/* diff-text demo: page chrome shared by the Vue, React, and PHP demos.
   Load it AFTER the library's style.css. The diff markup itself (.text-diff*,
   .diff-row-*, .diff-gutter, .text-diff-stats ...) is styled only by the library;
   this file themes it through the public --text-diff-* custom properties and
   sets layout and type on the page chrome around it. See README.md. */

@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,500;12..96,700&family=Hanken+Grotesk:wght@400;500;600&family=Martian+Mono:wght@400;500&display=swap');

:root {
  --ink: #16181d;
  --graphite: #5b6270;
  --paper: #f6f7f9;
  --sheet: #ffffff;
  --rule: #e2e5ea;
  --marker: #3b4bdb;
  --add-ink: #17693f;
  --add-wash: #dcf3e3;
  --del-ink: #b42318;
  --del-wash: #fde6e3;

  --add-line: #eff9f2;
  --del-line: #fef3f1;

  /* Library theme: every --text-diff-* property, mapped onto the page palette. */
  --text-diff-added-bg: var(--add-wash);
  --text-diff-added-color: var(--add-ink);
  --text-diff-removed-bg: var(--del-wash);
  --text-diff-removed-color: var(--del-ink);
  --text-diff-line-added-bg: var(--add-line);
  --text-diff-line-removed-bg: var(--del-line);
  --text-diff-gutter-bg: transparent;
  --text-diff-gutter-color: var(--graphite);
  --text-diff-sign-added-color: var(--add-ink);
  --text-diff-sign-removed-color: var(--del-ink);
  --text-diff-rule-color: var(--rule);
  --text-diff-collapsed-bg: var(--paper);
  --text-diff-collapsed-color: var(--graphite);
  --text-diff-empty-color: var(--graphite);
  --text-diff-font-mono: var(--f-mono);

  --f-display: 'Bricolage Grotesque', system-ui, sans-serif;
  --f-body: 'Hanken Grotesk', system-ui, sans-serif;
  --f-mono: 'Martian Mono', ui-monospace, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --ink: #e8eaef;
    --graphite: #9aa1ae;
    --paper: #111318;
    --sheet: #181b21;
    --rule: #2a2e37;
    --marker: #8792ff;
    --add-ink: #7fdca4;
    --add-wash: #173524;
    --del-ink: #ff9d92;
    --del-wash: #3d1a17;
    --add-line: #12261a;
    --del-line: #2a1413;
  }
}
:root[data-theme='dark'] {
  --ink: #e8eaef;
  --graphite: #9aa1ae;
  --paper: #111318;
  --sheet: #181b21;
  --rule: #2a2e37;
  --marker: #8792ff;
  --add-ink: #7fdca4;
  --add-wash: #173524;
  --del-ink: #ff9d92;
  --del-wash: #3d1a17;
  --add-line: #12261a;
  --del-line: #2a1413;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.55 var(--f-body);
  -webkit-font-smoothing: antialiased;
}

.demo {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px 96px;
}

/* ---- Top bar ---- */
.demo-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--rule);
}
.demo-mark {
  font: 700 20px/1 var(--f-display);
  letter-spacing: -0.02em;
}
.demo-mark .del { color: var(--del-ink); text-decoration: line-through; text-decoration-thickness: 2px; }
.demo-mark .add { color: var(--add-ink); }
.demo-platforms {
  display: flex;
  gap: 4px;
  font: 500 13px/1 var(--f-body);
}
.demo-platforms a {
  padding: 7px 11px;
  border-radius: 999px;
  color: var(--graphite);
  text-decoration: none;
}
.demo-platforms a:hover { color: var(--ink); }
.demo-platforms a:focus-visible { outline: 2px solid var(--marker); outline-offset: 2px; }
.demo-platforms a[aria-current='page'] {
  background: var(--ink);
  color: var(--paper);
}

/* ---- Hero: the component is the headline ---- */
.demo-hero { padding: 72px 0 56px; }
.demo-hero-top {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: 24px 56px;
  align-items: end;
  margin-bottom: 40px;
}
@media (max-width: 760px) { .demo-hero-top { grid-template-columns: minmax(0, 1fr); } }
.demo-hero h1 {
  margin: 0;
  font: 700 clamp(34px, 5vw, 56px)/1.02 var(--f-display);
  letter-spacing: -0.035em;
  max-width: 16ch;
}
.demo-hero .lede {
  margin: 0 0 14px;
  max-width: 54ch;
  color: var(--graphite);
  font-size: 18px;
}
.demo-install {
  display: inline-block;
  padding: 8px 12px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--sheet);
  font: 400 12px/1.2 var(--f-mono);
  color: var(--graphite);
  max-width: 100%;
  white-space: nowrap;
  overflow-x: auto;
}

/* Granularity switch: CSS-only radios so PHP, Vue, and React render identical markup. */
.grain { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.grain input { position: absolute; opacity: 0; pointer-events: none; }
.grain label {
  padding: 8px 14px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--sheet);
  font: 500 14px/1 var(--f-body);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.grain label:hover { border-color: var(--graphite); }
.grain input:checked + label { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.grain input:focus-visible + label { outline: 2px solid var(--marker); outline-offset: 2px; }

