# Sparkle hover button

> Small sparks shoot out from the center in every direction while the cursor rests on the button.

- Category: [Buttons](https://library.aimran.es/components/buttons)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/uv-btn-sparks
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham

## Where to use it

Sparks around a button suggest something a bit magical is about to happen. That makes them a good match for “Generate” in an AI writing tool, “Open your gift” on a digital gift card or “Surprise me” on a recipe site. The button grows slightly and eight dots burst outwards in a circle, again and again.

The sparks fly beyond the edges, so leave some room around the button and keep it out of tight toolbars. The secondary color paints the sparks: a warm yellow or pink on a blue button reads as celebration, while the same blue looks more subtle.

## Code

### HTML

```html
<button class="uv-sparks"><i style="--i:0"></i><i style="--i:1"></i><i style="--i:2"></i><i style="--i:3"></i><i style="--i:4"></i><i style="--i:5"></i><i style="--i:6"></i><i style="--i:7"></i>Magic</button>
```

### CSS

```css
.uv-sparks {
  --c1: #0071e3;
  --c2: #8ec5ff;
  --s: 16px;
  /* tamaño */
  --k: 1;
  /* velocidad */
  --fg: #1d1d1f;
  /* texto */
  --bg: #f5f5f7;
  /* fondo */
}

.uv-sparks {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 600;
  line-height: 1;
  padding: 1em 2em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  color: #fff;
  background: var(--c1);
  transition: transform .3s cubic-bezier(.25,.1,.25,1);
}

.uv-sparks i {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c2);
  opacity: 0;
  pointer-events: none;
}

.uv-sparks:hover {
  transform: scale(1.04);
}

.uv-sparks:hover i {
  animation: uv-spk calc(1s / var(--k)) cubic-bezier(.25,.1,.25,1) infinite;
  animation-delay: calc(var(--i) * .12s / var(--k));
}

@keyframes uv-spk {
  0% {
    opacity: 1;
    transform: rotate(calc(var(--i) * 45deg)) translateY(0) scale(1);
  }
  100% {
    opacity: 0;
    transform: rotate(calc(var(--i) * 45deg)) translateY(-3.5em) scale(.2);
  }
}
```

### React

```tsx
import type { CSSProperties } from "react";

const css = `
.uv-sparks {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 600;
  line-height: 1;
  padding: 1em 2em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  color: #fff;
  background: var(--c1);
  transition: transform .3s cubic-bezier(.25,.1,.25,1);
}

.uv-sparks i {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c2);
  opacity: 0;
  pointer-events: none;
}

.uv-sparks:hover {
  transform: scale(1.04);
}

.uv-sparks:hover i {
  animation: uv-spk calc(1s / var(--k)) cubic-bezier(.25,.1,.25,1) infinite;
  animation-delay: calc(var(--i) * .12s / var(--k));
}

@keyframes uv-spk {
  0% {
    opacity: 1;
    transform: rotate(calc(var(--i) * 45deg)) translateY(0) scale(1);
  }
  100% {
    opacity: 0;
    transform: rotate(calc(var(--i) * 45deg)) translateY(-3.5em) scale(.2);
  }
}
`;

export default function BtnSparks() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <button className="uv-sparks"><i style={{ "--i": "0" } as CSSProperties}></i><i style={{ "--i": "1" } as CSSProperties}></i><i style={{ "--i": "2" } as CSSProperties}></i><i style={{ "--i": "3" } as CSSProperties}></i><i style={{ "--i": "4" } as CSSProperties}></i><i style={{ "--i": "5" } as CSSProperties}></i><i style={{ "--i": "6" } as CSSProperties}></i><i style={{ "--i": "7" } as CSSProperties}></i>Magic</button>
      </div>
    </>
  );
}
```

## Prompt for AI assistants

Paste this into ChatGPT, Claude, Cursor, v0 or Lovable to adapt the block to your stack (Tailwind, Vue, Svelte…):

````text
I want to add the “Sparkle hover button” block (Buttons) from AIMRAN Library to my project.

## What it is
Small sparks shoot out from the center in every direction while the cursor rests on the button.

## Chosen settings
- Main color: #0071e3
- Secondary color: #8ec5ff
- Size: 16px (from 12 to 24px)
- Speed: 1x (from 0.5 to 2x)
- Text: "Magic"

## What I need
1. Add it to my project with the same look and animation as the reference code: same sizes, colours, radii, shadows, timings and easing.
2. It is built with plain HTML and CSS (the reference wraps it in a React component with its CSS). If my project uses something else (Vue, Svelte, Astro, plain HTML…), translate it without losing any behaviour. If I use Tailwind, turn the styles into classes; if not, keep the CSS in its own file.
3. Expose the settings above as props (or CSS variables) with those values as defaults.
4. Make it work well on phones: nothing that depends only on hover, touch targets of at least 44 px and no overflow on 320 px screens.
5. Make it look right in light and dark mode.
6. Keep it accessible: semantic HTML, roles and aria-* where needed, visible focus and keyboard support.
7. Respect prefers-reduced-motion: with reduced motion, no big animations but the same end result.

## Reference code
```tsx
import type { CSSProperties } from "react";

const css = `
.uv-sparks {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 600;
  line-height: 1;
  padding: 1em 2em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  color: #fff;
  background: var(--c1);
  transition: transform .3s cubic-bezier(.25,.1,.25,1);
}

.uv-sparks i {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c2);
  opacity: 0;
  pointer-events: none;
}

.uv-sparks:hover {
  transform: scale(1.04);
}

.uv-sparks:hover i {
  animation: uv-spk calc(1s / var(--k)) cubic-bezier(.25,.1,.25,1) infinite;
  animation-delay: calc(var(--i) * .12s / var(--k));
}

@keyframes uv-spk {
  0% {
    opacity: 1;
    transform: rotate(calc(var(--i) * 45deg)) translateY(0) scale(1);
  }
  100% {
    opacity: 0;
    transform: rotate(calc(var(--i) * 45deg)) translateY(-3.5em) scale(.2);
  }
}
`;

export default function BtnSparks() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <button className="uv-sparks"><i style={{ "--i": "0" } as CSSProperties}></i><i style={{ "--i": "1" } as CSSProperties}></i><i style={{ "--i": "2" } as CSSProperties}></i><i style={{ "--i": "3" } as CSSProperties}></i><i style={{ "--i": "4" } as CSSProperties}></i><i style={{ "--i": "5" } as CSSProperties}></i><i style={{ "--i": "6" } as CSSProperties}></i><i style={{ "--i": "7" } as CSSProperties}></i>Magic</button>
      </div>
    </>
  );
}
```

Give me the complete final code, ready to paste, and tell me in one line where to put it in my project.
````