:root{--primary:#6366f1;--primary-dark:#4f46e5;--primary-light:#6366f114;--primary-gradient:linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--primary-gradient-hover:linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);--bg:#f8fafc;--bg-hover:#f1f5f9;--bg-elevated:#fff;--card:#fff;--card-hover:#fafbfc;--text:#0f172a;--text-light:#64748b;--text-lighter:#94a3b8;--border:#e2e8f0;--border-light:#f1f5f9;--success:#10b981;--success-bg:#10b9811a;--success-text:#059669;--warning:#f59e0b;--warning-bg:#f59e0b1a;--warning-text:#d97706;--danger:#ef4444;--danger-bg:#ef44441a;--danger-text:#dc2626;--info:#06b6d4;--info-bg:#06b6d41a;--info-text:#0891b2;--shadow-xs:0 1px 2px #0f172a0a;--shadow-sm:0 1px 3px #0f172a0d, 0 1px 2px #0f172a08;--shadow-md:0 4px 6px -1px #0f172a12, 0 2px 4px -2px #0f172a0d;--shadow-lg:0 10px 15px -3px #0f172a14, 0 4px 6px -4px #0f172a0d;--shadow-xl:0 20px 25px -5px #0f172a1a, 0 8px 10px -6px #0f172a0d;--shadow-primary:0 4px 14px 0 #6366f140;--radius-xs:4px;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-2xl:20px;--radius-full:9999px;--transition:all .2s cubic-bezier(.4, 0, .2, 1);--transition-fast:all .15s cubic-bezier(.4, 0, .2, 1);--transition-slow:all .3s cubic-bezier(.4, 0, .2, 1);--header-h:60px;--max-width:1280px;--z-dropdown:100;--z-modal:1000;--z-toast:9999;--z-overlay:2000}[data-theme=dark]{--primary:#818cf8;--primary-dark:#6366f1;--primary-light:#818cf81f;--primary-gradient:linear-gradient(135deg, #818cf8 0%, #a78bfa 100%);--primary-gradient-hover:linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--bg:#0b1120;--bg-hover:#1e293b;--bg-elevated:#1e293b;--card:#1e293b;--card-hover:#334155;--text:#f1f5f9;--text-light:#94a3b8;--text-lighter:#64748b;--border:#334155;--border-light:#1e293b;--success:#34d399;--success-bg:#34d39926;--success-text:#34d399;--warning:#fbbf24;--warning-bg:#fbbf2426;--warning-text:#fbbf24;--danger:#f87171;--danger-bg:#f8714926;--danger-text:#f87171;--info:#22d3ee;--info-bg:#22d3ee26;--info-text:#22d3ee;--shadow-xs:0 1px 2px #0003;--shadow-sm:0 1px 3px #0000004d, 0 1px 2px #0003;--shadow-md:0 4px 6px -1px #0006, 0 2px 4px -2px #0000004d;--shadow-lg:0 10px 15px -3px #00000080, 0 4px 6px -4px #0000004d;--shadow-xl:0 20px 25px -5px #0009, 0 8px 10px -6px #0006;--shadow-primary:0 4px 14px 0 #818cf84d}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;letter-spacing:-.01em;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-size:14px;line-height:1.6}:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.skip-link{background:var(--primary);color:#fff;z-index:var(--z-toast);border-radius:0 0 var(--radius-md) 0;padding:8px 16px;position:absolute;top:-40px;left:0}.skip-link:focus{top:0}button{cursor:pointer;border-radius:var(--radius-md);transition:var(--transition);border:none;align-items:center;gap:6px;padding:8px 16px;font-family:inherit;font-size:14px;font-weight:500;display:inline-flex}button:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary-gradient);color:#fff;box-shadow:var(--shadow-primary)}.btn-primary:hover:not(:disabled){background:var(--primary-gradient-hover);transform:translateY(-1px);box-shadow:0 6px 20px #6366f159}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--card);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--bg-hover);border-color:var(--primary);color:var(--primary);transform:translateY(-1px);box-shadow:0 2px 8px #0000000f}.btn-secondary:active:not(:disabled){transform:translateY(0)}.btn-danger{color:#fff;background:linear-gradient(135deg,#ef4444 0%,#dc2626 100%);box-shadow:0 4px 14px #ef444440}.btn-danger:hover:not(:disabled){background:linear-gradient(135deg,#dc2626 0%,#b91c1c 100%);transform:translateY(-1px);box-shadow:0 6px 20px #ef444459}.btn-ghost{color:var(--text-light);background:0 0}.btn-ghost:hover:not(:disabled){background:var(--bg-hover);color:var(--text)}.btn-lg{border-radius:var(--radius-lg);padding:12px 24px;font-size:16px}.btn-block{justify-content:center;width:100%}input,select,textarea{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--card);width:100%;color:var(--text);transition:var(--transition-fast);outline:none;padding:10px 14px;font-family:inherit;font-size:14px}input:hover,select:hover,textarea:hover{border-color:var(--text-lighter)}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-light), 0 1px 3px #6366f11a}input::placeholder{color:var(--text-lighter)}select{appearance:none;cursor:pointer;background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-position:right 12px center;background-repeat:no-repeat;background-size:16px;padding-right:36px}input[type=checkbox]{width:16px;height:16px;accent-color:var(--primary);cursor:pointer;vertical-align:middle}.form-label{color:var(--text);letter-spacing:-.01em;margin-bottom:6px;font-size:13px;font-weight:600;display:block}.form-hint{color:var(--text-lighter);margin-top:4px;font-size:12px}.card{background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:var(--transition);margin-bottom:16px;padding:20px}.card h2{border-left:3px solid var(--primary);margin-bottom:14px;padding-left:10px;font-size:16px}.badge{border-radius:12px;align-items:center;gap:4px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-flex}table{border-collapse:collapse;width:100%}th{text-align:left;background:var(--bg-hover);border-bottom:2px