- Changed from small bottom-right toast to large top-center alert
- Added gradient backgrounds (green for success, red for error, orange for warning)
- Added large icons (check circle, exclamation circle, warning triangle)
- Centered at top of page with 400-600px width
- Smooth slide-down animation on appear, slide-up on dismiss
- Auto-dismisses after 4 seconds
- Much more noticeable for important actions like saving settings