/* =========================================================================
   GEOMETOR • Nicomachus — Introductio Arithmetica (Ἀριθμητικὴ Εἰσαγωγή)
   Polytonic Greek Typography, Hoche/D'Ooge Apparatus & Adaptive SVG Styling
   Complements foundation theme's book_layout.html, _book.scss & geometor_interactive.js
   ========================================================================= */

:root {
  --nico-accent: #b45309;
  --nico-accent-soft: rgba(180, 83, 9, 0.10);
  --nico-border: rgba(100, 116, 139, 0.25);
  --nico-folio-fg: #64748b;
  --nico-greek-font: "Gentium Plus", "GFS Porson", "New Athena Unicode",
    "Palatino Linotype", "Noto Serif", "Times New Roman", Georgia, serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --nico-accent: #e2b553;
    --nico-accent-soft: rgba(226, 181, 83, 0.12);
    --nico-border: rgba(148, 163, 184, 0.24);
    --nico-folio-fg: #94a3b8;
  }
}

html[data-theme="dark"] {
  --nico-accent: #e2b553;
  --nico-accent-soft: rgba(226, 181, 83, 0.12);
  --nico-border: rgba(148, 163, 184, 0.24);
  --nico-folio-fg: #94a3b8;
}

html[data-theme="light"] {
  --nico-accent: #b45309;
  --nico-accent-soft: rgba(180, 83, 9, 0.10);
  --nico-border: rgba(100, 116, 139, 0.25);
  --nico-folio-fg: #64748b;
}

/* Polytonic Greek readability on synchronized -el track pages and epigraphs */
.book-content :lang(el),
.book-track-el .book-body p,
.book-body blockquote em {
  font-family: var(--nico-greek-font);
  line-height: 1.84;
  letter-spacing: 0.005em;
}

/* Subtle styling for Hoche / D'Ooge folio markers */
.folio-marker,
.book-folio {
  color: var(--nico-folio-fg);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.03em;
}

/* Concordance and apparatus table refinement */
.book-body table.docutils,
main table.docutils {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0 1.75rem;
  font-size: 0.94rem;
}

.book-body table.docutils th,
main table.docutils th {
  border-bottom: 2px solid var(--nico-border);
  text-align: left;
  padding: 0.55rem 0.7rem;
}

.book-body table.docutils td,
main table.docutils td {
  border-bottom: 1px solid var(--nico-border);
  padding: 0.55rem 0.7rem;
  vertical-align: top;
}

/* =========================================================================
   Interactive .euclid-graphic SVG Styling (Light & Dark Adaptive)
   Inline .. picture:: SVGs strip embedded <style> so theme switching works
   cleanly via html[data-theme] and prefers-color-scheme.
   ========================================================================= */

.euclid-graphic {
  --svg-ink: #1e293b;
  --svg-muted: #57534e;
  --svg-accent: #b45309;
  --svg-blue: #0369a1;
  --svg-green: #15803d;
  --svg-rose: #be123c;
  --svg-violet: #6d28d9;
  --svg-card-bg: #f8fafc;
  --svg-card-stroke: #94a3b8;
  --svg-pt-stroke: #ffffff;
  font-family: "Gentium Plus", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  display: block;
  width: 100%;
  height: auto;
}

@media (prefers-color-scheme: dark) {
  .euclid-graphic {
    --svg-ink: #e8e2d5;
    --svg-muted: #a8a195;
    --svg-accent: #e2b553;
    --svg-blue: #6ba9d8;
    --svg-green: #78c491;
    --svg-rose: #dc7d7d;
    --svg-violet: #b48ee0;
    --svg-card-bg: #202026;
    --svg-card-stroke: #8e887c;
    --svg-pt-stroke: #18181c;
  }
}

html[data-theme="dark"] .euclid-graphic {
  --svg-ink: #e8e2d5;
  --svg-muted: #a8a195;
  --svg-accent: #e2b553;
  --svg-blue: #6ba9d8;
  --svg-green: #78c491;
  --svg-rose: #dc7d7d;
  --svg-violet: #b48ee0;
  --svg-card-bg: #202026;
  --svg-card-stroke: #8e887c;
  --svg-pt-stroke: #18181c;
}

html[data-theme="light"] .euclid-graphic {
  --svg-ink: #1e293b;
  --svg-muted: #57534e;
  --svg-accent: #b45309;
  --svg-blue: #0369a1;
  --svg-green: #15803d;
  --svg-rose: #be123c;
  --svg-violet: #6d28d9;
  --svg-card-bg: #f8fafc;
  --svg-card-stroke: #94a3b8;
  --svg-pt-stroke: #ffffff;
}

