/* translit-tables.css (v1.1 - Scoped Variables)
   Unified transliteration tables styles
   FIX: Renamed variables to --tt-* to avoid clashing with river-theme.css
*/

:root {
  --tt-accent: #525d60;                 /* primary accent (teal) */
  --tt-ink: #0f1b1b;                    /* glyph color */
  --tt-roman: #333333;                  /* translit color */
  --tt-neutral: rgba(0,0,0,0.06);       /* cell vertical separators */
  --tt-hover: rgba(46,86,82,0.06);      /* hover wash */

  --mongolian-lucent: rgba(47,79,138,0.1);  /* faint indigo */
  --tibetan-lucent:   rgba(101, 45, 59,0.08);  /* faint purple */
  --devanagari-lucent: rgba(49,109,102,0.1); /* faint teal */

  --max-width-translit: 920px;

  /* border widths */
  --outer-border-width: 2px;
  --pair-border-width: 2px;
  --row-border-width: 1px;
  --script-underline-width: 1px;

  /* script font sizes (desktop) */
  --mongolian-script-size: 1.95rem;
  --tibetan-script-size: 2rem;
  --devanagari-script-size: 1.35rem;

  --script-size-mobile-scale: 0.72;
}

/* Base: applies to tables using .translit-table or specific classes */
.translit-table,
.mongol-translit,
.tibetan-translit,
.tibetan-wylie,
.devanagari-translit,
.sanskrit-translit {
  border-collapse: collapse;
  table-layout: fixed;
  width: 100%;
  max-width: var(--max-width-translit);
  margin: 1rem auto;
  text-align: center;
  background: #ffffff;
  border: var(--outer-border-width) solid var(--tt-accent);
  box-shadow: 0 6px 14px rgba(0,0,0,0.04);
}

/* Cells: vertical separators only */
.translit-table td,
.mongol-translit td,
.tibetan-translit td,
.tibetan-wylie td,
.devanagari-translit td,
.sanskrit-translit td {
  padding: 0.42rem 0.28rem;
  vertical-align: middle;
  border-left: 1px solid var(--tt-neutral);
  border-right: 1px solid var(--tt-neutral);
  background: #ffffff;
  transition: background .12s ease;
}

/* Default thin per-row border */
.translit-table tr td,
.mongol-translit tr td,
.tibetan-translit tr td,
.tibetan-wylie tr td,
.devanagari-translit tr td,
.sanskrit-translit tr td {
  border-bottom: var(--row-border-width) solid rgba(0,0,0,0.08);
}

/* Mongolian script rows: larger + lucent tint + underline */
.mongol-translit tr:nth-child(odd) td {
  font-size: var(--mongolian-script-size);
  line-height: 1.88;
  color: var(--tt-ink);
  font-weight: 500;
  border-bottom: var(--script-underline-width) solid var(--tt-accent);
  background: var(--mongolian-lucent);
}

/* Tibetan (Arigali / translit rows) */
.tibetan-translit tr:nth-child(odd) td,
.tibetan-wylie tr:nth-child(odd) td {
  font-size: var(--tibetan-script-size);
  line-height: 1.88;
  color: var(--tt-ink);
  font-weight: 500;
  border-bottom: var(--script-underline-width) solid var(--tt-accent);
  background: var(--tibetan-lucent);
}

/* Devanagari script rows: keep size + lucent tint */
.devanagari-translit tr:nth-child(odd) td,
.sanskrit-translit tr:nth-child(odd) td {
  font-size: var(--devanagari-script-size);
  line-height: 1.7;
  color: var(--tt-ink);
  font-weight: 500;
  border-bottom: var(--script-underline-width) solid var(--tt-accent);
  background: var(--devanagari-lucent);
}

/* Transliteration (roman) rows: neutral smaller */
.translit-table tr:nth-child(even) td,
.mongol-translit tr:nth-child(even) td,
.tibetan-translit tr:nth-child(even) td,
.tibetan-wylie tr:nth-child(even) td,
.devanagari-translit tr:nth-child(even) td,
.sanskrit-translit tr:nth-child(even) td {
  font-family: "Noto Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 1.0rem;
  color: var(--tt-roman);
}

/* Strong separator after every two rows */
.translit-table tr:nth-child(2n) td,
.mongol-translit tr:nth-child(2n) td,
.tibetan-translit tr:nth-child(2n) td,
.tibetan-wylie tr:nth-child(2n) td,
.devanagari-translit tr:nth-child(2n) td,
.sanskrit-translit tr:nth-child(2n) td {
  border-bottom: var(--pair-border-width) solid var(--tt-accent);
}

/* Avoid double bottom on last row */
.translit-table tr:last-child td,
.mongol-translit tr:last-child td,
.tibetan-translit tr:last-child td,
.tibetan-wylie tr:last-child td,
.devanagari-translit tr:last-child td,
.sanskrit-translit tr:last-child td {
  border-bottom: none;
}

/* Hover */
.translit-table td:hover,
.mongol-translit td:hover,
.tibetan-translit td:hover,
.tibetan-wylie td:hover,
.devanagari-translit td:hover,
.sanskrit-translit td:hover {
  background: var(--tt-hover);
}

/* Responsive: scale down script sizes on small screens */
@media (max-width: 720px) {
  .mongol-translit tr:nth-child(odd) td { font-size: calc(var(--mongolian-script-size) * var(--script-size-mobile-scale)); }
  .tibetan-translit tr:nth-child(odd) td,
  .tibetan-wylie tr:nth-child(odd) td { font-size: calc(var(--tibetan-script-size) * var(--script-size-mobile-scale)); }
  .devanagari-translit tr:nth-child(odd) td,
  .sanskrit-translit tr:nth-child(odd) td { font-size: calc(var(--devanagari-script-size) * var(--script-size-mobile-scale)); }

  .translit-table,
  .mongol-translit,
  .tibetan-translit,
  .tibetan-wylie,
  .devanagari-translit,
  .sanskrit-translit { max-width: 100%; margin: 0.8rem auto; }
}

/* ---------- Vertical / Rotated helpers ---------- */
.vertical-script {
  writing-mode: vertical-rl;
  text-orientation: upright;
  white-space: nowrap;
  display: inline-block;
  line-height: 1.0;
  padding: 0.25rem 0.4rem;
  transform-origin: center center;
  background: rgba(49,109,102,0.02);
}
.rotated-90 {
  display: inline-block;
  transform: rotate(-90deg);
  transform-origin: center center;
  white-space: nowrap;
  line-height: 1;
  padding: 0.15rem 0.25rem;
}
.translit-rotated-cell {
  vertical-align: middle;
  padding: 0.45rem 0.6rem;
  overflow: visible;
  white-space: nowrap;
}
.translit-vertical-cell {
  height: 6.2rem;
  min-width: 2.2rem;
}
@media (max-width: 720px) {
  .vertical-script { line-height: 1.05; font-size: 0.92em; }
  .rotated-90 { transform: rotate(-90deg) scale(0.95); }
}