:root{--color-bg-primary: #FFFFFF;--color-bg-secondary: #FAFAFA;--color-bg-tertiary: #F5F5F5;--color-bg-canvas: #FCFCFC;--color-surface: #FFFFFF;--color-surface-hover: #F8F8F8;--color-surface-active: #F0F0F0;--color-accent-primary: #6366F1;--color-accent-primary-hover: #4F46E5;--color-accent-primary-light: #EEF2FF;--color-node-task: #6366F1;--color-node-task-bg: #EEF2FF;--color-node-task-border: #C7D2FE;--color-node-note: #F59E0B;--color-node-note-bg: #FEF3C7;--color-node-note-border: #FDE68A;--color-node-milestone: #10B981;--color-node-milestone-bg: #D1FAE5;--color-node-milestone-border: #A7F3D0;--color-text-primary: #0F172A;--color-text-secondary: #475569;--color-text-tertiary: #94A3B8;--color-text-muted: #CBD5E1;--color-text-inverted: #FFFFFF;--color-border-primary: #E2E8F0;--color-border-secondary: #F1F5F9;--color-border-hover: #CBD5E1;--color-border-focus: #6366F1;--color-connection-default: #CBD5E1;--color-connection-hover: #94A3B8;--color-connection-active: #6366F1;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .08), 0 2px 4px -1px rgba(0, 0, 0, .04);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .08), 0 4px 6px -2px rgba(0, 0, 0, .04);--spacing-1: .25rem;--spacing-2: .5rem;--spacing-3: .75rem;--spacing-4: 1rem;--spacing-5: 1.25rem;--spacing-6: 1.5rem;--spacing-8: 2rem;--font-family-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;--font-family-mono: ui-monospace, "Menlo", "Monaco", "Cascadia Code", "Courier New", monospace;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--duration-fast: .1s;--duration-normal: .2s;--ease-in-out: cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden}body{font-family:var(--font-family-sans);font-size:var(--font-size-base);color:var(--color-text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button{font-family:inherit;cursor:pointer}input,textarea{font-family:inherit}.app{display:flex;flex-direction:column;height:100vh;background:var(--color-bg-primary)}#toolbar{position:relative;pointer-events:none;z-index:1000}.toolbar-main{position:fixed;bottom:20px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:4px;padding:8px;background:var(--color-surface);border:1px solid var(--color-border-primary);border-radius:12px;box-shadow:0 4px 12px #0000001a,0 2px 4px #0000000f;pointer-events:auto;z-index:1000}.toolbar-actions{position:fixed;bottom:170px;left:20px;display:flex;align-items:center;gap:4px;padding:8px;background:var(--color-surface);border:1px solid var(--color-border-primary);border-radius:12px;box-shadow:0 4px 12px #0000001a,0 2px 4px #0000000f;pointer-events:auto;z-index:1000}.user-menu{position:fixed;top:20px;right:20px;pointer-events:auto;z-index:1000}.user-btn{background:var(--color-surface);border:1px solid var(--color-border-primary);box-shadow:0 2px 8px #0000001a}.user-dropdown{position:absolute;top:calc(100% + 8px);right:0;min-width:220px;background:var(--color-surface);border:1px solid var(--color-border-primary);border-radius:8px;box-shadow:0 4px 12px #0000001a,0 2px 4px #0000000f;padding:8px;animation:dropdown-fade-in .2s var(--ease-in-out)}@keyframes dropdown-fade-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.user-info{padding:12px;border-bottom:1px solid var(--color-border-primary);margin-bottom:8px}.user-email{font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-text-primary);word-break:break-word}.user-name{font-size:var(--font-size-xs);color:var(--color-text-secondary);margin-top:4px}.logout-btn{width:100%;padding:10px 12px;background:transparent;border:none;border-radius:6px;color:var(--color-text-primary);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);text-align:left;cursor:pointer;transition:all var(--duration-normal) var(--ease-in-out)}.logout-btn:hover{background:var(--color-bg-secondary);color:#ef4444}.toolbar-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;padding:0;background:transparent;border:none;border-radius:8px;color:var(--color-text-primary);cursor:pointer;transition:all