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No.37 · Buttons· New

Nebula Pill Button

A dark pill with a nebula inside: soft clouds of colour under a little grain and a fine rim, turning slowly at rest and quickening and brightening on hover.

The prompt

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Written for the variant you picked above: Nebula

Build a dark call-to-action pill filled with soft clouds of colour (React + CSS, no libraries). Geometry in em: min-width 16.2em, height 4em, padding 0 2em, fully rounded, default font-size 20px. The rim is a 0.09em transparent border showing a 90° gradient (border-box) around a solid base colour (padding-box). Label "Get Started" in Poppins 500 (fallback Inter) at 1.08em in near-white with a faint dark text-shadow, then a filled white paper-plane icon 0.75em after it. Inside, a clipped paint layer holds a clouds layer (inset −12%, blur 0.85em, saturate 1.15) of six to nine elliptical blobs, each radial-gradient(closest-side, colour, colour 30%, transparent) placed by centre and size in percent of the pill; tall blobs (up to 190% of the height) read as soft vertical bands, small pale ones as highlights, dark ones as shadowed pockets. Over the clouds, an SVG fractal-noise grain at 10% in overlay blend. Motion: blobs swirl on 12–19s alternate loops (translate ±5%, rotate ±8°, scale 0.95–1.08), some in reverse; hover shortens every loop to 5s and lifts saturation and brightness; the plane hops 0.14em up-right; press scales to 0.98. Focus-visible draws a near-white outline. Reduced motion stops the swirl. Props: palette {base, rim[], blobs[]}, size, icon (or false), plus native button props. Selected variant — Nebula (nebula): Base #1c1e52 and a near-white rim (#efeaf8 to #f4f0fb). Clouds: teal #4fd8d8 top-left, sky #5aa6ef beside it, a gold #e9d77a spark near 36% top, pale lilac low at 39%, blue #3f69ea upper-right of centre, violet #5d3ff0 low in the middle, a deep #151335 pocket bottom-right, a white #f3eefc highlight at the top near 79%, and a dark pocket bottom-left. This selection takes precedence over references to other themes or options in the general brief. Implement this selected appearance; do not add a variant picker or alternative appearances unless requested. Implementation requirements: Use React and TypeScript. Keep the component self-contained, with uniquely scoped CSS and no animation libraries. Include required imports, styles and font setup in the result. Interaction: Hover quickens the clouds and brightens them, and lifts the paper plane; press scales the pill down slightly. Works as a native button. Motion: Clouds swirl on 12–19s alternate loops at rest and 5s on hover; colour lift eases over 0.5s; the plane hops with a 0.45s overshoot. Accessibility: A native button with its visible label as the name; paint, grain and icon are aria-hidden. The label carries a soft shadow so it stays readable over the brightest clouds. Visible focus outline. Reduced motion stops the swirl. Responsive behavior: Sized in em from one font-size; at 20px it is 324px wide and fits a 360px phone. Touch: No hover on touch; the clouds keep turning slowly and press feedback still shows. Preserve keyboard access, visible focus and reduced-motion behavior. Keep fictional demo data and simulated service calls in a separate usage example; expose callbacks for real actions and recover from rejected requests. Keep usage-example links inside the demo: use local buttons or prevent navigation. Demonstration links must not navigate to Vitrine routes or open other pages; preserve real URL support in the reusable component itself. Verify the result at narrow and wide viewport sizes, with keyboard input and reduced motion enabled.

Notes

Interaction
Hover quickens the clouds and brightens them, and lifts the paper plane; press scales the pill down slightly. Works as a native button.
Motion
Clouds swirl on 12–19s alternate loops at rest and 5s on hover; colour lift eases over 0.5s; the plane hops with a 0.45s overshoot.
Accessibility
A native button with its visible label as the name; paint, grain and icon are aria-hidden. The label carries a soft shadow so it stays readable over the brightest clouds. Visible focus outline. Reduced motion stops the swirl.
Responsive
Sized in em from one font-size; at 20px it is 324px wide and fits a 360px phone.
On touch
No hover on touch; the clouds keep turning slowly and press feedback still shows.

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