:root{--bg: #0f1117;--surface: #1a1d27;--surface-2: #22263a;--border: #2e3250;--text: #e2e8f0;--text-muted: #94a3b8;--primary: #6366f1;--primary-hover: #4f46e5;--danger: #ef4444;--success: #22c55e;--radius: 10px;--radius-sm: 6px;--shadow: 0 4px 24px rgba(0,0,0,.4);font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;scroll-behavior:smooth}body{background:var(--bg);color:var(--text);min-height:100dvh;font-size:15px}img{display:block;max-width:100%}input,textarea,button,select{font:inherit;color:inherit}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.text-muted{color:var(--text-muted)}.text-sm{font-size:13px}.full-loader{display:flex;align-items:center;justify-content:center;height:100dvh}.spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.btn-primary{background:var(--primary);color:#fff;border:none;padding:10px 20px;border-radius:var(--radius-sm);cursor:pointer;font-weight:600;font-size:14px;transition:background .15s}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--surface-2);color:var(--text);border:1px solid var(--border);padding:10px 20px;border-radius:var(--radius-sm);cursor:pointer;font-weight:500;font-size:14px;transition:background .15s}.btn-secondary:hover{background:var(--border)}.btn-ghost{background:transparent;color:var(--text-muted);border:none;padding:8px 14px;border-radius:var(--radius-sm);cursor:pointer;font-size:14px;transition:background .15s,color .15s}.btn-ghost:hover{background:var(--surface-2);color:var(--text)}.btn-danger{background:var(--danger);color:#fff;border:none;padding:8px 16px;border-radius:var(--radius-sm);cursor:pointer;font-size:13px;transition:background .15s}.btn-danger:hover{background:#dc2626}.btn-sm{padding:4px 10px;font-size:12px}.form-group{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}.form-group label{font-size:13px;font-weight:500;color:var(--text-muted)}.form-group input,.form-group textarea,.form-group select{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 14px;font-size:14px;color:var(--text);transition:border-color .15s;width:100%}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--primary)}.form-checkbox{flex-direction:row;align-items:center;gap:10px}.form-msg{font-size:13px;color:var(--success);margin-bottom:10px}.error-banner{background:#ef444426;border:1px solid rgba(239,68,68,.4);color:#fca5a5;padding:10px 14px;border-radius:var(--radius-sm);font-size:13px;margin-bottom:14px}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.skeleton{background:linear-gradient(90deg,var(--surface) 25%,var(--surface-2) 50%,var(--surface) 75%);background-size:200% 100%;animation:shimmer 1.5s ease-in-out infinite;border-radius:var(--radius-sm)}.room-skeleton{height:120px}.message-skeleton{height:48px;margin-bottom:10px}.auth-page{display:flex;align-items:center;justify-content:center;min-height:100dvh;padding:20px}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:40px;width:100%;max-width:400px;box-shadow:var(--shadow)}.auth-logo{text-align:center;margin-bottom:28px}.auth-logo h1{font-size:28px;font-weight:700;margin-top:8px}.auth-logo p{color:var(--text-muted);font-size:14px;margin-top:4px}.logo-icon{font-size:40px}.auth-form h2{font-size:20px;font-weight:600;margin-bottom:20px}.auth-switch{text-align:center;font-size:13px;color:var(--text-muted);margin-top:16px}.navbar{display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:56px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}.nav-logo{font-size:18px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px}.nav-center{display:flex;gap:4px}.nav-link{padding:8px 14px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;color:var(--text-muted);transition:background .15s,color .15s}.nav-link:hover{background:var(--surface-2);color:var(--text);text-decoration:none}.nav-right{display:flex;align-items:center;gap:12px}.nav-avatar{width:34px;height:34px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;color:#fff;cursor:pointer}.connection-dot{width:8px;height:8px;border-radius:50%;display:inline-block}.connection-dot.online{background:var(--success)}.connection-dot.offline{background:var(--danger)}.home-page{min-height:100dvh}.home-container{max-width:1100px;margin:0 auto;padding:32px 24px}.home-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px;flex-wrap:wrap;gap:16px}.home-header h2{font-size:24px;font-weight:700}.home-actions{display:flex;gap:10px}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.section-header h3{font-size:16px;font-weight:600}.rooms-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.room-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;cursor:pointer;transition:border-color .15s,box-shadow .15s}.room-card:hover{border-color:var(--primary);box-shadow:0 0 0 1px var(--primary)}.room-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}.room-card-header