:root {
  color-scheme: dark;
  --ground: #17191c;
  --panel: #232733;
  --raised: #333946;
  --paper: #ffffff;
  --ink: #dce0e6;
  --muted: #a6acb4;
  --line: #ffffff24;
  --blue: #8bb8ee;
  --code: #181a1d;
  --code-ink: #d5d9df;
  --green: #aad84c;
  --red: #ef7177;
  --stage: #101216;
  --caution: #e5bd77;
  --hover: #ffffff0b;
  --sans: system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", "Cascadia Code", monospace;
}
* { box-sizing: border-box; }
html { min-width: 320px; background: var(--ground); }
body { margin: 0; color: var(--ink); font: 14px/1.5 var(--sans); }
button, input, textarea, select { font: inherit; }
button, summary, a { -webkit-tap-highlight-color: transparent; }
button, summary { cursor: pointer; }
button:disabled { cursor: default; opacity: .45; }
button { color: inherit; }
a { color: inherit; text-underline-offset: 3px; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
button, select, summary { border-radius: 4px; }
.skip-link { position: fixed; top: 8px; left: 12px; z-index: 100; padding: 8px 12px; background: var(--raised); transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.topbar { height: 72px; padding: 0 28px; display: flex; align-items: center; gap: 48px; border-bottom: 1px solid var(--line); background: var(--ground); }
.wordmark { text-decoration: none; font-family: Georgia, serif; font-weight: 600; font-size: 25px; letter-spacing: -.6px; white-space: nowrap; }
.wordmark small { display: none; }
.primary-nav { display: flex; gap: 6px; height: 100%; align-items: center; }
.primary-nav a { padding: 6px 10px; border-radius: 4px; text-decoration: none; font-size: 13px; color: var(--muted); }
.primary-nav a:hover { background: #ffffff08; color: var(--ink); }
.primary-nav a.active { color: var(--ink); box-shadow: 0 2px var(--blue); border-radius: 0; }
.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 18px; }
.utility-link, .app-link { border: 0; padding: 6px 0; background: none; font-size: 13px; color: var(--muted); text-decoration: none; }
.utility-link:hover, .app-link:hover { color: var(--ink); }
.app-link span { margin-left: 3px; }
.explore-main { height: calc(100dvh - 72px); min-height: 440px; }
.playhouse { height: 100%; display: grid; grid-template-rows: minmax(0,1fr) 30px; }
.example-label, .document-dot { display: none; }
.quick-example, .example-picker summary { min-height: 32px; padding: 6px 10px; border: 0; background: none; color: var(--muted); font-size: 13px; white-space: nowrap; }
.quick-example:hover, .example-picker summary:hover { background: #ffffff09; color: var(--ink); }
.quick-example.active { color: var(--blue); background: #4f8fd619; }
.example-picker { position: relative; }
.example-picker summary { display: flex; gap: 10px; align-items: center; list-style: none; }
.example-picker summary::-webkit-details-marker { display: none; }
.example-picker[open] > summary { color: var(--ink); background: var(--raised); }
.picker-popover > label { display: block; margin-bottom: 8px; font-size: 12px; color: var(--muted); }
#example-search, #catalog-search { width: 100%; height: 38px; padding: 0 10px; border: 1px solid #586170; border-radius: 4px; background: var(--code); color: var(--ink); }
input::placeholder { color: #969da7; }
.picker-results { margin-top: 8px; max-height: min(420px,60vh); overflow-y: auto; }
.picker-results button { display: flex; width: 100%; align-items: center; justify-content: space-between; gap: 12px; border: 0; padding: 10px 8px; background: none; text-align: left; font-size: 13px; }
.picker-results button:hover, .picker-results button.active { background: var(--hover); }
.picker-results button.active { color: var(--blue); }
.picker-results small { color: var(--muted); font-size: 11px; text-align: right; }
.picker-empty { margin: 12px 8px 4px; color: var(--muted); font-size: 13px; }
#engine-state { font-size: 12px; color: var(--muted); }
.workbench { min-height: 0; display: grid; grid-template-columns: minmax(0, var(--source-width,44%)) 6px minmax(0,1fr); }
.source-pane { min-width: 0; min-height: 0; display: grid; grid-template-rows: 44px minmax(0,1fr) auto; }
.source-pane { background: var(--code); border-right: 1px solid var(--line); }
.editor-host { position: relative; min-width: 0; min-height: 0; overflow: hidden; }
.editor-host #source { display: block; width: 100%; height: 100%; padding: 0; border: 0; outline-offset: -2px; }
.auto-format { display: flex; align-items: center; gap: 4px; white-space: nowrap; }
.auto-format input { accent-color: var(--blue); }
.runtime-state { display: none; }
