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No.02 · Buttons

Cascade

A pill whose label turns over letter by letter, left to right, while its arrow is swapped for a fresh one arriving from the left.

The prompt

Written for the variant you picked above: Bone + ink

Build a primary pill link (52px, inset top highlight, small negative-spread shadow) with a round 'well' on the right holding an arrow. Split the label into letters; each letter is a 1em-tall reel containing the letter twice, stacked. On hover or focus every reel translates up 100% over 560ms with cubic-bezier(0.16,1,0.3,1), delayed 22ms per letter — the word turns over like a wave travelling left to right, and because both rows are identical it reads as motion, not as a change of text. At the same time the left padding opens by a quarter rem, so the pill seems to inhale. The arrow well holds two arrows in one grid cell: the first leaves to the right (translateX 200%, 40ms delay) as the second arrives from the left (from −200%, 90ms delay), so the arrow is replaced rather than nudged. Press scales to 0.97. The tone prop sets face, text and well colours. Selected variant — Bone + ink: Bone + ink: two links side by side on #0b080d — the default bone tone (bone face, ink text, ink well) "Start a project", and tone="ink" (ink face, bone text, hairline ring) "See the work".

Notes

Interaction
Hover or focus rolls the letters and swaps the arrow; press compresses the pill.
Motion
560ms expo-out per letter with a 22ms stagger; arrow exchange 560ms with 40/90ms offsets; padding 520ms.
Accessibility
A real link whose accessible name is the full label (the per-letter reels are aria-hidden). Focus-visible plays the same motion plus an outline. Reduced motion makes it instant.
Responsive
Intrinsic width; labels never wrap.
On touch
On touch the roll plays while pressed; nothing is hidden behind hover.

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301 components