*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary:#f0f2f5;--bg-secondary:#ffffff;--bg-tertiary:#f8f9fa;--bg-hover:#e4e6eb;--bg-active:#e8f5e9;--text-primary:#1a1a2e;--text-secondary:#65676b;--text-tertiary:#8a8d91;--text-inverse:#ffffff;--accent:#4fae4e;--accent-hover:#3d8b3d;--accent-light:#e8f5e9;--accent-text:#ffffff;--msg-incoming:#ffffff;--msg-outgoing:#4fae4e;--msg-outgoing-text:#ffffff;--msg-incoming-text:#1a1a2e;--border:#e4e6eb;--border-light:#f0f2f5;--shadow-sm:0 1px 2px rgba(0,0,0,0.1);--shadow-md:0 4px 12px rgba(0,0,0,0.1);--shadow-lg:0 8px 24px rgba(0,0,0,0.15);--radius-sm:8px;--radius-md:12px;--radius-lg:18px;--radius-full:50%;--sidebar-width:340px;--header-height:64px;--input-height:64px}[data-theme="dark"]{--bg-primary:#0e1621;--bg-secondary:#17212b;--bg-tertiary:#1e2c3a;--bg-hover:#202b36;--bg-active:#2b5278;--text-primary:#f5f5f5;--text-secondary:#8b9bab;--text-tertiary:#6b7c8d;--text-inverse:#ffffff;--accent:#4fae4e;--accent-hover:#5fbf5f;--accent-light:#2d5a2d;--accent-text:#ffffff;--msg-incoming:#182533;--msg-outgoing:#2d5a2d;--msg-outgoing-text:#ffffff;--msg-incoming-text:#f5f5f5;--border:#1e2c3a;--border-light:#17212b;--shadow-sm:0 1px 2px rgba(0,0,0,0.3);--shadow-md:0 4px 12px rgba(0,0,0,0.3);--shadow-lg:0 8px 24px rgba(0,0,0,0.4)}html,body{height:100%;font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.5;overflow:hidden}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.hidden{display:none !important}.screen{display:none;width:100%;height:100%}.screen.active{display:flex}.auth-screen{align-items:center;justify-content:center;background:linear-gradient(135deg,var(--bg-primary) 0%,var(--bg-secondary) 100%)}.auth-card{background:var(--bg-secondary);border-radius:var(--radius-lg);padding:40px;width:100%;max-width:420px;box-shadow:var(--shadow-lg)}.auth-logo{text-align:center;margin-bottom:32px}.logo-icon{width:72px;height:72px;background:linear-gradient(135deg,var(--accent) 0%,#8b5cf6 100%);border-radius:var(--radius-md);display:inline-flex;align-items:center;justify-content:center;font-size:32px;font-weight:700;color:white;margin-bottom:16px}.auth-logo h1{font-size:28px;font-weight:700;color:var(--text-primary);margin-bottom:8px}.auth-subtitle{color:var(--text-secondary);font-size:14px}.auth-form{display:flex;flex-direction:column;gap:20px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{font-size:13px;font-weight:500;color:var(--text-secondary)}.form-group input{padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:15px;background:var(--bg-tertiary);color:var(--text-primary);transition:border-color 0.2s,box-shadow 0.2s}.form-group input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(91,95,199,0.15)}[data-theme="dark"] .form-group input:focus{box-shadow:0 0 0 3px rgba(124,58,237,0.25)}.form-group input::placeholder{color:var(--text-tertiary)}.password-input-wrapper{position:relative;display:flex;align-items:center}.password-input-wrapper input{width:100%;padding-right:44px}.toggle-password{position:absolute;right:8px;width:32px;height:32px;border:none;background:transparent;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:16px;color:var(--text-tertiary);transition:color 0.2s}.toggle-password:hover{color:var(--text-primary)}.captcha-group{align-items:center}.math-captcha{display:flex;align-items:center;gap:10px;padding:10px 16px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-sm)}.captcha-problem{font-size:18px;font-weight:600;color:var(--accent);min-width:60px;user-select:none}.captcha-input{width:50px !important;padding:6px 10px !important;text-align:center;font-size:16px;font-weight:600;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-secondary);color:var(--text-primary)}.captcha-input:focus{outline:none;border-color:var(--accent)}.auth-link{text-align:center;font-size:14px;color:var(--text-secondary)}.btn{padding:12px 24px;border:none;border-radius:var(--radius-sm);font-size:15px;font-weight:600;cursor:pointer;transition:all 0.2s;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:var(--accent);color:var(--accent-text)}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:var(--bg-hover);color:var(--text-primary)}.btn-secondary:hover{background:var(--border)}.btn-full{width:100%}.icon-btn{width:40px;height:40px;border:none;background:transparent;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);cursor:pointer;transition:all 0.2s}.icon-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.notification-badge{position:absolute;top:2px;right:2px;min-width:16px;height:16px;background:#dc2626;color:white;border-radius:8px;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;padding:0 4px}.hidden{display:none !important}.app-screen{flex-direction:row;height:100vh;overflow:hidden}.