# Sidebar Menu

> A side panel that slides in over the page, then big links rise one by one. A real dialog: focus kept inside, Escape to leave. No GSAP.

Navigation · menu, sidebar, dialog, nav · HTML, CSS, vanilla JS · no dependencies · updated 2026-10-16
Demo: https://kodza.dev/components/sidebar-toggle-menu/

Takes the whole screen (or reacts to the page scroll): give it a page, not a small box.

## Files

The code below, served as files: byte for byte what the Kodza site copies (the CSS includes its theme guard).

- [`kodza-sidebar-toggle-menu.css`](https://kodza.dev/registry/sidebar-toggle-menu/kodza-sidebar-toggle-menu.css) · 13.2 KB
- [`kodza-sidebar-toggle-menu.js`](https://kodza.dev/registry/sidebar-toggle-menu/kodza-sidebar-toggle-menu.js) · 5.8 KB
- [`kodza-sidebar-toggle-menu.html`](https://kodza.dev/registry/sidebar-toggle-menu/kodza-sidebar-toggle-menu.html) · 1.1 KB · the markup, to adapt and paste into your page

**Can you run shell commands? Download the CSS and the JS, don't retype them.** Retyping costs thousands of tokens and can drop or change lines of the CSS. Put the files where your stack expects them (Use it says where: change the `-o` paths):

```bash
curl -fsSL --create-dirs -o kodza/kodza-sidebar-toggle-menu.css https://kodza.dev/registry/sidebar-toggle-menu/kodza-sidebar-toggle-menu.css
curl -fsSL --create-dirs -o kodza/kodza-sidebar-toggle-menu.js https://kodza.dev/registry/sidebar-toggle-menu/kodza-sidebar-toggle-menu.js
```

Then load the files from your page as Use it shows, instead of pasting the content. The HTML is the part you adapt (text, links, modifiers): paste it from the Code section. Copy the CSS and the JS from the Code section only if you can't run commands, exactly as they are. (Windows PowerShell: `curl.exe`.)

## API

- Root: `.kodza-sidebar`
- Variables (set them on the root element itself: it declares its own defaults):
  - `--kz-sidebar-bg: #ffffff`
  - `--kz-sidebar-fg: #0a0a0a`
  - `--kz-sidebar-muted: rgba(10, 10, 10, 0.5)`
  - `--kz-sidebar-border: rgba(10, 10, 10, 0.1)`
  - `--kz-sidebar-ink: #0a0a0a`
  - `--kz-sidebar-on-ink: #ffffff`
  - `--kz-sidebar-backdrop: rgba(10, 10, 10, 0.32)`
  - `--kz-sidebar-width: 496px`
  - `--kz-sidebar-size: clamp(34px, 5vw, 48px)`
  - `--kz-sidebar-duration: 0.7s`
  - `--kz-sidebar-ease: cubic-bezier(0.76, 0, 0.24, 1)`
  - `--kz-sidebar-rise: cubic-bezier(0.22, 1, 0.36, 1)`
- Lifecycle: `kodza:init` / `kodza:destroy` on `document`, with `{ detail: { root } }` to target a container.

## Keyboard

What each key does, by where the focus is. Keep it working when you adapt the HTML: same elements, same classes.

- On the button (focus in `.kodza-sidebar__toggle`):
  - `Enter` / `Space`: Opens it, focus goes into the panel
- In the panel (focus in `.kodza-sidebar__panel`):
  - `Tab` / `Shift+Tab`: Next or previous control, the page behind is out of reach
- Anywhere, while it's open (while `.kodza-sidebar__panel[open]` is on the page):
  - `Escape`: Closes it, focus back on the button

## Dark mode

The values Kodza uses on a dark background (`#0a0a0a`). For a page that follows the system theme, add them after the component's CSS:

```css
@media (prefers-color-scheme: dark) {
  .kodza-sidebar {
    --kz-sidebar-bg: #161616;
    --kz-sidebar-fg: #f2f2f0;
    --kz-sidebar-muted: rgba(242, 242, 240, 0.52);
    --kz-sidebar-border: rgba(255, 255, 255, 0.12);
    --kz-sidebar-ink: #f2f2f0;
    --kz-sidebar-on-ink: #0a0a0a;
    --kz-sidebar-backdrop: rgba(0, 0, 0, 0.6);
  }
}
```

A site with its own theme switch puts the same rules under its dark selector instead (`[data-theme="dark"] .kodza-sidebar { … }`); a single dark section, under that section's class.

