# Vertical segmented control

> Stacked options for desktop sidebars, with an indicator that slides up and down to the active one.

- Category: [Filters](https://library.aimran.es/components/filters)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/uv-f-seg-vertical
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham

## Where to use it

Think of the settings page of a web app: Overview, Billing, Team and Notifications stacked on the left while the content changes on the right. The sliding block shows where you are without a heavy menu. It also works for documentation sections or a store's account area. Also known as vertical tabs or sidebar navigation in CSS.

Keep it to five or six items, and give it a fixed width so the indicator doesn't jump when labels differ in length. On phones, a vertical list takes up a lot of room; switch to horizontal chips or a dropdown there.

## Code

### HTML

```html
<div class="uv-fsv"><span class="p"></span><button class="on">Overview</button><button>Design</button><button>Code</button><button>Settings</button></div>
```

### CSS

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

.uv-fsv {
  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: inline-flex;
  flex-direction: column;
  gap: .15em;
  padding: .4em;
  border-radius: 1em;
  background: color-mix(in srgb,var(--fg) 7%,transparent);
  min-width: 10em;
}

.uv-fsv button {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 550;
  line-height: 1;
  padding: .72em 1.25em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  background: transparent;
  color: var(--fg);
  position: relative;
  transition: color calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  text-align: left;
  border-radius: .7em;
  padding: .7em 1em;
  z-index: 1;
}

.uv-fsv button.on {
  color: #fff;
}

.uv-fsv button:not(.on):hover {
  color: var(--c1);
  transform: translateX(2px);
}

.uv-fsv .p {
  position: absolute;
  left: .4em;
  top: 0;
  width: calc(100% - .8em);
  border-radius: .7em;
  background: var(--c1);
  box-shadow: 0 6px 16px color-mix(in srgb,var(--c1) 34%,transparent);
  transition: transform calc(0.42s / var(--k)) cubic-bezier(.34,1.56,.64,1),height calc(0.42s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}
```

### JavaScript

```js
document.querySelectorAll(".uv-fsv").forEach(el => {
  const p=el.querySelector(".p"),bs=[...el.querySelectorAll("button")];const mv=b=>{p.style.height=b.offsetHeight+"px";p.style.transform="translateY("+b.offsetTop+"px)"};bs.forEach(b=>b.addEventListener("click",()=>{bs.forEach(x=>x.classList.remove("on"));b.classList.add("on");mv(b)}));requestAnimationFrame(()=>mv(el.querySelector("button.on")))
});
```

### 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-fsv {
  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: inline-flex;
  flex-direction: column;
  gap: .15em;
  padding: .4em;
  border-radius: 1em;
  background: color-mix(in srgb,var(--fg) 7%,transparent);
  min-width: 10em;
}

.uv-fsv button {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 550;
  line-height: 1;
  padding: .72em 1.25em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  background: transparent;
  color: var(--fg);
  position: relative;
  transition: color calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  text-align: left;
  border-radius: .7em;
  padding: .7em 1em;
  z-index: 1;
}

.uv-fsv button.on {
  color: #fff;
}

.uv-fsv button:not(.on):hover {
  color: var(--c1);
  transform: translateX(2px);
}

.uv-fsv .p {
  position: absolute;
  left: .4em;
  top: 0;
  width: calc(100% - .8em);
  border-radius: .7em;
  background: var(--c1);
  box-shadow: 0 6px 16px color-mix(in srgb,var(--c1) 34%,transparent);
  transition: transform calc(0.42s / var(--k)) cubic-bezier(.34,1.56,.64,1),height calc(0.42s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}
`;

// 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 p=el.querySelector(".p"),bs=[...el.querySelectorAll("button")];const mv=b=>{p.style.height=b.offsetHeight+"px";p.style.transform="translateY("+b.offsetTop+"px)"};bs.forEach(b=>b.addEventListener("click",()=>{bs.forEach(x=>x.classList.remove("on"));b.classList.add("on");mv(b)}));requestAnimationFrame(()=>mv(el.querySelector("button.on")))
}

export default function FSegVertical() {
  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-fsv"><span className="p"></span><button className="on">Overview</button><button>Design</button><button>Code</button><button>Settings</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 “Vertical segmented control” block (Filters) from AIMRAN Library to my project.

## What it is
Stacked options for desktop sidebars, with an indicator that slides up and down to the active one.

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

## 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-fsv {
  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: inline-flex;
  flex-direction: column;
  gap: .15em;
  padding: .4em;
  border-radius: 1em;
  background: color-mix(in srgb,var(--fg) 7%,transparent);
  min-width: 10em;
}

.uv-fsv button {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 550;
  line-height: 1;
  padding: .72em 1.25em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  background: transparent;
  color: var(--fg);
  position: relative;
  transition: color calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  text-align: left;
  border-radius: .7em;
  padding: .7em 1em;
  z-index: 1;
}

.uv-fsv button.on {
  color: #fff;
}

.uv-fsv button:not(.on):hover {
  color: var(--c1);
  transform: translateX(2px);
}

.uv-fsv .p {
  position: absolute;
  left: .4em;
  top: 0;
  width: calc(100% - .8em);
  border-radius: .7em;
  background: var(--c1);
  box-shadow: 0 6px 16px color-mix(in srgb,var(--c1) 34%,transparent);
  transition: transform calc(0.42s / var(--k)) cubic-bezier(.34,1.56,.64,1),height calc(0.42s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}
`;

// 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 p=el.querySelector(".p"),bs=[...el.querySelectorAll("button")];const mv=b=>{p.style.height=b.offsetHeight+"px";p.style.transform="translateY("+b.offsetTop+"px)"};bs.forEach(b=>b.addEventListener("click",()=>{bs.forEach(x=>x.classList.remove("on"));b.classList.add("on");mv(b)}));requestAnimationFrame(()=>mv(el.querySelector("button.on")))
}

export default function FSegVertical() {
  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-fsv"><span className="p"></span><button className="on">Overview</button><button>Design</button><button>Code</button><button>Settings</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.
````