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var(--color-node-formula-icon);--color-output-accent: var(--color-node-output);--color-output-accent-soft: var(--color-node-output-soft);--color-output-icon: var(--color-node-output-icon);background-color:var(--color-bg-primary);color:var(--color-text-secondary)}:root[data-theme=light] body,:root[data-theme=light] #root,:root[data-theme=light] .app-shell{background:var(--color-bg-primary);color:var(--color-text-secondary)}:root[data-theme=light] .app-header{background:var(--color-bg-secondary);border-bottom:1px solid var(--color-border-primary);box-shadow:0 1px 2px var(--color-shadow-sm)}:root[data-theme=light] .app-header h1{color:var(--color-text-primary)}:root[data-theme=light] .header-controls .settings-button{background:var(--color-bg-panel);border:1px solid var(--color-border-button);color:var(--color-text-primary)}:root[data-theme=light] .header-controls .settings-button:hover{background:var(--color-bg-elevated);border-color:var(--color-border-secondary);box-shadow:0 4px 12px var(--color-shadow-md)}:root[data-theme=light] .workspace{background:var(--color-bg-primary)}:root[data-theme=light] .sidebar,:root[data-theme=light] .inspector{background:var(--color-bg-panel);border-color:var(--color-border-primary);box-shadow:inset 1px 0 0 var(--color-border-primary)}:root[data-theme=light] .sidebar::-webkit-scrollbar-track,:root[data-theme=light] .inspector::-webkit-scrollbar-track,:root[data-theme=light] .panel-body::-webkit-scrollbar-track{background:var(--color-bg-scrollbar-track)}:root[data-theme=light] .sidebar::-webkit-scrollbar-thumb,:root[data-theme=light] .inspector::-webkit-scrollbar-thumb,:root[data-theme=light] .panel-body::-webkit-scrollbar-thumb{background:var(--color-bg-scrollbar-thumb)}:root[data-theme=light] .canvas,:root[data-theme=light] .canvas-content,:root[data-theme=light] .canvas-content .react-flow__pane{background-color:var(--color-bg-primary);background-image:radial-gradient(var(--color-bg-canvas-grid) 1px,transparent 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.panel-subtitle{color:var(--color-text-muted)}:root[data-theme=light] .assistant-title{color:var(--color-text-primary)}:root[data-theme=light] .assistant-status.ready{background:var(--color-success-bg);border-color:var(--color-success-border);color:var(--color-success)}:root[data-theme=light] .assistant-status.loading{background:var(--color-info-bg);border-color:var(--color-info-border);color:var(--color-info-hover)}:root[data-theme=light] .assistant-status.error{background:var(--color-error-bg);border-color:var(--color-error-border);color:var(--color-error-critical)}:root[data-theme=light] .assistant-status.missing{background:var(--color-warning-bg);border-color:var(--color-warning-border);color:var(--color-warning)}:root[data-theme=light] .assistant-message{background:var(--color-message-bg);border-color:var(--color-message-border);color:var(--color-text-secondary)}:root[data-theme=light] 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.assistant-input::placeholder{color:var(--color-text-tertiary)}:root[data-theme=light] .assistant-form textarea{background:var(--color-bg-input);border:1px solid var(--color-border-input);color:var(--color-text-primary)}:root[data-theme=light] .field input:focus,:root[data-theme=light] .field textarea:focus,:root[data-theme=light] .field select:focus,:root[data-theme=light] .assistant-form textarea:focus{background:var(--color-bg-input-focus);border-color:var(--color-border-focus)}:root[data-theme=light] button.primary{box-shadow:0 10px 20px var(--color-button-primary-shadow)}:root[data-theme=light] button.secondary{background:var(--color-button-secondary-bg);color:var(--color-button-secondary-text);border:1px solid var(--color-button-secondary-border);box-shadow:0 6px 16px var(--color-button-secondary-shadow)}:root[data-theme=light] button.secondary:hover:not(:disabled){background:var(--color-bg-button-secondary-hover)}:root[data-theme=light] button.danger{background:var(--color-button-danger-bg);color:var(--color-button-danger-text);border-color:var(--color-button-danger-border)}:root[data-theme=light] .palette-item{background:var(--color-bg-panel);border-color:var(--color-border-primary);color:var(--color-text-primary);box-shadow:0 6px 12px