@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=IBM+Plex+Mono:wght@400;500&display=swap');
:root{font-family:'DM Sans',system-ui,sans-serif;color:var(--text);background:var(--page-bg);font-synthesis:none;--mono:'IBM Plex Mono',monospace;color-scheme:var(--color-scheme)}*{box-sizing:border-box}body{margin:0;font-size:16px}button,input,select{font:inherit}button,select,input[type=range],input[type=checkbox]{cursor:pointer}button{color:inherit}button:focus-visible,input:focus-visible,select:focus-visible,canvas:focus-visible{outline:2px solid var(--mint);outline-offset:3px}button{transition:background .15s,color .15s}button:hover{filter:brightness(1.15)}button:disabled{cursor:default;opacity:.4}button:disabled:hover{filter:none}.workspace{display:grid;grid-template-columns:294px minmax(0,1fr);max-width:1800px;margin:auto}.sidebar{border-right:1px solid var(--border);padding:28px 24px;background:var(--surface);min-height:calc(100vh - 76px)}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:16px}.eyebrow{font-size:12px;font-weight:600;letter-spacing:1.6px;color:var(--muted)}.tiny-label{font-size:12px;color:var(--muted);font-family:var(--mono)}h2{font-size:14px;line-height:1.5;font-weight:550;margin:0}.dimension-control{display:flex;background:var(--plot-bg);border:1px solid var(--border);border-radius:8px;padding:4px;margin-bottom:24px}.dimension-control button{border:0;border-radius:5px;background:none;color:var(--muted);width:50%;padding:9px;font-size:14px}.dimension-control .selected{background:var(--selected-bg);color:var(--text);box-shadow:0 2px 4px #0003}.field-label{display:block;font-size:13px;color:var(--muted);margin-bottom:9px}select{background:var(--input-bg);border:1px solid var(--border);border-radius:6px;color:var(--text);padding:10px 30px 10px 12px;font-size:14px;max-width:100%}#preset{width:100%}.control-section{margin-top:27px;border-top:1px solid var(--border);padding-top:24px}.matrix-editor{display:grid;gap:8px;padding:0 10px;border-left:2px solid var(--border-strong);border-right:2px solid var(--border-strong);border-radius:3px;margin:3px 2px 16px}.matrix-editor input{background:var(--input-bg);border:1px solid var(--border);color:var(--text);font-family:var(--mono);font-size:15px;text-align:center;width:100%;min-width:0;padding:10px 2px;border-radius:4px}.matrix-editor input:focus{border-color:var(--mint)}input::-webkit-inner-spin-button{opacity:.4}.equations{font-family:var(--mono);font-size:12px;line-height:1.9;color:var(--muted);padding-left:4px;white-space:normal}.error-message{color:var(--error);font-size:12px;margin:5px 0 0}.error-message:empty{display:none}.seed-row{display:flex;gap:6px;align-items:center;margin-bottom:10px}.seed-dot{width:7px;height:7px;border-radius:50%;flex:none;margin-right:5px}.seed-coordinate{position:relative;flex:1;min-width:0}.seed-coordinate span{font-family:var(--mono);font-size:11px;position:absolute;left:8px;top:11px;color:var(--muted)}.seed-coordinate input{width:100%;min-width:0;background:var(--input-bg);border:1px solid var(--border);border-radius:5px;padding:8px 2px 8px 29px;font-family:var(--mono);font-size:13px;color:var(--text)}.seed-row.three{gap:4px}.seed-row.three .seed-dot{margin-right:1px}.seed-row.three .seed-coordinate span{display:none}.seed-row.three .seed-coordinate input{padding-left:4px}.remove-seed{border:0;background:none;color:var(--muted);font-size:18px;padding:3px;width:19px;flex:none}.add-button{width:100%;border:1px dashed var(--border);background:none;border-radius:6px;font-size:13px;color:var(--secondary);padding:9px;margin-top:3px}.add-button span{margin-right:7px}.hint{font-size:12px;color:var(--muted);line-height:1.6;margin:10px 0 