:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --text: #1e293b;
  --text-soft: #64748b;
  --border: #e2e8f0;
  --accent: #2563eb;
  --serif: 'Lora', Georgia, serif;
  --sans: 'Inter', system-ui, -apple-system, sans-serif;
  --verse-size: 19px;

  --c-chapter: #10b981;
  --c-verse: #f59e0b;
  --c-cultural: #ec4899;
  --c-cross: #6366f1;
  --c-then: #8b5cf6;
  --c-word: #0ea5e9;
  --c-person: #8b5cf6;
}
[data-theme="dark"] {
  --bg: #0b0f17;
  --surface: #131a24;
  --surface-2: #1c2531;
  --text: #e2e8f0;
  --text-soft: #94a3b8;
  --border: #2a3645;
  --accent: #60a5fa;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Topbar */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 820px; margin: 0 auto; padding: 12px 18px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 9px; color: var(--text); font-weight: 700; font-size: 20px; }
.brand:hover { text-decoration: none; }
.brand-mark { font-size: 22px; }
.brand-name { font-family: var(--serif); }
.topbar-actions { display: flex; gap: 8px; }
.icon-btn {
  background: var(--surface); border: 1px solid var(--border); color: var(--text);
  width: 40px; height: 38px; border-radius: 10px; cursor: pointer; font-size: 16px;
  display: inline-flex; align-items: center; justify-content: center;
}
.icon-btn:hover { background: var(--surface-2); }
.icon-btn .small-a { font-size: 11px; }
.font-panel {
  max-width: 820px; margin: 0 auto; padding: 8px 18px 12px;
  display: flex; align-items: center; gap: 12px;
}
.font-panel .small { font-size: 13px; } .font-panel .big { font-size: 22px; }
.font-panel input { flex: 1; accent-color: var(--accent); }

/* Layout */
.app { max-width: 820px; margin: 0 auto; padding: 22px 18px 60px; }

/* Home */
.hero { text-align: center; padding: 18px 0 26px; }
.hero h1 { font-family: var(--serif); font-size: 34px; margin: 0 0 8px; }
.hero p { color: var(--text-soft); margin: 0; font-size: 16px; }

.testament-tabs { display: flex; gap: 8px; background: var(--surface-2); padding: 5px; border-radius: 12px; margin: 20px 0; }
.testament-tabs button {
  flex: 1; padding: 9px; border: none; border-radius: 8px; cursor: pointer;
  font-family: var(--sans); font-size: 14px; font-weight: 600; color: var(--text-soft); background: transparent;
}
.testament-tabs button.active { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,.08); }

.book-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
@media (max-width: 560px) { .book-grid { grid-template-columns: repeat(2, 1fr); } }
.book-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 12px; text-align: center; cursor: pointer; color: var(--text);
  transition: transform .08s ease, border-color .15s ease;
}
.book-card:hover { transform: translateY(-2px); border-color: var(--accent); text-decoration: none; }
.book-card .bk-name { font-family: var(--serif); font-weight: 600; font-size: 16px; }
.book-card .bk-ch { color: var(--text-soft); font-size: 12px; margin-top: 3px; }

/* Chapter grid */
.crumbs { color: var(--text-soft); font-size: 14px; margin-bottom: 14px; }
.crumbs a { color: var(--text-soft); }
.page-title { font-family: var(--serif); font-size: 28px; margin: 4px 0 18px; }
.chapter-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(58px, 1fr)); gap: 9px; }
.chapter-cell {
  aspect-ratio: 1; display: flex; align-items: center; justify-content: center;
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  cursor: pointer; font-weight: 600; color: var(--text); font-size: 16px;
}
.chapter-cell:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

/* Reading view */
.reader-nav { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 8px; }
.reader-nav .chap-btn {
  background: var(--surface); border: 1px solid var(--border); color: var(--text);
  padding: 8px 14px; border-radius: 9px; cursor: pointer; font-weight: 600; font-size: 14px;
}
.reader-nav .chap-btn:hover:not(:disabled) { border-color: var(--accent); text-decoration:none; }
.reader-nav .chap-btn:disabled { opacity: .35; cursor: default; }
.reader-title { font-family: var(--serif); font-weight: 700; font-size: 18px; text-align: center; }

.toggle-bar { display: flex; flex-wrap: wrap; gap: 7px; margin: 14px 0 6px; }
.toggle-chip {
  border: 1px solid var(--border); background: var(--surface); color: var(--text-soft);
  padding: 6px 12px; border-radius: 999px; cursor: pointer; font-size: 13px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px;
}
.toggle-chip .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.toggle-chip[data-on="true"] { color: var(--text); border-color: currentColor; }
.toggle-chip.t-all[data-on="true"] { color: var(--accent); }
.toggle-chip.t-chapter[data-on="true"] { color: var(--c-chapter); }
.toggle-chip.t-verse[data-on="true"] { color: var(--c-verse); }
.toggle-chip.t-cultural[data-on="true"] { color: var(--c-cultural); }
.toggle-chip.t-cross[data-on="true"] { color: var(--c-cross); }
.toggle-chip.t-then[data-on="true"] { color: var(--c-then); }

