*{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: #4e2c99;--chat-recv-bubble: #313b57;--chat-text: var(--dark);--chat-send-text: var(--dark);--chat-sys-message: #232a3c;--settings-item: var(--light-gray);background:linear-gradient(180deg,#162151,#1a072d);color:#f3f4f6;--background: linear-gradient(180deg, #162151 0%, #1a072d 100%);--float-panel: #1c2435;--login: linear-gradient(180deg, #162151 0%, #1a072d 100%)}[data-theme=dark] body{background:var(--background)}[data-theme=dark] .contact{border-bottom:1px solid #374151}[data-theme=dark] .contact:hover{background:#374151}[data-theme=dark] .contact.active{background:#4b5563}[data-theme=dark] .chat-area{background:#111827}[data-theme=dark] .chat-header{background:#1f2937;border-bottom:1px solid #374151}[data-theme=dark] .chat-header-info .chat-title-text{color:#f3f4f6}[data-theme=dark] .chat-header-info .chat-status-text{color:#9ca3af}[data-theme=dark] .message-input-container{background:#1f2937;border-top:1px solid #374151}[data-theme=dark] .message-input{background:#374151;border:1px solid #4b5563;color:#f3f4f6}[data-theme=dark] .message-input::-moz-placeholder{color:#9ca3af}[data-theme=dark] .message-input::placeholder{color:#9ca3af}[data-theme=dark] .message-sent{background:#4f46e5}[data-theme=dark] .message-received{background:#374151}[data-theme=dark] .group-settings-header{background:#262c3a}[data-theme=dark] .message-content{color:#f3f4f6}[data-theme=dark] .message-sender{color:#9ca3af}[data-theme=dark] .message-time,[data-theme=dark] .message-status{color:#6b7280}[data-theme=dark] .user-list-container{background:#1f2937}[data-theme=dark] .tabs{background:#1f2937;border-bottom:1px solid #374151}[data-theme=dark] .tab-item{color:#9ca3af}[data-theme=dark] .tab-item.active{border-bottom-color:#6366f1}[data-theme=dark] .search-box input{background:#374151;border:1px solid #4b5563;color:#f3f4f6}[data-theme=dark] .search-box input::-moz-placeholder{color:#9ca3af}[data-theme=dark] .search-box input::placeholder{color:#9ca3af}[data-theme=dark] .avatar{background:linear-gradient(45deg,var(--primary),var(--secondary));color:#f3f4f6}[data-theme=dark] .contact-name{color:#f3f4f6}[data-theme=dark] .contact-message{color:#9ca3af}[data-theme=dark] .contact-time{color:#6b7280}[data-theme=dark] .modal-overlay{background:#000000b3}[data-theme=dark] .modal{background:#1f2937;border:1px solid #374151}[data-theme=dark] .modal h2,[data-theme=dark] .modal h3{color:#f3f4f6}[data-theme=dark] .close-btn{color:#9ca3af}[data-theme=dark] .user-panel-header{background:#1f2937;border-bottom:1px solid #374151}[data-theme=dark] .user-panel-info h3{color:#f3f4f6}[data-theme=dark] .settings-panel{background:#111827}[data-theme=dark] .settings-header{background:#1f2937;border-bottom:1px solid #374151}[data-theme=dark] .settings-header h2{color:#f3f4f6}[data-theme=dark] .settings-content{background:#1f2937}[data-theme=dark] .settings-user h3{color:#f3f4f6}[data-theme=dark] .settings-user p{color:#9ca3af}[data-theme=dark] .settings-item label{color:#f3f4f6}[data-theme=dark] .settings-item input,[data-theme=dark] .settings-item select{background:#374151;border:1px solid #4b5563;color:#f3f4f6}[data-theme=dark] .settings-save-btn{background:#6366f1;color:#fff}[data-theme=dark] .settings-save-btn:hover{background:#4f46e5}[data-theme=dark] .member-item:hover{background:#374151}#root{width:98%;display:flex;align-items:center;justify-content:center}body{background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;display:flex;justify-content:center;align-items:center;padding:10px;width:100%}.chat-container{width:100%;height:90vh;background:#fff;border-radius:20px;box-shadow:0 20px 50px #0000004d;display:flex;overflow:hidden}.sidebar{width:280px;min-width:260px;background:var(--sidebar);border-right:1px solid var(--border);display:flex;flex-direction:column;transition:all .3s ease}.sidebar-header{padding:20px;border-bottom:1px solid 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.message-content{color:var(--chat-send-text)}.message-input-area{padding:8px 5px;display:flex;align-items:center;flex-shrink:0}.input-actions{display:flex;gap:2px;margin-right:15px;flex-shrink:0}.input-action{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--gray);transition:all .2s;background:transparent;border:none;font-size:18px}.input-action:hover{background:var(--light-gray);color:var(--primary)}.input-action.active{background:#ff47571a;color:#ff4757}.message-input{flex:1;border:1px solid var(--border);border-radius:20px;padding:12px 20px;resize:none;min-height:40px;max-height:120px;font-size:15px;transition:all .3s;font-family:inherit;line-height:1.5}.message-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px 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.2s;display:flex;align-items:center;justify-content:center}.nav-logout:hover{background:#fff3}.drive-panel{flex:1;display:flex;background:#fff;border-radius:20px}.drive-sidebar{width:220px;min-width:220px;background:linear-gradient(180deg,#667eea 10%,#764ba2);display:flex;flex-direction:column}.drive-storage{padding:20px;border-bottom:1px solid rgba(255,255,255,.1)}.drive-storage-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.drive-storage-label{font-size:13px;font-weight:500;color:#ffffffe6}.drive-storage-text{font-size:12px;color:#fff9}.drive-storage-bar{height:4px;background:#fff3;border-radius:2px;overflow:hidden}.drive-storage-fill{height:100%;width:16%;background:#4ade80;border-radius:2px}.drive-nav{flex:1;padding:12px;display:flex;flex-direction:column;gap:4px}.drive-nav-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border:none;background:transparent;color:#fffc;font-size:14px;font-weight:500;border-radius:12px;cursor:pointer;transition:all .2s;text-align:left}.drive-nav-item:hover{background:#ffffff1a;color:#fff}.drive-nav-item.active{background:#fff3;color:#fff}.drive-main{flex:1;display:flex;flex-direction:column;min-width:0}.drive-toolbar{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;border-bottom:1px solid #e5e7eb;background:#fafafa}.drive-toolbar-left{display:flex;align-items:center;gap:12px}.drive-back-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:#e5e7eb;border-radius:8px;cursor:pointer;transition:all .2s;color:#6b7280}.drive-back-btn:hover{background:#d1d5db}.drive-breadcrumb{display:flex;align-items:center;gap:4px}.drive-breadcrumb-item{background:none;border:none;font-size:14px;color:#6b7280;cursor:pointer;padding:4px 8px;border-radius:6px;transition:all .2s}.drive-breadcrumb-item:hover{background:#e5e7eb;color:#374151}.drive-breadcrumb-item.current{color:#111827;font-weight:500}.drive-breadcrumb-sep{color:#9ca3af}.drive-toolbar-right{display:flex;align-items:center;gap:12px}.drive-search{position:relative;display:flex;align-items:center}.drive-search-icon{position:absolute;left:12px;color:#9ca3af}.drive-search-input{width:200px;padding:8px 12px 8px 36px;border:1px solid #e5e7eb;border-radius:8px;font-size:14px;outline:none;transition:all .2s;background:#fff}.drive-search-input:focus{border-color:#6366f1;box-shadow:0 0 0 3px #6366f11a}.drive-btn{display:flex;align-items:center;gap:8px;padding:8px 16px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s;border:none}.drive-btn-primary{background:var(--primary);color:#fff}.drive-btn-primary:hover{opacity:.9;transform:translateY(-1px)}.drive-btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.drive-btn-outline{background:#fff;color:#374151;border:1px solid #e5e7eb}.drive-btn-outline:hover{background:#f9fafb;border-color:#d1d5db}.drive-btn-danger{background:#fff;color:#dc2626;border:1px solid #fecaca}.drive-btn-danger:hover{background:#fef2f2;border-color:#fca5a5}.drive-content{flex:1;overflow-y:auto;height:100%}.drive-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:#9ca3af}.drive-empty-icon{margin-bottom:16px;opacity:.5}.drive-empty-title{font-size:18px;font-weight:500;color:#6b7280;margin-bottom:8px}.drive-empty-text{font-size:14px}.drive-loading-spinner{width:40px;height:40px;border:3px solid #e5e7eb;border-top-color:#764ba2;border-radius:50%;animation:spin .8s linear infinite;margin-bottom:16px}@keyframes spin{to{transform:rotate(360deg)}}.drive-list{background:#fff;border-radius:12px}.drive-list-header{display:flex;align-items:center;padding:12px 16px;background:#f9fafb;border-bottom:1px solid #e5e7eb;font-size:13px;font-weight:500;color:#6b7280}.drive-list-body{max-height:calc(100vh - 320px)}.drive-list-row{display:flex;align-items:center;padding:12px 16px;border-bottom:1px solid #f3f4f6;transition:background 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#00000026;padding:6px;min-width:140px;z-index:300}.drive-menu-item{display:flex;align-items:center;gap:10px;width:100%;padding:10px 14px;border:none;background:transparent;font-size:13px;color:#374151;border-radius:8px;cursor:pointer;transition:all .15s;text-align:left}.drive-menu-item:hover{background:#f3f4f6}.drive-menu-item-danger{color:#dc2626}.drive-menu-item-danger:hover{background:#fef2f2}.drive-checkbox{width:18px;height:18px;border:2px solid #d1d5db;border-radius:4px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s;background:#fff}.drive-checkbox:hover{border-color:#6366f1}.drive-checkbox.checked{background:#6366f1;border-color:#6366f1;color:#fff}.drive-item-icon{flex-shrink:0}.drive-item-folder{color:#f59e0b}.drive-item-file{color:#3b82f6}.drive-item-name{font-weight:500;color:#111827;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.drive-item-name:hover{text-decoration:underline}.drive-item-shared{font-size:11px;padding:2px 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.15s}.modal-close:hover{background:#f3f4f6;color:#6b7280}.modal-body{padding:20px}.modal-footer{display:flex;justify-content:flex-end;gap:12px;padding:16px 20px;border-top:1px solid #e5e7eb}.drive-input{width:100%;padding:10px 14px;border:1px solid #e5e7eb;border-radius:8px;font-size:14px;outline:none;transition:all .2s}.drive-input:focus{border-color:#6366f1;box-shadow:0 0 0 3px #6366f11a}.drive-upload-zone{border:2px dashed #d1d5db;border-radius:12px;padding:48px;text-align:center;transition:all .2s}.drive-upload-zone:hover{border-color:#6366f1;background:#f9fafb}.drive-upload-icon{color:#d1d5db;margin-bottom:16px}.drive-upload-text{font-size:14px;color:#6b7280;margin-bottom:4px}.drive-upload-hint{font-size:13px;color:#9ca3af;margin-bottom:16px}.drive-upload-btn{display:inline-flex;cursor:pointer}.hidden{display:none}.share-modal{width:400px}.share-item-info{display:flex;flex-direction:column;align-items:center;padding:20px 0;border-bottom:1px solid #e5e7eb;margin-bottom:20px}.share-item-icon{margin-bottom:12px}.share-item-icon.folder{color:#f59e0b}.share-item-icon.file{color:#3b82f6}.share-item-name{font-size:16px;font-weight:500;color:#111827}.share-toggle{display:flex;justify-content:space-between;align-items:center;padding:12px 0}.share-toggle-label{display:flex;align-items:center;gap:10px;font-size:14px;color:#374151}.share-toggle-btn{width:44px;height:24px;border-radius:12px;background:#e5e7eb;border:none;cursor:pointer;position:relative;transition:all .2s}.share-toggle-btn.active{background:#6366f1}.share-toggle-slider{position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:50%;background:#fff;transition:all .2s;box-shadow:0 1px 3px #0003}.share-toggle-btn.active .share-toggle-slider{left:22px}.share-link{margin-top:20px}.share-link-label{font-size:13px;color:#6b7280;margin-bottom:8px}.share-link-box{display:flex;gap:8px}.share-link-input{flex:1;padding:8px 12px;border:1px solid #e5e7eb;border-radius:6px;font-size:13px;color:#6b7280;background:#f9fafb}.share-link-copy{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid #e5e7eb;background:#fff;border-radius:6px;cursor:pointer;color:#6b7280;transition:all .15s}.share-link-copy:hover{background:#f3f4f6;color:#374151}.settings-panel{flex:1;display:flex;flex-direction:column;background:var(--background)}.settings-header{padding:20px;border-bottom:1px solid var(--border)}.settings-header h2{font-size:20px;color:var(--dark)}.settings-content{flex:1;padding:30px;background:#f0f4f8;overflow-y:auto}.settings-user{text-align:center;margin-bottom:30px}.settings-avatar{width:80px;height:80px;border-radius:50%;background:linear-gradient(45deg,var(--primary),var(--secondary));color:#fff;display:flex;align-items:center;justify-content:center;font-size:30px;font-weight:700;margin:0 auto 15px}.settings-user h3{color:var(--dark);margin-bottom:5px}.settings-user