*{margin:0;padding:0;box-sizing:border-box;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}:root{--primary: #4361ee;--primary-dark: #3a56d4;--secondary: #7209b7;--success: #4cc9f0;--light: #f8f9fa;--dark: #212529;--gray: #6c757d;--light-gray: #e9ecef;--sidebar: #f8f9fa;--border: #dee2e6;--online: #4ade80;--away: #facc15;--offline: #94a3b8;--reply: #a8450a;--background: linear-gradient(180deg, #667eea 0%, #764ba2 100%);--avatar: linear-gradient(45deg, var(--primary), var(--secondary));--chat-text: var(--dark);--chat-send-text: var(--light);--chat-sys-message: #f0f0f0;--chat: var(--light);--chat-bubble: var(--primary);--chat-recv-bubble: white;--chat-sys-message: var(--light)}[data-theme=dark]{--primary: #6366f1;--primary-dark: #4f46e5;--secondary: #a855f7;--success: #22d3ee;--light: #1f2937;--dark: #f3f4f6;--gray: #9ca3af;--light-gray: #323c4d;--border: #4b5563;--online: #34d399;--away: #fbbf24;--offline: #6b7280;--reply: #fb923c;--sidebar: #1f2937;--chat: #1f2937;--chat-bubble: 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p{color:var(--gray)}.group-settings-panel{position:absolute;top:60px;right:10px;width:320px;background:var(--light);border:1px solid var(--border);border-radius:12px;box-shadow:0 4px 20px #00000026;z-index:100;overflow:hidden;animation:slideDown .2s ease}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.group-settings-header{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;background:linear-gradient(45deg,var(--primary),var(--secondary));color:#fff}.group-settings-header h3{font-size:16px;font-weight:600}.group-settings-header .close-btn{width:28px;height:28px;border-radius:50%;border:none;background:#fff3;color:#fff;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.group-settings-header 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button.primary:hover{background:var(--primary-dark)}.announcement-display{background:var(--light);border-radius:8px;padding:12px;word-wrap:break-word}.announcement-display p{font-size:14px;color:var(--dark);line-height:1.5;margin-bottom:10px}.edit-btn{padding:5px 10px;border-radius:6px;border:1px solid var(--primary);background:transparent;color:var(--primary);font-size:12px;cursor:pointer;transition:all .2s}.edit-btn:hover{background:var(--primary);color:#fff}.member-item:hover{background:#f8f9fa}.member-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(45deg,var(--primary),var(--secondary));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;margin-right:12px}.member-name{flex:1;font-size:14px;color:var(--light);font-weight:500}.member-status{font-size:12px}.member-status .online{color:#16a34a;font-weight:500}.member-status .offline{color:#94a3b8}.no-members{text-align:center;padding:20px;color:var(--gray);font-size:14px}.member-count{font-size:13px;color:var(--gray);font-weight:400}.message-input-wrapper{border-top:1px solid var(--border);background:var(--chat);flex-shrink:0}.reply-indicator{display:flex;align-items:center;justify-content:space-between;padding:8px 15px;background:#f0f4f8;border-bottom:1px solid var(--border)}.reply-info{flex:1;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.reply-label{color:var(--primary);font-weight:500}.reply-name{color:var(--dark);font-weight:600}.reply-content{color:var(--gray)}.cancel-reply{width:24px;height:24px;border-radius:50%;border:none;background:#e9ecef;cursor:pointer;display:flex;align-items:center;justify-content:center}.cancel-reply:hover{background:#dee2e6}.mention-list{position:absolute;bottom:60px;left:10px;background:#fff;border:1px solid var(--border);border-radius:8px;box-shadow:0 2px 10px #0000001a;max-height:200px;overflow-y:auto;z-index:100}.mention-item{padding:10px 15px;cursor:pointer;border-bottom:1px solid var(--gray)}.mention-item:last-child{border-bottom:none}.mention-item:hover{background:var(--light-gray)}.cancel-reply:hover{background:#e9ecef;color:var(--dark)}.attachment-preview{display:flex;flex-wrap:wrap;gap:10px;padding:10px 15px;background:#f8f9fa;border-bottom:1px solid