solid var(--border);color:var(--text-light);white-space:nowrap;-webkit-user-select:none;user-select:none;padding:10px 8px;font-size:13px;font-weight:600}th.sortable{cursor:pointer}th.sortable:hover{color:var(--primary)}th.sortable:after{content:"⇅";opacity:.3;margin-left:4px;font-size:11px}th.sort-asc:after{content:"↑";opacity:1;color:var(--primary)}th.sort-desc:after{content:"↓";opacity:1;color:var(--primary)}td{border-bottom:1px solid var(--border-light);padding:10px 8px}tr:hover td{background:var(--bg-hover)}tbody tr:nth-child(2n) td{background:var(--card-hover)}[data-theme=dark] tbody tr:nth-child(2n) td{background:#ffffff05}.row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.row>*{flex:1;min-width:0}.row>button,.row>.btn-fixed{flex:none}.text-light{color:var(--text-light);font-size:13px}.text-center{text-align:center}.text-right{text-align:right}.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mb-8{margin-bottom:8px}.mb-16{margin-bottom:16px}.gap-8{gap:8px}.gap-16{gap:16px}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.flex-wrap{flex-wrap:wrap}.flex-1{flex:1}.flex-shrink-0{flex-shrink:0}.toast{border-radius:var(--radius-md);color:#fff;box-shadow:var(--shadow-lg);align-items:center;gap:8px;min-width:200px;max-width:400px;padding:12px 20px;animation:.3s slideIn;display:flex}@keyframes slideIn{0%{opacity:0;transform:translate(120%)}to{opacity:1;transform:translate(0)}}@keyframes slideOut{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(120%)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes dropIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.loading{text-align:center;color:var(--text-light);flex-direction:column;align-items:center;gap:12px;padding:48px 20px;font-size:13px;font-weight:500;display:flex}.loading:before{content:"";border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:28px;height:28px;animation:.7s linear infinite spin}.spinner{border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:16px;height:16px;animation:.6s linear infinite spin;display:inline-block}.spinner-lg{border-width:3px;width:32px;height:32px}.content>div{animation:.3s cubic-bezier(.4,0,.2,1) fadeInUp}.skeleton{background:linear-gradient(90deg, var(--bg-hover) 25%, var(--border) 50%, var(--bg-hover) 75%);border-radius:var(--radius-sm);background-size:200% 100%;animation:1.5s infinite shimmer}.skeleton-text{height:14px;margin-bottom:8px}.skeleton-text:last-child{width:60%}.skeleton-row td{padding:10px 8px}.empty-state{text-align:center;padding:60px 20px!important}.empty-icon{color:var(--text-lighter);opacity:.4;justify-content:center;margin-bottom:12px;display:flex}.empty-text{color:var(--text-light);margin-bottom:16px;font-size:14px}.empty-actions{justify-content:center;gap:8px;display:flex}.search-box .search-icon{color:var(--text-light);pointer-events:none;position:absolute;top:50%;left:10px;transform:translateY(-50%)}.breadcrumb{color:var(--text-light);border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:2px;margin-bottom:8px;padding:8px 0;font-size:13px;display:flex}.breadcrumb-item{border-radius:var(--radius-sm);color:var(--text-light);transition:var(--transition-fast);align-items:center;gap:4px;padding:4px 8px;display:inline-flex}.breadcrumb-item:hover{background:var(--bg-hover);color:var(--primary);text-decoration:none}.breadcrumb-item.active{color:var(--text);pointer-events:none;font-weight:600}.breadcrumb-sep{color:var(--text-lighter);opacity:.5;margin:0 2px}.batch-bar span{margin-right:auto;font-weight:500}.table-wrapper{border-radius:var(--radius-md);overflow-x:auto}.file-icon{color:var(--text-light);flex-shrink:0;display:inline-flex}.file-name-link{color:var(--text);cursor:pointer;font-weight:500}.file-name-link:hover{color:var(--primary);text-decoration:none}.file-thumb{object-fit:cover;border-radius:var(--radius-sm);border:1px solid var(--border);flex-shrink:0;width:32px;height:32px}.highlight{background:var(--warning-bg);color:var(--warning-text);border-radius:2px;padding:0 2px}.icon-btn{width:28px;height:28px;color:var(--text-light);border-radius:var(--radius-sm);background:0 0;justify-content:center;align-items:center;padding:0;display:inline-flex}.icon-btn:hover:not(:disabled){background:var(--bg-hover);color:var(--text)}.action-menu{display:inline-block;position:relative}.dropdown-menu{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);min-width:160px;z-index:var(--z-dropdown);margin-top:4px;padding:4px;animation:.15s dropIn;position:absolute;top:100%;right:0}.dropdown-item{border-radius:var(--radius-sm);width:100%;color:var(--text);text-align:left;cursor:pointer;transition:var(--transition-fast);background:0 0;border:none;align-items:center;gap:8px;padding:8px 10px;font-size:13px;display:flex}.dropdown-item:hover{background:var(--bg-hover);color:var(--primary);text-decoration:none}.dropdown-item.dropdown-danger:hover{background:var(--danger-bg);color:var(--danger)}.dropdown-menu-portal{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-xl);z-index:9999;width:168px;padding:4px;animation:.15s dropIn;position:absolute}.pagination{color:var(--text-light);flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;padding:12px 