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8px;display:flex;position:relative}.input-node{border-left:2px solid var(--sys-blue)}.output-node{border-left:2px solid var(--sys-purple)}.operator-node{border-left:2px solid var(--sys-orange)}.function-node{border-left:2px solid var(--sys-green)}.variable-node{border-left:2px solid var(--sys-teal)}.condition-node{border-left:2px solid var(--sys-yellow)}.loop-node{border-left:2px solid var(--sys-indigo)}.json-node{border-left:2px solid var(--sys-pink)}.api-node{border-left:2px solid var(--sys-red)}.module-node{border-left:2px solid var(--sys-gray)}.node .node-header{background:var(--node-header-bg);color:var(--label-primary)}.node-oneliner .node-header{border-bottom:none}.node-oneliner .node-header .node-input{background:var(--input-bg);border:1px solid var(--input-border);border-radius:var(--radius-sm);min-width:60px;color:var(--label-primary);font-size:11px;font-family:var(--font-mono);text-transform:none;letter-spacing:0;outline:none;flex:1;padding:2px 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var(--input-border);border-radius:var(--radius-sm);color:var(--label-primary);font-size:11px;font-family:var(--font-mono);outline:none;flex:1;padding:4px 8px}.prop-input:focus{border-color:var(--accent)}.prop-section-title{color:var(--label-tertiary);text-transform:uppercase;letter-spacing:.1em;border-top:1px solid var(--separator);font-size:10px;font-weight:600;font-family:var(--font-mono);margin-top:4px;padding:8px 0 4px}.prop-result{background:var(--input-bg);border:1px solid var(--separator-opaque);border-radius:var(--radius-sm);color:var(--label-primary);font-size:11px;font-family:var(--font-mono);padding:8px;overflow-x:auto}.prop-actions{border-top:1px solid var(--separator);margin-top:12px;padding-top:12px}.btn{border-radius:var(--radius-sm);cursor:pointer;font-size:11px;font-weight:600;font-family:var(--font-mono);text-transform:uppercase;letter-spacing:.04em;border:1px solid #0000;align-items:center;gap:4px;padding:7px 12px;transition:background .15s,color .15s,border-color 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var(--separator-opaque);border-radius:var(--radius-lg);flex-direction:column;width:600px;max-width:95vw;max-height:85vh;display:flex;box-shadow:0 20px 60px #00000080}.modal-header{border-bottom:1px solid var(--separator);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.modal-header h2{letter-spacing:.04em;font-size:14px;font-weight:700;font-family:var(--font-mono)}.modal-close{background:var(--fill-quaternary);border:1px solid var(--separator-opaque);color:var(--label-tertiary);cursor:pointer;border-radius:var(--radius-sm);font-size:14px;font-family:var(--font-mono);padding:4px 8px}.modal-close:hover{color:var(--label-primary);background:var(--fill-tertiary)}.modal-tabs{border-bottom:1px solid var(--separator);display:flex}.modal-tab{color:var(--label-tertiary);font-size:12px;font-family:var(--font-mono);text-transform:uppercase;cursor:pointer;background:0 0;border:none;flex:1;padding:10px;transition:background .15s,color .15s}.modal-tab.active{color:var(--accent);border-bottom:2px solid var(--accent)}.modal-tab:hover{background:var(--fill-quaternary);color:var(--label-primary)}.modal-body{flex-direction:column;flex:1;gap:12px;padding:16px 20px;display:flex;overflow-y:auto}.json-textarea{background:var(--input-bg);border:1px solid var(--input-border);border-radius:var(--radius-sm);width:100%;color:var(--label-primary);font-size:12px;font-family:var(--font-mono);resize:vertical;outline:none;padding:10px}.json-textarea:focus{border-color:var(--accent)}.import-file-row{align-items:center;gap:12px;display:flex}.import-or{color:var(--label-tertiary);font-size:11px}.modal-actions{justify-content:flex-end;gap:8px;display:flex}.modal-message{border-top:1px solid var(--separator);color:var(--label-secondary);font-size:13px;font-family:var(--font-mono);padding:10px 20px}.empty-message,.empty-state{color:var(--label-tertiary);text-align:center;font-size:11px;font-family:var(--font-mono);padding:16px 