# Pop-open search

> A round magnifier button that stretches into a full search field when you click it.

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

## Where to use it

When the header is already crowded, a search that starts as an icon is a relief: the top bar of a blog, the menu of a small online shop or a recipe site on mobile. Click the magnifier and it opens, cursor ready; click again and it closes. An expanding search bar in HTML, CSS and a pinch of JavaScript.

Hidden search is fine when search is a side feature. If people come to your site mainly to look things up, like a shop with thousands of products, keep the full field visible from the start.

## Code

### HTML

```html
<div class="uv-in2e"><input placeholder="Search…"><button class="bt"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round"><circle cx="11" cy="11" r="7"/><path d="M20 20l-4.3-4.3"/></svg></button></div>
```

### CSS

```css
.uv-in2e {
  --c1: #0071e3;
  --c2: #8ec5ff;
  --s: 16px;
  /* tamaño */
  --k: 1;
  /* velocidad */
  --fg: #1d1d1f;
  /* texto */
  --bg: #f5f5f7;
  /* fondo */
}

.uv-in2e {
  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: flex;
  align-items: center;
  justify-content: flex-end;
  height: 3em;
  width: 3em;
  border-radius: 999px;
  background: var(--bg);
  box-shadow: inset 0 0 0 1.6px color-mix(in srgb,var(--fg) 12%,transparent);
  transition: width calc(0.48s / var(--k)) cubic-bezier(.34,1.56,.64,1),box-shadow calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2e.open {
  width: 16em;
  box-shadow: inset 0 0 0 1.8px var(--c1),0 0 0 4px color-mix(in srgb,var(--c1) 14%,transparent);
}

.uv-in2e input {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  position: absolute;
  left: 1.2em;
  right: 3em;
  width: auto;
  font-size: calc(var(--s) * .95);
  color: var(--fg);
  background: none;
  border: 0;
  outline: 0;
  opacity: 0;
  transition: opacity calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2e.open input {
  opacity: 1;
}

.uv-in2e .bt {
  display: grid;
  place-items: center;
  width: 3em;
  height: 3em;
  border: 0;
  border-radius: 50%;
  background: none;
  color: var(--fg);
  cursor: pointer;
  transition: color calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.4s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-in2e .bt svg {
  width: 1.2em;
  height: 1.2em;
}

.uv-in2e.open .bt {
  color: var(--c1);
  transform: rotate(90deg) scale(.92);
}
```

### JavaScript

```js
document.querySelectorAll(".uv-in2e").forEach(el => {
  const b=el.querySelector(".bt"),i=el.querySelector("input");b.addEventListener("click",()=>{el.classList.toggle("open");if(el.classList.contains("open"))setTimeout(()=>i.focus(),160);else i.value=""})
});
```

