# Header Classic

> A site header with a logo, links and one button: a line glides under the links, front edge first, and returns under the current page; below 900 px the links become a shutter menu.

Header · header, nav, navbar, underline, mobile menu, popover, wp_nav_menu · HTML, CSS, vanilla JS · no dependencies · updated 2026-10-28
Demo: https://kodza.dev/components/header-classic/
Source on GitHub: https://github.com/kodza-dev/kodza/tree/main/components/header-classic

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-header-classic.css`](https://kodza.dev/registry/header-classic/kodza-header-classic.css) · 32.0 KB
- [`kodza-header-classic.js`](https://kodza.dev/registry/header-classic/kodza-header-classic.js) · 14.5 KB
- [`kodza-header-classic.html`](https://kodza.dev/registry/header-classic/kodza-header-classic.html) · 1.8 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-header-classic.css https://kodza.dev/registry/header-classic/kodza-header-classic.css
curl -fsSL --create-dirs -o kodza/kodza-header-classic.js https://kodza.dev/registry/header-classic/kodza-header-classic.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-header-classic`
- Variables (set them on the root element itself: it declares its own defaults):
  - `--kz-header-classic-bg: transparent`
  - `--kz-header-classic-fg: #0a0a0a`
  - `--kz-header-classic-muted: rgba(10, 10, 10, 0.62)`
  - `--kz-header-classic-soft: rgba(10, 10, 10, 0.06)` — the Menu button
  - `--kz-header-classic-ink: #0a0a0a` — the call to action
  - `--kz-header-classic-on-ink: #ffffff`
  - `--kz-header-classic-height: 72px`
  - `--kz-header-classic-width: 1200px` — the row, centred
  - `--kz-header-classic-pad: 24px`
  - `--kz-header-classic-duration: 0.42s` — the line gliding
  - `--kz-header-classic-lag: 0.08s` — how long its back edge waits
  - `--kz-header-classic-ease: cubic-bezier(0.22, 1, 0.36, 1)`
  - `--kz-header-classic-menu-bg: #0a0a0a` — the shutter, below 900 px
  - `--kz-header-classic-menu-fg: #f2f2f0`
  - `--kz-header-classic-menu-muted: rgba(242, 242, 240, 0.62)`
  - `--kz-header-classic-menu-line: rgba(242, 242, 240, 0.16)`
  - `--kz-header-classic-menu-top: auto` — where the shutter starts; auto = the bottom of the header
  - `--kz-header-classic-menu-side: 24px`
  - `--kz-header-classic-menu-size: clamp(34px, min(10cqw, calc((100cqh - 240px) / 6)), 96px)`
  - `--kz-header-classic-menu-duration: 0.8s`
  - `--kz-header-classic-menu-ease: cubic-bezier(0.76, 0, 0.24, 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 Menu button, below 900 px (focus in `.kodza-header-classic__toggle`):
  - `Enter` / `Space`: Opens or closes the shutter
- In the shutter (focus in `.kodza-header-classic__panel a`):
  - `Escape`: Rolls it back up, focus back on Menu
  - `Tab`: Past the last link, rolls it up and goes on with the page

