:root{--bg-main: #0e0e12;--bg-panel: #16161c;--bg-hover: #1e1e26;--bg-input: #1a1a22;--border: #2a2a36;--text: #e8e8ed;--text-muted: #8888a0;--accent: #3b82f6;--accent-hover: #2563eb;--outgoing: #1e3a5f;--incoming: #1e1e28}*{box-sizing:border-box}body{margin:0;font-family:Manrope,-apple-system,sans-serif;background:var(--bg-main);color:var(--text);min-height:100vh;overflow:hidden}#root{height:100vh;display:flex;flex-direction:column}input,button,textarea{font-family:inherit}button{cursor:pointer;border:none;background:none}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.app{display:flex;height:100vh;max-width:1200px;margin:0 auto;width:100%;border-radius:12px;overflow:hidden;box-shadow:0 0 0 1px var(--border)}.sidebar{width:360px;min-width:280px;background:var(--bg-panel);border-right:1px solid var(--border);display:flex;flex-direction:column}.sidebar-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.sidebar-title{font-size:1.25rem;font-weight:700;letter-spacing:-.02em}.chat-list{flex:1;overflow-y:auto}.chat-item{display:flex;align-items:center;gap:14px;padding:14px 20px;cursor:pointer;border-bottom:1px solid var(--border);transition:background .15s}.chat-item:hover{background:var(--bg-hover)}.chat-item.active{background:var(--bg-hover);border-left:3px solid var(--accent)}.chat-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--accent) 0%,#6366f1 100%);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem;flex-shrink:0}.chat-avatar.group{border-radius:12px;font-size:1.25rem}.chat-info{flex:1;min-width:0}.chat-name{font-weight:600;font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-preview{font-size:.85rem;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}.main{flex:1;display:flex;flex-direction:column;background:var(--bg-main);min-width:0}.main-header{padding:14px 20px;border-bottom:1px solid var(--border);background:var(--bg-panel);display:flex;align-items:center;gap:12px}.main-placeholder{flex:1;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:.95rem}.messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:8px}.message{max-width:75%;align-self:flex-start;padding:10px 14px;border-radius:14px 14px 14px 4px;background:var(--incoming);font-size:.95rem;line-height:1.4}.message.mine{align-self:flex-end;border-radius:14px 14px 4px;background:var(--outgoing)}.message-sender{font-size:.75rem;color:var(--accent);margin-bottom:4px;font-weight:600}.message.mine .message-sender{display:none}.message-time{font-size:.7rem;color:var(--text-muted);margin-top:4px}.message.deleted .message-deleted-text{font-style:italic;color:var(--text-muted)}.message-forwarded{font-size:.75rem;color:var(--text-muted);margin-bottom:4px}.message-reply-block{border-left:3px solid var(--accent);padding:4px 8px;margin-bottom:6px;background:#ffffff0d;border-radius:0 8px 8px 0;cursor:pointer}.message-reply-author{font-size:.75rem;color:var(--accent);display:block}.message-reply-content{font-size:.85rem;opacity:.9}.message-body{word-break:break-word}.message-edited{font-size:.75rem;color:var(--text-muted)}.message-media{max-width:100%;border-radius:8px;display:block}.message-photo{max-height:300px;object-fit:contain}.message-video{max-height:240px;width:100%}.message-voice{width:100%;margin-top:4px}.message-media-link{display:block}.message-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:4px}.message-reactions{display:flex;gap:4px;flex-wrap:wrap}.message-reaction{font-size:.85rem;padding:2px 6px;border-radius:10px;background:var(--bg-hover);border:none;cursor:pointer}.message-actions{display:none;gap:4px;margin-top:4px;flex-wrap:wrap}.message:hover .message-actions{display:flex}.msg-action{padding:4px 8px;border-radius:6px;background:var(--bg-hover);border:none;color:var(--text);cursor:pointer;font-size:.9rem}.message-reaction-picker{display:inline-flex;gap:2px}.message-edit-row{display:flex;gap:8px;align-items:center;margin-top:8px}.message-edit-input{flex:1;padding:8px;border-radius:8px;border:1px