14px}.group-node-container{border:1px dashed var(--sys-gray3);background:var(--fill-quaternary);border-radius:var(--radius-md);opacity:.9;width:100%;height:100%;position:relative}.group-node-container .group-header{color:var(--label-tertiary);text-transform:uppercase;letter-spacing:.08em;font-size:9px;font-weight:600;font-family:var(--font-mono);background:var(--fill-quaternary);border-top:1px solid var(--separator);border-radius:0 0 var(--radius-md) var(--radius-md);align-items:center;gap:5px;padding:3px 8px;display:flex;position:absolute;bottom:0;left:0;right:0}.group-color-dot{flex-shrink:0;width:6px;height:6px}.group-name-input{color:var(--label-tertiary);font-size:9px;font-family:var(--font-mono);letter-spacing:.06em;text-transform:uppercase;background:0 0;border:none;outline:none;width:60px;padding:0;font-weight:600}.group-name-input::placeholder{color:var(--label-quaternary)}.group-color-select{border:1px solid var(--separator-opaque);color:var(--label-quaternary);font-size:8px;font-family:var(--font-mono);cursor:pointer;background:0 0;border-radius:0;outline:none;padding:0 3px}.examples-panel{padding:8px;overflow-y:auto}.example-item{border:1px solid var(--separator-opaque);cursor:pointer;border-radius:var(--radius-sm);margin-bottom:6px;padding:10px 12px;transition:background .15s}.example-item:hover{background:var(--fill-quaternary)}.example-title{color:var(--label-primary);font-size:12px;font-weight:700;font-family:var(--font-mono);margin-bottom:4px}.example-meta{align-items:center;gap:8px;margin-bottom:4px;display:flex}.difficulty-badge{border:1px solid var(--label-tertiary);color:var(--label-secondary);text-transform:uppercase;font-size:9px;font-family:var(--font-mono);letter-spacing:.05em;border-radius:var(--radius-sm);padding:1px 6px}.difficulty-badge.easy{border-color:var(--sys-green);color:var(--sys-green)}.difficulty-badge.medium{border-color:var(--sys-yellow);color:var(--sys-yellow)}.difficulty-badge.hard{border-color:var(--sys-red);color:var(--sys-red)}.example-tags{flex-wrap:wrap;gap:4px;display:flex}.example-tag{border:1px solid var(--separator-opaque);color:var(--label-tertiary);font-size:9px;font-family:var(--font-mono);border-radius:var(--radius-sm);padding:1px 4px}.example-desc{color:var(--label-tertiary);margin-bottom:6px;font-size:10px}.example-actions{gap:6px;display:flex}.challenge-panel{padding:8px;overflow-y:auto}.challenge-active{border:1px solid var(--separator-opaque);border-radius:var(--radius-sm);margin-bottom:8px;padding:12px}.challenge-active-title{color:var(--label-primary);font-size:13px;font-weight:700;font-family:var(--font-mono);text-transform:uppercase;margin-bottom:6px}.challenge-active-desc{color:var(--label-secondary);margin-bottom:8px;font-size:11px}.challenge-constraints{color:var(--label-tertiary);font-size:10px;font-family:var(--font-mono);margin-bottom:8px}.challenge-constraints li{margin-bottom:2px;margin-left:16px}.challenge-test-results{margin-top:8px}.test-result-item{font-size:10px;font-family:var(--font-mono);align-items:center;gap:8px;margin-bottom:2px;padding:4px 8px;display:flex}.test-pass{color:var(--sys-green)}.test-fail{color:var(--sys-red);border-left:2px solid var(--sys-red);padding-left:6px}.challenge-item{border:1px solid var(--separator-opaque);cursor:pointer;border-radius:var(--radius-sm);margin-bottom:6px;padding:10px 12px;transition:background 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li{margin-bottom:2px}.solutions-panel{padding:8px;overflow-y:auto}.solution-save-form,.save-form{background:var(--bg-primary);border:1px solid var(--separator-opaque);border-radius:var(--radius-sm);flex-direction:column;gap:6px;margin-bottom:10px;padding:10px;display:flex}.solution-save-form input,.solution-save-form textarea,.save-form .input-field{background:var(--input-bg);border:1px solid var(--input-border);border-radius:var(--radius-sm);color:var(--label-primary);font-size:11px;font-family:var(--font-mono);outline:none;padding:6px 