var(--border)}.attachment-item{position:relative;border-radius:8px;overflow:hidden}.attachment-image-preview{width:80px;height:80px;-o-object-fit:cover;object-fit:cover;border-radius:8px;border:1px solid var(--border)}.attachment-file-preview{display:flex;align-items:center;gap:8px;padding:8px 12px;background:#fff;border:1px solid var(--border);border-radius:8px;min-width:150px}.attachment-file-preview .file-icon{font-size:24px}.attachment-file-preview .file-info{display:flex;flex-direction:column}.attachment-file-preview .file-name{font-size:13px;color:var(--dark);max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attachment-file-preview .file-size{font-size:11px;color:var(--gray)}.remove-attachment{position:absolute;top:-5px;right:-5px;width:20px;height:20px;border-radius:50%;background:#ef4444;color:#fff;border:none;cursor:pointer;font-size:14px;display:flex;align-items:center;justify-content:center}.input-action-wrapper{position:relative}.emoji-picker{position:absolute;bottom:100%;left:0;width:300px;max-height:250px;background:#fff;border-radius:12px;box-shadow:0 4px 20px #00000026;padding:10px;margin-bottom:10px;z-index:1000;overflow-y:auto}.emoji-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:4px}.emoji-btn{width:32px;height:32px;border:none;background:transparent;cursor:pointer;font-size:20px;border-radius:6px;transition:all .2s}.emoji-btn:hover{background:#e9ecef;transform:scale(1.2)}.message-bubble{position:relative;padding:10px;border-top-left-radius:10px;border-top-right-radius:10px}.message-row.received .message-bubble{background-color:var(--chat-recv-bubble);border-bottom-right-radius:10px}.message-row.sent .message-bubble{border-bottom-left-radius:10px;background-color:var(--chat-bubble);color:#fff}.message-hover-menu{position:absolute;top:-28px;display:flex;gap:4px;background:#fff;border-radius:6px;box-shadow:0 2px 8px #00000026;padding:4px;z-index:100;animation:fadeIn .2s ease}.message.received .message-hover-menu{left:0}.message.sent .message-hover-menu{right:0}.message-hover-menu button{width:28px;height:28px;border:none;background:transparent;cursor:pointer;border-radius:6px;font-size:14px;display:flex;align-items:center;justify-content:center;transition:all .2s}.message-hover-menu button:hover{background:#e9ecef}.message-attachments{margin-bottom:8px}.message-attachment{margin-bottom:4px}.message-image-wrapper{position:relative;display:inline-block}.message-image-wrapper .message-image{max-width:200px;max-height:150px;border-radius:8px;cursor:pointer;transition:all .2s}.message-image-wrapper .message-image:hover{opacity:.9;transform:scale(1.02)}.message-image-wrapper .upload-progress-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:#0009;display:flex;align-items:center;justify-content:center;border-radius:8px}.message-image-wrapper .upload-progress-text{color:#fff;font-size:16px;font-weight:700}.message-image{max-width:200px;max-height:150px;border-radius:8px;cursor:pointer;transition:all .2s}.message-image:hover{opacity:.9;transform:scale(1.02)}.message-file.uploading{pointer-events:none;opacity:.7}.message-file .file-upload-progress{display:flex;align-items:center;gap:8px;margin-top:4px}.message-file .file-progress-bar{flex:1;height:4px;background:#e0e0e0;border-radius:2px;overflow:hidden}.message-file .file-progress-fill{height:100%;background:#4caf50;transition:width .2s}.message-file .file-progress-text{font-size:11px;color:var(--gray);min-width:40px}.message-file{display:flex;align-items:center;gap:10px;padding:10px 14px;background:#fff;border:1px solid var(--border);border-radius:8px;cursor:pointer;transition:all .2s;min-width:180px}.message-file:hover{background:#f8f9fa;border-color:var(--primary)}.message-file .file-icon{font-size:28px}.message-file .file-details{display:flex;flex-direction:column}.message-file .file-name{font-size:13px;color:var(--dark);max-width:140px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-file .file-size{font-size:11px;color:var(--gray)}.image-preview-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000e6;z-index:9999;display:flex;flex-direction:column;align-items:center;justify-content:center;animation:fadeIn .2s ease}.image-preview-header{position:absolute;top:20px;right:20px;display:flex;gap:10px;z-index:10000}.preview-close{width:40px;height:40px;border-radius:50%;background:#fff3;color:#fff;border:none;font-size:24px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.preview-close:hover{background:#ffffff4d}.preview-save{padding:10px 20px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:14px;cursor:pointer;transition:all .2s}.preview-save:hover{background:var(--primary-dark)}.preview-burn{padding:10px 20px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:14px;cursor:pointer;transition:all .2s}.preview-burn:hover{background:var(--primary-dark)}.image-preview-img{max-width:90%;max-height:85%;-o-object-fit:contain;object-fit:contain;border-radius:8px;cursor:grab;transition:transform .1s ease}.image-preview-img:active{cursor:grabbing}.image-preview-container{display:flex;align-items:center;justify-content:center;width:100%;height:100%;overflow:hidden}.image-preview-hint{position:absolute;bottom:30px;left:50%;transform:translate(-50%);color:#fff9;font-size:13px;pointer-events:none}.message-reply{padding:6px 10px;background:var(--light);border-left:3px solid var(--primary);border-radius:6px;margin-bottom:8px;font-size:13px;cursor:pointer}.message-reply .reply-header{color:var(--reply);line-height:1.4;overflow-x:clip}.message.received .message-reply{background:#00000008}.message.sent .message-reply{background:#ffffff26}.message-reply .reply-name{font-weight:600;color:var(--primary)}.message.sent .message-reply .reply-name{color:#ffffffe6}.message-reply .reply-content{color:var(--gray);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:150px;display:inline-block}.message.sent .message-reply .reply-content{color:#ffffffb3}.recalled-message{padding:10px 14px;color:var(--gray);font-size:13px;font-style:italic}.recalled-text{color:var(--gray)}.message-row.recalled .message-bubble{background:transparent!important;box-shadow:none}.message-row.recalled{opacity:.7;justify-content:center!important}.message-row.recalled .message-bubble-wrapper{max-width:100%}.recalled-message{text-align:center;padding:8px 16px;color:var(--gray);font-size:12px;font-style:italic;background:#f0f0f0;border-radius:12px}.progress-float{position:fixed;bottom:100px;right:30px;z-index:9999;font-family:inherit}.progress-float-header{width:50px;height:50px;border-radius:25px;background:var(--primary);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 12px #4361ee66;transition:all .3s}.progress-float-header:hover{transform:scale(1.05)}.progress-float.expanded .progress-float-header{border-radius:12px 12px 0 0;width:280px;height:40px;flex-direction:row;gap:8px}.progress-icon{font-size:20px}.progress-count{font-size:14px;font-weight:600}.progress-mini-bar{width:30px;height:4px;background:#ffffff4d;border-radius:2px;overflow:hidden}.progress-float.expanded .progress-mini-bar{display:none}.progress-mini-fill{height:100%;background:#fff;transition:width .3s}.progress-float-list{background:#fff;border-radius:0 0 12px 12px;box-shadow:0 4px 12px #00000026;max-height:300px;overflow-y:auto;width:280px}.progress-item{padding:10px 12px;border-bottom:1px solid var(--border);display:flex;flex-direction:column;gap:6px}.progress-item:last-child{border-bottom:none}.progress-item-info{display:flex;align-items:center;gap:8px}.progress-item-icon{font-size:14px}.progress-item-name{flex:1;font-size:13px;color:var(--dark);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.progress-bar{height:6px;background:#e9ecef;border-radius:3px;overflow:hidden}.progress-fill{height:100%;background:var(--primary);transition:width .3s}.progress-percent{font-size:11px;color:var(--gray);text-align:right}.progress-status{font-size:12px}.progress-status.done{color:var(--online)}.progress-status.error{color:#ef4444}.progress-remove{position:absolute;right:8px;top:8px;width:20px;height:20px;border-radius:50%;border:none;background:#f0f0f0;cursor:pointer;font-size:14px;display:flex;align-items:center;justify-content:center}.progress-item{position:relative}.admin-login{width:100%;height:100vh;display:flex;justify-content:center;align-items:center;background:linear-gradient(135deg,#667eea,#764ba2)}.admin-login-box{background:#fff;padding:40px;border-radius:12px;box-shadow:0 10px 40px #0003;width:400px}.admin-login-box h2{text-align:center;margin-bottom:30px;color:#333}.admin-login-box .form-group{margin-bottom:20px}.admin-login-box .form-group label{display:block;margin-bottom:8px;color:#555;font-weight:500}.admin-login-box .form-group input{width:100%;padding:12px;border:1px solid #ddd;border-radius:6px;font-size:14px}.admin-login-box .btn-primary{width:100%;padding:12px;background:var(--primary);color:#fff;border:none;border-radius:6px;font-size:16px;cursor:pointer}.admin-login-box .btn-primary:hover{background:var(--primary-dark)}.admin-login-box .btn-primary:disabled{background:#ccc;cursor:not-allowed}.admin-login-box .error-message{color:#ef4444;margin-bottom:15px;font-size:14px}.admin-login-box .back-link{text-align:center;margin-top:20px}.admin-login-box .back-link a{color:var(--primary);text-decoration:none}.admin-panel{width:100%;height:100vh;display:flex;flex-direction:column;background:#f5f5f5;border-radius:20px}.admin-header{background:var(--primary);color:#fff;padding:15px 30px;display:flex;justify-content:space-between;align-items:center;border-top-left-radius:20px;border-top-right-radius:20px}.admin-header h1{font-size:20px}.admin-header .btn-logout{padding:8px 16px;background:#fff3;color:#fff;border:none;border-radius:6px;cursor:pointer}.admin-item-list{height:500px;overflow-y:auto}.admin-tabs{background:#fff;padding:0 30px;border-bottom:1px solid #e0e0e0;display:flex;gap:20px}.admin-tabs button{padding:15px 0;background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;font-size:14px;color:#666}.admin-tabs button.active{color:var(--primary);border-bottom-color:var(--primary)}.admin-content{flex:1;padding:20px 30px;overflow:auto}.admin-toolbar{display:flex;gap:15px;margin-bottom:20px}.admin-toolbar .search-input{flex:1;max-width:300px;padding:10px 15px;border:1px solid #ddd;border-radius:6px}.admin-toolbar .btn-add{padding:10px 20px;background:var(--primary);color:#fff;border:none;border-radius:6px;cursor:pointer}.admin-table{width:100%;background:#fff;border-radius:8px;border-collapse:collapse;overflow:hidden;box-shadow:0 2px 8px #0000001a}.admin-table th,.admin-table td{padding:12px 15px;text-align:left;border-bottom:1px solid #eee}.admin-table th{background:#f8f9fa;font-weight:600;color:#555}.admin-table td button{padding:6px 12px;margin-right:5px;background:#e9ecef;border:none;border-radius:4px;cursor:pointer;font-size:12px}.admin-table td button:hover{background:#dee2e6}.admin-table td .btn-danger{background:#fee2e2;color:#dc2626}.admin-table td .btn-danger:hover{background:#fecaca}.pagination{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:20px;padding:15px;background:#fff;border-radius:8px}.pagination button{padding:6px 12px;border:1px solid #ddd;background:#fff;border-radius:4px;cursor:pointer;font-size:13px}.pagination button:hover:not(:disabled){background:#f0f0f0}.pagination button:disabled{opacity:.5;cursor:not-allowed}.pagination span{padding:0 15px;font-size:14px;color:#666}.status-badge{padding:4px 8px;border-radius:4px;font-size:12px}.status-badge.status-online{background:#dcfce7;color:#166534}.status-badge.status-online.offline{background:var(--offline);color:#166534}.status-badge.status-away{background:#fef9c3;color:#854d0e}.status-badge.status-offline{background:#f1f5f9;color:#64748b}.