:root {
  --ink: #151221;
  --ink-2: #100e1a;
  --panel: #1f1b30;
  --panel-2: #292340;
  --line: #372f52;
  --line-soft: #2a2440;
  --text: #f1edf8;
  --muted: #9a90b4;
  --faint: #6e6690;
  --v0: #6e7cf2;
  --v1: #f4b45c;
  --action: #6e7cf2;
  --action-2: #5a68e0;
  --action-ink: #0e0b18;
  --danger: #e8688b;
  --v0-a12: rgb(110 124 242 / 12%);
  --v0-a24: rgb(110 124 242 / 24%);
  --v0-a40: rgb(110 124 242 / 40%);
  --radius: 10px;
  --radius-sm: 6px;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body, #app { width: 100%; height: 100%; margin: 0; }
body { overflow: hidden; background: var(--ink); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", sans-serif; }
button, input, select { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--v0); outline-offset: 2px; }
[hidden] { display: none !important; }

.python-loader { position: fixed; z-index: 5000; inset: 0; display: grid; place-content: center; justify-items: center; gap: 11px; background: var(--ink); color: var(--text); text-align: center; transition: opacity .2s ease, visibility .2s ease; }
.python-loader p { margin: 0; font-weight: 650; }
.python-loader small { color: var(--muted); font: 12px var(--mono); }
.python-loader.is-ready { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-mark { display: flex; gap: 6px; height: 19px; align-items: center; }
.loader-mark span { width: 9px; height: 9px; border-radius: 50%; background: var(--v0); animation: loader-pulse 1s ease-in-out infinite; }
.loader-mark span:nth-child(2) { animation-delay: .14s; background: #a18ae4; }.loader-mark span:nth-child(3) { animation-delay: .28s; background: var(--v1); }
@keyframes loader-pulse { 0%,100% { transform: scale(.72); opacity: .55; } 50% { transform: scale(1); opacity: 1; } }

.app-container { display: flex; flex-direction: column; width: 100vw; height: 100vh; overflow: hidden; background: var(--ink); }
.view-tabs-bar { display: flex; gap: 4px; padding: 10px 16px 0; background: var(--ink); }
.view-tab { padding: 9px 20px; border: 0; border-bottom: 2px solid transparent; background: transparent; color: var(--muted); font-size: 14px; font-weight: 600; letter-spacing: .2px; cursor: pointer; transition: color .15s ease, border-color .15s ease; }
.view-tab:hover, .view-tab.active { color: var(--text); }.view-tab.active { border-bottom-color: var(--v0); }

.tabs-bar { border-bottom: 1px solid var(--line); background: var(--ink); }
.tabs-list { display: flex; align-items: center; gap: 6px; overflow-x: auto; overflow-y: hidden; padding: 8px 16px; }
.tabs-list::-webkit-scrollbar { height: 4px; }.tabs-list::-webkit-scrollbar-track { background: var(--ink-2); }.tabs-list::-webkit-scrollbar-thumb { border-radius: 2px; background: var(--line); }
.tab, .tab-new { min-width: 100px; border-radius: 999px; font-size: 13px; cursor: pointer; white-space: nowrap; transition: all .15s ease; }
.tab { display: flex; align-items: center; gap: 8px; padding: 6px 14px; border: 1px solid var(--line-soft); background: var(--panel); color: var(--muted); font-weight: 500; }
.tab:hover { border-color: var(--v0); color: var(--text); }.tab.active { border-color: var(--v0); background: var(--v0-a12); color: var(--text); }.tab-name { flex: 1; }
.tab-close { display: inline-grid; width: 18px; height: 18px; place-items: center; border: 0; border-radius: 50%; background: transparent; color: var(--faint); cursor: pointer; }.tab-close:hover { background: rgb(232 104 139 / 18%); color: var(--danger); }
.tab-new { min-width: auto; padding: 6px 14px; border: 1px dashed var(--line); background: transparent; color: var(--muted); font-weight: 600; }.tab-new:hover { border-color: var(--v0); color: var(--v0); }.tab-new:active { transform: scale(.96); }

