/* ============================================================
   You Never Die — companion site v2
   Light + Dark theme · Cover-inspired (black + warm gold)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@500;600;700&family=Source+Serif+4:opsz,wght@8..60,400;8..60,600&family=Inter:wght@400;500;600;700&display=swap');

/* ---------- Theme tokens ---------- */
:root {
  --bg:          #fbf8f2;
  --bg-alt:      #f3ecdd;
  --bg-deep:     #ece2c8;
  --surface:     #ffffff;
  --text:        #1a1714;
  --text-soft:   #3d3730;
  --text-muted:  #6f675b;
  --accent:      #9a7134;
  --accent-soft: #b88d52;
  --accent-hover:#7a5826;
  --accent-bg:   rgba(154, 113, 52, 0.08);
  --border:      #e8dfc9;
  --border-soft: #f1ead9;
  --shadow:      0 4px 20px rgba(40, 30, 10, 0.06);
  --shadow-lg:   0 12px 40px rgba(40, 30, 10, 0.10);
  --focus-ring:  0 0 0 3px rgba(154, 113, 52, 0.25);

  /* Diagram colors */
  --diagram-bg:     transparent;
  --diagram-stroke: #9a7134;
  --diagram-soft:   #b88d52;
  --diagram-text:   #1a1714;
  --diagram-muted:  #6f675b;
  --diagram-ghost:  #d8c8a8;
  --diagram-grid:   #d8cdb1;

  --font-display: 'Cormorant Garamond', 'Iowan Old Style', Georgia, 'Times New Roman', serif;
  --font-serif:   'Source Serif 4', 'Source Serif Pro', 'Iowan Old Style', Charter, Georgia, 'Times New Roman', serif;
  --font-ui:      'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;

  --max-content: 44rem;
  --max-wide:    72rem;
  --max-toc:     86rem;
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --bg:          #0a0a0a;
    --bg-alt:      #15120e;
    --bg-deep:     #1a1612;
    --surface:     #17140f;
    --text:        #ede5d2;
    --text-soft:   #d4caaf;
    --text-muted:  #8f867a;
    --accent:      #c9a96e;
    --accent-soft: #a88848;
    --accent-hover:#e6c58a;
    --accent-bg:   rgba(201, 169, 110, 0.10);
    --border:      #2d2619;
    --border-soft: #1f1a11;
    --shadow:      0 4px 20px rgba(0, 0, 0, 0.35);
    --shadow-lg:   0 12px 40px rgba(0, 0, 0, 0.55);
    --focus-ring:  0 0 0 3px rgba(201, 169, 110, 0.35);
    --diagram-stroke: #c9a96e;
    --diagram-soft:   #a88848;
    --diagram-text:   #ede5d2;
    --diagram-muted:  #8f867a;
    --diagram-ghost:  #3a2f1a;
    --diagram-grid:   #2d2619;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg:          #0a0a0a;
  --bg-alt:      #15120e;
  --bg-deep:     #1a1612;
  --surface:     #17140f;
  --text:        #ede5d2;
  --text-soft:   #d4caaf;
  --text-muted:  #8f867a;
  --accent:      #c9a96e;
  --accent-soft: #a88848;
  --accent-hover:#e6c58a;
  --accent-bg:   rgba(201, 169, 110, 0.10);
  --border:      #2d2619;
  --border-soft: #1f1a11;
  --shadow:      0 4px 20px rgba(0, 0, 0, 0.35);
  --shadow-lg:   0 12px 40px rgba(0, 0, 0, 0.55);
  --focus-ring:  0 0 0 3px rgba(201, 169, 110, 0.35);
  --diagram-stroke: #c9a96e;
  --diagram-soft:   #a88848;
  --diagram-text:   #ede5d2;
  --diagram-muted:  #8f867a;
  --diagram-ghost:  #3a2f1a;
  --diagram-grid:   #2d2619;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color .2s ease, color .2s ease;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; transition: color .15s; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: none; box-shadow: var(--focus-ring); border-radius: var(--radius-sm); }
kbd {
  display: inline-block;
  padding: 0.15rem 0.4rem;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--bg-alt);
  color: var(--text-soft);
  margin: 0 0.15rem;
}

.container { max-width: var(--max-content); margin: 0 auto; padding: 0 1.5rem; }
.wide      { max-width: var(--max-wide);    margin: 0 auto; padding: 0 1.5rem; }

