body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;margin:0}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}:root{--bg-primary:#fff;--bg-secondary:#f8f9fa;--bg-tertiary:#e9ecef;--bg-elevated:#fff;--text-primary:#212529;--text-secondary:#6c757d;--text-tertiary:#adb5bd;--text-inverted:#fff;--border-primary:#dee2e6;--border-secondary:#e9ecef;--border-focus:#007bff;--state-done:#28a745;--state-blocked:#ffc107;--state-archived:#6c757d;--state-progress:#007bff;--priority-low:#28a745;--priority-medium:#ffc107;--priority-high:#fd7e14;--priority-critical:#dc3545;--interactive-primary:#007bff;--interactive-primary-hover:#0056b3;--interactive-secondary:#6c757d;--interactive-secondary-hover:#545b62;--interactive-danger:#dc3545;--interactive-danger-hover:#c82333;--spacing-xs:4px;--spacing-sm:8px;--spacing-md:16px;--spacing-lg:24px;--spacing-xl:32px;--spacing-xxl:48px;--font-size-xs:0.75rem;--font-size-sm:0.875rem;--font-size-md:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--font-size-xxl:1.5rem;--font-weight-regular:400;--font-weight-medium:500;--font-weight-semibold:600;--font-weight-bold:700;--line-height-tight:1.25;--line-height-normal:1.5;--line-height-relaxed:1.75;--duration-fast:150ms;--duration-normal:250ms;--duration-slow:350ms;--easing-ease-in-out:cubic-bezier(0.4,0,0.2,1);--easing-ease-out:cubic-bezier(0,0,0.2,1);--easing-ease-in:cubic-bezier(0.4,0,1,1);--easing-bounce:cubic-bezier(0.68,-0.55,0.265,1.55);--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a,0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a,0 4px 6px -4px #0000001a;--shadow-xl:0 20px 25px -5px #0000001a,0 8px 10px -6px #0000001a}.App{display:flex;flex-direction:column;min-height:100vh;text-align:center}.App-header{background:linear-gradient(135deg,#1a1f2e,#2d3748 50%,#1a1f2e);box-shadow:0 4px 20px #0000004d;color:#fff;overflow:hidden;padding:20px 32px;position:relative}.App-header:before{background:radial-gradient(circle at 20% 50%,#007bff1a 0,#0000 50%),radial-gradient(circle at 80% 50%,#28a7451a 0,#0000 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.load-file-button{opacity:1}.action-card-file .load-file-button:hover{background:#0056b3;transform:scale(1.05)}.action-card-icon{display:block;font-size:3rem;margin-bottom:20px}.action-card-content{position:relative;text-align:left;z-index:1}.action-card-title{color:#2d3748;font-size:1.3rem;font-weight:600;margin:0 0 12px}.action-card-description{color:#718096;font-size:.95rem;line-height:1.6;margin:0}.action-card-arrow{bottom:24px;color:#007bff;font-size:1.5rem;opacity:0;position:absolute;right:24px;transform:translateX(-10px);transition:all .4s ease}.action-card:hover .action-card-arrow{opacity:1;transform:translateX(0)}.main-toolbar{background:#fff;border-radius:12px;box-shadow:0 2px 8px #0000000f;gap:12px;justify-content:space-between;margin-bottom:16px;padding:12px 16px}.main-toolbar,.toolbar-actions{align-items:center;display:flex;flex-wrap:wrap}.toolbar-actions{gap:8px}.toolbar-button-secondary{background:#f7fafc;border:1px solid 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12px}.tree-stats{display:flex;flex-wrap:wrap;gap:12px}.tree-stats .stat{background-color:#f8f9fa;border-radius:12px;color:#666;font-size:13px;padding:2px 8px}.tree-content{font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:14px;line-height:1.6;position:relative}.tree-content-free-floating{background-color:#fafafa;border:1px solid #ddd;border-radius:4px;box-sizing:border-box;cursor:grab;max-height:calc(100vh - 200px);max-width:100%;min-height:500px;overflow-x:auto;overflow-y:auto;padding:40px;position:relative;resize:vertical;transition:cursor .2s ease;width:100%;z-index:1}.tree-content-free-floating.is-panning{cursor:grabbing!important;-webkit-user-select:none;user-select:none}.tree-content-free-floating.is-panning *{cursor:grabbing!important}.tree-content-free-floating .archived-task-group,.tree-content-free-floating .todo-node-free-floating,.tree-content-free-floating button,.tree-content-free-floating input,.tree-content-free-floating textarea{cursor:auto!important}.todo-node-free-floating{position:absolute;width:240px;z-index:2}.todo-node-free-floating.priority-dropdown-open{z-index:2000}.todo-node-free-floating .node-content{background-color:#fff;background-color:var(--bg-elevated);border:2px solid #dee2e6;border:2px solid