8px}.solution-save-form textarea{resize:vertical;min-height:50px}.solution-save-form input:focus,.solution-save-form textarea:focus{border-color:var(--accent)}.solution-item{border:1px solid var(--separator-opaque);border-radius:var(--radius-sm);margin-bottom:6px;padding:10px 12px}.solution-title,.solution-name{color:var(--label-primary);font-size:12px;font-weight:700;font-family:var(--font-mono);margin-bottom:2px}.solution-date{color:var(--label-tertiary);font-size:9px;font-family:var(--font-mono);margin-bottom:4px}.solution-challenge{color:var(--label-tertiary);font-size:9px;font-family:var(--font-mono);margin-top:2px}.solution-notes{color:var(--label-secondary);background:var(--fill-quaternary);border-left:2px solid var(--separator-opaque);white-space:pre-wrap;font-size:10px;font-family:var(--font-mono);border-radius:0 var(--radius-sm) var(--radius-sm) 0;margin-top:4px;padding:4px 6px}.solution-actions{gap:6px;margin-top:6px;display:flex}.solution-header{justify-content:space-between;align-items:center;display:flex}.solution-list{padding:4px 0}.solutions-cleanup{border-top:1px solid var(--separator);margin-top:12px;padding-top:12px}.edit-notes{flex-direction:column;gap:4px;margin-top:4px;display:flex}.clear-btn{color:var(--label-secondary);margin:8px 14px}.input-field{background:var(--input-bg);border:1px solid var(--input-border);border-radius:var(--radius-sm);width:100%;color:var(--label-primary);font-size:11px;font-family:var(--font-mono);padding:6px 8px}.input-field:focus{border-color:var(--accent);outline:none}.visualizer-container{background:var(--bg-primary);border-left:1px solid var(--separator);flex-direction:column;flex:1;display:flex;overflow-y:auto}.visualizer-header{color:var(--label-secondary);border-bottom:1px solid var(--separator);background:var(--panel-header-bg);letter-spacing:.1em;text-transform:uppercase;font-size:11px;font-weight:600;font-family:var(--font-mono);padding:10px 14px}.visualizer-grid{background:var(--separator-opaque);flex:1;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1px;padding:1px;display:grid}.viz-card{background:var(--bg-secondary);flex-direction:column;gap:8px;padding:12px;display:flex}.viz-card-title{color:var(--label-tertiary);text-transform:uppercase;letter-spacing:.1em;font-size:9px;font-weight:600;font-family:var(--font-mono);border-bottom:1px solid var(--separator-opaque);padding-bottom:6px}.viz-card-value{color:var(--label-primary);font-size:18px;font-weight:700;font-family:var(--font-mono);text-align:center;padding:8px 0}.gauge-widget{flex-direction:column;align-items:center;gap:4px;display:flex}.gauge-widget svg{width:120px;height:70px}.gauge-label{color:var(--label-primary);font-size:16px;font-weight:700;font-family:var(--font-mono)}.led-widget{justify-content:center;align-items:center;gap:8px;padding:8px;display:flex}.led-indicator{border:2px solid var(--separator-opaque);border-radius:50%;width:16px;height:16px}.led-indicator.on{background:var(--sys-green);border-color:var(--sys-green)}.led-indicator.off{background:var(--fill-tertiary);border-color:var(--separator-opaque)}.led-label{color:var(--label-secondary);font-size:12px;font-family:var(--font-mono);text-transform:uppercase}.numeric-display{color:var(--label-primary);font-size:24px;font-weight:700;font-family:var(--font-mono);text-align:center;background:var(--input-bg);border:1px solid var(--separator-opaque);letter-spacing:.1em;border-radius:var(--radius-sm);padding:12px 8px}.bar-chart-widget{align-items:flex-end;gap:2px;height:80px;padding:4px;display:flex}.bar-chart-bar{background:var(--accent);flex:1;min-width:4px;transition:height .2s}.bar-chart-labels{color:var(--label-tertiary);font-size:8px;font-family:var(--font-mono);gap:2px;display:flex}.waveform-widget svg{width:100%;height:60px}.waveform-widget polyline{fill:none;stroke:var(--label-primary);stroke-width:1.5px}.waveform-widget .waveform-grid