var(--duration-normal) var(--ease-in-out);position:relative}.toolbar-btn:hover{background:var(--color-bg-secondary)}.toolbar-btn.active{background:var(--color-accent-primary);color:var(--color-text-inverted)}.toolbar-btn svg{pointer-events:none}.toolbar-divider{width:1px;height:24px;background:var(--color-border-primary);margin:0 4px}.btn-primary{display:inline-flex;align-items:center;gap:var(--spacing-2);padding:var(--spacing-2) var(--spacing-4);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-text-inverted);background:var(--color-accent-primary);border:none;border-radius:6px;cursor:pointer;transition:all var(--duration-normal) var(--ease-in-out)}.btn-primary:hover{background:var(--color-accent-primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{display:inline-flex;align-items:center;gap:var(--spacing-2);padding:var(--spacing-2) var(--spacing-4);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-text-primary);background:var(--color-surface);border:2px solid var(--color-border-primary);border-radius:6px;cursor:pointer;transition:all var(--duration-normal) var(--ease-in-out)}.btn-secondary:hover{border-color:var(--color-accent-primary);color:var(--color-accent-primary)}#canvas{flex:1;position:relative;min-height:0}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:2000;animation:modal-fade-in var(--duration-normal) var(--ease-in-out)}@keyframes modal-fade-in{0%{opacity:0}to{opacity:1}}.modal-content{background:var(--color-surface);border-radius:12px;box-shadow:var(--shadow-lg);max-width:500px;width:90%;max-height:80vh;overflow:hidden;display:flex;flex-direction:column;animation:modal-slide-up var(--duration-normal) var(--ease-in-out)}@keyframes modal-slide-up{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-5) var(--spacing-6);border-bottom:1px solid var(--color-border-primary)}.modal-title{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);color:var(--color-text-primary);margin:0}.modal-close{display:flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;background:transparent;border:none;border-radius:6px;color:var(--color-text-secondary);cursor:pointer;transition:all var(--duration-normal) var(--ease-in-out)}.modal-close:hover{background:var(--color-bg-secondary);color:var(--color-text-primary)}.modal-body{padding:var(--spacing-6);overflow-y:auto}.modal-input{width:100%;padding:var(--spacing-3) var(--spacing-4);font-size:var(--font-size-base);font-family:var(--font-family-sans);color:var(--color-text-primary);background:var(--color-surface);border:2px solid var(--color-border-primary);border-radius:8px;outline:none;transition:all var(--duration-normal) var(--ease-in-out)}.modal-input:focus{border-color:var(--color-border-focus);box-shadow:0 0 0 3px #6366f11a}.modal-input::placeholder{color:var(--color-text-tertiary)}.modal-actions{display:flex;gap:var(--spacing-3);margin-top:var(--spacing-5)}.modal-button{flex:1;padding:var(--spacing-3) var(--spacing-4);font-size:var(--font-size-base);font-weight:var(--font-weight-medium);border:none;border-radius:8px;cursor:pointer;transition:all var(--duration-normal) var(--ease-in-out)}.modal-button-primary{color:var(--color-text-inverted);background:var(--color-accent-primary)}.modal-button-primary:hover{background:var(--color-accent-primary-hover)}.modal-button-primary:disabled{opacity:.5;cursor:not-allowed}.modal-button-secondary{color:var(--color-text-primary);background:var(--color-bg-secondary)}.modal-button-secondary:hover{background:var(--color-bg-tertiary)}.search-results{margin-top:var(--spacing-4);max-height:300px;overflow-y:auto}.search-result-item{padding:var(--spacing-3) var(--spacing-4);border-radius:6px;cursor:pointer;transition:all var(--duration-normal) var(--ease-in-out);border:1px solid