8px 0;font-size:13px;display:flex}.pagination-info{margin-right:auto}.pagination-page{color:var(--text);text-align:center;min-width:60px;font-weight:500}.pagination-input{text-align:center;width:50px;padding:4px}.page-size-select{width:auto;padding:4px 8px;font-size:12px}.card.drag-over{border:2px dashed var(--primary);background:var(--primary-light)}.drag-overlay{background:var(--primary-light);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:var(--z-overlay);color:var(--primary);pointer-events:none;flex-direction:column;justify-content:center;align-items:center;gap:16px;font-size:18px;font-weight:500;display:flex;position:fixed;inset:0}.modal-bg{z-index:var(--z-modal);background:#00000080;justify-content:center;align-items:center;padding:20px;animation:.2s fadeIn;display:flex;position:fixed;inset:0}.modal{background:var(--card);border-radius:var(--radius-lg);width:100%;max-width:560px;max-height:85vh;box-shadow:var(--shadow-lg);padding:24px;animation:.2s scaleIn;overflow-y:auto}.modal-xl{max-width:95vw;max-height:95vh}.modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;margin-bottom:16px;padding-bottom:12px;display:flex}.modal-header h3{align-items:center;gap:8px;margin:0;font-size:16px;display:flex}.modal-body{font-size:14px}.modal-body p{margin-bottom:8px;font-size:13px}.modal-body p strong{min-width:70px;color:var(--text-light);display:inline-block}.modal-footer{border-top:1px solid var(--border);justify-content:flex-end;gap:8px;margin-top:16px;padding-top:12px;display:flex}.tag{background:var(--info-bg);color:var(--info-text);border-radius:10px;margin:2px;padding:2px 8px;font-size:11px;display:inline-block}.tag-removable{cursor:default;align-items:center;gap:4px;display:inline-flex}.tag-removable button{color:inherit;opacity:.6;background:0 0;border:none;padding:0;font-size:14px;line-height:1}.tag-removable button:hover{opacity:1}.detail-tags{margin-bottom:8px}.detail-tags strong{color:var(--text-light);margin-bottom:4px;font-size:13px;display:block}.summary-box{background:var(--warning-bg);border-radius:var(--radius-md);border-left:3px solid var(--warning);color:var(--text);margin-top:8px;padding:10px;font-size:13px}.chat-msg.user{background:var(--primary);color:#fff;margin-left:auto}.chat-msg.ai{background:var(--card);border:1px solid var(--border)}.chat-msg.ai pre{background:var(--bg-hover);border-radius:var(--radius-sm);margin:8px 0;padding:8px;font-size:12px;overflow-x:auto}.chat-msg.ai code{background:var(--bg-hover);border-radius:3px;padding:1px 4px;font-size:12px}.chat-msg.ai pre code{background:0 0;padding:0}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.upload-list{width:360px;max-height:400px;z-index:var(--z-toast);flex-direction:column;gap:8px;display:flex;position:fixed;bottom:20px;right:20px;overflow-y:auto}.upload-item{background:var(--card);border-radius:var(--radius-md);box-shadow:var(--shadow-md);padding:12px;animation:.3s slideIn}.upload-item-header{justify-content:space-between;align-items:center;margin-bottom:8px;font-size:13px;display:flex}.upload-item-name{text-overflow:ellipsis;white-space:nowrap;max-width:260px;font-weight:500;overflow:hidden}.notification-bell{cursor:pointer;position:relative}.notification-badge{background:var(--danger);color:#fff;border-radius:8px;justify-content:center;align-items:center;min-width:16px;height:16px;padding:0 4px;font-size:10px;font-weight:600;display:flex;position:absolute;top:-4px;right:-4px}.notification-dropdown{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-md);width:360px;max-height:400px;box-shadow:var(--shadow-lg);z-index:var(--z-dropdown);margin-top:8px;animation:.15s dropIn;position:absolute;top:100%;right:0;overflow-y:auto}.notification-item{border-bottom:1px solid var(--border-light);cursor:pointer;transition:var(--transition-fast);padding:12px;font-size:13px}.notification-item:last-child{border-bottom:none}.stat-card{background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:var(--transition);align-items:center;gap:16px;padding:20px;display:flex}.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.stat-icon{border-radius:var(--radius-md);flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;display:flex}.stat-icon.blue{background:var(--primary-light);color:var(--primary)}.stat-icon.green{background:var(--success-bg);color:var(--success)}.stat-icon.orange{background:var(--warning-bg);color:var(--warning)}.stat-icon.red{background:var(--danger-bg);color:var(--danger)}.stat-value{color:var(--text);font-size:24px;font-weight:700}.stat-label{color:var(--text-light);font-size:12px}.view-toggle{border:1px solid var(--border);border-radius:var(--radius-md);display:inline-flex;overflow:hidden}.view-toggle button{color:var(--text-light);background:0 0;border-radius:0;padding:6px 10px}.view-toggle button.active{background:var(--primary);color:#fff}.file-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px;padding:8px 0;display:grid}.file-grid-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-md);text-align:center;cursor:pointer;transition:var(--transition);padding:12px;position:relative}.file-grid-item:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}.file-grid-item.selected{border-color:var(--primary);background:var(--primary-light)}.file-grid-thumb{width:80px;height:80px;color:var(--text-light);justify-content:center;align-items:center;margin:0 