:root {
  --reading-size: 22px;
  --line-height: 1.65;
  --max-width: 44rem;

  --bg: #fbfaf6;
  --bg-elev: #ffffff;
  --bg-box: #f1ede2;
  --bg-popover: #ffffff;
  --text: #1d1c1a;
  --text-muted: #66635c;
  --border: #d9d4c4;
  --rule: #ccc6b2;
  --accent: #9a5a1f;
  --bible-bg: #f7f1e2;
  --shadow: 0 8px 28px rgba(40, 30, 10, 0.18);
}

html[data-theme="dark"] {
  --bg: #16181c;
  --bg-elev: #1d1f24;
  --bg-box: #23262d;
  --bg-popover: #24272d;
  --text: #e7e3da;
  --text-muted: #9a948a;
  --border: #353841;
  --rule: #2c2f37;
  --accent: #d2a36b;
  --bible-bg: #1e2128;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.55);
}

* { box-sizing: border-box; }

html { background: var(--bg); color: var(--text); scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Iowan Old Style", "Charter", "Source Serif Pro", Cambria, Georgia, serif;
  font-size: var(--reading-size);
  line-height: var(--line-height);
  -webkit-font-smoothing: antialiased;
  padding-bottom: 4rem;
}

.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.6rem 1rem;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--border);
  font-family: -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
  font-size: 14px;
}
.topbar a.home {
  color: var(--text); text-decoration: none; font-weight: 600;
  padding: 4px 10px; border: 1px solid var(--border); border-radius: 8px;
}
.topbar a.home:hover { background: var(--bg-box); }
.topbar .title {
  flex: 1; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.topbar .controls { display: flex; gap: 6px; }
.btn {
  background: var(--bg-elev); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 4px 10px; font-size: 13px; cursor: pointer;
  font-family: inherit;
}
.btn:hover { background: var(--bg-box); }
.btn.icon { width: 32px; padding: 4px 0; text-align: center; font-weight: 600; }
a.btn.icon { display: inline-block; line-height: 1.5; text-decoration: none; }

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.25rem 5rem;
}

main p { margin: 0 0 0.8em; text-align: justify; hyphens: auto; }
main p:first-child { margin-top: 0; }
main img { max-width: 100%; height: auto; display: block; margin: 1.2em auto; border-radius: 6px; }
/* Kindle-style separator bullets used by Matthew Henry's source -- hide */
main img[src*="00004.jpg"], main img[src*="00005.jpg"] { display: none; }
main h1, main h2, main h3 { line-height: 1.2; }
main h1 { font-size: 1.9em; margin: 1em 0 0.4em; font-weight: 700; color: var(--text); }
main h2 { font-size: 1.4em; margin: 1.4em 0 0.4em; color: var(--accent); }
main h3 { font-size: 1.1em; margin: 1em 0 0.3em; font-variant: small-caps; letter-spacing: 0.04em; }
main a { color: var(--accent); text-decoration: none; border-bottom: 1px dotted transparent; }
main a:hover { border-bottom-color: var(--accent); }

main table { border-collapse: collapse; margin: 1em 0; width: 100%; font-size: 0.92em; }
main td, main th { padding: 6px 8px; border-bottom: 1px solid var(--rule); vertical-align: top; text-align: left; }
main ul, main ol { margin: 0.6em 0 1em; padding-left: 1.6em; }
main blockquote {
  margin: 0.3em 0;
  padding: 0 0 0 1.4em;
  border: none;
}
/* Only treat top-level blockquotes as actual quote callouts */
main > blockquote, main p + blockquote {
  margin: 1em 0;
  padding: 0.3em 0 0.3em 1em;
  border-left: 3px solid var(--accent);
  color: var(--text-muted);
}
main blockquote blockquote {
  border-left: none;
  color: inherit;
  padding-left: 1.4em;
}

/* index page */
.index-wrap { max-width: 56rem; margin: 0 auto; padding: 2.5rem 1.25rem; }
.index-wrap h1 { font-size: 2.4em; margin: 0 0 0.15em; }
.index-wrap .subtitle { color: var(--text-muted); margin: 0 0 2em; font-style: italic; }
.index-wrap h2 {
  font-size: 1.1em; font-variant: small-caps; letter-spacing: 0.06em;
  margin: 2em 0 0.4em; color: var(--accent);
  border-bottom: 1px solid var(--rule); padding-bottom: 4px;
}
.section-list { list-style: none; padding: 0; margin: 0; }
.section-list li a {
  display: flex; justify-content: space-between; gap: 1em;
  padding: 8px 12px; border-radius: 8px;
  color: var(--text); text-decoration: none;
  border-bottom: 1px solid var(--rule);
}
.section-list li a:hover { background: var(--bg-box); color: var(--accent); }
.section-list .kind {
  color: var(--text-muted); font-size: 0.85em; font-style: italic;
}