.hide-sm { display: inline-block; }
@media (max-width: 720px) { .hide-sm { display: none; } }

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: saturate(180%) blur(8px);
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  position: sticky; top: 0; z-index: 50;
}
.site-header-inner {
  max-width: var(--max-toc);
  margin: 0 auto;
  padding: 0.95rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.site-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: 0.01em;
  color: var(--text);
  white-space: nowrap;
}
.site-title em { color: var(--accent); font-style: italic; }
.site-nav { display: flex; align-items: center; gap: 0.25rem; }
.site-nav a {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
}
.site-nav a:hover { color: var(--text); background: var(--bg-alt); }

.icon-btn, .theme-toggle {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  width: 34px; height: 34px;
  border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer; padding: 0;
  margin-left: 0.25rem;
  transition: border-color .15s, color .15s;
}
.icon-btn:hover, .theme-toggle:hover { color: var(--accent); border-color: var(--accent); }
.icon-btn svg, .theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }
:root[data-theme="dark"] .theme-toggle .sun { display: block; }
:root[data-theme="dark"] .theme-toggle .moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .theme-toggle .sun { display: block; }
  :root:not([data-theme]) .theme-toggle .moon { display: none; }
}

@media (max-width: 640px) {
  .site-nav a { padding: 0.3rem 0.5rem; font-size: 0.85rem; }
  .site-title { font-size: 1.05rem; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 5rem 1.5rem 4rem;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 20% 0%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 60%),
    radial-gradient(ellipse at 80% 100%, color-mix(in srgb, var(--accent) 6%, transparent), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
  border-bottom: 1px solid var(--border);
}
.hero-grid {
  max-width: var(--max-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 3.5rem;
  align-items: center;
}
.hero-text { max-width: 34rem; }
.hero-kicker {
  font-family: var(--font-ui);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 1.25rem;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.5vw, 4.5rem);
  font-weight: 600;
  letter-spacing: -0.005em;
  line-height: 1.02;
  margin: 0 0 1.25rem;
}
.hero h1 em { font-style: italic; color: var(--accent); }
.hero .subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  color: var(--text-soft);
  margin: 0 0 2rem;
  line-height: 1.5;
}
.hero-ctas { display: flex; gap: 0.75rem; flex-wrap: wrap; }

.hero-cover { display: flex; justify-content: center; align-items: center; }
.hero-cover img {
  max-width: 340px;
  width: 100%;
  border-radius: 4px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15), 0 24px 60px rgba(0,0,0,0.25), 0 40px 100px rgba(0,0,0,0.15);
  transform: rotate(-2deg);
  transition: transform .4s cubic-bezier(.2,.9,.3,1);
}
.hero-cover img:hover { transform: rotate(0deg) scale(1.02); }

@media (max-width: 860px) {
  .hero { padding: 3rem 1.5rem 3rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-cover { order: -1; }
  .hero-cover img { max-width: 240px; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.4rem;
  border-radius: 999px;
  border: 1px solid var(--accent);
  cursor: pointer;
  transition: all .15s ease;
  letter-spacing: 0.01em;
}
.btn-primary { background: var(--accent); color: #fff; }
:root[data-theme="dark"] .btn-primary { color: #0a0a0a; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .btn-primary { color: #0a0a0a; }
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-secondary { background: transparent; color: var(--accent); }
.btn-secondary:hover { background: var(--accent); color: #fff; }
:root[data-theme="dark"] .btn-secondary:hover { color: #0a0a0a; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .btn-secondary:hover { color: #0a0a0a; }
}

