# Filter sidebar

> Collapsible sections, animated checkboxes and a result count that ticks up or down as you filter.

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

## Where to use it

The classic left column of a catalogue on desktop. An online bookshop is a good example: genre, price and reading level in folding sections, each tick updating the number of books that match. The counter rolling to its new value tells people the filter worked before they even look at the grid. Also called a faceted search sidebar.

Open the most used section by default and leave the rest folded. The “Clear all” button at the bottom is small but saves a lot of clicking. On tablets and phones, move the same content into a bottom sheet.

## Code

### HTML

```html
<div class="uv-fsb"><div class="hd">Filters<b class="ct">248</b></div><div class="ac open"><button class="ah">Category<i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round"><path d="M6 9l6 6 6-6"/></svg></i></button><div class="ab"><label><span class="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5"/></svg></span>Design</label><label><span class="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5"/></svg></span>Code</label><label><span class="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5"/></svg></span>Photos</label><label><span class="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5"/></svg></span>Video</label></div></div><div class="ac"><button class="ah">Price<i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round"><path d="M6 9l6 6 6-6"/></svg></i></button><div class="ab"><label><span class="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5"/></svg></span>Free</label><label><span class="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5"/></svg></span>Under €20</label><label><span class="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5"/></svg></span>Over €20</label></div></div><div class="ac"><button class="ah">Level<i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round"><path d="M6 9l6 6 6-6"/></svg></i></button><div class="ab"><label><span class="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5"/></svg></span>Basic</label><label><span class="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5"/></svg></span>Advanced</label></div></div><button class="cl">Clear all</button></div>
```

### CSS

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

.uv-fsb {
  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;
  width: 15em;
  display: flex;
  flex-direction: column;
  padding: 1.1em;
  border-radius: 1.3em;
  background: var(--bg);
  box-shadow: 0 14px 40px rgba(0,0,0,.1),inset 0 0 0 1px color-mix(in srgb,var(--fg) 7%,transparent);
}

.uv-fsb .hd {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: .8em;
  font-weight: 700;
  font-size: calc(var(--s) * 1.02);
}

.uv-fsb .ct {
  font-size: calc(var(--s) * .8);
  font-weight: 700;
  color: var(--c1);
  font-variant-numeric: tabular-nums;
}

.uv-fsb .ac {
  box-shadow: inset 0 1px 0 color-mix(in srgb,var(--fg) 9%,transparent);
}

.uv-fsb .ah {
  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),background calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: .75em 0;
  border-radius: 0;
  font-weight: 600;
  font-size: calc(var(--s) * .9);
}

.uv-fsb .ah i {
  display: grid;
  place-items: center;
  transition: transform calc(0.35s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-fsb .ah svg {
  width: .95em;
  height: .95em;
  opacity: .55;
}

.uv-fsb .ac.open .ah i {
  transform: rotate(180deg);
}

.uv-fsb .ab {
  display: flex;
  flex-direction: column;
  gap: .1em;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height calc(0.42s / var(--k)) cubic-bezier(.25,.1,.25,1),opacity calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1),padding calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-fsb .ac.open .ab {
  max-height: 12em;
  opacity: 1;
  padding-bottom: .7em;
}

.uv-fsb label {
  display: flex;
  align-items: center;
  gap: .6em;
  padding: .4em .2em;
  border-radius: .5em;
  cursor: pointer;
  font-size: calc(var(--s) * .86);
  transition: background calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.3s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-fsb label:hover {
  background: color-mix(in srgb,var(--fg) 6%,transparent);
  transform: translateX(2px);
}

.uv-fsb .ck {
  display: grid;
  place-items: center;
  width: 1.15em;
  height: 1.15em;
  flex: 0 0 auto;
  border-radius: .35em;
  box-shadow: inset 0 0 0 1.6px color-mix(in srgb,var(--fg) 24%,transparent);
  transition: background calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1),box-shadow calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1),scale calc(0.35s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-fsb .ck svg {
  width: .78em;
  height: .78em;
  color: #fff;
}