solid var(--border);background:var(--bg-input);color:var(--text)}.btn-send.small,.btn-secondary.small{padding:6px 12px;font-size:.85rem}.reply-preview,.attach-preview{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background:var(--bg-hover);border-radius:8px;margin-bottom:8px;font-size:.9rem}.reply-cancel{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px}.attach-btn{width:44px;height:44px;border-radius:12px;background:var(--bg-hover);border:1px solid var(--border);color:var(--text);font-size:1.2rem;cursor:pointer;flex-shrink:0}.attach-btn.recording{background:#dc2626;color:#fff}.pinned-strip{padding:8px 12px;background:var(--bg-panel);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px;flex-wrap:wrap}.pinned-item{background:var(--bg-hover);border:1px solid var(--border);border-radius:8px;padding:6px 10px;font-size:.85rem;color:var(--text);cursor:pointer}.search-strip{padding:8px 12px;border-bottom:1px solid var(--border)}.search-input{width:100%;padding:8px 12px;border-radius:8px;border:1px solid var(--border);background:var(--bg-input);color:var(--text);font-size:.9rem}.forward-chat-btn{display:block;width:100%;text-align:left;padding:12px 14px;border:none;border-bottom:1px solid var(--border);background:none;color:var(--text);cursor:pointer}.forward-chat-btn:hover{background:var(--bg-hover)}.input-area{padding:16px 20px;border-top:1px solid var(--border);background:var(--bg-panel)}.input-row{display:flex;gap:10px;align-items:flex-end}.input-row textarea{flex:1;min-height:44px;max-height:120px;padding:12px 16px;border-radius:12px;border:1px solid var(--border);background:var(--bg-input);color:var(--text);font-size:.95rem;resize:none;outline:none;transition:border-color .2s}.input-row textarea:focus{border-color:var(--accent)}.input-row textarea::placeholder{color:var(--text-muted)}.btn-send{padding:12px 20px;border-radius:12px;background:var(--accent);color:#fff;font-weight:600;font-size:.9rem;flex-shrink:0}.btn-send:hover{background:var(--accent-hover)}.btn-send:disabled{opacity:.5;cursor:not-allowed}.auth-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.auth-box{width:100%;max-width:380px;background:var(--bg-panel);border:1px solid var(--border);border-radius:16px;padding:32px}.auth-title{font-size:1.5rem;font-weight:700;margin-bottom:24px;text-align:center}.auth-form .field{margin-bottom:16px}.auth-form label{display:block;font-size:.85rem;font-weight:500;color:var(--text-muted);margin-bottom:6px}.auth-form input{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--border);background:var(--bg-input);color:var(--text);font-size:1rem}.auth-form input:focus{outline:none;border-color:var(--accent)}.auth-form .btn-primary{width:100%;padding:14px;border-radius:10px;background:var(--accent);color:#fff;font-weight:600;font-size:1rem;margin-top:8px}.auth-form .btn-primary:hover{background:var(--accent-hover)}.auth-tabs{display:flex;gap:0;margin-bottom:24px;background:var(--bg-input);border-radius:10px;padding:4px}.auth-tabs button{flex:1;padding:10px 16px;border-radius:8px;font-weight:600;color:var(--text-muted)}.auth-tabs button.active{background:var(--bg-panel);color:var(--text);box-shadow:0 1px 3px #0003}.auth-error{background:#ef444426;color:#f87171;padding:10px 14px;border-radius:8px;font-size:.9rem;margin-bottom:16px}.btn-secondary{padding:10px 18px;border-radius:10px;background:var(--bg-hover);color:var(--text);font-weight:500;border:1px solid var(--border)}.btn-secondary:hover{background:var(--border)}.