:root{--bg: #0f1419;--panel: #1a2230;--panel-2: #232d3f;--text: #e6eaf0;--muted: #8a94a6;--accent: #2f81f7;--danger: #e5484d;--green: #2ecc71;--radius: 12px}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,Sarabun,system-ui,sans-serif;background:var(--bg);color:var(--text)}button{cursor:pointer;border:none;border-radius:8px;padding:10px 14px;background:var(--panel-2);color:var(--text);font-size:14px;transition:.15s}button:hover{filter:brightness(1.15)}button:disabled{opacity:.5;cursor:default}button.primary,button .primary{background:var(--accent)}button.danger{background:var(--danger)}button.active{background:var(--accent)}button.ghost{background:transparent;color:var(--muted)}button.small{padding:4px 8px;font-size:12px}button.big{padding:14px;font-size:16px;width:100%}input{padding:11px 13px;border-radius:8px;border:1px solid #33405a;background:var(--bg);color:var(--text);font-size:15px;outline:none;width:100%}input:focus{border-color:var(--accent)}.muted{color:var(--muted)}.error{color:var(--danger);font-size:14px}.error.banner{padding:8px 16px;background:#e5484d1f}.center-screen{min-height:100vh;display:grid;place-items:center;padding:20px}.card{background:var(--panel);padding:28px;border-radius:var(--radius);width:360px;display:flex;flex-direction:column;gap:14px;box-shadow:0 10px 40px #0006}.card.wide{width:460px}.card h1{margin:0}.row{display:flex;gap:10px;align-items:center}.row.between{justify-content:space-between}.primary.big{background:var(--accent)}.room-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.room-list li{display:flex;justify-content:space-between;align-items:center;background:var(--panel-2);padding:10px 12px;border-radius:8px}.room-list li span{display:flex;align-items:center;gap:8px}.badge{background:var(--bg);padding:3px 8px;border-radius:20px;font-size:12px}.room{display:flex;flex-direction:column;height:100vh}.room-header{display:flex;justify-content:space-between;align-items:center;padding:12px 18px;background:var(--panel);border-bottom:1px solid #232d3f}.status.on{color:var(--green)}.status.off{color:var(--muted)}.room-body{flex:1;display:flex;overflow:hidden}.grid{flex:1;display:grid;gap:10px;padding:14px;align-content:center;justify-content:center}.tile{position:relative;background:#000;border-radius:var(--radius);overflow:hidden;aspect-ratio:4/3;min-width:220px}.tile video{width:100%;height:100%;object-fit:cover}.tile .avatar{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;font-size:48px;font-weight:700;background:var(--panel-2);color:var(--accent)}.tile-label{position:absolute;bottom:8px;left:8px;background:#0009;padding:4px 10px;border-radius:20px;font-size:13px}.chat{width:320px;border-left:1px solid #232d3f;background:var(--panel);display:flex;flex-direction:column}.chat-messages{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:8px}.msg{max-width:85%}.msg.self{align-self:flex-end;text-align:right}.msg-name{font-size:11px;color:var(--muted);margin-bottom:2px}.msg-bubble{display:inline-block;background:var(--panel-2);padding:8px 12px;border-radius:12px;font-size:14px;word-break:break-word}.msg.self .msg-bubble{background:var(--accent)}.chat-input{display:flex;gap:8px;padding:12px;border-top:1px solid #232d3f}.controls{display:flex;gap:10px;justify-content:center;padding:14px;background:var(--panel);border-top:1px solid #232d3f}