.uv-fsb .ck svg path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-fsb label.on .ck {
  background: var(--c1);
  box-shadow: inset 0 0 0 1.6px var(--c1);
  scale: 1.08;
}

.uv-fsb label.on .ck svg path {
  stroke-dashoffset: 0;
}

.uv-fsb .cl {
  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),background calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  margin-top: .7em;
  font-size: calc(var(--s) * .84);
  color: var(--c1);
  box-shadow: inset 0 0 0 1.5px color-mix(in srgb,var(--c1) 32%,transparent);
}

.uv-fsb .cl:hover {
  background: color-mix(in srgb,var(--c1) 10%,transparent);
}
```

### JavaScript

```js
document.querySelectorAll(".uv-fsb").forEach(el => {
  const ct=el.querySelector(".ct");let shown=248,tm=0;const to=v=>{clearInterval(tm);tm=setInterval(()=>{if(shown===v){clearInterval(tm);return}shown+=Math.sign(v-shown)*Math.max(1,Math.round(Math.abs(v-shown)/6));ct.textContent=shown},24)};const upd=()=>{const n=el.querySelectorAll("label.on").length;to(n?Math.max(6,Math.round(248/(1+n*1.6))):248)};el.querySelectorAll(".ah").forEach(h=>h.addEventListener("click",()=>h.parentElement.classList.toggle("open")));el.querySelectorAll("label").forEach(l=>l.addEventListener("click",()=>{l.classList.toggle("on");upd()}));el.querySelector(".cl").addEventListener("click",()=>{el.querySelectorAll("label").forEach(l=>l.classList.remove("on"));upd()})
});
```

### 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-fsb {
  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;
  width: 15em;
  display: flex;
  flex-direction: column;
  padding: 1.1em;
  border-radius: 1.3em;
  background: var(--bg);
  box-shadow: 0 14px 40px rgba(0,0,0,.1),inset 0 0 0 1px color-mix(in srgb,var(--fg) 7%,transparent);
}

.uv-fsb .hd {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: .8em;
  font-weight: 700;
  font-size: calc(var(--s) * 1.02);
}

.uv-fsb .ct {
  font-size: calc(var(--s) * .8);
  font-weight: 700;
  color: var(--c1);
  font-variant-numeric: tabular-nums;
}

.uv-fsb .ac {
  box-shadow: inset 0 1px 0 color-mix(in srgb,var(--fg) 9%,transparent);
}

.uv-fsb .ah {
  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),background calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: .75em 0;
  border-radius: 0;
  font-weight: 600;
  font-size: calc(var(--s) * .9);
}

.uv-fsb .ah i {
  display: grid;
  place-items: center;
  transition: transform calc(0.35s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-fsb .ah svg {
  width: .95em;
  height: .95em;
  opacity: .55;
}

.uv-fsb .ac.open .ah i {
  transform: rotate(180deg);
}

.uv-fsb .ab {
  display: flex;
  flex-direction: column;
  gap: .1em;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height calc(0.42s / var(--k)) cubic-bezier(.25,.1,.25,1),opacity calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1),padding calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-fsb .ac.open .ab {
  max-height: 12em;
  opacity: 1;
  padding-bottom: .7em;
}

.uv-fsb label {
  display: flex;
  align-items: center;
  gap: .6em;
  padding: .4em .2em;
  border-radius: .5em;
  cursor: pointer;
  font-size: calc(var(--s) * .86);
  transition: background calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.3s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-fsb label:hover {
  background: color-mix(in srgb,var(--fg) 6%,transparent);
  transform: translateX(2px);
}

.uv-fsb .ck {
  display: grid;
  place-items: center;
  width: 1.15em;
  height: 1.15em;
  flex: 0 0 auto;
  border-radius: .35em;
  box-shadow: inset 0 0 0 1.6px color-mix(in srgb,var(--fg) 24%,transparent);
  transition: background calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1),box-shadow calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1),scale calc(0.35s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-fsb .ck svg {
  width: .78em;
  height: .78em;
  color: #fff;
}

.uv-fsb .ck svg path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-fsb label.on .ck {
  background: var(--c1);
  box-shadow: inset 0 0 0 1.6px var(--c1);
  scale: 1.08;
}

.uv-fsb label.on .ck svg path {
  stroke-dashoffset: 0;
}

.uv-fsb .cl {
