/* ── Reset & Variables ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #f8f6f0;
  --surface:    #ffffff;
  --border:     #e0d9cc;
  --text:       #1a1612;
  --text-muted: #6b5f4e;
  --accent:     #7b4f2e;
  --accent-dim: #a0714e;
  --accent-bg:  #fdf3e7;
  --ot-color:   #5c6e3d;
  --nt-color:   #2e5c82;
  --tag-ot-bg:  #eef3e6;
  --tag-nt-bg:  #e6eef3;
  --shadow:     0 1px 4px rgba(0,0,0,.08);
  --radius:     8px;
  --font-body:  'Georgia', 'Times New Roman', serif;
  --font-ui:    system-ui, -apple-system, sans-serif;
  --transition: 180ms ease;
}

[data-theme="dark"] {
  --bg:         #141210;
  --surface:    #1f1c18;
  --border:     #2e2a24;
  --text:       #ede8df;
  --text-muted: #9e9080;
  --accent:     #c4834d;
  --accent-dim: #a06835;
  --accent-bg:  #2a1f14;
  --ot-color:   #8aad60;
  --nt-color:   #6aaad4;
  --tag-ot-bg:  #1e2a14;
  --tag-nt-bg:  #142232;
  --shadow:     0 1px 6px rgba(0,0,0,.4);
}

/* ── Base ─────────────────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background var(--transition), color var(--transition);
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ── Header ───────────────────────────────────────────── */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.site-brand {
  font-family: var(--font-ui);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .01em;
  text-decoration: none;
}
.site-brand:hover { text-decoration: none; opacity: .85; }

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  font-size: 1rem;
  cursor: pointer;
  transition: background var(--transition);
}
.theme-toggle:hover { background: var(--border); }

/* ── Breadcrumb ───────────────────────────────────────── */
.breadcrumb-bar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: .82rem;
  color: var(--text-muted);
  padding: .4rem 0;
  min-height: 0;
}

.breadcrumb-bar .container {
  display: flex;
  align-items: center;
  gap: .4rem;
  flex-wrap: wrap;
}

.breadcrumb-bar a { color: var(--accent-dim); }
.breadcrumb-bar span.sep { color: var(--border); }
.breadcrumb-bar span.current { color: var(--text-muted); }

/* ── Main ─────────────────────────────────────────────── */
main {
  flex: 1;
  padding: 2rem 1.25rem 3rem;
}

/* ── Home: Overview ───────────────────────────────────── */
.overview-section {
  max-width: 820px;
  margin-bottom: 2.5rem;
}

.overview-section h1 {
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: .75rem;
  font-weight: normal;
}

.overview-section p {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: .6rem;
}

.testament-stats {
  display: flex;
  gap: 1.5rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.stat-chip {
  font-family: var(--font-ui);
  font-size: .8rem;
  padding: .3rem .75rem;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: .02em;
}
.stat-chip.ot { background: var(--tag-ot-bg); color: var(--ot-color); }
.stat-chip.nt { background: var(--tag-nt-bg); color: var(--nt-color); }

/* ── Testament Section ────────────────────────────────── */
.testament-group { margin-bottom: 3rem; }

.testament-heading {
  font-family: var(--font-ui);
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: .5rem;
  margin-bottom: 1.2rem;
}

.testament-heading span {
  padding: 0 .5rem .5rem 0;
}

/* ── Category Group ───────────────────────────────────── */
.category-group { margin-bottom: 1.8rem; }

.category-label {
  font-family: var(--font-ui);
  font-size: .72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: .7rem;
}

/* ── Book Grid ────────────────────────────────────────── */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: .75rem;
}

.book-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  cursor: pointer;
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
  text-decoration: none;
  display: block;
}
.book-card:hover {
  box-shadow: var(--shadow), 0 4px 16px rgba(0,0,0,.1);
  border-color: var(--accent-dim);
  transform: translateY(-1px);
  text-decoration: none;
}

.book-card-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: .25rem;
}

.book-card-meta {
  font-family: var(--font-ui);
  font-size: .75rem;
  color: var(--text-muted);
}

