/* UCP Explained — reference page (uses styles.css variables) */

.explain-page {
  max-width: 640px;
  margin: 0 auto;
  min-height: 100dvh;
  padding: 0 var(--safe-right) calc(32px + var(--safe-bottom)) var(--safe-left);
}

.explain-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: calc(12px + var(--safe-top)) 16px 12px;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.explain-header h1 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0;
  flex: 1;
}

.explain-back {
  text-decoration: none;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 8px 4px;
  white-space: nowrap;
}

.explain-body {
  padding: 20px 16px 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.explain-lede {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
}

.explain-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 16px 14px;
}

.explain-section.nta {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  background: color-mix(in srgb, var(--accent) 8%, var(--surface));
}

.explain-section h2 {
  font-size: 1.05rem;
  margin: 0 0 6px;
}

.explain-section h3 {
  font-size: 0.92rem;
  margin: 14px 0 6px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
}

.explain-section p {
  margin: 0 0 10px;
  color: var(--text);
  font-size: 0.95rem;
}

.explain-section p:last-child {
  margin-bottom: 0;
}

.explain-section .muted {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.explain-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.rate-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 8px 0 4px;
}

.rate-table th,
.rate-table td {
  text-align: left;
  padding: 8px 6px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.rate-table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.rate-table td.pts {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  white-space: nowrap;
  text-align: right;
}

.rate-table tr:last-child td {
  border-bottom: none;
}

.rate-table .official {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.82rem;
}

.pill-list {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pill-list li {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 0.92rem;
}

.pill-list strong {
  display: block;
  margin-bottom: 2px;
}

.pill-list span {
  color: var(--text-muted);
  font-size: 0.86rem;
}

.rule-list {
  margin: 8px 0 0;
  padding-left: 1.15em;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.92rem;
}

.rule-list li::marker {
  color: var(--primary);
}

.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.toc a {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
}

.toc a:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.explain-footer {
  color: var(--text-muted);
  font-size: 0.82rem;
  padding: 8px 0 24px;
  line-height: 1.5;
}

.explain-footer a {
  color: var(--primary);
}