.main-content { display: flex; min-height: 0; flex: 1; overflow: hidden; }
.sidebar { display: flex; flex: 0 0 280px; flex-direction: column; gap: 15px; overflow-y: auto; padding: 20px; border-right: 1px solid var(--line); background: var(--panel); }
.sidebar::-webkit-scrollbar, .sweep-panel::-webkit-scrollbar { width: 8px; }.sidebar::-webkit-scrollbar-track, .sweep-panel::-webkit-scrollbar-track { background: var(--ink-2); }.sidebar::-webkit-scrollbar-thumb, .sweep-panel::-webkit-scrollbar-thumb { border-radius: 4px; background: var(--line); }.sidebar::-webkit-scrollbar-thumb:hover, .sweep-panel::-webkit-scrollbar-thumb:hover { background: var(--v0); }
.sidebar h1 { margin: 0 0 6px; padding-bottom: 12px; border-bottom: 1px solid var(--line); color: var(--text); font-size: 15px; font-weight: 600; letter-spacing: .3px; }
.node-item { cursor: grab; transition: transform .2s ease; }.node-item:active { cursor: grabbing; transform: scale(.95); }
.node-preview-circle { display: grid; width: 76px; height: 76px; margin: 0 auto; place-items: center; border: 2px solid rgb(255 255 255 / 18%); border-radius: 50%; background: var(--v0); box-shadow: 0 6px 18px rgb(0 0 0 / 45%); color: var(--action-ink); font: 700 14px var(--mono); transition: all .2s ease; }.node-item:hover .node-preview-circle { transform: translateY(-2px) scale(1.04); box-shadow: 0 8px 22px var(--v0-a40); }
.graph-type-selector { margin-top: 12px; padding: 14px; border: 1px solid var(--v0-a24); border-radius: var(--radius-sm); background: var(--v0-a12); }.checkbox-label { display: flex; align-items: center; gap: 10px; color: var(--text); font-size: 14px; font-weight: 600; cursor: pointer; }.checkbox-label input { width: 18px; height: 18px; accent-color: var(--v0); cursor: pointer; }.checkbox-info { margin: 8px 0 0; padding-top: 8px; border-top: 1px solid var(--v0-a24); color: var(--muted); font-size: 12px; line-height: 1.4; }
.sidebar-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; padding-top: 16px; border-top: 1px solid var(--line); }.quiet-btn { padding: 10px 8px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: transparent; color: var(--muted); font-size: 13px; font-weight: 600; cursor: pointer; transition: all .15s ease; }.quiet-btn:hover { border-color: var(--v0); background: var(--panel-2); color: var(--text); }.danger-quiet:hover { border-color: var(--danger); background: rgb(232 104 139 / 12%); color: var(--danger); }.quiet-btn:active { transform: scale(.96); }

