# Magnetic navbar with springy dot

> Links lean towards the cursor like magnets while a dot with spring physics follows them, stretching with its speed.

- Category: [Navigation](https://library.aimran.es/components/navigation)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/uv-nav-magnet-links
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham

## Where to use it

A navigation bar with a sense of physics: each link is pulled a little towards the cursor as if magnetic, and a small gradient dot under the bar follows the hovered or focused link with a real spring simulation, stretching when it moves fast and settling with a wobble. Clicking a link makes it the new resting place. It suits studios, portfolios and personal sites.

The main and secondary colors make the gradient of the dot. Keep the links to five or six words at most, and the magnet effect is skipped on touch screens and with reduced motion.

## Code

### HTML

```html
<nav class="uvq12-ml" aria-label="Navigation"><ul><li><a href="#" aria-current="page">Work</a></li><li><a href="#">Studio</a></li><li><a href="#">Blog</a></li><li><a href="#">Shop</a></li><li><a href="#">Contact</a></li></ul><span class="dt" aria-hidden="true"></span></nav>
```

### CSS

```css
.uvq12-ml {
  --c1: #e11d48;
  --c2: #fb923c;
  --s: 16px;
  /* tamaño */
  --k: 1;
  /* velocidad */
  --fg: #1d1d1f;
  /* texto */
  --bg: #f5f5f7;
  /* fondo */
}

.uvq12-ml {
  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;
  width: max-content;
  padding: .4em .5em .9em;
  border-radius: 1.2em;
  background: color-mix(in srgb,var(--fg) 2%,var(--bg));
  box-shadow: 0 0 0 1px color-mix(in srgb,var(--fg) 9%,transparent),0 1.4em 2.8em -1.4em rgba(0,0,0,.45);
}

.uvq12-ml ul {
  display: flex;
  gap: .15em;
  margin: 0;
  padding: 0;
  list-style: none;
}

.uvq12-ml a {
  display: block;
  padding: .6em .75em;
  border-radius: .8em;
  font-size: .9em;
  font-weight: 650;
  color: color-mix(in srgb,var(--fg) 55%,transparent);
  text-decoration: none;
  transition: transform calc(0.5s / var(--k)) cubic-bezier(.34,1.56,.64,1),color calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1),background calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uvq12-ml a.mg {
  transition: transform calc(0.12s / var(--k)) linear,color calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1),background calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uvq12-ml a:hover {
  color: var(--fg);
  background: color-mix(in srgb,var(--fg) 6%,transparent);
}

.uvq12-ml a:active {
  background: color-mix(in srgb,var(--c1) 12%,transparent);
}

.uvq12-ml a[aria-current] {
  color: var(--fg);
}

.uvq12-ml a:focus-visible {
  outline: 2px solid var(--c1);
  outline-offset: 1px;
}

.uvq12-ml .dt {
  position: absolute;
  left: 0;
  bottom: .45em;
  opacity: 0;
  transition: opacity calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
  width: .45em;
  height: .45em;
  margin-left: -.225em;
  border-radius: 1em;
  background: linear-gradient(90deg,var(--c2),var(--c1));
  box-shadow: 0 0 .6em color-mix(in srgb,var(--c1) 60%,transparent);
  will-change: transform;
}

@media (prefers-reduced-motion:reduce) {
  .uvq12-ml,.uvq12-ml *,.uvq12-ml *::before,.uvq12-ml *::after {
    animation-duration: .01ms!important;
    animation-iteration-count: 1!important;
    transition-duration: .01ms!important;
  }
}
```

