/* Shared Gwern-article styles - extracted from the (formerly inline) <style>
   blocks of the 7 long-form article pages. Table/h3/list rules apply to all
   articles. Page tokens live in :root here; design tokens (radius, kicker,
   type scale) come from site-shell.css :root. */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #F7F7F7;
  --bg-warm: #F7F7F7;
  --bg-card: #FFFFFF;
  --bg-dark: #1C1C1C;
  --border: #E0E0E0;
  --text-primary: #1C1C1C;
  --text-secondary: #3D3D3D;
  --text-muted: #6B6B6B;
  --accent: #7D6BF9;
  --accent-dark: #5F4FDE;
  --accent-soft: #F0EDFF;
  --sidenote-bg: rgba(240, 237, 255, 0.6);
  /* Type tokens mirror landing.css so cascade resolves identically. */
  --heading: 'Inter', sans-serif;
  --body: 'Inter', sans-serif;
  --sans: 'Inter', sans-serif;
  --serif: 'Inter', sans-serif;
  --accent-serif: 'Inter', sans-serif;
  --display: 'Inter', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--body);
  background: var(--bg);
  color: var(--text-primary);
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  counter-reset: sidenote-counter;
}

/* ── Article Layout ── */
.article-wrapper {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 3.5rem;
}
.article-main {
  max-width: 760px;
  min-width: 0;
  margin: 0 auto;
}
.article-margin { display: none; }

/* ── Article Header ── */
.article-header { padding: 10rem 0 2rem; max-width: 760px; }
.article-back {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--body); font-size: 0.68rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--text-muted); text-decoration: none;
  margin-bottom: 3rem; transition: color 0.2s ease;
}
.article-back:hover { color: var(--accent); }
.article-tags { display: flex; gap: 0.4rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.article-tag {
  font-family: var(--body); font-size: 0.6rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--accent-dark); background: var(--accent-soft);
  border: 1px solid rgba(125, 107, 249, 0.12);
  padding: 0.25rem 0.55rem; border-radius: var(--radius-sm);
}
.article-header h1 {
  font-family: var(--heading);
  font-size: var(--fs-article-1);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

/* ── Metadata ── */
.article-meta {
  display: flex; flex-wrap: wrap; gap: 0.4rem 1.8rem;
  padding: 1rem 0; border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border); margin-bottom: 0.5rem;
}
.meta-item { font-family: var(--body); font-size: 0.65rem; font-weight: 400; letter-spacing: 0.04em; color: var(--text-muted); }
.meta-label { text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent-dark); margin-right: 0.35rem; }

/* ── Epigraph ── */
.epigraph { margin: 2.5rem 0; padding: 0 0 0 1.5rem; border-left: 2px solid var(--accent); }
.epigraph p { font-family: var(--accent-serif); font-style: italic; font-size: 1.05rem; font-weight: 400; color: var(--text-secondary); line-height: 1.7; margin-bottom: 0; }

/* ── TOC ── */
.toc {
  position: sticky; top: 5.5rem;
  padding: 1.2rem 1.4rem;
  background: var(--bg-warm); border: 1px solid var(--border); border-radius: var(--radius-md);
  max-height: calc(100vh - 7rem); overflow-y: auto;
  -ms-overflow-style: none; scrollbar-width: none;
  margin-left: 2rem;
}
.toc::-webkit-scrollbar { display: none; }
.toc-title {
  font-family: var(--body); font-size: 0.58rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: var(--kicker-tracking);
  color: var(--accent-dark); margin-bottom: 0.9rem;
  padding-bottom: 0.6rem; border-bottom: 1px solid var(--border);
}
.toc ol { list-style: none; }
.toc li { margin-bottom: 0.55rem; padding-left: 0; }
.toc li:last-child { margin-bottom: 0; }
.toc a {
  font-family: var(--body); font-size: 0.7rem; font-weight: 400;
  color: var(--text-muted); text-decoration: none;
  transition: color 0.2s ease; line-height: 1.45; display: block;
}
.toc a:hover, .toc a.active { color: var(--accent); }

/* ── Article Body ── */
.article-body { padding: 0 0 2rem; }
.article-body p {
  font-family: var(--body); font-size: 0.94rem; font-weight: 400;
  color: var(--text-secondary); line-height: 1.85;
  margin-bottom: 1.4rem; hanging-punctuation: first last;
}

/* ── Small Caps ── */
.sc {
  font-variant: normal;
  font-size: inherit;
  letter-spacing: 0;
  font-weight: inherit;
}

/* ── Section Headings ── */
.article-body h2 {
  font-family: var(--serif); font-size: 1.55rem; font-weight: 400;
  color: var(--text-primary); margin-top: 3.5rem; margin-bottom: 1.25rem;
  line-height: 1.3; position: relative;
}
.article-body h2 .section-link {
  color: var(--border); text-decoration: none;
  font-size: 0.85em; margin-left: 0.3em;
  opacity: 0; transition: opacity 0.2s ease, color 0.2s ease;
  vertical-align: baseline;
}
.article-body h2:hover .section-link { opacity: 1; }
.article-body h2 .section-link:hover { color: var(--accent); }

/* ── Section Divider ── */
.section-divider { border: none; border-top: 1px solid var(--border); margin: 3rem 0 0; max-width: 6rem; }