## Use it

### Plain HTML page

- CSS: `kodza/kodza-sidebar-toggle-menu.css` next to the page (the Files commands as they are), linked in `<head>`: `<link rel="stylesheet" href="kodza/kodza-sidebar-toggle-menu.css">`. Without a shell, paste it in a `<style>` in `<head>` instead. It only touches `kodza-` classes.
- HTML: where the component goes. Paste it as many times as you need: instances never interfere.
- JS: `kodza/kodza-sidebar-toggle-menu.js`, loaded with `<script src="kodza/kodza-sidebar-toggle-menu.js" defer></script>` in `<head>`. Without a shell, paste it in a `<script>` before `</body>` (or in `<head>`: it waits for the page). One copy per page, whatever the number of instances.
- Restyle with the `--kz-…` variables, set on the component's root element itself (the root declares its own defaults, so a value on an ancestor is ignored), and with the modifiers / attributes listed under API.
- Font: it takes the page's own. The Kodza look is Geist: `<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700&family=Geist+Mono:wght@400;500&display=swap">`.
- Content added later (AJAX navigation, a SPA route, a builder preview): start it with `document.dispatchEvent(new CustomEvent('kodza:init', { detail: { root: container } }))`; before removing it, the same call with `'kodza:destroy'` stops it and puts the original markup back.

### Claude artifact (claude.ai)

- Paste the CSS in a `<style>` and the JS in a `<script>` at the end, in the artifact itself: it loads stylesheets only from Google Fonts and scripts only from a few CDNs, so no `<link>` or `<script src>` to Kodza.
- Writing the artifact file with a shell? Insert the downloaded files (Files) with a command instead of retyping them: a line `KODZA-CSS` alone inside the `<style>`, `KODZA-JS` inside the `<script>`, then `sed -e '/^KODZA-CSS$/{r kodza/kodza-sidebar-toggle-menu.css' -e 'd' -e '}' -e '/^KODZA-JS$/{r kodza/kodza-sidebar-toggle-menu.js' -e 'd' -e '}' page.html > artifact.html`.
- Font: load Geist from Google Fonts (allowed): `<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700&family=Geist+Mono:wght@400;500&display=swap">`.
- Dark mode: the viewer sets `data-theme="dark"` or `"light"` on `<html>`, or nothing when it follows the system. Write the Dark mode rules twice: inside `@media (prefers-color-scheme: dark)` with `:root:not([data-theme="light"])` in front of each selector, and with `:root[data-theme="dark"]` in front of each selector.

### WordPress

- HTML: a **Custom HTML** block (or a pattern / template part). WordPress keeps this markup as it is only for users allowed to post unfiltered HTML (Administrators; Super Admins on multisite): for anyone else it strips tags such as `<svg>`, `<input>` or `<dialog>`, so add it from the theme (a pattern or template part) instead.
- This one is inline (it flows like a word): pasted alone, many themes leave it at the edge of the page (block themes, and classic ones like Twenty Twenty-One or Blocksy), so put the Custom HTML block inside a **Group** block to line it up with the text.
- CSS and JS: the downloaded files go in the theme, under `wp-content/themes/<your-theme>/kodza/` (the child theme if there is one), enqueued from its functions.php (or a code-snippets plugin):
  ```php
  add_action('wp_enqueue_scripts', function () {
    $dir = get_stylesheet_directory() . '/kodza/';
    $uri = get_stylesheet_directory_uri() . '/kodza/';
    wp_enqueue_style('kodza-sidebar-toggle-menu', $uri . 'kodza-sidebar-toggle-menu.css', [], filemtime($dir . 'kodza-sidebar-toggle-menu.css'));
    wp_enqueue_script('kodza-sidebar-toggle-menu', $uri . 'kodza-sidebar-toggle-menu.js', [], filemtime($dir . 'kodza-sidebar-toggle-menu.js'), true);
  });
  ```
  Scoped to `kodza-` classes, the CSS never touches the theme. One copy of the JS, whatever the number of blocks.
- No access to the theme files? The CSS can also go, as it is, in **Appearance → Customize → Additional CSS** (classic theme) or **Styles → Additional CSS** in the Site Editor (block theme).
- Theme with AJAX page transitions: fire `kodza:init` on the new content after each swap (and `kodza:destroy` on the old one).
- Performance plugin (WP Rocket, LiteSpeed Cache, Perfmatters…) with **Delay JavaScript execution** turned on: add `kodza` to the scripts it must not delay. Otherwise the component waits for the visitor's first scroll, tap or mouse move, and that first click can be lost.
- Colours: by default, match the theme's palette. After the component's CSS, point these variables at the theme's colours, on the component root, Kodza's value as the fallback:
  `.kodza-sidebar { --kz-sidebar-fg: var(TEXT, #0a0a0a); --kz-sidebar-bg: var(BACKGROUND, #ffffff); --kz-sidebar-ink: var(ACCENT, #0a0a0a); --kz-sidebar-on-ink: var(BACKGROUND, #ffffff); }`
  TEXT, BACKGROUND and ACCENT (the colour the theme fills its own buttons with) are the theme's own colour variables — block themes (theme.json, like Twenty Twenty-Five): `--wp--preset--color--contrast`, `--wp--preset--color--base`, `--wp--preset--color--contrast` (they fill their buttons with it; their accent-1… colours are decorative); Astra: `--ast-global-color-2`, `--ast-global-color-4`, `--ast-global-color-0`; Kadence: `--global-palette3`, `--global-palette9`, `--global-palette1`; GeneratePress: `--contrast`, `--base-3`, `--accent`; Blocksy: `--theme-palette-color-4`, `--theme-palette-color-8`, `--theme-palette-color-1`. Use only these names, and only if the site really has them (the theme's CSS, or Styles → Colors): the `--wp--preset--color--black`, `--white`, `--vivid-…` that WordPress adds everywhere are not the theme's palette. Another theme, or one without these variables (Hello Elementor, OceanWP): leave the variables alone, it keeps Kodza's monochrome; same when the developer asks for monochrome or the Kodza look. Leave the translucent greys (`rgba(10, 10, 10, …)`) as they are: they suit any light background. On a dark palette, set the other variables from Dark mode too.
- WordPress turns straight quotes and `--` into typographic ones in the text of a Custom HTML block (not inside `<code>` or `<pre>`).