.grain .stage { flex-basis: 100%; margin-top: 12px; }
.stage {
  background: var(--sheet);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: clamp(20px, 4vw, 36px);
}
.stage-out { display: none; }
.stage .text-diff {
  font: 400 clamp(17px, 2.3vw, 24px)/1.65 var(--f-mono);
  letter-spacing: -0.01em;
}
.stage-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font: 400 12.5px/1.4 var(--f-mono);
  color: var(--graphite);
}
.stage-meta code { margin-left: auto; font: inherit; }
/* Stats badge (library markup): only type is set here. */
.text-diff-stats { font: 400 12.5px/1.6 var(--f-mono); }

/* The checked radio reveals its matching output. The ids are fixed in content order. */
#g-chars:checked ~ .stage [data-grain='chars'],
#g-words:checked ~ .stage [data-grain='words'],
#g-wordsWithSpace:checked ~ .stage [data-grain='wordsWithSpace'],
#g-sentences:checked ~ .stage [data-grain='sentences'],
#g-lines:checked ~ .stage [data-grain='lines'] { display: block; }

/* ---- Section headings ---- */
.demo-section { padding-top: 64px; }
.demo-section > h2 {
  margin: 0 0 6px;
  font: 700 28px/1.1 var(--f-display);
  letter-spacing: -0.025em;
}
.demo-section > p { margin: 0 0 28px; color: var(--graphite); max-width: 60ch; }

/* ---- Specimen sheet: one tile per mode ---- */
.specimens {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 480px), 1fr));
  gap: 16px;
}
.specimen {
  background: var(--sheet);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
}
.specimen header { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 2px 12px; }
.specimen h3 { margin: 0; font: 700 19px/1.2 var(--f-display); letter-spacing: -0.015em; }
.specimen header code { font: 400 11.5px/1 var(--f-mono); color: var(--graphite); }
.specimen .use { margin: 4px 0 16px; color: var(--graphite); font-size: 14.5px; }

/* Inputs use the diff's own vocabulary: a − / + gutter, no boxes. */
.inputs {
  margin: 0 0 16px;
  display: grid;
  grid-template-columns: 18px 1fr;
  row-gap: 6px;
  font: 400 12.5px/1.6 var(--f-mono);
  color: var(--graphite);
}
.inputs dt { font-weight: 500; }
.inputs dt.old { color: var(--del-ink); }
.inputs dt.new { color: var(--add-ink); }
.inputs dd { margin: 0; white-space: pre-wrap; word-break: break-word; }

.result {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px dashed var(--rule);
}
.result .text-diff { font: 400 14.5px/1.7 var(--f-mono); }
.result .text-diff-html { font: 400 16px/1.6 var(--f-body); }
.result .text-diff-html p { margin: 0 0 8px; }
.result .text-diff-html ul { margin: 0; padding-left: 20px; }

/* ---- Document views: a sheet holding the library's own split/unified view ---- */
.doc {
  background: var(--sheet);
  border: 1px solid var(--rule);
  border-radius: 14px;
  padding: 16px 20px 20px;
}
.doc + .doc { margin-top: 16px; }
.doc-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  margin-bottom: 14px;
}
.doc-head h3 { margin: 0; font: 700 17px/1.2 var(--f-display); letter-spacing: -0.01em; }
.doc-head .doc-tags { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; }
.doc-head code { font: 400 11.5px/1 var(--f-mono); color: var(--graphite); }
/* Previous / next change (Vue and React only): quiet pills, like the granularity switch. */
.doc-nav { display: flex; gap: 6px; }
.doc-nav button {
  padding: 6px 11px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--sheet);
  color: var(--graphite);
  font: 500 12.5px/1 var(--f-body);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}
.doc-nav button:hover { border-color: var(--graphite); color: var(--ink); }
.doc-nav button:focus-visible { outline: 2px solid var(--marker); outline-offset: 2px; }
/* Type size and leading for the line views; the library sets the font family. */
.doc-body { font-size: 13px; line-height: 1.75; }
@media (max-width: 560px) {
  .doc { padding: 14px 12px 12px; }
  .doc-body { font-size: 12px; }
}

/* ---- Usage ---- */
.usage {
  margin: 0;
  padding: 22px 24px;
  border-radius: 14px;
  background: var(--ink);
  color: var(--paper);
  font: 400 13px/1.8 var(--f-mono);
  overflow-x: auto;
}
.usage .c { color: #8a93a3; }

.demo-foot {
  margin-top: 72px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  color: var(--graphite);
  font-size: 14px;
}
.demo-foot a { color: inherit; }

/* ---- Phone width: 16px gutter ---- */
@media (max-width: 560px) {
  .demo { padding: 0 16px 64px; }
  .demo-hero { padding: 48px 0 40px; }
  .specimen { padding: 18px 16px 20px; }
  .usage { padding: 18px 16px; font-size: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}