## 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-header-classic {
    --kz-header-classic-fg: #f2f2f0;
    --kz-header-classic-muted: rgba(242, 242, 240, 0.62);
    --kz-header-classic-soft: rgba(255, 255, 255, 0.08);
    --kz-header-classic-ink: #f2f2f0;
    --kz-header-classic-on-ink: #0a0a0a;
    --kz-header-classic-menu-bg: #f2f2f0;
    --kz-header-classic-menu-fg: #0a0a0a;
    --kz-header-classic-menu-muted: rgba(10, 10, 10, 0.62);
    --kz-header-classic-menu-line: rgba(10, 10, 10, 0.14);
  }
}
```

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

Every colour is a variable on the header: set --kz-header-classic-fg, -muted, -soft, -ink and -on-ink for a light bar on a dark site (the demo's dark band has the recipe). The shutter has its own --kz-header-classic-menu-* set (bg, fg, muted, line), so it can stay dark or turn to paper.

## Use it

### Plain HTML page

- CSS: `kodza/kodza-header-classic.css` next to the page (the Files commands as they are), linked in `<head>`: `<link rel="stylesheet" href="kodza/kodza-header-classic.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.
- Where it goes, step by step. (1) At the top of the page, as its only header: it fills the width it is given and centres its row at --kz-header-classic-width. (2) Put the logo in the first link, your main pages in the nav (five or six fit), and mark the current one with aria-current="page": the line rests under it, and none means no line at rest. (3) The call to action goes in the end block; below 520 px only the Menu button stays. (4) Nothing to write for phones: the shutter lists the same links, numbered, with the call to action and your socials under them.
- JS: `kodza/kodza-header-classic.js`, loaded with `<script src="kodza/kodza-header-classic.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$/{r kodza/kodza-header-classic.css' -e 'd' -e '}' -e '/^KODZA-JS$/{r kodza/kodza-header-classic.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.
- Where it goes, step by step. (1) At the top of the page, as its only header: it fills the width it is given and centres its row at --kz-header-classic-width. (2) Put the logo in the first link, your main pages in the nav (five or six fit), and mark the current one with aria-current="page": the line rests under it, and none means no line at rest. (3) The call to action goes in the end block; below 520 px only the Menu button stays. (4) Nothing to write for phones: the shutter lists the same links, numbered, with the call to action and your socials under them.

### 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 spans the page: a block theme keeps a Custom HTML block to the width of the text column, so put it inside a **Group** block set to **Full width**, with **Inner blocks use content width** turned off.
- 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-header-classic', $uri . 'kodza-header-classic.css', [], filemtime($dir . 'kodza-header-classic.css'));
    wp_enqueue_script('kodza-header-classic', $uri . 'kodza-header-classic.js', [], filemtime($dir . 'kodza-header-classic.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: it takes the colour of the text around it (or keeps its own monochrome): nothing to point at the theme.
- WordPress turns straight quotes and `--` into typographic ones in the text of a Custom HTML block (not inside `<code>` or `<pre>`).
- Put it in the site header (Site Editor → Patterns → Header, or the theme's header.php) in place of the theme's own header. The links can come from wp_nav_menu(['theme_location' => 'primary', 'container' => false, 'items_wrap' => '%3$s']) inside the ul, with the link class added by the nav_menu_link_attributes filter; WordPress already writes aria-current="page" on the current one, and the line starts there. The shutter is written from those links: nothing else to fill.

#### With Elementor

- HTML: an **HTML** widget (Elementor shows it to administrators only). It keeps the code exactly as pasted, straight quotes included.
- This one spans the page: give the widget its own container, **Content Width: Full Width**, padding 0.
- 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-header-classic.css` and `assets/kodza-header-classic.js` (the Files commands with `-o assets/…`).
- In the section: `{{ 'kodza-header-classic.css' | asset_url | stylesheet_tag }}` and `<script src="{{ 'kodza-header-classic.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`.
- Where it goes, step by step. (1) At the top of the page, as its only header: it fills the width it is given and centres its row at --kz-header-classic-width. (2) Put the logo in the first link, your main pages in the nav (five or six fit), and mark the current one with aria-current="page": the line rests under it, and none means no line at rest. (3) The call to action goes in the end block; below 520 px only the Menu button stays. (4) Nothing to write for phones: the shutter lists the same links, numbered, with the call to action and your socials under them.

### React / Next.js

- Files, side by side (e.g. in `components/kodza/`): `HeaderClassic.tsx` (below), the CSS block under Code saved as `header-classic.css` and the JS block as `header-classic.js`, both as they are. The HTML block is already inside the component: skip it.
- Use it: `import { HeaderClassic } from '@/components/kodza/HeaderClassic';` then `<HeaderClassic />`. Props: `vars` (the `--kz-…` variables listed under API, e.g. `vars={{ '--kz-header-classic-bg': … }}`), `className`, `style` and the other props of its `<header>` (`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 './header-classic.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.
- Built from your data (tabs, rows, options)? Add what the markup is made of to the `key`, as plain values (ids, text, numbers). What the visitor changes (the open tab, the sort, what they type) is the script's: follow it with `onClick` or `onInput` on the root, and change it from your code as a visitor would (click the tab; set the field's value, then dispatch a bubbling `input` event). Fields stay uncontrolled (`defaultValue`, `name`).

```tsx
'use client';
// Kodza — Header Classic, for React. From https://kodza.dev/components/header-classic/
// 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: header-classic.css and header-classic.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.
// Built from your data (tabs, rows, options)? Put what the markup is made of in the key, as plain
// values (ids, text, numbers): a change starts the script again on fresh markup. What the visitor
// changes (the open tab, the sort, what they type) is the script's: keep it out of the key, follow
// it with onClick or onInput on the root, and change it from your code as a visitor would (click
// the tab; set the field's value, then dispatch a bubbling input event).
import { useRef, useEffect, type ComponentPropsWithoutRef, type ComponentRef, type CSSProperties } from 'react';
import './header-classic.css';

