/* Add-only styles for the optional mathematics layer. */

[data-variant-enhancement="math-layer"] {
  margin-block: clamp(1.5rem, 4vw, 2.75rem);
  padding: clamp(1rem, 3vw, 1.5rem);
  border: 1px solid var(--line);
  border-inline-start: 0.28rem solid var(--accent);
  background: color-mix(in srgb, var(--wash) 72%, transparent);
}

[data-variant-enhancement="math-layer"] .variant-math-kicker {
  margin: 0 0 0.35rem;
  color: var(--accent-text);
  font-size: 0.72rem;
  font-weight: 760;
  letter-spacing: 0.09em;
  line-height: 1.4;
  text-transform: uppercase;
}

[data-variant-enhancement="math-layer"] h2,
[data-variant-enhancement="math-layer"] h3 {
  margin-block: 0 0.65rem;
}

[data-variant-enhancement="math-layer"] .variant-math-result,
[data-variant-enhancement="math-layer"] .variant-math-caveat,
[data-variant-enhancement="math-layer"] .variant-math-note {
  max-width: 68ch;
}

[data-variant-enhancement="math-layer"] .variant-math-result {
  margin-block: 0.4rem 0.85rem;
}

[data-variant-enhancement="math-layer"] .variant-math-caveat,
[data-variant-enhancement="math-layer"] .variant-math-note {
  color: var(--muted);
  font-size: 0.92em;
}

[data-variant-enhancement="math-layer"] .variant-math-caveat {
  margin-block: 0.7rem 1rem;
  padding-inline-start: 0.8rem;
  border-inline-start: 2px solid var(--line);
}

[data-variant-enhancement="math-layer"] .variant-math-details {
  margin-block-start: 1rem;
  border-top: 1px solid var(--line);
}

[data-variant-enhancement="math-layer"] .variant-math-details > summary {
  padding-block: 0.85rem 0.35rem;
  color: var(--accent-text);
  cursor: pointer;
  font-weight: 700;
}

[data-variant-enhancement="math-layer"] .variant-math-details > summary:hover {
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

[data-variant-enhancement="math-layer"] .variant-math-details > summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 0.2rem;
}

[data-variant-enhancement="math-layer"] .variant-math-detail-copy {
  padding-block: 0.35rem 0.2rem;
}

[data-variant-enhancement="math-layer"] .variant-math-equation-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

[data-variant-enhancement="math-layer"] .variant-math-equation-card {
  min-width: 0;
  padding: 0.75rem;
  border: 1px solid var(--line);
  background: var(--paper);
}

[data-variant-enhancement="math-layer"] .variant-math-equation-card > p {
  margin-block-start: 0;
}

[data-variant-enhancement="math-layer"] .variant-math-equation-pair > .variant-math-note {
  grid-column: 1 / -1;
}

[data-variant-enhancement="math-layer"] .variant-math-table-wrap {
  max-width: 100%;
  margin-block: 1rem;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--paper);
}

[data-variant-enhancement="math-layer"] .variant-math-table {
  width: 100%;
  min-width: 38rem;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

[data-variant-enhancement="math-layer"] .variant-math-table caption {
  padding: 0.75rem;
  color: var(--muted);
  text-align: start;
}

[data-variant-enhancement="math-layer"] .variant-math-table th,
[data-variant-enhancement="math-layer"] .variant-math-table td {
  padding: 0.65rem 0.75rem;
  border-block-start: 1px solid var(--line);
  text-align: start;
  vertical-align: top;
}

[data-variant-enhancement="math-layer"] .variant-math-table thead th {
  background: var(--wash);
  font-size: 0.83rem;
  letter-spacing: 0.025em;
}

[data-variant-enhancement="math-layer"] .variant-math-table tbody th {
  color: var(--strong);
  font-weight: 700;
}

[data-variant-enhancement="math-layer"] .variant-math-gradient-table td {
  white-space: nowrap;
}

[data-variant-enhancement="math-layer"] .variant-math-notation-table {
  min-width: 48rem;
}

[data-variant-enhancement="math-layer"] .variant-math-notation-table th:first-child {
  width: 19%;
}

[data-variant-enhancement="math-layer"] .variant-math-boundary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-block-start: 1rem;
}

[data-variant-enhancement="math-layer"] .variant-math-boundary-item {
  display: grid;
  gap: 0.35rem;
  padding: 0.8rem;
  border-block-start: 2px solid var(--accent);
  background: var(--paper);
}

[data-variant-enhancement="math-layer"] .variant-math-boundary-item > span {
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  [data-variant-enhancement="math-layer"] .variant-math-equation-pair,
  [data-variant-enhancement="math-layer"] .variant-math-boundary-grid {
    grid-template-columns: 1fr;
  }

  [data-variant-enhancement="math-layer"] .variant-math-equation-pair > .variant-math-note {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  [data-variant-enhancement="math-layer"] .variant-math-details > summary {
    scroll-behavior: auto;
  }
}

@media (forced-colors: active) {
  [data-variant-enhancement="math-layer"] {
    border-color: CanvasText;
    background: Canvas;
  }

  [data-variant-enhancement="math-layer"] .variant-math-equation-card,
  [data-variant-enhancement="math-layer"] .variant-math-table-wrap,
  [data-variant-enhancement="math-layer"] .variant-math-boundary-item {
    border-color: CanvasText;
    background: Canvas;
  }
}

@media print {
  [data-variant-enhancement="math-layer"] {
    margin-block: 14pt;
    padding: 10pt;
    border-color: #555;
    background: #fff;
    break-inside: avoid;
  }

  [data-variant-enhancement="math-layer"] .variant-math-details > * {
    display: block !important;
  }

  [data-variant-enhancement="math-layer"] .variant-math-table-wrap {
    overflow: visible;
    border-color: #777;
    background: #fff;
  }

  [data-variant-enhancement="math-layer"] .variant-math-table {
    min-width: 0;
    font-size: 8.5pt;
  }

  [data-variant-enhancement="math-layer"] .variant-math-equation-pair,
  [data-variant-enhancement="math-layer"] .variant-math-boundary-grid {
    grid-template-columns: 1fr;
  }
}