line{stroke:var(--separator-opaque);stroke-width:.5px}.text-display{color:var(--label-primary);font-size:12px;font-family:var(--font-mono);background:var(--input-bg);border:1px solid var(--separator-opaque);word-break:break-all;white-space:pre-wrap;border-radius:var(--radius-sm);padding:8px}.table-widget{width:100%;font-size:10px;font-family:var(--font-mono);border-collapse:collapse}.table-widget th,.table-widget td{border:1px solid var(--separator-opaque);text-align:left;padding:4px 8px}.table-widget th{background:var(--fill-quaternary);color:var(--label-tertiary);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.table-widget td{color:var(--label-secondary)}.viz-panel{width:480px;min-width:340px}.viz-editor{background:var(--bg-primary);flex-direction:column;height:100%;display:flex}.viz-palette{border-bottom:1px solid var(--separator-opaque);flex-wrap:wrap;gap:4px;padding:6px;display:flex}.viz-palette-btn{background:var(--fill-quaternary);border:1px solid var(--separator-opaque);color:var(--label-secondary);cursor:pointer;font-size:10px;font-family:var(--font-mono);border-radius:var(--radius-sm);padding:2px 8px}.viz-palette-btn:hover{border-color:var(--accent);color:var(--accent)}.viz-canvas{flex:1;min-height:200px}.viz-output-node,.viz-widget-node{background:var(--node-bg);border:1px solid var(--separator-opaque);min-width:120px;font-family:var(--font-mono);color:var(--label-secondary);border-radius:var(--radius-sm);padding:6px 10px;font-size:11px}.viz-output-label{color:var(--label-secondary);font-size:10px}.viz-output-preview{color:var(--label-primary);word-break:break-all;margin-top:2px;font-size:10px}.viz-widget-body{max-width:180px}.viz-widget-body .widget{border:none;padding:4px}.viz-widget-body .widget-label{font-size:9px}.visualizer-dashboard{background:var(--bg-primary);flex-direction:column;flex:1;display:flex;overflow-y:auto}.widget{background:var(--bg-secondary);border-radius:var(--radius-sm);flex-direction:column;gap:6px;padding:12px;display:flex}.widget-label{color:var(--label-tertiary);text-transform:uppercase;letter-spacing:.1em;font-size:9px;font-weight:600;font-family:var(--font-mono);border-bottom:1px solid var(--separator-opaque);padding-bottom:4px}.widget-value{color:var(--label-primary);font-size:14px;font-weight:700;font-family:var(--font-mono);text-align:center}.gauge-svg{width:120px;height:70px}.barchart-svg,.waveform-svg{width:100%;height:60px}.text-display-content{color:var(--label-primary);font-size:11px;font-family:var(--font-mono);background:var(--input-bg);border:1px solid var(--separator-opaque);word-break:break-all;white-space:pre-wrap;border-radius:var(--radius-sm);max-height:120px;margin:0;padding:6px;overflow-y:auto}.table-display{width:100%;font-size:10px;font-family:var(--font-mono);border-collapse:collapse}.table-display th,.table-display td{border:1px solid var(--separator-opaque);text-align:left;padding:3px 6px}.table-display th{background:var(--fill-quaternary);color:var(--label-tertiary);text-transform:uppercase;font-weight:600}.table-display td{color:var(--label-secondary)}.react-flow__background{background:var(--bg-primary)!important}.react-flow__controls{border:1px solid var(--separator-opaque);border-radius:var(--radius-sm);box-shadow:none;overflow:hidden}.react-flow__controls-button{background:var(--bg-secondary)!important;border-bottom:1px solid var(--separator-opaque)!important;color:var(--label-secondary)!important;fill:var(--label-secondary)!important;border-radius:0!important}.react-flow__controls-button:hover{background:var(--fill-tertiary)!important;fill:var(--label-primary)!important}.react-flow__minimap{background:var(--bg-secondary)!important;border:1px solid var(--separator-opaque)!important;border-radius:var(--radius-sm)!important}.react-flow__edge-path{stroke:var(--sys-gray3);stroke-width:1px}.react-flow__edge.animated .react-flow__edge-path{stroke:var(--sys-gray)}.react-flow__handle{background:var(--sys-gray);border:2px solid var(--node-bg);border-radius:50%;width:10px;height:10px}.react-flow__handle:hover{background:var(--accent)}