export type HeaderClassicProps = Omit<ComponentPropsWithoutRef<'header'>, "children" | "vars"> & {
  /** Settings, as CSS variables on the root */
  vars?: {
    /** default: transparent */
    "--kz-header-classic-bg"?: string | number;
    /** default: #0a0a0a */
    "--kz-header-classic-fg"?: string | number;
    /** default: rgba(10, 10, 10, 0.62) */
    "--kz-header-classic-muted"?: string | number;
    /** the Menu button — default: rgba(10, 10, 10, 0.06) */
    "--kz-header-classic-soft"?: string | number;
    /** the call to action — default: #0a0a0a */
    "--kz-header-classic-ink"?: string | number;
    /** default: #ffffff */
    "--kz-header-classic-on-ink"?: string | number;
    /** default: 72px */
    "--kz-header-classic-height"?: string | number;
    /** the row, centred — default: 1200px */
    "--kz-header-classic-width"?: string | number;
    /** default: 24px */
    "--kz-header-classic-pad"?: string | number;
    /** the line gliding — default: 0.42s */
    "--kz-header-classic-duration"?: string | number;
    /** how long its back edge waits — default: 0.08s */
    "--kz-header-classic-lag"?: string | number;
    /** default: cubic-bezier(0.22, 1, 0.36, 1) */
    "--kz-header-classic-ease"?: string | number;
    /** the shutter, below 900 px — default: #0a0a0a */
    "--kz-header-classic-menu-bg"?: string | number;
    /** default: #f2f2f0 */
    "--kz-header-classic-menu-fg"?: string | number;
    /** default: rgba(242, 242, 240, 0.62) */
    "--kz-header-classic-menu-muted"?: string | number;
    /** default: rgba(242, 242, 240, 0.16) */
    "--kz-header-classic-menu-line"?: string | number;
    /** where the shutter starts; auto = the bottom of the header — default: auto */
    "--kz-header-classic-menu-top"?: string | number;
    /** default: 24px */
    "--kz-header-classic-menu-side"?: string | number;
    /** default: clamp(34px, min(10cqw, calc((100cqh - 240px) / 6)), 96px) */
    "--kz-header-classic-menu-size"?: string | number;
    /** default: 0.8s */
    "--kz-header-classic-menu-duration"?: string | number;
    /** default: cubic-bezier(0.76, 0, 0.24, 1) */
    "--kz-header-classic-menu-ease"?: string | number;
  };
  className?: string;
};

export function HeaderClassic({ vars, className, style, ...rest }: HeaderClassicProps) {
  const ref = useRef<ComponentRef<'header'>>(null);
  const classes = ["kodza-header-classic", 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('./header-classic.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 (
    <header key={key} {...rest} className={classes} style={{ ...vars, ...style } as CSSProperties} ref={ref}>
      <div className="kodza-header-classic__row">
        <a className="kodza-header-classic__logo" href="#" aria-label="Pier, home">
          <svg viewBox="0 0 24 22" width="22" height="20" aria-hidden="true">
            <path d="M1 6h22v3.5H1z" />
            <path d="M3.5 11.5h3V21h-3zM10.5 11.5h3V21h-3zM17.5 11.5h3V21h-3z" />
          </svg>
          <span>pier</span>
        </a>
        <nav className="kodza-header-classic__menu" aria-label="Main">
          <ul className="kodza-header-classic__links">
            <li>
              <a className="kodza-header-classic__link" href="#" aria-current="page">Work</a>
            </li>
            <li>
              <a className="kodza-header-classic__link" href="#">Services</a>
            </li>
            <li>
              <a className="kodza-header-classic__link" href="#">Studio</a>
            </li>
            <li>
              <a className="kodza-header-classic__link" href="#">Journal</a>
            </li>
            <li>
              <a className="kodza-header-classic__link" href="#">Contact</a>
            </li>
          </ul>
          <span className="kodza-header-classic__line" aria-hidden="true" />
        </nav>
        <div className="kodza-header-classic__end">
          <a className="kodza-header-classic__cta" href="#">Start a project</a>
          {' '}
          <button className="kodza-header-classic__toggle" type="button" aria-expanded="false">
            <span className="kodza-header-classic__lines" aria-hidden="true" />
            <span className="kodza-header-classic__label">
              <span className="kodza-header-classic__say">Menu</span>
              <span className="kodza-header-classic__say" aria-hidden="true">Close</span>
            </span>
          </button>
          <div className="kodza-header-classic__panel" popover="" aria-label="Menu">
            <nav className="kodza-header-classic__list" aria-label="Main" />
            <div className="kodza-header-classic__info">
              <p className="kodza-header-classic__more">
                <a className="kodza-header-classic__action" href="#">Start a project</a>
              </p>
              <p className="kodza-header-classic__socials">
                <a href="#">GitHub</a>
                <a href="#">X</a>
                <a href="#">RSS</a>
              </p>
            </div>
          </div>
        </div>
      </div>
    </header>
  );
}
```

- Where it goes, step by step. (1) At the top of the page, as its only header: it fills the width it is given and centres its row at --kz-header-classic-width. (2) Put the logo in the first link, your main pages in the nav (five or six fit), and mark the current one with aria-current="page": the line rests under it, and none means no line at rest. (3) The call to action goes in the end block; below 520 px only the Menu button stays. (4) Nothing to write for phones: the shutter lists the same links, numbered, with the call to action and your socials under them.

## Code

