-height:0}.tiles.grid{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}.tiles.focus{grid-template-columns:1fr;grid-template-rows:1fr}.tiles.focus .tile.thumb{display:none}.strip{display:flex;gap:10px;overflow-x:auto;padding:6px;align-items:center;border-top:1px solid var(--frame);background:#11161d}.strip .mini{width:150px;height:88px;border-radius:10px;overflow:hidden;border:1px solid var(--frame-highlight);flex:0 0 auto;position:relative;background:#000;cursor:pointer}.strip .mini.sel{border-color:var(--couch);box-shadow:0 0 0 2px #e9ad6340}.strip .mini span{position:absolute;left:6px;bottom:4px;font-size:11px;text-shadow:0 1px 3px #000}.strip .mini video{width:100%;height:100%;object-fit:contain}.tile{position:relative;background:var(--stage);border:1px solid var(--frame);border-radius:var(--radius);overflow:hidden;min-height:200px;display:flex}.tile video{width:100%;height:100%;object-fit:contain;background:#000;transition:filter .2s}.tile.hidden-sub video{display:none}.tile .placeholder{position:absolute;inset:0;display:grid;place-items:center;color:var(--ink-dim);font-size:13px}.tile .badge{position:absolute;top:8px;left:8px;display:flex;gap:6px;align-items:center;background:#0000008c;border-radius:999px;padding:3px 10px;font-size:12px;backdrop-filter:blur(6px)}.tile .q{position:absolute;top:8px;right:8px;display:flex;gap:5px;align-items:center;background:#0000008c;border-radius:999px;padding:3px 9px;font-size:11px;font-family:var(--mono)}.dotq{width:8px;height:8px;border-radius:50%;background:var(--ink-dim)}.dotq.good{background:var(--ok)}.dotq.fair{background:var(--warn)}.dotq.poor{background:var(--bad)}.side{width:300px;flex:0 0 300px;display:flex;flex-direction:column;gap:12px}.panel{background:var(--frame);border:1px solid var(--frame);border-radius:var(--radius);padding:14px}.panel h3{margin:0 0 10px;font-size:13px;color:var(--ink-dim);font-weight:600;letter-spacing:.4px}.row{display:flex;justify-content:space-between;gap:8px;font-size:13px;padding:3px 0}.row b{font-weight:600;font-variant-numeric:tabular-nums}.seg{display:flex;gap:6px}.seg button{flex:1;padding:7px 0;border-radius:12px;background:var(--stage);border:1px solid var(--frame-highlight);font-size:13px}.seg button.on{background:var(--couch);color:#201607;border-color:var(--couch-dark);font-weight:600}.slider{width:100%}.sld-val{font-family:var(--mono);font-size:12px;color:var(--ink-dim);text-align:right}.controls{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--frame);background:#11161d;align-items:center}.warnbar{padding:8px 16px;background:#4a2a2a;color:#ffd7d7;font-size:13px;text-align:center}@media (max-width: 900px){.side{display:none}.tiles.grid{grid-template-columns:1fr}}