@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap";:root{--bg-primary: #f8f9fa;--bg-secondary: #ffffff;--bg-tertiary: #f1f3f5;--bg-card: #ffffff;--bg-hover: #e9ecef;--accent-primary: #495057;--accent-secondary: #6c757d;--accent-blue: #4dabf7;--accent-green: #51cf66;--accent-orange: #ff922b;--accent-red: #fa5252;--text-primary: #212529;--text-secondary: #495057;--text-muted: #868e96;--border-color: #dee2e6;--border-light: #e9ecef;--shadow-sm: 0 1px 3px rgba(0,0,0,.08);--shadow-md: 0 4px 12px rgba(0,0,0,.1);--shadow-lg: 0 8px 24px rgba(0,0,0,.12);--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px}*{box-sizing:border-box}body{margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;font-size:14px;line-height:1.5}.file-manager-container{display:flex;flex-direction:column;height:100vh;background:var(--bg-primary)}.file-manager-header{display:flex;justify-content:space-between;align-items:center;padding:12px 24px;background:var(--bg-secondary);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-sm)}.file-manager-header .header-left,.file-manager-header .header-right{display:flex;align-items:center;gap:8px;min-width:150px}.file-manager-header .header-right{justify-content:flex-end}.file-manager-title{font-size:16px;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:8px}.file-manager-title svg{width:20px;height:20px;color:var(--accent-secondary)}.file-manager-main{display:flex;flex:1;overflow:hidden}.file-tree-container{background:var(--bg-card);border-right:1px solid var(--border-color);display:flex;flex-direction:column;position:relative;height:100%;width:260px;min-width:200px}.file-tree-header{padding:12px 16px;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center;background:var(--bg-tertiary)}.file-tree-title{font-size:12px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}.file-tree-content{flex:1;overflow:auto;padding:8px 0}.tree-node{-webkit-user-select:none;user-select:none}.tree-node-content{display:flex;align-items:center;gap:6px;padding:6px 12px;cursor:pointer;transition:background .1s ease;border-radius:4px;margin:2px 8px}.tree-node-content:hover{background:var(--bg-hover)}.tree-node-content.selected{background:var(--bg-hover);font-weight:500}.tree-node-toggle{width:16px;height:16px;display:inline-flex;align-items:center;justify-content:center;font-size:10px;color:var(--text-muted);transition:transform .15s ease;flex-shrink:0}.tree-node-toggle.expanded{transform:rotate(90deg)}.tree-node-toggle.hidden{visibility:hidden}.tree-node-icon{font-size:16px;flex-shrink:0}.tree-node-name{font-size:13px;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tree-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0000004d;z-index:99;opacity:0;pointer-events:none;transition:opacity .2s ease}.tree-overlay.show{opacity:1;pointer-events:auto}.file-list-container{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--bg-card)}.breadcrumb-container{padding:10px 20px;border-bottom:1px solid var(--border-color);background:var(--bg-tertiary);display:flex;align-items:center;gap:4px;overflow-x:auto}.file-toolbar{padding:10px 20px;display:flex;gap:8px;align-items:center;border-bottom:1px solid var(--border-color);background:var(--bg-secondary);flex-wrap:wrap}.file-table-wrapper{flex:1;overflow:auto;padding:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 14px;font-size:13px;font-weight:500;border:1px solid transparent;border-radius:var(--radius-sm);cursor:pointer;transition:all .15s ease;white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--text-primary);color:#fff;border-color:var(--text-primary)}.btn-primary:hover:not(:disabled){background:#343a40}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border-color:var(--border-color)}.btn-secondary:hover:not(:disabled){background:var(--bg-hover)}.btn-ghost{background:transparent;color:var(--text-secondary);border-color:transparent}.btn-ghost:hover:not(:disabled){background:var(--bg-hover);color:var(--text-primary)}.btn-danger{background:var(--accent-red);color:#fff;border-color:var(--accent-red)}.btn-danger:hover:not(:disabled){background:#e03131}.btn-sm{padding:4px 10px;font-size:12px}.btn-icon{padding:8px;min-width:32px;border:1px solid transparent;border-radius:var(--radius-sm);background:transparent;cursor:pointer;transition:all .15s ease}.btn-icon:hover{background:var(--bg-hover)}.file-table{width:100%;border-collapse:collapse;font-size:13px}.file-table th{position:sticky;top:0;background:var(--bg-tertiary);padding:10px 16px;text-align:left;font-weight:600;color:var(--text-secondary);border-bottom:1px solid var(--border-color);white-space:nowrap;z-index:1}.file-table td{padding:10px 16px;border-bottom:1px solid var(--border-light);color:var(--text-primary)}.file-table tr:hover td{background:var(--bg-hover)}.file-table tr.selected td{background:#e7f5ff}.file-item{display:flex;align-items:center;gap:10px;cursor:pointer;padding:6px 8px;border-radius:var(--radius-sm);transition:background .1s ease}.file-item:hover{background:var(--bg-hover)}.file-item-icon{width:32px;height:32px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}.file-item-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-item-meta{color:var(--text-muted);font-size:12px;min-width:100px}.file-grid-container{flex:1;overflow:auto;padding:16px}.file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:16px}.file-grid-item{display:flex;flex-direction:column;align-items:center;padding:16px 