var(--color-shadow-sm)}:root[data-theme=light] .palette-item:hover{border-color:var(--color-border-secondary);background:var(--color-bg-card-hover)}:root[data-theme=light] .palette-item.palette-distribution{border-color:var(--color-node-distribution-border);box-shadow:0 14px 28px var(--color-node-distribution-glow)}:root[data-theme=light] .palette-item.palette-formula{border-color:var(--color-node-formula-border);box-shadow:0 14px 28px var(--color-node-formula-glow)}:root[data-theme=light] .palette-item.palette-output{border-color:var(--color-node-output-border);box-shadow:0 14px 28px var(--color-node-output-glow)}:root[data-theme=light] .palette-item-description{color:var(--color-text-muted)}:root[data-theme=light] .palette-item-icon.palette-icon-distribution{background-color:var(--color-node-distribution-soft);color:var(--color-node-distribution-icon);border-color:var(--color-node-distribution-border)}:root[data-theme=light] .palette-item-icon.palette-icon-formula{background-color:var(--color-node-formula-soft);color:var(--color-node-formula-icon);border-color:var(--color-node-formula-border)}:root[data-theme=light] .palette-item-icon.palette-icon-output{background-color:var(--color-node-output-soft);color:var(--color-node-output-icon);border-color:var(--color-node-output-border)}:root[data-theme=light] .simulation-node{background:var(--color-bg-panel);border:1px solid var(--color-border-input);box-shadow:0 12px 28px var(--color-shadow-md)}:root[data-theme=light] .simulation-node.selected{box-shadow:0 16px 32px var(--color-shadow-lg)}:root[data-theme=light] .simulation-node-label,:root[data-theme=light] .simulation-node-label-button{color:var(--color-text-primary)}:root[data-theme=light] .simulation-node-label-button:hover,:root[data-theme=light] .simulation-node-label-button:focus-visible{color:var(--color-info-hover)}:root[data-theme=light] .simulation-node-label-input{color:var(--color-text-primary);background:var(--color-bg-elevated);border:1px solid var(--color-border-secondary);box-shadow:0 0 0 1px var(--color-border-secondary)}:root[data-theme=light] .simulation-node-label-input:focus{outline:2px solid var(--color-border-focus)}:root[data-theme=light] .simulation-node-description{color:var(--color-text-tertiary)}:root[data-theme=light] .node-highlighted .simulation-node{border-color:var(--color-node-highlight);border-width:2px;box-shadow:0 0 40px var(--color-node-highlight-glow),0 0 60px var(--color-info-soft),0 0 80px var(--color-info-soft),0 0 100px var(--color-info-soft),0 20px 34px var(--color-shadow-sm)}:root[data-theme=light] .node-dependent-highlighted .simulation-node{border-color:var(--color-node-dependent-highlight);border-width:2px;box-shadow:0 0 40px var(--color-node-dependent-glow),0 0 60px var(--color-warning-soft),0 0 80px var(--color-warning-soft),0 0 100px var(--color-warning-soft),0 20px 34px var(--color-shadow-sm)}:root[data-theme=light] .node-selected-highlighted .simulation-node{border-color:var(--color-node-selected-highlight);border-width:2px;box-shadow:0 0 40px var(--color-node-selected-glow),0 0 60px var(--color-node-distribution-soft),0 0 80px var(--color-node-distribution-soft),0 0 100px var(--color-node-distribution-soft),0 20px 34px var(--color-shadow-sm)}:root[data-theme=light] .node-content{border-top:1px solid var(--color-border-divider)}:root[data-theme=light] .results-meta,:root[data-theme=light] .stats dt,:root[data-theme=light] .stats dd{color:var(--color-text-tertiary)}:root[data-theme=light] .output-metric-card{background:var(--color-bg-panel);border:2px solid var(--color-node-output-border);box-shadow:0 14px 28px var(--color-node-output-glow)}:root[data-theme=light] .output-metric-card:hover{background:var(--color-bg-card-hover);border-color:var(--color-node-output-border);box-shadow:0 16px 32px var(--color-node-output-glow-hover)}:root[data-theme=light] .output-metric-icon{background-color:var(--color-node-output-soft);color:var(--color-node-output-icon);border-color:var(--color-node-output-border)}:root[data-theme=light] .output-metric-name{color:var(--color-text-primary)}:root[data-theme=light] .output-metric-description{color:var(--color-text-tertiary)}:root[data-theme=light] .output-metric-label{color:var(--color-text-muted)}:root[data-theme=light] .output-metric-target-value,:root[data-theme=light] .output-metric-stat-value,:root[data-theme=light] .output-metric-value{color:var(--color-node-output-icon)}:root[data-theme=light] .output-metric-value-container{background:var(--color-node-output-soft);border:2px solid