#### With Elementor

- HTML: an **HTML** widget (Elementor shows it to administrators only). It keeps the code exactly as pasted, straight quotes included.
- CSS and JS: as above. Elementor's Site Settings → Theme Style styles every button, field, link and image of the page, components included; the theme guard at the end of the CSS keeps the component's buttons, fields and link colours as they are.
- The Elementor editor redraws each widget after the page has loaded: without the script below, the component stays still in the editor preview (the published page works). Add it once per site, in the footer like the component's script (`kodza/elementor-editor.js`, or a code-snippets plugin):

```js
// Kodza in the Elementor editor: the editor redraws each HTML widget after the page has loaded.
// Start Kodza in what it draws, stop it in what it replaces or removes. Once per site.
window.addEventListener('elementor/frontend/init', () => {
  if (!elementorFrontend.isEditMode()) return;
  class KodzaWidget extends elementorModules.frontend.handlers.Base {
    onInit() {
      super.onInit();
      this.kodza = [...this.$element[0].children];
      document.dispatchEvent(new CustomEvent('kodza:init', { detail: { root: this.$element[0] } }));
    }
    onDestroy() {
      super.onDestroy();
      this.kodza.forEach((root) => document.dispatchEvent(new CustomEvent('kodza:destroy', { detail: { root } })));
    }
  }
  elementorFrontend.elementsHandler.attachHandler('html', KodzaWidget);
});
```

- No child theme: everything can go in the HTML widget instead, `<style>` with the CSS, the HTML, then `<script>` with the JS. It works on the page and in the editor without the script above.

### Shopify

- Files: `assets/kodza-sidebar-toggle-menu.css` and `assets/kodza-sidebar-toggle-menu.js` (the Files commands with `-o assets/…`).
- In the section: `{{ 'kodza-sidebar-toggle-menu.css' | asset_url | stylesheet_tag }}` and `<script src="{{ 'kodza-sidebar-toggle-menu.js' | asset_url }}" defer></script>`, then the HTML.
- The theme editor re-renders sections: restart them with
  `document.addEventListener('shopify:section:load', (e) => document.dispatchEvent(new CustomEvent('kodza:init', { detail: { root: e.target } })));`
  and the same with `shopify:section:unload` → `kodza:destroy`.