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;position:relative;flex-shrink:0}.sidebar-header{padding:16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}.user-info{display:flex;align-items:center;gap:12px}.user-name{font-weight:600;font-size:15px;color:var(--text-primary)}.sidebar-actions{display:flex;gap:4px}.sidebar-search{padding:12px 16px}.search-input-wrapper{position:relative;display:flex;align-items:center}.search-icon{position:absolute;left:12px;color:var(--text-tertiary);pointer-events:none}.search-input{width:100%;padding:10px 12px 10px 36px;border:1px solid var(--border);border-radius:var(--radius-lg);font-size:14px;background:var(--bg-tertiary);color:var(--text-primary);transition:border-color 0.2s}.search-input:focus{outline:none;border-color:var(--accent)}.search-input::placeholder{color:var(--text-tertiary)}.chat-list{flex:1;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--border) transparent}.chat-list::-webkit-scrollbar{width:6px}.chat-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.chat-item{display:flex;align-items:center;gap:12px;padding:12px 16px;cursor:pointer;transition:background 0.15s;border-left:3px solid transparent}.chat-item:hover{background:var(--bg-hover)}.chat-item.active{background:var(--bg-active);border-left-color:var(--accent)}.chat-item-content{flex:1;min-width:0}.chat-item-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}.chat-item-name{font-weight:600;font-size:15px;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-item-time{font-size:12px;color:var(--text-tertiary);flex-shrink:0;display:flex;align-items:center;gap:4px}.chat-pin-icon{display:inline-flex;align-items:center;vertical-align:middle;color:var(--text-tertiary);flex-shrink:0}.chat-mute-icon{display:inline-flex;align-items:center;vertical-align:middle;color:var(--text-tertiary);flex-shrink:0}.chat-item-meta{display:inline-flex;align-items:center;gap:3px;flex-shrink:0;vertical-align:middle;margin-left:4px}.chat-item-time{font-size:12px;color:var(--text-tertiary);flex-shrink:0;display:inline-flex;align-items:center;vertical-align:middle}.chat-item-bottom{display:flex;justify-content:space-between;align-items:center}.chat-item-preview{font-size:13px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;margin-right:8px}.chat-item-badge{min-width:22px;height:22px;background:#ff6b35;color:white;border-radius:11px;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;padding:0 6px;flex-shrink:0}.avatar{width:48px;height:48px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--accent) 0%,#8b5cf6 100%);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:18px;color:white;flex-shrink:0;position:relative;overflow:hidden}.avatar img{width:100%;height:100%;object-fit:cover}.avatar-sm{width:40px;height:40px;font-size:15px}.avatar-xs{width:32px;height:32px;font-size:13px}.online-dot{position:absolute;bottom:1px;right:1px;width:12px;height:12px;background:#22c55e;border:2px solid var(--bg-secondary);border-radius:var(--radius-full)}.fab{position:absolute;bottom:20px;right:20px;width:56px;height:56px;border:none;background:var(--accent);color:white;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-md);transition:all 0.2s;z-index:10}.fab:hover{background:var(--accent-hover);transform:scale(1.05)}.fab-admin{position:absolute;bottom:20px;right:86px;width:44px;height:44px;border:none;background:var(--bg-tertiary);color:var(--text-secondary);border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-md);transition:all 0.2s;z-index:10}.fab-admin:hover{background:var(--accent);color:white;transform:scale(1.05)}.chat-area{flex:1;display:flex;flex-direction:column;background:var(--bg-primary);min-width:0}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--text-tertiary)}.empty-icon{font-size:64px;margin-bottom:8px}.empty-state h2{font-size:20px;font-weight:600;color:var(--text-secondary)}.empty-state p{font-size:14px}.chat-view{flex:1;display:flex;flex-direction:column;height:100%}.chat-header{height:var(--header-height);padding:0 16px;display:flex;align-items:center;gap:12px;background:var(--bg-secondary);border-bottom:1px solid