var(--color-node-output-border)}:root[data-theme=light] .output-metric-details{border-top:1px solid var(--color-node-output-soft);border-bottom:1px solid var(--color-node-output-soft)}:root[data-theme=light] .input-distribution-card{background:var(--color-bg-panel);border:1px solid var(--color-border-secondary);box-shadow:0 1px 3px #0000000d}:root[data-theme=light] .input-distribution-card:hover{background:var(--color-bg-card-hover);border-color:var(--color-border-primary);box-shadow:0 2px 4px #00000014}:root[data-theme=light] .input-distribution-name{color:var(--color-text-primary)}:root[data-theme=light] .input-distribution-description{color:var(--color-text-tertiary)}:root[data-theme=light] .input-distribution-header{border-bottom:1px solid var(--color-border-secondary)}:root[data-theme=light] .input-distribution-fields .field span{color:var(--color-text-muted)}:root[data-theme=light] .input-distribution-fields .field input,:root[data-theme=light] .input-distribution-fields .field select{background:var(--color-bg-input);border:1px solid var(--color-border-secondary);color:var(--color-text-primary)}:root[data-theme=light] .input-distribution-fields .field input:focus,:root[data-theme=light] .input-distribution-fields .field select:focus{border-color:var(--color-node-distribution-border);background:var(--color-bg-input-focus)}:root[data-theme=light] .inputs-sidebar{border-right:1px solid var(--color-border-primary)}:root[data-theme=light] .settings-button{background:var(--color-bg-panel);border-color:var(--color-border-button);color:var(--color-text-primary)}:root[data-theme=light] .settings-button:hover{background:var(--color-bg-elevated);border-color:var(--color-border-secondary);box-shadow:0 4px 12px var(--color-shadow-md)}:root[data-theme=light] .settings-modal-overlay{background:var(--color-bg-overlay)}:root[data-theme=light] .settings-modal{background:var(--color-bg-panel);border:1px solid var(--color-border-primary);box-shadow:0 26px 60px var(--color-shadow-lg)}:root[data-theme=light] .settings-modal-header h2{color:var(--color-text-primary)}:root[data-theme=light] .settings-modal-close{color:var(--color-text-muted)}:root[data-theme=light] .settings-section h3{border-bottom:1px solid var(--color-border-divider);color:var(--color-text-primary)}:root[data-theme=light] .settings-modal-footer{border-top:1px solid var(--color-border-divider);padding-top:1rem}:root[data-theme=light] .assistant-form textarea{box-shadow:inset 0 0 0 1px var(--color-border-primary)}:root[data-theme=light] .assistant-form button{box-shadow:0 12px 18px var(--color-button-primary-shadow-hover)}:root[data-theme=light] .assistant-send-button{border-color:var(--color-button-send-border)!important;background:var(--color-button-send-bg)!important;color:var(--color-button-send-text)!important;box-shadow:none}:root[data-theme=light] .assistant-send-button:hover:not(:disabled){background:var(--color-button-send-hover-bg)!important;border-color:var(--color-button-send-hover-border)!important;color:var(--color-button-send-hover-text)!important}:root[data-theme=light] .assistant-send-button:active:not(:disabled){background:var(--color-info-active-bg)!important}:root[data-theme=light] .assistant-send-button:disabled{border-color:var(--color-button-send-disabled-border)!important;color:var(--color-button-send-disabled-text)!important}:root[data-theme=light] .status{color:var(--color-info-hover)}:root[data-theme=light] .error{color:var(--color-error-critical)}:root[data-theme=light] .node-search-input{background:var(--color-bg-input);border:1px solid var(--color-border-input);color:var(--color-text-primary);box-shadow:none}:root[data-theme=light] .node-search-input::placeholder{color:var(--color-text-placeholder)}:root[data-theme=light] .node-search-input:focus{border-color:var(--color-border-focus);background:var(--color-bg-input-focus);box-shadow:0 0 0 3px var(--color-info-soft)}:root[data-theme=light] .node-search-run-button{border-color:var(--color-button-send-border);background:var(--color-button-send-bg);color:var(--color-button-send-text)}:root[data-theme=light] .node-search-run-button:hover:not(:disabled){background:var(--color-button-send-hover-bg);border-color:var(--color-button-send-hover-border);color:var(--color-button-send-hover-text)}:root[data-theme=light] .node-search-run-button:active:not(:disabled){background:var(--color-info-active-bg)}:root[data-theme=light] .node-search-run-button:disabled{border-color:var(--color-button-send-disabled-border);color:var(--color-button-send-disabled-text)}:root[data-theme=light] .node-search-dropdown{background:var(--color-bg-panel);border:1px