/* Shared shell for the eight model experiments. Theme and render styles stay local. */
.experiment-page {
  --ui-surface: #fffdfb;
  --ui-ink: #393b40;
  --ui-line: color-mix(in srgb, var(--ui-accent) 16%, #eee);
  --ui-muted: #71747a;
  --ui-tint: color-mix(in srgb, var(--ui-accent) 8%, var(--ui-surface));
}
.experiment-page .experiment-layout {
  display:grid; grid-template-columns:minmax(0,1fr) 360px; gap:24px;
  max-width:1560px; margin:24px auto; padding:0 28px; align-items:start;
}
.experiment-layout > .stage { min-height:640px; height:calc(100vh - 205px); max-height:860px; }
.experiment-layout > .artwork, .experiment-artwork { min-width:0; position:sticky; top:20px; }
.experiment-artwork .stage { height:clamp(420px,65vh,780px); }
.experiment-page .experiment-panel {
  min-width:0; width:100%; max-width:none; margin:0; padding:24px;
  background:var(--ui-surface); border:1px solid var(--ui-line); border-radius:16px;
  color:var(--ui-ink); box-shadow:0 6px 24px #24202005; align-self:start;
}
.experiment-panel .experiment-panel-heading { margin:0 0 20px; }
.experiment-panel .experiment-panel-heading p { font-size:10px; letter-spacing:1px; color:var(--ui-accent); margin:0 0 8px; }
.experiment-panel .experiment-panel-heading h2 { font-size:22px; font-weight:600; letter-spacing:0; margin:0; }
.experiment-panel .intro { color:var(--ui-muted); font-size:12px; line-height:1.8; margin:0 0 20px; }
.experiment-panel .intro br { display:none; }
.experiment-panel fieldset { display:block; min-width:0; border:0; margin:0; padding:0; }
.experiment-panel .control-group {
  padding:20px 0; margin:0; border:0; border-top:1px solid var(--ui-line); min-width:0;
}
.experiment-panel .control-group > h3 { font-size:13px; font-weight:650; margin:0 0 16px; letter-spacing:0; color:var(--ui-ink); }
.experiment-panel label { font-size:12px; color:var(--ui-ink); }
.experiment-panel label:not(.bar-label) { display:flex; align-items:center; justify-content:space-between; gap:10px; margin:14px 0 8px; }
.experiment-panel :is(.control-top,.field-head,.control-value-label) { display:flex; align-items:center; justify-content:space-between; gap:8px; margin-bottom:8px; }
.experiment-panel :is(.control-top,.field-head) label { margin:0; }
.experiment-panel .control-row { padding:12px 0; border-bottom:1px solid var(--ui-line); }
.experiment-panel .field { margin:16px 0; }
.experiment-panel :is(.number-wrap,.number-box) { display:flex; align-items:center; gap:4px; padding:0 8px; min-height:36px; border:1px solid var(--ui-line); border-radius:8px; background:var(--ui-surface); }
.experiment-panel input[type=number] { width:68px; min-height:34px; border:0; background:transparent; color:var(--ui-ink); font:inherit; font-size:12px; text-align:right; }
.experiment-panel :is(.number-wrap,.number-box) span { font-size:10px; color:var(--ui-muted); }
.experiment-panel input[type=range] { display:block; width:100%; height:20px; margin:8px 0; accent-color:var(--ui-accent); cursor:pointer; }
.experiment-panel input[type=checkbox] { position:static; opacity:1; appearance:auto; width:17px; height:17px; margin:0; flex-shrink:0; accent-color:var(--ui-accent); }
.experiment-panel .switch { display:none; }
.experiment-panel input[type=color] { width:44px; height:32px; padding:3px; border:1px solid var(--ui-line); border-radius:6px; background:var(--ui-surface); }
.experiment-panel select { min-width:0; max-width:65%; padding:8px; min-height:36px; border:1px solid var(--ui-line); border-radius:8px; background:var(--ui-surface); color:var(--ui-ink); font:inherit; font-size:12px; }
.experiment-panel output { color:var(--ui-accent); font-size:12px; font-variant-numeric:tabular-nums; }
.experiment-panel button { min-height:40px; border:1px solid var(--ui-line); border-radius:8px; padding:9px 10px; background:var(--ui-surface); color:var(--ui-ink); font:inherit; font-size:12px; cursor:pointer; box-shadow:none; }
.experiment-panel button:hover:not(:disabled) { background:var(--ui-tint); border-color:var(--ui-accent); }
.experiment-panel button[aria-pressed=true] { background:var(--ui-accent); border-color:var(--ui-accent); color:white; }