```html
<header class="kodza-header-classic">
  <div class="kodza-header-classic__row">
    <a class="kodza-header-classic__logo" href="#" aria-label="Pier, home"><svg viewBox="0 0 24 22" width="22" height="20" aria-hidden="true"><path d="M1 6h22v3.5H1z"/><path d="M3.5 11.5h3V21h-3zM10.5 11.5h3V21h-3zM17.5 11.5h3V21h-3z"/></svg><span>pier</span></a>
    <nav class="kodza-header-classic__menu" aria-label="Main">
      <ul class="kodza-header-classic__links">
        <li><a class="kodza-header-classic__link" href="#" aria-current="page">Work</a></li>
        <li><a class="kodza-header-classic__link" href="#">Services</a></li>
        <li><a class="kodza-header-classic__link" href="#">Studio</a></li>
        <li><a class="kodza-header-classic__link" href="#">Journal</a></li>
        <li><a class="kodza-header-classic__link" href="#">Contact</a></li>
      </ul>
      <span class="kodza-header-classic__line" aria-hidden="true"></span>
    </nav>
    <div class="kodza-header-classic__end">
      <a class="kodza-header-classic__cta" href="#">Start a project</a>
      <button class="kodza-header-classic__toggle" type="button" aria-expanded="false"><span class="kodza-header-classic__lines" aria-hidden="true"></span><span class="kodza-header-classic__label"><span class="kodza-header-classic__say">Menu</span><span class="kodza-header-classic__say" aria-hidden="true">Close</span></span></button>
      <div class="kodza-header-classic__panel" popover aria-label="Menu">
        <nav class="kodza-header-classic__list" aria-label="Main"></nav>
        <div class="kodza-header-classic__info">
          <p class="kodza-header-classic__more"><a class="kodza-header-classic__action" href="#">Start a project</a></p>
          <p class="kodza-header-classic__socials"><a href="#">GitHub</a><a href="#">X</a><a href="#">RSS</a></p>
        </div>
      </div>
    </div>
  </div>
</header>
```

```css
/* Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license */
/* Kodza — Header Classic
   The header you paste everywhere: logo on the left, links in the middle, a pill on the right.
   One line glides under the links, its front edge first and the back one catching up, and goes
   back to the page you are on when the pointer leaves. Below 900 px the links give way to a Menu
   button and a shutter that comes down under the header, written from the same links.
   Everything is tuned with the --kz-header-classic-* variables (--kz-header-classic-menu-* for
   the shutter). */
.kodza-header-classic {
  --kz-header-classic-bg: transparent;
  --kz-header-classic-fg: #0a0a0a;
  --kz-header-classic-muted: rgba(10, 10, 10, 0.62);
  --kz-header-classic-soft: rgba(10, 10, 10, 0.06); /* the Menu button */
  --kz-header-classic-ink: #0a0a0a; /* the call to action */
  --kz-header-classic-on-ink: #ffffff;
  --kz-header-classic-height: 72px;
  --kz-header-classic-width: 1200px; /* the row, centred */
  --kz-header-classic-pad: 24px;
  --kz-header-classic-duration: 0.42s; /* the line gliding */
  --kz-header-classic-lag: 0.08s; /* how long its back edge waits */
  --kz-header-classic-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --kz-header-classic-menu-bg: #0a0a0a; /* the shutter, below 900 px */
  --kz-header-classic-menu-fg: #f2f2f0;
  --kz-header-classic-menu-muted: rgba(242, 242, 240, 0.62);
  --kz-header-classic-menu-line: rgba(242, 242, 240, 0.16);
  --kz-header-classic-menu-top: auto; /* where the shutter starts; auto = the bottom of the header */
  --kz-header-classic-menu-side: 24px;
  --kz-header-classic-menu-size: clamp(34px, min(10cqw, calc((100cqh - 240px) / 6)), 96px);
  --kz-header-classic-menu-duration: 0.8s;
  --kz-header-classic-menu-ease: cubic-bezier(0.76, 0, 0.24, 1);

  position: relative;
  z-index: 60;
  display: block;
  box-sizing: border-box;
  width: 100%;
  margin: 0;
  padding: 0;
  background: var(--kz-header-classic-bg);
  color: var(--kz-header-classic-fg);
  font-size: 15px;
  line-height: 1.4;
  text-align: left;
  container-type: inline-size;
}

/* Three columns, the middle one as wide as the links: they sit in the true centre, whatever the
   width of the logo and of the button */
.kodza-header-classic__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  box-sizing: border-box;
  max-width: var(--kz-header-classic-width);
  height: var(--kz-header-classic-height);
  margin: 0 auto;
  padding: 0 var(--kz-header-classic-pad);
}

.kodza-header-classic__logo {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  gap: 8px;
  height: 40px;
  margin: 0;
  border-radius: 6px;
  color: inherit;
  font-size: 18px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.kodza-header-classic__logo svg {
  display: block;
  flex: none;
  fill: currentColor;
}

.kodza-header-classic__menu {
  position: relative;
  display: block;
  margin: 0;
  padding: 0;
}

.kodza-header-classic__links {
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.kodza-header-classic__links > li {
  display: block;
  margin: 0;
  padding: 0;
  list-style: none;
}

.kodza-header-classic__link {
  display: inline-flex;
  align-items: center;
  box-sizing: border-box;
  height: 40px;
  margin: 0;
  padding: 0 14px;
  border-radius: 8px;
  color: var(--kz-header-classic-muted);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s;
}