.format-dialog { width: min(620px,calc(100vw - 24px)); max-height: 85dvh; padding: 24px; border: 1px solid #586170; border-radius: 6px; background: var(--panel); color: var(--ink); }
.format-dialog::backdrop { background: #0009; }
.format-dialog header, .format-dialog footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.format-dialog h2 { margin: 0; font-size: 19px; font-weight: 550; }
.format-dialog p { color: var(--muted); font-size: 13px; }
.format-dialog button { padding: 6px 10px; background: var(--raised); border: 1px solid var(--line); }
.format-presets { display: flex; gap: 8px; padding: 8px 0 16px; }
#format-options > label { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 12px 0; border-top: 1px solid var(--line); }
#format-options strong, #format-options small { display: block; }
#format-options strong { font: 13px var(--mono); font-weight: 500; }
#format-options small { color: var(--muted); font-size: 12px; margin-top: 3px; }
#format-options select { min-width: 100px; color: var(--ink); background: var(--code); padding: 6px; border: 1px solid #586170; }
#format-options input { accent-color: var(--blue); }
.format-dialog footer { margin-top: 20px; font-size: 12px; }
.output-pane { min-width: 0; min-height: 0; display: grid; grid-template-rows: 44px minmax(0,1fr) auto; background: var(--stage); }
.output-pane.paged { grid-template-rows: 44px auto minmax(0,1fr) auto; }
.output-pane:has(.layout-notes:not([hidden])) { grid-template-rows: 44px auto minmax(0,1fr) auto auto; }
.pane-bar { min-width: 0; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 0 16px; background: var(--panel); border-bottom: 1px solid var(--line); }
.pane-bar > div:first-child { display: flex; align-items: center; gap: 10px; min-width: 0; }
.pane-index { display: none; }
.pane-bar h1, .pane-bar h2 { margin: 0; font: 500 13px var(--sans); color: var(--muted); }
.pane-bar small { color: var(--muted); font-size: 12px; }
.pane-actions { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: 12px; }
.pane-actions button, .view-switch button { min-height: 30px; padding: 5px 8px; border: 0; background: none; color: var(--muted); font-size: 12px; }
.pane-actions button:hover:not(:disabled) { color: var(--ink); background: var(--hover); }
.view-switch { display: flex; gap: 2px; padding: 2px; background: var(--ground); border-radius: 5px; }
.view-switch button { min-height: 26px; padding: 3px 9px; }
.view-switch button.active { color: var(--ink); background: var(--raised); }
#source-size { margin-right: 6px; font-size: 11px; font-variant-numeric: tabular-nums; }
#source { display: block; width: 100%; min-height: 0; resize: none; border: 0; padding: 22px 24px; background: var(--code); color: var(--code-ink); font: 14px/1.7 var(--mono); tab-size: 2; caret-color: var(--blue); }
#source::selection { background: #4f8fd640; }
.diagnostics { min-height: 36px; max-height: 130px; padding: 8px 16px; overflow: auto; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.5; }
.diagnostic-ok { color: var(--muted); }
.diagnostic-error { display: grid; gap: 3px; width: 100%; padding: 3px 0; border: 0; background: none; color: var(--red); text-align: left; font: inherit; }
.diagnostic-error small { color: var(--muted); font: inherit; }
.paper-stage { position: relative; min-height: 0; padding: 32px; overflow: auto; background: var(--stage); }
.paper { position: relative; min-height: 260px; padding: 40px 32px; display: grid; align-content: start; background: var(--paper); color: #111; }
.paper svg { width: 100%; height: auto; display: block; }
.paper.pages { display: block; padding: 0; background: none; }
.paper.pages .sheet { margin: 0 auto 24px; background: white; color: #111; max-width: none; }
.sheet figcaption { padding: 4px; background: var(--stage); color: var(--muted); text-align: center; font-size: 11px; }
.loading-message { margin: 40px auto; color: #68717d; font-size: 13px; }
.ss-cursor { position: absolute; z-index: 8; left: 0; width: 2px; opacity: 0; pointer-events: none; background: #3978bb; }
.ss-cursor.on { opacity: .85; }
.transport { min-height: 44px; display: grid; grid-template-columns: auto auto minmax(60px,1fr) auto auto; align-items: center; gap: 10px; padding: 6px 16px; border-top: 1px solid var(--line); background: var(--panel); }
.transport button { min-height: 30px; padding: 4px 8px; border: 0; background: none; color: var(--ink); font-size: 13px; }
.transport button:hover:not(:disabled) { background: var(--hover); }
.transport input { width: 100%; accent-color: var(--blue); }
