*{box-sizing:border-box;margin:0;padding:0}body{-webkit-font-smoothing:antialiased;background:#f0f2f5;background:var(--bg-main,#f0f2f5);color:#1a1a2e;color:var(--text-primary,#1a1a2e);font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;overflow:hidden}#root,body{height:100vh}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:#0000}::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#a0a0a0}button,input,select,textarea{font-family:inherit}:root,[data-theme=light]{--primary:#1976d2;--primary-dark:#1565c0;--primary-darker:#0d47a1;--primary-light:#e3f2fd;--bg-main:#f0f2f5;--bg-surface:#fff;--bg-chat:#f8f9fa;--bg-input:#f5f5f5;--bg-hover:#f5f5f5;--bg-active:#e3f2fd;--border:#e0e0e0;--text-primary:#1a1a2e;--text-secondary:#666;--text-tertiary:#999;--text-preview:#777;--msg-user-bg:#fff;--msg-user-border:#e0e0e0;--msg-support-bg:#1976d2;--msg-system-bg:#e3f2fd;--msg-system-text:#1565c0;--status-open-bg:#e8f5e9;--status-open-text:#2e7d32;--status-progress-bg:#fff3e0;--status-progress-text:#e65100;--status-closed-bg:#f5f5f5;--status-closed-text:#757575;--cat-bg:#e3f2fd;--cat-text:#1565c0;--danger:#d32f2f;--danger-light:#ffebee;--danger-border:#ffcdd2;--success:#2e7d32;--success-light:#e8f5e9;--shadow-toast:#00000026;--shadow-modal:#0000004d;--shadow-login:#0000004d}[data-theme=dark]{--primary:#64b5f6;--primary-dark:#42a5f5;--primary-darker:#1e88e5;--primary-light:#1a2a3a;--bg-main:#121212;--bg-surface:#1e1e1e;--bg-chat:#181818;--bg-input:#2a2a2a;--bg-hover:#2a2a2a;--bg-active:#1a2a3a;--border:#333;--text-primary:#e0e0e0;--text-secondary:#aaa;--text-tertiary:#777;--text-preview:#888;--msg-user-bg:#2a2a2a;--msg-user-border:#444;--msg-support-bg:#1565c0;--msg-system-bg:#1a2a3a;--msg-system-text:#90caf9;--status-open-bg:#1b3a1b;--status-open-text:#66bb6a;--status-progress-bg:#3a2a1a;--status-progress-text:#ffb74d;--status-closed-bg:#2a2a2a;--status-closed-text:#999;--cat-bg:#1a2a3a;--cat-text:#90caf9;--danger:#ef5350;--danger-light:#3a1a1a;--danger-border:#5a2a2a;--success:#66bb6a;--success-light:#1b3a1b;--shadow-toast:#0006;--shadow-modal:#0009;--shadow-login:#00000080}.login-page{align-items:center;background:linear-gradient(135deg,#1976d2,#1565c0 50%,#0d47a1);display:flex;height:100vh;justify-content:center}[data-theme=dark] .login-page{background:linear-gradient(135deg,#0d47a1,#0a3570 50%,#061f3a)}.login-card{background:#fff;background:var(--bg-surface);border-radius:16px;box-shadow:0 20px 60px #0000004d;box-shadow:0 20px 60px var(--shadow-login);max-width:90vw;padding:48px 40px;text-align:center;width:400px}.login-card h1{color:#1976d2;color:var(--primary);font-size:24px;font-weight:700;margin-bottom:8px}.login-card p{color:#666;color:var(--text-secondary);font-size:14px;margin-bottom:32px}.login-card .icon-big{color:#1976d2;color:var(--primary);font-size:48px;margin-bottom:16px}.login-input{background:#f5f5f5;background:var(--bg-input);border:1px solid #e0e0e0;border:1px solid var(--border);border-radius:8px;color:#1a1a2e;color:var(--text-primary);font-size:14px;margin-bottom:16px;outline:none;padding:12px 16px;transition:border-color .2s;width:100%}.login-input:focus{border-color:#1976d2;border-color:var(--primary)}.login-btn{background:#1976d2;background:var(--primary);border:none;border-radius:8px;color:#fff;cursor:pointer;font-size:15px;font-weight:600;padding:12px;transition:background .2s;width:100%}.login-btn:hover{background:#1565c0;background:var(--primary-dark)}.login-btn:disabled{cursor:not-allowed;opacity:.5}.login-error{color:#d32f2f;color:var(--danger);font-size:13px;margin-bottom:12px}.app-layout{overflow:hidden}.app-layout,.sidebar{display:flex;height:100vh}.sidebar{background:#fff;background:var(--bg-surface);border-right:1px solid #e0e0e0;border-right:1px solid var(--border);flex-direction:column;min-width:320px;width:320px}.sidebar-header{align-items:center;background:#1976d2;border-bottom:1px solid #e0e0e0;border-bottom:1px solid var(--border);color:#fff;display:flex;gap:8px;justify-content:space-between;padding:14px 16px}[data-theme=dark] .sidebar-header{background:#0d47a1}.sidebar-header h2{align-items:center;display:flex;flex-shrink:1;font-size:17px;font-weight:600;gap:6px;min-width:0}.sidebar-header-actions{display:flex;flex-shrink:0;gap:4px}.sidebar-header-actions