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0;border:none;outline:none;flex:1;min-width:0;padding:0;font-size:12px;line-height:1.3}.folder-tree__rename-input:disabled{cursor:not-allowed}.folder-tree__rename-error{color:#dc2626;white-space:nowrap;margin-left:4px;font-size:10px}.folder-tree__count{color:#3b82f6;text-align:center;background:#eff6ff;border-radius:999px;flex-shrink:0;min-width:16px;margin-left:4px;margin-right:2px;padding:0 5px;font-size:10px;font-weight:500;line-height:16px}.folder-tree__row--active .folder-tree__count{color:#2563eb;background:#dbeafe}.folder-tree__drag-handle{color:#9ca3af;cursor:grab;opacity:0;background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;width:16px;height:26px;padding:0;transition:opacity .12s;display:inline-flex}.folder-tree__row:hover .folder-tree__drag-handle{opacity:1}.folder-tree__drag-handle:active{cursor:grabbing}.folder-tree-empty{text-align:center;min-height:64px;color:var(--text-secondary);flex-direction:column;justify-content:center;align-items:center;gap:2px;padding:10px;font-size:11px;display:flex}.folder-tag-panel__refresh-indicator{color:var(--text-tertiary);text-align:center;padding:2px 6px 0;font-size:10px}.folder-tree-empty span{color:var(--text-tertiary);font-size:10px}.four-col{grid-template-columns:var(--col-category-width) var(--col-folder-width) minmax(0, 1fr) var(--col-editor-width);background:var(--bg-base);height:100vh;transition:grid-template-columns .2s;display:grid;overflow:hidden}.four-col--dragging{transition:none}.four-col__panel{flex-direction:column;min-height:0;display:flex;overflow:hidden}.four-col__panel--category{background:#f9f9f9;border-right:1px solid #0000000f;position:relative;overflow:visible}.category-resize-handle{z-index:30;cursor:col-resize;touch-action:none;width:6px;height:100%;position:absolute;top:0;right:-3px}.category-resize-handle:after{content:"";background:0 0;border-radius:999px;width:2px;height:32px;transition:background .15s;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.category-resize-handle:hover:after,.four-col--dragging .category-resize-handle:after{background:#6366f18c}.four-col__panel--folder{border-right:1px solid var(--border);background:var(--bg-sidebar)}.four-col__panel--bookmarks{background:var(--bg-base)}.four-col__panel--editor{border-left:1px solid var(--border);background:var(--bg-surface)}@media (prefers-color-scheme:dark){.four-col__panel--category{background:#111827;border-right-color:#1e293b}.category-resize-handle:hover:after,.four-col--dragging .category-resize-handle:after{background:#818cf8a6}}@media (width<=1280px){.four-col{grid-template-columns:var(--col-category-width) 200px minmax(0, 1fr) 280px}}@media (width<=1024px){.four-col{grid-template-columns:var(--col-category-width) 180px minmax(0, 1fr)}.four-col__panel--editor{display:none}}@media (width<=768px){.four-col{grid-template-columns:var(--col-category-width) minmax(0, 1fr)}.four-col__panel--folder{display:none}}