:root{--bg: #0f172a;--panel: #1e293b;--panel-2: #273449;--border: #334155;--text: #e2e8f0;--text-dim: #94a3b8;--accent: #3b82f6;--accent-hover: #2563eb;--danger: #ef4444;--success: #22c55e;--radius: 12px;font-family:Segoe UI,Noto Sans Thai,system-ui,-apple-system,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text)}button{font-family:inherit;cursor:pointer}input{font-family:inherit}.page-center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:28px;width:100%;max-width:420px}.card h1{font-size:20px;margin:0 0 4px}.card .subtitle{color:var(--text-dim);font-size:14px;margin-bottom:20px}.field{margin-bottom:14px}.field label{display:block;font-size:13px;color:var(--text-dim);margin-bottom:6px}.field input{width:100%;padding:10px 12px;border-radius:8px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:15px}.field input:focus{outline:2px solid var(--accent);outline-offset:1px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:8px;border:none;background:var(--accent);color:#fff;font-size:15px;font-weight:600;transition:background .15s}.btn:hover{background:var(--accent-hover)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.full{width:100%}.btn.secondary{background:var(--panel-2);border:1px solid var(--border)}.btn.danger{background:var(--danger)}.btn.danger:hover{background:#dc2626}.error-text{color:var(--danger);font-size:13px;margin-top:8px}.hint{color:var(--text-dim);font-size:12px;margin-top:6px}.admin-shell{max-width:720px;margin:0 auto;padding:32px 16px}.admin-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.room-row{display:flex;align-items:center;justify-content:space-between;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:14px 18px;margin-bottom:10px}.room-row .code{font-size:18px;font-weight:700;letter-spacing:1px}.room-row .meta{color:var(--text-dim);font-size:13px}.badge{font-size:12px;padding:2px 8px;border-radius:999px;background:#22c55e26;color:var(--success)}.badge.closed{background:#94a3b826;color:var(--text-dim)}.new-room-box{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px;margin-bottom:24px}.copy-row{display:flex;gap:8px;margin-top:10px}.copy-row input{flex:1;padding:8px 10px;border-radius:8px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:13px}.room-shell{height:100vh;display:flex;flex-direction:column}.room-topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border)}.room-body{flex:1;display:flex;min-height:0}.room-main{flex:1;display:flex;align-items:center;justify-content:center;background:#000;position:relative;min-width:0}.room-main video{max-width:100%;max-height:100%}.room-main .placeholder{color:var(--text-dim);text-align:center;padding:24px}.room-side{width:300px;border-left:1px solid var(--border);display:flex;flex-direction:column;background:var(--panel)}.side-tabs{display:flex;border-bottom:1px solid var(--border)}.side-tabs button{flex:1;padding:10px;background:none;border:none;color:var(--text-dim);font-size:13px;border-bottom:2px solid transparent}.side-tabs button.active{color:var(--text);border-bottom-color:var(--accent)}.participant-list{flex:1;overflow-y:auto;padding:10px}.participant-item{display:flex;align-items:center;justify-content:space-between;padding:8px 10px;border-radius:8px}.participant-item:hover{background:var(--panel-2)}.participant-item .name{font-size:14px}.participant-item .icons{display:flex;gap:6px;color:var(--text-dim);font-size:12px}.chat-panel{flex:1;display:flex;flex-direction:column;min-height:0}.chat-messages{flex:1;overflow-y:auto;padding:10px}.chat-message{margin-bottom:10px;font-size:13px}.chat-message .from{color:var(--accent);font-weight:600;margin-right:6px}.chat-message .text{word-break:break-word;white-space:pre-wrap}.chat-input-row{display:flex;gap:6px;padding:10px;border-top:1px solid var(--border)}.chat-input-row input{flex:1;padding:8px 10px;border-radius:8px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:13px}.room-controls{display:flex;align-items:center;justify-content:center;gap:12px;padding:16px;border-top:1px solid var(--border)}.control-btn{display:flex;flex-direction:column;align-items:center;gap:4px;background:var(--panel-2);border:1px solid var(--border);border-radius:12px;padding:10px 16px;color:var(--text);font-size:12px;min-width:72px}.control-btn.active{background:var(--accent);border-color:var(--accent)}.control-btn.off{background:var(--danger);border-color:var(--danger)}.control-btn .icon{font-size:18px}