Now let me refine the modal to be more sleek and modern - smaller header, lighter borders, more subtle styling:

Now let me also refine the modal container and Step 2 header to be more sleek:

Now let me update Step 2 header to be more minimal:

Now let me update the Step 2 header padding and the filter dropdowns to be more compact:

Now let me update the generating and success steps to match the new lighter style:

Now let me update Step 4 (success) to match the lighter style:

I've refined the modal to be more sleek and modern with the following changes:

1. Narrower modal - Reduced from 560px to 440px (Step 1) and 680px to 640px (Step 2)
2. Smaller typography - Headers reduced from 16-18px to 13px, body text from 12-13px to 10-12px
3. Lighter styling - Removed heavy borders, replaced with subtle bg-neutral-50 fills for inputs and chips
4. Tighter spacing - Reduced padding from p-6/p-8 to p-5/p-6, smaller gaps throughout
5. Softer shadows - Lighter overlay (0.35 vs 0.4), softer shadow on modal
6. Smaller UI elements - Checkmarks, spinners, buttons, and icons all scaled down proportionally
7. Rounded corners - Changed from rounded-lg to rounded-md for a more refined look

Great! The modal is now much lighter and more modern. The smaller fonts, tighter spacing, softer shadows, and reduced chrome make it feel sleeker and less heavy.