/* ---------- Article / Prose ---------- */
article.prose { padding: 2.5rem 0 3.5rem; }
article.prose h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.1;
  margin: 0 0 1rem;
}
article.prose .eyebrow,
.eyebrow {
  font-family: var(--font-ui);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 1rem;
}
article.prose .deck {
  font-size: 1.2rem;
  color: var(--text-soft);
  line-height: 1.55;
  margin: 0 0 1.5rem;
  font-style: italic;
  font-weight: 400;
}
article.prose .meta-row {
  display: flex; flex-wrap: wrap; gap: 1rem;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 1rem 0;
  margin: 0 0 2rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
article.prose .meta-item { display: inline-flex; align-items: center; gap: 0.3rem; }
article.prose .meta-item a { color: var(--accent); }
article.prose h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  margin: 3rem 0 0.75rem;
  line-height: 1.2;
  letter-spacing: -0.005em;
  scroll-margin-top: 80px;
}
article.prose h3 {
  font-family: var(--font-ui);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 2rem 0 0.5rem;
  color: var(--text);
}
article.prose p { margin: 0 0 1.2rem; }
article.prose p.opening { font-size: 1.05rem; color: var(--text-soft); }
article.prose a {
  color: var(--accent);
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
}
article.prose a:hover { color: var(--accent-hover); border-bottom-color: var(--accent-hover); }
article.prose em { color: var(--text-soft); }
article.prose strong { color: var(--text); font-weight: 600; }
article.prose ul, article.prose ol { padding-left: 1.5rem; margin: 0 0 1.2rem; }
article.prose li { margin-bottom: 0.4rem; }

article.prose blockquote {
  margin: 1.75rem 0;
  padding: 0.25rem 0 0.25rem 1.75rem;
  border-left: 3px solid var(--accent);
  color: var(--text-soft);
  font-style: italic;
}
article.prose blockquote.pullquote {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.35;
  font-style: italic;
  color: var(--text);
  font-weight: 500;
  border-left: none;
  text-align: center;
  margin: 2.5rem auto;
  max-width: 36rem;
  padding: 0 1.5rem;
  position: relative;
}
article.prose blockquote.pullquote::before,
article.prose blockquote.pullquote::after {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  background: var(--accent);
  margin: 1rem auto;
  opacity: 0.5;
}

/* ---------- Section heads ---------- */
.section { padding: 3.5rem 0 1rem; }
.section-head { margin-bottom: 2rem; text-align: center; }
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600;
  margin: 0 0 0.5rem;
  letter-spacing: -0.005em;
  color: var(--text);
}
.section-head p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 40rem;
  margin: 0 auto;
  line-height: 1.55;
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.5rem 1.3rem;
  text-decoration: none;
  color: inherit;
  display: block;
  position: relative;
  overflow: hidden;
  transition: transform .2s ease, border-color .15s, box-shadow .2s;
}
.card::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity .2s;
}
.card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 60%, var(--border));
  box-shadow: var(--shadow);
}
.card:hover::before { opacity: 1; }
.card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 0.5rem;
  line-height: 1.25;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.005em;
}
.card p {
  font-family: var(--font-serif);
  font-size: 0.98rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
}
.card .kicker {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 0.75rem;
  display: block;
}

/* ---------- Tags ---------- */
.tag {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}

/* ---------- Book promo ---------- */
.book-promo {
  background: var(--bg-alt);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  margin: 3rem 0 0.5rem;
  display: flex;
  gap: 2rem;
  align-items: center;
  flex-wrap: wrap;
}
.book-promo .promo-cover { width: 140px; flex-shrink: 0; }
.book-promo .promo-cover img { width: 100%; border-radius: 3px; box-shadow: 0 10px 30px rgba(0,0,0,0.2); }
.book-promo .promo-text { flex: 1; min-width: 240px; }
.book-promo h3 {
  font-family: var(--font-display);
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
}
.book-promo p { margin: 0 0 1rem; color: var(--text-soft); font-size: 1rem; line-height: 1.55; }
.book-promo .ctas { display: flex; gap: 0.5rem; flex-wrap: wrap; }

/* ---------- Chapter nav ---------- */
.chapter-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  padding: 2rem 0 1rem;
  margin-top: 3rem;
  border-top: 1px solid var(--border);
}
.chapter-nav a {
  display: block;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: inherit;
  border-bottom-style: solid !important;
  background: transparent;
  transition: border-color .15s, background-color .15s;
}
.chapter-nav a:hover { border-color: var(--accent-soft); background: var(--bg-alt); }
.chapter-nav .nav-dir {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
}
.chapter-nav .nav-title {
  display: block;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 0.3rem;
  color: var(--text);
}
.chapter-nav .nav-right { text-align: right; }
.chapter-nav .nav-placeholder { visibility: hidden; }