solid var(--color-border-primary);box-shadow:0 18px 36px var(--color-shadow-lg)}:root[data-theme=light] .node-search-item{color:var(--color-text-secondary)}:root[data-theme=light] .node-search-item:hover,:root[data-theme=light] .node-search-item.active{background:var(--color-bg-elevated)}:root[data-theme=light] .node-search-item-description{color:var(--color-text-muted)}:root[data-theme=light] .histogram-selection{fill:var(--color-info-soft);stroke:var(--color-info)}:root[data-theme=light] .histogram-selection-stats{background:var(--color-bg-panel);border:1px solid var(--color-border-secondary);box-shadow:0 8px 20px var(--color-shadow-sm)}:root[data-theme=light] .histogram-selection-stats h4{color:var(--color-info)}:root[data-theme=light] .histogram-selection-stats .stat-label{color:var(--color-text-tertiary)}:root[data-theme=light] .histogram-selection-title{color:var(--color-info)}:root[data-theme=light] .histogram-selection-grid{color:var(--color-text-tertiary)}:root[data-theme=light] .formula-autocomplete{background:var(--color-bg-panel);border:1px solid var(--color-border-input);box-shadow:0 8px 24px var(--color-shadow-sm)}:root[data-theme=light] .formula-autocomplete-item{color:var(--color-text-primary)}:root[data-theme=light] .formula-autocomplete-item:hover,:root[data-theme=light] .formula-autocomplete-item.selected{background:var(--color-node-distribution);color:var(--color-text-primary)}:root[data-theme=light] .unit-autocomplete-suggestions{background-color:var(--color-bg-card);border:1px solid var(--color-border-tertiary);box-shadow:0 4px 12px var(--color-shadow-md)}:root[data-theme=light] .unit-suggestion{color:var(--color-text-primary)}:root[data-theme=light] .unit-suggestion:hover{background-color:var(--color-node-distribution-soft);color:var(--color-text-primary)}:root[data-theme=light] .unit-suggestion.selected{background-color:var(--color-node-distribution);color:var(--color-text-primary)}:root[data-theme=light] .unit-suggestion-create-icon{background-color:var(--color-success-soft);color:var(--color-success)}:root[data-theme=light] .unit-suggestion-create-description{color:var(--color-success)}:root[data-theme=light] .unit-suggestion.selected .unit-suggestion-create-icon{background-color:var(--color-success);color:#fff}:root[data-theme=light] .unit-suggestion.selected .unit-suggestion-create-description{color:#fff}:root[data-theme=light] .formula-autocomplete-create-icon{background-color:var(--color-success-soft);color:var(--color-success)}:root[data-theme=light] .formula-autocomplete-create-description{color:var(--color-success)}:root[data-theme=light] .formula-autocomplete-item.selected .formula-autocomplete-create-icon{background-color:var(--color-success);color:#fff}:root[data-theme=light] .formula-autocomplete-item.selected .formula-autocomplete-create-description{color:#fff}:root[data-theme=light] .version-card{background:var(--color-bg-panel);border-color:var(--color-border-primary);box-shadow:0 4px 12px var(--color-shadow-sm)}:root[data-theme=light] .version-card:hover{border-color:var(--color-border-secondary);box-shadow:0 6px 16px var(--color-shadow-md)}:root[data-theme=light] .version-card.selected{border-color:var(--color-info);background:var(--color-info-soft)}:root[data-theme=light] .version-header h3{color:var(--color-text-primary)}:root[data-theme=light] .version-date{color:var(--color-text-muted)}:root[data-theme=light] .version-description{color:var(--color-text-tertiary)}.workspace-top-controls{position:absolute;top:12px;left:12px;z-index:5;display:flex;gap:12px;align-items:center}.workspace-top-utilities{display:flex;align-items:center;gap:.75rem}.auto-save-indicator{padding:.35rem .75rem;border-radius:9999px;font-size:.85rem;font-weight:500;color:var(--color-text-secondary);background:var(--color-bg-overlay);border:1px solid var(--color-message-border);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);transition:all .2s