.kodza-header-classic__link:hover,
.kodza-header-classic__link:focus-visible,
.kodza-header-classic__link[aria-current="page"] {
  color: var(--kz-header-classic-fg);
}

.kodza-header-classic__link:focus-visible,
.kodza-header-classic__logo:focus-visible {
  outline: 2px solid var(--kz-header-classic-fg);
  outline-offset: 2px;
}

/* The one line under the links. The script sets its two ends; each end has its own transition,
   so the end in front leaves first and the other catches up */
/* The line spans the nav; each edge is its own clip, so the back one can wait for the front.
   The script writes where the edges go */
.kodza-header-classic__line {
  position: absolute;
  bottom: 8px;
  left: 0;
  right: 0;
  height: 1.5px;
  clip-path: inset(0 0 0 var(--kz-header-classic-line-left, 0px));
  pointer-events: none;
}

.kodza-header-classic__line::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 1px;
  background: var(--kz-header-classic-fg);
  clip-path: inset(0 var(--kz-header-classic-line-right, 100%) 0 0);
}

.kodza-header-classic.is-ready .kodza-header-classic__line,
.kodza-header-classic.is-ready .kodza-header-classic__line::after {
  transition: clip-path var(--kz-header-classic-duration) var(--kz-header-classic-ease);
}

.kodza-header-classic.is-ready .kodza-header-classic__line.is-rightward,
.kodza-header-classic.is-ready .kodza-header-classic__line.is-leftward::after {
  transition-delay: var(--kz-header-classic-lag);
}

.kodza-header-classic.is-ready .kodza-header-classic__line.is-instant,
.kodza-header-classic.is-ready .kodza-header-classic__line.is-instant::after {
  transition: none;
}

.kodza-header-classic__end {
  display: flex;
  grid-column: 3;
  align-items: center;
  justify-self: end;
  gap: 8px;
  margin: 0;
}

.kodza-header-classic__cta {
  display: inline-flex;
  align-items: center;
  box-sizing: border-box;
  height: 40px;
  margin: 0;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--kz-header-classic-ink);
  color: var(--kz-header-classic-on-ink);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.2s;
}

@media (hover: hover) {
  .kodza-header-classic__cta:hover {
    background: color-mix(in srgb, var(--kz-header-classic-ink) 84%, transparent);
  }
}

.kodza-header-classic__cta:focus-visible {
  outline: 2px solid var(--kz-header-classic-ink);
  outline-offset: 3px;
}

/* The Menu button: two lines meet, then cross; the label rolls without changing the width */
.kodza-header-classic__toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-sizing: border-box;
  height: 40px;
  margin: 0;
  padding: 0 18px 0 16px;
  border: 0;
  border-radius: 999px;
  background: var(--kz-header-classic-soft);
  color: var(--kz-header-classic-fg);
  font: inherit;
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.01em;
  white-space: nowrap;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.kodza-header-classic__toggle:focus-visible {
  outline: 2px solid var(--kz-header-classic-fg);
  outline-offset: 3px;
}

.kodza-header-classic__lines {
  position: relative;
  flex: none;
  width: 14px;
  height: 8px;
}

.kodza-header-classic__lines::before,
.kodza-header-classic__lines::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  border-radius: 1px;
  background: currentColor;
  /* On its own layer: drawn the same way at rest and while turning, so no snap at the end */
  will-change: transform;
  /* Closing: they uncross first, then part */
  transition:
    rotate 0.22s cubic-bezier(0.65, 0, 0.35, 1),
    translate 0.22s cubic-bezier(0.65, 0, 0.35, 1) 0.18s,
    clip-path 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.kodza-header-classic__lines::before {
  top: 0;
}

.kodza-header-classic__lines::after {
  top: 6px; /* whole pixels: both lines sit on the pixel grid the same way */
}

/* Whole at rest, as an inset: the pointer slides it to a shorter one (from none it would jump) */
.kodza-header-classic__lines::after {
  clip-path: inset(0 0 0 0);
}

.kodza-header-classic__toggle:hover .kodza-header-classic__lines::after {
  clip-path: inset(0 45% 0 0);
}

.kodza-header-classic__toggle[aria-expanded="true"] .kodza-header-classic__lines::before,
.kodza-header-classic__toggle[aria-expanded="true"] .kodza-header-classic__lines::after {
  clip-path: inset(0 0 0 0);
  transition:
    translate 0.2s cubic-bezier(0.65, 0, 0.35, 1),
    rotate 0.3s cubic-bezier(0.22, 1, 0.36, 1) 0.17s,
    clip-path 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

.kodza-header-classic__toggle[aria-expanded="true"] .kodza-header-classic__lines::before {
  translate: 0 3px;
  rotate: 45deg;
}

.kodza-header-classic__toggle[aria-expanded="true"] .kodza-header-classic__lines::after {
  translate: 0 -3px;
  rotate: -45deg;
}

.kodza-header-classic__label {
  display: grid;
  margin: -3px 0;
  padding: 3px 0;
  overflow: hidden;
}