button{align-items:center;background:#ffffff26;border:none;border-radius:8px;color:#fff;cursor:pointer;display:flex;height:34px;justify-content:center;transition:background .2s;width:34px}.sidebar-header-actions button:hover{background:#ffffff40}.sidebar-filters{grid-gap:6px;border-bottom:1px solid #e0e0e0;border-bottom:1px solid var(--border);display:grid;gap:6px;grid-template-columns:1fr 1fr 1fr 1fr;padding:8px 12px}.filter-chip{background:#fff;background:var(--bg-surface);border:1px solid #e0e0e0;border:1px solid var(--border);border-radius:20px;color:#1a1a2e;color:var(--text-primary);cursor:pointer;font-size:11px;font-weight:500;padding:6px 4px;text-align:center;transition:all .2s;white-space:nowrap}.filter-chip.active{background:#1976d2;background:var(--primary);border-color:#1976d2;border-color:var(--primary);color:#fff}.filter-chip:hover:not(.active){background:#f5f5f5;background:var(--bg-hover)}.sidebar-search{border-bottom:1px solid #e0e0e0;border-bottom:1px solid var(--border);padding:12px 16px}.sidebar-search input{background:#f5f5f5;background:var(--bg-input);border:1px solid #e0e0e0;border:1px solid var(--border);border-radius:8px;color:#1a1a2e;color:var(--text-primary);font-size:13px;outline:none;padding:8px 12px 8px 36px;width:100%}.sidebar-search input:focus{border-color:#1976d2;border-color:var(--primary)}.search-wrapper{position:relative}.search-wrapper .material-icons-outlined{color:#999;color:var(--text-tertiary);font-size:18px;left:10px;position:absolute;top:50%;transform:translateY(-50%)}.case-list{flex:1 1;overflow-y:auto;padding:8px}.case-item{border-radius:10px;cursor:pointer;margin-bottom:2px;padding:12px 16px;position:relative;transition:background .15s}.case-item:hover{background:#f5f5f5;background:var(--bg-hover)}.case-item.active{background:#e3f2fd;background:var(--bg-active)}.case-item-header{align-items:center;display:flex;justify-content:space-between;margin-bottom:4px}.case-number{color:#1976d2;color:var(--primary);font-size:13px;font-weight:600}.case-time{color:#999;color:var(--text-tertiary);font-size:11px}.case-company{color:#1a1a2e;color:var(--text-primary);font-size:13px;font-weight:500;margin-bottom:2px}.case-preview{color:#777;color:var(--text-preview);font-size:12px;max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.case-meta{align-items:center;display:flex;gap:8px;margin-top:4px}.case-status{border-radius:10px;font-size:10px;font-weight:600;letter-spacing:.5px;padding:2px 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var(--border);display:flex;justify-content:space-between;padding:16px 24px}.case-header-left h3{align-items:center;color:#1a1a2e;color:var(--text-primary);display:flex;font-size:16px;font-weight:600;gap:8px;margin-bottom:4px}.case-header-left .case-info{align-items:center;color:#666;color:var(--text-secondary);display:flex;font-size:13px;gap:12px}.case-header-right{display:flex;gap:8px}.status-btn{align-items:center;background:#fff;background:var(--bg-surface);border:1px solid #e0e0e0;border:1px solid var(--border);border-radius:8px;color:#1a1a2e;color:var(--text-primary);cursor:pointer;display:flex;font-size:13px;font-weight:500;gap:6px;padding:8px 16px;transition:all .2s}.status-btn:hover{background:#f5f5f5;background:var(--bg-hover)}.status-btn.close-btn{border-color:#ffcdd2;border-color:var(--danger-border);color:#d32f2f;color:var(--danger)}.status-btn.close-btn:hover{background:#ffebee;background:var(--danger-light)}.status-btn.reopen-btn{border-color:#2e7d32;border-color:var(--success);color:#2e7d32;color:var(--success)}.status-btn.reopen-btn:hover{background:#e8f5e9;background:var(--success-light)}.chat-area{flex:1 1;overflow-y:auto;padding:20px 24px}.subject-card{background:#fff;background:var(--bg-surface);border:1px solid #e0e0e0;border:1px solid var(--border);border-radius:10px;color:#1a1a2e;color:var(--text-primary);margin-bottom:16px;padding:16px}.chat-date-divider{color:#999;color:var(--text-tertiary);font-size:12px;margin:20px 0 12px;position:relative;text-align:center}.chat-date-divider span{background:#f8f9fa;background:var(--bg-chat);padding:0 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16px;text-align:center}.message-time{color:#999;color:var(--text-tertiary);font-size:10px;margin-top:4px;text-align:right}.message.support .message-time{color:#ffffffb3}.message-attachment{margin-top:8px}.message-attachment