### JavaScript

```js
document.querySelectorAll(".uvq12-ml").forEach(el => {
  const ul=el.querySelector("ul"),ls=[...el.querySelectorAll("a")],dt=el.querySelector(".dt");let cur=ls[0],tg=null,x=0,v=0,raf=0,last=0;
const rm=matchMedia("(prefers-reduced-motion: reduce)").matches;const cx=a=>a.parentElement.offsetLeft+a.parentElement.offsetWidth/2;
const loop=t=>{const dt0=Math.min(32,t-(last||t))/16.7;last=t;const g=cx(tg||cur);v+=(g-x)*.14*dt0;v*=Math.pow(.74,dt0);x+=v*dt0;const s=1+Math.min(Math.abs(v)/6,2.2);dt.style.transform="translateX("+x.toFixed(2)+"px) scaleX("+s.toFixed(3)+")";if(Math.abs(g-x)<.2&&Math.abs(v)<.05){x=g;dt.style.transform="translateX("+x+"px)";raf=0;last=0;return}raf=requestAnimationFrame(loop)};
const kick=()=>{if(rm){x=cx(tg||cur);dt.style.transform="translateX("+x+"px)";return}if(!raf)raf=requestAnimationFrame(loop)};
ls.forEach(a=>{a.addEventListener("pointerenter",()=>{tg=a;kick()});a.addEventListener("pointermove",e=>{if(rm||e.pointerType!=="mouse")return;const r=a.getBoundingClientRect();a.classList.add("mg");a.style.transform="translate("+((e.clientX-r.left-r.width/2)*.3).toFixed(1)+"px,"+((e.clientY-r.top-r.height/2)*.35).toFixed(1)+"px)"});a.addEventListener("pointerleave",()=>{a.classList.remove("mg");a.style.transform="";tg=null;kick()});
a.addEventListener("focus",()=>{tg=a;kick()});a.addEventListener("blur",()=>{tg=null;kick()});
a.addEventListener("click",e=>{e.preventDefault();cur=a;ls.forEach(o=>{if(o===a)o.setAttribute("aria-current","page");else o.removeAttribute("aria-current")});kick()});
a.addEventListener("keydown",e=>{const i=ls.indexOf(a),n=e.key==="ArrowRight"?i+1:e.key==="ArrowLeft"?i-1:-1;if(n>=0&&n<ls.length){e.preventDefault();ls[n].focus()}})});
x=cx(cur);dt.style.transform="translateX("+x+"px)";dt.style.opacity="1";const ro=new ResizeObserver(()=>{x=cx(tg||cur);kick()});ro.observe(ul);return()=>{cancelAnimationFrame(raf);ro.disconnect()}
});
```

### 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 = `
.uvq12-ml {
  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;
  width: max-content;
  padding: .4em .5em .9em;
  border-radius: 1.2em;
  background: color-mix(in srgb,var(--fg) 2%,var(--bg));
  box-shadow: 0 0 0 1px color-mix(in srgb,var(--fg) 9%,transparent),0 1.4em 2.8em -1.4em rgba(0,0,0,.45);
}

.uvq12-ml ul {
  display: flex;
  gap: .15em;
  margin: 0;
  padding: 0;
  list-style: none;
}

.uvq12-ml a {
  display: block;
  padding: .6em .75em;
  border-radius: .8em;
  font-size: .9em;
  font-weight: 650;
  color: color-mix(in srgb,var(--fg) 55%,transparent);
  text-decoration: none;
  transition: transform calc(0.5s / var(--k)) cubic-bezier(.34,1.56,.64,1),color calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1),background calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uvq12-ml a.mg {
  transition: transform calc(0.12s / var(--k)) linear,color calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1),background calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uvq12-ml a:hover {
  color: var(--fg);
  background: color-mix(in srgb,var(--fg) 6%,transparent);
}

.uvq12-ml a:active {
  background: color-mix(in srgb,var(--c1) 12%,transparent);
}

.uvq12-ml a[aria-current] {
  color: var(--fg);
}

.uvq12-ml a:focus-visible {
  outline: 2px solid var(--c1);
  outline-offset: 1px;
}

.uvq12-ml .dt {
  position: absolute;
  left: 0;
  bottom: .45em;
  opacity: 0;
  transition: opacity calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
  width: .45em;
  height: .45em;
  margin-left: -.225em;
  border-radius: 1em;
  background: linear-gradient(90deg,var(--c2),var(--c1));
  box-shadow: 0 0 .6em color-mix(in srgb,var(--c1) 60%,transparent);
  will-change: transform;
}

@media (prefers-reduced-motion:reduce) {
  .uvq12-ml,.uvq12-ml *,.uvq12-ml *::before,.uvq12-ml *::after {
    animation-duration: .01ms!important;
    animation-iteration-count: 1!important;
    transition-duration: .01ms!important;
  }
}
`;