auto 8px;display:flex}.file-grid-thumb img{object-fit:cover;border-radius:var(--radius-sm);width:100%;height:100%}.file-grid-name{text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:500;overflow:hidden}.file-grid-meta{color:var(--text-light);margin-top:4px;font-size:11px}.file-grid-checkbox{position:absolute;top:8px;left:8px}.preview-container{background:var(--bg);border-radius:var(--radius-md);justify-content:center;align-items:center;min-height:300px;max-height:70vh;padding:16px;display:flex;overflow:auto}.preview-container img{object-fit:contain;border-radius:var(--radius-sm);max-width:100%;max-height:60vh}.preview-container video{max-width:100%;max-height:60vh}.preview-container iframe{border-radius:var(--radius-sm);border:none;width:100%;height:60vh}.preview-container pre{background:var(--card);border-radius:var(--radius-sm);white-space:pre-wrap;word-break:break-word;width:100%;max-height:60vh;padding:12px;font-size:13px;line-height:1.6;overflow:auto}@media (width<=768px){.stats-grid{grid-template-columns:1fr 1fr}.file-grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr))}.modal{padding:16px}.upload-list,.notification-dropdown{width:calc(100vw - 40px)}.row{flex-direction:column;align-items:stretch}.row>*{width:100%}.row>button,.row>.btn-fixed{width:auto}.pagination{justify-content:center}.hide-mobile{display:none!important}}@media (width<=480px){.stats-grid{grid-template-columns:1fr}.file-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr))}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-lighter)}.cursor-pointer{cursor:pointer}.user-select-none{-webkit-user-select:none;user-select:none}.overflow-hidden{overflow:hidden}.text-ellipsis{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.position-relative{position:relative}.position-absolute{position:absolute}.app-layout{background:var(--bg);min-height:100vh;display:flex}.sidebar{color:#fff;background:linear-gradient(#4f46e5 0%,#6366f1 50%,#7c3aed 100%);flex-direction:column;flex-shrink:0;width:248px;height:100vh;transition:width .25s cubic-bezier(.4,0,.2,1);display:flex;position:sticky;top:0;overflow-y:auto;box-shadow:6px 0 32px #4f46e538}.sidebar.collapsed{width:72px}.sidebar-header{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid #ffffff1a;justify-content:space-between;align-items:center;gap:8px;padding:18px 16px;display:flex}.sidebar.collapsed .sidebar-header{justify-content:center;padding:18px 0}.sidebar-header .logo{letter-spacing:-.02em;align-items:center;gap:10px;font-size:15px;font-weight:700;display:flex}.sidebar-toggle-inner{border-radius:var(--radius-sm);color:#ffffffd9;cursor:pointer;width:28px;height:28px;transition:var(--transition-fast);background:#ffffff1f;border:1px solid #ffffff40;flex-shrink:0;justify-content:center;align-items:center;display:flex}.sidebar-toggle-inner:hover{color:#fff;background:#ffffff40;border-color:#fff6;transform:scale(1.05)}.sidebar-toggle-inner:active{transform:scale(.95)}.sidebar-toggle-inner svg{transition:transform .25s cubic-bezier(.4,0,.2,1)}.sidebar-toggle-inner.collapsed svg{transform:rotate(90deg)}.sidebar-nav{flex-direction:column;flex:1;gap:3px;padding:12px 10px;display:flex}.sidebar-item{border-radius:var(--radius-md);color:#ffffffc7;transition:var(--transition-fast);align-items:center;gap:12px;padding:11px 14px;font-size:14px;font-weight:500;text-decoration:none;display:flex;position:relative}.sidebar-item:hover{color:#fff;background:#ffffff1a;transform:translate(2px)}.sidebar-item.active{color:#fff;background:#ffffff2e;font-weight:600;box-shadow:0 2px 8px #0000001a}.sidebar-item.active:before{content:"";background:#fff;border-radius:0 4px 4px 0;width:4px;height:24px;position:absolute;top:50%;left:-10px;transform:translateY(-50%)}.sidebar.collapsed .sidebar-item{justify-content:center;padding:12px}.sidebar.collapsed .sidebar-item.active:before{display:none}.sidebar-footer{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-top:1px solid #ffffff1a;padding:14px 16px}.ai-status{color:#ffffffd9;align-items:center;gap:8px;font-size:12px;display:flex}.status-dot{border-radius:50%;flex-shrink:0;width:8px;height:8px}.status-dot.online{background:#4ade80;box-shadow:0 0 8px #4ade80,0 0 4px #4ade80}.status-dot.offline{background:#f87171}.main-area{flex-direction:column;flex:1;min-width:0;display:flex}.topbar{-webkit-backdrop-filter:blur(20px)saturate(180%);z-index:100;min-height:var(--header-h);background:#ffffffa6;border-bottom:none;justify-content:space-between;align-items:center;padding:14px 28px;display:flex;position:sticky;top:0;box-shadow:0 1px 3px #0000000a,0 1px 2px #00000005}[data-theme=dark] .topbar{background:#1e293ba6;box-shadow:0 1px 3px #0003,0 1px 2px #0000001a}.page-title{letter-spacing:-.02em;margin:0;font-size:17px;font-weight:700}.topbar-left{align-items:center;gap:12px;display:flex}.topbar-right{align-items:center;gap:8px;display:flex}.notification-bell{position:relative}.notification-badge{color:#fff;border-radius:var(--radius-full);text-align:center;background:linear-gradient(135deg,#ef4444 0%,#dc2626 