#time-readout, #bar-readout { white-space: nowrap; color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.workbench-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 0 16px; border-top: 1px solid var(--line); color: var(--muted); background: var(--ground); font-size: 11px; }
.workbench-footer > span:nth-child(2) { display: none; }
.workbench-footer a { text-decoration: none; }
.workbench-footer a:hover { color: var(--blue); }
.embed-dialog { width: min(640px,calc(100vw - 32px)); max-height: 85vh; padding: 0; border: 1px solid #586170; border-radius: 6px; background: var(--panel); color: var(--ink); }
.embed-dialog::backdrop { background: #07090bb3; }
.dialog-card { padding: 20px; }
.dialog-card > header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.eyebrow { display: none; }
.dialog-card h2 { margin: 0; font-size: 19px; font-weight: 600; }
.dialog-close { width: 32px; height: 32px; border: 0; background: none; font-size: 24px; color: var(--muted); }
.dialog-close:hover { background: var(--hover); }
.embed-options article { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; padding: 18px 0; border-top: 1px solid var(--line); }
.embed-options article > span { display: none; }
.embed-options h3 { margin: 0 0 4px; font-size: 14px; font-weight: 550; }
.embed-options p { margin: 0; color: var(--muted); font-size: 13px; }
.embed-options code { font-family: var(--mono); }
.embed-options button, .embed-options a { display: inline-block; padding: 7px 10px; border: 1px solid #586170; border-radius: 4px; background: var(--raised); color: var(--ink); font-size: 12px; text-decoration: none; white-space: nowrap; }
.copy-status { min-height: 1.5em; margin: 12px 0 0; color: var(--muted); font-size: 12px; }
.catalog-shell { width: min(100% - 48px,1080px); margin: 0 auto; padding: 48px 0 80px; }
.catalog-lead { display: grid; grid-template-columns: 1fr 400px; gap: 40px; align-items: end; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.catalog-lead h1 { margin: 0; font-size: 28px; line-height: 1.2; font-weight: 600; letter-spacing: -.7px; }
.catalog-intro p { margin: 0 0 16px; font-size: 14px; color: var(--muted); }
.catalog-intro label { display: block; margin-bottom: 8px; font-size: 12px; color: var(--muted); }
.catalog-list article { display: grid; grid-template-columns: minmax(0,1fr) 140px 130px; gap: 24px; align-items: center; padding: 24px 0; border-bottom: 1px solid var(--line); }
.catalog-number { display: none; }
.catalog-list h2 { margin: 0 0 6px; font-size: 17px; font-weight: 550; }
.catalog-list p { max-width: 600px; margin: 0 0 10px; color: var(--muted); font-size: 13px; }
.catalog-list code { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: #bec6d2; font: 12px var(--mono); }
.catalog-list small { color: var(--muted); font-size: 12px; }
.catalog-list a { justify-self: end; color: var(--blue); font-size: 12px; text-decoration: none; }
.catalog-list a:hover { text-decoration: underline; }
.catalog-empty { padding: 24px 0; color: var(--muted); }
@media(max-width: 1000px) {
  .topbar { gap: 20px; padding-inline: 16px; }
  .paper-stage { padding: 20px; }
  .paper { padding: 28px 20px; }
  #engine-state { font-size: 11px; }
  #source-size, #render-meta { display: none; }
}
@media(max-width: 760px) {
  .topbar { height: auto; min-height: 54px; flex-wrap: wrap; gap: 8px; padding: 10px 12px; }
  .wordmark { font-size: 17px; }
  .topbar-actions { gap: 12px; }
  .primary-nav { order: 3; width: 100%; gap: 6px; }
  .primary-nav a { padding: 5px 10px; }
  .explore-main { height: auto; min-height: 0; }
  .playhouse { height: auto; grid-template-rows: auto 34px; }
  .workbench { grid-template-columns: 1fr; }
  .source-pane { height: 390px; border-right: 0; border-bottom: 1px solid var(--line); }
  .output-pane { height: min(650px,85dvh); min-height: 360px; }
  .pane-bar { padding-inline: 12px; }
  .paper-stage { padding: 16px; }
  .paper { padding: 28px 18px; min-height: 200px; }
  .picker-results { max-height: 45vh; }
  .transport { padding-inline: 12px; gap: 6px; grid-template-columns: auto auto 1fr auto; }
  #bar-readout { display: none; }
  .catalog-shell { width: calc(100% - 32px); padding-top: 28px; }
  .catalog-lead { grid-template-columns: 1fr; gap: 20px; }
  .catalog-list article { grid-template-columns: 1fr auto; gap: 12px; }
  .catalog-list article > div { grid-column: 1/-1; }
  .embed-options article { grid-template-columns: 1fr; gap: 12px; }
  .embed-options article > :last-child { justify-self: start; }
}
@media(prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