.simulation-section { margin-top: 16px; padding: 18px; border: 1px solid var(--v0-a24); border-radius: var(--radius); background: var(--v0-a12); }.simulation-section h2 { margin: 0 0 15px; color: var(--v0); font-size: 12px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; }.algorithm-selector { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; padding: 12px; border: 1px solid var(--line-soft); border-radius: var(--radius-sm); background: rgb(0 0 0 / 18%); }.field-label { color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .6px; text-transform: uppercase; }.algorithm-select, .agreed-input { width: 100%; padding: 9px 10px; border: 1px solid var(--line); border-radius: var(--radius-sm); outline: none; background: var(--panel-2); color: var(--text); font-size: 13px; }.agreed-input { font-family: var(--mono); }.algorithm-select:focus, .agreed-input:focus { border-color: var(--v0); }.agreed-input-wrapper { display: flex; flex-direction: column; gap: 6px; padding-top: 8px; border-top: 1px solid var(--line-soft); }
.simulate-btn, .sweep-run-btn, .sweep-stop-btn { width: 100%; border: 0; border-radius: var(--radius-sm); font-size: 14px; font-weight: 700; cursor: pointer; transition: all .15s ease; }.simulate-btn { margin-bottom: 10px; padding: 12px 20px; background: var(--action); color: var(--action-ink); }.simulate-btn:hover:not(:disabled), .sweep-run-btn:hover:not(:disabled) { transform: translateY(-1px); background: var(--action-2); box-shadow: 0 6px 18px var(--v0-a40); }.simulate-btn:disabled, .sweep-run-btn:disabled { opacity: .4; cursor: not-allowed; }.secondary-btn, .reset-simulation-btn { width: 100%; margin-bottom: 8px; padding: 10px 20px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: transparent; font-size: 13px; font-weight: 600; cursor: pointer; transition: all .15s ease; }.secondary-btn { color: var(--muted); }.secondary-btn:hover { border-color: var(--v0); background: var(--panel-2); color: var(--text); }.reset-simulation-btn { border-color: rgb(232 104 139 / 40%); color: var(--danger); }.reset-simulation-btn:hover { border-color: var(--danger); background: rgb(232 104 139 / 12%); }.simulation-status { margin-top: 10px; padding: 10px 12px; border: 1px solid var(--line-soft); border-radius: var(--radius-sm); background: rgb(0 0 0 / 18%); }.simulation-status p { margin: 0; color: var(--text); font-size: 12px; text-align: center; }
.info { margin-top: 16px; padding: 15px; border: 1px solid var(--line-soft); border-radius: var(--radius-sm); background: rgb(255 255 255 / 2%); }.info p { margin: 0 0 10px; color: var(--text); font-size: 13px; font-weight: 600; }.info ul { margin: 0; padding: 0; list-style: none; }.info li { position: relative; padding: 5px 0 5px 18px; color: var(--muted); font-size: 12px; line-height: 1.4; }.info li::before { position: absolute; left: 0; content: "→"; color: var(--v0); font-weight: 700; }.shift-indicator { margin-top: 15px; padding: 11px; border: 1px solid var(--v0); border-radius: var(--radius-sm); background: var(--v0-a12); color: var(--text); font-size: 13px; font-weight: 600; text-align: center; animation: pulse 1.6s ease-in-out infinite; }@keyframes pulse { 0%,100%{opacity:1}50%{opacity:.7} }

.canvas-container { position: relative; min-width: 0; flex: 1; overflow: hidden; background: var(--ink-2); }.canvas-container.shift-mode { cursor: crosshair; }.graph-canvas { display: block; width: 100%; height: 100%; touch-action: none; }.canvas-grid { pointer-events: none; }.graph-node { cursor: move; }.graph-node text { font: 700 14px var(--mono); pointer-events: none; }.shift-mode .graph-node { cursor: crosshair; }.graph-node:hover .node-circle { filter: drop-shadow(0 0 0 3px var(--v0-a40)); }.edge-path { fill: none; stroke: #6c6690; stroke-linecap: round; stroke-width: 3; }.edge-animated .edge-path { stroke-dasharray: 9 7; animation: edge-flow .65s linear infinite; }@keyframes edge-flow { to { stroke-dashoffset: -16; } }.edge-path.is-selected { stroke: var(--v0); stroke-width: 4; }.edge-path.is-updated { stroke: var(--v1); stroke-width: 4; }.edge-path.is-delivered { stroke: #7a6e9e; stroke-width: 4; }.edge-path.is-idle { stroke: #413a5e; stroke-width: 1; }.edge-anchor-source { fill: #ff6b6b; stroke: #fff; stroke-width: 1.5px; }.edge-anchor-target { fill: #4ecdc4; stroke: #fff; stroke-width: 1.5px; }.edge-label rect { fill: #2a2a2a; stroke: #667eea; }.edge-label text { fill: #fff; font: 700 12px var(--mono); pointer-events: none; }
.canvas-controls { position: absolute; bottom: 18px; left: 18px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--panel); box-shadow: 0 4px 12px rgb(0 0 0 / 40%); }.canvas-controls button { display: grid; width: 32px; height: 30px; place-items: center; border: 0; border-bottom: 1px solid var(--line); background: var(--panel); color: var(--text); font-size: 19px; cursor: pointer; }.canvas-controls button:last-child { border-bottom: 0; font-size: 16px; }.canvas-controls button:hover { background: var(--panel-2); }
.minimap { position: absolute; right: 18px; bottom: 18px; width: 180px; height: 110px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--panel); box-shadow: 0 4px 12px rgb(0 0 0 / 40%); }.minimap svg { display: block; width: 100%; height: 100%; }.minimap-grid { fill: #1f1b30; }.minimap-viewport { fill: none; stroke: var(--v0); stroke-width: 1; }