/* The script rolls the words both ways: the old one goes up, the new one comes up from below */
.kodza-header-classic__say {
  grid-area: 1 / 1;
}

.kodza-header-classic__say + .kodza-header-classic__say {
  translate: 0 115%;
}

.kodza-header-classic__toggle[aria-expanded="true"] .kodza-header-classic__say {
  translate: 0 -115%;
}

.kodza-header-classic__toggle[aria-expanded="true"] .kodza-header-classic__say + .kodza-header-classic__say {
  translate: 0 0;
}

/* The shutter: from the bottom of the header to the bottom of the screen, rolled up until it
   opens. A native popover, so Escape, a click outside and the focus going back to Menu are the
   browser's own */
.kodza-header-classic__panel {
  position: fixed;
  inset: var(--kz-header-classic-from, 0px) 0 0 0;
  box-sizing: border-box;
  width: 100%;
  height: auto;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 0 var(--kz-header-classic-menu-side);
  border: 0;
  overflow: hidden auto;
  overscroll-behavior: contain;
  background: var(--kz-header-classic-menu-bg);
  color: var(--kz-header-classic-menu-fg);
  font: inherit;
  font-size: 15px;
  line-height: 1.4;
  text-align: left;
  container-type: size;
  z-index: 99990;
  /* Here and not on the open state: the panel keeps its rows while it rolls back up */
  grid-template-rows: 1fr auto;
  -webkit-font-smoothing: antialiased;
  clip-path: inset(0 0 100% 0);
  /* Closing: quicker than it came down */
  transition:
    clip-path calc(var(--kz-header-classic-menu-duration) * 0.7) var(--kz-header-classic-menu-ease),
    display calc(var(--kz-header-classic-menu-duration) * 0.7) allow-discrete,
    overlay calc(var(--kz-header-classic-menu-duration) * 0.7) allow-discrete;
}

.kodza-header-classic__panel:popover-open {
  display: grid;
  clip-path: inset(0 0 0 0);
  transition:
    clip-path var(--kz-header-classic-menu-duration) var(--kz-header-classic-menu-ease),
    display var(--kz-header-classic-menu-duration) allow-discrete,
    overlay var(--kz-header-classic-menu-duration) allow-discrete;
}

@starting-style {
  .kodza-header-classic__panel:popover-open {
    clip-path: inset(0 0 100% 0);
  }
}

.kodza-header-classic__list {
  align-self: center;
  display: grid;
  margin: 0;
  padding: 28px 0;
}

/* Each row: its hairline draws in, then the word rises from its mask */
.kodza-header-classic__item {
  position: relative;
  display: grid;
  grid-template-columns: clamp(44px, 9cqw, 132px) minmax(0, 1fr);
  align-items: start;
  margin: 0;
  padding: 14px 0 10px;
  color: inherit;
  text-decoration: none;
  outline: none;
}

.kodza-header-classic__item::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: var(--kz-header-classic-menu-line);
  scale: 0 1;
  transform-origin: left center;
  transition: scale 0.3s cubic-bezier(0.65, 0, 0.35, 1);
}

.kodza-header-classic__index {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 0.4em;
  font-family: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px;
  line-height: 1.4;
  color: var(--kz-header-classic-menu-muted);
  opacity: 0;
  transition: opacity 0.2s, color 0.25s;
}

/* The page you are on: its number lights up, with a dot */
.kodza-header-classic__item[aria-current="page"] .kodza-header-classic__index {
  color: var(--kz-header-classic-menu-fg);
}

.kodza-header-classic__item[aria-current="page"] .kodza-header-classic__index::after {
  content: "";
  flex: none;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}

/* The mask has the size of its word, so its room for descenders (g, j, p, q, y) and its step
   aside are measured on the word */
.kodza-header-classic__mask {
  display: block;
  margin: -0.06em 0 -0.24em;
  padding: 0.06em 0 0.24em;
  overflow: hidden;
  font-size: var(--kz-header-classic-menu-size);
  transition: translate 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.kodza-header-classic__word {
  display: block;
  font-size: var(--kz-header-classic-menu-size);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.045em;
  translate: 0 135%;
  /* Closing: the words drop back into their masks while the shutter rolls up */
  transition: translate 0.32s cubic-bezier(0.65, 0, 0.35, 1);
}

.kodza-header-classic__info {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding: 16px 0 22px;
  border-top: 1px solid var(--kz-header-classic-menu-line);
  opacity: 0;
  translate: 0 8px;
  transition: opacity 0.2s, translate 0.3s cubic-bezier(0.65, 0, 0.35, 1);
}

.kodza-header-classic__info p {
  margin: 0;
}

.kodza-header-classic__action {
  display: inline-flex;
  align-items: center;
  box-sizing: border-box;
  height: 40px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--kz-header-classic-menu-fg);
  color: var(--kz-header-classic-menu-bg);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
}

.kodza-header-classic__action:focus-visible {
  outline: 2px solid var(--kz-header-classic-menu-fg);
  outline-offset: 3px;
}

