- Add support for hex, rgb, rgba, hsl color formats
- Enable gradient backgrounds (linear-gradient, radial-gradient)
- Convert page_background and card_background to textarea for multi-line gradients
- Update hero-section to use var(--page-bg) instead of hardcoded gradient
- Set default page_background to current gradient for backward compatibility
- Add detailed examples in English and Hungarian descriptions
- Add custom_css textarea setting in settings.yml
- Support custom CSS injection in welcome-banner component
- Allow admins to override or extend banner styles without modifying code
- Inject custom CSS only when banner is displayed
- Include English and Hungarian descriptions with examples