var(--border);flex-shrink:0}.mobile-back{display:none}.chat-header-info{display:flex;align-items:center;gap:12px;flex:1;min-width:0;cursor:pointer}.chat-header-text{min-width:0}.chat-header-info:hover{opacity:0.8}.chat-header-text h3{font-size:16px;font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.online-status{font-size:12px;color:#22c55e}.online-status.offline{color:var(--text-tertiary)}.profile-status.offline{color:var(--text-tertiary)}.chat-header-actions{display:flex;gap:4px}.chat-inline-search{display:flex;align-items:center;gap:8px;padding:8px 16px;background:var(--bg-secondary);border-bottom:1px solid var(--border)}.chat-inline-search-input{flex:1;border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 12px;font-size:14px;background:var(--bg-tertiary);color:var(--text-primary);outline:none}.chat-inline-search-input:focus{border-color:var(--accent)}.chat-inline-search-close{background:none;border:none;font-size:20px;color:var(--text-secondary);cursor:pointer;padding:0 4px;line-height:1}.chat-inline-search-close:hover{color:var(--text-primary)}.message.search-highlight{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--radius-sm)}.message.search-hidden{opacity:0.3}.messages-container{flex:1;overflow-y:auto;padding:16px;scrollbar-width:thin;scrollbar-color:var(--border) transparent}.messages-container::-webkit-scrollbar{width:6px}.messages-container::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.messages-list{display:flex;flex-direction:column;gap:4px;width:100%;padding:0 16px}.message{display:flex;gap:8px;max-width:85%;animation:messageIn 0.2s ease-out}@keyframes messageIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.incoming{align-self:flex-start}.message.outgoing{align-self:flex-end;flex-direction:row-reverse}.message-bubble{padding:10px 14px;border-radius:var(--radius-lg);position:relative;word-wrap:break-word;min-width:80px}.message.incoming .message-bubble{background:var(--msg-incoming);color:var(--msg-incoming-text);border-bottom-left-radius:4px;box-shadow:var(--shadow-sm)}.message.outgoing .message-bubble{background:var(--msg-outgoing);color:var(--msg-outgoing-text);border-bottom-right-radius:4px}.message-text{font-size:15px;line-height:1.4}.chat-link{color:#4fae4e;text-decoration:underline;text-underline-offset:2px;word-break:break-all}.chat-link:hover{color:#a599ff}[data-theme="light"] .chat-link{color:#3d8b3d}[data-theme="light"] .chat-link:hover{color:#4fae4e}.message-meta{display:flex;align-items:center;gap:6px;margin-top:4px;justify-content:flex-end}.message-time{font-size:11px;opacity:0.7}.message-check{font-size:12px;opacity:0.7}.msg-check.sent{color:rgba(255,255,255,0.5)}.msg-check.read{color:#53bdeb}.message-reply{background:rgba(0,0,0,0.04);border-left:3px solid var(--accent);padding:8px 12px;margin-bottom:8px;border-radius:6px;font-size:13px;cursor:pointer}.outgoing .message-reply{background:rgba(255,255,255,0.35);border-left-color:rgba(255,255,255,0.6)}.incoming .message-reply{background:rgba(0,0,0,0.05);border-left-color:var(--accent)}[data-theme="dark"] .message-reply{background:rgba(255,255,255,0.06)}[data-theme="dark"] .outgoing .message-reply{background:rgba(255,255,255,0.08);border-left-color:rgba(255,255,255,0.3)}[data-theme="dark"] .incoming .message-reply{background:rgba(255,255,255,0.06);border-left-color:#6ab2f2}.message-reply-name{font-weight:700;font-size:12px;color:var(--accent);margin-bottom:4px;letter-spacing:0.02em}.outgoing .message-reply-name{color:rgba(255,255,255,0.9)}[data-theme="dark"] .outgoing .message-reply-name{color:#6ab2f2}[data-theme="dark"] .incoming .message-reply-name{color:#6ab2f2}.message-reply-text{color:var(--text-primary);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:250px;opacity:1;display:flex;align-items:center;gap:8px}.outgoing .message-reply-text{color:rgba(255,255,255,0.85)}[data-theme="dark"] .outgoing .message-reply-text{color:rgba(255,255,255,0.75)}[data-theme="dark"] .incoming .message-reply-text{color:#d0d0d0}.reply-thumb{width:40px;height:40px;border-radius:6px;object-fit:cover;flex-shrink:0}.outgoing .reply-thumb{border:1px solid rgba(255,255,255,0.25)}.incoming .reply-thumb{border:1px solid rgba(0,0,0,0.1)}[data-theme="dark"] .reply-thumb{border:1px solid rgba(255,255,255,0.15)}.reply-media-label{color:var(--accent);font-weight:600;font-size:13px}.outgoing .reply-media-label{color:rgba(255,255,255,0.9)}[data-theme="dark"] .outgoing .reply-media-label{color:#6ab2f2}[data-theme="dark"] .incoming .reply-media-label{color:#6ab2f2}.message-edited{font-size:10px;opacity:0.6;font-style:italic}.call-message{display:flex;align-items:center;gap:8px;padding:6px 0;justify-content:center}.voice-msg{display:flex;align-items:center;gap:10px;min-width:220px;padding:4px 0}.voice-play-btn{width:40px;height:40px;border:none;background:var(--accent);border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;color:white;font-size:14px;transition:transform 0.15s,background 0.2s}.voice-play-btn:hover{transform:scale(1.08)}.voice-play-btn svg{width:18px;height:18px;fill:white}.voice-waveform{flex:1;height:32px;display:flex;align-items:center;gap:2px;overflow:hidden}.voice-waveform span{width:3px;min-height:4px;border-radius:1.5px;background:var(--text-tertiary);opacity:0.4;transition:background 0.1s,opacity 0.1s}.voice-waveform span.off{background:var(--text-tertiary);opacity:0.3}.voice-waveform span.on{background:var(--accent);opacity:0.9}.voice-duration{font-size:12px;opacity:0.6;flex-shrink:0;min-width:30px}.voice-dot{font-size:6px;opacity:0.4;color:var(--accent)}.recording-indicator{flex:1;display:flex;align-items:center;gap:10px;padding:10px 16px}.rec-dot{width:12px;height:12px;background:#ef4444;border-radius:var(--radius-full);animation:recPulse 1s ease-in-out infinite}@keyframes recPulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:0.5;transform:scale(0.8)}}.rec-timer{font-size:16px;font-weight:500;color:var(--text-primary);font-variant-numeric:tabular-nums}.rec-cancel-btn{width:40px;height:40px;border:none;background:transparent;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-secondary);font-size:18px;transition:background 0.2s}.rec-cancel-btn:hover{background:var(--bg-hover);color:#ef4444}.rec-send-btn{background:#22c55e !important}.rec-send-btn:hover{background:#16a34a !important}.file-message{display:flex;align-items:center;gap:12px;padding:8px 0;min-width:200px}.file-icon{width:44px;height:44px;background:rgba(255,255,255,0.2);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;flex-shrink:0}.message.incoming .file-icon{background:var(--accent-light);color:var(--accent)}.file-info{flex:1;min-width:0}.file-name{font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-size{font-size:12px;opacity:0.7}.file-download{width:32px;height:32px;border:none;background:rgba(255,255,255,0.2);border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;cursor:pointer;color:inherit;flex-shrink:0}.file-arrow{color:#888;font-size:20px;flex-shrink:0;display:flex;align-items:center}.file-icon-app{width:40px;height:48px;flex-shrink:0;filter:drop-shadow(0 2px 6px rgba(0,0,0,0.25))}.file-icon-app svg{width:40px;height:48px}.image-message{max-width:300px;border-radius:var(--radius-md);overflow:hidden;cursor:pointer;transition:opacity 0.2s}.image-message:hover{opacity:0.9}.image-message img{width:100%;display:block;border-radius:var(--radius-md)}.link-preview-card{display:flex;border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:var(--radius-sm);margin-top:8px;overflow:hidden;cursor:pointer;max-width:360px;transition:opacity 0.2s}.link-preview-card:hover{opacity:0.85}.link-preview-image{width:100px;min-height:80px;max-height:120px;object-fit:cover;flex-shrink:0}.link-preview-info{padding:8px 10px;min-width:0;flex:1}.link-preview-title{font-size:13px;font-weight:600;color:var(--text);line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.link-preview-description{font-size:12px;color:var(--text-secondary);line-height:1.3;margin-top:3px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.link-preview-site{font-size:11px;color:var(--text-secondary);opacity:0.7;margin-top:4px}.video-message{max-width:320px;border-radius:var(--radius-md);overflow:hidden;cursor:pointer;position:relative;display:inline-block;background:#000}.video-message video{display:block;width:100%;object-fit:cover}.video-play-overlay{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(0,0,0,0.55);border-radius:50%;display:flex;align-items:center;justify-content:center;color:white;font-size:22px;pointer-events:none;transition:background 0.2s}.video-message:hover .video-play-overlay{background:rgba(0,0,0,0.75)}.music-message{display:flex;align-items:center;gap:12px;min-width:220px;padding:4px 0}.music-play-btn{width:44px;height:44px;min-width:44px;border-radius:50%;background:var(--accent);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background 0.2s,transform 