img{border-radius:8px;cursor:pointer;max-height:180px;max-width:240px;transition:opacity .2s}.message-attachment img:hover{opacity:.9}.message-attachment .file-link{align-items:center;background:#0000000d;border-radius:8px;color:inherit;display:flex;font-size:13px;gap:6px;padding:8px 12px;text-decoration:none;transition:background .2s}[data-theme=dark] .message-attachment .file-link{background:#ffffff14}.message-attachment .file-link:hover{background:#0000001a}.message.support .message-attachment .file-link,[data-theme=dark] .message-attachment .file-link:hover{background:#ffffff26}.chat-input-area{background:#fff;background:var(--bg-surface);border-top:1px solid #e0e0e0;border-top:1px solid var(--border);padding:12px 24px 16px}.chat-input-wrapper{align-items:flex-end;background:#f5f5f5;background:var(--bg-input);border:1px solid #e0e0e0;border:1px solid var(--border);border-radius:12px;display:flex;gap:8px;padding:8px 12px;transition:border-color .2s}.chat-input-wrapper:focus-within{background:#fff;background:var(--bg-surface);border-color:#1976d2;border-color:var(--primary)}.chat-input-wrapper textarea{background:#0000;border:none;color:#1a1a2e;color:var(--text-primary);flex:1 1;font-size:14px;line-height:1.4;max-height:120px;min-height:24px;outline:none;padding:4px 0;resize:none}.chat-input-wrapper button{align-items:center;background:none;border:none;border-radius:6px;color:#999;color:var(--text-tertiary);cursor:pointer;display:flex;padding:4px;transition:all .2s}.chat-input-wrapper button:hover{background:#e3f2fd;background:var(--primary-light)}.chat-input-wrapper button.send-btn,.chat-input-wrapper button:hover{color:#1976d2;color:var(--primary)}.chat-input-wrapper button.send-btn:disabled{color:#999;color:var(--text-tertiary);cursor:not-allowed;opacity:.4}.attachment-preview{display:flex;flex-wrap:wrap;gap:8px;padding:8px 12px 0}.attachment-thumb{border:1px solid #e0e0e0;border:1px solid var(--border);border-radius:8px;overflow:hidden;position:relative}.attachment-thumb img{height:60px;object-fit:cover;width:60px}.attachment-thumb .file-name{align-items:center;background:#f5f5f5;background:var(--bg-input);color:#1a1a2e;color:var(--text-primary);display:flex;font-size:12px;gap:4px;max-width:120px;overflow:hidden;padding:6px 10px;text-overflow:ellipsis;white-space:nowrap}.attachment-thumb .remove-btn{background:#00000080;border:none;border-radius:50%;color:#fff;cursor:pointer;font-size:14px;height:20px;position:absolute;right:2px;top:2px;width:20px}.attachment-thumb .remove-btn,.modal-overlay{align-items:center;display:flex;justify-content:center}.modal-overlay{background:#0006;bottom:0;left:0;position:fixed;right:0;top:0;z-index:1000}[data-theme=dark] .modal-overlay{background:#0009}.modal{background:#fff;background:var(--bg-surface);border-radius:16px;box-shadow:0 20px 60px #0000004d;box-shadow:0 20px 60px var(--shadow-modal);max-height:85vh;max-width:90vw;overflow-y:auto;width:560px}.modal-header{align-items:center;border-bottom:1px solid #e0e0e0;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;padding:20px 24px}.modal-header h3{color:#1a1a2e;color:var(--text-primary);font-size:18px;font-weight:600}.modal-header button{background:none;border:none;color:#666;color:var(--text-secondary);cursor:pointer;font-size:20px;padding:4px}.modal-body{padding:24px}.modal-footer{border-top:1px solid #e0e0e0;border-top:1px solid var(--border);display:flex;gap:8px;justify-content:flex-end;padding:16px 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spin{to{transform:rotate(1turn)}}.image-preview-overlay{align-items:center;background:#000000d9;bottom:0;cursor:pointer;display:flex;justify-content:center;left:0;position:fixed;right:0;top:0;z-index:3000}.image-preview-overlay img{border-radius:8px;max-height:90vh;max-width:90vw;object-fit:contain}@media (max-width:768px){.sidebar{min-width:100%;position:absolute;transition:transform .3s;width:100%;z-index:100}.sidebar.hidden{transform:translateX(-100%)}.main-content{width:100%}.mobile-back-btn{display:flex!important}.message{max-width:85%}.case-header{align-items:flex-start;flex-direction:column;gap:8px;padding:12px 16px}.case-header-left .case-info{flex-wrap:wrap;gap:8px}.chat-area{padding:16px 12px}.chat-input-area{padding:8px 12px 12px}}@media (min-width:769px){.mobile-back-btn{display:none!important}}
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