/* ---------- TOC (book) ---------- */
.toc-part {
  margin: 2.5rem 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.toc-part:first-of-type { border-top: none; padding-top: 0; }
.toc-part h2 {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 1.25rem;
}
.toc-part h2 a { color: var(--accent); border: none; }
.toc-chapters { list-style: none; padding: 0; margin: 0; }
.toc-chapters li {
  display: grid;
  grid-template-columns: 2.5rem 1fr auto;
  align-items: baseline;
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border-soft);
  transition: padding-left .15s;
}
.toc-chapters li:hover { padding-left: 0.5rem; }
.toc-chapters .ch-num {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
  font-feature-settings: "tnum";
}
.toc-chapters .ch-title { font-family: var(--font-display); font-size: 1.15rem; }
.toc-chapters .ch-title a { color: var(--text); border-bottom: none; font-weight: 500; }
.toc-chapters .ch-title a:hover { color: var(--accent); }
.toc-chapters .ch-time {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ---------- Glossary ---------- */
.glossary { margin-top: 1.5rem; }
.glossary dt {
  font-family: var(--font-ui);
  font-weight: 700;
  margin-top: 1.5rem;
  color: var(--text);
  font-size: 1rem;
  scroll-margin-top: 80px;
}
.glossary dt a {
  color: var(--accent);
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
}
.glossary dd {
  margin: 0.4rem 0 0;
  color: var(--text-soft);
  font-family: var(--font-serif);
  font-size: 1.02rem;
}

/* ---------- See also ---------- */
.see-also {
  margin: 2.5rem 0 1rem;
  padding: 1.5rem 1.75rem;
  background: var(--bg-alt);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent);
}
.see-also h3 {
  margin: 0 0 0.75rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  font-family: var(--font-ui);
  font-weight: 700;
}
.see-also ul { margin: 0; padding-left: 0; list-style: none; }
.see-also li { margin: 0.4rem 0; }
.see-also li::before { content: "→"; color: var(--accent); margin-right: 0.5rem; font-weight: 600; }
.see-also a { color: var(--text-soft); border-bottom: 1px solid transparent; }
.see-also a:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 1.5rem auto 0;
  max-width: var(--max-wide);
  padding: 0 1.5rem;
}
.breadcrumb a { color: var(--text-muted); border-bottom: 1px solid transparent; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { margin: 0 0.4rem; opacity: 0.5; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 3rem 1.5rem 3rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  background: var(--bg-alt);
  margin-top: 4rem;
}
.site-footer-inner {
  max-width: var(--max-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2.5rem;
}
.site-footer h4 {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text);
  margin: 0 0 0.75rem;
  font-weight: 700;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 0.35rem 0; }
.site-footer a { color: var(--text-muted); }
.site-footer a:hover { color: var(--accent); }
.site-footer .credits {
  grid-column: 1 / -1;
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  margin-top: 0.5rem;
  font-size: 0.82rem;
  text-align: center;
}
@media (max-width: 720px) {
  .site-footer-inner { grid-template-columns: 1fr; gap: 1.5rem; }
}

/* ---------- Concept index theme blocks ---------- */
.concept-theme { margin: 3rem 0 1.5rem; }
.concept-theme-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  margin: 0 0 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  letter-spacing: -0.005em;
}
.concept-theme-title .count {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-left: 0.5rem;
}

/* ---------- Hero chips ---------- */
.chip-row { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }
.chip {
  display: inline-block;
  padding: 0.3rem 0.65rem;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-soft);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: all .15s;
}
.chip:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Tree divider ---------- */
.tree-divider {
  display: block;
  text-align: center;
  margin: 3rem 0;
  color: var(--accent);
  opacity: 0.5;
  font-size: 1.5rem;
  letter-spacing: 2rem;
}
.tree-divider::before { content: "✦ ✦ ✦"; }

/* ---------- Wiki figures ---------- */
figure.wiki-figure, figure.diagram {
  margin: 2rem auto;
  padding: 0.75rem;
  background: var(--bg-alt);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  text-align: center;
  max-width: 100%;
}
figure.diagram {
  background: transparent;
  border: none;
  padding: 1rem 0;
}
figure.wiki-figure img, figure.diagram img {
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  border-radius: var(--radius-sm);
}
figure.wiki-figure img { background: #fff; }
:root[data-theme="dark"] figure.wiki-figure img { background: #f5efe0; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) figure.wiki-figure img { background: #f5efe0; }
}
figure figcaption {
  margin-top: 0.75rem;
  padding: 0 0.5rem;
  font-family: var(--font-serif);
  font-size: 0.92rem;
  font-style: italic;
  color: var(--text-muted);
  line-height: 1.5;
  text-align: left;
}

