/* ============================================
   GLOSSARY PAGE STYLES
   ============================================ */

/* Search bar */
.glossary-search {
  display: flex;
  gap: 12px;
  align-items: center;
  margin: 32px 0 8px;
  padding: 14px 16px;
  background: var(--color-surface-2);
  border: 1.5px solid var(--color-border);
  border-radius: 12px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.glossary-search:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}
.glossary-search svg {
  flex-shrink: 0;
  color: var(--color-text-muted);
}
.glossary-search input {
  flex: 1;
  border: 0;
  background: transparent;
  outline: none;
  font: inherit;
  font-size: var(--text-base);
  color: var(--color-text);
  padding: 4px 0;
}
.glossary-search input::placeholder { color: var(--color-text-faint); }

.glossary-count {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin: 0 4px 32px;
}

/* Two-column layout: TOC + terms */
.glossary-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 900px) {
  .glossary-layout { grid-template-columns: 1fr; gap: 24px; }
}

.glossary-toc {
  position: sticky;
  top: 96px;
  align-self: start;
}
@media (max-width: 900px) {
  .glossary-toc { position: static; }
}
.toc-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-warm);
  margin: 0 0 12px;
}
.glossary-toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.glossary-toc a {
  display: block;
  padding: 6px 10px;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 14px;
  border-radius: 6px;
  border-left: 2px solid transparent;
  transition: color var(--transition), background var(--transition), border-color var(--transition);
}
.glossary-toc a:hover {
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border-left-color: var(--color-accent);
}

/* Term groups */
.glossary-body { display: flex; flex-direction: column; gap: 48px; }
.gloss-group h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.8vw, 1.875rem);
  color: var(--color-text);
  margin: 0 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-divider);
  scroll-margin-top: 96px;
}
.gloss-group dl {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.gloss-term {
  padding: 16px 20px;
  border-radius: 10px;
  border: 1px solid transparent;
  scroll-margin-top: 96px;
  transition: background var(--transition), border-color var(--transition);
}
.gloss-term dt {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-lg);
  color: var(--color-text);
  margin: 0 0 6px;
}
.gloss-term dd {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.6;
}
.term-link {
  color: inherit;
  text-decoration: none;
}
.term-link:hover { color: var(--color-accent); }

.term-see {
  display: inline-block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  text-decoration: none;
}
.term-see:hover { text-decoration: underline; }

/* Highlight animation when linked to via #hash */
.gloss-term.is-flashing {
  animation: gloss-flash 1.8s ease-out;
}
@keyframes gloss-flash {
  0% {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-text-inverse);
  }
  15% {
    background: var(--color-accent-soft);
    border-color: var(--color-accent);
  }
  100% {
    background: transparent;
    border-color: transparent;
  }
}
.gloss-term.is-flashing dt { color: inherit; }

/* Empty state */
.glossary-empty {
  padding: 48px 24px;
  text-align: center;
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  border-radius: 12px;
}

/* Screen-reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}