.tech-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--spacing-lg);
  gap: var(--spacing-xs);
}

.tech-tabs .tab-button {
  background: none;
  border: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  position: relative;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.tech-tabs .tab-button.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
  background: var(--bg-tertiary);
}

.tech-tabs .tab-button:hover {
  color: var(--accent-primary);
  background: var(--bg-tertiary);
}

.tech-tabs .tab-button:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.tech-content {
  position: relative;
  min-height: 120px;
}

.tech-tab-content {
  display: none;
  animation: fadeIn 0.2s ease-in-out;
}

.tech-tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.subcategory-section {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  animation: slideDown 0.3s ease-out;
}

.subcategory-section h4 {
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.subcategory-section h4::before {
  content: "→";
  color: var(--accent-primary);
  font-weight: bold;
}

@keyframes slideDown {
  from {
    opacity: 0;
    max-height: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    max-height: 200px;
    transform: translateY(0);
  }
}

.subcategory-section .checkbox-group {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-xs);
}

.subcategory-section .checkbox-group label {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.subcategory-section .checkbox-group label:hover {
  background: var(--bg-primary);
  border-color: var(--border-color);
}

@media (max-width: 768px) {
  .tech-tabs {
    flex-wrap: wrap;
    gap: var(--spacing-xs);
  }
  
  .tech-tabs .tab-button {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.8125rem;
  }
  
  .subcategory-section .checkbox-group {
    grid-template-columns: 1fr;
  }
}