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#0f1624;--panel-alt: #121c2c;--text: #e5e7eb;--muted: #9aa4b2;--border: #1f2a3a;--border-strong: #253246;--shadow: 0 30px 80px rgba(2, 6, 23, .55);--shadow-sm: 0 12px 28px rgba(0, 0, 0, .45);--focus: rgba(56, 189, 248, .35);--accent: #38bdf8;--accent-2: #a3e635;--accent-3: #fbbf24;--input-bg: #0b1322;--output-bg: #0b1220;--output-text: #e2e8f0;--output-border: #1f2a3a;--output-shadow: rgba(0, 0, 0, .55);--plot-bg: #ffffff;--plot-text: #0f172a;--plot-border: #e2e8f0;--plot-pill-bg: #f1f5f9;--plot-pill-border: #e2e8f0}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(1000px 600px at 10% -10%,rgba(14,165,233,.18),transparent 60%),radial-gradient(900px 600px at 110% 0%,rgba(34,197,94,.14),transparent 55%),var(--bg);font-family:var(--font-body);color:var(--text);letter-spacing:-.01em}.app-header{position:relative;z-index:1}:root[data-theme=dark] body{background:radial-gradient(1000px 600px at 10% -10%,rgba(56,189,248,.16),transparent 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var(--border);background:var(--panel);color:var(--text);font-size:.72rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:6px 10px;border-radius:999px;cursor:pointer;transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease}.collapse-toggle:hover{border-color:var(--border-strong);transform:translateY(-1px);box-shadow:0 10px 20px #0f172a1f}.collapse-toggle:focus-visible{outline:none;box-shadow:0 0 0 3px var(--focus)}.tab-section.collapsed .section-body{display:none}.tab-section.collapsed{border:1px dashed var(--border);border-radius:12px;padding:10px 12px;background:var(--panel-alt)}.tab-section.collapsed .collapse-hint{display:inline-flex}@media (max-width: 900px){.tab-panel{min-height:520px}}@media (max-width: 720px){.tab-header{padding:14px 14px 0}.tab-buttons{grid-template-columns:1fr}.tab-panels{padding:14px 14px 20px}}#config-two-col{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}@media (max-width: 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summary{color:var(--text);border-color:var(--border-strong);background:var(--panel);transform:translateY(-1px)}.help-tooltip{position:absolute;top:calc(100% + 10px);left:0;min-width:220px;max-width:280px;padding:10px 12px;border-radius:12px;border:1px solid var(--border);background:var(--panel);color:var(--text);font-size:.85rem;font-weight:500;line-height:1.35;box-shadow:var(--shadow-sm);z-index:20}.help[open] .help-tooltip{animation:tooltip-pop .18s ease}@keyframes tooltip-pop{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}input,select{width:100%;height:40px;padding:8px 12px;font-size:.95rem;border:1px solid var(--border);border-radius:10px;background:var(--input-bg);color:var(--text);outline:none;transition:border-color .15s ease,box-shadow .15s ease}input[type=file]{padding:6px 10px;height:42px}input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--focus)}.button-row{margin-top:18px;display:flex;gap:12px;flex-wrap:wrap}.btn{border:1px solid transparent;border-radius:999px;padding:10px 18px;font-size:.95rem;cursor:pointer;font-weight:600;color:var(--text);background:var(--panel-alt);transition:background .2s ease,color .2s ease,transform .15s ease,box-shadow .2s ease,border-color .2s ease}.btn.primary{background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);color:#fff;box-shadow:0 14px 28px #0ea5e940;border-color:transparent}.btn.primary:hover{transform:translateY(-2px)}.btn.secondary{background:var(--panel-alt);border-color:var(--border)}.btn.secondary:hover{background:var(--bg-strong)}.btn.tertiary{background:transparent;border-color:var(--border);color:var(--text)}.btn.tertiary:hover{background:var(--panel-alt)}.btn:focus-visible{outline:none;box-shadow:0 0 0 3px var(--focus)}#reset-view,#example-btn,#download-initial,#download-final{box-shadow:0 