:root{--bg-primary: #17212b;--bg-secondary: #0e1621;--bg-chat: #0e1621;--bg-input: #242f3d;--bg-message-own: #2b5278;--bg-message-other: #182533;--bg-hover: #202b36;--text-primary: #f5f5f5;--text-secondary: #8b9bab;--text-muted: #5c6e7e;--accent: #5B8DEF;--accent-hover: #1e96d1;--border: #1e2c3a;--danger: #e53935;--success: #4caf50;--video-note-radius: 50%;--video-note-size: 220px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:var(--bg-primary);color:var(--text-primary);height:100vh;overflow:hidden}#root{height:100vh;touch-action:pan-x pan-y}.loading{display:flex;align-items:center;justify-content:center;height:100vh;color:var(--text-secondary);font-size:16px}.auth-page{display:flex;align-items:center;justify-content:center;height:100vh;background:var(--bg-secondary)}.auth-card{background:var(--bg-primary);border-radius:12px;padding:40px;width:100%;max-width:400px;box-shadow:0 4px 24px #0000004d}.auth-logo{display:flex;justify-content:center;margin-bottom:24px}.auth-card h1{text-align:center;margin-bottom:8px;font-size:24px;font-weight:600}.auth-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:24px;font-size:14px}.auth-error{background:#e539351a;color:var(--danger);padding:10px 14px;border-radius:8px;margin-bottom:16px;font-size:14px;border:1px solid rgba(229,57,53,.2)}.auth-success{background:#4caf501a;color:var(--success);padding:10px 14px;border-radius:8px;margin-bottom:16px;font-size:14px;border:1px solid rgba(76,175,80,.2)}.auth-info{background:#5b8def1a;color:var(--accent);padding:10px 14px;border-radius:8px;margin-bottom:16px;font-size:14px;border:1px solid rgba(91,141,239,.2)}.auth-card form{display:flex;flex-direction:column;gap:12px}.auth-card input{background:var(--bg-input);border:1px solid var(--border);border-radius:8px;padding:12px 16px;color:var(--text-primary);font-size:15px;outline:none;transition:border-color .2s}.auth-card input:focus{border-color:var(--accent)}.auth-card input::placeholder{color:var(--text-muted)}.auth-card button{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:12px;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s;margin-top:8px}.auth-card button:hover:not(:disabled){background:var(--accent-hover)}.auth-card button:disabled{opacity:.5;cursor:not-allowed}.auth-switch{text-align:center;margin-top:20px;color:var(--text-secondary);font-size:14px}.auth-switch a{color:var(--accent);text-decoration:none}.auth-switch a:hover{text-decoration:underline}.auth-divider{display:flex;align-items:center;margin:20px 0;gap:12px}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--border)}.auth-divider span{color:var(--text-muted);font-size:13px}.chat-layout{display:flex;height:100vh}.sidebar{width:320px;min-width:320px;background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;position:relative}.sidebar-header{display:flex;align-items:center;justify-content:flex-start;padding:12px 16px;border-bottom:1px solid var(--border);height:56px}.sidebar-user{display:flex;align-items:center;gap:10px;min-width:0}.sidebar-user .username{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.avatar{width:36px;height:36px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:16px;color:#fff}.username{font-weight:500;font-size:15px}.socket-dot{width:9px;height:9px;min-width:9px;border-radius:50%;background:var(--text-muted);transition:background .2s}.socket-dot.connected{background:#3fb950}.socket-dot.connecting{background:#d29922}.socket-dot.disconnected{background:var(--danger)}.push-help-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}.push-help{width:100%;max-width:360px;padding:20px;background:var(--bg-primary);border:1px solid var(--border);border-radius:12px;color:#e8eef4;box-shadow:0 10px 40px #00000080}.push-help h3{margin:0 0 10px;font-size:17px}.push-help p{margin:0 0 10px;font-size:14px;line-height:1.4;color:var(--text-secondary)}.push-help button{margin-top:6px;width:100%;padding:10px;border:none;border-radius:8px;background:var(--accent);color:#fff;font-size:15px;cursor:pointer}.push-help button:hover{background:var(--accent-hover)}.sidebar-actions{flex-shrink:0;margin-left:auto;display:flex;gap:4px}.icon-btn{background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:8px;border-radius:8px;display:flex;align-items:center;justify-content:center;transition:all .2s}.icon-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.icon-btn.active{background:var(--bg-hover);color:var(--accent)}.chat-list{flex:1;overflow-y:auto}.chat-list::-webkit-scrollbar{width:6px}.chat-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.chat-list-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:200px;color:var(--text-secondary)}.chat-list-empty button{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:8px 16px;margin-top:12px;cursor:pointer;font-size:14px}.chat-list-item{display:flex;align-items:center;gap:12px;padding:10px 16px;cursor:pointer;transition:background .15s;border-bottom:1px solid var(--border)}.chat-list-item:hover{background:var(--bg-hover)}.chat-list-item.active{background:var(--accent)}.chat-list-avatar{width:48px;height:48px;min-width:48px;border-radius:50%;background:var(--bg-input);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:20px;color:var(--text-secondary)}.chat-list-item.active .chat-list-avatar{background:#fff3;color:#fff}.saved-avatar{width:48px;height:48px;min-width:48px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center}.chat-list-item.active .saved-avatar{background:#fff3}.chat-list-info{flex:1;min-width:0}.chat-list-name{font-weight:500;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-list-item.active .chat-list-name{color:#fff}.chat-list-preview{color:var(--text-secondary);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}.chat-list-item.active .chat-list-preview{color:#ffffffb3}.chat-list-draft{color:var(--danger)}.chat-list-item.active .chat-list-draft{color:#ffb3b0}.chat-list-time{color:var(--text-muted);font-size:12px;white-space:nowrap}.chat-list-item.active .chat-list-time{color:#fff9}.chat-list-meta{display:flex;flex-direction:column;align-items:flex-end;gap:5px;flex-shrink:0}.chat-list-badge{min-width:20px;height:20px;padding:0 6px;border-radius:10px;background:var(--accent);color:#fff;font-size:12px;font-weight:600;line-height:1;display:inline-flex;align-items:center;justify-content:center}.chat-list-item.active .chat-list-badge{background:#ffffff40;color:#fff}.chat-list-muted{font-size:13px;line-height:1;opacity:.6}.chat-list-item.active .chat-list-muted{opacity:.85}.archive-header{display:flex;align-items:center;gap:10px;padding:10px 16px;cursor:pointer;-webkit-user-select:none;user-select:none;color:var(--text-secondary);font-size:14px;font-weight:600;border-bottom:1px solid var(--border);transition:background .15s}.archive-header:hover{background:var(--bg-hover)}.archive-chevron{display:inline-block;font-size:10px;transition:transform .15s;transform:rotate(0)}.archive-chevron.open{transform:rotate(90deg)}.archive-title{flex:1}.archive-count{min-width:20px;height:20px;padding:0 6px;border-radius:10px;background:var(--bg-input);color:var(--text-secondary);font-size:12px;font-weight:600;line-height:1;display:inline-flex;align-items:center;justify-content:center}.unread-divider{display:flex;align-items:center;gap:10px;margin:10px 4px;color:var(--danger);font-size:12px;font-weight:600}.tab-bar{display:flex;gap:4px;padding:0 16px;border-bottom:1px solid var(--border)}.tab-btn{flex:1;padding:10px 8px;background:none;border:none;border-bottom:2px solid transparent;color:var(--text-secondary);font-size:14px;font-weight:600;cursor:pointer}.tab-btn.active{color:var(--accent, #5caae5);border-bottom-color:var(--accent, #5caae5)}.system-line{text-align:center;margin:8px auto;padding:3px 12px;max-width:80%;align-self:center;color:var(--text-secondary, #8a8a8a);font-size:12px}.announcement-post{align-self:stretch;margin:10px 0;padding:12px 14px;border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:10px;background:var(--bg-primary)}.announcement-post-text{word-wrap:break-word;color:var(--text-primary);font-size:15px;line-height:1.45}.announcement-post-time{margin-top:6px;text-align:right;color:var(--text-muted);font-size:11px}.chat-members.announcement-note{color:var(--text-muted)}.readonly-composer{display:flex;align-items:center;justify-content:center;padding:14px 20px;border-top:1px solid var(--border);background:var(--bg-primary)}.readonly-composer-note{color:var(--text-secondary);font-size:13px;text-align:center}.feedback-post{margin:8px 0;padding:10px 13px;max-width:78%;border:1px solid var(--border);border-radius:12px;background:var(--bg-primary)}.feedback-post.own{align-self:flex-end;background:var(--bg-message-own)}.feedback-post.reply{align-self:flex-start;border-left:3px