ease;min-width:130px;text-align:center}.auto-save-indicator.saved{background:var(--color-success-bg);border-color:var(--color-success-border);color:var(--color-success)}.auto-save-indicator.saving{background:var(--color-info-active-bg);border-color:var(--color-info-border);color:var(--color-info)}.auto-save-indicator.error{background:var(--color-error-bg);border-color:var(--color-error-border);color:var(--color-error)}:root[data-theme=light] .auto-save-indicator{background:var(--color-bg-elevated);border-color:var(--color-message-border);color:var(--color-text-primary)}:root[data-theme=light] .auto-save-indicator.saved{background:var(--color-success-bg);border-color:var(--color-success-border);color:var(--color-success)}:root[data-theme=light] .auto-save-indicator.saving{background:var(--color-info-active-bg);border-color:var(--color-info-border);color:var(--color-info-hover)}:root[data-theme=light] .auto-save-indicator.error{background:var(--color-error-bg);border-color:var(--color-error-border);color:var(--color-error-critical)}:root[data-theme=light] .auto-save-indicator.viewing-only{background:var(--color-warning-bg);border-color:var(--color-warning-border);color:var(--color-warning)}.version-history-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--color-bg-overlay);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);display:flex;justify-content:flex-end;z-index:1200}.version-history-panel{width:380px;max-width:90vw;height:100%;background:var(--color-bg-overlay-dark);border-left:1px solid var(--color-message-border);box-shadow:-24px 0 48px var(--color-shadow-xl);padding:1.5rem;display:flex;flex-direction:column;gap:1rem}.version-history-header{display:flex;align-items:center;justify-content:space-between;gap:1rem}.version-history-header h2{margin:0;font-size:1.1rem;font-weight:600;color:var(--color-text-primary)}.version-history-close{background:transparent;border:none;color:var(--color-text-tertiary);cursor:pointer;font-size:1.5rem;line-height:1;padding:0;transition:color .2s ease}.version-history-close:hover{color:var(--color-text-primary)}.version-history-content{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:.75rem;padding-right:.25rem}.version-history-item{display:flex;align-items:flex-start;gap:1rem;padding:1rem;border-radius:12px;border:1px solid var(--color-message-border);background:var(--color-bg-overlay);box-shadow:inset 0 1px 0 var(--color-message-border)}.version-history-item.current{border-color:var(--color-info);background:var(--color-info-bg)}.version-history-item-main{flex:1;display:flex;flex-direction:column;gap:.35rem}.version-history-item-title{font-size:.95rem;font-weight:600;color:var(--color-text-primary)}.version-history-item-meta{display:flex;align-items:center;gap:.4rem;font-size:.8rem;color:var(--color-text-tertiary)}.version-history-dot{color:var(--color-text-muted)}.version-history-item-description{margin:0;font-size:.8rem;color:var(--color-text-label)}.version-history-item-actions{display:flex;flex-direction:column;align-items:flex-end;gap:.5rem}.version-history-item-actions .btn{font-size:.8rem;padding:.35rem .75rem}.version-history-current-label{font-size:.75rem;font-weight:600;color:var(--color-info);background:var(--color-info-bg);border:1px solid var(--color-info-border);border-radius:9999px;padding:.25rem .6rem}.version-history-empty{text-align:center;color:var(--color-text-tertiary);font-size:.9rem;padding:2rem 1rem}.version-history-empty-hint{margin-top:.35rem;color:var(--color-text-muted);font-size:.8rem}:root[data-theme=light] .version-history-overlay{background:var(--color-bg-overlay)}:root[data-theme=light] .version-history-panel{background:var(--color-bg-overlay-dark);border-left:1px solid var(--color-border-overlay);box-shadow:-24px 0 48px var(--color-shadow-xl)}:root[data-theme=light] .version-history-header h2{color:var(--color-text-primary)}:root[data-theme=light] .version-history-item{background:var(--color-bg-elevated);border-color:var(--color-message-border)}:root[data-theme=light] .version-history-item.current{background:var(--color-info-bg);border-color:var(--color-info-border)}:root[data-theme=light] .version-history-item-title{color:var(--color-text-primary)}:root[data-theme=light] .version-history-item-description{color:var(--color-text-label)}:root[data-theme=light] .version-history-current-label{color:var(--color-info-hover);background:var(--color-info-bg);border-color:var(--color-info-border)}.workspace-controls{bottom:var(--workspace-control-offset);left:var(--workspace-control-offset)}.workspace-controls .react-flow__controls-button svg{width:100%;height:100%}.tidy-layout-button{position:absolute;bottom:12px;left:12px;z-index:5;display:flex;align-items:center;justify-content:center;gap:0;padding:0 