var(--border-primary);border-radius:12px;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -2px #0000001a;box-shadow:var(--shadow-md);color:#212529;color:var(--text-primary);margin:0;padding:16px;padding:var(--spacing-md);transition:all .25s cubic-bezier(.4,0,.2,1);transition:all var(--duration-normal) var(--easing-ease-in-out)}.todo-node-free-floating .node-content:hover{border-color:#007bff;border-color:var(--border-focus);box-shadow:0 10px 15px -3px #0000001a,0 4px 6px -4px #0000001a;box-shadow:var(--shadow-lg);transform:translateY(-2px)}.done-checkbox{cursor:pointer;margin-right:8px}.node-name-edit{background:#fff;border:1px solid #007bff;border-radius:2px;font-size:inherit;font-weight:inherit;margin:0;outline:none;padding:2px 4px}.node-name{cursor:pointer;-webkit-user-select:none;user-select:none}.node-name:hover{background-color:#007bff1a;border-radius:2px;margin:-2px -4px;padding:2px 4px}.hide-children-warning{font-size:14px;margin-left:8px}.node-description{border-top:1px solid #eee;margin-top:8px;padding-top:8px}.description-text{border-radius:2px;color:#666;cursor:pointer;font-size:12px;line-height:1.4;max-height:80px;min-height:16px;overflow-y:auto;padding:4px}.description-text.empty{background-color:#00000005;border:1px dashed #ddd;color:#999;font-style:italic}.description-text:hover{background-color:#007bff1a}.description-text.empty:hover{background-color:#007bff0d;border-color:#007bff}.description-edit{border:1px solid #007bff;border-radius:2px;font-size:12px;max-height:80px;min-height:40px;outline:none;padding:4px;resize:vertical;width:100%}.todo-node-free-floating.blocked .node-content{background-color:#fff3cd!important;border-color:#ffc107!important}.todo-node-free-floating.done .node-content{background-color:#d4edda!important;border-color:#28a745!important}.todo-node-free-floating.archived{display:none;opacity:.5}.todo-node-free-floating.show-all .archived{display:block;opacity:.7}.todo-node{margin:4px 0;position:relative}.node-connector{align-items:flex-start;display:flex;position:relative}.connector-lines{height:100%;left:0;pointer-events:none;position:absolute;top:0;width:100%}.connector-vertical{background-color:#ccc;bottom:8px;position:absolute;top:-8px;width:1px}.connector-vertical.hidden{display:none}.connector-vertical-continue{background-color:#ccc;bottom:-8px;position:absolute;top:12px;width:1px}.connector-horizontal{background-color:#ccc;height:1px;position:absolute;top:12px;width:20px}.connector-horizontal.last{background-image:none}.connector-horizontal:after{border-bottom:3px solid #0000;border-left:4px solid #ccc;border-top:3px solid #0000;content:"";height:0;position:absolute;right:-4px;top:-2px;width:0}.node-content{background-color:#f8f9fa;border:1px solid #dee2e6;border-radius:4px;margin-left:4px;min-width:200px;padding:8px 12px}.node-header{gap:8px}.status-icon{font-size:16px}.node-name{flex:1 1;font-weight:500}.children-indicator{color:#666;font-size:12px}.node-details{gap:8px}.priority-badge{color:#fff;font-size:11px}.node-id{color:#6c757d;font-family:monospace;font-size:11px}.tree-children{margin-left:0}.tree-error{color:#dc3545;padding:40px;text-align:center}.tree-error h3{color:#dc3545;margin:0 0 12px}.tree-legend{border-top:1px solid #eee;margin-top:10px;padding-top:8px}.tree-legend h4{color:#666;font-size:14px;margin:0 0 8px}.legend-items{display:flex;flex-wrap:wrap;gap:16px}.legend-item{align-items:center;color:#666;display:flex;font-size:12px;gap:4px}.instructions{background-color:#e7f3ff;border:1px solid #b3d9ff;border-radius:4px;font-size:13px;margin-bottom:10px;padding:12px}.instructions h4{color:#0056b3;font-size:14px;margin:0 0 8px}.instructions ul{margin:0;padding-left:20px}.instructions li{color:#333;font-size:14px;line-height:1.4;margin-bottom:4px}.instructions li:last-child{margin-bottom:0}.instructions strong{color:#0056b3}.context-menu{background-color:#fff;border:1px solid #ddd;border-radius:6px;box-shadow:0 4px 12px #00000026;font-size:14px;min-width:200px;padding:4px 0;position:fixed;z-index:10000}.context-menu-header{border-bottom:1px solid #eee;margin-bottom:4px;padding:8px 12px 4px}.context-menu-title{color:#333;font-size:12px;font-weight:600;letter-spacing:.5px;text-transform:uppercase}.context-menu-item{align-items:center;background:none;border:none;color:#333;cursor:pointer;display:flex;font-size:14px;gap:8px;padding:8px 