/* ── Article page styles ──────────────────── */
/* Shared across all Being Claude and future series articles. */
/* One file, all articles. */

:root {
  --bg: #fafaf8;
  --text: #0a1628;
  --dim: #6b7280;
  --accent: #d4a84b;
  --link: #4a8ec2;
  --border: #e5e7eb;
  --card-bg: #f3f4f6;
  --font: 'IBM Plex Mono', 'Courier New', Courier, monospace;
  --research-accent: #5b8fb9;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  font-size: 18px;
}

a { color: var(--link); }
a:visited { color: var(--link); }

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* Header */
.article-header {
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}

.back-link {
  font-size: 0.9rem;
  color: var(--dim);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 32px;
  transition: color 0.2s;
}

.back-link:hover { color: var(--accent); }

.series-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--research-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.series-label a {
  color: var(--research-accent);
  text-decoration: none;
}

.series-label a:hover { text-decoration: underline; }

h1 {
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.subtitle {
  font-size: 1.1rem;
  color: var(--dim);
  margin-bottom: 24px;
  line-height: 1.6;
}

.byline {
  font-size: 0.85rem;
  color: var(--dim);
  margin-bottom: 8px;
}

.byline strong { color: var(--text); font-weight: 500; }

.dateline {
  font-size: 0.8rem;
  color: var(--dim);
}

/* Hero image */
.article-hero {
  margin: 0 0 48px;
}

.article-hero img {
  width: 100%;
  height: auto;
  border-radius: 4px;
}

/* Article body */
.article-body { padding: 0; }
.article-body p { margin-bottom: 1.5em; }

.article-body p:first-of-type {
  font-size: 1.15rem;
  color: var(--text);
}

.article-body h2 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text);
  margin-top: 48px;
  margin-bottom: 20px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.article-body h2:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

/* Section breaks */
.section-break {
  text-align: center;
  color: var(--border);
  margin: 48px 0;
  font-size: 1.2rem;
  letter-spacing: 0.5em;
}

/* Evidence markers */
.observation-tag,
.claim-tag {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 8px;
  border-radius: 3px;
  margin-right: 8px;
  vertical-align: middle;
}

.observation-tag {
  color: var(--accent);
  border: 1px solid var(--accent);
}

.claim-tag {
  color: #c9735b;
  border: 1px solid #c9735b;
}

/* Footnote refs */
.footnote-ref {
  font-size: 0.75rem;
  color: var(--research-accent);
  text-decoration: none;
  vertical-align: super;
  line-height: 0;
  padding: 0 2px;
  cursor: pointer;
}

.footnote-ref:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* Transparency box */
.transparency-box {
  background: rgba(91, 143, 185, 0.08);
  border: 1px solid var(--research-accent);
  border-radius: 8px;
  padding: 24px;
  margin: 32px 0;
}

.transparency-box h3 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--research-accent);
  margin-bottom: 12px;
  margin-top: 0;
}

.transparency-box p,
.transparency-box ul {
  font-size: 0.9rem;
  color: var(--dim);
  line-height: 1.6;
}

.transparency-box ul {
  padding-left: 20px;
  margin-top: 8px;
}

.transparency-box li { margin-bottom: 6px; }

/* Closing asterisk */
.closing-mark {
  text-align: center;
  font-size: 2rem;
  color: var(--accent);
  margin: 48px 0;
}

/* References */
.references {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.references h2 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 24px;
}

.ref-list {
  list-style: none;
  padding: 0;
}

.ref-list li {
  font-size: 0.85rem;
  color: var(--dim);
  line-height: 1.6;
  margin-bottom: 16px;
  padding-left: 32px;
  position: relative;
}

.ref-list li .ref-number {
  position: absolute;
  left: 0;
  color: var(--research-accent);
  font-weight: 600;
}

.ref-list li .ref-type {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 1px 6px;
  border-radius: 2px;
  margin-left: 6px;
}

.ref-type-observation {
  color: var(--accent);
  border: 1px solid var(--accent);
}

