:root{--bg-primary: #0f172a;--bg-surface: #1e293b;--bg-elevated: #334155;--bg-glass: rgba(30, 41, 59, .88);--text-primary: #f8fafc;--text-secondary: #94a3b8;--accent-primary: #3b82f6;--accent-primary-hover: #2563eb;--accent-speaking: #22c55e;--accent-speaking-glow: rgba(34, 197, 94, .35);--accent-warning: #f59e0b;--accent-danger: #ef4444;--border-color: #334155;--radius-md: 10px;--radius-lg: 14px}[data-theme=light]{--bg-primary: #f8fafc;--bg-surface: #ffffff;--bg-elevated: #f1f5f9;--bg-glass: rgba(255, 255, 255, .92);--text-primary: #0f172a;--text-secondary: #475569;--accent-primary: #2563eb;--accent-primary-hover: #1d4ed8;--accent-speaking: #16a34a;--accent-speaking-glow: rgba(22, 163, 74, .25);--accent-warning: #d97706;--accent-danger: #dc2626;--border-color: #e2e8f0}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html,body{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-primary);color:var(--text-primary);min-height:100vh;min-height:100dvh;overflow-x:hidden}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}button:disabled{opacity:.5;cursor:not-allowed}input,textarea{font-family:inherit;font-size:16px;color:var(--text-primary);background:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:11px 14px;outline:none;width:100%}input:focus,textarea:focus{border-color:var(--accent-primary)}.lobby-wrapper{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px;padding-top:max(20px,env(safe-area-inset-top));padding-bottom:max(20px,env(safe-area-inset-bottom))}.lobby-card{width:100%;max-width:500px;background:var(--bg-surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:28px;display:flex;flex-direction:column;gap:18px}.brand-header{display:flex;align-items:center;justify-content:space-between;gap:8px}.brand-logo{display:flex;align-items:center;gap:10px;font-size:1.35rem;font-weight:700;flex-wrap:wrap}.badge{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:999px;font-size:.76rem;font-weight:600;background:var(--bg-elevated);color:var(--text-secondary);white-space:nowrap}.badge-success{color:var(--accent-speaking);border:1px solid var(--accent-speaking)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 16px;border-radius:var(--radius-md);font-weight:600;font-size:.94rem;white-space:nowrap;transition:opacity .15s ease,transform .1s ease}.btn:active{transform:scale(.98)}.btn-primary{background:var(--accent-primary);color:#fff}.btn-primary:hover{background:var(--accent-primary-hover)}.btn-secondary{background:var(--bg-elevated);border:1px solid var(--border-color)}.btn-danger{background:var(--accent-danger);color:#fff}.form-group{display:flex;flex-direction:column;gap:6px}.form-row{display:flex;gap:8px}.form-label{font-size:.84rem;color:var(--text-secondary);font-weight:500}.room-layout{height:100vh;height:100dvh;width:100vw;display:flex;flex-direction:column;background:var(--bg-primary);overflow:hidden}.room-topbar{min-height:58px;padding:8px 16px;padding-top:max(8px,env(safe-area-inset-top));background:var(--bg-surface);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;gap:10px;flex-shrink:0}.topbar-info{display:flex;align-items:center;gap:8px;min-width:0;flex-wrap:wrap}.topbar-title{font-size:1rem;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:260px}.topbar-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}.room-body{flex:1;display:flex;overflow:hidden;position:relative}.room-stage{flex:1;display:flex;flex-direction:column;padding:14px;gap:14px;overflow-y:auto;-webkit-overflow-scrolling:touch}.screen-share-container{flex:1;min-height:240px;background:#000;border:1px solid var(--border-color);border-radius:var(--radius-lg);position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden}.screen-share-video{width:100%;height:100%;max-height:calc(100dvh - 240px);object-fit:contain}.screen-share-overlay{position:absolute;top:10px;left:10px;right:10px;display:flex;justify-content:space-between;align-items:center;gap:8px;pointer-events:none;z-index:2}.screen-share-overlay>*{pointer-events:auto}.participants-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(185px,1fr));gap:12px;align-content:start}.participants-strip{display:flex;gap:10px;overflow-x:auto;padding-bottom:4px;min-height:100px;flex-shrink:0;-webkit-overflow-scrolling:touch}.participant-card{background:var(--bg-surface);border:2px