:root{--primary: #4f6ef7;--primary-hover: #3b5de7;--primary-light: #eef1fe;--success: #10b981;--danger: #ef4444;--warning: #f59e0b;--info: #3b82f6;--bg-body: #f5f7fa;--bg-white: #ffffff;--bg-sidebar: #1e293b;--bg-sidebar-active: #334155;--bg-card: #ffffff;--text-primary: #1e293b;--text-secondary: #64748b;--text-sidebar: #94a3b8;--text-sidebar-active: #ffffff;--border: #e2e8f0;--border-light: #f1f5f9;--shadow-sm: 0 1px 2px rgba(0,0,0,.05);--shadow-md: 0 4px 12px rgba(0,0,0,.08);--shadow-lg: 0 10px 30px rgba(0,0,0,.12);--radius: 8px;--radius-lg: 12px;--sidebar-width: 240px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg-body);color:var(--text-primary);line-height:1.6;font-size:14px;-webkit-font-smoothing:antialiased}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2)}.login-card{background:var(--bg-white);border-radius:var(--radius-lg);padding:40px;width:400px;max-width:90vw;box-shadow:var(--shadow-lg)}.login-card h1{text-align:center;margin-bottom:8px;color:var(--text-primary);font-size:24px}.login-card .subtitle{text-align:center;color:var(--text-secondary);margin-bottom:32px;font-size:13px}.login-icon{width:56px;height:56px;background:linear-gradient(135deg,#4776e6,#8e54e9);border-radius:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:28px;color:#fff}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--bg-sidebar);color:var(--text-sidebar);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:transform .3s ease}.sidebar-header{padding:20px;border-bottom:1px solid rgba(255,255,255,.08);display:flex;align-items:center;gap:10px}.sidebar-header .logo{font-size:22px;font-weight:700;color:#fff}.sidebar-header .logo-sub{font-size:11px;color:var(--text-sidebar);line-height:1.2}.sidebar-nav{flex:1;padding:12px 0;overflow-y:auto}.nav-item{display:flex;align-items:center;gap:10px;padding:11px 20px;color:var(--text-sidebar);text-decoration:none;cursor:pointer;transition:all .15s ease;border-left:3px solid transparent;font-size:14px}.nav-item:hover{background:var(--bg-sidebar-active);color:var(--text-sidebar-active)}.nav-item.active{background:var(--bg-sidebar-active);color:var(--text-sidebar-active);border-left-color:var(--primary)}.nav-item .nav-icon{font-size:18px;width:24px;text-align:center}.nav-section-title{padding:16px 20px 8px;font-size:11px;text-transform:uppercase;letter-spacing:1px;color:#94a3b880;font-weight:600}.sidebar-footer{padding:16px 20px;border-top:1px solid rgba(255,255,255,.08)}.user-info{display:flex;align-items:center;gap:10px}.user-avatar{width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600}.user-name{font-size:13px;color:#cbd5e1}.logout-btn{margin-top:10px;width:100%;padding:8px;background:#ef44441a;border:none;border-radius:var(--radius);color:#f87171;cursor:pointer;font-size:13px;transition:background .15s}.logout-btn:hover{background:#ef444433}.main-content{margin-left:var(--sidebar-width);flex:1;min-height:100vh;display:flex;flex-direction:column}.topbar{height:56px;background:var(--bg-white);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:50}.page-title{font-size:18px;font-weight:600;color:var(--text-primary)}.content-area{flex:1;padding:24px}.card{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border-light);overflow:hidden}.card-header{padding:16px 20px;border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.card-header h3{font-size:15px;font-weight:600}.card-body{padding:20px}.form-group{margin-bottom:16px}.form-label{display:block;margin-bottom:6px;font-size:13px;font-weight:500;color:var(--text-secondary)}.form-input,.form-select,.form-textarea{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;color:var(--text-primary);transition:border-color .15s,box-shadow .15s;outline:none;font-family:inherit}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #4f6ef71a}.form-textarea{resize:vertical;min-height:80px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border:none;border-radius:var(--radius);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s ease;white-space:nowrap;font-family:inherit}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-success{background:var(--success);color:#fff}.btn-success:hover:not(:disabled){background:#059669}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover:not(:disabled){background:#dc2626}.btn-warning{background:var(--warning);color:#fff}.btn-warning:hover:not(:disabled){background:#d97706}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text-primary)}.btn-outline:hover:not(:disabled){background:var(--bg-body)}.btn-sm{padding:5px 12px;font-size:12px}.btn-xs{padding:3px 8px;font-size:11px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:13px}th{background:#f8fafc;padding:10px 14px;text-align:left;font-weight:600;color:var(--text-secondary);border-bottom:2px solid var(--border);white-space:nowrap;position:sticky;top:0;z-index:1}td{padding:10px 14px;border-bottom:1px solid var(--border-light);word-break:break-all;max-width:300px;overflow:hidden;text-overflow:ellipsis}tr:hover td{background:#fafbfc}.cell-json{font-family:Fira Code,Consolas,monospace;font-size:12px;color:#374151;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;cursor:pointer}.cell-json:hover{color:var(--primary)}.pagination{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-top:1px