transparent}.search-result-item:hover{background:var(--color-bg-secondary);border-color:var(--color-border-primary)}.search-result-text{font-size:var(--font-size-base);font-weight:var(--font-weight-medium);color:var(--color-text-primary);margin-bottom:var(--spacing-1)}.search-result-type{font-size:var(--font-size-xs);color:var(--color-text-tertiary);text-transform:uppercase;letter-spacing:.05em}.search-no-results{padding:var(--spacing-4);text-align:center;color:var(--color-text-tertiary);font-size:var(--font-size-sm)}.time-picker-examples{margin-top:var(--spacing-3);padding:var(--spacing-3);background:var(--color-bg-secondary);border-radius:6px}.time-picker-examples-title{font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);color:var(--color-text-secondary);margin-bottom:var(--spacing-2);text-transform:uppercase;letter-spacing:.05em}.time-picker-examples-list{display:flex;flex-wrap:wrap;gap:var(--spacing-2)}.time-picker-example{padding:var(--spacing-1) var(--spacing-2);background:var(--color-surface);border:1px solid var(--color-border-primary);border-radius:4px;font-size:var(--font-size-xs);color:var(--color-text-secondary);font-family:var(--font-family-mono);cursor:pointer;transition:all var(--duration-normal) var(--ease-in-out)}.time-picker-example:hover{border-color:var(--color-accent-primary);color:var(--color-accent-primary)}.search-results-indicator{position:fixed;top:20px;right:20px;padding:var(--spacing-3) var(--spacing-4);background:var(--color-surface);border:1px solid var(--color-border-primary);border-radius:8px;box-shadow:0 4px 12px #0000001a,0 2px 4px #0000000f;font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-text-primary);z-index:1000;animation:slide-in-right .3s var(--ease-in-out)}@keyframes slide-in-right{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.search-hint{font-size:var(--font-size-xs);color:var(--color-text-tertiary);margin-top:var(--spacing-1);font-weight:var(--font-weight-normal)}.selection-toolbar{position:fixed;top:20px;left:20px;display:flex;flex-direction:column;gap:8px;padding:12px 14px;background:var(--color-surface);border:1px solid var(--color-border-primary);border-radius:12px;box-shadow:0 4px 16px #0000001f,0 2px 4px #00000014;z-index:1000;animation:toolbar-fade-in .2s var(--ease-in-out);min-width:160px}@keyframes toolbar-fade-in{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.selection-toolbar-header{display:flex;align-items:center;padding-bottom:8px;border-bottom:1px solid var(--color-border-secondary)}.selection-type-badge{font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);color:var(--color-accent-primary);background:var(--color-accent-primary-light);padding:4px 10px;border-radius:4px;text-transform:uppercase;letter-spacing:.03em}.selection-toolbar-controls{display:flex;flex-direction:column;gap:8px}.style-control{display:flex;align-items:center;justify-content:space-between;gap:12px;position:relative}.style-control-label{font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-text-secondary);flex-shrink:0}.color-picker-trigger{display:flex;align-items:center;gap:6px;padding:6px 10px;background:var(--color-bg-secondary);border:1px solid var(--color-border-primary);border-radius:6px;cursor:pointer;transition:all var(--duration-fast) var(--ease-in-out);min-width:70px}.color-picker-trigger:hover{background:var(--color-bg-tertiary);border-color:var(--color-border-hover)}.color-preview{width:18px;height:18px;border-radius:4px;flex-shrink:0;box-shadow:inset 0 0 0 1px #00000026;background-image:linear-gradient(45deg,#ccc 25%,transparent 25%),linear-gradient(-45deg,#ccc 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#ccc 75%),linear-gradient(-45deg,transparent 75%,#ccc 75%);background-size:8px 8px;background-position:0 0,0 4px,4px -4px,-4px 0px;position:relative}.color-preview:after{content:"";position:absolute;inset:0;border-radius:4px;background:inherit}.dropdown-arrow{color:var(--color-text-tertiary);flex-shrink:0}.color-dropdown{position:absolute;top:0;left:calc(100% + 8px);background:var(--color-surface);border:1px solid var(--color-border-primary);border-radius:10px;box-shadow:0 8px 24px #00000026;padding:10px;z-index:1001;animation:dropdown-fade-in .15s var(--ease-in-out)}.color-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}.color-option{width:26px;height:26px;border-radius:6px;cursor:pointer;transition:all var(--duration-fast) var(--ease-in-out);box-shadow:inset 0 0 0 