solid var(--border-color);border-radius:var(--radius-lg);padding:14px;display:flex;flex-direction:column;align-items:center;justify-content:space-between;gap:8px;min-width:155px;transition:border-color .15s ease,box-shadow .15s ease}.participant-card.speaking{border-color:var(--accent-speaking);box-shadow:0 0 0 4px var(--accent-speaking-glow)}.avatar-circle{width:52px;height:52px;border-radius:50%;background:var(--bg-elevated);border:2px solid var(--border-color);display:flex;align-items:center;justify-content:center;font-size:1.15rem;font-weight:700;flex-shrink:0}.participant-card.speaking .avatar-circle{border-color:var(--accent-speaking)}.volume-control{display:flex;align-items:center;gap:6px;width:100%;font-size:.75rem;color:var(--text-secondary)}.volume-slider{flex:1;padding:0;height:6px;cursor:pointer}.control-dock{min-height:70px;background:var(--bg-surface);border-top:1px solid var(--border-color);display:flex;align-items:center;justify-content:center;gap:12px;padding:10px 16px;padding-bottom:max(10px,env(safe-area-inset-bottom));flex-shrink:0}.dock-btn{position:relative}.unread-dot{position:absolute;top:-5px;right:-5px;min-width:20px;height:20px;padding:0 6px;border-radius:999px;background:var(--accent-danger);color:#fff;font-size:.72rem;font-weight:700;display:flex;align-items:center;justify-content:center}.chat-panel{width:370px;background:var(--bg-surface);border-left:1px solid var(--border-color);display:flex;flex-direction:column;flex-shrink:0}.chat-header{padding:12px 16px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;font-weight:600;gap:8px}.chat-close-mobile{display:none}.chat-messages{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px;-webkit-overflow-scrolling:touch}.chat-bubble{background:var(--bg-elevated);border-radius:var(--radius-md);padding:10px 12px;display:flex;flex-direction:column;gap:4px;word-break:break-word}.chat-bubble.system{background:transparent;border:1px dashed var(--border-color);color:var(--text-secondary);font-size:.8rem;text-align:center}.chat-meta{display:flex;justify-content:space-between;font-size:.75rem;color:var(--text-secondary);gap:8px}.chat-sender{font-weight:600;color:var(--text-primary)}.chat-attachment{margin-top:6px;padding:8px 10px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:.84rem}.chat-input-bar{padding:10px 12px;padding-bottom:max(10px,env(safe-area-inset-bottom));border-top:1px solid var(--border-color);display:flex;gap:8px;align-items:center}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172acc;display:flex;align-items:center;justify-content:center;z-index:200;padding:16px}.modal-box{width:100%;max-width:440px;background:var(--bg-surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:22px;display:flex;flex-direction:column;gap:16px}.recent-rooms-list{display:flex;flex-direction:column;gap:8px;margin-top:4px}.recent-room-item{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:var(--bg-elevated);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;gap:8px}.recent-room-item:hover{border-color:var(--accent-primary)}@media (max-width: 768px){.lobby-wrapper{padding:12px}.lobby-card{padding:20px 16px;gap:14px}.form-row{flex-direction:column}.form-row .btn{width:100%}.room-topbar{padding:8px 12px}.topbar-title{max-width:145px;font-size:.92rem}.hide-on-mobile{display:none!important}.room-stage{padding:10px;gap:10px}.participants-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}.participant-card{padding:12px 10px;min-width:130px}.avatar-circle{width:44px;height:44px;font-size:1rem}.chat-panel{position:fixed;top:0;right:0;bottom:0;left:0;width:100vw;height:100dvh;z-index:150;border-left:none}.chat-close-mobile{display:inline-flex}.control-dock{gap:8px;padding:8px 10px;padding-bottom:max(10px,env(safe-area-inset-bottom));justify-content:space-around}.dock-btn{flex:1;flex-direction:column;gap:4px;padding:8px 6px;font-size:.72rem;min-height:54px}.screen-share-container{min-height:200px}.screen-share-video{max-height:calc(100dvh - 270px)}}