/* ---------- Reading paths ---------- */
.path-stops {
  list-style: none;
  padding: 0;
  margin: 2rem 0;
}
.path-stops li {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}
.path-stops li:last-child { border-bottom: none; }
.path-step-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--accent);
  font-feature-settings: "tnum";
  text-align: right;
  line-height: 1;
}
.path-step-body h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.005em;
}
.path-step-body h3 a { color: var(--text); border-bottom: 1px solid transparent; }
.path-step-body h3 a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.path-step-body p { margin: 0; color: var(--text-muted); }

/* ---------- Part page chapter list ---------- */
.part-chapters {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
}
.part-chapters li {
  border-bottom: 1px solid var(--border);
}
.part-chapters li a {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 1rem;
  padding: 1.25rem 0;
  color: inherit;
  border-bottom: none;
  transition: padding-left .15s;
}
.part-chapters li a:hover { padding-left: 0.5rem; }
.part-chapters .ch-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--accent);
  font-weight: 600;
  text-align: right;
  line-height: 1;
}
.part-chapters .ch-content { display: block; }
.part-chapters .ch-content strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  color: var(--text);
}
.part-chapters .ch-blurb {
  display: block;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* ---------- Reading progress bar ---------- */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 100;
  background: transparent;
  pointer-events: none;
}
.reading-progress-bar {
  height: 100%;
  width: 0;
  background: var(--accent);
  transition: width .1s linear;
}

/* ---------- Missing-content bar (chapter pages) ---------- */
.missing-bar {
  margin: 2rem 0;
  background: var(--bg-alt);
  border-radius: 999px;
  height: 8px;
  position: relative;
  overflow: hidden;
}
.missing-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-soft), var(--accent));
  border-radius: 999px;
}
.missing-label {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  text-align: center;
}

/* ---------- In-page TOC (sidebar) ---------- */
.in-page-toc {
  position: fixed;
  top: 100px;
  right: max(1rem, calc(50vw - 600px));
  width: 200px;
  max-height: calc(100vh - 140px);
  overflow-y: auto;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  display: none;
}
@media (min-width: 1280px) {
  .in-page-toc { display: block; }
}
.in-page-toc h4 {
  margin: 0 0 0.75rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  font-weight: 700;
}
.in-page-toc ol { list-style: none; padding: 0; margin: 0; }
.in-page-toc li { margin: 0.35rem 0; }
.in-page-toc a {
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: none;
  padding-left: 0.6rem;
  border-left: 2px solid transparent;
  display: block;
  line-height: 1.4;
  transition: color .15s, border-color .15s;
}
.in-page-toc a:hover { color: var(--accent); }
.in-page-toc a.active {
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

/* ---------- A-Z index ---------- */
.alpha-index {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 1.5rem 0 2.5rem;
  padding: 1rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 65px;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(6px);
  z-index: 10;
}
.alpha-index a {
  font-family: var(--font-ui);
  display: inline-block;
  width: 32px; height: 32px;
  line-height: 32px;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
}
.alpha-index a:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.alpha-list { list-style: none; padding: 0; }
.alpha-list li {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border-soft);
  align-items: baseline;
}
.alpha-list li a {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--text);
  font-weight: 500;
  border-bottom: none;
}
.alpha-list li a:hover { color: var(--accent); }
.alpha-list .alpha-kind {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
}
.alpha-list .alpha-desc {
  display: block;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  grid-column: 1 / -1;
}