.kodza-header-classic__socials {
  display: flex;
  gap: 20px;
  font-family: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px;
  line-height: 1.4;
  color: var(--kz-header-classic-menu-muted);
}

.kodza-header-classic__socials a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

/* Open: each part starts when the edge reaches it (the script sets --kz-header-classic-delay) */
.kodza-header-classic__panel.is-open .kodza-header-classic__item::before {
  scale: 1 1;
  transition: scale 0.9s cubic-bezier(0.22, 1, 0.36, 1) var(--kz-header-classic-delay, 0s);
}

.kodza-header-classic__panel.is-open .kodza-header-classic__index {
  opacity: 1;
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1) calc(var(--kz-header-classic-delay, 0s) + 0.12s), color 0.25s;
}

.kodza-header-classic__panel.is-open .kodza-header-classic__word {
  translate: 0 0;
  transition: translate 0.75s cubic-bezier(0.22, 1, 0.36, 1) var(--kz-header-classic-delay, 0s);
}

.kodza-header-classic__panel.is-open .kodza-header-classic__info {
  opacity: 1;
  translate: 0 0;
  transition:
    opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1) var(--kz-header-classic-delay, 0s),
    translate 0.7s cubic-bezier(0.22, 1, 0.36, 1) var(--kz-header-classic-delay, 0s);
}

/* Pointed at: the word steps aside and its number lights up */
.kodza-header-classic__item:hover .kodza-header-classic__mask,
.kodza-header-classic__item:focus-visible .kodza-header-classic__mask {
  translate: 0.14em 0;
}

.kodza-header-classic__item:hover .kodza-header-classic__index,
.kodza-header-classic__item:focus-visible .kodza-header-classic__index,
.kodza-header-classic__socials a:hover {
  color: var(--kz-header-classic-menu-fg);
}

.kodza-header-classic__item:focus-visible .kodza-header-classic__word {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.12em;
}

.kodza-header-classic__socials a:focus-visible {
  outline: 2px solid var(--kz-header-classic-menu-fg);
  outline-offset: 4px;
}

/* Below 900 px the links give way to the Menu button; below 520 px only Menu stays */
@container (max-width: 899px) {
  .kodza-header-classic__menu {
    display: none;
  }
}

@container (min-width: 900px) {
  .kodza-header-classic__toggle {
    display: none;
  }
}

@container (max-width: 519px) {
  .kodza-header-classic__row {
    padding: 0 16px;
  }

  .kodza-header-classic__cta {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .kodza-header-classic.is-ready .kodza-header-classic__line,
  .kodza-header-classic.is-ready .kodza-header-classic__line::after,
  .kodza-header-classic__panel,
  .kodza-header-classic__panel *,
  .kodza-header-classic__panel *::before,
  .kodza-header-classic__toggle *,
  .kodza-header-classic__toggle *::before,
  .kodza-header-classic__toggle *::after {
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
  }
}

/* kodza-guard 1767508bac35 — 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-header-classic__logo):not(#_),
:where(.kodza-header-classic__link):not(#_),
:where(.kodza-header-classic__cta):not(#_),
:where(.kodza-header-classic__toggle):not(#_),
:where(.kodza-header-classic__socials a:where(:not([class*="kodza-"]))):not(#_) {
  outline: revert;
  outline-offset: revert;
}

:where(.kodza-header-classic__list):not(#_),
:where(.kodza-header-classic__item):not(#_),
:where(.kodza-header-classic__more):not(#_),
:where(.kodza-header-classic__socials):not(#_) {
  transition-duration: revert;
  transition-delay: revert;
}

:where(.kodza-header-classic__action):not(#_) {
  outline: revert;
  outline-offset: revert;
  transition-duration: revert;
  transition-delay: revert;
}

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

.kodza-header-classic:not(#_) {
  border: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  transition: revert;
  list-style: revert;
  box-shadow: revert;
  outline-offset: revert;
  appearance: revert;
  max-height: revert;
  font-family: revert;
  font-weight: revert;
  font-style: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
}

.kodza-header-classic__logo:not(#_) {
  border: 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-style: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
}

.kodza-header-classic__menu:not(#_) {
  border: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  transition: revert;
  list-style: revert;
  box-sizing: revert;
  float: 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-header-classic__links:not(#_),
.kodza-header-classic__links li:where(:not([class*="kodza-"]):not(.kodza-header-classic__links [class*="kodza-"] *)):not(#_) {
  border: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  transition: 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-header-classic__link:not(#_) {
  border: revert;
  list-style: 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-style: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
}

.kodza-header-classic__line:not(#_),
.kodza-header-classic__end:not(#_),
.kodza-header-classic__lines:not(#_),
.kodza-header-classic__label:not(#_),
.kodza-header-classic__say:not(#_),
.kodza-header-classic__index:not(#_),
.kodza-header-classic__mask:not(#_),
.kodza-header-classic__word:not(#_),
.kodza-header-classic__info:not(#_),
.kodza-header-classic__logo span:where(:not([class*="kodza-"])):not(#_) {
  box-sizing: revert;
}