### React / Next.js

- Files, side by side (e.g. in `components/kodza/`): `SidebarMenu.tsx` (below), the CSS block under Code saved as `sidebar-toggle-menu.css` and the JS block as `sidebar-toggle-menu.js`, both as they are. The HTML block is already inside the component: skip it.
- Use it: `import { SidebarMenu } from '@/components/kodza/SidebarMenu';` then `<SidebarMenu />`. Props: `vars` (the `--kz-…` variables listed under API, e.g. `vars={{ '--kz-sidebar-bg': … }}`), `className`, `style` and the other props of its `<div>` (`onClick`, `aria-…`).
- Next.js App Router: it is a Client Component already (`'use client'`). Pages Router: Next.js takes global CSS only in `pages/_app`, so move the `import './sidebar-toggle-menu.css'` line there.
- Safe under StrictMode, client-side navigation and prop changes: when a prop changes, the `key` gives React a fresh element, `kodza:destroy` stops the script on the old one and `kodza:init` starts it on the new one.

```tsx
'use client';
// Kodza — Sidebar Menu, for React. From https://kodza.dev/components/sidebar-toggle-menu/
// Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license
// Next to this file: sidebar-toggle-menu.css and sidebar-toggle-menu.js, the component's CSS and JS from Kodza, as they are.
// Yours to edit: the markup is plain JSX below.
// The script changes this markup once React has rendered it (it adds layers, splits text, moves
// nodes), so React must not patch it afterwards. When a prop changes, the key gives React a fresh
// element: kodza:destroy stops the script on the old one, kodza:init starts it on the new one.
import { useRef, useEffect, type ComponentPropsWithoutRef, type ComponentRef, type CSSProperties } from 'react';
import './sidebar-toggle-menu.css';

export type SidebarMenuProps = Omit<ComponentPropsWithoutRef<'div'>, "children" | "vars"> & {
  /** Settings, as CSS variables on the root */
  vars?: {
    /** default: #ffffff */
    "--kz-sidebar-bg"?: string | number;
    /** default: #0a0a0a */
    "--kz-sidebar-fg"?: string | number;
    /** default: rgba(10, 10, 10, 0.5) */
    "--kz-sidebar-muted"?: string | number;
    /** default: rgba(10, 10, 10, 0.1) */
    "--kz-sidebar-border"?: string | number;
    /** default: #0a0a0a */
    "--kz-sidebar-ink"?: string | number;
    /** default: #ffffff */
    "--kz-sidebar-on-ink"?: string | number;
    /** default: rgba(10, 10, 10, 0.32) */
    "--kz-sidebar-backdrop"?: string | number;
    /** default: 496px */
    "--kz-sidebar-width"?: string | number;
    /** default: clamp(34px, 5vw, 48px) */
    "--kz-sidebar-size"?: string | number;
    /** default: 0.7s */
    "--kz-sidebar-duration"?: string | number;
    /** default: cubic-bezier(0.76, 0, 0.24, 1) */
    "--kz-sidebar-ease"?: string | number;
    /** default: cubic-bezier(0.22, 1, 0.36, 1) */
    "--kz-sidebar-rise"?: string | number;
  };
  className?: string;
};

export function SidebarMenu({ vars, className, style, ...rest }: SidebarMenuProps) {
  const ref = useRef<ComponentRef<'div'>>(null);
  const classes = ["kodza-sidebar", className].filter(Boolean).join(' ');
  // Everything the markup is made of: when it changes, React gets a fresh element (see the top)
  const key = JSON.stringify([classes, vars, style, rest]);

  // Starts the script on this element once React has rendered it, stops it when it goes
  useEffect(() => {
    const root = ref.current;
    let live = true;
    // @ts-ignore: a plain script, no types to find
    import('./sidebar-toggle-menu.js').then(() => {
      if (live) document.dispatchEvent(new CustomEvent('kodza:init', { detail: { root } }));
    });
    return () => {
      live = false;
      document.dispatchEvent(new CustomEvent('kodza:destroy', { detail: { root } }));
    };
  }, [key]);

  return (
    <div key={key} {...rest} className={classes} style={{ ...vars, ...style } as CSSProperties} ref={ref}>
      <button className="kodza-sidebar__toggle" type="button" aria-haspopup="dialog" aria-expanded="false">Menu</button>
      <dialog className="kodza-sidebar__panel" aria-label="Menu">
        <button className="kodza-sidebar__close" type="button">Close</button>
        <nav className="kodza-sidebar__nav" aria-label="Main">
          <a className="kodza-sidebar__link" href="#">
            <span className="kodza-sidebar__index">01</span>
            <span className="kodza-sidebar__text">Work</span>
          </a>
          {' '}
          <a className="kodza-sidebar__link" href="#">
            <span className="kodza-sidebar__index">02</span>
            <span className="kodza-sidebar__text">Studio</span>
          </a>
          {' '}
          <a className="kodza-sidebar__link" href="#">
            <span className="kodza-sidebar__index">03</span>
            <span className="kodza-sidebar__text">Journal</span>
          </a>
          {' '}
          <a className="kodza-sidebar__link" href="#">
            <span className="kodza-sidebar__index">04</span>
            <span className="kodza-sidebar__text">Contact</span>
          </a>
        </nav>
        <div className="kodza-sidebar__footer">
          <p className="kodza-sidebar__note">Made with too much coffee.</p>
          <p className="kodza-sidebar__socials">
            <a href="#">GitHub</a>
            <a href="#">X</a>
            <a href="#">RSS</a>
          </p>
        </div>
      </dialog>
    </div>
  );
}
```