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px}.stat-card{background:#fff;padding:25px;border-radius:10px;box-shadow:0 2px 8px #0000001a}.stat-card.highlight{background:var(--primary);color:#fff}.stat-label{font-size:14px;color:#666;margin-bottom:10px}.stat-card.highlight .stat-label{color:#fffc}.stat-value{font-size:28px;font-weight:600}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.modal{background:#fff;padding:25px;border-radius:10px;width:450px;max-height:80vh;overflow:auto}.modal-large{width:700px}.modal h3{margin-bottom:20px;color:#333}.modal .form-group{margin-bottom:15px}.modal .form-group label{display:block;margin-bottom:5px;color:#555;font-weight:500}.modal .form-group input,.modal .form-group textarea,.modal .form-group select{width:100%;padding:10px;border:1px solid #ddd;border-radius:6px;font-size:14px}.modal .form-group textarea{min-height:80px;resize:vertical}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}.modal-actions button{padding:10px 20px;border:none;border-radius:6px;cursor:pointer}.modal-actions button:first-child{background:#e9ecef;color:#333}.modal-actions .btn-primary{background:var(--primary);color:#fff}.filter-bar{margin-bottom:15px}.filter-bar select{padding:8px 12px;border:1px solid #ddd;border-radius:6px;font-size:14px;background:#fff}.checkbox-list{max-height:300px;overflow-y:auto;border:1px solid #ddd;border-radius:6px;padding:10px}.checkbox-item{display:flex;align-items:center;gap:8px;padding:8px;cursor:pointer;border-bottom:1px solid #eee}.checkbox-item:last-child{border-bottom:none}.checkbox-item input[type=checkbox]{width:16px;height:16px}.messages-list{max-height:400px;overflow-y:auto}.message-item{padding:15px;border-bottom:1px solid #eee;display:flex;flex-direction:column;gap:8px}.message-info{display:flex;gap:15px;font-size:12px;color:#888}.message-content{color:var(--chat-text);word-wrap:break-word}.message-item .btn-small{align-self:flex-start;padding:4px 8px;font-size:11px;margin-top:5px}.no-data{text-align:center;padding:40px;color:#999}.login-footer .admin-link{margin-top:15px}.login-footer .admin-link a{color:var(--primary);text-decoration:none;font-size:14px}.login-footer .admin-link a:hover{text-decoration:underline}.members-admin-list{max-height:300px;overflow-y:auto;border:1px solid #ddd;border-radius:6px}.owners-list{margin-bottom:15px}.owner-item{display:flex;justify-content:space-between;align-items:center;padding:10px 15px;background:#f8f9fa;border-radius:6px;margin-bottom:8px}.member-admin-item{display:flex;justify-content:space-between;align-items:center;padding:12px 15px;border-bottom:1px solid #eee}.member-admin-item:last-child{border-bottom:none}.member-info{display:flex;align-items:center;gap:8px}.member-name{font-weight:500;color:var(--dark)}.member-username{color:#888;font-size:13px}.owner-badge{background:#fef9c3;color:#854d0e;padding:2px 8px;border-radius:4px;font-size:12px;margin-left:8px}.member-remove-btn{padding:6px 12px;margin-right:5px;border:none;border-radius:4px;cursor:pointer;font-size:12px;background:#fee2e2;color:#dc2626}.user-panel{background:#fff;border-radius:12px;width:320px;max-width:90vw;box-shadow:0 10px 40px #0003;overflow:hidden}.user-panel-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:20px;display:flex;justify-content:space-between;align-items:center}.user-panel-header h3{margin:0;font-size:18px}.user-panel-header .close-btn{background:none;border:none;color:#fff;font-size:24px;cursor:pointer;padding:0;line-height:1}.user-panel-content{padding:30px;text-align:center}.user-panel-avatar{width:100px;height:100px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;display:flex;align-items:center;justify-content:center;font-size:40px;font-weight:700;margin:0 auto 20px;box-shadow:0 4px 15px #667eea66}.user-panel-info{text-align:left}.user-panel-item{display:flex;padding:12px 0;border-bottom:1px solid #eee}.user-panel-item:last-child{border-bottom:none}.user-panel-item .label{color:#666;width:70px;flex-shrink:0}.user-panel-item .value.status-online{color:var(--online);background:none}.scroll-to-bottom-btn{position:fixed;bottom:150px;right:80px;width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px #00000026;transition:all .2s ease;z-index:100;animation:fadeIn .2s ease}.scroll-to-bottom-btn:hover{background:var(--primary-dark, #2563eb);transform:scale(1.1);box-shadow:0 4px 12px #0003}.scroll-to-bottom-btn svg{width:20px;height:20px}