### React

```tsx
// @ts-nocheck: setup() es JavaScript del DOM sin tipos, el mismo de la pestaña JS.
import { useEffect, useRef, type CSSProperties } from "react";

const css = `
.uv-in2e {
  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: flex;
  align-items: center;
  justify-content: flex-end;
  height: 3em;
  width: 3em;
  border-radius: 999px;
  background: var(--bg);
  box-shadow: inset 0 0 0 1.6px color-mix(in srgb,var(--fg) 12%,transparent);
  transition: width calc(0.48s / var(--k)) cubic-bezier(.34,1.56,.64,1),box-shadow calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2e.open {
  width: 16em;
  box-shadow: inset 0 0 0 1.8px var(--c1),0 0 0 4px color-mix(in srgb,var(--c1) 14%,transparent);
}

.uv-in2e input {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  position: absolute;
  left: 1.2em;
  right: 3em;
  width: auto;
  font-size: calc(var(--s) * .95);
  color: var(--fg);
  background: none;
  border: 0;
  outline: 0;
  opacity: 0;
  transition: opacity calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2e.open input {
  opacity: 1;
}

.uv-in2e .bt {
  display: grid;
  place-items: center;
  width: 3em;
  height: 3em;
  border: 0;
  border-radius: 50%;
  background: none;
  color: var(--fg);
  cursor: pointer;
  transition: color calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.4s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-in2e .bt svg {
  width: 1.2em;
  height: 1.2em;
}

.uv-in2e.open .bt {
  color: var(--c1);
  transform: rotate(90deg) scale(.92);
}
`;

// Interacción en JavaScript del DOM: la misma que en la pestaña JS.
// eslint-disable-next-line @typescript-eslint/no-explicit-any
function setup(el: any) {
  const b=el.querySelector(".bt"),i=el.querySelector("input");b.addEventListener("click",()=>{el.classList.toggle("open");if(el.classList.contains("open"))setTimeout(()=>i.focus(),160);else i.value=""})
}

export default function In2Expand() {
  const ref = useRef<HTMLDivElement>(null);

  useEffect(() => {
    const el = ref.current?.firstElementChild;
    return el ? setup(el) : undefined;
  }, []);

  return (
    <>
      <style>{css}</style>
      <div
        ref={ref} style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <div className="uv-in2e"><input placeholder="Search…" /><button className="bt"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.2" strokeLinecap="round"><circle cx="11" cy="11" r="7" /><path d="M20 20l-4.3-4.3" /></svg></button></div>
      </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 “Pop-open search” block (Inputs) from AIMRAN Library to my project.

## What it is
A round magnifier button that stretches into a full search field when you click it.

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

## 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
// @ts-nocheck: setup() es JavaScript del DOM sin tipos, el mismo de la pestaña JS.
import { useEffect, useRef, type CSSProperties } from "react";

const css = `
.uv-in2e {
  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: flex;
  align-items: center;
  justify-content: flex-end;
  height: 3em;
  width: 3em;
  border-radius: 999px;
  background: var(--bg);
  box-shadow: inset 0 0 0 1.6px color-mix(in srgb,var(--fg) 12%,transparent);
  transition: width calc(0.48s / var(--k)) cubic-bezier(.34,1.56,.64,1),box-shadow calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2e.open {
  width: 16em;
  box-shadow: inset 0 0 0 1.8px var(--c1),0 0 0 4px color-mix(in srgb,var(--c1) 14%,transparent);
}

.uv-in2e input {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  position: absolute;
  left: 1.2em;
  right: 3em;
  width: auto;
  font-size: calc(var(--s) * .95);
  color: var(--fg);
  background: none;
  border: 0;
  outline: 0;
  opacity: 0;
  transition: opacity calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2e.open input {
  opacity: 1;
}

.uv-in2e .bt {
  display: grid;
  place-items: center;
  width: 3em;
  height: 3em;
  border: 0;
  border-radius: 50%;
  background: none;
  color: var(--fg);
  cursor: pointer;
  transition: color calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.4s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-in2e .bt svg {
  width: 1.2em;
  height: 1.2em;
}

.uv-in2e.open .bt {
  color: var(--c1);
  transform: rotate(90deg) scale(.92);
}
`;

// Interacción en JavaScript del DOM: la misma que en la pestaña JS.
// eslint-disable-next-line @typescript-eslint/no-explicit-any
function setup(el: any) {
  const b=el.querySelector(".bt"),i=el.querySelector("input");b.addEventListener("click",()=>{el.classList.toggle("open");if(el.classList.contains("open"))setTimeout(()=>i.focus(),160);else i.value=""})
}

export default function In2Expand() {
  const ref = useRef<HTMLDivElement>(null);

  useEffect(() => {
    const el = ref.current?.firstElementChild;
    return el ? setup(el) : undefined;
  }, []);

  return (
    <>
      <style>{css}</style>
      <div
        ref={ref} style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <div className="uv-in2e"><input placeholder="Search…" /><button className="bt"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.2" strokeLinecap="round"><circle cx="11" cy="11" r="7" /><path d="M20 20l-4.3-4.3" /></svg></button></div>
      </div>
    </>
  );
}
```

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