12px;background:var(--color-bg-button-secondary);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--color-border-secondary);border-radius:8px;color:var(--color-text-tertiary);font-size:.9rem;font-weight:500;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 12px var(--color-shadow-sm);height:36px}.tidy-layout-button:hover:not(:disabled){background:var(--color-bg-primary);color:var(--color-text-secondary);border-color:var(--color-border-tertiary)}.tidy-layout-button:active:not(:disabled){transform:translateY(0)}.tidy-layout-button:disabled{opacity:.5;cursor:not-allowed;transform:none}.tidy-icon{display:none}.tidy-button-text{white-space:nowrap;font-size:.9rem}.inputs-panel-toggle{position:absolute;top:50%;left:var(--workspace-control-offset);transform:translateY(-50%);z-index:5;display:flex;align-items:center;gap:.5rem;padding:.875rem 1.25rem;background:var(--color-node-distribution-soft);border:2px solid var(--color-node-distribution-border);border-radius:12px;color:var(--color-node-distribution-hover);font-size:.95rem;font-weight:600;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 12px var(--color-node-distribution-glow)}.inputs-panel-toggle:hover{background:var(--color-node-distribution-glow);border-color:var(--color-node-distribution);box-shadow:0 6px 16px var(--color-node-distribution-glow);transform:translateY(-50%) translate(2px)}.inputs-panel-toggle:active{transform:translateY(-50%) translate(0);box-shadow:0 2px 8px var(--color-node-distribution-glow)}.inputs-panel-toggle.inputs-panel-close{padding:.875rem}.inputs-panel-toggle .icon-20{width:20px;height:20px;flex-shrink:0}.inputs-toggle-text{white-space:nowrap}.outputs-panel-toggle{position:absolute;top:50%;right:var(--workspace-control-offset);transform:translateY(-50%);z-index:5;display:flex;align-items:center;gap:.5rem;padding:.875rem 1.25rem;background:var(--color-node-output-soft);border:2px solid var(--color-node-output-border);border-radius:12px;color:var(--color-node-output-icon);font-size:.95rem;font-weight:600;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 12px var(--color-node-output-glow)}.outputs-panel-toggle:hover{background:var(--color-node-output-glow-hover);border-color:var(--color-node-output);box-shadow:0 6px 16px var(--color-node-output-glow-hover);transform:translateY(-50%) translate(-2px)}.outputs-panel-toggle:active{transform:translateY(-50%) translate(0);box-shadow:0 2px 8px var(--color-node-output-glow)}.outputs-panel-toggle.outputs-panel-close{padding:.875rem}.outputs-panel-toggle .icon-20{width:20px;height:20px;flex-shrink:0}.outputs-toggle-text{white-space:nowrap}.workspace-minimap{bottom:var(--workspace-control-offset);right:var(--workspace-control-offset)}.history-controls{display:flex;gap:4px;background:var(--color-bg-button-secondary);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--color-border-secondary);border-radius:8px;padding:4px;box-shadow:0 4px 12px var(--color-shadow-sm);height:36px;align-items:center}.history-button{background:transparent;border:none;padding:6px;cursor:pointer;color:var(--color-text-tertiary);display:flex;align-items:center;justify-content:center;border-radius:6px;transition:all .2s ease;height:28px;width:28px}.history-button:hover:not(:disabled){background:var(--color-tab-hover-bg);color:var(--color-text-secondary)}.history-button:disabled{opacity:.3;cursor:not-allowed}.version-manager{position:relative}.version-manager-toggle{background:var(--color-bg-button-secondary);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--color-border-secondary);border-radius:8px;padding:0 12px;cursor:pointer;color:var(--color-text-tertiary);display:flex;align-items:center;gap:8px;font-size:.9rem;font-weight:500;transition:all .2s ease;box-shadow:0 4px 12px 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h3{margin:0;font-size:1rem;color:var(--color-text-primary);font-weight:600}.version-save-button{background:var(--color-node-distribution);color:var(--color-text-primary);border:none;padding:6px 12px;border-radius:6px;cursor:pointer;font-size:.85rem;font-weight:500;transition:all .2s ease}.version-save-button:hover{background:var(--color-node-distribution-hover);transform:translateY(-1px)}.version-save-dialog{background:var(--color-bg-panel);border:1px solid var(--color-border-primary);border-radius:8px;padding:12px;margin-bottom:16px;display:flex;flex-direction:column;gap:8px}.version-save-dialog