.book-card-tag {
  display: inline-block;
  font-family: var(--font-ui);
  font-size: .65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: .15rem .45rem;
  border-radius: 4px;
  margin-top: .4rem;
}
.book-card-tag.ot { background: var(--tag-ot-bg); color: var(--ot-color); }
.book-card-tag.nt { background: var(--tag-nt-bg); color: var(--nt-color); }

/* ── Book Page ────────────────────────────────────────── */
.book-header {
  max-width: 820px;
  margin-bottom: 2rem;
}

.book-header h1 {
  font-size: 2rem;
  color: var(--accent);
  font-weight: normal;
  margin-bottom: .3rem;
}

.book-meta {
  font-family: var(--font-ui);
  font-size: .82rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  display: flex;
  gap: .6rem;
  flex-wrap: wrap;
  align-items: center;
}

.book-summary {
  max-width: 820px;
  margin-bottom: 1.5rem;
  font-size: 1rem;
  line-height: 1.8;
}

.themes-row {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.theme-tag {
  font-family: var(--font-ui);
  font-size: .72rem;
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: .2rem .6rem;
}

.chapters-heading {
  font-family: var(--font-ui);
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: .5rem;
  margin-bottom: 1rem;
}

.chapter-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: .65rem;
}

.chapter-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .85rem 1rem;
  cursor: pointer;
  display: block;
  text-decoration: none;
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}
.chapter-card:hover {
  box-shadow: var(--shadow), 0 4px 12px rgba(0,0,0,.08);
  border-color: var(--accent-dim);
  transform: translateY(-1px);
  text-decoration: none;
}

.chapter-card-num {
  font-family: var(--font-ui);
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--accent-dim);
  margin-bottom: .2rem;
}

.chapter-card-summary {
  font-size: .88rem;
  color: var(--text);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── Chapter Page ─────────────────────────────────────── */
.chapter-header {
  max-width: 820px;
  margin-bottom: 2rem;
}

.chapter-header h1 {
  font-size: 1.8rem;
  color: var(--accent);
  font-weight: normal;
  margin-bottom: .5rem;
}

.chapter-summary-block {
  max-width: 820px;
  font-size: 1rem;
  line-height: 1.85;
  margin-bottom: 2rem;
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
}

.key-verses-heading {
  font-family: var(--font-ui);
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: .5rem;
  margin-bottom: 1.25rem;
  max-width: 820px;
}

.verse-list {
  max-width: 820px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.verse-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
}

.verse-ref {
  font-family: var(--font-ui);
  font-size: .78rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: .4rem;
  letter-spacing: .03em;
}

.verse-text {
  font-size: 1.05rem;
  font-style: italic;
  line-height: 1.7;
  color: var(--text);
}

/* ── Chapter navigation ───────────────────────────────── */
.chapter-nav {
  display: flex;
  gap: 1rem;
  margin-top: 2.5rem;
  max-width: 820px;
  flex-wrap: wrap;
}

.nav-btn {
  font-family: var(--font-ui);
  font-size: .85rem;
  padding: .55rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--accent);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), border-color var(--transition);
  display: inline-block;
}
.nav-btn:hover {
  background: var(--accent-bg);
  border-color: var(--accent-dim);
  text-decoration: none;
}
.nav-btn:disabled, .nav-btn.disabled {
  opacity: .35;
  cursor: default;
  pointer-events: none;
}
.nav-btn.back {
  margin-right: auto;
}

/* ── Search ───────────────────────────────────────────── */
.search-bar {
  max-width: 460px;
  margin-bottom: 1.75rem;
  display: flex;
  gap: .5rem;
}

.search-input {
  flex: 1;
  font-family: var(--font-ui);
  font-size: .9rem;
  padding: .55rem .9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  transition: border-color var(--transition);
}
.search-input:focus {
  outline: none;
  border-color: var(--accent-dim);
}
.search-input::placeholder { color: var(--text-muted); }

/* ── Misc ─────────────────────────────────────────────── */
.loading {
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: .9rem;
  padding: 3rem 0;
  text-align: center;
}

footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  font-family: var(--font-ui);
  font-size: .78rem;
  color: var(--text-muted);
  text-align: center;
}

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 600px) {
  .overview-section h1 { font-size: 1.5rem; }
  .book-grid { grid-template-columns: 1fr 1fr; }
  .chapter-list { grid-template-columns: 1fr; }
  main { padding: 1.25rem .75rem 2.5rem; }
}