100%);min-width:16px;padding:2px 5px;font-size:10px;font-weight:600;position:absolute;top:-4px;right:-4px;box-shadow:0 2px 8px #ef444466}.notification-dropdown{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);width:360px;max-height:480px;box-shadow:var(--shadow-xl);z-index:200;flex-direction:column;margin-top:8px;animation:.2s cubic-bezier(.4,0,.2,1) dropIn;display:flex;position:absolute;top:100%;right:0;overflow:hidden}.notification-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:14px 16px;font-weight:600;display:flex}.notification-list{flex:1;overflow-y:auto}.notification-empty{text-align:center;color:var(--text-light);padding:40px 16px;font-size:13px}.notification-item{border-bottom:1px solid var(--border-light);cursor:pointer;transition:var(--transition-fast);padding:12px 16px}.notification-item:hover{background:var(--bg-hover)}.notification-item.unread{background:var(--primary-light)}.user-menu{position:relative}.user-trigger{cursor:pointer;border-radius:var(--radius-full);color:var(--text);transition:var(--transition-fast);background:0 0;border:none;align-items:center;gap:8px;padding:4px 10px 4px 4px;display:flex}.user-trigger:hover{background:var(--bg-hover)}.user-avatar{background:var(--primary-gradient);color:#fff;width:34px;height:34px;box-shadow:var(--shadow-primary);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:13px;font-weight:600;display:flex}.user-avatar.lg{width:44px;height:44px;font-size:17px}.user-avatar.xl{width:64px;height:64px;font-size:24px}.user-name{font-size:13px;font-weight:600}.dropdown-menu{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);min-width:220px;box-shadow:var(--shadow-xl);z-index:200;margin-top:8px;padding:6px;animation:.2s cubic-bezier(.4,0,.2,1) dropIn;position:absolute;top:100%;right:0}.user-dropdown{min-width:260px}.dropdown-user-info{align-items:center;gap:12px;padding:12px;display:flex}.dropdown-divider{background:var(--border);height:1px;margin:6px 0}.dropdown-item{width:100%;color:var(--text);text-align:left;border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-fast);background:0 0;border:none;align-items:center;gap:10px;padding:9px 12px;font-size:13px;font-weight:500;text-decoration:none;display:flex}.dropdown-item:hover{background:var(--bg-hover);color:var(--primary)}.dropdown-danger{color:var(--danger)}.dropdown-danger:hover{background:var(--danger-bg);color:var(--danger)}.modal-bg{-webkit-backdrop-filter:blur(4px);z-index:1000;background:#0f172a99;justify-content:center;align-items:center;padding:16px;animation:.2s fadeIn;display:flex;position:fixed;inset:0}.modal{background:var(--card);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);border:1px solid var(--border);flex-direction:column;width:100%;max-height:90vh;animation:.25s cubic-bezier(.4,0,.2,1) slideUp;display:flex}.modal-sm{max-width:400px}.modal-md{max-width:560px}.modal-lg{max-width:800px}.modal-xl{max-width:1100px}.modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:18px 24px;display:flex}.modal-header h3{letter-spacing:-.02em;margin:0;font-size:17px;font-weight:700}.modal-body{flex:1;padding:24px;overflow-y:auto}.modal-footer{border-top:1px solid var(--border);justify-content:flex-end;gap:8px;padding:14px 24px;display:flex}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)scale(.98)}to{opacity:1;transform:translateY(0)scale(1)}}.empty-state{text-align:center;color:var(--text-light);flex-direction:column;justify-content:center;align-items:center;padding:64px 16px;display:flex}.empty-icon{border-radius:var(--radius-2xl);background:linear-gradient(135deg, var(--primary-light), #8b5cf614);width:80px;height:80px;color:var(--primary);opacity:1;justify-content:center;align-items:center;margin-bottom:18px;display:flex;box-shadow:0 8px 20px -8px #6366f14d}.empty-state .empty-icon svg{opacity:.5}.empty-text{color:var(--text);margin-bottom:6px;font-size:15px;font-weight:600}.empty-actions{flex-wrap:wrap;justify-content:center;gap:8px;margin-top:18px;display:flex}.pagination{justify-content:flex-end;align-items:center;gap:12px;padding:14px 0;font-size:13px;display:flex}.pagination-info{color:var(--text-light)}.pagination-page{text-align:center;min-width:60px;font-weight:600}.btn-sm{border-radius:var(--radius-sm);padding:5px 12px;font-size:12px}.btn-ghost{color:var(--text-light);border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition-fast);background:0 0;border:none;padding:6px 10px;font-size:13px}.btn-ghost:hover{background:var(--bg-hover);color:var(--text)}.btn-danger{color:#fff;border-radius:var(--radius-md);cursor:pointer;transition:var(--transition);background:linear-gradient(135deg,#ef4444 0%,#dc2626 100%);border:none;align-items:center;gap:6px;padding:8px 16px;font-size:13px;font-weight:500;display:inline-flex;box-shadow:0 4px 14px #ef444440}.btn-danger:hover{transform:translateY(-1px);box-shadow:0 6px 20px #ef444459}.btn-danger:disabled{opacity:.5;cursor:not-allowed}.icon-btn{border-radius:var(--radius-sm);cursor:pointer;color:var(--text-light);transition:var(--transition-fast);background:0 