- Create base.html with snazzy gradient design
- Add navigation header with glassmorphism effect
- Add Font Awesome icons throughout
- Update all templates to extend base:
- index.html: Home page with boxes and thing types
- box_detail.html: Box contents table
- thing_detail.html: Thing details with move form
- thing_type_detail.html: Type hierarchy and things
- search.html: Search functionality
- add_things.html: Form for adding things
- Add hover effects, smooth transitions, and modern UI
- Use purple gradient color scheme (#667eea to #764ba2)
- Add breadcrumbs for navigation
- Improve accessibility with proper focus states