0}.toggle-row{display:flex;justify-content:space-between;align-items:center;font-size:13px;margin-top:16px;color:var(--secondary)}.toggle-row input{appearance:none;width:30px;height:18px;border-radius:12px;background:var(--switch-bg);position:relative;margin:0}.toggle-row input:after{content:'';position:absolute;top:3px;left:3px;width:12px;height:12px;border-radius:50%;background:var(--switch-knob);transition:transform .2s}.toggle-row input:checked{background:var(--mint)}.toggle-row input:checked:after{transform:translateX(12px);background:var(--switch-knob)}.sidebar-footer{border-top:1px solid var(--border);margin-top:28px;padding-top:22px;display:flex;flex-direction:column;gap:8px;color:var(--muted);font-size:11px;line-height:1.6}.small-math{font-family:var(--mono);font-size:14px;color:var(--muted)}main{padding:28px 32px 16px;min-width:0}.main-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px;gap:15px}.main-heading .eyebrow{font-size:11px;letter-spacing:1.8px}h1{font-size:30px;font-weight:550;letter-spacing:-.8px;margin:7px 0 0;line-height:1.2}.badge{font-size:12px;color:var(--stable);background:var(--stable-bg);border:1px solid var(--stable-border);padding:7px 11px;border-radius:30px;display:flex;align-items:center;gap:7px;white-space:nowrap}.badge span{width:5px;height:5px;border-radius:50%;background:currentColor}.badge.unstable{color:var(--unstable);background:var(--unstable-bg);border-color:var(--unstable-border)}.badge.neutral{color:var(--neutral);background:var(--neutral-bg);border-color:var(--neutral-border)}.portrait-card,.panel{border:1px solid var(--border);border-radius:10px;overflow:hidden;background:var(--panel)}.plot-topbar{height:55px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);padding:0 18px;gap:10px}.plot-title{font-size:14px;font-weight:500;display:flex;align-items:center;gap:10px}.plot-icon{color:var(--mint);font-size:20px}.plot-meta{font-size:12px;color:var(--muted);margin-left:5px;font-weight:400}.plot-actions{display:flex;align-items:center;gap:5px}.icon-button{background:none;border:0;border-radius:4px;width:28px;height:28px;font-size:20px;color:var(--muted);display:inline-flex;align-items:center;justify-content:center;flex:none}.icon-button:hover{background:var(--hover-bg)}.action-divider{width:1px;height:15px;background:var(--border);margin:0 6px}.canvas-wrap{height:clamp(330px,42vh,510px);position:relative;background:var(--plot-bg);overflow:hidden}#phase-canvas{display:block;width:100%;height:100%;touch-action:none}.plot-hint{position:absolute;left:18px;bottom:15px;color:var(--muted);font-size:11px;pointer-events:none;display:flex;align-items:center;gap:7px}.hint-cross{font-size:16px}.axis-caption{position:absolute;right:18px;bottom:16px;font-family:var(--mono);font-size:12px;color:var(--muted);pointer-events:none}.playback{min-height:62px;display:flex;align-items:center;padding:12px 18px;gap:12px;border-top:1px solid var(--border);background:var(--surface)}.play-button{width:33px;height:33px;flex:none;border:0;border-radius:6px;background:var(--mint);color:var(--on-accent);font-size:13px;padding:0}.time-label{font-family:var(--mono);font-size:12px;white-space:nowrap;min-width:72px;color:var(--secondary)}input[type=range]{accent-color:var(--mint);width:100%;min-width:20px;height:4px}.duration-label{display:flex;align-items:center;gap:4px;color:var(--muted);font-family:var(--mono);font-size:12px;white-space:nowrap}.duration-label input{width:38px;background:transparent;border:0;border-bottom:1px solid var(--border);color:var(--secondary);padding:4px 0;text-align:center;font-size:12px;appearance:textfield}.duration-label input::-webkit-inner-spin-button{display:none}#speed{padding:4px;border:0;background:transparent;font-size:12px;width:47px;flex:none}.bottom-panels{display:grid;grid-template-columns:1.25fr 