// 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 ul=el.querySelector("ul"),ls=[...el.querySelectorAll("a")],dt=el.querySelector(".dt");let cur=ls[0],tg=null,x=0,v=0,raf=0,last=0;
const rm=matchMedia("(prefers-reduced-motion: reduce)").matches;const cx=a=>a.parentElement.offsetLeft+a.parentElement.offsetWidth/2;
const loop=t=>{const dt0=Math.min(32,t-(last||t))/16.7;last=t;const g=cx(tg||cur);v+=(g-x)*.14*dt0;v*=Math.pow(.74,dt0);x+=v*dt0;const s=1+Math.min(Math.abs(v)/6,2.2);dt.style.transform="translateX("+x.toFixed(2)+"px) scaleX("+s.toFixed(3)+")";if(Math.abs(g-x)<.2&&Math.abs(v)<.05){x=g;dt.style.transform="translateX("+x+"px)";raf=0;last=0;return}raf=requestAnimationFrame(loop)};
const kick=()=>{if(rm){x=cx(tg||cur);dt.style.transform="translateX("+x+"px)";return}if(!raf)raf=requestAnimationFrame(loop)};
ls.forEach(a=>{a.addEventListener("pointerenter",()=>{tg=a;kick()});a.addEventListener("pointermove",e=>{if(rm||e.pointerType!=="mouse")return;const r=a.getBoundingClientRect();a.classList.add("mg");a.style.transform="translate("+((e.clientX-r.left-r.width/2)*.3).toFixed(1)+"px,"+((e.clientY-r.top-r.height/2)*.35).toFixed(1)+"px)"});a.addEventListener("pointerleave",()=>{a.classList.remove("mg");a.style.transform="";tg=null;kick()});
a.addEventListener("focus",()=>{tg=a;kick()});a.addEventListener("blur",()=>{tg=null;kick()});
a.addEventListener("click",e=>{e.preventDefault();cur=a;ls.forEach(o=>{if(o===a)o.setAttribute("aria-current","page");else o.removeAttribute("aria-current")});kick()});
a.addEventListener("keydown",e=>{const i=ls.indexOf(a),n=e.key==="ArrowRight"?i+1:e.key==="ArrowLeft"?i-1:-1;if(n>=0&&n<ls.length){e.preventDefault();ls[n].focus()}})});
x=cx(cur);dt.style.transform="translateX("+x+"px)";dt.style.opacity="1";const ro=new ResizeObserver(()=>{x=cx(tg||cur);kick()});ro.observe(ul);return()=>{cancelAnimationFrame(raf);ro.disconnect()}
}

export default function NavMagnetLinks() {
  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": "#e11d48",
          "--c2": "#fb923c",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <nav className="uvq12-ml" aria-label="Navigation"><ul><li><a href="#" aria-current="page">Work</a></li><li><a href="#">Studio</a></li><li><a href="#">Blog</a></li><li><a href="#">Shop</a></li><li><a href="#">Contact</a></li></ul><span className="dt" aria-hidden="true"></span></nav>
      </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 “Magnetic navbar with springy dot” block (Navigation) from AIMRAN Library to my project.

## What it is
Links lean towards the cursor like magnets while a dot with spring physics follows them, stretching with its speed.

## Chosen settings
- Main color: #e11d48
- Secondary color: #fb923c
- Size: 16px (from 12 to 24px)
- Speed: 1x (from 0.5 to 2x)
- Text: "Navegación"

## 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 = `
.uvq12-ml {
  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;
  width: max-content;
  padding: .4em .5em .9em;
  border-radius: 1.2em;
  background: color-mix(in srgb,var(--fg) 2%,var(--bg));
  box-shadow: 0 0 0 1px color-mix(in srgb,var(--fg) 9%,transparent),0 1.4em 2.8em -1.4em rgba(0,0,0,.45);
}

.uvq12-ml ul {
  display: flex;
  gap: .15em;
  margin: 0;
  padding: 0;
  list-style: none;
}

.uvq12-ml a {
  display: block;
  padding: .6em .75em;
  border-radius: .8em;
  font-size: .9em;
  font-weight: 650;
  color: color-mix(in srgb,var(--fg) 55%,transparent);
  text-decoration: none;
  transition: transform calc(0.5s / var(--k)) cubic-bezier(.34,1.56,.64,1),color calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1),background calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uvq12-ml a.mg {
  transition: transform calc(0.12s / var(--k)) linear,color calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1),background calc(0.2s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uvq12-ml a:hover {
  color: var(--fg);
  background: color-mix(in srgb,var(--fg) 6%,transparent);
}