1px #0000001a;padding:0;border:none;display:flex;align-items:center;justify-content:center;color:var(--color-text-tertiary)}.color-option:hover{transform:scale(1.1);box-shadow:0 2px 8px #0003,inset 0 0 0 1px #0000001a}.color-option.selected{box-shadow:0 0 0 2px var(--color-accent-primary);transform:scale(1.05)}.select-trigger{display:flex;align-items:center;justify-content:space-between;gap:6px;padding:6px 10px;background:var(--color-bg-secondary);border:1px solid var(--color-border-primary);border-radius:6px;cursor:pointer;transition:all var(--duration-fast) var(--ease-in-out);min-width:70px}.select-trigger:hover{background:var(--color-bg-tertiary);border-color:var(--color-border-hover)}.select-value{font-size:var(--font-size-sm);color:var(--color-text-primary);font-weight:var(--font-weight-medium)}.select-dropdown{position:absolute;top:0;left:calc(100% + 8px);min-width:140px;background:var(--color-surface);border:1px solid var(--color-border-primary);border-radius:10px;box-shadow:0 8px 24px #00000026;padding:6px;z-index:1001;animation:dropdown-fade-in .15s var(--ease-in-out)}.select-option{display:block;width:100%;padding:8px 12px;font-size:var(--font-size-sm);color:var(--color-text-primary);background:transparent;border:none;border-radius:6px;text-align:left;cursor:pointer;transition:background var(--duration-fast) var(--ease-in-out)}.select-option:hover{background:var(--color-bg-secondary)}.select-option.selected{background:var(--color-accent-primary-light);color:var(--color-accent-primary);font-weight:var(--font-weight-medium)}.style-section-label{font-size:var(--font-size-xs);font-weight:var(--font-weight-semibold);color:var(--color-text-tertiary);text-transform:uppercase;letter-spacing:.05em;margin-top:8px;margin-bottom:4px;padding-top:8px;border-top:1px solid var(--color-border-secondary)}.style-section-label:first-child{margin-top:0;padding-top:0;border-top:none}.opacity-control{display:flex;align-items:center;gap:8px;min-width:100px}.opacity-slider{flex:1;-webkit-appearance:none;appearance:none;height:6px;background:var(--color-bg-tertiary);border-radius:3px;outline:none;cursor:pointer}.opacity-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;background:var(--color-accent-primary);border-radius:50%;cursor:pointer;box-shadow:0 1px 3px #0003;transition:transform var(--duration-fast) var(--ease-in-out)}.opacity-slider::-webkit-slider-thumb:hover{transform:scale(1.15)}.opacity-slider::-moz-range-thumb{width:14px;height:14px;background:var(--color-accent-primary);border-radius:50%;cursor:pointer;border:none;box-shadow:0 1px 3px #0003}.opacity-value{font-size:var(--font-size-xs);font-weight:var(--font-weight-medium);color:var(--color-text-secondary);min-width:32px;text-align:right}.flow-canvas{flex:1;width:100%;height:100%;background:var(--color-bg-canvas)}.react-flow__node{padding:0;border-radius:0;background:transparent;border:none;box-shadow:none}.react-flow__edge-path{stroke:var(--color-connection-default);stroke-width:2}.react-flow__edge:hover .react-flow__edge-path,.react-flow__edge.selected .react-flow__edge-path{stroke:var(--color-connection-active);stroke-width:2.5}.react-flow__connection-line{display:none!important}.react-flow__handle{width:12px;height:12px;background:var(--color-accent-primary);border:2px solid var(--color-surface);border-radius:50%;opacity:0!important;pointer-events:none!important;transition:opacity var(--duration-normal) var(--ease-in-out),transform var(--duration-normal) var(--ease-in-out)}.react-flow__handle-top{top:-6px}.react-flow__handle-right{right:-6px}.react-flow__handle-bottom{bottom:-6px}.react-flow__handle-left{left:-6px}.react-flow__controls{bottom:20px;left:20px;box-shadow:var(--shadow-md);border-radius:8px;overflow:hidden;border:1px solid var(--color-border-primary)}.react-flow__controls-button{background:var(--color-surface);border:none;border-bottom:1px solid var(--color-border-secondary);color:var(--color-text-secondary);width:32px;height:32px;display:flex;align-items:center;justify-content:center;transition:background