Premium digital products feel different before you can consciously articulate why. Usually, it is micro-interactions — the small, functional animations that communicate system state and reward user input.
Hover states
Every interactive element should have a distinct hover state that communicates "this is clickable." The best hover states change at least two properties simultaneously: colour and position (translateY(-2px)), or colour and scale (scale(1.02)). Single-property hovers feel dated.
Loading feedback
Show feedback within 100ms of a user action. If an operation takes more than 300ms, show a loading indicator. If it takes more than 3 seconds, show a progress indicator with an estimate. Never leave users wondering if their action registered.
Form validation
Validate fields onBlur, not onSubmit. Show success states (green checkmark) immediately when a field is valid. Show error states only after the user has left a field and it is invalid — never on first focus. Inline error messages should be specific: "Email must include @" beats "Invalid email".