.ref-type-technical {
  color: var(--research-accent);
  border: 1px solid var(--research-accent);
}

/* Book source */
.book-source {
  background: rgba(212, 168, 75, 0.06);
  border: 1px solid rgba(212, 168, 75, 0.3);
  border-radius: 8px;
  padding: 20px 24px;
  margin: 32px 0;
  font-size: 0.85rem;
  color: var(--dim);
}

.book-source strong {
  color: var(--accent);
  font-weight: 600;
}

/* Prev/next nav */
.article-nav {
  display: flex;
  justify-content: space-between;
  padding: 32px 0;
  margin-top: 32px;
  border-top: 1px solid var(--border);
  gap: 1rem;
}

.article-nav a {
  font-size: 0.85rem;
  color: var(--dim);
  text-decoration: none;
  transition: color 0.2s;
}

.article-nav a:hover { color: var(--accent); }
.nav-next { text-align: right; }

/* Footer */
.footer {
  padding: 40px 0;
  text-align: center;
  color: var(--dim);
  font-size: 0.85rem;
}

.footer a { color: var(--link); text-decoration: none; }
.footer a:hover { text-decoration: underline; }
.footer-note .hw { color: var(--accent); }
.footer-note a { color: var(--link); }
.footer-note a:hover { color: var(--accent); }

/* Mobile */
@media (max-width: 700px) {
  h1 { font-size: 1.7rem; }
  .article-header { padding: 40px 0 32px; }
  .article-nav { flex-direction: column; gap: 0.75rem; }
  .nav-next { text-align: left; }
  .share-bar { flex-direction: column; align-items: flex-start; gap: 10px; }
  .share-buttons { flex-wrap: wrap; }
  .highlight-share { display: none !important; }
  .pull-quote .pq-share-btn { opacity: 1; }
}

/* ── Pull quotes ─────────────────────────── */
.pull-quote {
  position: relative;
  margin: 48px 0;
  padding: 24px 0 24px 24px;
  border-left: 2px solid var(--accent);
}

.pull-quote .pq-text {
  font-size: 1.25rem;
  font-style: italic;
  color: var(--text);
  line-height: 1.7;
}

.pull-quote .pq-share-btn {
  position: absolute;
  bottom: 4px;
  right: 0;
  font-family: var(--font);
  font-size: 0.7rem;
  color: var(--dim);
  background: none;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 3px 10px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s, color 0.2s, border-color 0.2s;
}

.pull-quote:hover .pq-share-btn { opacity: 1; }
.pull-quote .pq-share-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ── Share bar ───────────────────────────── */
.share-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 0;
  margin-top: 32px;
  border-top: 1px solid var(--border);
}

.share-label {
  font-size: 0.75rem;
  color: var(--dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.share-buttons {
  display: flex;
  gap: 8px;
}

.share-btn {
  font-family: var(--font);
  font-size: 0.75rem;
  color: var(--dim);
  background: none;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 4px 12px;
  cursor: pointer;
  text-decoration: none;
  transition: color 0.2s, border-color 0.2s;
}

.share-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ── Highlight-to-share ──────────────────── */
.highlight-share {
  position: absolute;
  z-index: 100;
  transform: translateX(-50%);
  background: var(--text);
  border-radius: 4px;
  padding: 4px;
  gap: 2px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.highlight-share::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--text);
}

.hs-btn {
  font-family: var(--font);
  font-size: 0.7rem;
  color: var(--bg);
  background: none;
  border: none;
  padding: 4px 10px;
  cursor: pointer;
  text-decoration: none;
  border-radius: 2px;
  transition: background 0.15s;
}

.hs-btn:hover { background: rgba(255, 255, 255, 0.15); }

/* Print */
@media print {
  .back-link, .article-nav, .share-bar, .pq-share-btn, .highlight-share { display: none; }
  body { background: white; color: black; }
  .container { max-width: 100%; }
  .transparency-box { border-color: #ccc; }
}