.euclid-graphic .title {
  fill: var(--svg-ink);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.euclid-graphic .subtitle {
  fill: var(--svg-muted);
  font-size: 12px;
  font-style: italic;
}

.euclid-graphic .lbl {
  fill: var(--svg-ink);
  font-size: 13px;
}

.euclid-graphic .lbl-b {
  fill: var(--svg-ink);
  font-size: 13.5px;
  font-weight: 700;
}

.euclid-graphic .lbl-sm {
  fill: var(--svg-muted);
  font-size: 11.5px;
}

.euclid-graphic .lbl-gr {
  fill: var(--svg-accent);
  font-size: 13px;
  font-style: italic;
}

.euclid-graphic .lbl-accent {
  fill: var(--svg-accent);
  font-weight: 700;
}

.euclid-graphic .lbl-blue {
  fill: var(--svg-blue);
}

.euclid-graphic .lbl-green {
  fill: var(--svg-green);
}

.euclid-graphic .lbl-rose {
  fill: var(--svg-rose);
}

.euclid-graphic .lbl-violet {
  fill: var(--svg-violet);
}

.euclid-graphic .mono {
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 12px;
  fill: var(--svg-ink);
}

.euclid-graphic .construct {
  stroke: var(--svg-ink);
  stroke-width: 1.75;
  fill: none;
}

.euclid-graphic .guide {
  stroke: var(--svg-muted);
  stroke-width: 1.2;
  stroke-dasharray: 5 4;
  fill: none;
}

.euclid-graphic .guide-accent {
  stroke: var(--svg-accent);
  stroke-width: 1.6;
  stroke-dasharray: 5 4;
  fill: none;
}

.euclid-graphic .accent-line {
  stroke: var(--svg-accent);
  stroke-width: 2.2;
  fill: none;
}

.euclid-graphic .blue-line {
  stroke: var(--svg-blue);
  stroke-width: 2.0;
  fill: none;
}

.euclid-graphic .green-line {
  stroke: var(--svg-green);
  stroke-width: 2.0;
  fill: none;
}

.euclid-graphic .rose-line {
  stroke: var(--svg-rose);
  stroke-width: 2.0;
  fill: none;
}

.euclid-graphic .violet-line {
  stroke: var(--svg-violet);
  stroke-width: 2.0;
  fill: none;
}

.euclid-graphic .grid-line {
  stroke: var(--svg-muted);
  stroke-opacity: 0.25;
  stroke-width: 0.85;
  fill: none;
}

.euclid-graphic .card {
  fill: var(--svg-card-bg);
  fill-opacity: 0.82;
  stroke: var(--svg-card-stroke);
  stroke-width: 1.15;
}

.euclid-graphic .card-accent {
  fill: var(--svg-card-bg);
  fill-opacity: 0.88;
  stroke: var(--svg-accent);
  stroke-width: 1.85;
}

.euclid-graphic .card-blue {
  fill: var(--svg-card-bg);
  fill-opacity: 0.88;
  stroke: var(--svg-blue);
  stroke-width: 1.7;
}

.euclid-graphic .card-green {
  fill: var(--svg-card-bg);
  fill-opacity: 0.88;
  stroke: var(--svg-green);
  stroke-width: 1.7;
}

.euclid-graphic .card-violet {
  fill: var(--svg-card-bg);
  fill-opacity: 0.88;
  stroke: var(--svg-violet);
  stroke-width: 1.7;
}

.euclid-graphic .card-rose {
  fill: var(--svg-card-bg);
  fill-opacity: 0.88;
  stroke: var(--svg-rose);
  stroke-width: 1.7;
}

.euclid-graphic .pt {
  fill: var(--svg-ink);
}

.euclid-graphic .pt-accent {
  fill: var(--svg-accent);
  stroke: var(--svg-pt-stroke);
  stroke-width: 1.1;
}

.euclid-graphic .alpha-pebble {
  font-size: 15px;
  font-weight: 700;
  text-anchor: middle;
  dominant-baseline: central;
}

.euclid-graphic #geom-tick-1 line,
.euclid-graphic #geom-tick-2 line,
.euclid-graphic #geom-tick-3 line {
  stroke: var(--svg-accent);
}

.euclid-graphic #arrow-accent path {
  fill: var(--svg-accent);
}

.euclid-graphic #arrow-muted path {
  fill: var(--svg-muted);
}