/* ---------- popover trigger styles ---------- */
.footnote-ref, .xref-ref, .studynote-ref, .alter-trigger {
  color: var(--accent);
  cursor: pointer;
  text-decoration: none;
  border-bottom: 1px dotted var(--accent);
}
.footnote-ref:hover, .xref-ref:hover, .studynote-ref:hover, .alter-trigger:hover {
  color: color-mix(in srgb, var(--accent) 75%, white);
  border-bottom-style: solid;
}

span.esv-note-ref {
  cursor: pointer;
  border-bottom: 1px dotted var(--accent);
  padding-bottom: 1px;
  color: var(--accent);
}
span.esv-note-ref:hover { color: color-mix(in srgb, var(--accent) 70%, white); }

sup.has-commentary a {
  color: var(--accent);
  cursor: pointer;
  border-bottom: 1px dotted var(--accent);
  padding-bottom: 1px;
}
sup.has-commentary a:hover { color: color-mix(in srgb, var(--accent) 70%, white); border-bottom-style: solid; }

/* Hide source-side footnote/cross-ref/ancillary content that has been
   surfaced via popovers. */
.hidden-popover-data { display: none !important; }

/* flat book link cards (index pages) */
.card-link {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  margin: 0.4em 0;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.05em;
  transition: background 0.12s ease, border-color 0.12s ease, transform 0.08s ease;
}
.card-link:hover {
  background: var(--bg-box);
  border-color: var(--accent);
  color: var(--accent);
}
.card-link:active { transform: translateY(1px); }
.card-link .arrow { color: var(--text-muted); font-weight: 400; }
.card-link:hover .arrow { color: var(--accent); }

/* book cards (collapsible) */
.book-card {
  border: 1px solid var(--border); border-radius: 10px;
  margin: 0.6em 0; background: var(--bg-elev); overflow: hidden;
}
.book-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; cursor: pointer; user-select: none;
  font-weight: 700; font-size: 1.05em;
}
.book-head:hover { background: var(--bg-box); }
.book-head .meta { font-size: 0.85em; color: var(--text-muted); font-weight: 400; }
.book-body { display: none; padding: 4px 12px 12px; border-top: 1px solid var(--rule); }
.book-card.open .book-body { display: block; }
.book-card.open .book-head .chev { transform: rotate(90deg); }
.chev { display: inline-block; transition: transform 0.15s ease; margin-right: 8px; color: var(--text-muted); }
.intro-link { display: block; margin: 6px 0 4px; color: var(--accent); font-style: italic; }
.ch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  gap: 6px; margin-top: 8px;
}
.ch-grid a {
  display: block; text-align: center; padding: 6px 4px;
  border: 1px solid var(--border); border-radius: 6px;
  font-size: 0.92em; color: var(--text);
}
.ch-grid a:hover { background: var(--bg-box); text-decoration: none; color: var(--accent); }
.volume-head {
  font-size: 1.1em; font-variant: small-caps; letter-spacing: 0.08em;
  color: var(--accent); margin: 2em 0 0.4em;
  border-bottom: 1px solid var(--rule); padding-bottom: 4px;
}

/* sidebars (callouts) -- MacArthur uses these */
.sidebar, .side, div.side {
  background: var(--bg-box);
  border-left: 4px solid var(--accent);
  border-radius: 6px;
  padding: 0.9em 1.1em; margin: 1.4em 0;
}
.sidebar p, .side p, div.side p { text-align: left; hyphens: none; }

/* popover */
#popover-host { position: fixed; inset: 0; pointer-events: none; z-index: 100; }
.popover {
  position: absolute;
  max-width: min(38rem, 92vw);
  max-height: min(60vh, 32rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--bg-popover);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 14px 16px 12px;
  font-size: 0.95em;
  line-height: 1.55;
  pointer-events: auto;
  animation: pop-in 0.14s ease-out;
}
.popover .popover-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px;
  font-family: -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
  font-size: 12px; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600;
}
.popover .popover-close {
  background: transparent; border: none; color: var(--text-muted);
  font-size: 20px; line-height: 1; cursor: pointer;
  padding: 0; width: 24px; height: 24px;
}
.popover .popover-close:hover { color: var(--text); }
.popover .popover-body p { text-align: left; margin: 0.4em 0; hyphens: none; }
.popover .popover-body a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px dotted var(--accent);
}
.popover .popover-body a:hover {
  color: color-mix(in srgb, var(--accent) 75%, white);
  border-bottom-style: solid;
}
@keyframes pop-in {
  from { opacity: 0; transform: translateY(4px) scale(0.98); }
  to   { opacity: 1; transform: none; }
}

@media (max-width: 640px) {
  .topbar { font-size: 12px; padding: 0.5rem 0.75rem; }
  main { padding: 1.5rem 1rem 4rem; }
}