8px;border-radius:var(--radius-md);cursor:pointer;transition:background .15s ease;text-align:center}.file-grid-item:hover{background:var(--bg-hover)}.file-grid-item.selected{background:#e7f5ff}.file-icon{font-size:48px;margin-bottom:8px;line-height:1}.file-name{font-size:12px;color:var(--text-primary);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;word-break:break-all}.breadcrumb{display:flex;align-items:center;gap:4px;font-size:13px}.breadcrumb-item{color:var(--text-secondary);padding:4px 8px;border-radius:var(--radius-sm);background:none;border:none;cursor:pointer;transition:all .1s ease}.breadcrumb-item:hover{background:var(--bg-hover);color:var(--text-primary)}.breadcrumb-item.current{color:var(--text-primary);font-weight:500}.breadcrumb-sep{color:var(--text-muted);font-size:12px}.context-menu{position:fixed;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:6px 0;min-width:180px;z-index:200}.context-menu-item{display:flex;align-items:center;gap:10px;padding:8px 16px;cursor:pointer;transition:background .1s ease;font-size:13px;color:var(--text-primary)}.context-menu-item:hover{background:var(--bg-hover)}.context-menu-item.danger{color:var(--accent-red)}.context-menu-separator{height:1px;background:var(--border-light);margin:4px 0}.context-menu-overlay{position:fixed;top:0;left:0;right:0;bottom:0;z-index:199}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:300}.modal,.modal-content{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);min-width:400px;max-width:90vw;max-height:90vh;overflow:hidden}.modal-header{padding:16px 20px;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.modal-title{font-size:16px;font-weight:600;color:var(--text-primary)}.modal-close{background:none;border:none;font-size:20px;cursor:pointer;color:var(--text-muted);padding:4px}.modal-close:hover{color:var(--text-primary)}.modal-body{padding:20px}.modal-footer{padding:12px 20px;border-top:1px solid var(--border-color);display:flex;justify-content:flex-end;gap:8px}.preview-modal{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000e6;z-index:400;display:flex;flex-direction:column}.preview-header{display:flex;justify-content:flex-end;padding:16px;background:linear-gradient(to bottom,rgba(0,0,0,.6),transparent)}.preview-content{flex:1;display:flex;align-items:center;justify-content:center;overflow:auto;padding:20px}.preview-close{background:#fff3;border:none;color:#fff;width:40px;height:40px;border-radius:50%;cursor:pointer;font-size:20px}.preview-close:hover{background:#ffffff4d}.preview-image{max-width:100%;max-height:100%;object-fit:contain}.preview-iframe{width:100%;height:100%;border:none}.preview-video{max-width:100%;max-height:100%}.preview-audio{width:100%;max-width:500px}.preview-footer{padding:16px;background:linear-gradient(to top,rgba(0,0,0,.6),transparent);display:flex;justify-content:center;gap:24px}.preview-action{background:#ffffff26;border:none;color:#fff;padding:10px 20px;border-radius:var(--radius-sm);cursor:pointer;font-size:14px;display:flex;align-items:center;gap:6px}.preview-action:hover{background:#ffffff40}.form-group{margin-bottom:16px}.form-label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}.form-input{width:100%;padding:10px 12px;font-size:14px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background:var(--bg-card);color:var(--text-primary);transition:border-color .15s ease,box-shadow .15s ease}.form-input:focus{outline:none;border-color:var(--accent-blue);box-shadow:0 0 0 3px #4dabf726}.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;height:200px;color:var(--text-muted)}.loading-spinner{width:32px;height:32px;border:3px solid var(--border-color);border-top-color:var(--accent-blue);border-radius:50%;animation:spin .8s linear infinite;margin-bottom:12px}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted)}.empty-state-icon{font-size:48px;margin-bottom:16px;opacity:.5}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-tertiary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.toast-container{position:fixed;top:20px;right:20px;z-index:500;display:flex;flex-direction:column;gap:8px}.toast{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:12px 16px;display:flex;align-items:center;gap:10px;min-width:280px;animation:slideIn .2s ease}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.toast.success{border-left:4px solid var(--accent-green)}.toast.error{border-left:4px solid var(--accent-red)}.toast.info{border-left:4px solid var(--accent-blue)}.preview-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;z-index:400;display:flex;align-items:center;justify-content:center}.preview-container{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);width:90vw;max-width:1000px;max-height:90vh;display:flex;flex-direction:column;overflow:hidden}.preview-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}.preview-title{font-size:16px;font-weight:600;color:var(--text-primary);margin:0}.preview-body{flex:1;overflow:auto;padding:20px}