/* Exam point highlighting styles */

/* Highlight important terms in content */
.article .highlight {
  background: var(--color-high-freq);
  padding: 0 4px;
  border-radius: 3px;
  font-weight: 500;
}

/* Star rating for importance */
.importance {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.importance__star {
  color: var(--color-gray-300);
  font-size: 12px;
}

.importance__star.filled {
  color: var(--color-high-freq-border);
}

/* Exam year tags */
.exam-years {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-top: var(--space-2);
}

.exam-year {
  padding: 1px 6px;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-accent-bg);
  border: 1px solid var(--color-accent-light);
  border-radius: var(--radius-sm);
}

/* Section frequency indicator */
.section-freq {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-full);
}

.section-freq--high {
  color: var(--color-high-freq-text);
  background: var(--color-high-freq);
  border: 1px solid var(--color-high-freq-border);
}

.section-freq--medium {
  color: #92400e;
  background: #fef9c3;
  border: 1px solid #facc15;
}

.section-freq--low {
  color: var(--color-text-muted);
  background: var(--color-gray-100);
  border: 1px solid var(--color-border);
}

/* Knowledge point card */
.kp-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  overflow: hidden;
}

.kp-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: var(--color-gray-50);
  border-bottom: 1px solid var(--color-border-light);
  cursor: pointer;
  user-select: none;
}

.kp-card__title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
}

.kp-card__badges {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.kp-card__body {
  padding: var(--space-4);
}

.kp-card__body.collapsed {
  display: none;
}

/* Summary table for chapters */
.summary-table {
  margin: var(--space-6) 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.summary-table__header {
  padding: var(--space-3) var(--space-4);
  background: var(--color-gray-100);
  font-weight: 600;
  font-size: var(--text-sm);
  border-bottom: 2px solid var(--color-border);
}

.summary-table__row {
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-light);
  font-size: var(--text-sm);
  transition: background var(--transition-fast);
}

.summary-table__row:last-child {
  border-bottom: none;
}

.summary-table__row:hover {
  background: var(--color-gray-50);
}

.summary-table__name {
  flex: 1;
  font-weight: 500;
}

.summary-table__freq {
  width: 80px;
  text-align: center;
}

.summary-table__points {
  width: 100px;
  text-align: right;
  color: var(--color-text-muted);
}

/* Print styles */
@media print {
  .header, .sidebar, .toc, .menu-btn, .overlay,
  .search, .theme-btn, .breadcrumb {
    display: none !important;
  }

  .app {
    display: block;
  }

  .main {
    padding: 0;
    max-width: 100%;
  }

  .article h2, .article h3 {
    page-break-after: avoid;
  }

  .article pre, .article blockquote, .key-point, .high-freq-box {
    page-break-inside: avoid;
  }

  .freq-badge {
    border: 1px solid #999;
  }
}