0;border:none;justify-content:center;align-items:center;padding:7px;display:inline-flex}.icon-btn:hover{background:var(--bg-hover);color:var(--text);transform:scale(1.05)}.form-group{margin-bottom:16px}.form-label{color:var(--text);margin-bottom:6px;font-size:13px;font-weight:600;display:block}.checkbox-item{cursor:pointer;align-items:center;gap:8px;font-size:13px;display:flex}.files-header{margin-bottom:16px}.row{flex-wrap:wrap;align-items:center;display:flex}.search-box{flex:1;min-width:200px;position:relative}.files-header select,.files-header .btn-secondary{box-sizing:border-box;height:40px}.search-icon{color:var(--text-lighter);pointer-events:none;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.search-box input{padding-left:36px}.breadcrumb{flex-wrap:wrap;align-items:center;gap:4px;margin-bottom:12px;font-size:13px;display:flex}.breadcrumb-segment{align-items:center;display:inline-flex}.breadcrumb-sep{color:var(--text-lighter);margin:0 4px}.breadcrumb-item{color:var(--text-light);border-radius:var(--radius-sm);transition:var(--transition-fast);align-items:center;gap:4px;padding:4px 8px;text-decoration:none;display:inline-flex}.breadcrumb-item:hover{color:var(--primary);background:var(--bg-hover)}.breadcrumb-item.active{color:var(--text);font-weight:600}.batch-bar{background:var(--primary-light);border-left:3px solid var(--primary);border-radius:var(--radius-md);align-items:center;gap:8px;margin-bottom:12px;padding:10px 14px;font-size:13px;animation:.2s fadeIn;display:flex}.table-wrapper{border-radius:var(--radius-lg);border:1px solid var(--border);background:var(--card);overflow:hidden}table{border-collapse:collapse;width:100%;font-size:13px}th{text-align:left;color:var(--text-light);border-bottom:1px solid var(--border);background:var(--bg-hover);white-space:nowrap;text-transform:uppercase;letter-spacing:.06em;padding:14px 16px;font-size:11px;font-weight:600}td{border-bottom:1px solid var(--border-light);vertical-align:middle;padding:15px 16px}tbody tr:last-child td{border-bottom:none}tbody tr{transition:var(--transition-fast)}tbody tr:hover td{background:var(--bg-hover)}tbody tr:hover .file-icon{color:var(--primary)}tr.row-selected td{background:var(--primary-light)!important}tr.row-disabled td{opacity:.5}.text-light{color:var(--text-light)}.file-name-cell{align-items:center;gap:10px;display:flex}.file-icon{color:var(--text-light);transition:var(--transition-fast);flex-shrink:0}.file-thumb{object-fit:cover;border-radius:var(--radius-sm);border:1px solid var(--border);width:36px;height:36px}.file-name-link{color:var(--text);transition:var(--transition-fast);font-weight:600;text-decoration:none}.file-name-link:hover{color:var(--primary)}.action-menu{position:relative}.action-menu .icon-btn{opacity:.45;transition:var(--transition-fast)}tbody tr:hover .action-menu .icon-btn,.action-menu .icon-btn:hover{opacity:1}.badge{border-radius:var(--radius-full);letter-spacing:.01em;align-items:center;gap:4px;padding:3px 9px;font-size:11px;font-weight:600;display:inline-flex}.badge-success{background:var(--success-bg);color:var(--success-text)}.badge-info{background:var(--info-bg);color:var(--info-text)}.badge-warning{background:var(--warning-bg);color:var(--warning-text)}.badge-danger{background:var(--danger-bg);color:var(--danger-text)}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:var(--transition);margin-bottom:16px;padding:24px}.card:hover{box-shadow:var(--shadow-md)}.card h2{letter-spacing:-.01em;align-items:center;gap:8px;margin:0 0 16px;font-size:16px;font-weight:700;display:flex}.card-header{justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px;display:flex}.card-header-title{flex-direction:column;gap:2px;display:flex}.card-header-title h2{letter-spacing:-.01em;align-items:center;gap:8px;margin:0;font-size:16px;font-weight:700;display:flex}.card-header-desc{color:var(--text-light);font-size:12px;font-weight:500}.card-header-actions{align-items:center;gap:8px;display:flex}.page-header{border-bottom:1px solid var(--border-light);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:22px;padding-bottom:18px;display:flex;position:relative}.page-header>div:first-child{align-items:center;gap:11px;min-width:0;display:flex}.page-header-title-wrap{flex-direction:column;gap:4px;min-width:0;display:flex}.page-header-accent{border-radius:var(--radius-full);background:var(--primary-gradient);flex-shrink:0;width:4px;height:38px;box-shadow:0 4px 12px #6366f159}.page-header-title{letter-spacing:-.02em;color:var(--text);font-size:20px;font-weight:700;line-height:1.2}.page-header-desc{color:var(--text-muted,var(--text-light));letter-spacing:.01em;align-items:center;gap:5px;font-size:13.5px;font-weight:500;display:flex}.page-header-desc svg{opacity:.6;flex-shrink:0}.page-header-card{border-radius:var(--radius-lg);background:linear-gradient(135deg,#6366f10f 0%,#8b5cf60a 100%);border:1px solid #6366f11f;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:20px;padding:20px 24px;display:flex;position:relative;overflow:hidden;box-shadow:0 1px 3px #6366f10f}.page-header-card:before{content:"";background:var(--primary-gradient);opacity:.8;height:3px;position:absolute;top:0;left:0;right:0}.page-header-card-left{align-items:center;gap:14px;min-width:0;display:flex}.page-header-card .page-header-accent{width:5px;height:44px}.page-header-card .page-header-title{font-size:22px;font-weight:800}.page-header-card-actions{flex-shrink:0;gap:8px;display:flex}[data-theme=dark] .page-header-card{background:linear-gradient(135deg,#6366f11f 0%,#8b5cf614 100%);border-color:#6366f133}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin-bottom:16px;display:grid}.