/* Chapter context card */
.context-card {
  border: 1px solid color-mix(in srgb, var(--c-chapter) 35%, var(--border));
  background: color-mix(in srgb, var(--c-chapter) 8%, var(--surface));
  border-radius: 12px; padding: 14px 16px; margin: 12px 0 6px;
}
.context-card h3 { margin: 0 0 8px; font-size: 14px; color: var(--c-chapter); display:flex; align-items:center; gap:7px; }
.context-card p { margin: 0 0 10px; font-size: 15px; }
.context-themes { display: flex; flex-wrap: wrap; gap: 6px; }
.theme-pill { background: color-mix(in srgb, var(--c-chapter) 16%, transparent); color: var(--c-chapter);
  padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }

/* Verses */
.verses { font-family: var(--serif); font-size: var(--verse-size); line-height: 1.75; margin-top: 14px; }
.verse-num { font-weight: 700; font-size: .72em; vertical-align: super; color: var(--text-soft); margin-right: 2px; }
.verse-text { }
.verse-anno { color: var(--c-person); border-bottom: 1px dashed color-mix(in srgb, var(--c-person) 60%, transparent); cursor: pointer; }
.verse-dot { display:inline-block; width: 7px; height: 7px; border-radius:50%; margin: 0 5px; vertical-align: middle; cursor: pointer; }

/* Explainer cards under verses */
.exp-card { font-family: var(--sans); border-radius: 11px; padding: 12px 14px; margin: 9px 0 4px; font-size: 14.5px; line-height: 1.55; border: 1px solid var(--border); background: var(--surface); }
.exp-card .exp-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; margin-bottom: 5px; display:flex; align-items:center; gap:6px; }
.exp-verse { border-color: color-mix(in srgb, var(--c-verse) 35%, var(--border)); background: color-mix(in srgb, var(--c-verse) 7%, var(--surface)); }
.exp-verse .exp-label { color: var(--c-verse); }
.exp-cultural { border-color: color-mix(in srgb, var(--c-cultural) 35%, var(--border)); background: color-mix(in srgb, var(--c-cultural) 7%, var(--surface)); }
.exp-cultural .exp-label { color: var(--c-cultural); }
.exp-cross { border-color: color-mix(in srgb, var(--c-cross) 35%, var(--border)); background: color-mix(in srgb, var(--c-cross) 7%, var(--surface)); }
.exp-cross .exp-label { color: var(--c-cross); }
.exp-then { border-color: color-mix(in srgb, var(--c-then) 35%, var(--border)); background: color-mix(in srgb, var(--c-then) 7%, var(--surface)); }
.exp-then .exp-label { color: var(--c-then); }
.exp-then .tn-row { margin-top: 6px; }
.exp-then .tn-row b { color: var(--c-then); }
.exp-cross .xref { margin-top: 7px; }
.exp-cross .xref .ref { font-weight: 700; }

/* Word studies */
.wordstudies { margin: 22px 0 6px; }
.wordstudies h3 { font-size: 13px; text-transform: uppercase; letter-spacing:.5px; color: var(--c-word); margin-bottom: 8px; }
.ws-card { border:1px solid color-mix(in srgb, var(--c-word) 30%, var(--border)); background: color-mix(in srgb, var(--c-word) 7%, var(--surface)); border-radius: 11px; padding: 12px 14px; margin-bottom: 9px; }
.ws-card .ws-head { display:flex; align-items:baseline; gap:8px; flex-wrap:wrap; }
.ws-card .ws-greek { font-family: var(--serif); font-size: 18px; font-weight: 700; }
.ws-card .ws-translit { color: var(--text-soft); font-style: italic; font-size: 13px; }
.ws-card .ws-as { font-size: 13px; } .ws-card .ws-as b { color: var(--c-word); }
.ws-card p { margin: 7px 0 0; font-size: 14px; }

/* Modal (person/place) */
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.5); display:flex; align-items:center; justify-content:center; padding: 18px; z-index: 100; }
.modal { background: var(--surface); border-radius: 16px; max-width: 480px; width: 100%; max-height: 80vh; overflow-y: auto; padding: 20px 22px; }
.modal h2 { font-family: var(--serif); margin: 0 0 4px; }
.modal .modal-sub { color: var(--text-soft); font-size: 13px; margin-bottom: 14px; }
.modal .modal-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing:.5px; color: var(--c-person); margin: 12px 0 4px; }
.modal p { font-size: 14.5px; margin: 0 0 6px; }
.modal-close { float: right; background: var(--surface-2); border: none; width: 30px; height: 30px; border-radius: 50%; cursor: pointer; font-size: 15px; color: var(--text); }

.loading { text-align: center; color: var(--text-soft); padding: 50px 0; }
.spinner { width: 28px; height: 28px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; margin: 0 auto 12px; }
@keyframes spin { to { transform: rotate(360deg); } }

.footer { max-width: 820px; margin: 0 auto; padding: 30px 18px 50px; text-align: center; color: var(--text-soft); font-size: 13px; border-top: 1px solid var(--border); }
.footer p { margin: 4px 0; } .muted { opacity: .8; }