/* ==========================================================================
   Glossary Page Styles
   ========================================================================== */

.glossary-layout {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: var(--space-5);
  align-items: start;
}

/* --- A-Z Navigation --- */
.glossary-az-nav {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-5));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.glossary-az-link {
  width: 36px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--text-tertiary);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.glossary-az-link:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.glossary-az-link.active {
  background: var(--accent-primary);
  color: white;
}

.glossary-az-link.disabled {
  opacity: 0.3;
  pointer-events: none;
}

/* --- Glossary Search --- */
.glossary-search {
  max-width: 500px;
  margin-bottom: var(--space-6);
}

/* --- Letter Section --- */
.glossary-letter-section {
  margin-bottom: var(--space-6);
}

.glossary-letter-heading {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--accent-primary);
  padding-bottom: var(--space-3);
  border-bottom: 3px solid var(--accent-primary);
  margin-bottom: var(--space-4);
}

/* --- Glossary Entry --- */
.glossary-entry {
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
  overflow: hidden;
}

.glossary-entry-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  background: var(--bg-card);
  text-align: left;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.glossary-entry-trigger:hover {
  background: var(--bg-secondary);
}

.glossary-entry-term {
  font-weight: 700;
  font-size: var(--text-base);
}

.glossary-entry-pos {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  font-style: italic;
  margin-left: var(--space-2);
}

.glossary-entry-preview {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-left: var(--space-4);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.glossary-entry-arrow {
  color: var(--text-tertiary);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.glossary-entry.expanded .glossary-entry-arrow {
  transform: rotate(180deg);
}

.glossary-entry-content {
  padding: 0 var(--space-5);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  background: var(--bg-secondary);
}

.glossary-entry.expanded .glossary-entry-content {
  padding: var(--space-4) var(--space-5);
  max-height: 500px;
}

.glossary-definition {
  font-size: var(--text-base);
  line-height: 1.7;
  margin-bottom: var(--space-3);
}

.glossary-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.glossary-meta-item {
  font-size: var(--text-sm);
}

.glossary-meta-label {
  font-weight: 600;
  color: var(--text-tertiary);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.glossary-meta-value {
  color: var(--text-secondary);
  margin-top: var(--space-1);
}

.glossary-related-terms {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.glossary-related-link {
  font-size: var(--text-sm);
  color: var(--text-link);
  cursor: pointer;
}

.glossary-related-link:hover {
  text-decoration: underline;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .glossary-layout {
    grid-template-columns: 1fr;
  }

  .glossary-az-nav {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-1);
    margin-bottom: var(--space-4);
    padding: var(--space-3);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
  }

  .glossary-az-link {
    width: 28px;
    height: 28px;
  }

  .glossary-entry-preview {
    display: none;
  }
}