/* /book/ surface — primary navigation, the book itself.
   Index page = 10 section cards. Section detail page = opener
   prose + episodes grid + journey filter + map CTA.
   Shares fonts + palette with /journeys/. */

@font-face {
  font-family: 'Newsreader';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/Newsreader-Regular.woff2') format('woff2');
}
@font-face {
  font-family: 'Newsreader';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/Newsreader-Italic.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/JetBrainsMono-Regular.woff2') format('woff2');
}

:root {
  --paper: #fafaf8;
  --paper-warm: #f4f1ea;
  --ink: #1a1a1a;
  --rule: #d8d3c8;
  --pencil: #b8b0a0;
  --accent: #6b5d4f;
  --quiet: #4a4a4a;
  --amber: #a87a3c;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
}

body {
  font-family: 'Newsreader', Georgia, 'Times New Roman', serif;
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Shared header dimensions across /book/, /journeys/, /tracks/ so
   the top-right nav doesn't jump position between surfaces. */
body > header {
  height: 60px;
  padding: 0 1.5rem;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--paper);
}
.wordmark {
  font-weight: 400;
  font-size: 1.25rem;
  letter-spacing: 0.01em;
  margin: 0;
}
.wordmark a { color: inherit; text-decoration: none; }
.wordmark a:hover { color: var(--accent); }
.nav-links {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.8rem;
}
.nav-links a {
  color: var(--quiet);
  text-decoration: none;
  margin-left: 1rem;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active {
  color: var(--ink);
  font-weight: 600;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 3px;
}

/* -------------------- /book/ index page -------------------- */

.book-index {
  max-width: 920px;
  margin: 0 auto;
  padding: 2.4rem 1.5rem 4rem;
}
.book-index-header {
  margin-bottom: 2.2rem;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1.4rem;
}
.book-title {
  font-size: 2.4rem;
  font-weight: 400;
  letter-spacing: 0.005em;
  margin: 0 0 0.4rem;
}
.book-subtitle {
  font-style: italic;
  color: var(--quiet);
  font-size: 1.15rem;
  margin: 0 0 1rem;
}
.book-blurb {
  margin: 0;
  font-size: 1rem;
  color: var(--quiet);
  max-width: 56ch;
}

.section-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.section-card {
  display: grid;
  grid-template-columns: 4rem 1fr auto;
  gap: 1rem;
  align-items: baseline;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
  color: inherit;
  transition: background 0.12s;
}
.section-card:hover { background: var(--paper-warm); }
.section-number {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.8rem;
  color: var(--pencil);
  letter-spacing: 0.12em;
}
.section-card-body { min-width: 0; }
.section-card-title {
  font-size: 1.45rem;
  font-weight: 400;
  letter-spacing: 0.005em;
  margin: 0 0 0.1rem;
}
.section-card-subtitle {
  font-size: 0.95rem;
  color: var(--quiet);
  margin: 0;
  font-style: italic;
}
.section-card-count {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.7rem;
  color: var(--quiet);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

/* -------------------- /book/<section>/ detail page -------------------- */

.section-page {
  max-width: 920px;
  margin: 0 auto;
  padding: 2.4rem 1.5rem 1.4rem;
}
.section-back {
  display: inline-block;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.72rem;
  color: var(--quiet);
  text-decoration: none;
  margin-bottom: 0.9rem;
  letter-spacing: 0.04em;
}
.section-back:hover { color: var(--ink); }
.section-meta {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--quiet);
  margin: 0 0 0.35rem;
}
.section-title {
  font-size: 2.6rem;
  font-weight: 400;
  letter-spacing: 0.005em;
  margin: 0 0 0.3rem;
  line-height: 1.1;
}
.section-subtitle {
  font-style: italic;
  color: var(--quiet);
  font-size: 1.25rem;
  margin: 0 0 1.4rem;
}
.section-opener {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--ink);
  max-width: 38em;
  margin: 0 0 0;
}

/* Filter overlay: small mono row of journey buttons that scope the
   episode list to one geographic chapter. "All" returns to the
   unscoped section view. */
.section-filter {
  max-width: 920px;
  margin: 1.6rem auto 0;
  padding: 1.2rem 1.5rem;
  border-top: 1px solid var(--rule);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.section-filter-label {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--quiet);
  margin-right: 0.5rem;
}
.filter-pill {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.7rem;
  color: var(--quiet);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 1px;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.filter-pill:hover { color: var(--ink); border-color: var(--accent); }
.filter-pill.active {
  color: var(--paper);
  background: var(--ink);
  border-color: var(--ink);
}

/* Episodes list. Each episode is the unit: photograph + passage. */
.episodes-list {
  max-width: 920px;
  margin: 0 auto;
  padding: 1.4rem 1.5rem 4rem;
}
.episode {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 1.6rem;
  align-items: start;
  padding: 1.8rem 0;
  border-top: 1px solid var(--rule);
}
.episode:first-child { border-top: none; padding-top: 0.6rem; }
.episode-image {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  border-radius: 2px;
}
.episode-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--paper-warm);
  border: 1px dashed var(--rule);
  border-radius: 2px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.66rem;
  color: var(--pencil);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  padding: 0.5rem;
}
.episode-body { min-width: 0; }
.episode-meta {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--quiet);
  margin: 0 0 0.3rem;
}
.episode-meta .episode-meta-sep {
  margin: 0 0.5rem;
  color: var(--pencil);
}
.episode-meta a {
  color: var(--quiet);
  text-decoration: none;
  border-bottom: 1px dotted var(--pencil);
}
.episode-meta a:hover { color: var(--ink); border-color: var(--accent); }
.episode-title {
  font-size: 1.4rem;
  font-weight: 400;
  letter-spacing: 0.005em;
  margin: 0 0 0.55rem;
}
.episode-passage {
  margin: 0 0 0.7rem;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink);
}
.episode-aphorism {
  margin: 0 0 0.7rem;
  font-size: 0.9rem;
  font-style: italic;
  color: var(--quiet);
  border-left: 2px solid var(--rule);
  padding-left: 0.7rem;
}

