# Shine sweep button

> A streak of light crosses the button diagonally on hover, while the button lifts a couple of pixels.

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

## Where to use it

This shine button suits the main call to action of a software landing page: “Start free trial”, “Get started” or “Create account”. The light passes once when the cursor arrives, like a reflection on a shop window, and the button lifts. If you were looking for a CSS button hover effect with a shine, this is the classic one.

It looks best on a deep, saturated color. On pastel tones the white streak almost disappears. Use it on one button per screen: when every button shines, none of them stands out and the page starts to feel like a slot machine.

## Code

### HTML

```html
<button class="uv-shine">Get started</button>
```

### CSS

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

.uv-shine {
  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;
  overflow: hidden;
  color: #fff;
  background: var(--c1);
  box-shadow: 0 8px 24px -10px var(--c1);
  transition: transform .3s cubic-bezier(.25,.1,.25,1);
}

.uv-shine::after {
  content: "";
  position: absolute;
  inset: -50% auto -50% -60%;
  width: 40%;
  background: linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);
  transform: skewX(-25deg);
  transition: left calc(0.7s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-shine:hover::after {
  left: 130%;
}

.uv-shine:hover {
  transform: translateY(-2px);
}

.uv-shine:active {
  transform: scale(.97);
}
```

### React

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

const css = `
.uv-shine {
  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;
  overflow: hidden;
  color: #fff;
  background: var(--c1);
  box-shadow: 0 8px 24px -10px var(--c1);
  transition: transform .3s cubic-bezier(.25,.1,.25,1);
}

.uv-shine::after {
  content: "";
  position: absolute;
  inset: -50% auto -50% -60%;
  width: 40%;
  background: linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);
  transform: skewX(-25deg);
  transition: left calc(0.7s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-shine:hover::after {
  left: 130%;
}

.uv-shine:hover {
  transform: translateY(-2px);
}

.uv-shine:active {
  transform: scale(.97);
}
`;

export default function BtnShine() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <button className="uv-shine">Get started</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 “Shine sweep button” block (Buttons) from AIMRAN Library to my project.

## What it is
A streak of light crosses the button diagonally on hover, while the button lifts a couple of pixels.

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

## 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-shine {
  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;
  overflow: hidden;
  color: #fff;
  background: var(--c1);
  box-shadow: 0 8px 24px -10px var(--c1);
  transition: transform .3s cubic-bezier(.25,.1,.25,1);
}

.uv-shine::after {
  content: "";
  position: absolute;
  inset: -50% auto -50% -60%;
  width: 40%;
  background: linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);
  transform: skewX(-25deg);
  transition: left calc(0.7s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-shine:hover::after {
  left: 130%;
}

.uv-shine:hover {
  transform: translateY(-2px);
}

.uv-shine:active {
  transform: scale(.97);
}
`;

export default function BtnShine() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <button className="uv-shine">Get started</button>
      </div>
    </>
  );
}
```

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