.uvq12-ml a:active {
  background: color-mix(in srgb,var(--c1) 12%,transparent);
}

.uvq12-ml a[aria-current] {
  color: var(--fg);
}

.uvq12-ml a:focus-visible {
  outline: 2px solid var(--c1);
  outline-offset: 1px;
}

.uvq12-ml .dt {
  position: absolute;
  left: 0;
  bottom: .45em;
  opacity: 0;
  transition: opacity calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
  width: .45em;
  height: .45em;
  margin-left: -.225em;
  border-radius: 1em;
  background: linear-gradient(90deg,var(--c2),var(--c1));
  box-shadow: 0 0 .6em color-mix(in srgb,var(--c1) 60%,transparent);
  will-change: transform;
}

@media (prefers-reduced-motion:reduce) {
  .uvq12-ml,.uvq12-ml *,.uvq12-ml *::before,.uvq12-ml *::after {
    animation-duration: .01ms!important;
    animation-iteration-count: 1!important;
    transition-duration: .01ms!important;
  }
}
`;

// 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 ul=el.querySelector("ul"),ls=[...el.querySelectorAll("a")],dt=el.querySelector(".dt");let cur=ls[0],tg=null,x=0,v=0,raf=0,last=0;
const rm=matchMedia("(prefers-reduced-motion: reduce)").matches;const cx=a=>a.parentElement.offsetLeft+a.parentElement.offsetWidth/2;
const loop=t=>{const dt0=Math.min(32,t-(last||t))/16.7;last=t;const g=cx(tg||cur);v+=(g-x)*.14*dt0;v*=Math.pow(.74,dt0);x+=v*dt0;const s=1+Math.min(Math.abs(v)/6,2.2);dt.style.transform="translateX("+x.toFixed(2)+"px) scaleX("+s.toFixed(3)+")";if(Math.abs(g-x)<.2&&Math.abs(v)<.05){x=g;dt.style.transform="translateX("+x+"px)";raf=0;last=0;return}raf=requestAnimationFrame(loop)};
const kick=()=>{if(rm){x=cx(tg||cur);dt.style.transform="translateX("+x+"px)";return}if(!raf)raf=requestAnimationFrame(loop)};
ls.forEach(a=>{a.addEventListener("pointerenter",()=>{tg=a;kick()});a.addEventListener("pointermove",e=>{if(rm||e.pointerType!=="mouse")return;const r=a.getBoundingClientRect();a.classList.add("mg");a.style.transform="translate("+((e.clientX-r.left-r.width/2)*.3).toFixed(1)+"px,"+((e.clientY-r.top-r.height/2)*.35).toFixed(1)+"px)"});a.addEventListener("pointerleave",()=>{a.classList.remove("mg");a.style.transform="";tg=null;kick()});
a.addEventListener("focus",()=>{tg=a;kick()});a.addEventListener("blur",()=>{tg=null;kick()});
a.addEventListener("click",e=>{e.preventDefault();cur=a;ls.forEach(o=>{if(o===a)o.setAttribute("aria-current","page");else o.removeAttribute("aria-current")});kick()});
a.addEventListener("keydown",e=>{const i=ls.indexOf(a),n=e.key==="ArrowRight"?i+1:e.key==="ArrowLeft"?i-1:-1;if(n>=0&&n<ls.length){e.preventDefault();ls[n].focus()}})});
x=cx(cur);dt.style.transform="translateX("+x+"px)";dt.style.opacity="1";const ro=new ResizeObserver(()=>{x=cx(tg||cur);kick()});ro.observe(ul);return()=>{cancelAnimationFrame(raf);ro.disconnect()}
}

export default function NavMagnetLinks() {
  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": "#e11d48",
          "--c2": "#fb923c",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <nav className="uvq12-ml" aria-label="Navigation"><ul><li><a href="#" aria-current="page">Work</a></li><li><a href="#">Studio</a></li><li><a href="#">Blog</a></li><li><a href="#">Shop</a></li><li><a href="#">Contact</a></li></ul><span className="dt" aria-hidden="true"></span></nav>
      </div>
    </>
  );
}
```

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