/* Click-to-play YouTube overlay. The poster image renders normally;
   the .episode-play button sits absolutely on top. Click swaps the
   .episode-media contents for an iframe (in book.js attachPlayHandlers).
   Lazy load: no iframe JS until the user asks for it. */
.episode-media {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
}
.episode-media .episode-image,
.episode-media .episode-placeholder {
  border: none;
  border-radius: 0;
  width: 100%;
  height: 100%;
  margin: 0;
}
.episode-play {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background: rgba(26, 26, 26, 0.32);
  border: none;
  cursor: pointer;
  color: var(--paper);
  transition: background 0.15s;
}
.episode-play:hover { background: rgba(26, 26, 26, 0.48); }
.episode-play-icon {
  width: 2.6rem;
  height: 2.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(250, 250, 248, 0.85);
  color: var(--ink);
  border-radius: 50%;
  font-size: 1.1rem;
  padding-left: 0.18rem;
}
.episode-play-label {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(26, 26, 26, 0.65);
  padding: 0.2rem 0.5rem;
  border-radius: 1px;
}
.episode-iframe-wrap {
  width: 100%;
  height: 100%;
}
.episode-iframe {
  width: 100%;
  height: 100%;
  display: block;
  border: 0;
}

/* Instagram strip per episode. Static thumbnails (no live feed), each
   linking to a curated permalink. Squares show 'IG' label to indicate
   the destination; user replaces with real thumbnail images later. */
.episode-ig-strip {
  display: flex;
  gap: 0.35rem;
  margin-top: 0.2rem;
}
.ig-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  background: var(--ink);
  color: var(--paper-warm);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-radius: 1px;
  transition: opacity 0.12s, transform 0.12s;
}
.ig-thumb:hover { opacity: 0.85; transform: translateY(-1px); }

/* Section-level outlinks: 'Watch the <section> playlist' + 'See
   #raconteur-<section> on Instagram'. Sits between the episodes
   list and the map CTA. Two mono links, generous spacing. */
.section-outlinks {
  max-width: 920px;
  margin: 0 auto;
  padding: 1.6rem 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.outlink {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.78rem;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.5rem;
  transition: color 0.12s, border-color 0.12s;
}
.outlink:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.outlink:last-child { border-bottom: none; padding-bottom: 0; }

/* Map CTA at the bottom of every section page. Routes to /tracks/
   filtered to show only this section's pebbles. */
.section-cta {
  max-width: 920px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
/* The whole panel is the link -- no inner button. Matches the
   homepage explore-link pattern: bigger click target, cleaner look,
   chevron on the right via ::after. */
.section-cta-panel {
  position: relative;
  display: block;
  padding: 1rem 2.6rem 1rem 1.3rem;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 2px;
  text-decoration: none;
  box-shadow: 0 2px 6px rgba(26, 26, 26, 0.12);
  transition: background 0.15s, border-color 0.15s, transform 0.12s, box-shadow 0.15s;
}
.section-cta-panel::after {
  content: '›';
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  line-height: 1;
  color: var(--paper-warm);
  transition: transform 0.15s;
}
.section-cta-panel:hover,
.section-cta-panel:focus-visible {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 4px 10px rgba(26, 26, 26, 0.18);
  transform: translateY(-1px);
}
.section-cta-panel:hover::after,
.section-cta-panel:focus-visible::after {
  transform: translateY(-50%) translateX(3px);
}
.section-cta-panel:active { transform: translateY(0); }
.section-cta-label {
  display: block;
  font-size: 1.1rem;
  font-style: italic;
  margin-bottom: 0.15rem;
  color: var(--paper);
}
.section-cta-sub {
  display: block;
  font-size: 0.85rem;
  color: rgba(250, 250, 248, 0.72);
  line-height: 1.4;
}

/* Empty-state when a filter produces no episodes. */
.empty-state {
  padding: 2.2rem 0;
  text-align: center;
  font-style: italic;
  color: var(--quiet);
}

@media (max-width: 700px) {
  body > header { height: 52px; padding: 0 0.75rem; }
  .book-index { padding: 1.6rem 1rem 3rem; }
  .book-title { font-size: 1.8rem; }
  .section-card {
    grid-template-columns: 2.5rem 1fr;
    gap: 0.7rem;
  }
  .section-card-count { grid-column: 2; margin-top: 0.2rem; }
  .section-page { padding: 1.6rem 1rem 1rem; }
  .section-title { font-size: 1.9rem; }
  .section-subtitle { font-size: 1.05rem; }
  .section-filter { padding: 1rem 1rem; }
  .episodes-list { padding: 1.2rem 1rem 3rem; }
  .episode { grid-template-columns: 1fr; gap: 0.9rem; }
  .episode-image, .episode-placeholder { aspect-ratio: 16 / 10; }
  .section-cta { padding: 0 1rem; gap: 0.55rem; }
  .section-cta-panel { flex-direction: column; align-items: flex-start; gap: 0.7rem; }
}

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