:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.tree-view{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:14px;color:#333;padding:20px;background:#f8f9fa;min-height:100vh}.tree-node{-webkit-user-select:none;user-select:none}.tree-node.dragging{opacity:.5}.tree-node.drag-over{background:#3b82f61a;border-radius:4px}.tree-node-content{display:flex;align-items:center;padding:8px 0;border-radius:4px;transition:background-color .2s ease;cursor:pointer;position:relative}.tree-node-content:hover{background:#0000000d}.tree-expand-btn{background:none;border:none;cursor:pointer;width:20px;height:20px;display:flex;align-items:center;justify-content:center;margin-right:8px;font-size:12px;color:#666;transition:color .2s ease}.tree-expand-btn:hover:not(:disabled){color:#333}.tree-expand-btn:disabled{cursor:default;opacity:.5}.expand-icon{transition:transform .2s ease}.expand-icon.expanded{transform:rotate(90deg)}.loading-spinner{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.tree-node-icon{margin-right:12px;position:relative}.node-circle{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;background:#3b82f6;color:#fff;border-radius:50%;font-weight:600;font-size:14px;box-shadow:0 2px 4px #0000001a;transition:all .2s ease}.tree-node-content:hover .node-circle{background:#2563eb;transform:translateY(-1px);box-shadow:0 4px 8px #00000026}.tree-node-label{flex:1;padding:6px 8px;border-radius:4px;transition:background-color .2s ease;cursor:text;margin-left:8px}.tree-node-label:hover{background:#0000000d}.tree-node-input{flex:1;padding:6px 8px;border:2px solid #3b82f6;border-radius:4px;font-size:14px;font-family:inherit;outline:none;background:#fff}.tree-node-actions{display:flex;gap:4px;opacity:0;transition:opacity .2s ease;margin-left:auto}.tree-node-content:hover .tree-node-actions{opacity:1}.tree-action-btn{background:none;border:none;cursor:pointer;width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:4px;font-size:12px;transition:all .2s ease;color:#666}.tree-action-btn:hover{background:#0000000d;color:#333}.tree-children{position:relative}.tree-children:before{content:"";position:absolute;left:20px;top:-8px;bottom:8px;width:1px;background:#d1d5db;border-left:2px dashed #d1d5db}.tree-node-content:before{content:"";position:absolute;left:-10px;top:50%;width:10px;height:1px;background:#d1d5db;border-top:2px dashed #d1d5db}.tree-node-content:first-child:before{top:50%}.tree-node-content:last-child:before{top:50%}.tree-node-content:only-child:before{display:none}.tree-node-content[style*="padding-left: 0px"]:before,.tree-node-content[style*="padding-left: 0px"]~.tree-children:before{display:none}#root{max-width:1280px;margin:0 auto;padding:2rem;text-align:center}.App{min-height:100vh;display:flex;flex-direction:column;width:1200px}.App-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:2rem;text-align:center;box-shadow:0 2px 10px #0000001a}.App-header h1{margin:0 0 .5rem;font-size:2.5rem;font-weight:700}.App-header p{margin:0 0 1.5rem;font-size:1.1rem;opacity:.9}.tab-navigation{display:flex;gap:10px;justify-content:center;margin-top:20px}.tab-button{padding:10px 20px;border:none;background-color:#fff3;color:#000;cursor:pointer;border-radius:6px;font-size:14px;transition:all .2s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.tab-button:hover{background-color:#ffffff4d}.tab-button.active{background-color:#577bee66;font-weight:600;box-shadow:0 2px 8px #0003}.App-main{flex:1;background:#f8f9fa;padding:20px;border-radius:8px;margin-top:20px}.kanban-board{padding:20px;background-color:#f5f5f5;min-height:100vh}.board-title{text-align:center;color:#333;margin-bottom:30px;font-size:2.5rem;font-weight:600}.board-columns{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}.column{background:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a;min-width:300px;max-width:350px;display:flex;flex-direction:column;transition:all .2s ease}.column.drag-over{background-color:#f0f9ff;box-shadow:0 4px 8px #00000026}.column-header{padding:16px;border-radius:8px 8px 0 0;display:flex;justify-content:space-between;align-items:center;color:#fff}.column-title{margin:0;font-size:1.1rem;font-weight:600}.column-count{background:#fff3;padding:4px 8px;border-radius:12px;font-size:.875rem;font-weight:500}.column-cards{padding:16px;flex:1;display:flex;flex-direction:column;gap:12px;min-height:200px}.column-footer{padding:16px;border-top:1px solid #e5e7eb}.card{background:#fff;border:1px solid #e5e7eb;border-radius:6px;padding:12px;cursor:move;transition:all .2s ease;position:relative}.card:hover{box-shadow:0 2px 4px #0000001a;transform:translateY(-1px)}.card.dragging{opacity:.5;transform:rotate(5deg)}.card-content{display:flex;justify-content:space-between;align-items:flex-start;gap:8px}.card-title{flex:1;color:#374151;font-size:.95rem;line-height:1.4;word-wrap:break-word}.card-delete{background:none;border:none;color:#9ca3af;cursor:pointer;font-size:1.2rem;padding:0;width:20px;height:20px;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:all .2s ease;flex-shrink:0}.card-delete:hover{background:#fee2e2;color:#ef4444}.card-edit{width:100%}.card-input{width:100%;padding:8px;border:1px solid #d1d5db;border-radius:4px;font-size:.95rem;outline:none;transition:border-color .2s ease}.card-input:focus{border-color:#3b82f6;box-shadow:0 0 0 2px #3b82f61a}.btn-add-card{width:100%;padding:8px 12px;background:#fff;border:2px dashed #d1d5db;border-radius:6px;color:#6b7280;cursor:pointer;font-size:.9rem;transition:all .2s ease}.btn-add-card:hover{border-color:#9ca3af;color:#374151;background:#f9fafb}.add-card-form{display:flex;flex-direction:column;gap:8px}.add-card-input{width:100%;padding:8px 12px;border:1px solid #d1d5db;border-radius:6px;font-size:.9rem;outline:none;transition:border-color .2s ease}.add-card-input:focus{border-color:#3b82f6;box-shadow:0 0 0 2px #3b82f61a}.add-card-buttons{display:flex;gap:8px}.btn-save,.btn-cancel{padding:6px 12px;border:none;border-radius:4px;font-size:.85rem;cursor:pointer;transition:all .2s ease}.btn-save{background:#3b82f6;color:#fff}.btn-save:hover{background:#2563eb}.btn-cancel{background:#f3f4f6;color:#6b7280}.btn-cancel:hover{background:#e5e7eb}@media(max-width:768px){.kanban-board{padding:10px}.board-title{font-size:2rem;margin-bottom:20px}.board-columns{flex-direction:column;align-items:center;gap:16px}.column{width:100%;max-width:500px;min-width:unset}.column-cards{min-height:150px}}@media(max-width:480px){.kanban-board{padding:8px}.board-title{font-size:1.5rem;margin-bottom:16px}.column{max-width:100%}.column-header,.column-cards,.column-footer{padding:12px}.card{padding:10px}.card-title{font-size:.9rem}}