solid var(--border-light)}.pagination-info{font-size:13px;color:var(--text-secondary)}.pagination-btns{display:flex;gap:4px}.page-btn{padding:5px 12px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-white);color:var(--text-primary);cursor:pointer;font-size:13px;transition:all .15s}.page-btn:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}.page-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.page-btn:disabled{opacity:.4;cursor:not-allowed}.badge{display:inline-flex;align-items:center;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600}.badge-success{background:#d1fae5;color:#065f46}.badge-danger{background:#fee2e2;color:#991b1b}.badge-warning{background:#fef3c7;color:#92400e}.badge-info{background:#dbeafe;color:#1e40af}.badge-default{background:#f1f5f9;color:#475569}.empty-state{text-align:center;padding:60px 20px;color:var(--text-secondary)}.empty-state .empty-icon{font-size:48px;margin-bottom:12px}.empty-state p{font-size:14px}.toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.search-input{padding:7px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:13px;width:240px;outline:none;transition:border-color .15s}.search-input:focus{border-color:var(--primary)}.db-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}.db-card{background:var(--bg-card);border-radius:var(--radius-lg);border:1px solid var(--border-light);padding:20px;cursor:pointer;transition:all .15s;position:relative}.db-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}.db-card .db-name{font-size:16px;font-weight:700;color:var(--text-primary);margin-bottom:8px;display:flex;align-items:center;gap:8px}.db-card .db-icon{font-size:20px}.db-card .db-meta{display:flex;gap:16px;font-size:12px;color:var(--text-secondary)}.db-card .db-meta span{display:flex;align-items:center;gap:4px}.collection-list{list-style:none;padding:0;margin-top:12px}.collection-list li{padding:8px 0;border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between;font-size:13px}.collection-list li:last-child{border-bottom:none}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;z-index:1000;display:flex;align-items:center;justify-content:center;animation:fadeIn .15s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-box{background:var(--bg-white);border-radius:var(--radius-lg);width:600px;max-width:95vw;max-height:85vh;overflow-y:auto;box-shadow:var(--shadow-lg);animation:slideUp .2s ease}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-header{padding:18px 24px;border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between}.modal-header h3{font-size:16px;font-weight:600}.modal-close{width:30px;height:30px;border:none;background:none;border-radius:50%;cursor:pointer;font-size:18px;color:var(--text-secondary);display:flex;align-items:center;justify-content:center}.modal-close:hover{background:var(--bg-body)}.modal-body{padding:24px}.modal-footer{padding:14px 24px;border-top:1px solid var(--border-light);display:flex;justify-content:flex-end;gap:10px}.toast-container{position:fixed;top:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:8px}.toast{padding:12px 20px;border-radius:var(--radius);color:#fff;font-size:13px;box-shadow:var(--shadow-md);animation:slideInRight .25s ease;display:flex;align-items:center;gap:8px;min-width:250px}@keyframes slideInRight{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.toast-success{background:var(--success)}.toast-error{background:var(--danger)}.toast-warning{background:var(--warning);color:#fff}.toast-info{background:var(--info)}.action-btns{display:flex;gap:4px}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:30px;text-align:center;cursor:pointer;transition:all .15s}.upload-zone:hover{border-color:var(--primary);background:var(--primary-light)}.backup-file-row{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--border-light)}.backup-file-row:last-child{border-bottom:none}.backup-file-info{flex:1}.backup-file-info .filename{font-weight:500;font-size:13px}.backup-file-info .filemeta{font-size:12px;color:var(--text-secondary);margin-top:2px}.log-action-badge{font-size:11px;font-weight:600;padding:2px 8px;border-radius:4px}.log-action-insert{background:#d1fae5;color:#065f46}.log-action-update{background:#dbeafe;color:#1e40af}.log-action-delete,.log-action-delete_batch{background:#fee2e2;color:#991b1b}.log-action-export,.log-action-import{background:#fef3c7;color:#92400e}.log-action-backup,.log-action-restore{background:#ede9fe;color:#5b21b6}.log-action-login,.log-action-logout{background:#f1f5f9;color:#475569}.log-action-create_collection,.log-action-drop_collection{background:#fce7f3;color:#9d174d}.log-action-update_password,.log-action-delete_backup{background:#f1f5f9;color:#475569}.skeleton{background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0,#f0f0f0 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:4px}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media (max-width: 768px){:root{--sidebar-width: 0px}.main-content{margin-left:0}.content-area{padding:16px}.db-grid{grid-template-columns:1fr}.modal-box{width:98vw}}