1fr;gap:18px;margin-top:18px}.panel{padding:17px 20px;min-width:0;position:relative;min-height:221px}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.chart-legend{display:flex;gap:13px;font:12px var(--mono)}.chart-legend span:before{content:'';display:inline-block;width:10px;height:2px;background:currentColor;vertical-align:middle;margin-right:5px}.legend-x{color:var(--mint)}.legend-y{color:var(--violet)}.legend-z{color:var(--orange)}.chart-selection{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--muted);margin-top:5px}.chart-selection select{padding:2px 4px;font-size:11px;border:0;background:transparent;max-width:120px}#time-canvas{width:100%;height:133px;display:block;margin-top:3px}.eigenvalues{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 12px}.eigen-chip{font-family:var(--mono);font-size:13px;display:flex;gap:9px;align-items:center;border:1px solid var(--border);border-radius:5px;padding:8px 10px;background:var(--input-bg);color:var(--stable)}.eigen-chip span{color:var(--muted);font-size:11px}.insight{color:var(--muted);font-size:13px;line-height:1.7;margin:0 0 15px}.matrix-stats{display:flex;gap:24px;border-top:1px solid var(--border);padding-top:13px;font-size:11px;color:var(--muted)}.matrix-stats strong{font-family:var(--mono);font-size:12px;color:var(--secondary);font-weight:400;margin-left:7px}.main-footer{display:flex;justify-content:space-between;margin-top:16px;font-size:11px;color:var(--muted);gap:10px}.main-footer sup{font-size:9px}
@media(min-width:1550px){main{padding:34px 42px}.sidebar{padding-top:34px}.canvas-wrap{height:510px}.bottom-panels{gap:22px}.panel{min-height:241px}#time-canvas{height:151px}}@media(max-width:1100px){.workspace{grid-template-columns:260px minmax(0,1fr)}.sidebar{padding:25px 18px}main{padding:26px 22px 16px}.main-heading{align-items:flex-start}.badge{font-size:10px;padding:6px 8px;margin-top:7px}.bottom-panels{grid-template-columns:1fr}.plot-meta{display:none}.panel{min-height:200px}#time-canvas{height:125px}.playback{gap:7px;padding:12px}.eigenvalues{margin-top:13px}.main-footer{font-size:10px}}@media(max-width:700px){.workspace{display:flex;flex-direction:column}.sidebar{min-height:0;border-right:0;border-bottom:1px solid var(--border);padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:16px 20px}.sidebar>.section-heading{grid-column:1/-1;margin-bottom:0}.dimension-control{margin:0}.field-label{display:none}#preset{align-self:start}.control-section{margin-top:0;padding-top:16px;min-width:0}.control-section .section-heading{margin-bottom:12px}.control-section:nth-of-type(3){grid-column:1/-1;display:flex;align-items:center;gap:18px;flex-wrap:wrap}.control-section:nth-of-type(3) .section-heading{display:none}.toggle-row{margin:0;gap:10px;font-size:12px}.sidebar-footer{display:none}.matrix-editor{padding:0 5px;gap:5px}.matrix-editor input{padding:8px 0;font-size:13px}.equations{font-size:10px}.seed-coordinate span{display:none}.seed-coordinate input{padding-left:5px;font-size:12px}.seed-row{gap:4px}.seed-dot{margin-right:2px}.hint{font-size:11px}main{padding:23px 16px 15px}.main-heading{gap:8px;margin-bottom:20px}h1{font-size:26px}.main-heading .eyebrow{font-size:9px}.badge{font-size:10px;margin-top:20px}.canvas-wrap{height:390px}.plot-topbar{padding:0 12px}.plot-title{font-size:13px}.playback{gap:6px}.duration-label{display:none}.time-label{font-size:10px;min-width:61px}.plot-hint{font-size:10px;left:12px}.axis-caption{right:12px;font-size:10px}.bottom-panels{gap:14px;margin-top:14px}.panel{padding:16px}.main-footer{flex-wrap:wrap;line-height:1.5}.sidebar .eyebrow{font-size:11px}}