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:var(--transition);align-items:center;gap:14px;padding:20px;display:flex;position:relative;overflow:hidden}.stat-card:before{content:"";background:var(--primary-gradient);opacity:0;height:3px;transition:var(--transition);position:absolute;top:0;left:0;right:0}.stat-card:hover{box-shadow:var(--shadow-lg);border-color:#0000;transform:translateY(-3px)}.stat-card:hover:before{opacity:1}.stat-icon{border-radius:var(--radius-md);flex-shrink:0;justify-content:center;align-items:center;width:52px;height:52px;display:flex;position:relative}.stat-icon.blue{color:var(--primary);background:linear-gradient(135deg,#6366f126,#8b5cf633)}.stat-icon.green{color:var(--success);background:linear-gradient(135deg,#10b98126,#22c55e33)}.stat-icon.orange{color:var(--warning);background:linear-gradient(135deg,#f59e0b26,#f9731633)}.stat-icon.red{color:var(--danger);background:linear-gradient(135deg,#ef444426,#f43f5e33)}.stat-value{letter-spacing:-.025em;font-size:24px;font-weight:700;line-height:1.2}.stat-label{color:var(--text-light);margin-top:2px;font-size:12px;font-weight:500}.dashboard-grid{grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px;display:grid}.chart-bars{align-items:flex-end;gap:10px;height:200px;padding:16px 0;display:flex}.chart-bar-item{flex-direction:column;flex:1;justify-content:flex-end;align-items:center;height:100%;display:flex}.chart-bar-value{color:var(--text-light);margin-bottom:4px;font-size:11px;font-weight:600}.chart-bar{background:var(--primary-gradient);border-radius:var(--radius-sm) var(--radius-sm) 0 0;width:100%;max-width:44px;min-height:4px;transition:var(--transition);transform-origin:bottom;animation:.5s cubic-bezier(.4,0,.2,1) barGrow;box-shadow:0 2px 8px #6366f133}.chart-bar:hover{opacity:.85;transform:translateY(-2px)scaleY(1.02)}.chart-bar-label{color:var(--text-lighter);margin-top:4px;font-size:11px}@keyframes barGrow{0%{transform:scaleY(0)}to{transform:scaleY(1)}}.progress-section{margin-top:8px}.progress-info{color:var(--text-light);justify-content:space-between;margin-bottom:6px;font-size:12px;font-weight:500;display:flex}.progress-bar{background:var(--bg-hover);border-radius:var(--radius-full);height:10px;overflow:hidden;box-shadow:inset 0 1px 2px #0f172a0a}.progress-fill{background:var(--primary-gradient);border-radius:var(--radius-full);height:100%;transition:width .6s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;box-shadow:0 2px 8px #6366f14d}.progress-fill:after{content:"";background:linear-gradient(90deg,#0000,#ffffff4d,#0000);animation:2s infinite shimmer;position:absolute;inset:0}.type-bar{align-items:center;gap:10px;margin-bottom:8px;font-size:12px;display:flex}.type-bar-label{width:120px;color:var(--text-light);text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.type-bar-track{background:var(--bg-hover);border-radius:var(--radius-full);flex:1;height:8px;overflow:hidden}.type-bar-fill{background:var(--primary-gradient);border-radius:var(--radius-full);height:100%;transition:width .6s cubic-bezier(.4,0,.2,1)}.type-bar-count{text-align:right;width:30px;color:var(--text-light);font-weight:600}.upload-list{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);width:360px;max-height:400px;box-shadow:var(--shadow-xl);z-index:500;flex-direction:column;animation:.3s cubic-bezier(.4,0,.2,1) slideIn;display:flex;position:fixed;bottom:20px;right:20px;overflow:hidden}.upload-list-header{border-bottom:1px solid var(--border);background:var(--bg-hover);justify-content:space-between;align-items:center;padding:14px 16px;font-weight:600;display:flex}.upload-item{border-bottom:1px solid var(--border-light);padding:12px 16px}.upload-item-header{justify-content:space-between;align-items:center;margin-bottom:6px;display:flex}.upload-item-name{text-overflow:ellipsis;white-space:nowrap;max-width:280px;font-size:13px;font-weight:500;overflow:hidden}.upload-progress-bar{background:var(--bg-hover);border-radius:var(--radius-full);height:5px;overflow:hidden}.upload-progress-fill{background:var(--primary-gradient);border-radius:var(--radius-full);height:100%;transition:width .3s}.upload-progress-fill.success{background:linear-gradient(135deg,#10b981,#059669)}.upload-progress-fill.error{background:linear-gradient(135deg,#ef4444,#dc2626)}.drag-over{border:2px dashed var(--primary)}.drag-overlay{background:var(--primary-light);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border:3px dashed var(--primary);z-index:999;color:var(--primary);pointer-events:none;flex-direction:column;justify-content:center;align-items:center;font-size:18px;font-weight:600;display:flex;position:fixed;inset:0}.folder-select-item{cursor:pointer;border-bottom:1px solid var(--border-light);border-radius:var(--radius-sm);transition:var(--transition-fast);align-items:center;gap:10px;padding:11px 14px;font-size:13px;display:flex}.folder-select-item:hover{background:var(--bg-hover)}.folder-select-item.selected{background:var(--primary-light);color:var(--primary);font-weight:600}.detail-tags{margin-top:12px}.detail-tags .tag{background:var(--bg-hover);border-radius:var(--radius-full);margin:2px;padding:3px 9px;font-size:11px;font-weight:500;display:inline-block}.summary-box{background:var(--bg-hover);border-radius:var(--radius-md);border-left:3px solid var(--primary);margin-top:12px;padding:14px;font-size:13px;line-height:1.7}.profile-info{align-items:center;gap:20px;padding:8px 0;display:flex}.profile-info .user-avatar.xl{background:var(--primary-gradient);box-shadow:var(--shadow-primary), 0 0 0 4px var(--primary-light)}.profile-info-name{letter-spacing:-.02em;font-size:20px;font-weight:700}.profile-info-email{color:var(--text-light);margin-top:4px;font-size:13px}.profile-info-roles{flex-wrap:wrap;gap:6px;margin-top:10px;display:flex}.theme-options{gap:14px;display:flex}.theme-option{border:2px solid var(--border);background:var(--card);border-radius:var(--radius-lg);cursor:pointer;color:var(--text);transition:var(--transition);flex-direction:column;flex:1;align-items:center;gap:10px;padding:28px 20px;font-size:14px;font-weight:600;display:flex;position:relative;overflow:hidden}.theme-option:before{content:"";background:var(--primary-gradient);opacity:0;transition:var(--transition);z-index:0;position:absolute;inset:0}.theme-option:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-3px)}.theme-option.active{border-color:var(--primary);background:var(--primary-light)}.theme-option>*{z-index:1;position:relative}.theme-option svg{z-index:1;position:absolute;top:10px;right:10px}.theme-option .theme-icon-wrap{border-radius:var(--radius-lg);background:var(--primary-light);width:56px;height:56px;color:var(--primary);justify-content:center;align-items:center;margin-bottom:4px;display:flex}.toast-container{z-index:9999;flex-direction:column;gap:10px;display:flex;position:fixed;top:20px;right:20px}.toast{border-radius:var(--radius-md);color:#fff;box-shadow:var(--shadow-xl);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);align-items:center;gap:8px;min-width:220px;padding:12px 18px;font-size:13px;font-weight:500;animation:.25s cubic-bezier(.4,0,.2,1) slideIn;display:flex}.toast.success{background:linear-gradient(135deg,#10b981,#059669)}.toast.error{background:linear-gradient(135deg,#ef4444,#dc2626)}.toast.info{background:var(--primary-gradient)}.toast.warning{background:linear-gradient(135deg,#f59e0b,#d97706)}.loading{text-align:center;color:var(--text-light);padding:48px;font-size:13px}@media (width<=768px){.sidebar{width:72px}.sidebar .logo span,.sidebar .sidebar-item span,.sidebar .status-text{display:none}.sidebar-item{justify-content:center;padding:12px}.sidebar-item.active:before{display:none}.dashboard-grid{grid-template-columns:1fr}.topbar{padding:12px 16px}.user-name{display:none}.notification-dropdown{width:calc(100vw - 32px);right:-50px}.upload-list{width:calc(100vw - 32px);bottom:16px;right:16px}}.ai-page{max-width:100%}.search-result-item{border-bottom:1px solid var(--border-light);border-radius:var(--radius-md);transition:var(--transition-fast);padding:12px 14px}.search-result-item:hover{background:var(--bg-hover)}.conversation-list{border:1px solid var(--border);border-radius:var(--radius-md);max-height:240px;overflow-y:auto}.conversation-item{cursor:pointer;border-bottom:1px solid var(--border-light);transition:var(--transition-fast);align-items:center;gap:10px;padding:11px 14px;font-size:13px;display:flex}.conversation-item:hover{background:var(--bg-hover)}.conversation-item.active{background:var(--primary-light);color:var(--primary);font-weight:600}.conversation-item:last-child{border-bottom:none}.chat-container{background:var(--bg-hover);border-radius:var(--radius-lg);max-height:480px;margin-bottom:12px;padding:16px;overflow-y:auto}.chat-msg{border-radius:var(--radius-xl);word-break:break-word;max-width:85%;margin-bottom:14px;padding:12px 16px;font-size:13px;line-height:1.7;animation:.3s cubic-bezier(.4,0,.2,1) fadeInUp}.chat-msg.user{background:var(--primary-gradient);color:#fff;box-shadow:var(--shadow-primary);margin-left:auto}.chat-msg.ai{background:var(--card);border:1px solid var(--border);box-shadow:var(--shadow-sm);margin-right:auto}.chat-msg-header{opacity:.7;justify-content:space-between;align-items:center;margin-bottom:6px;font-size:11px;display:flex}.chat-msg-content p{margin:0 0 8px}.chat-msg-content p:last-child{margin-bottom:0}.chat-msg-content h2,.chat-msg-content h3,.chat-msg-content h4{margin:10px 0 6px;font-size:14px;font-weight:700}.chat-msg-content ul{margin:6px 0;padding-left:20px}.chat-msg-content li{margin-bottom:3px}.inline-code{background:var(--bg-hover);border-radius:var(--radius-sm);padding:2px 7px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:12px;font-weight:500}.code-block{border-radius:var(--radius-md);box-shadow:var(--shadow-md);background:#1e1e1e;margin:10px 0;overflow:hidden}.code-block-header{color:#aaa;background:#ffffff0d;justify-content:space-between;align-items:center;padding:8px 14px;font-size:11px;font-weight:500;display:flex}.code-block pre{margin:0;padding:14px;overflow-x:auto}.code-block code{color:#e0e0e0;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:12px;line-height:1.6}