:root{--bg:#0d1013;--panel:#151a1f;--line:#283039;--text:#e8edf2;--muted:#9aa6b2;--accent:#3fc883;--red:#e5484d;--amber:#f0a83a;--green:#2fa36b}
[hidden]{display:none!important}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--bg);color:var(--text);font:15px/1.45 'Segoe UI',Inter,system-ui,sans-serif}
.top{display:flex;align-items:center;justify-content:space-between;padding:12px 18px;border-bottom:1px solid var(--line)}
.brand{font-size:16px;letter-spacing:.04em}.brand b{color:var(--accent)}
.pill{font:700 12px/1 system-ui;letter-spacing:.12em;padding:7px 12px;border-radius:999px;background:#222a33;color:var(--muted)}
.pill.air{background:var(--red);color:#fff;animation:pulse 1.2s ease-in-out infinite}.pill.pvw{background:var(--green);color:#fff}.pill.green{background:#24303b;color:#cfe}
@keyframes pulse{50%{opacity:.75}}
.setup{display:flex;justify-content:center;padding:24px 16px}
.card{width:min(720px,100%);background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:22px}
h1{margin:0 0 6px;font-size:24px}.sub{margin:0 0 16px;color:var(--muted)}
.previewbox{position:relative;aspect-ratio:16/9;background:#000;border-radius:10px;overflow:hidden;margin-bottom:14px}
.previewbox video{width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}
.noCam{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--muted)}
.meter{position:absolute;left:12px;right:12px;bottom:10px;height:6px;background:#0008;border-radius:3px;overflow:hidden}.meter i{display:block;height:100%;width:0;background:var(--accent);transition:width .08s}
.grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px}.grid>*{min-width:0}
label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted);letter-spacing:.04em}
input,select{width:100%;max-width:100%;min-width:0;text-overflow:ellipsis;font:inherit;color:var(--text);background:#0d1013;border:1px solid #2e3843;border-radius:8px;min-height:40px;padding:0 10px}
.row{display:flex;align-items:center;gap:12px;margin-top:16px;flex-wrap:wrap}
.btn{font:inherit;font-weight:600;color:var(--text);background:#1c232a;border:1px solid #2e3843;border-radius:9px;min-height:42px;padding:0 14px;cursor:pointer}
.btn:hover{border-color:#47535f}.btn[aria-pressed=true]{background:#3a2a10;border-color:var(--amber)}
.btn.go{background:var(--accent);color:#08140d;border-color:transparent;min-width:180px}.btn.go:disabled{opacity:.5;cursor:default}
.btn.danger{border-color:#6b2a2a;color:#ffb4b4}
.hint{color:var(--muted);font-size:13px}.fine{color:#6f7a86;font-size:12px;margin:14px 0 0}
.live{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:14px;padding:14px;min-height:calc(100vh - 54px)}
.stagearea{position:relative;display:flex;flex-direction:column;gap:12px}
.ret{position:relative;flex:1;min-height:240px;background:#000;border-radius:12px;overflow:hidden}
.ret video{width:100%;height:100%;object-fit:contain}
.retmsg{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--muted)}
.self{position:absolute;right:14px;bottom:14px;width:24%;min-width:150px;aspect-ratio:16/9;background:#000;border-radius:10px;overflow:hidden;border:3px solid #333}
.self video{width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}
.self.air{border-color:var(--red)}.self.pvw{border-color:var(--green)}
.tag{position:absolute;left:8px;top:8px;font:700 10px/1 system-ui;letter-spacing:.14em;background:#000a;padding:4px 6px;border-radius:4px}
.side{display:flex;flex-direction:column;gap:12px;min-height:0}
.state{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px}.state b{display:block;font-size:20px}.state small{color:var(--muted)}
.state.air{border-color:var(--red);background:#3a1215}.state.pvw{border-color:var(--green);background:#0f2a1d}
.chat{flex:1;display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:12px;min-height:200px}
.msgs{flex:1;overflow:auto;padding:10px;display:flex;flex-direction:column;gap:6px}.msgs div{font-size:14px}.msgs b{color:var(--accent);margin-right:6px}.msgs .me b{color:var(--amber)}
#chatF{display:flex;gap:6px;padding:8px;border-top:1px solid var(--line)}#chatF input{flex:1;min-width:0}
.ctrls{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px}
.net{font-size:12px;color:var(--muted)}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#222a33;border:1px solid var(--line);padding:10px 16px;border-radius:10px;max-width:90vw}
@media (max-width:820px){.live{grid-template-columns:1fr}.self{width:34%}.grid{grid-template-columns:1fr}}