p{color:var(--online);font-size:14px}.settings-item{background:var(--settings-item);padding:15px 20px;border-radius:12px;margin-bottom:15px;box-shadow:0 1px 3px #0000001a}.settings-item label{display:block;color:var(--gray);font-size:13px;margin-bottom:8px}.settings-item input,.settings-item select{width:100%;padding:10px;border:1px solid var(--border);border-radius:8px;font-size:14px;box-sizing:border-box}.settings-item input:focus,.settings-item select:focus{outline:none;border-color:var(--primary)}.settings-save-btn{width:100%;padding:14px;background:var(--primary);color:#fff;border:none;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer;margin-top:20px;transition:all .2s}.settings-save-btn:hover{background:var(--primary-dark)}.login-header{margin-bottom:30px}.login-header h1{color:var(--primary);font-size:28px;margin-bottom:10px}.login-header p{color:var(--gray)}.input-group{margin-bottom:20px;text-align:left}.input-group label{display:block;margin-bottom:8px;font-weight:500;color:var(--dark)}.input-group input{width:100%;padding:12px 15px;border:1px solid var(--border);border-radius:10px;font-size:16px;transition:all .3s;box-sizing:border-box;background:var(--light);color:var(--dark)}.input-group input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #4361ee33}.login-button{width:100%;padding:12px;background:var(--primary);color:#fff;border:none;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s;margin-top:10px}.login-button:hover{background:var(--primary-dark);transform:translateY(-2px)}.login-button:active{transform:translateY(0)}.login-footer{margin-top:20px;color:var(--gray);font-size:14px}@media (max-width: 768px){.chat-container{height:95vh}.sidebar{width:80px}.contact-info,.contact-time,.sidebar-header .logo span,.user-actions{display:none}.sidebar-header{justify-content:center;padding:15px 0}.avatar{margin-right:0}.contact{justify-content:center;padding:15px 0}}@media (max-width: 480px){body{padding:10px}.chat-container{height:100vh;border-radius:0}.sidebar{position:absolute;left:-100%;z-index:100;height:100%}.sidebar.active{left:0}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}.hidden{display:none!important}.empty-chat{flex:1;display:flex;align-items:center;justify-content:center;background:var(--empty-chat)}.empty-chat-box{text-align:center;padding:40px;background:var(--float-panel);border-radius:20px;box-shadow:0 4px 20px #0000001a;width:50%;height:60%}.empty-chat-icon{width:80px;height:80px;background:#e0e7ff;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;color:var(--primary);font-size:32px}.empty-chat h2{color:var(--dark);font-size:24px;margin-bottom:10px}.empty-chat 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 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button:hover{background:#e9ecef}.message-attachments{margin-bottom:8px}.message-attachment{margin-bottom:4px}.message-image-wrapper{position:relative;display:inline-block}.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)}.encrypted-image-placeholder{width:200px;height:150px;background:#f0f0f0;border-radius:8px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px}.encrypted-image-placeholder.decrypt-failed{background:#fee2e2}.encrypted-icon{font-size:32px}.encrypted-label{font-size:12px;color:#666}.decrypt-failed .encrypted-label{color:#dc2626}.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 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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 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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:var(--light);padding:10px;display:flex;flex-direction:column;gap:10px;width:150px;border-bottom-left-radius:20px}.admin-tabs button{padding:15px 10px;background:none;border:none;border-left:2px solid transparent;border-radius:5px;cursor:pointer;font-size:14px;color:#666}.admin-tabs button.active{color:var(--primary);border-left-color:var(--primary);background-color:#edf1ff}.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}.btn-add{padding:10px 20px;background:var(--primary);color:#fff;border:none;border-radius:6px;cursor:pointer}.btn-refresh{padding:10px 20px;background:#86e6d4;color:#fff;border:none;border-radius:6px;cursor:pointer}.btn-danger{padding:10px 20px;background:#ee434b;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 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.