:root {
  --bg: #f8f5f1;
  --fg: #222222;
  --accent: #4a6fa5;
  --accent-soft: #d7e3f6;
  --border-soft: #e0d7c8;

  /* book-nav.css overrides */
  --nav-bg:           var(--accent-soft);
  --nav-border:       var(--border-soft);
  --nav-fg:           var(--accent);
  --nav-label:        var(--fg);
  --nav-arrow:        var(--accent);
  --nav-hover:        #2d4f80;
  --nav-outer-offset: 400px;
  --nav-max-width:    760px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.7;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header,
.site-footer {
  max-width: 760px;
  margin: 0 auto;
  padding: 1.5rem 1rem 0.5rem;
}
.site-header h1 {
  font-size: 1.6rem;
  margin: 0;
  letter-spacing: 0.03em;
}
.site-header .subtitle {
  font-size: 0.95rem;
  color: #666;
  margin-top: 0.25rem;
}
.main-wrapper {
  max-width: 760px;
  margin: 0 auto;
  padding: 1rem 1rem 3rem;
  background: rgba(255,255,255,0.95);
  border-radius: 12px 12px 0 0;
  border: 1px solid var(--border-soft);
  border-top: none;
}
main { margin-top: 0.5rem; }

h1, h2, h3, h4 { font-weight: 600; line-height: 1.3; }

.chapter-title {
  font-size: 1.8rem;
  margin-top: 0.5rem;
  margin-bottom: 1rem;
}
p {
  font-size: 1.02rem;
  margin: 0 0 1rem;
}

ol.toc {
  margin: 1rem 0 2rem;
  padding-left: 1.4rem;
}
ol.toc li { margin: 0.35rem 0; }
.chapter-meta {
  font-size: 0.85rem;
  color: #777;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-soft);
  padding-bottom: 0.5rem;
}
.chapter-image {
  margin: 1.5rem 0 2rem;
  text-align: center;
}
.chapter-image img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 18px rgba(0,0,0,0.08);
}

/* .chapter-nav removed — replaced by book-nav.css */

.footnotes {
  font-size: 0.85rem;
  color: #555;
  margin-top: 2rem;
}
.footnotes ol {
  padding-left: 1.4rem;
}
.footnotes li {
  margin: 0.3rem 0;
}

.site-footer {
  font-size: 0.8rem;
  color: #777;
  padding-bottom: 2rem;
}
.site-footer a {
  color: inherit;
  text-decoration: underline;
}

.previous-volumes {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 1rem;
}
.volume-card {
  border-top: 1px solid var(--border-soft);
  padding-top: 1rem;
}
.volume-layout {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-start;
}
.volume-cover img {
  max-width: 140px;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 6px 14px rgba(0,0,0,0.08);
}
.volume-copy p {
  margin-top: 0;
}
@media (max-width: 600px) {
  .volume-layout {
    flex-direction: column;
  }
}
/* Art of Gig overall layout tweaks */

.aog-intro {
  margin-bottom: 1.5rem;
}

/* TOC spacing (used in toc.html) */
.toc {
  padding-left: 1.25rem;
  margin-top: 0.25rem;
  margin-bottom: 0.25rem;
}

/* ── 3-box book card grid (index.html) ───────────────────────── */

.book-box-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 1rem;
}

.book-box {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 1.25rem;
  background: rgba(255,255,255,0.7);
}

.book-box-cover {
  width: 100%;
  max-width: 180px;
  height: auto;
  border-radius: 6px;
  box-shadow: 0 6px 16px rgba(0,0,0,0.10);
  margin: 0 auto 1rem;
  display: block;
}

.book-box h2 {
  font-size: 1rem;
  margin: 0 0 0.5rem;
}

.book-box p {
  font-size: 0.9rem;
  color: #444;
  flex: 1;
  margin: 0 0 1rem;
}

.book-box-editions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-size: 0.8rem;
  margin-top: auto;
}

.book-box-editions a {
  background: var(--accent-soft);
  color: var(--accent);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  white-space: nowrap;
  font-weight: 600;
}

.book-box-editions a:hover {
  background: var(--accent);
  color: white;
  text-decoration: none;
}

.edition-soon {
  color: #999;
  padding: 0.25rem 0;
  font-style: italic;
}

/* titlepage (vol3_title.html) */
.titlepage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 60vh;
  padding: 2rem 1rem;
}
.titlepage h1 {
  font-size: 2.2rem;
  margin: 0 0 0.5rem;
}
.titlepage .subtitle {
  font-size: 1.05rem;
  color: #666;
  margin: 0 0 1.5rem;
}
.titlepage .byline {
  font-size: 1.1rem;
  color: var(--fg);
  margin: 0 0 1rem;
}
.titlepage .edition-note {
  font-size: 0.88rem;
  color: #777;
  line-height: 1.6;
  margin: 0 0 0.5rem;
}
.titlepage .copyright {
  font-size: 0.82rem;
  color: #999;
  margin: 0.5rem 0 0;
}

@media (max-width: 700px) {
  .book-box-grid {
    grid-template-columns: 1fr;
  }
}

/* ── Mobile: ≤600px ──────────────────────────────────────────────────── */
@media (max-width: 600px) {
  html, body {
    overflow-x: hidden;
  }

  .site-header,
  .site-footer {
    padding: 1rem 0.75rem 0.25rem;
  }

  .site-header h1 {
    font-size: 1.35rem;
  }

  .main-wrapper {
    padding: 0.75rem 0.75rem 2rem;
    border-radius: 8px 8px 0 0;
  }

  .chapter-title {
    font-size: 1.4rem;
  }

  p {
    font-size: 0.97rem;
  }

  .chapter-image img {
    border-radius: 4px;
  }
}