h4{font-size:15px;font-weight:600}.room-code{font-size:12px;color:var(--text-muted);font-family:monospace;background:var(--surface-2);padding:2px 8px;border-radius:4px}.room-topic{font-size:13px;color:var(--text-muted);margin-bottom:12px}.room-card-footer{display:flex;justify-content:space-between;font-size:12px;color:var(--text-muted)}.empty-state{text-align:center;padding:64px 24px}.empty-icon{font-size:48px;display:block;margin-bottom:12px}.empty-state h4{font-size:18px;font-weight:600;margin-bottom:8px}.empty-state p{color:var(--text-muted);margin-bottom:20px}.chatroom-layout{display:flex;flex-direction:column;height:100dvh;overflow:hidden}.room-header{display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:52px;background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0}.room-info{display:flex;align-items:center;gap:12px}.room-info h2{font-size:16px;font-weight:600}.room-topic{font-size:13px;color:var(--text-muted)}.room-controls{display:flex;gap:8px}.chatroom-body{display:flex;flex:1;overflow:hidden}.chat-main{display:flex;flex-direction:column;flex:1;overflow:hidden}.chat-loading{padding:20px;display:flex;flex-direction:column;gap:10px}.message-list{flex:1;overflow-y:auto;padding:16px 20px;display:flex;flex-direction:column;gap:4px}.load-more-btn{align-self:center;background:none;border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px 16px;font-size:12px;color:var(--text-muted);cursor:pointer;margin-bottom:8px}.message{display:flex;align-items:flex-start;gap:10px;padding:4px 0;position:relative}.message.own{flex-direction:row-reverse}.msg-avatar{width:32px;height:32px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;color:#fff;flex-shrink:0}.msg-body{display:flex;flex-direction:column;max-width:70%}.msg-sender{font-size:12px;font-weight:600;color:var(--primary);margin-bottom:3px}.msg-bubble{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:10px 14px;font-size:14px;line-height:1.5}.message.own .msg-bubble{background:var(--primary);border-color:var(--primary);color:#fff}.msg-bubble.deleted{opacity:.5;font-style:italic}.msg-bubble p{word-break:break-word}.edited-tag{font-size:11px;opacity:.6}.reply-preview{font-size:12px;background:#ffffff14;border-left:3px solid var(--primary);padding:4px 8px;border-radius:4px;margin-bottom:6px;color:var(--text-muted)}.msg-time{font-size:11px;color:var(--text-muted);margin-top:4px;align-self:flex-end}.msg-actions{display:flex;gap:4px;position:absolute;top:-4px;right:0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:4px;z-index:10}.message.own .msg-actions{left:0;right:auto}.msg-actions button{background:none;border:none;cursor:pointer;padding:4px 6px;font-size:14px;border-radius:4px}.msg-actions button:hover{background:var(--surface-2)}.reactions{display:flex;flex-wrap:wrap;gap:4px;margin-top:4px}.reaction-pill{background:var(--surface-2);border:1px solid var(--border);border-radius:20px;padding:2px 8px;font-size:13px;cursor:pointer;transition:background .15s}.reaction-pill:hover{background:var(--border)}.reaction-picker{position:absolute;top:100%;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px;display:flex;gap:4px;z-index:20}.system-msg{text-align:center;font-size:12px;color:var(--text-muted);padding:8px;font-style:italic}.typing-indicator{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);padding:8px 0}.typing-dots{display:flex;gap:3px}.typing-dots span{width:6px;height:6px;background:var(--text-muted);border-radius:50%;animation:bounce .8s ease-in-out infinite}.typing-dots span:nth-child(2){animation-delay:.15s}.typing-dots span:nth-child(3){animation-delay:.3s}@keyframes bounce{0%,80%,to{transform:translateY(0)}40%{transform:translateY(-6px)}}.msg-edit{display:flex;gap:8px;align-items:center}.edit-input{flex:1;background:var(--surface-2);border:1px solid var(--primary);border-radius:var(--radius-sm);padding:8px 12px;font-size:14px;color:var(--text)}.message-input-area{display:flex;align-items:flex-end;gap:10px;padding:12px 20px;background:var(--surface);border-top:1px solid var(--border)}.message-input{flex:1;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;font-size:14px;color:var(--text);resize:none;line-height:1.5;transition:border-color .15s}.message-input:focus{outline:none;border-color:var(--primary)}.send-btn{background:var(--primary);color:#fff;border:none;width:42px;height:42px;border-radius:50%;cursor:pointer;font-size:18px;flex-shrink:0;transition:background .15s}.send-btn:hover{background:var(--primary-hover)}.send-btn:disabled{opacity:.4;cursor:not-allowed}.users-sidebar{width:220px;background:var(--surface);border-left:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0}.sidebar-header{padding:16px;border-bottom:1px solid var(--border)}.sidebar-header h4{font-size:13px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}.users-list{flex:1;overflow-y:auto;padding:8px}.user-item{display:flex;align-items:center;gap:10px;padding:8px;border-radius:var(--radius-sm);transition:background .15s}.user-item:hover{background:var(--surface-2)}.user-avatar{width:30px;height:30px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12px;color:#fff;flex-shrink:0}.user-name{flex:1;font-size:14px}.user-actions{display:flex;gap:4px;opacity:0;transition:opacity .15s}.user-item:hover .user-actions{opacity:1}.video-panel{background:var(--surface-2);border-bottom:1px solid var(--border);padding:12px 16px}.video-input-row{display:flex;gap:8px;margin-bottom:10px}.video-input{flex:1;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 12px;font-size:13px;color:var(--text)}.video-frame{width:100%;height:320px;border:none;border-radius:var(--radius)}.video-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;height:160px;gap:8px;color:var(--text-muted);font-size:14px}.video-placeholder span{font-size:36px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px;width:100%;max-width:440px;box-shadow:var(--shadow)}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.modal-header h3{font-size:18px;font-weight:600}.modal-close{background:none;border:none;cursor:pointer;font-size:18px;color:var(--text-muted);padding:4px}.modal-close:hover{color:var(--text)}.modal-footer{display:flex;gap:10px;justify-content:flex-end;margin-top:8px}.code-input{text-transform:uppercase;font-family:monospace;font-size:20px;letter-spacing:.2em;text-align:center}.dm-layout{display:flex;flex-direction:column;height:100dvh}.dm-body{display:flex;flex:1;overflow:hidden}.dm-sidebar{width:260px;background:var(--surface);border-right:1px solid var(--border);padding:20px 12px;overflow-y:auto;flex-shrink:0}.dm-sidebar h3{font-size:14px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;padding:0 8px;margin-bottom:12px}.conv-item{display:flex;align-items:center;gap:10px;padding:10px;border-radius:var(--radius-sm);transition:background .15s;cursor:pointer}.conv-item:hover{background:var(--surface-2);text-decoration:none}.conv-avatar{width:36px;height:36px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;color:#fff;flex-shrink:0}.conv-info{flex:1;overflow:hidden}.conv-name{display:block;font-size:14px;font-weight:500;color:var(--text)}.conv-preview{display:block;font-size:12px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.unread-badge{background:var(--primary);color:#fff;border-radius:50%;width:20px;height:20px;font-size:11px;display:flex;align-items:center;justify-content:center;font-weight:700}.dm-main{display:flex;flex-direction:column;flex:1;overflow:hidden}.dm-messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:8px}.dm-bubble{display:flex;flex-direction:column;max-width:70%}.dm-bubble.own{align-self:flex-end}.dm-bubble.other{align-self:flex-start}.bubble-content{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:10px 14px;font-size:14px;line-height:1.5;word-break:break-word}.dm-bubble.own .bubble-content{background:var(--primary);border-color:var(--primary);color:#fff}.bubble-time{font-size:11px;color:var(--text-muted);margin-top:3px;align-self:flex-end}.dm-input-row{display:flex;gap:10px;padding:12px 20px;background:var(--surface);border-top:1px solid var(--border)}.dm-input{flex:1;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius);padding:12px 16px;font-size:14px;color:var(--text);transition:border-color .15s}.dm-input:focus{outline:none;border-color:var(--primary)}.profile-page{min-height:100dvh}.profile-container{max-width:700px;margin:0 auto;padding:32px 24px}.profile-header{display:flex;align-items:center;gap:20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:24px}.profile-avatar{width:64px;height:64px;background:var(--primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:700;color:#fff;flex-shrink:0}.profile-header h2{font-size:22px;font-weight:700}.status-badge{font-size:12px;padding:2px 10px;border-radius:20px;font-weight:500}.status-badge.online{background:#22c55e26;color:var(--success)}.status-badge.offline{background:#94a3b81a;color:var(--text-muted)}.profile-sections{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:24px}.profile-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px}.profile-card h3{font-size:15px;font-weight:600;margin-bottom:20px}@media (max-width: 600px){.profile-sections{grid-template-columns:1fr}}.not-found{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100dvh;gap:12px;text-align:center;padding:24px}.not-found h1{font-size:80px;font-weight:800;color:var(--primary);line-height:1}.not-found h2{font-size:24px;font-weight:600}.not-found p{color:var(--text-muted);margin-bottom:8px}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@media (max-width: 768px){.users-sidebar{display:none}.dm-sidebar{width:200px}.home-header{flex-direction:column;align-items:flex-start}.nav-center{display:none}}