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(--bg-panel);border:1px solid var(--border);border-radius:16px;padding:24px;width:100%;max-width:420px;max-height:90vh;overflow-y:auto}.modal h3{margin:0 0 20px;font-size:1.2rem}.modal .field{margin-bottom:14px}.modal .field label{display:block;font-size:.85rem;color:var(--text-muted);margin-bottom:6px}.modal .field input,.modal .field select{width:100%;padding:10px 12px;border-radius:8px;border:1px solid var(--border);background:var(--bg-input);color:var(--text)}.user-list{max-height:200px;overflow-y:auto;border:1px solid var(--border);border-radius:8px;margin-top:8px}.user-list label{display:flex;align-items:center;gap:10px;padding:10px 14px;cursor:pointer;border-bottom:1px solid var(--border);margin:0}.user-list label:last-child{border-bottom:none}.user-list input{width:auto}.modal-actions{display:flex;gap:10px;margin-top:20px;justify-content:flex-end}.logout-btn{padding:8px 14px;border-radius:8px;font-size:.9rem;color:var(--text-muted)}.logout-btn:hover{background:var(--bg-hover);color:var(--text)}.main-header-call-btns{display:flex;gap:8px}.call-header-btn{width:40px;height:40px;border-radius:50%;background:var(--bg-hover);border:1px solid var(--border);color:var(--text);font-size:1.2rem;display:flex;align-items:center;justify-content:center}.call-header-btn:hover{background:var(--accent);color:#fff}.call-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;background:var(--bg-main);display:flex;flex-direction:column;align-items:center;justify-content:center}.call-incoming{background:#000000e6}.call-incoming-box{text-align:center;padding:32px}.call-incoming-avatar{width:80px;height:80px;border-radius:50%;background:linear-gradient(135deg,var(--accent),#6366f1);display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:700;margin:0 auto 16px}.call-incoming-name{font-size:1.25rem;font-weight:600;margin:0 0 8px}.call-incoming-type{color:var(--text-muted);margin:0 0 24px}.call-incoming-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}.call-btn{width:56px;height:56px;border-radius:50%;border:none;font-size:1.5rem;cursor:pointer;display:flex;align-items:center;justify-content:center}.call-btn-decline{background:#dc2626;color:#fff}.call-btn-accept-voice{background:var(--accent);color:#fff}.call-btn-accept-video{background:#059669;color:#fff}.call-active{padding:16px}.call-joining-msg{position:absolute;top:20px;left:50%;transform:translate(-50%);background:#000000b3;padding:8px 16px;border-radius:8px;font-size:.9rem}.call-grid{flex:1;width:100%;max-width:1000px;display:grid;gap:8px;align-content:center;justify-content:center}.call-grid-single{grid-template-columns:1fr;max-width:400px;margin:0 auto}.call-grid-two,.call-grid-multi{grid-template-columns:repeat(2,1fr)}@media (min-width: 700px){.call-grid-multi{grid-template-columns:repeat(2,1fr)}}.call-video-tile{position:relative;background:var(--bg-panel);border-radius:12px;overflow:hidden;aspect-ratio:4/3;max-height:40vh}.call-video-tile video{width:100%;height:100%;object-fit:cover}.call-video-mirror{transform:scaleX(-1)}.call-video-label{position:absolute;bottom:8px;left:8px;font-size:.8rem;background:#0009;padding:4px 8px;border-radius:6px}.call-controls{display:flex;gap:16px;justify-content:center;padding:20px;flex-shrink:0}.call-control-btn{width:56px;height:56px;border-radius:50%;background:var(--bg-hover);border:1px solid var(--border);color:var(--text);font-size:1.25rem;cursor:pointer}.call-control-btn.off,.call-control-hangup{background:#dc2626;color:#fff}.sidebar-toggle{display:none;position:fixed;top:12px;left:12px;z-index:40;width:44px;height:44px;border-radius:12px;background:var(--bg-panel);border:1px solid var(--border);color:var(--text);font-size:1.25rem;cursor:pointer}@media (max-width: 768px){.app{max-width:none;border-radius:0}.sidebar-toggle{display:flex;align-items:center;justify-content:center}.sidebar{position:fixed;left:0;top:0;bottom:0;z-index:50;width:100%;max-width:320px;transform:translate(-100%);transition:transform .2s;box-shadow:4px 0 20px #0000004d}.sidebar.open{transform:translate(0)}.sidebar-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:45}.main{min-width:0}.sidebar-header{flex-wrap:wrap;gap:8px}.main-header-call-btns{flex-shrink:0}}@media (min-width: 769px){.sidebar-toggle,.sidebar-backdrop{display:none}}.link-preview{display:block;margin-top:8px;border:1px solid var(--border);border-radius:10px;overflow:hidden;text-decoration:none;color:inherit;max-width:320px}.link-preview-img{width:100%;max-height:160px;object-fit:cover;display:block}.link-preview-text{padding:10px 12px;display:flex;flex-direction:column;gap:4px}.link-preview-title{font-size:.9rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.link-preview-desc{font-size:.8rem;color:var(--text-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.settings-toggles{display:flex;flex-direction:column;gap:12px;margin-bottom:16px}.settings-toggle{display:flex;align-items:center;gap:10px;cursor:pointer;margin:0}.settings-toggle input{width:auto}.chat-avatar-img{object-fit:cover}[data-theme=light]{--bg-main: #f0f2f5;--bg-panel: #ffffff;--bg-hover: #f0f2f5;--bg-input: #f0f2f5;--border: #e0e0e8;--text: #1a1a2e;--text-muted: #6b7280;--accent: #2563eb;--accent-hover: #1d4ed8;--outgoing: #d1e8ff;--incoming: #ffffff}[data-theme=light] .message{box-shadow:0 1px 2px #00000014}.chat-avatar-wrap{position:relative;flex-shrink:0}.online-dot{position:absolute;bottom:2px;right:2px;width:11px;height:11px;border-radius:50%;background:#22c55e;border:2px solid var(--bg-panel)}.chat-meta{display:flex;flex-direction:column;align-items:flex-end;gap:4px;flex-shrink:0}.chat-time{font-size:.72rem;color:var(--text-muted);white-space:nowrap}.unread-badge{background:var(--accent);color:#fff;font-size:.7rem;font-weight:700;min-width:18px;height:18px;border-radius:9px;display:flex;align-items:center;justify-content:center;padding:0 5px}.typing-indicator{font-size:.8rem;color:var(--accent);padding:4px 20px 0;min-height:20px;font-style:italic}.read-receipt{font-size:.75rem;color:var(--text-muted);margin-left:4px}.read-receipt.read{color:var(--accent)}.date-separator{display:flex;align-items:center;gap:12px;margin:12px 0 4px;color:var(--text-muted);font-size:.78rem}.date-separator:before,.date-separator:after{content:"";flex:1;height:1px;background:var(--border)}.message-file{display:flex;align-items:center;gap:10px;background:#ffffff0f;border-radius:10px;padding:10px 12px;text-decoration:none;color:inherit;margin-top:4px}.message-file:hover{background:#ffffff1a;text-decoration:none}.message-file-icon{font-size:1.6rem;flex-shrink:0}.message-file-info{display:flex;flex-direction:column;min-width:0}.message-file-name{font-size:.88rem;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:200px}.message-file-size{font-size:.75rem;color:var(--text-muted);margin-top:2px}.emoji-picker-wrap{position:relative}.emoji-picker{position:absolute;bottom:calc(100% + 8px);left:0;width:320px;max-height:320px;background:var(--bg-panel);border:1px solid var(--border);border-radius:14px;box-shadow:0 8px 32px #0000004d;display:flex;flex-direction:column;overflow:hidden;z-index:60}.emoji-search-row{padding:10px 10px 6px}.emoji-search{width:100%;padding:8px 12px;border-radius:8px;border:1px solid var(--border);background:var(--bg-input);color:var(--text);font-size:.9rem;outline:none}.emoji-picker-tabs{display:flex;gap:2px;padding:0 8px 6px;border-bottom:1px solid var(--border)}.emoji-picker-tab{flex:1;padding:6px;border-radius:8px;font-size:1.1rem;background:none;border:none;cursor:pointer;opacity:.5;transition:opacity .15s,background .15s}.emoji-picker-tab:hover{opacity:.8;background:var(--bg-hover)}.emoji-picker-tab.active{opacity:1;background:var(--bg-hover)}.emoji-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:2px;padding:8px;overflow-y:auto;flex:1}.emoji-btn{padding:6px;border-radius:6px;font-size:1.2rem;background:none;border:none;cursor:pointer;transition:background .1s;display:flex;align-items:center;justify-content:center}.emoji-btn:hover{background:var(--bg-hover)}.mention-dropdown{position:absolute;bottom:calc(100% + 