input,.version-save-dialog textarea{background:var(--color-bg-input);border:1px solid var(--color-border-secondary);color:var(--color-text-secondary);padding:8px 10px;border-radius:6px;font-size:.9rem;font-family:inherit;width:100%}.version-save-dialog input:focus,.version-save-dialog 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.version-item{background:#f8fafc99;border-color:#e2e8f0}:root[data-theme=light] .version-item:hover{background:#f1f5f9cc;border-color:#cbd5e1}:root[data-theme=light] .version-item-header strong{color:var(--color-button-primary-text)}:root[data-theme=light] .version-item-date{color:var(--color-text-muted)}:root[data-theme=light] .version-item-description{color:var(--color-text-tertiary)}:root[data-theme=light] .version-item-stats{color:var(--color-text-muted)}:root[data-theme=light] .version-item-actions button{background:#fff;border-color:#cbd5e1;color:var(--color-text-muted)}:root[data-theme=light] .version-item-actions button:hover{background:#f8fafc;color:var(--color-button-primary-text);border-color:#94a3b8}.auth-container{display:flex;justify-content:center;align-items:center;min-height:calc(100vh - 80px);padding:2rem;background:var(--color-bg-primary)}.auth-card{background:var(--color-bg-panel);border:1px solid 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var(--color-error-border);border-radius:6px;color:var(--color-error-chip);font-size:.9rem}.auth-submit{padding:.875rem;background:var(--color-info);color:var(--color-text-primary);border:none;border-radius:6px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s}.auth-submit:hover:not(:disabled){background:var(--color-info-hover)}.auth-submit:disabled{opacity:.5;cursor:not-allowed}.auth-footer{margin-top:1.5rem;text-align:center;color:var(--color-text-tertiary);font-size:.9rem}.auth-footer a{color:var(--color-info);font-weight:500;text-decoration:none}.auth-footer a:hover{text-decoration:underline}.header-left{display:flex;align-items:center;gap:2rem}.header-right{display:flex;align-items:center;gap:1rem}.user-account-menu{position:relative}.user-account-button{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;border:2px solid 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ease;text-align:left}.user-account-dropdown-item:hover{background:var(--color-tab-hover-bg)}.user-account-dropdown-item:active{background:var(--color-message-bg)}.user-account-dropdown-item-danger{color:var(--color-error)}.user-account-dropdown-item-danger:hover{background:var(--color-error-bg-hover);color:var(--color-error-chip)}.user-account-dropdown-item-icon{width:20px;height:20px;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:currentColor}.user-account-dropdown-item-icon svg{width:16px;height:16px;stroke:currentColor}.user-account-dropdown-item-text{flex:1}.theme-toggle-button{display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;border:1px solid var(--color-message-border);border-radius:8px;background:var(--color-message-bg);color:var(--color-text-label);font-size:1.2rem;cursor:pointer;transition:all .2s 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.user-account-dropdown-item-danger:hover{background:#dc26261a;color:#b91c1c}.btn-secondary.btn-sm{background:var(--color-button-secondary-bg);color:var(--color-button-secondary-text);border:1px solid var(--color-button-secondary-border);box-shadow:0 10px 24px var(--color-button-secondary-shadow)}.btn-secondary.btn-sm:hover:not(:disabled){background:var(--color-bg-button-secondary-hover);border-color:var(--color-button-secondary-border);color:var(--color-text-primary);transform:translateY(-1px);box-shadow:0 8px 18px var(--color-button-primary-shadow-hover)}:root[data-theme=light] .btn-secondary.btn-sm{background:#f1f5f9;color:var(--color-button-primary-text);border:1px solid #cbd5e1;box-shadow:0 6px 16px #94a3b840}:root[data-theme=light] .btn-secondary.btn-sm:hover:not(:disabled){background:#e2e8f0;border-color:#94a3b8;color:var(--color-button-primary-text)}.simulations-container{padding:2rem 3rem;max-width:1400px;margin:0 auto;width:100%;overflow-y:auto;height:100%}.simulations-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:2rem}.simulations-header-left h1{margin:0 0 .5rem;font-size:2rem;color:var(--color-text-primary)}.simulations-subtitle{margin:0;color:var(--color-text-tertiary);font-size:1rem}.create-simulation-btn{padding:.875rem 