## Code

```html
<div class="kodza-sidebar">
  <button class="kodza-sidebar__toggle" type="button" aria-haspopup="dialog" aria-expanded="false">Menu</button>
  <dialog class="kodza-sidebar__panel" aria-label="Menu">
    <button class="kodza-sidebar__close" type="button">Close</button>
    <nav class="kodza-sidebar__nav" aria-label="Main">
      <a class="kodza-sidebar__link" href="#"><span class="kodza-sidebar__index">01</span><span class="kodza-sidebar__text">Work</span></a>
      <a class="kodza-sidebar__link" href="#"><span class="kodza-sidebar__index">02</span><span class="kodza-sidebar__text">Studio</span></a>
      <a class="kodza-sidebar__link" href="#"><span class="kodza-sidebar__index">03</span><span class="kodza-sidebar__text">Journal</span></a>
      <a class="kodza-sidebar__link" href="#"><span class="kodza-sidebar__index">04</span><span class="kodza-sidebar__text">Contact</span></a>
    </nav>
    <div class="kodza-sidebar__footer">
      <p class="kodza-sidebar__note">Made with too much coffee.</p>
      <p class="kodza-sidebar__socials"><a href="#">GitHub</a><a href="#">X</a><a href="#">RSS</a></p>
    </div>
  </dialog>
</div>
```

```css
/* Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license */
/* Kodza — Sidebar Menu
   A side panel for the main navigation: it slides in from the right over a dimmed page,
   then its big links rise one by one from behind a mask. A real dialog element: the focus stays
   inside, Escape and a click on the page close it, and the focus goes back to the button.
   Everything is tuned with the --kz-sidebar-* variables. */
.kodza-sidebar {
  --kz-sidebar-bg: #ffffff;
  --kz-sidebar-fg: #0a0a0a;
  --kz-sidebar-muted: rgba(10, 10, 10, 0.5);
  --kz-sidebar-border: rgba(10, 10, 10, 0.1);
  --kz-sidebar-ink: #0a0a0a;
  --kz-sidebar-on-ink: #ffffff;
  --kz-sidebar-backdrop: rgba(10, 10, 10, 0.32);
  --kz-sidebar-width: 496px;
  --kz-sidebar-size: clamp(34px, 5vw, 48px);
  --kz-sidebar-duration: 0.7s;
  --kz-sidebar-ease: cubic-bezier(0.76, 0, 0.24, 1);
  --kz-sidebar-rise: cubic-bezier(0.22, 1, 0.36, 1);

  display: inline-block;
  color: var(--kz-sidebar-fg);
}

.kodza-sidebar__toggle,
.kodza-sidebar__close {
  height: 40px;
  padding: 0 18px;
  border: 0;
  border-radius: 999px;
  font: inherit;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
}

.kodza-sidebar__toggle {
  background: var(--kz-sidebar-ink);
  color: var(--kz-sidebar-on-ink);
}

.kodza-sidebar__close {
  justify-self: end;
  background: none;
  box-shadow: inset 0 0 0 1px var(--kz-sidebar-border);
  color: var(--kz-sidebar-fg);
  transition: box-shadow 0.25s ease;
}

.kodza-sidebar__close:hover {
  box-shadow: inset 0 0 0 1px var(--kz-sidebar-muted);
}

.kodza-sidebar__toggle:focus-visible,
.kodza-sidebar__close:focus-visible,
.kodza-sidebar__link:focus-visible,
.kodza-sidebar__socials a:focus-visible {
  outline: 2px solid var(--kz-sidebar-fg);
  outline-offset: 3px;
}

/* The panel: a dialog pinned to the right edge, sliding in. Its padding counts in its size, so a
   phone gets the whole screen and nothing more */
.kodza-sidebar__panel {
  position: fixed;
  inset: 0 0 0 auto;
  display: grid;
  grid-template-rows: auto 1fr auto;
  box-sizing: border-box;
  width: min(var(--kz-sidebar-width), 100%);
  max-width: none;
  height: 100%;
  max-height: none;
  margin: 0;
  padding: 20px 28px 28px;
  border: 0;
  background: var(--kz-sidebar-bg);
  color: var(--kz-sidebar-fg);
  font: inherit;
  transform: translateX(100%);
  transition: transform var(--kz-sidebar-duration) var(--kz-sidebar-ease);
}

.kodza-sidebar__panel:not([open]) {
  display: none;
}

.kodza-sidebar__panel::backdrop {
  background: transparent;
  transition: background-color var(--kz-sidebar-duration) ease;
}

.kodza-sidebar__panel.is-open {
  transform: none;
}

.kodza-sidebar__panel.is-open::backdrop {
  background: var(--kz-sidebar-backdrop);
}

.kodza-sidebar__nav {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}

/* Each link rises from behind its own mask, after the panel has arrived */
.kodza-sidebar__link {
  display: flex;
  align-items: baseline;
  gap: 16px;
  overflow: hidden;
  border-radius: 6px;
  color: inherit;
  text-decoration: none;
}

.kodza-sidebar__index,
.kodza-sidebar__text {
  display: block;
  transform: translateY(110%);
  transition: transform 0.4s ease-in;
}

.kodza-sidebar__panel.is-open .kodza-sidebar__index,
.kodza-sidebar__panel.is-open .kodza-sidebar__text {
  transform: none;
  transition:
    transform 0.9s var(--kz-sidebar-rise) calc(var(--kz-sidebar-duration) * 0.55 + var(--i, 0) * 70ms),
    opacity 0.3s ease;
}

.kodza-sidebar__index {
  width: 2ch;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px;
