# Spinning gradient field

> While the field is active, a two-colour gradient border slowly spins around it.

- Category: [Inputs](https://library.aimran.es/components/inputs)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/uv-in2-gradient
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham

## Where to use it

A spinning gradient border draws the eye to one important field: the prompt box of an AI tool, the project search in a dashboard or the “Enter your domain” field on a hosting landing page. When you click away, the border goes quiet again. An input with an animated gradient border, in CSS only.

Use it for a single hero field per page. If every input spins, the form looks like a slot machine. Two colours from your brand palette are enough; a rainbow gradient gets noisy fast.

## Code

### HTML

```html
<label class="uv-in2g"><input placeholder="Search projects"></label>
```

### CSS

```css
.uv-in2g {
  --c1: #0071e3;
  --c2: #8ec5ff;
  --s: 16px;
  /* tamaño */
  --k: 1;
  /* velocidad */
  --fg: #1d1d1f;
  /* texto */
  --bg: #f5f5f7;
  /* fondo */
}

.uv-in2g {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  color: var(--fg);
  -webkit-tap-highlight-color: transparent;
  position: relative;
  display: block;
  width: 16em;
  padding: 2px;
  border-radius: .95em;
  background: color-mix(in srgb,var(--fg) 10%,transparent);
  transition: background calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2g::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: .95em;
  background: conic-gradient(from 0deg,var(--c1),var(--c2),var(--c1));
  opacity: 0;
  transition: opacity calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
  animation: uv-in2g calc(3s / var(--k)) linear infinite;
}

.uv-in2g input {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  position: relative;
  width: 100%;
  box-sizing: border-box;
  padding: .85em 1em;
  font-size: var(--s);
  color: var(--fg);
  background: var(--bg);
  border: 0;
  outline: 0;
  border-radius: .8em;
}

.uv-in2g input::placeholder {
  color: color-mix(in srgb,var(--fg) 42%,transparent);
}

.uv-in2g:focus-within::before {
  opacity: 1;
}

@keyframes uv-in2g {
  to {
    transform: rotate(1turn);
  }
}
```

### React

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

const css = `
.uv-in2g {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  color: var(--fg);
  -webkit-tap-highlight-color: transparent;
  position: relative;
  display: block;
  width: 16em;
  padding: 2px;
  border-radius: .95em;
  background: color-mix(in srgb,var(--fg) 10%,transparent);
  transition: background calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2g::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: .95em;
  background: conic-gradient(from 0deg,var(--c1),var(--c2),var(--c1));
  opacity: 0;
  transition: opacity calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
  animation: uv-in2g calc(3s / var(--k)) linear infinite;
}

.uv-in2g input {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  position: relative;
  width: 100%;
  box-sizing: border-box;
  padding: .85em 1em;
  font-size: var(--s);
  color: var(--fg);
  background: var(--bg);
  border: 0;
  outline: 0;
  border-radius: .8em;
}

.uv-in2g input::placeholder {
  color: color-mix(in srgb,var(--fg) 42%,transparent);
}

.uv-in2g:focus-within::before {
  opacity: 1;
}

@keyframes uv-in2g {
  to {
    transform: rotate(1turn);
  }
}
`;

export default function In2Gradient() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-in2g"><input placeholder="Search projects" /></label>
      </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 “Spinning gradient field” block (Inputs) from AIMRAN Library to my project.

## What it is
While the field is active, a two-colour gradient border slowly spins around it.

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

## 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-in2g {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  color: var(--fg);
  -webkit-tap-highlight-color: transparent;
  position: relative;
  display: block;
  width: 16em;
  padding: 2px;
  border-radius: .95em;
  background: color-mix(in srgb,var(--fg) 10%,transparent);
  transition: background calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2g::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: .95em;
  background: conic-gradient(from 0deg,var(--c1),var(--c2),var(--c1));
  opacity: 0;
  transition: opacity calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
  animation: uv-in2g calc(3s / var(--k)) linear infinite;
}

.uv-in2g input {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  position: relative;
  width: 100%;
  box-sizing: border-box;
  padding: .85em 1em;
  font-size: var(--s);
  color: var(--fg);
  background: var(--bg);
  border: 0;
  outline: 0;
  border-radius: .8em;
}

.uv-in2g input::placeholder {
  color: color-mix(in srgb,var(--fg) 42%,transparent);
}

.uv-in2g:focus-within::before {
  opacity: 1;
}

@keyframes uv-in2g {
  to {
    transform: rotate(1turn);
  }
}
`;

export default function In2Gradient() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-in2g"><input placeholder="Search projects" /></label>
      </div>
    </>
  );
}
```

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