[hidden]{display:none!important}.sidebar-footer{font-size:12px}.field-label,.toggle-row,.add-button{font-size:14px}.equations{font-size:13px}.seed-coordinate span{font-size:12px}.plot-hint,.chart-selection,.main-footer,.matrix-stats{font-size:12px}.chart-selection select{font-size:12px}.badge{font-size:12px}
@media(max-width:700px){.equations{font-size:12px}.badge{font-size:10px}.toggle-row{font-size:12px}.duration-label{display:flex}.time-label{min-width:58px}.playback{gap:5px}.playback .icon-button{width:23px}.duration-label input{width:26px}}

.seed-coordinate input[aria-invalid="true"]{border-color:var(--error)}.seed-coordinate span{pointer-events:none}

.time-window{display:flex;align-items:center;flex-wrap:wrap;gap:12px 22px;padding:10px 18px;border-top:1px solid var(--border);background:var(--surface);color:var(--muted);font-size:13px}.time-window label{display:flex;align-items:center;gap:8px}.time-window input{width:64px;border:1px solid var(--border);background:var(--input-bg);border-radius:5px;color:var(--text);padding:5px 7px;font:13px var(--mono)}.time-window>span{font-size:12px;color:var(--muted);margin-left:auto}.time-window .error-message{flex-basis:100%;margin:0}.time-label{min-width:84px}@media(max-width:700px){.time-window{padding:10px 12px;gap:10px 16px}.time-window>span{margin-left:0;flex-basis:100%}.time-label{min-width:74px}}

#initials{max-height:340px;overflow:auto;padding:2px 4px 2px 0;scrollbar-width:thin}.seed-entry{margin-bottom:12px}.seed-entry .seed-row{margin-bottom:3px}.seed-behavior{color:var(--muted);font-size:12px;line-height:1.4;padding-left:18px}.placement-bar{display:flex;align-items:center;flex-wrap:wrap;gap:10px 20px;padding:9px 18px;background:var(--surface);border-bottom:1px solid var(--border);color:var(--secondary);font-size:13px}.placement-bar label{display:flex;align-items:center;gap:8px}.placement-bar select{padding:5px 8px;font-size:13px}.placement-bar input{width:64px;background:var(--input-bg);border:1px solid var(--border);color:var(--text);border-radius:5px;padding:5px 7px;font:13px var(--mono)}.placement-status{font-size:12px;line-height:1.5;color:var(--stable);padding:7px 18px;margin:0;background:var(--surface)}.placement-status:empty{display:none}#phase-canvas{cursor:crosshair}.seed-coordinate input{padding-right:4px}@media(max-width:700px){#initials{max-height:260px}.placement-bar{padding:9px 12px;gap:8px}.seed-behavior{font-size:12px;padding-left:0}}


.portrait-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:18px;align-items:start}.portrait-layout.has-trace-plane{grid-template-columns:minmax(0,1.5fr) minmax(290px,1fr)}.trace-panel{padding:15px 16px;background:var(--panel)}.trace-panel h2{font-size:15px}.trace-values{font:13px var(--mono);color:var(--stable);margin:9px 0 3px;white-space:pre-wrap}#trace-canvas{display:block;width:100%;height:300px;cursor:crosshair;touch-action:none}.trace-tools{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;font-size:12px}.trace-tools>span{color:var(--secondary)}.trace-tools label{display:flex;align-items:center;gap:5px;color:var(--muted);cursor:pointer}.trace-tools input{accent-color:var(--mint)}.trace-key{display:grid;gap:5px;padding-top:12px;margin-top:12px;border-top:1px solid var(--border);color:var(--muted);font-size:12px;line-height:1.5}.trace-key span:first-child{color:var(--violet)}.trace-key span:nth-child(2){color:var(--stable)}
@media(max-width:1250px){.portrait-layout.has-trace-plane{grid-template-columns:minmax(0,1fr)}#trace-canvas{height:245px}.trace-panel{padding:14px 18px}.trace-key{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.trace-panel .hint{margin-top:7px}}
@media(min-width:1251px){.has-trace-plane .playback{gap:7px;padding:12px}.has-trace-plane .plot-meta{display:none}.has-trace-plane .time-window>span{margin-left:0}.trace-panel{position:sticky;top:18px}}