/* Navigation Components */

/* Navigation Base */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.nav-item {
  display: flex;
  align-items: center;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-normal);
}

.nav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-card-hover);
}

.nav-link.active {
  color: var(--primary);
  background-color: var(--sidebar-active);
}

/* Breadcrumbs */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.breadcrumb-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

.breadcrumb-link:hover {
  color: var(--primary);
}

.breadcrumb-separator {
  color: var(--text-muted);
}

.breadcrumb-current {
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
}

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--space-xl);
}

.tab {
  padding: var(--space-lg) var(--space-xl);
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-normal);
  cursor: pointer;
}

.tab:hover {
  color: var(--text-primary);
  background-color: var(--bg-card-hover);
}

.tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Education Navigation */
.education-nav {
  position: sticky;
  top: 0;
  background-color: var(--bg-primary);
  padding: var(--space-lg) 0;
  margin-bottom: var(--space-2xl);
  z-index: 10;
  border-bottom: 1px solid var(--border-color);
}

.education-nav-inner {
  display: flex;
  overflow-x: auto;
  white-space: nowrap;
  padding-bottom: var(--space-sm);
  scrollbar-width: thin;
  scrollbar-color: var(--primary) var(--bg-secondary);
}

.education-nav-inner::-webkit-scrollbar {
  height: 6px;
}

.education-nav-inner::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 3px;
}

.education-nav-inner::-webkit-scrollbar-thumb {
  background-color: var(--primary);
  border-radius: 3px;
}

.education-nav-item {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-normal);
  margin-right: var(--space-sm);
}

.education-nav-item:hover {
  color: var(--text-primary);
  background-color: var(--bg-card-hover);
}

.education-nav-item.active {
  color: var(--primary);
  background-color: var(--sidebar-active);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.pagination-item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-normal);
}

.pagination-item:hover {
  background-color: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--primary);
}

.pagination-item.active {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
}

.pagination-item:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Mobile Navigation */
.mobile-nav {
  display: none;
  background-color: transparent;
  padding: var(--space-sm);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 50;
}

.mobile-nav-container {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.mobile-menu-button {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  width: 40px;
  height: 40px;
}

.mobile-menu-button:hover {
  background-color: var(--bg-card-hover);
  color: var(--text-primary);
}

.mobile-menu-button:active {
  transform: scale(0.95);
}

/* Responsive Navigation */
@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: var(--space-xs);
  }

  .nav-link {
    width: 100%;
    justify-content: flex-start;
  }

  .tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
  }

  .tab {
    white-space: nowrap;
    min-width: max-content;
  }

  .mobile-nav {
    display: block;
  }

  .pagination {
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  .pagination-item {
    width: 36px;
    height: 36px;
    font-size: var(--font-size-sm);
  }
}

/* ── Language toggle ──────────────────────────────────────── */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-right: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 0.4rem;
  padding: 0.15rem 0.35rem;
  background: var(--bg-secondary);
}

.lang-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 0.2rem 0.3rem;
  border-radius: 3px;
  letter-spacing: 0.04em;
  transition: color 0.15s ease, background 0.15s ease;
  line-height: 1;
}

.lang-btn:hover {
  color: var(--text-primary);
}

.lang-btn.active {
  color: var(--primary);
  background: rgba(6, 182, 212, 0.1);
}

.lang-sep {
  font-size: 0.65rem;
  color: var(--border-color);
  pointer-events: none;
  user-select: none;
}