8px 18px 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var(--output-shadow)}.status-card{display:grid;gap:8px;padding:0;border-radius:0;border:none;background:transparent}.status-title{font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;font-weight:600;color:var(--muted)}.status-log{line-height:1.45}@media (max-width: 640px){.app{padding:16px 12px 32px}}.interactive-grid{display:grid;grid-template-columns:340px 1fr;gap:18px;align-items:start}.interactive-controls,.interactive-canvas-wrap{min-width:0}.interactive-canvas-wrap{position:relative;border:1px solid var(--border);border-radius:14px;overflow:hidden;background:var(--plot-bg)}#graph-canvas{display:block;width:100%;height:720px;max-width:100%;touch-action:none;background:var(--plot-bg)}.interactive-controls{overflow:hidden}@media (max-width: 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14px;box-shadow:var(--shadow-sm)}.flow-stat-label{color:var(--muted);font-size:.85rem;font-weight:600;margin-bottom:6px}.flow-stat-value{font-size:1.4rem;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums}.sankey-controls-left{display:flex;gap:14px;flex-wrap:wrap;align-items:center}.sankey-hint{color:var(--muted);font-size:.9rem}.sankey-wrap{position:relative;display:flex;flex-direction:column;border:1px solid var(--plot-border);border-radius:14px;background:var(--plot-bg);overflow:hidden;min-height:0}#sankey-svg{display:block;width:100%;flex:1 1 auto;min-height:0;background:var(--plot-bg)}@media (max-width: 900px){:root{--flow-panel-height: 520px}}.legend-hint{margin-top:14px;padding:10px 12px;border:1px dashed var(--border);border-radius:10px;color:var(--muted);font-size:.9rem}.legend-title{margin-top:20px;font-weight:600;color:var(--text)}.bin-legend{margin-top:8px;display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px;font-size:.9rem;color:var(--text)}.bin-legend-item{display:flex;align-items:center;gap:8px;padding:6px 8px;border:1px solid var(--border);border-radius:10px;background:var(--panel-alt)}.bin-legend-swatch{width:14px;height:14px;border-radius:4px;border:1px solid rgba(0,0,0,.18);flex:0 0 auto}.bin-legend-swatch.legend-misbinned{background:transparent;border:2px dashed #ef4444;width:18px;height:18px;border-radius:5px}.bin-legend-swatch.legend-ambiguous{background:transparent;border:2px dotted #111827;width:18px;height:18px;border-radius:5px}.bin-legend-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cb{display:inline-flex;align-items:center;gap:10px;-webkit-user-select:none;user-select:none;cursor:pointer;min-height:28px}.cb input{position:absolute;opacity:0;pointer-events:none}.cb-box{width:22px;height:22px;border-radius:6px;border:1.5px solid var(--border);background:var(--input-bg);display:inline-grid;place-items:center;transition:background .12s ease,border-color .12s ease,box-shadow .12s ease}.cb-box:after{content:"";width:11px;height:7px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg) scale(0);transform-origin:center;transition:transform .12s ease}.cb-text{color:var(--text)}.cb input:checked+.cb-box{background:var(--accent);border-color:var(--accent)}.cb input:checked+.cb-box:after{transform:rotate(-45deg) scale(1)}.cb:hover .cb-box{border-color:var(--border-strong)}.cb input:focus-visible+.cb-box{box-shadow:0 0 0 3px var(--focus);border-color:var(--accent)}.cb input:disabled+.cb-box{opacity:.5;cursor:not-allowed}.sankey-title-row{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:0;padding:12px 16px 10px;background:var(--plot-bg);border-bottom:1px solid var(--plot-border)}.sankey-title{font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--plot-text);background:var(--plot-pill-bg);border:1px solid var(--plot-pill-border);padding:6px 10px;border-radius:999px}#sankey-left-title{text-align:left}#sankey-right-title{text-align:right}