/* ---------- Search overlay ---------- */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 200;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 8vh;
  backdrop-filter: blur(4px);
}
.search-overlay[hidden] { display: none; }
.search-modal {
  width: 100%;
  max-width: 600px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  max-height: 80vh;
}
.search-input-row {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
}
.search-input-row input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 1rem 1.25rem;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text);
  outline: none;
}
.search-input-row button {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0 1.25rem;
  line-height: 1;
}
.search-input-row button:hover { color: var(--accent); }
.search-results {
  list-style: none;
  margin: 0;
  padding: 0.5rem 0;
  overflow-y: auto;
  flex: 1;
}
.search-results li {}
.search-results a {
  display: block;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border-soft);
  color: inherit;
  border-left: 3px solid transparent;
}
.search-results a:hover, .search-results a:focus {
  background: var(--bg-alt);
  border-left-color: var(--accent);
  outline: none;
}
.search-results .r-kind {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  font-weight: 700;
  margin-right: 0.6rem;
}
.search-results .r-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--text);
  font-weight: 600;
}
.search-results .r-snippet {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}
.search-results mark {
  background: color-mix(in srgb, var(--accent) 30%, transparent);
  color: inherit;
  padding: 0 0.1rem;
  border-radius: 2px;
}
.search-empty {
  padding: 1rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-style: italic;
}
.search-hint {
  margin: 0;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-soft);
  text-align: right;
}

/* ---------- Glossary tooltip ---------- */
.glossary-tooltip {
  position: absolute;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  max-width: 340px;
  font-family: var(--font-serif);
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--text);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  pointer-events: none;
  border-left: 3px solid var(--accent);
}
.glossary-tooltip strong {
  font-family: var(--font-ui);
  font-weight: 700;
  color: var(--accent);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 0.4rem;
}

/* ---------- Citation / Share widget ---------- */
.share-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin: 1.5rem 0;
  padding: 1rem 0;
  border-top: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: 0.85rem;
}
.share-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
  margin-right: 0.5rem;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  text-decoration: none;
  background: transparent;
  cursor: pointer;
  border-bottom: 1px solid var(--border) !important;
}
.share-btn:hover { color: var(--accent); border-color: var(--accent); }
.share-btn svg { width: 16px; height: 16px; }
.cite-toggle {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  color: var(--text-muted);
  cursor: pointer;
  margin-left: auto;
  border-bottom: 1px solid var(--border) !important;
}
.cite-toggle:hover { color: var(--accent); border-color: var(--accent); }
.cite-box {
  background: var(--bg-alt);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  margin-top: 0.75rem;
  display: none;
}
.cite-box.open { display: block; }
.cite-box dt {
  font-weight: 600;
  color: var(--accent);
  margin-top: 0.5rem;
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}
.cite-box dt:first-child { margin-top: 0; }
.cite-box dd {
  margin: 0.25rem 0 0.6rem;
  font-family: var(--font-serif);
  font-size: 0.92rem;
  color: var(--text-soft);
  line-height: 1.5;
  user-select: all;
}

/* ============================================================
   Diagram styling — SVGs are INLINED so they inherit page CSS
   variables and switch with the theme toggle.
   ============================================================ */
.diagram-svg {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
}
figure.diagram {
  margin: 2.5rem -4rem;
  padding: 0;
  background: linear-gradient(180deg, var(--bg-alt), transparent);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  overflow: hidden;
  position: relative;
  max-width: calc(100vw - 2rem);
}
@media (max-width: 860px) {
  figure.diagram { margin-left: -1rem; margin-right: -1rem; }
}
@media (max-width: 600px) {
  figure.diagram { margin-left: -0.5rem; margin-right: -0.5rem; border-radius: var(--radius-md); padding: 0.75rem; }
}
figure.diagram::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.6;
}

/* Element classes */
.diag-bg          { fill: transparent; }
.diag-stroke      { stroke: var(--accent); }
.diag-fill        { fill:   var(--accent); }
.diag-soft        { fill:   var(--accent-soft); opacity: 0.85; }
.diag-soft-fill   { fill:   var(--accent-soft); }
.diag-accent-fill { fill:   var(--accent); }
.diag-arrow       { stroke: var(--accent); fill: none; stroke-width: 1.5; }
.diag-arrowhead   { fill:   var(--accent); }
.diag-grid        { stroke: var(--border); stroke-dasharray: 2 3; stroke-width: 1; opacity: 0.7; }
.diag-ghost       { fill:   var(--bg-deep); opacity: 0.85; }

/* Text classes (theme-aware) */
.diagram-svg text {
  dominant-baseline: middle;
  text-anchor: middle;
}
.diag-text {
  fill: var(--text);
  font-family: var(--font-display);
  font-size: 16px;
}
.diag-label {
  fill: var(--text);
  font-family: var(--font-ui);
  font-size: 13px;
}
.diag-label-sm {
  fill: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 11px;
}
.diag-headline {
  fill: var(--text);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
}
.diag-kicker {
  fill: var(--accent);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
}
.diag-eyebrow {
  fill: var(--accent);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
}
.diag-conclusion {
  fill: var(--accent);
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  font-style: italic;
}
.diag-box-title {
  fill: var(--text);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
}
.diag-badge-num {
  fill: var(--bg);
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
}
:root[data-theme="dark"] .diag-badge-num { fill: #0a0a0a; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .diag-badge-num { fill: #0a0a0a; }
}