0.1s}.music-play-btn:hover{background:var(--accent-hover);transform:scale(1.05)}.music-play-btn svg{width:20px;height:20px}.music-info{min-width:0;flex:1}.music-title{font-size:14px;font-weight:500;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.music-duration{font-size:12px;color:var(--text-secondary);margin-top:2px}.date-separator{text-align:center;padding:16px 0}.date-separator span{background:var(--bg-tertiary);color:var(--text-secondary);font-size:12px;font-weight:500;padding:6px 12px;border-radius:var(--radius-lg)}.pinned-bar{padding:8px 16px;background:var(--accent-light);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px;font-size:13px;cursor:pointer}.pinned-bar-icon{color:var(--accent)}.pinned-bar-text{flex:1;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.typing-indicator{padding:8px 16px;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-tertiary)}.typing-dots{display:flex;gap:3px}.typing-dots span{width:6px;height:6px;background:var(--text-tertiary);border-radius:var(--radius-full);animation:typingBounce 1.4s infinite ease-in-out}.typing-dots span:nth-child(2){animation-delay:0.2s}.typing-dots span:nth-child(3){animation-delay:0.4s}@keyframes typingBounce{0%,80%,100%{transform:translateY(0)}40%{transform:translateY(-4px)}}.reply-preview{padding:10px 16px;background:var(--bg-secondary);border-top:1px solid var(--border);display:flex;align-items:center;gap:12px;border-left:3px solid var(--accent);margin:0 16px;border-radius:var(--radius-sm)}.reply-content{flex:1;min-width:0}.reply-name{font-size:13px;font-weight:600;color:var(--accent);display:block}.reply-text{font-size:13px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.reply-close{width:24px;height:24px;border:none;background:transparent;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-tertiary);flex-shrink:0}.reply-close:hover{background:var(--bg-hover)}.chat-input-area{padding:12px 16px;background:var(--bg-secondary);border-top:1px solid var(--border);display:flex;align-items:center;gap:8px;flex-shrink:0;position:relative}.message-input-wrapper{flex:1}.message-input{width:100%;padding:10px 16px;border:1px solid var(--border);border-radius:var(--radius-lg);font-size:15px;background:var(--bg-tertiary);color:var(--text-primary);transition:border-color 0.2s}.message-input:focus{outline:none;border-color:var(--accent)}.message-input::placeholder{color:var(--text-tertiary)}.attach-btn,.emoji-btn,.voice-btn{color:var(--text-secondary)}.send-btn{width:44px;height:44px;border:none;background:var(--accent);color:white;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all 0.2s;flex-shrink:0}.send-btn:hover{background:var(--accent-hover);transform:scale(1.05)}.emoji-picker{position:absolute;bottom:80px;right:16px;width:320px;max-height:400px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;z-index:100}.emoji-picker.hidden{display:none}.emoji-picker-header{padding:12px;border-bottom:1px solid var(--border)}.emoji-search-input{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:14px;background:var(--bg-tertiary);color:var(--text-primary)}.emoji-search-input:focus{outline:none;border-color:var(--accent)}.emoji-picker-grid{flex:1;overflow-y:auto;padding:8px;display:grid;grid-template-columns:repeat(7,1fr);gap:4px;scrollbar-width:thin;scrollbar-color:var(--border) transparent}.emoji-item{width:100%;aspect-ratio:1;border:none;background:transparent;border-radius:var(--radius-sm);cursor:pointer;padding:4px;display:flex;align-items:center;justify-content:center;transition:background 0.15s}.emoji-item:hover{background:var(--bg-hover)}.emoji-item img{width:100%;height:100%;object-fit:contain}.sticker-container{width:100%;height:100%;display:flex;align-items:center;justify-content:center}.emoji-sticker{padding:4px}.sticker-chat{width:120px;height:120px}.modal{position:fixed;top:0;left:0;right:0;bottom:0;z-index:200;display:flex;align-items:center;justify-content:center}@media (max-width:768px){.call-modal-video{align-items:stretch;justify-content:stretch}.call-modal-video .modal-overlay{background:#000}.call-modal-video .call-content{max-width:640px !important;width:100% !important;min-height:480px !important;border-radius:var(--radius-lg) !important;padding:0 !important;background:#000 !important;display:flex;flex-direction:column;align-items:center;justify-content:flex-end}.call-modal-video .call-content .call-remote-video{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:contain;background:#000;z-index:0}.call-modal-video .call-content .call-info{position:absolute;bottom:100px;left:50%;transform:translateX(-50%);z-index:5;background:rgba(0,0,0,0.5);padding:12px 28px;border-radius:20px;white-space:nowrap}.call-modal-video .call-content .call-avatar{display:none}.call-modal-video .call-content .call-info h3{font-size:18px;margin-bottom:2px}.call-modal-video .call-content .call-info p{font-size:13px}.call-modal-video 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20px;overflow-y:auto;flex:1}.user-list{display:flex;flex-direction:column;gap:8px;margin-top:16px}.user-item{display:flex;align-items:center;gap:12px;padding:12px;border-radius:var(--radius-sm);cursor:pointer;transition:background 0.15s}.user-item:hover{background:var(--bg-hover)}.user-item-name{font-weight:500;font-size:15px}.user-item-email{font-size:13px;color:var(--text-secondary)}.call-content{position:relative;background:linear-gradient(135deg,var(--accent) 0%,#8b5fc7 100%);border-radius:var(--radius-lg);padding:40px;text-align:center;color:white;width:100%;max-width:360px;min-height:480px;display:flex;flex-direction:column;align-items:center;justify-content:center;box-sizing:border-box}.call-content.call-video-mode{max-width:640px;border-radius:var(--radius-lg);padding:0;height:auto;aspect-ratio:4/3;overflow:hidden}.call-content.call-video-mode #call-remote-video{width:100%;height:100%;object-fit:contain;background:#000;border-radius:var(--radius-lg)}.call-content.call-video-mode .call-info{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);z-index:5;background:rgba(0,0,0,0.5);padding:8px 20px;border-radius:20px;white-space:nowrap}.call-content.call-video-mode .call-avatar{display:none}.call-content.call-video-mode .call-info h3{font-size:16px;margin-bottom:2px}.call-content.call-video-mode .call-info p{font-size:12px}.call-avatar{width:96px;height:96px;border-radius:var(--radius-full);background:rgba(255,255,255,0.2);margin:0 auto 20px;display:flex;align-items:center;justify-content:center;font-size:36px;font-weight:600}.call-content h3{font-size:20px;margin-bottom:8px}.call-content p{font-size:14px;opacity:0.8}#call-timer{font-size:24px;font-weight:600;margin:16px 0}.call-actions{display:flex;justify-content:center;gap:20px;margin-top:24px}.call-modal-video .call-actions{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:9999;background:rgba(0,0,0,0.5);padding:14px 24px;border-radius:40px;margin:0;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.call-btn{width:56px;height:56px;border:none;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;cursor:pointer;color:white;transition:transform 0.2s}.call-btn:hover{transform:scale(1.1)}.call-accept{background:#22c55e}.call-decline{background:#ef4444}.call-mute{background:rgba(255,255,255,0.2);width:44px;height:44px}.call-mute.muted{background:#dc2626}.chat-context-menu{position:fixed;z-index:300;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:6px;min-width:220px;animation:menuFadeIn 0.12s ease-out}.ctx-item{display:flex;align-items:center;gap:12px;width:100%;padding:10px 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var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:6px;min-width:180px;animation:menuFadeIn 0.12s ease-out}@keyframes menuFadeIn{from{opacity:0;transform:scale(0.95)}to{opacity:1;transform:scale(1)}}.msg-menu-item{display:flex;align-items:center;gap:10px;width:100%;padding:10px 14px;border:none;background:transparent;border-radius:var(--radius-sm);font-size:14px;color:var(--text-primary);cursor:pointer;transition:background 0.12s;text-align:left}.msg-menu-item:hover{background:var(--bg-hover)}.msg-menu-item svg{color:var(--text-secondary);flex-shrink:0}.msg-menu-danger{color:#ef4444}.msg-menu-danger svg{color:#ef4444}.msg-menu-danger:hover{background:#fef2f2}[data-theme="dark"] .msg-menu-danger:hover{background:rgba(239,68,68,0.15)}.profile-panel{position:relative;background:var(--bg-secondary);border-radius:var(--radius-lg);width:100%;max-width:360px;max-height:85vh;display:flex;flex-direction:column;box-shadow:var(--shadow-lg);overflow-y:auto}.profile-header{display:flex;justify-content:flex-end;padding:12px 16px 0}.profile-avatar{width:100px;height:100px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--accent) 0%,#8b5cf6 100%);display:flex;align-items:center;justify-content:center;font-size:40px;font-weight:600;color:white;margin:0 auto 16px;flex-shrink:0;position:relative;overflow:hidden}.profile-avatar