When in doubt, add more whitespace. Almost every UI I review has too little breathing room. Give your elements room to breathe.

CSS tip: use `outline-offset` to create beautiful focus rings that don't overlap the element. Clean, accessible, and looks way better than the default.

The best design is the one that's invisible. You only notice it when it's gone.

Little UI tip: add a subtle inner shadow to inputs to give them a "pressed in" look. Makes the form feel more tactile and real.