/* ── Sidenotes ── */
.sidenote-ref { counter-increment: sidenote-counter; position: relative; }
.sidenote-ref::after {
  content: none;
}
.sidenote {
  display: block;
  font-family: var(--body);
  font-size: 0.78rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-secondary);
  width: auto;
  position: relative;
  right: auto;
  margin: 0.85rem 0 1.1rem;
  padding: 0.85rem 1rem;
  background: var(--accent-soft);
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.sidenote::before {
  content: 'Note';
  display: block;
  font-size: 0.58rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 0.45rem;
}

/* ── Admonition ── */
.admonition {
  background: var(--accent-soft); border-left: 3px solid var(--accent);
  padding: 1.25rem 1.5rem; margin: 2rem 0; border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.admonition-title {
  font-family: var(--body); font-size: 0.68rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--accent-dark); margin-bottom: 0.5rem;
}
.admonition p { font-size: 0.88rem; margin-bottom: 0; }

/* ── Blockquote ── */
.article-body blockquote { border-left: 2px solid var(--accent); padding-left: 1.5rem; margin: 2rem 0; }
.article-body blockquote p { font-family: var(--accent-serif); font-style: italic; font-size: 1.05rem; color: var(--text-primary); line-height: 1.7; }

/* ── Links & Emphasis ── */
.article-body a { color: var(--accent-dark); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.2s ease; }
.article-body a:hover { border-bottom-color: var(--accent-dark); }
.article-body em { font-family: var(--accent-serif); font-style: italic; }
.article-body strong { font-weight: 600; color: var(--text-primary); }

/* ── Tables ── */
.article-body table {
  width: 100%;
  max-width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.82rem;
}
.article-table-scroll {
  max-width: 100%;
  margin: 2rem 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-color: rgba(92, 74, 230, 0.45) var(--accent-soft);
  scrollbar-width: thin;
}
.article-table-scroll table {
  margin: 0;
  min-width: 40rem;
}
.article-table-scroll:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.article-table-scroll::-webkit-scrollbar {
  height: 0.45rem;
}
.article-table-scroll::-webkit-scrollbar-track {
  background: var(--accent-soft);
  border-radius: 999px;
}
.article-table-scroll::-webkit-scrollbar-thumb {
  background: rgba(92, 74, 230, 0.45);
  border-radius: 999px;
}
.article-body th { font-family: var(--body); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.68rem; color: var(--accent-dark); background: var(--accent-soft); padding: 0.75rem 1rem; text-align: left; border-bottom: 2px solid var(--accent-dark); min-width: 8.5rem; }
.article-body td { font-family: var(--body); padding: 0.75rem 1rem; color: var(--text-secondary); border-bottom: 1px solid var(--border); line-height: 1.6; min-width: 8.5rem; }
.article-body tr:last-child td { border-bottom: none; }
.article-body tbody tr:hover { background: rgba(125, 107, 249, 0.03); }

/* ── H3 ── */
.article-body h3 { font-family: var(--heading); font-size: 1.1rem; font-weight: 600; color: var(--text-primary); margin-top: 2.5rem; margin-bottom: 0.8rem; line-height: 1.4; }

/* ── Lists ── */
.article-body ul, .article-body ol { margin: 1rem 0 1.4rem 1.5rem; }
.article-body li { font-family: var(--body); font-size: 0.94rem; color: var(--text-secondary); line-height: 1.85; margin-bottom: 0.5rem; }

/* ── Article End CTA ── */
.article-end-cta {
  margin-top: 3rem;
  background:
    radial-gradient(ellipse 70% 65% at 50% 0%, rgba(125, 107, 249, 0.16), transparent 70%),
    var(--dark-card-grad);
  padding: 3.5rem 2.5rem; text-align: center;
  border: 1px solid rgba(199, 199, 199, 0.16);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.article-end-cta-text {
  font-family: var(--serif); font-size: 1.4rem; font-weight: 400;
  color: #F1F5F9; line-height: 1.4; margin-bottom: 1.5rem;
  max-width: 500px; margin-left: auto; margin-right: auto;
}
.article-end-cta-link {
  display: inline-block; font-family: var(--body);
  font-size: 0.78rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: #FFFFFF; background: var(--accent-dark);
  padding: 1rem 2rem; border-radius: 999px;
  text-decoration: none; border-bottom: none;
  transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.article-end-cta-link:hover { background: #4A3CC9; color: #FFFFFF; border-color: transparent; transform: translateY(-1px); box-shadow: 0 10px 24px rgba(0, 0, 0, 0.28); }
.article-end-cta-link:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(0, 0, 0, 0.24); }

/* ── Focus ── */
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ── Responsive ── */
@media (max-width: 1000px) {
  .article-wrapper { padding: 0 2rem; }
  .article-main { max-width: 760px; }
  .article-header { padding: 8rem 0 2rem; }
}

@media (max-width: 480px) {
  .article-wrapper { padding: 0 1.5rem; }
  .article-header { padding: 6rem 0 1.5rem; }
  .article-body { padding: 0 0 3rem; }
  .article-table-scroll {
    margin: 1.5rem 0;
    box-shadow: inset -18px 0 18px -18px rgba(28, 28, 28, 0.35);
  }
  .article-table-scroll table { min-width: 38rem; }
  .article-body th, .article-body td { min-width: 7.5rem; }
  .article-end-cta { padding: 2.5rem 1.5rem; border-radius: 0; }
  .article-end-cta-text { font-size: 1.2rem; }
}