.experiment-panel .control-choices { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:8px; margin:0; padding:0; background:none; border:0; }
.experiment-panel :is(.views,.segmented,.view-switch).control-choices { grid-template-columns:repeat(3,minmax(0,1fr)); }
.experiment-panel .control-choices button { width:100%; min-width:0; }
.experiment-panel .diagram-tabs button { display:flex; justify-content:space-between; flex-wrap:wrap; gap:6px; }
.experiment-panel :is(#segment-tabs,#step-tabs) { display:flex; gap:8px; margin:12px 0; }
.experiment-panel :is(#segment-tabs,#step-tabs) button { flex:1; min-width:0; background:var(--color,var(--ui-tint)); color:var(--ui-ink); }
.experiment-panel :is(#segment-tabs,#step-tabs) button[aria-pressed=true] { outline:2px solid var(--ui-accent); outline-offset:2px; }
.experiment-panel .settings { margin:0; gap:8px; }
.experiment-panel .settings label { justify-content:flex-start; }
.experiment-panel :is(.hint,.field-note,.note,.detail-note,.panel-footnote,.notes,.range-labels,.range-limits,.scale-labels) { color:var(--ui-muted); font-size:11px; line-height:1.7; }
.experiment-panel :is(.control-actions,.actions) { display:grid; grid-template-columns:1fr; gap:8px; margin:16px 0; }
.experiment-panel button.primary { background:var(--ui-accent); color:white; }
.experiment-panel .control-reset { width:100%; margin:8px 0 0; background:var(--ui-tint); color:var(--ui-accent); }
.experiment-panel :is(.download,.source,.source-row,.source-links,.notes,details) { margin-top:20px; font-size:11px; line-height:1.7; }
.experiment-panel .download { background:var(--ui-accent); color:white; border-radius:8px; padding:12px; }
.experiment-panel .notes { display:block; }
.experiment-panel .notes>div { display:flex; flex-wrap:wrap; gap:12px; }
.experiment-panel pre { white-space:pre-wrap; overflow-wrap:anywhere; }
.experiment-panel :is(button,input,select,summary,a):focus-visible { outline:2px solid var(--ui-accent); outline-offset:3px; }
.experiment-panel :is(button,input,select):disabled, .experiment-panel fieldset:disabled { opacity:.5; cursor:not-allowed; }
.experiment-panel fieldset:disabled :is(button,input,select) { opacity:1; }
@media(max-width:1100px) and (min-width:901px) {
  .experiment-page .experiment-layout { padding:0 18px; gap:18px; }
}
@media(max-width:900px) {
  .experiment-page .experiment-layout { grid-template-columns:minmax(0,1fr); gap:20px; padding:0 16px; margin:18px auto; }
  .experiment-layout > .artwork, .experiment-artwork { position:static; }
  .experiment-layout > .stage { height:560px; min-height:500px; }
  .experiment-page .experiment-panel { padding:22px; }
}
@media(max-width:480px) {
  .experiment-page .experiment-layout { padding:0 12px; }
  .experiment-page .experiment-panel { padding:20px; }
  .experiment-layout > .stage { height:520px; min-height:460px; }
  .experiment-panel button { min-height:44px; }
}
/* Keep the preview visible while editing long groups of values. */
@media(min-width:901px) {
  .experiment-layout > .stage { position:sticky; top:20px; }
}
.experiment-panel :is(.views,.segmented,.view-switch).control-choices { grid-auto-flow:column; grid-auto-columns:minmax(0,1fr); grid-template-columns:none; }
/* Explicit tracks prevent legacy custom sliders from changing control geometry. */
.experiment-panel input[type=range] { appearance:none; background:transparent; border:0; border-radius:0; }
.experiment-panel input[type=range]::-webkit-slider-runnable-track { height:4px; border-radius:4px; background:var(--ui-line); }
.experiment-panel input[type=range]::-webkit-slider-thumb { appearance:none; width:16px; height:16px; margin-top:-6px; border:2px solid var(--ui-surface); border-radius:50%; background:var(--ui-accent); box-shadow:0 0 0 1px var(--ui-accent); }
.experiment-panel input[type=range]::-moz-range-track { height:4px; border:0; border-radius:4px; background:var(--ui-line); }
.experiment-panel input[type=range]::-moz-range-thumb { width:12px; height:12px; border:2px solid var(--ui-surface); border-radius:50%; background:var(--ui-accent); box-shadow:0 0 0 1px var(--ui-accent); }