  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),background calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  margin-top: .7em;
  font-size: calc(var(--s) * .84);
  color: var(--c1);
  box-shadow: inset 0 0 0 1.5px color-mix(in srgb,var(--c1) 32%,transparent);
}

.uv-fsb .cl:hover {
  background: color-mix(in srgb,var(--c1) 10%,transparent);
}
`;

// 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 ct=el.querySelector(".ct");let shown=248,tm=0;const to=v=>{clearInterval(tm);tm=setInterval(()=>{if(shown===v){clearInterval(tm);return}shown+=Math.sign(v-shown)*Math.max(1,Math.round(Math.abs(v-shown)/6));ct.textContent=shown},24)};const upd=()=>{const n=el.querySelectorAll("label.on").length;to(n?Math.max(6,Math.round(248/(1+n*1.6))):248)};el.querySelectorAll(".ah").forEach(h=>h.addEventListener("click",()=>h.parentElement.classList.toggle("open")));el.querySelectorAll("label").forEach(l=>l.addEventListener("click",()=>{l.classList.toggle("on");upd()}));el.querySelector(".cl").addEventListener("click",()=>{el.querySelectorAll("label").forEach(l=>l.classList.remove("on"));upd()})
}

export default function FDeskSidebar() {
  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-fsb"><div className="hd">Filters<b className="ct">248</b></div><div className="ac open"><button className="ah">Category<i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.2" strokeLinecap="round" strokeLinejoin="round"><path d="M6 9l6 6 6-6" /></svg></i></button><div className="ab"><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Design</label><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Code</label><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Photos</label><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Video</label></div></div><div className="ac"><button className="ah">Price<i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.2" strokeLinecap="round" strokeLinejoin="round"><path d="M6 9l6 6 6-6" /></svg></i></button><div className="ab"><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Free</label><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Under €20</label><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Over €20</label></div></div><div className="ac"><button className="ah">Level<i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.2" strokeLinecap="round" strokeLinejoin="round"><path d="M6 9l6 6 6-6" /></svg></i></button><div className="ab"><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Basic</label><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Advanced</label></div></div><button className="cl">Clear all</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 “Filter sidebar” block (Filters) from AIMRAN Library to my project.

## What it is
Collapsible sections, animated checkboxes and a result count that ticks up or down as you filter.

## 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-fsb {
  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;
  width: 15em;
  display: flex;
  flex-direction: column;
  padding: 1.1em;
  border-radius: 1.3em;
  background: var(--bg);
  box-shadow: 0 14px 40px rgba(0,0,0,.1),inset 0 0 0 1px color-mix(in srgb,var(--fg) 7%,transparent);
}

.uv-fsb .hd {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: .8em;
  font-weight: 700;
  font-size: calc(var(--s) * 1.02);
}

.uv-fsb .ct {
  font-size: calc(var(--s) * .8);
  font-weight: 700;
  color: var(--c1);
  font-variant-numeric: tabular-nums;
}

.uv-fsb .ac {
  box-shadow: inset 0 1px 0 color-mix(in srgb,var(--fg) 9%,transparent);
}

.uv-fsb .ah {
  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),background calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: .75em 0;
  border-radius: 0;
  font-weight: 600;
  font-size: calc(var(--s) * .9);
}

.uv-fsb .ah i {
  display: grid;
  place-items: center;
  transition: transform calc(0.35s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-fsb .ah svg {
  width: .95em;
  height: .95em;
  opacity: .55;
}

.uv-fsb .ac.open .ah i {
  transform: rotate(180deg);
}

.uv-fsb .ab {
  display: flex;
  flex-direction: column;