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-content .mention-text{color:#1a73e8;font-weight:500;background:#1a73e81a;padding:1px 4px;border-radius:3px}.message-content.decrypt-error{color:#dc2626;padding:8px 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.2s}.avatar-upload-btn:hover{background:#000c}.user-panel-edit-item{text-align:left;margin-bottom:15px}.user-panel-edit-item label{display:block;margin-bottom:5px;font-weight:500;color:var(--text-secondary, #666)}.user-panel-edit-item input,.user-panel-edit-item textarea{width:100%;padding:10px;border:1px solid #ddd;border-radius:8px;font-size:14px;background:var(--input-bg, #fff);color:var(--text-primary, #333)}.user-panel-edit-item textarea{resize:vertical;min-height:60px}.user-panel-edit-actions{display:flex;gap:10px;justify-content:center;margin-top:20px}.user-panel-edit-actions button{padding:10px 30px;border-radius:8px;cursor:pointer;border:none;font-size:14px;transition:all .2s}.user-panel-edit-actions button:first-child{background:#e5e7eb;color:#374151}.user-panel-actions{margin-top:20px;text-align:center}.user-panel-actions button{padding:10px 30px;border-radius:8px;cursor:pointer;border:none;font-size:14px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;transition:all .2s}.user-panel-actions button:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.typing-indicator-header{padding:6px 16px;display:flex;align-items:center;gap:8px;color:var(--text-secondary, #888);font-size:14px;background:var(--chat, white);border-bottom:1px solid var(--border)}.typing-indicator-input{padding:8px 16px;display:flex;align-items:center;gap:8px;color:var(--text-secondary, #888);font-size:12px;background:var(--chat, white);border-top:1px solid var(--border)}.typing-dots{display:flex;gap:3px}.typing-dots span{width:6px;height:6px;background:var(--text-secondary, #888);border-radius:50%;animation:typing-bounce 1.4s infinite ease-in-out}.typing-dots span:nth-child(1){animation-delay:0s}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes 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.file-icon{color:#666}.shared-view-item-name{flex:1;font-size:14px}.shared-view-item-size{width:100px;text-align:right;color:#999;font-size:13px}.shared-view-item-action{width:100px;text-align:right}.shared-view-item-action button{padding:6px 12px;border:1px solid #ddd;border-radius:4px;background:#fff;cursor:pointer;display:flex;align-items:center;gap:6px}.shared-view-item-action button:hover{background:#f5f5f5}.shared-view-loading,.shared-view-error{height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#666;width:100%;gap:10px}.shared-view-error p{color:#f44}.drive-settings-panel{padding:20px}.drive-settings-panel h3{margin-bottom:20px;color:#333;font-size:18px}.drive-stats-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin-bottom:30px}.form-section{background:#fff;padding:20px;border-radius:8px;margin-bottom:20px;box-shadow:0 1px 3px #0000001a}.form-section h4{margin-bottom:15px;color:#333;font-size:16px}.storage-type-selector{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.storage-type-option{display:flex;flex-direction:column;align-items:center;padding:20px;border:2px solid #e0e0e0;border-radius:10px;cursor:pointer;transition:all .2s ease;text-align:center}.storage-type-option:hover{border-color:var(--primary);background:#f8f9ff}.storage-type-option.selected{border-color:var(--primary);background:#eef2ff}.storage-type-option input{display:none}.storage-type-icon{font-size:32px;margin-bottom:8px}.storage-type-icon-img{width:40px;height:40px;margin-bottom:8px;-o-object-fit:contain;object-fit:contain}.storage-type-name{font-weight:600;color:#333;margin-bottom:5px}.storage-type-desc{font-size:12px;color:#666}.form-actions{margin-top:20px;display:flex;align-items:center}.storage-management-panel{padding:20px}.storage-management-panel h3{margin-bottom:20px;color:#333;font-size:18px}.storage-stats-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-bottom:30px}