A split control that pairs a Glide-style select with an action button and a cover-success animation.
Dropdown Button Selector joins a compact select to a flush action button inside one rounded shell. Choose a value, run an action, and the white (or ink) button surface expands over the select, shows a success label, then retracts to the button edge before the idle chrome returns at full opacity. Use it for copy-prompt, export, apply and upgrade patterns where the selection and the action belong together. Reduced motion shortens the cover phases.