  gap: .1em;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height calc(0.42s / var(--k)) cubic-bezier(.25,.1,.25,1),opacity calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1),padding calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-fsb .ac.open .ab {
  max-height: 12em;
  opacity: 1;
  padding-bottom: .7em;
}

.uv-fsb label {
  display: flex;
  align-items: center;
  gap: .6em;
  padding: .4em .2em;
  border-radius: .5em;
  cursor: pointer;
  font-size: calc(var(--s) * .86);
  transition: background calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.3s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-fsb label:hover {
  background: color-mix(in srgb,var(--fg) 6%,transparent);
  transform: translateX(2px);
}

.uv-fsb .ck {
  display: grid;
  place-items: center;
  width: 1.15em;
  height: 1.15em;
  flex: 0 0 auto;
  border-radius: .35em;
  box-shadow: inset 0 0 0 1.6px color-mix(in srgb,var(--fg) 24%,transparent);
  transition: background calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1),box-shadow calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1),scale calc(0.35s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-fsb .ck svg {
  width: .78em;
  height: .78em;
  color: #fff;
}

.uv-fsb .ck svg path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-fsb label.on .ck {
  background: var(--c1);
  box-shadow: inset 0 0 0 1.6px var(--c1);
  scale: 1.08;
}

.uv-fsb label.on .ck svg path {
  stroke-dashoffset: 0;
}

.uv-fsb .cl {
  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),background calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1),transform calc(0.32s / var(--k)) cubic-bezier(.34,1.56,.64,1);
  margin-top: .7em;
  font-size: calc(var(--s) * .84);
  color: var(--c1);
  box-shadow: inset 0 0 0 1.5px color-mix(in srgb,var(--c1) 32%,transparent);
}

.uv-fsb .cl:hover {
  background: color-mix(in srgb,var(--c1) 10%,transparent);
}
`;

// 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 ct=el.querySelector(".ct");let shown=248,tm=0;const to=v=>{clearInterval(tm);tm=setInterval(()=>{if(shown===v){clearInterval(tm);return}shown+=Math.sign(v-shown)*Math.max(1,Math.round(Math.abs(v-shown)/6));ct.textContent=shown},24)};const upd=()=>{const n=el.querySelectorAll("label.on").length;to(n?Math.max(6,Math.round(248/(1+n*1.6))):248)};el.querySelectorAll(".ah").forEach(h=>h.addEventListener("click",()=>h.parentElement.classList.toggle("open")));el.querySelectorAll("label").forEach(l=>l.addEventListener("click",()=>{l.classList.toggle("on");upd()}));el.querySelector(".cl").addEventListener("click",()=>{el.querySelectorAll("label").forEach(l=>l.classList.remove("on"));upd()})
}

export default function FDeskSidebar() {
  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-fsb"><div className="hd">Filters<b className="ct">248</b></div><div className="ac open"><button className="ah">Category<i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.2" strokeLinecap="round" strokeLinejoin="round"><path d="M6 9l6 6 6-6" /></svg></i></button><div className="ab"><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Design</label><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Code</label><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Photos</label><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Video</label></div></div><div className="ac"><button className="ah">Price<i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.2" strokeLinecap="round" strokeLinejoin="round"><path d="M6 9l6 6 6-6" /></svg></i></button><div className="ab"><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Free</label><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Under €20</label><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Over €20</label></div></div><div className="ac"><button className="ah">Level<i><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.2" strokeLinecap="round" strokeLinejoin="round"><path d="M6 9l6 6 6-6" /></svg></i></button><div className="ab"><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Basic</label><label><span className="ck"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" /></svg></span>Advanced</label></div></div><button className="cl">Clear all</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.
````