img{width:100%;height:100%;object-fit:cover}.profile-name{font-size:20px;font-weight:600;color:var(--text-primary);text-align:center;margin-bottom:4px}.profile-status{font-size:14px;color:var(--text-secondary);text-align:center;margin-bottom:4px}.profile-username{font-size:13px;color:var(--text-tertiary);text-align:center;margin-bottom:16px}.profile-actions{display:flex;justify-content:center;gap:24px;padding:0 20px 20px;border-bottom:1px solid var(--border)}.profile-action-btn{display:flex;flex-direction:column;align-items:center;gap:6px;color:var(--text-secondary);font-size:12px;cursor:pointer;transition:color 0.2s}.profile-action-btn:hover{color:var(--accent)}.profile-actions-row{display:flex;justify-content:center;gap:24px;padding:16px 20px}.profile-details{padding:8px 20px}.profile-detail-item{display:flex;align-items:center;gap:14px;padding:12px 0}.profile-detail-item svg{color:var(--text-secondary);flex-shrink:0}.profile-detail-value{font-size:13px;font-weight:700;display:block;line-height:1.4}.birthday-row{display:flex;align-items:center;gap:6px}.zodiac-icon{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;color:var(--accent);opacity:0.7;transition:opacity 0.2s;cursor:default;position:relative}.zodiac-icon:hover{opacity:1}.zodiac-icon svg{width:18px;height:18px}.zodiac-icon .zodiac-tip{display:none;position:absolute;bottom:calc(100% + 6px);left:50%;transform:translateX(-50%);background:var(--bg-secondary);border:1px solid var(--border);border-radius:6px;padding:4px 8px;font-size:12px;font-weight:500;color:var(--text-primary);white-space:nowrap;box-shadow:var(--shadow-sm);pointer-events:none;z-index:10}.zodiac-icon:hover .zodiac-tip{display:block}.profile-detail-label{font-size:13px;color:var(--text-secondary)}.profile-divider{height:1px;background:var(--border);margin:4px 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20px}.profile-info-item{display:flex;align-items:center;gap:16px;padding:14px 0;border-bottom:1px solid var(--border-light)}.profile-info-item:last-child{border-bottom:none}.profile-info-item svg{color:var(--text-secondary);flex-shrink:0}.profile-media-count{font-size:14px;color:var(--text-secondary)}.attach-wrapper{position:relative}.attach-btn{position:relative}.attach-menu{position:absolute;bottom:100%;left:50%;transform:translateX(-50%);margin-bottom:8px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:6px;min-width:200px;z-index:100}.attach-menu.hidden{display:none}.attach-menu-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:var(--radius-sm);cursor:pointer;transition:background 0.15s;font-size:14px;color:var(--text-primary)}.attach-menu-item:hover{background:var(--bg-hover)}.attach-menu-item svg{color:var(--accent);flex-shrink:0}.confirm-info{text-align:center;padding:20px 0}.confirm-info p{color:var(--text-secondary);margin-bottom:20px;line-height:1.6}@media (max-width:768px){.app-screen{position:relative;height:-webkit-fill-available;height:100dvh}.sidebar{position:absolute;top:0;left:0;width:100%;height:100%;z-index:10;transition:transform 0.25s ease}.sidebar.hidden-mobile{transform:translateX(-100%);pointer-events:none}.chat-area{width:100%;position:absolute;top:0;left:0;height:100%;z-index:5;transition:transform 0.25s ease;overflow:hidden}.chat-area.hidden-mobile{transform:translateX(100%);pointer-events:none}.chat-view{height:100%;overflow:hidden}.mobile-back{display:flex !important}.sidebar-actions{gap:2px}.icon-btn{width:36px;height:36px}.message{max-width:90%}.messages-list{padding:0 8px}.chat-input-area{padding:8px 10px;gap:6px;flex-shrink:0;min-height:52px}.message-input{padding:10px 12px;font-size:16px}.emoji-picker{width:calc(100% - 20px);right:10px;left:10px;bottom:70px;max-height:50vh}.emoji-picker-grid{grid-template-columns:repeat(8,1fr)}.chat-item{padding:10px 12px}.chat-header{padding:0 10px;gap:8px}.chat-header-actions{gap:2px}.attach-menu{left:0;transform:none;bottom:calc(100% + 4px)}.reply-preview{margin:0 10px;padding:8px 12px}.fab{bottom:20px;right:20px;width:56px;height:56px;z-index:20}.fab-admin{bottom:20px;right:86px;width:44px;height:44px;z-index:20}.auth-card{padding:24px 20px;margin:12px;max-width:none}.auth-logo h1{font-size:24px}.logo-icon{width:60px;height:60px;font-size:26px}.modal-content{max-width:none;max-height:100vh;border-radius:0;height:100%}.modal{align-items:stretch}.modal-content .modal-body{padding:12px 