12px;text-align:left;transition:background-color 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button:first-child:disabled{background-color:#6c757d;border-color:#6c757d;cursor:not-allowed}.add-child-buttons button:last-child:hover{background-color:#f5f5f5}.priority-submenu{background-color:#f8f9fa;border-bottom:1px solid #eee;border-top:1px solid #eee;margin:0 -4px;padding:4px 0}.priority-item{background:none;border:none;color:#666;cursor:pointer;display:block;font-size:13px;padding:6px 24px;text-align:left;text-transform:capitalize;transition:background-color .15s;width:100%}.priority-item:hover{background-color:#e9ecef}.priority-item.active{background-color:#007bff;color:#fff}.progress-bar-container{margin-bottom:8px;margin-bottom:var(--spacing-sm)}.progress-bar{background-color:#e9ecef;background-color:var(--bg-tertiary);height:4px;overflow:hidden;width:100%}.progress-bar,.progress-fill{border-radius:2px;position:relative}.progress-fill{height:100%;transition:width .25s cubic-bezier(.4,0,.2,1);transition:width var(--duration-normal) var(--easing-ease-in-out)}.node-progress-bar{margin-bottom:4px;margin-bottom:var(--spacing-xs)}.priority-icon{font-size:.875rem;font-size:var(--font-size-sm);margin-right:4px;margin-right:var(--spacing-xs)}.node-header{align-items:center;display:flex;gap:4px;gap:var(--spacing-xs);margin-bottom:4px;margin-bottom:var(--spacing-xs)}.drag-handle{border-radius:4px;color:#adb5bd;color:var(--text-tertiary);cursor:grab;font-size:1.125rem;font-size:var(--font-size-lg);line-height:1;padding:2px;transition:all .15s cubic-bezier(.4,0,.2,1);transition:all var(--duration-fast) var(--easing-ease-in-out)}.drag-handle:hover{background-color:#e9ecef;background-color:var(--bg-tertiary);color:#6c757d;color:var(--text-secondary)}.drag-handle:active{cursor:grabbing}.todo-node-free-floating.dragging{opacity:.8;transform:rotate(3deg)}.todo-node-free-floating[data-dragging=true] .node-content{border-color:#007bff;border-color:var(--border-focus);box-shadow:0 20px 25px -5px #0000001a,0 8px 10px -6px #0000001a;box-shadow:var(--shadow-xl)}.drop-zone-indicator{background-color:#007bff;background-color:var(--border-focus);border-radius:2px;opacity:.7;pointer-events:none;position:absolute;z-index:999}.drop-zone-vertical{height:100%;width:2px}.drop-zone-horizontal{height:2px;width:100%}.todo-node-free-floating.drop-target-valid{background-color:#4aabf71a!important;border-color:#007bff!important;border-color:var(--state-progress)!important;transform:scale(1.02)}.todo-node-free-floating.drop-target-invalid{background-color:#ff6b6b1a!important;border-color:#dc3545!important;border-color:var(--interactive-danger)!important;opacity:.5}.status-icon{font-size:1rem;font-size:var(--font-size-md);text-align:center;width:20px}.children-indicator{background-color:#e9ecef;background-color:var(--bg-tertiary);color:#6c757d;color:var(--text-secondary);margin-left:auto}.children-indicator,.priority-badge{border-radius:10px;font-size:.75rem;font-size:var(--font-size-xs);padding:2px 6px}.priority-badge{font-weight:700;font-weight:var(--font-weight-bold);min-width:60px;text-align:center;text-transform:uppercase}.node-details{align-items:center;display:flex;gap:4px;gap:var(--spacing-xs);margin-top:4px;margin-top:var(--spacing-xs)}.floating-toolbar{animation:toolbar-slide-in .25s cubic-bezier(0,0,.2,1);animation:toolbar-slide-in var(--duration-normal) var(--easing-ease-out);background-color:#fff;background-color:var(--bg-elevated);border:1px solid #dee2e6;border:1px solid var(--border-primary);border-radius:8px;box-shadow:0 10px 15px -3px #0000001a,0 4px 6px -4px #0000001a;box-shadow:var(--shadow-lg);padding:4px;padding:var(--spacing-xs)}@keyframes toolbar-slide-in{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.toolbar-content{align-items:center;display:flex;gap:4px;gap:var(--spacing-xs)}.toolbar-button{align-items:center;background:none;background-color:#f8f9fa;background-color:var(--bg-secondary);border:1px solid #e9ecef;border:1px solid var(--border-secondary);border-radius:6px;color:#212529;color:var(--text-primary);cursor:pointer;display:flex;font-size:.875rem;font-size:var(--font-size-sm);height:32px;justify-content:center;transition:all .15s cubic-bezier(.4,0,.2,1);transition:all var(--duration-fast) 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