  color: var(--kz-sidebar-muted);
}

.kodza-sidebar__text {
  font-size: var(--kz-sidebar-size);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.03em;
  transition-property: transform, opacity;
}

/* Hovering a link fades the others */
.kodza-sidebar__nav:has(.kodza-sidebar__link:hover) .kodza-sidebar__text {
  opacity: 0.35;
}

.kodza-sidebar__nav .kodza-sidebar__link:hover .kodza-sidebar__text {
  opacity: 1;
}

.kodza-sidebar__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--kz-sidebar-border);
  font-size: 14px;
  color: var(--kz-sidebar-muted);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.kodza-sidebar__panel.is-open .kodza-sidebar__footer {
  opacity: 1;
  transition: opacity 0.6s ease calc(var(--kz-sidebar-duration) * 0.9);
}

.kodza-sidebar__note {
  margin: 0;
}

.kodza-sidebar__socials {
  display: flex;
  gap: 16px;
  margin: 0;
}

.kodza-sidebar__socials a {
  border-radius: 4px;
  color: var(--kz-sidebar-fg);
  font-weight: 500;
  text-decoration: none;
}

.kodza-sidebar__socials a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .kodza-sidebar__panel,
  .kodza-sidebar__panel::backdrop,
  .kodza-sidebar__index,
  .kodza-sidebar__text,
  .kodza-sidebar__footer,
  .kodza-sidebar__close {
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
  }
}

/* Theming example — on a dark background:
.dark-section .kodza-sidebar {
  --kz-sidebar-bg: #161616;
  --kz-sidebar-fg: #f2f2f0;
  --kz-sidebar-muted: rgba(242, 242, 240, 0.52);
  --kz-sidebar-border: rgba(255, 255, 255, 0.12);
  --kz-sidebar-ink: #f2f2f0;
  --kz-sidebar-on-ink: #0a0a0a;
  --kz-sidebar-backdrop: rgba(0, 0, 0, 0.6);
}
*/

/* kodza-guard e2ba1ea9ba5e — generated by Kodza, do not edit.
   Theme guard: keeps a site's own CSS (WordPress themes, Bootstrap, CSS resets…) off this
   component. :not(#_) is always true and weighs as much as an id, so these lines win over
   theme rules made of classes and tags. Customise the component through its --kz-* variables. */

/* What the browser gives, where the component sets it only in some states: at the lowest weight, so its own rules below put it back */

:where(.kodza-sidebar__toggle):not(#_),
:where(.kodza-sidebar__close):not(#_),
:where(.kodza-sidebar__link):not(#_) {
  outline: revert;
  outline-offset: revert;
}

:where(.kodza-sidebar__socials a:where(:not([class*="kodza-"]))):not(#_) {
  outline: revert;
  outline-offset: revert;
  text-underline-offset: revert;
}

/* What the browser gives, on everything the component leaves to it */

.kodza-sidebar:not(#_),
.kodza-sidebar__index:not(#_),
.kodza-sidebar__text:not(#_),
.kodza-sidebar__footer:not(#_) {
  box-sizing: revert;
}

.kodza-sidebar__toggle:not(#_) {
  margin: revert;
  text-decoration: revert;
  transition: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  position: revert;
  box-shadow: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
  white-space: revert;
  min-height: revert;
}

.kodza-sidebar__panel:not(#_) {
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  list-style: revert;
  float: revert;
  box-shadow: revert;
  outline-offset: revert;
  appearance: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
}

.kodza-sidebar__close:not(#_) {
  margin: revert;
  text-decoration: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  position: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
  white-space: revert;
  min-height: revert;
}

.kodza-sidebar__nav:not(#_) {
  border: revert;
  margin: revert;
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  transition: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  position: revert;
  background-color: revert;
  background-image: revert;
  box-shadow: revert;
  outline-offset: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  color: revert;
  font-family: revert;
  font-size: revert;
  font-weight: revert;
  font-style: revert;
  line-height: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
}

.kodza-sidebar__link:not(#_) {
  border: revert;
  margin: revert;
  padding: revert;
  transition: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  position: revert;
  background-color: revert;
  background-image: revert;
  box-shadow: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  font-family: revert;
  font-size: revert;
  font-weight: revert;
  font-style: revert;
  line-height: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
}

.kodza-sidebar__note:not(#_),
.kodza-sidebar__socials:not(#_) {
  border: revert;
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  transition: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  position: revert;
  background-color: revert;
  background-image: revert;