/* Text rendered ON TOP of gold gradient — needs dark fill for light mode and dark mode both */
.diag-text-on-gold {
  fill: #1a1714;
  font-family: var(--font-display);
}
:root[data-theme="dark"] .diag-text-on-gold { fill: #0a0a0a; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .diag-text-on-gold { fill: #0a0a0a; }
}

/* Stronger ghost in dark mode for contrast */
:root[data-theme="dark"] .diag-ghost {
  fill: #2a2316;
  opacity: 0.85;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .diag-ghost {
    fill: #2a2316;
    opacity: 0.85;
  }
}

/* ---------- Newsletter block ---------- */
.newsletter-block {
  background: var(--bg-alt);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 2rem 2rem;
  margin: 3rem 0 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
  overflow: hidden;
}
.newsletter-block::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}
.newsletter-text h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 0.4rem;
  color: var(--text);
}
.newsletter-text p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
}
.newsletter-form {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.newsletter-form input[type="email"] {
  flex: 1;
  min-width: 220px;
  padding: 0.7rem 1rem;
  font-family: var(--font-serif);
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.newsletter-form input[type="email"]:focus {
  border-color: var(--accent);
  box-shadow: var(--focus-ring);
}
.newsletter-form button {
  flex-shrink: 0;
}
@media (min-width: 720px) {
  .newsletter-block {
    flex-direction: row;
    align-items: center;
    gap: 2rem;
  }
  .newsletter-text { flex: 1; }
  .newsletter-form { flex: 1; max-width: 420px; }
}

/* ---------- Pull quote gallery ---------- */
.quote-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin: 2.5rem 0;
}
.quote-card {
  margin: 0;
  padding: 1.75rem 1.5rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform .15s, border-color .15s, box-shadow .15s;
}
.quote-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--accent-soft);
}
.quote-card blockquote {
  margin: 0;
  padding: 0;
  border: none;
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1.4;
  font-style: italic;
  color: var(--text);
}
.quote-card blockquote::before { content: "\201C"; color: var(--accent); font-size: 1.5em; line-height: 0; margin-right: 0.2rem; vertical-align: -0.2em; }
.quote-card figcaption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-soft);
  padding-top: 0.75rem;
}
.quote-card figcaption a {
  color: var(--text-muted);
  border-bottom: none;
}
.quote-card figcaption a:hover { color: var(--accent); }
.quote-share {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.quote-share:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Concept prev/next footer nav ---------- */
.concept-navfoot {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 2.5rem 0 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.concept-navfoot a {
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: inherit;
  border-bottom: 1px solid var(--border) !important;
  transition: border-color .15s, background-color .15s;
}
.concept-navfoot a:hover { border-color: var(--accent-soft); background: var(--bg-alt); }
.concept-navfoot .nav-dir {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
}
.concept-navfoot .nav-title {
  display: block;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 0.3rem;
  color: var(--text);
}
.concept-navfoot .nav-right { text-align: right; }
.concept-navfoot .nav-placeholder { visibility: hidden; }

/* ---------- FAQ ---------- */
.faq-related {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--bg-alt);
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-soft);
}

/* ---------- Print styles ---------- */
@media print {
  .site-header, .site-footer, .chapter-nav, .book-promo,
  .reading-progress, .in-page-toc, .search-overlay,
  .theme-toggle, .icon-btn, .breadcrumb, .chip-row, .hero-ctas { display: none !important; }
  body { font-size: 11pt; color: #000; background: #fff; }
  article.prose { padding: 0; }
  article.prose h1 { color: #000; page-break-after: avoid; }
  article.prose h2 { page-break-after: avoid; }
  article.prose a { color: #000; border-bottom: none; }
  article.prose a::after { content: " (" attr(href) ")"; font-size: 0.85em; color: #666; }
  blockquote.pullquote { font-style: italic; border-left: 2px solid #000; padding-left: 1rem; }
}