.sweep-panel { display: flex; flex: 0 0 440px; flex-direction: column; gap: 16px; overflow-y: auto; padding: 20px; border-left: 1px solid var(--line); background: var(--panel); }.sweep-panel-header h2 { margin: 0; color: var(--text); font-size: 16px; font-weight: 600; letter-spacing: .2px; }.sweep-controls { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; padding: 14px; border: 1px solid var(--line-soft); border-radius: var(--radius); background: rgb(0 0 0 / 18%); }.sweep-field { display: flex; flex-direction: column; gap: 5px; color: var(--muted); font-size: 10.5px; font-weight: 700; letter-spacing: .6px; text-transform: uppercase; }.sweep-field input { padding: 9px 10px; border: 1px solid var(--line); border-radius: var(--radius-sm); outline: none; background: var(--panel-2); color: var(--text); font: 13px var(--mono); }.sweep-field input:focus { border-color: var(--v0); }.sweep-run-btn, .sweep-stop-btn { grid-column: 1 / -1; padding: 11px 20px; }.sweep-run-btn { background: var(--action); color: var(--action-ink); }.sweep-stop-btn { background: var(--danger); color: #2a0e17; }.sweep-stop-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgb(232 104 139 / 40%); }.sweep-status { padding: 10px 12px; border: 1px solid var(--line-soft); border-radius: var(--radius-sm); background: rgb(0 0 0 / 18%); }.sweep-status p { margin: 0; color: var(--text); font: 12px var(--mono); letter-spacing: .2px; text-align: center; }.sweep-chart { position: relative; min-height: 320px; flex: 1; }.sweep-chart svg { display: block; width: 100%; height: 320px; overflow: visible; }.chart-grid line { stroke: var(--line); stroke-dasharray: 3 3; }.chart-axis { stroke: var(--muted); stroke-width: 1; }.chart-axis-labels text { fill: var(--muted); font: 11px var(--mono); }.chart-confidence-band { fill: var(--v0); fill-opacity: .18; stroke: none; }.chart-mean-line { fill: none; stroke: var(--v1); stroke-width: 2.5; }.chart-tooltip { position: absolute; z-index: 5; min-width: 118px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--text); font: 12px var(--mono); pointer-events: none; }

.json-panel { position: absolute; z-index: 1000; top: 20px; right: 20px; display: flex; width: 400px; max-height: calc(100vh - 40px); flex-direction: column; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); box-shadow: 0 12px 40px rgb(0 0 0 / 60%); }.json-panel-header { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--line); background: var(--panel-2); }.json-panel-header h2 { margin: 0; color: var(--text); font-size: 15px; font-weight: 600; }.close-btn { display: grid; width: 28px; height: 28px; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: transparent; color: var(--muted); font-size: 16px; cursor: pointer; }.close-btn:hover { border-color: var(--danger); color: var(--danger); }.json-content { flex: 1; margin: 0; overflow: auto; padding: 18px; background: var(--ink-2); color: #b9c0f5; font: 12.5px/1.65 var(--mono); white-space: pre; }

.app-dialog-backdrop { position: fixed; z-index: 2200; inset: 0; display: grid; place-items: center; padding: 20px; background: rgb(10 8 18 / 72%); backdrop-filter: blur(3px); }.app-dialog { width: min(420px, calc(100vw - 40px)); padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); box-shadow: 0 18px 60px rgb(0 0 0 / 62%); }.app-dialog h2 { margin: 0 0 10px; color: var(--text); font-size: 17px; }.app-dialog p { margin: 0 0 14px; color: var(--muted); font-size: 13px; line-height: 1.5; }.app-dialog p.error { color: var(--danger); }.app-dialog input { width: 100%; padding: 11px 12px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--panel-2); color: var(--text); font: 14px var(--mono); }.app-dialog input:focus { border-color: var(--v0); outline: 2px solid var(--v0-a24); }.app-dialog-actions { display: flex; justify-content: flex-end; gap: 9px; margin-top: 18px; }.app-dialog-actions .secondary-btn, .app-dialog-actions .simulate-btn { width: auto; min-width: 100px; margin: 0; }

@media (prefers-reduced-motion: reduce) { *,*::before,*::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; } }