var(--duration-fast) var(--ease-in-out),color var(--duration-fast) var(--ease-in-out)}.react-flow__controls-button:hover{background:var(--color-surface-hover);color:var(--color-accent-primary)}.react-flow__controls-button svg{fill:currentColor}.react-flow__minimap{bottom:20px;right:20px;background:var(--color-surface);border-radius:8px;box-shadow:var(--shadow-md);border:1px solid var(--color-border-primary);overflow:hidden}.react-flow__minimap-mask{fill:#0000001a}.react-flow__background{background:var(--color-bg-canvas)}.react-flow__selection{background:#6366f11a;border:1px solid var(--color-accent-primary);border-radius:4px}.react-flow__attribution{display:none}.node{min-width:160px;max-width:280px;background:var(--color-node-task-bg);border:2px solid var(--color-node-task-border);border-radius:8px;padding:var(--spacing-4);box-shadow:var(--shadow-sm);cursor:grab;transition:box-shadow var(--duration-normal) var(--ease-in-out),border-color var(--duration-normal) var(--ease-in-out)}.node-header,.shape-content{-webkit-user-select:text;user-select:text;cursor:text;white-space:pre-wrap}.node-footer,.node-add-btn,.node-resize-handle{-webkit-user-select:none;user-select:none}.node:hover{box-shadow:var(--shadow-md);border-color:var(--color-border-hover)}.node.selected{border-color:var(--color-accent-primary);box-shadow:var(--shadow-lg),0 0 0 3px var(--color-accent-primary-light)}.node-task{background:var(--color-node-task-bg);border-color:var(--color-node-task-border);border-style:solid}.node-task.selected{border-color:var(--color-node-task)}.node-note{background:var(--color-node-note-bg);border-color:var(--color-node-note-border);border-style:dashed}.node-note.selected{border-color:var(--color-node-note);border-style:solid}.node-milestone{background:var(--color-node-milestone-bg);border-color:var(--color-node-milestone-border);border-width:3px;border-style:solid}.node-milestone.selected{border-color:var(--color-node-milestone)}.node-text{background:transparent;border-color:var(--color-border-secondary);border-width:1px;border-style:solid;box-shadow:none}.node-text:hover{background:#ffffff80;border-color:var(--color-border-primary);box-shadow:var(--shadow-sm)}.node-text.selected{background:#fffc;border-color:var(--color-accent-primary);box-shadow:0 0 0 2px var(--color-accent-primary-light)}.node-header{font-weight:var(--font-weight-semibold);margin-bottom:var(--spacing-2);outline:none;border:none;background:transparent;width:100%;font-size:var(--font-size-base);line-height:var(--line-height-normal);min-height:1.5em;cursor:text}.node-header:empty:before{content:attr(data-placeholder);color:var(--color-text-muted);font-weight:var(--font-weight-normal)}.node-header:focus{outline:none}.node-footer{margin-top:var(--spacing-3);padding-top:var(--spacing-3);border-top:1px solid var(--color-border-secondary);display:flex;align-items:center;gap:var(--spacing-2)}.time-input{width:60px;padding:2px 6px;font-size:11px;font-weight:500;font-family:var(--font-family-mono);color:var(--color-text-secondary);background:var(--color-bg-secondary);border:1px solid var(--color-border-secondary);border-radius:4px;outline:none;text-align:center;transition:all var(--duration-fast) var(--ease-in-out)}.time-input:hover{border-color:var(--color-accent-primary)}.time-input:focus{border-color:var(--color-accent-primary);background:var(--color-surface);color:var(--color-text-primary)}.time-input.error{border-color:#ef4444;background:#fef2f2}.time-input::placeholder{color:var(--color-text-muted)}.react-flow__node.dragging .node{cursor:grabbing}.node-add-btn{position:absolute;width:24px;height:24px;background:var(--color-surface);border:2px solid var(--color-accent-primary);border-radius:50%;display:none;align-items:center;justify-content:center;cursor:pointer;font-size:18px;font-weight:700;color:var(--color-accent-primary);box-shadow:var(--shadow-sm);transition:all var(--duration-fast) var(--ease-in-out);z-index:10;-webkit-user-select:none;user-select:none}.node:hover 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