  box-shadow: revert;
  outline-offset: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  color: revert;
  font-family: revert;
  font-size: revert;
  font-weight: revert;
  font-style: revert;
  line-height: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
}

.kodza-sidebar__socials a:where(:not([class*="kodza-"])):not(#_) {
  border: revert;
  margin: revert;
  padding: revert;
  transition: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  position: revert;
  background-color: revert;
  background-image: revert;
  box-shadow: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  font-family: revert;
  font-size: revert;
  font-style: revert;
  line-height: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
}

.kodza-sidebar__toggle:not(#_):where(:not([hidden])),
.kodza-sidebar__close:not(#_):where(:not([hidden])),
.kodza-sidebar__note:not(#_):where(:not([hidden])),
.kodza-sidebar__socials a:where(:not([class*="kodza-"])):not(#_):where(:not([hidden])) {
  display: revert;
}

.kodza-sidebar__toggle:not(#_):where([hidden]),
.kodza-sidebar__close:not(#_):where([hidden]),
.kodza-sidebar__note:not(#_):where([hidden]),
.kodza-sidebar__socials a:where(:not([class*="kodza-"])):not(#_):where([hidden]) {
  display: none;
}

/* The component's own rules, one step stronger: real buttons and fields, what it sets on tags themes style (links, lists, headings, images…), and the root width (a theme may narrow it, never widen it) */

.kodza-sidebar__toggle:not(#_),
.kodza-sidebar__close:not(#_) {
  height: 40px;
  padding: 0 18px;
  border: 0;
  border-radius: 999px;
  font: inherit;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
}

.kodza-sidebar__toggle:not(#_) {
  background: var(--kz-sidebar-ink);
  color: var(--kz-sidebar-on-ink);
}

.kodza-sidebar__close:not(#_) {
  justify-self: end;
  background: none;
  box-shadow: inset 0 0 0 1px var(--kz-sidebar-border);
  color: var(--kz-sidebar-fg);
  transition: box-shadow 0.25s ease;
}

.kodza-sidebar__close:hover:not(#_) {
  box-shadow: inset 0 0 0 1px var(--kz-sidebar-muted);
}

.kodza-sidebar__toggle:focus-visible:not(#_),
.kodza-sidebar__close:focus-visible:not(#_) {
  outline: 2px solid var(--kz-sidebar-fg);
  outline-offset: 3px;
}

.kodza-sidebar__link:focus-visible:not(#_),
.kodza-sidebar__socials a:focus-visible:not(#_) {
  outline: 2px solid var(--kz-sidebar-fg);
  outline-offset: 3px;
}

.kodza-sidebar__panel:not(#_) {
  position: fixed;
  display: grid;
  box-sizing: border-box;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 20px 28px 28px;
  border: 0;
  background: var(--kz-sidebar-bg);
  color: var(--kz-sidebar-fg);
  font: inherit;
  transition: transform var(--kz-sidebar-duration) var(--kz-sidebar-ease);
}

.kodza-sidebar__panel:not([open]):not(#_) {
  display: none;
}

.kodza-sidebar__nav:not(#_) {
  display: flex;
}

.kodza-sidebar__link:not(#_) {
  display: flex;
  border-radius: 6px;
  color: inherit;
  text-decoration: none;
}

.kodza-sidebar__note:not(#_) {
  margin: 0;
}

.kodza-sidebar__socials:not(#_) {
  display: flex;
  margin: 0;
}

.kodza-sidebar__socials a:not(#_) {
  border-radius: 4px;
  color: var(--kz-sidebar-fg);
  font-weight: 500;
  text-decoration: none;
}

.kodza-sidebar__socials a:hover:not(#_) {
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .kodza-sidebar__panel:not(#_) {
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .kodza-sidebar__close:not(#_) {
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
  }
}
```

```js
// Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license
// Kodza — Sidebar Menu
// Opens the panel as a modal dialog and plays the slide, closes it with the animation
// (close button, Escape, a click on the page) and gives the focus back to the menu button.
// The page behind does not scroll while the panel is open.
(() => {
  const SELECTOR = '.kodza-sidebar';
  const reduceMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  // The page behind stays put while it is open: a wheel or a swipe only scrolls what can
  // scroll inside, under the pointer. Listening only while open costs nothing the rest of the time.
  const holdPage = (layer, signal) => {
    const inside = (target, x, y, dy) => {
      for (let el = target; el instanceof Element && layer.contains(el); el = el.parentElement) {
        const box = el.getBoundingClientRect();
        if (x < box.left || x > box.right || y < box.top || y > box.bottom) continue;
        if (!/(auto|scroll)/.test(getComputedStyle(el).overflowY) || el.scrollHeight <= el.clientHeight + 1) continue;
        if (dy > 0 ? el.scrollTop + el.clientHeight < el.scrollHeight - 1 : el.scrollTop > 0) return true;
      }
      return false;
    };
