Prompt pattern
Show that something is clickable on hover
Buttons and links change on hover so the visitor knows what responds.
Fills the motion part of a prompt.
When the cursor is over a button, link, or card, change it visibly within 150ms. Darken the background or shift the border, and change the cursor to a pointer. Keep the element the same size so the layout does not move. Give keyboard focus the same visible treatment.
Use this motion pattern when it changes the result the agent should produce. It provides one concrete direction without deciding unrelated parts of the website.