4px);left:0;right:0;background:var(--bg-panel);border:1px solid var(--border);border-radius:10px;box-shadow:0 4px 20px #00000040;z-index:55;max-height:200px;overflow-y:auto}.mention-item{padding:10px 14px;cursor:pointer;font-size:.9rem;border-bottom:1px solid var(--border);transition:background .1s}.mention-item:last-child{border-bottom:none}.mention-item:hover{background:var(--bg-hover)}.md-bold{font-weight:700}.md-italic{font-style:italic}.md-code{font-family:JetBrains Mono,Fira Code,monospace;font-size:.88em;background:#ffffff1a;padding:1px 5px;border-radius:4px}[data-theme=light] .md-code{background:#00000014}.md-code-block{font-family:JetBrains Mono,Fira Code,monospace;font-size:.85em;background:#00000040;padding:12px 14px;border-radius:8px;overflow-x:auto;margin:6px 0;white-space:pre}[data-theme=light] .md-code-block{background:#0000000f}.global-search-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000a6;display:flex;align-items:flex-start;justify-content:center;z-index:110;padding:60px 20px 20px}.global-search-box{background:var(--bg-panel);border:1px solid var(--border);border-radius:16px;width:100%;max-width:540px;max-height:70vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 16px 48px #0006}.global-search-input{width:100%;padding:16px 20px;font-size:1rem;border:none;border-bottom:1px solid var(--border);background:transparent;color:var(--text);outline:none}.global-search-results{overflow-y:auto;flex:1}.search-result-item{padding:12px 20px;cursor:pointer;border-bottom:1px solid var(--border);transition:background .1s}.search-result-item:last-child{border-bottom:none}.search-result-item:hover{background:var(--bg-hover)}.search-result-chat{font-size:.75rem;color:var(--accent);margin-bottom:3px;font-weight:600}.search-result-text{font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.search-result-time{font-size:.72rem;color:var(--text-muted);margin-top:3px}.search-no-results{padding:32px 20px;text-align:center;color:var(--text-muted);font-size:.9rem}.user-avatar-sm{width:32px;height:32px;border-radius:50%;object-fit:cover;flex-shrink:0}.user-avatar-sm-placeholder{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--accent),#6366f1);display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700;flex-shrink:0}.user-list-item{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid var(--border)}.user-list-item:last-child{border-bottom:none}.group-member-row{display:flex;align-items:center;gap:10px;padding:10px 14px;border-bottom:1px solid var(--border)}.group-member-row:last-child{border-bottom:none}.group-member-name{flex:1;font-size:.9rem}.btn-danger-sm{padding:4px 10px;border-radius:6px;background:#dc262626;color:#f87171;border:1px solid rgba(220,38,38,.3);font-size:.8rem;cursor:pointer;transition:background .15s}.btn-danger-sm:hover{background:#dc26264d}.load-more-hint{text-align:center;padding:8px;font-size:.8rem;color:var(--text-muted);cursor:pointer}.loading-more{text-align:center;padding:8px;font-size:.8rem;color:var(--text-muted)}.reaction-count{font-size:.8rem}.settings-avatar-section{display:flex;flex-direction:column;align-items:center;gap:10px;margin-bottom:20px}.settings-avatar-preview{width:72px;height:72px;border-radius:50%;object-fit:cover}.settings-avatar-placeholder{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,var(--accent),#6366f1);display:flex;align-items:center;justify-content:center;font-size:1.6rem;font-weight:700}.theme-btn{padding:8px 14px;border-radius:8px;font-size:.9rem;color:var(--text-muted);background:var(--bg-hover);border:1px solid var(--border)}.theme-btn:hover{color:var(--text)}.icon-btn{width:36px;height:36px;border-radius:10px;background:var(--bg-hover);border:1px solid var(--border);color:var(--text);font-size:1rem;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0}.icon-btn:hover{background:var(--border)}