/* ============================================================================
 * Breadcrumb Navigation
 *
 * Horizontal trail: Home > Track > Module > Mode
 * Injected just below the global nav on study, flash, practice, exam pages.
 * Uses design tokens from theme.css — no hardcoded colors.
 * ============================================================================ */

.breadcrumb-bar {
  background: var(--surface-muted);
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 0.5rem var(--space-lg);
  line-height: 1.4;
}

.breadcrumb-bar__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
}

.breadcrumb-bar__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0;
}

.breadcrumb-bar__item {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
}

.breadcrumb-bar__sep {
  margin: 0 0.4rem;
  color: var(--text-muted);
  opacity: 0.6;
  user-select: none;
}

.breadcrumb-bar__link {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.breadcrumb-bar__link:hover,
.breadcrumb-bar__link:focus-visible {
  color: var(--primary-text);
  text-decoration: underline;
}

.breadcrumb-bar__current {
  color: var(--text-main);
  font-weight: 500;
}

/* ── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 600px) {
  .breadcrumb-bar {
    padding: 0.4rem 1rem;
    font-size: 0.75rem;
  }

  .breadcrumb-bar__list {
    flex-wrap: wrap;
  }

  .breadcrumb-bar__item {
    white-space: normal;
  }
}