solid var(--accent)}.feedback-post-from{margin-bottom:4px;color:var(--accent);font-size:12px;font-weight:600}.feedback-post-text{word-wrap:break-word;color:var(--text-primary);font-size:15px;line-height:1.45}.feedback-chip{display:inline-block;margin-top:7px;padding:2px 9px;border:1px solid var(--border);border-radius:999px;color:var(--text-secondary);font-size:12px}.feedback-chip.in_progress{border-color:var(--accent);color:var(--accent)}.feedback-chip.done{border-color:var(--success, #3a8a4d);color:var(--success, #3a8a4d)}.feedback-chip.declined{border-color:var(--danger);color:var(--danger)}.feedback-chip-why{color:var(--text-secondary)}.feedback-composer{display:flex;flex-wrap:wrap;gap:8px;align-items:flex-end;padding:12px 16px;border-top:1px solid var(--border);background:var(--bg-primary)}.feedback-input{flex:1;min-width:0;padding:9px 12px;border:1px solid var(--border);border-radius:10px;background:var(--bg-secondary);color:var(--text-primary);font-family:inherit;font-size:15px;line-height:1.4;resize:vertical}.feedback-input:focus{outline:none;border-color:var(--accent)}.feedback-send{padding:9px 16px;border:none;border-radius:10px;background:var(--accent);color:#fff;font-size:14px;cursor:pointer}.feedback-send:disabled{opacity:.5;cursor:default}.feedback-error{flex-basis:100%;color:var(--danger);font-size:13px}.unread-divider:before,.unread-divider:after{content:"";flex:1;height:1px;background:var(--danger);opacity:.5}.date-divider{align-self:center;margin:12px 0 6px;padding:3px 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14px;border:none;background:none;color:#e8eef4;font-size:14px;cursor:pointer}.sidebar-ctx-item:hover{background:var(--bg-hover)}.chat-main{flex:1;display:flex;flex-direction:column;background:var(--bg-chat)}.chat-header{display:flex;align-items:center;padding:12px 20px;border-bottom:1px solid var(--border);height:56px;background:var(--bg-primary)}.chat-header>.avatar-c{margin-right:10px}.chat-header-info h2{font-size:16px;font-weight:600}.chat-members{font-size:13px;color:var(--text-secondary)}.typing-indicator{font-size:13px;color:var(--accent);font-style:italic}.chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-secondary)}.chat-empty h2{margin-top:16px;font-weight:400;font-size:18px}.messages-scroll-wrap{flex:1;position:relative;display:flex;flex-direction:column;min-width:0;min-height:0}.messages-container{flex:1;overflow-y:auto;overflow-x:hidden;min-width:0;padding:20px;display:flex;flex-direction:column;gap:4px}.scroll-down-fab{position:absolute;right:18px;bottom:16px;width:44px;height:44px;border-radius:50%;border:none;background:var(--bg-input);color:var(--text-primary, #fff);box-shadow:0 2px 10px #00000073;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:5;transition:background .15s}.scroll-down-fab:hover{background:var(--bg-hover)}.scroll-down-badge{position:absolute;top:-4px;right:-4px;min-width:18px;height:18px;padding:0 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16px;cursor:pointer}.mention-item:hover{background:var(--bg-hover)}.mention-item-name{font-size:14px}.mention-item-login{font-size:12px;color:var(--text-muted)}.msg-photo{margin:2px 0 4px;border-radius:10px;overflow:hidden;background:#0003;display:flex;align-items:center;justify-content:center;cursor:pointer;max-width:100%}.msg-photo-img{width:100%;height:100%;object-fit:cover;display:block}.msg-photo-fallback{font-size:28px;opacity:.6}.msg-photo-spinner{width:22px;height:22px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}.msg-media-gone{margin:2px 0 4px;padding:10px 12px;border-radius:10px;border:1px dashed var(--border);background:#0000001f;display:flex;align-items:center;gap:10px;max-width:100%;cursor:default}.msg-media-gone-icon{font-size:18px;opacity:.7;flex:none}.msg-media-gone-text{display:flex;flex-direction:column;font-size:13px;line-height:1.3;opacity:.85}.msg-media-gone-hint{font-size:11px;color:var(--text-muted)}@keyframes spin{to{transform:rotate(360deg)}}.photo-viewer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:200;background:#000000eb}.photo-viewer-stage{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;overflow:hidden;touch-action:none;user-select:none;-webkit-user-select:none}.photo-viewer-img{max-width:100%;max-height:100%;object-fit:contain;border-radius:6px;transform-origin:center 