    let last = 0;
    const wheel = (event) => !inside(event.target, event.clientX, event.clientY, event.deltaY) && event.preventDefault();
    const touchstart = (event) => (last = event.touches[0].clientY);
    const touchmove = (event) => {
      const touch = event.touches[0];
      const dy = last - touch.clientY;
      last = touch.clientY;
      if (!inside(event.target, touch.clientX, touch.clientY, dy)) event.preventDefault();
    };
    const hold = (on) => {
      const method = on ? 'addEventListener' : 'removeEventListener';
      document[method]('wheel', wheel, { passive: false });
      document[method]('touchstart', touchstart, { passive: true });
      document[method]('touchmove', touchmove, { passive: false });
    };
    const observer = new MutationObserver(() => hold(layer.open));
    observer.observe(layer, { attributes: true, attributeFilter: ['open'] });
    // Stopped while open: the page is let go
    signal.addEventListener('abort', () => {
      observer.disconnect();
      hold(false);
    });
  };


  // One instance. Everything it starts is tied to `signal`, so kodza:destroy stops it all
  function mount(root, signal) {
    const toggle = root.querySelector('.kodza-sidebar__toggle');
    const panel = root.querySelector('.kodza-sidebar__panel');
    holdPage(panel, signal);
    if (!toggle || !panel) return;
    const close = panel.querySelector('.kodza-sidebar__close');
    panel.querySelectorAll('.kodza-sidebar__link').forEach((link, i) => {
      link.querySelectorAll('.kodza-sidebar__index, .kodza-sidebar__text').forEach((part) => part.style.setProperty('--i', i));
    });
    const duration = reduceMotion ? 0 : parseFloat(getComputedStyle(root).getPropertyValue('--kz-sidebar-duration')) * 1000 || 700;
    let timer = 0;

    const open = () => {
      clearTimeout(timer);
      if (!panel.open) {
        panel.showModal();
      }
      requestAnimationFrame(() => panel.classList.add('is-open'));
      toggle.setAttribute('aria-expanded', 'true');
    };

    const shut = () => {
      if (!panel.open || !panel.classList.contains('is-open')) return;
      panel.classList.remove('is-open');
      toggle.setAttribute('aria-expanded', 'false');
      clearTimeout(timer);
      timer = setTimeout(() => {
        panel.close();
        toggle.focus({ preventScroll: true });
      }, duration);
    };

    toggle.addEventListener('click', open, { signal });
    close?.addEventListener('click', shut, { signal });
    panel.addEventListener('cancel', (event) => {
      event.preventDefault();
      shut();
    }, { signal });
    // A click on the dimmed page (the backdrop) lands on the dialog, outside its box
    panel.addEventListener('click', (event) => {
      if (event.target === panel && event.clientX < panel.getBoundingClientRect().left) shut();
    }, { signal });

    // Stopped while open (or closing): the dialog closes and the page scrolls again
    signal.addEventListener('abort', () => {
      clearTimeout(timer);
      if (!panel.open) return;
      panel.close();
    });
  }

  // Kodza lifecycle, the same in every component: `kodza:init` starts the instances inside
  // event.detail.root (the whole page by default), `kodza:destroy` stops them and puts their
  // markup back. For themes and apps that swap content without a page load.
  const instances = new WeakMap();
  const find = (scope = document) => [scope, ...scope.querySelectorAll(SELECTOR)].filter((el) => el.matches?.(SELECTOR));
  const init = (scope) => find(scope).forEach((root) => {
    if (root.classList.contains('is-ready')) return; // already running, maybe from another copy of this script
    const controller = new AbortController();
    instances.set(root, { controller, html: root.innerHTML, attrs: [...root.attributes].map((a) => [a.name, a.value]) });
    mount(root, controller.signal);
    root.classList.add('is-ready');
  });
  const destroy = (scope) => find(scope).forEach((root) => {
    const instance = instances.get(root);
    if (!instance) return;
    instances.delete(root);
    instance.controller.abort();
    [...root.attributes].forEach((a) => root.removeAttribute(a.name));
    instance.attrs.forEach(([name, value]) => root.setAttribute(name, value));
    root.innerHTML = instance.html;
  });
  document.addEventListener('kodza:init', (event) => init(event.detail?.root));
  document.addEventListener('kodza:destroy', (event) => destroy(event.detail?.root));
  init();
  // Loaded in <head>, the script runs before the markup exists: once more when it is parsed
  if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', () => init(), { once: true });
})();
```

Free to use, from Kodza (https://kodza.dev).