:root[data-theme="light"] { color-scheme: light; --ground: #f2f4f8; --panel: #fff; --raised: #e4e9f1; --ink: #253249; --muted: #59677c; --line: #ccd4df; --blue: #285ea2; --code: #fafbfd; --code-ink: #253249; --red: #b42c3d; --green: #487222; --stage: #dfe5ed; --caution: #8a5810; --hover: #2532490b; }
.source-workspace { min-width: 0; min-height: 0; display: grid; grid-template-columns: minmax(0,1fr); }
.source-workspace.with-wiki { grid-template-columns: minmax(0,var(--editor-width,50%)) 6px minmax(0,1fr); }
.source-pane { border-right: 0; }
.splitter { background: var(--ground); border-inline: 1px solid var(--line); cursor: col-resize; touch-action: none; position: relative; z-index: 2; }
.splitter:hover, .splitter:focus-visible { background: var(--blue); }
.resizing { cursor: col-resize; user-select: none; }
.resizing iframe, .resizing canvas { pointer-events: none; }
.wiki-pane { min-width: 0; min-height: 0; display: grid; grid-template-rows: 44px minmax(0,1fr); background: var(--panel); }
.wiki-pane h2 { margin: 0; font-size: 13px; font-weight: 500; }
.wiki-pane iframe { width: 100%; height: 100%; border: 0; }
.wiki-pane a { font-size: 11px; white-space: nowrap; }
.page-controls { display: flex; flex-wrap: wrap; gap: 8px 12px; padding: 8px 14px; border-bottom: 1px solid var(--line); background: var(--panel); color: var(--muted); font-size: 11px; align-items: center; }
.page-controls label { display: flex; align-items: center; gap: 5px; }
.page-controls select { padding: 3px; max-width: 95px; color: var(--ink); background: var(--ground); border: 1px solid var(--line); }
.layout-notes { margin: 0; padding: 7px 14px; font-size: 12px; color: var(--muted); background: var(--panel); max-height: 72px; overflow: auto; }
.with-wiki .source-pane .pane-bar { flex-wrap: wrap; padding-block: 5px; gap: 3px; }
.with-wiki .source-pane { grid-template-rows: auto minmax(0,1fr) auto; }
.with-wiki .source-pane .pane-actions { flex-wrap: wrap; }
.about-page main { max-width: 780px; margin: 0 auto; padding: 64px 28px; font-size: 16px; line-height: 1.8; }
.about-page h1 { font: 42px/1.2 Georgia, serif; margin: 0 0 30px; }
.about-page h2 { font-size: 20px; margin-top: 36px; }
.about-page p { color: var(--muted); }
.about-page .about-links { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 32px; color: var(--blue); }
@media(max-width: 760px) {
  .topbar { height: auto; min-height: 72px; }
  .workbench, .workbench.with-wiki { grid-template-columns: minmax(0,1fr); }
  #score-splitter { display: none; }
  .source-workspace.with-wiki { grid-template-columns: minmax(0,1fr); }
  #wiki-splitter { display: none; }
  .wiki-pane { height: 440px; }
  .source-pane .pane-actions { gap: 2px; }
  .source-pane .pane-bar { padding-inline: 8px; gap: 4px; }
  .auto-format { font-size: 11px; }
  .output-pane { height: 650px; }
  .workbench-footer { font-size: 10px; }
  .example-picker summary { padding-inline: 4px; }
}

.diagnostic-row { display:flex; gap:8px; align-items:start; padding:3px 0; }
.diagnostic-message { display:grid; gap:3px; width:100%; padding:0; border:0; background:none; color:inherit; text-align:left; font:inherit; }
.diagnostic-message:disabled { opacity:1; }
.diagnostic-message small { color:var(--muted); font:inherit; }
.diagnostic-row.error { color:var(--red); }
.diagnostic-row.caution { color:var(--caution); }
.dismiss-caution { border:0; background:none; color:var(--muted); font-size:18px; line-height:1; padding:4px; }
.restore-cautions { border:0; background:none; padding:4px 8px; color:var(--blue); font:inherit; text-decoration:underline; }

/* Document status shares the existing header; the removed example row gives
   its full 48px back to editing and engraving. */
.pane-bar > div.document-state { display: grid; gap: 1px; flex: 1; min-width: 0; }
#document-name, #engine-state { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#document-name { color: var(--ink); font-weight: 550; }
#engine-state { font-size: 10px; line-height: 1.2; }
.source-pane .pane-actions { flex-shrink: 0; }
.output-bar { gap: 8px; }
.output-bar > div:first-child { flex-shrink: 0; }
.output-bar .example-picker { margin-left: auto; }
.picker-popover { position: absolute; z-index: 30; right: 0; top: calc(100% + 8px); width: min(420px,calc(100vw - 24px)); padding: 12px; border: 1px solid #586170; border-radius: 6px; background: var(--panel); }
@media(max-width: 760px) {
  .output-bar { padding-inline: 8px; gap: 4px; }
  .output-bar .example-picker { position: static; }
  .output-bar { position: relative; }
  .output-bar .picker-popover { right: 8px; width: calc(100% - 16px); }
}