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rgba(255,255,255,.06))}.chat-list{padding-bottom:76px}.new-chat-fab{position:absolute;right:16px;bottom:60px;width:52px;height:52px;border-radius:50%;border:none;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 14px #00000059;z-index:5}.new-chat-fab:hover{filter:brightness(1.08)}.new-chat-fab:active{transform:scale(.96)}.drawer-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;z-index:40}.drawer{position:fixed;top:0;left:0;bottom:0;width:min(300px,84vw);background:var(--bg-secondary);border-right:1px solid var(--border);z-index:41;display:flex;flex-direction:column;padding-bottom:8px;overflow-y:auto;animation:drawer-in .14s ease-out}@keyframes drawer-in{0%{transform:translate(-100%)}to{transform:translate(0)}}.drawer-head{padding:18px 16px 14px;border-bottom:1px solid 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.username{font-weight:600}.fbp-number{color:var(--text-muted);font-weight:600;margin-right:4px}.fbp-status{display:inline-block;margin-top:3px;font-size:11px;padding:1px 8px;border-radius:999px;border:1px solid var(--border);color:var(--text-muted)}.fbp-status.new{color:var(--accent);border-color:var(--accent)}.fbp-status.in_progress,.fbp-status.accepted{color:#e67e22;border-color:#e67e22}.fbp-status.done{color:#27ae60;border-color:#27ae60}.fbp-status.declined{color:var(--text-muted)}.fbp-empty{color:var(--text-muted);padding:18px 16px}.fbp-thread{display:flex;flex-direction:column;height:100%;min-height:0}.fbp-thread-head .chat-back-btn{display:flex}.fbp-resolution{margin:10px 16px 0;padding:8px 12px;border-left:3px solid var(--accent);background:var(--bg-secondary);border-radius:8px;color:var(--text-secondary);font-size:14px}.fbp-input,.fbp-textarea{flex:1;min-width:0;background:var(--bg-input);border:1px solid var(--border);border-radius:10px;color:var(--text-primary);padding:10px 12px;font-size:15px;font-family:inherit}.fbp-textarea{resize:vertical}.fbp-new{padding:20px 16px;max-width:620px;margin:0 auto;width:100%}.fbp-new-title{font-size:18px;font-weight:600;margin-bottom:12px}.fbp-new .fbp-input,.fbp-new .fbp-textarea{width:100%;margin-bottom:10px;display:block}.fbp-new-actions{display:flex;gap:8px;justify-content:flex-end}.fbp-note{margin-top:16px;padding-top:12px;border-top:1px solid var(--border);color:var(--text-muted);font-size:13px}@media(max-width:640px){.fbp-layout .chat-main,.fbp-layout.fbp-open .sidebar{display:none}.fbp-layout.fbp-open .chat-main{display:flex}}.msg-video.msg-video-file{width:min(320px,70vw);height:auto;border-radius:12px}.msg-video.msg-video-file .msg-video-el{width:100%;height:100%;object-fit:contain;background:#000}.tray{padding:8px 12px;border-top:1px solid 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b{font-size:15px}.tray-kind{position:absolute;left:3px;bottom:16px;padding:0 4px;border-radius:4px;background:#0009;color:#fff;font-size:10px}.tray-size{display:block;color:var(--text-muted);font-size:11px;text-align:center}.tray-remove{position:absolute;top:-6px;right:-6px;width:20px;height:20px;padding:0;border:none;border-radius:50%;background:var(--danger);color:#fff;font-size:12px;line-height:20px;cursor:pointer}.tray-more{min-width:44px;height:64px;display:flex;align-items:center;justify-content:center;border:1px dashed var(--border);border-radius:8px;color:var(--text-secondary)}.tray-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:6px}.tray-clear{border:none;background:none;color:var(--accent);cursor:pointer;font-size:13px}.avatar-crop-modal .modal-body{display:flex;flex-direction:column;align-items:center;gap:12px}.avatar-crop-view{position:relative;overflow:hidden;border-radius:8px;background:#000;touch-action:none;cursor:grab;max-width:100%}.avatar-crop-view:active{cursor:grabbing}.avatar-crop-view img{position:absolute;top:0;left:0;max-width:none;-webkit-user-select:none;user-select:none;-webkit-user-drag:none}.avatar-crop-mask{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;box-shadow:0 0 0 999px #00000073;pointer-events:none}.avatar-crop-zoom{width:100%;max-width:280px}.avatar-lightbox{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1200;background:#000000d9;display:flex;align-items:center;justify-content:center;cursor:zoom-out}.avatar-lightbox img{max-width:min(92vw,640px);max-height:86vh;border-radius:8px;box-shadow:0 8px 40px #0009}.profile-avatar-preview{cursor:zoom-in}