16px}.profile-panel,.settings-panel,.friends-panel,.notifications-panel{max-width:none;max-height:100vh;border-radius:0;height:100%}#call-modal{align-items:stretch}.call-avatar{width:100px;height:100px;font-size:36px}.chat-context-menu,.msg-context-menu{min-width:200px;max-width:calc(100vw - 32px)}.user-name{font-size:14px;max-width:80px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-header{padding:12px}.sidebar-search{padding:8px 12px}}@media (max-width:380px){.auth-card{padding:20px 16px}.chat-item-name{font-size:14px}.chat-item-preview{font-size:12px}.emoji-picker-grid{grid-template-columns:repeat(7,1fr)}.chat-input-area{padding:6px 8px}.sidebar-actions{flex-wrap:wrap}}@supports (padding-top:env(safe-area-inset-top)){.sidebar-header{padding-top:calc(12px + env(safe-area-inset-top))}.chat-header{padding-top:env(safe-area-inset-top);height:calc(var(--header-height) + env(safe-area-inset-top))}.chat-input-area{padding-bottom:calc(12px + env(safe-area-inset-bottom))}}@media (min-width:769px) and (max-width:1024px){:root{--sidebar-width:300px}}::-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-tertiary)}.settings-panel{position:relative;background:var(--bg-secondary);border-radius:var(--radius-lg);width:100%;max-width:420px;max-height:85vh;display:flex;flex-direction:column;box-shadow:var(--shadow-lg);overflow:hidden}.settings-header{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--border)}.settings-header h3{font-size:18px;font-weight:600;flex:1}.settings-body{padding:0;overflow-y:auto;flex:1}.settings-menu-item{display:flex;align-items:center;gap:14px;padding:16px 20px;cursor:pointer;transition:background 0.15s;border-bottom:1px solid var(--border-light)}.settings-menu-item:hover{background:var(--bg-hover)}.settings-menu-item span{flex:1;font-size:15px}.settings-menu-item svg:last-child{color:var(--text-tertiary)}.settings-page{padding:20px}.settings-page.hidden{display:none}.settings-page .settings-section{text-align:left}.settings-page .btn-primary{display:block;margin:16px auto 0;width:fit-content}.settings-page .settings-radio-group{text-align:left}.settings-back{display:inline-flex;align-items:center;gap:4px;background:none;border:none;color:var(--accent);font-size:14px;cursor:pointer;padding:0;margin-bottom:20px;text-align:left}.settings-back:hover{text-decoration:underline}.settings-hint{font-size:14px;color:var(--text-secondary);margin-bottom:12px}.settings-hint.enabled{color:#22c55e;font-weight:500}.settings-hint.disabled{color:var(--text-tertiary)}.settings-radio-group{display:flex;flex-direction:column;gap:12px}.settings-radio{display:flex;align-items:center;gap:10px;font-size:15px;cursor:pointer}.settings-radio 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input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;inset:0;background:var(--border);border-radius:12px;transition:0.3s}.toggle-slider::before{content:'';position:absolute;width:18px;height:18px;left:3px;bottom:3px;background:white;border-radius:50%;transition:0.3s}.toggle-switch input:checked + .toggle-slider{background:var(--accent)}.toggle-switch input:checked + .toggle-slider::before{transform:translateX(20px)}.settings-avatar-row{display:flex;align-items:center;gap:16px;margin-bottom:20px}.btn-sm{padding:8px 16px;font-size:13px}.friends-panel{position:relative;background:var(--bg-secondary);border-radius:var(--radius-lg);width:100%;max-width:420px;max-height:85vh;display:flex;flex-direction:column;box-shadow:var(--shadow-lg);overflow:hidden}.friends-header{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--border)}.friends-header h3{font-size:18px;font-weight:600;flex:1}.friends-tabs{display:flex;border-bottom:1px solid 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!important;background:rgba(0,0,0,0.5) !important;padding:12px 28px !important;border-radius:20px !important;white-space:nowrap !important}.call-content:not(.call-video-mode) .call-actions{position:fixed !important;bottom:24px !important;left:0 !important;right:0 !important;transform:none !important;border-radius:0 !important;padding:16px 20px !important;justify-content:center !important;gap:20px !important}}.call-modal-video .call-content .call-remote-video{object-fit:cover !important}.call-modal-video .call-content .call-info{bottom:90px}.call-modal-video .call-actions{bottom:0;left:0;right:0;transform:none;border-radius:0;padding:16px 20px;justify-content:center;gap:20px}.call-local-video{width:90px;height:120px;top:12px;right:12px}.call-btn{width:56px;height:56px}}