emil-design-eng

Use ease-out or a strong custom cubic-bezier curve for entering elements, keep UI durations under 300ms, and specify exact transition properties instead of `transition: all`. Ease-out shows immediate movement, which makes the interface feel faster at the same duration.

Use ease-out for elements entering the screen, since ease-in delays initial movement and feels sluggish. Prefer custom curves like cubic-bezier(0.23, 1, 0.32, 1) over built-in CSS easings, and keep dropdown durations between 150-250ms.

Use CSS transitions for predetermined animations and rapidly triggered UI, since they run off the main thread and are interruptible. Use Framer Motion springs for drag gestures and interruptible physics-based motion, but use the full transform string rather than x/y shorthand for hardware acceleration.

The default `transform-origin: center` makes popovers scale from the middle instead of their trigger. Set it to the trigger location using Radix UI's `--radix-popover-content-transform-origin` variable, and start from scale(0.95) with opacity 0 rather than scale(0).

Skip animation for actions users trigger hundreds of times daily, such as keyboard shortcuts and command palettes, since animation makes them feel delayed. Also avoid animating keyboard-initiated actions entirely, and respect prefers-reduced-motion by removing movement while keeping opacity transitions.