Foundations
Motion
Transitions are limited to 120-150ms background-color fades. Everything else is immediate. No springs, no bounces.
Interactive states
Hover any button to see the transition in action.
Rules
120ms ease-out — hover and press default.
150ms ease-out — popover open, toast enter.
Never animate
color or opacity on icons — visible jitter.No springs, no bounces, no overshoot. Ease-out or linear, nothing else.