2rem;font-size:1rem;font-weight:600}.create-simulation-btn.btn-primary{background:var(--color-button-primary-bg);color:var(--color-button-primary-text);border:none;box-shadow:0 12px 28px var(--color-button-primary-shadow);transition:all .2s ease}.create-simulation-btn.btn-primary:hover:not(:disabled){background:var(--color-button-primary-bg);transform:translateY(-2px);box-shadow:0 16px 32px var(--color-button-primary-shadow-hover)}.create-simulation-btn.btn-primary:active:not(:disabled){transform:translateY(0);box-shadow:0 8px 20px var(--color-button-primary-shadow)}:root[data-theme=light] .create-simulation-btn.btn-primary{background:linear-gradient(135deg,#ff5f40,#ff8a4c);color:var(--color-button-primary-text);border:none;box-shadow:0 12px 28px #ff6f4059}:root[data-theme=light] .create-simulation-btn.btn-primary:hover:not(:disabled){background:linear-gradient(135deg,#ff6b4d,#ff9559);box-shadow:0 16px 32px #ff6f4073}.simulations-controls{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;gap:1rem}.search-box{flex:1;max-width:400px}.search-input{width:100%;padding:.75rem 1rem;border:1px solid var(--color-border-primary);border-radius:8px;background:var(--color-bg-panel);color:var(--color-text-secondary);font-size:.95rem}.search-input:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a}.sort-controls{display:flex;align-items:center;gap:.75rem;color:var(--color-text-label);font-size:.9rem}.sort-controls select{padding:.5rem .75rem;border:1px solid var(--color-border-primary);border-radius:6px;background:var(--color-bg-panel);color:var(--color-text-secondary);cursor:pointer}.simulations-list{background:var(--color-bg-panel);border:1px solid var(--color-border-primary);border-radius:12px;overflow:hidden}.simulations-table{width:100%;border-collapse:collapse}.simulations-table thead{background:var(--color-bg-secondary);border-bottom:1px solid var(--color-border-divider)}.simulations-table th{padding:1rem 1.5rem;text-align:left;font-size:.875rem;font-weight:600;color:var(--color-text-label);text-transform:uppercase;letter-spacing:.05em;position:relative}.simulations-table th.sortable{cursor:pointer;-webkit-user-select:none;user-select:none;transition:background-color .2s}.simulations-table th.sortable:hover{background-color:#3b82f60d}.simulations-table th.sortable span{display:inline-flex;align-items:center;gap:.5rem}.simulations-table th .sort-arrow{font-size:.7rem;color:var(--color-text-tertiary);opacity:.5;transition:opacity .2s,color .2s;margin-left:.25rem;display:inline-block;line-height:1}.simulations-table th.sortable:hover .sort-arrow{opacity:.8}.simulations-table th.sortable:active .sort-arrow{opacity:1}.simulations-table th.sortable.sort-active .sort-arrow{color:var(--color-text-label);opacity:1;font-weight:600}.simulation-row{border-bottom:1px solid var(--color-border-divider);cursor:pointer;transition:background .15s}.simulation-row:hover{background:#ffffff08}.simulation-row:last-child{border-bottom:none}.simulation-row td{padding:1.25rem 1.5rem;font-size:.95rem}.sim-name-cell{max-width:400px}.sim-name{font-weight:500;color:var(--color-text-primary);margin-bottom:.25rem}.sim-description{font-size:.875rem;color:var(--color-text-tertiary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.status-toggle{padding:.4rem .875rem;border:none;border-radius:20px;font-size:.85rem;font-weight:500;cursor:pointer;transition:all .2s}.status-toggle.active{background:#22c55e26;color:#4ade80}.status-toggle.inactive{background:var(--color-message-bg);color:var(--color-text-tertiary)}.status-toggle:hover{opacity:.8}.sim-date{color:var(--color-text-tertiary)}.sim-versions{color:var(--color-text-label);font-weight:500}.sim-actions{display:flex;gap:.5rem}.action-btn{padding:.5rem 1rem;border:1px solid var(--color-border-primary);border-radius:6px;background:transparent;color:var(--color-text-label);font-size:.875rem;cursor:pointer;transition:all .2s}.action-btn:hover{background:var(--color-tab-hover-bg);border-color:var(--color-border-tertiary)}.action-btn.action-danger{color:var(--color-error)}.action-btn.action-danger:hover{background:#ef44441a;border-color:#ef44444d}.simulations-footer{padding:1rem 1.5rem;background:var(--color-bg-secondary);border-top:1px solid var(--color-border-divider);text-align:center;color:var(--color-text-tertiary);font-size:.875rem}:root[data-theme=light] .simulations-controls 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