.kodza-header-classic__cta:not(#_) {
  border: revert;
  list-style: revert;
  float: revert;
  position: revert;
  box-shadow: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  font-family: revert;
  font-style: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
}

.kodza-header-classic__toggle:not(#_) {
  text-decoration: revert;
  transition: revert;
  list-style: revert;
  float: revert;
  position: revert;
  box-shadow: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
  min-height: revert;
}

.kodza-header-classic__list:not(#_) {
  border: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: 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;
  transition-property: revert;
  transition-timing-function: revert;
}

.kodza-header-classic__item:not(#_) {
  border: revert;
  border-radius: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  background-color: revert;
  background-image: revert;
  box-shadow: revert;
  outline-offset: 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;
  transition-property: revert;
  transition-timing-function: revert;
}

.kodza-header-classic__more:not(#_) {
  border: revert;
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: 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;
  transition-property: revert;
  transition-timing-function: revert;
}

.kodza-header-classic__action:not(#_) {
  border: revert;
  margin: revert;
  list-style: revert;
  float: revert;
  position: revert;
  box-shadow: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  font-family: revert;
  font-style: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
  transition-property: revert;
  transition-timing-function: revert;
}

.kodza-header-classic__socials:not(#_) {
  border: revert;
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: 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;
  font-weight: revert;
  font-style: revert;
  letter-spacing: revert;
  text-transform: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
  transition-property: revert;
  transition-timing-function: revert;
}

.kodza-header-classic__logo svg:where(:not([class*="kodza-"])):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-header-classic__socials a:where(:not([class*="kodza-"])):not(#_) {
  border: revert;
  margin: revert;
  padding: revert;
  border-radius: 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-header-classic__more:not(#_):where(:not([hidden])),
.kodza-header-classic__socials a:where(:not([class*="kodza-"])):not(#_):where(:not([hidden])) {
  display: revert;
}

.kodza-header-classic__more:not(#_):where([hidden]),
.kodza-header-classic__socials a:where(:not([class*="kodza-"])):not(#_):where([hidden]) {
  display: none;
}

.kodza-header-classic__line:not(#_)::after,
.kodza-header-classic__lines:not(#_)::before,
.kodza-header-classic__lines:not(#_)::after,
.kodza-header-classic__item:not(#_)::before,
.kodza-header-classic__index:not(#_)::after {
  box-sizing: revert;
}

/* 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-header-classic:not(#_) {
  position: relative;
  display: block;
  box-sizing: border-box;
  padding: 0;
  background: var(--kz-header-classic-bg);
  color: var(--kz-header-classic-fg);
  font-size: 15px;
  line-height: 1.4;
  text-align: left;
}

.kodza-header-classic__logo:not(#_) {
  display: inline-flex;
  margin: 0;
  border-radius: 6px;
  color: inherit;
  font-size: 18px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.kodza-header-classic__logo svg:not(#_) {
  display: block;
}

.kodza-header-classic__menu:not(#_) {
  position: relative;
  display: block;
  margin: 0;
  padding: 0;
}

.kodza-header-classic__links:not(#_) {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
}

.kodza-header-classic__links > li:not(#_) {
  display: block;
  margin: 0;
  padding: 0;
  list-style: none;
}

.kodza-header-classic__link:not(#_) {
  display: inline-flex;
  box-sizing: border-box;
  margin: 0;
  padding: 0 14px;
  border-radius: 8px;
  color: var(--kz-header-classic-muted);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.01em;
  text-decoration: none;
  transition: color 0.2s;
}

.kodza-header-classic__link:hover:not(#_),
.kodza-header-classic__link:focus-visible:not(#_),
.kodza-header-classic__link[aria-current="page"]:not(#_) {
  color: var(--kz-header-classic-fg);
}

.kodza-header-classic__link:focus-visible:not(#_),
.kodza-header-classic__logo:focus-visible:not(#_) {
  outline: 2px solid var(--kz-header-classic-fg);
  outline-offset: 2px;
}

.kodza-header-classic__cta:not(#_) {
  display: inline-flex;
  box-sizing: border-box;
  margin: 0;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--kz-header-classic-ink);
  color: var(--kz-header-classic-on-ink);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.01em;
  text-decoration: none;
  transition: background-color 0.2s;
}

@media (hover: hover) {
  .kodza-header-classic__cta:hover:not(#_) {
    background: color-mix(in srgb, var(--kz-header-classic-ink) 84%, transparent);
  }
}

.kodza-header-classic__cta:focus-visible:not(#_) {
  outline: 2px solid var(--kz-header-classic-ink);
  outline-offset: 3px;
}

.kodza-header-classic__toggle:not(#_) {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-sizing: border-box;
  height: 40px;
  margin: 0;
  padding: 0 18px 0 16px;
  border: 0;
  border-radius: 999px;
  background: var(--kz-header-classic-soft);
  color: var(--kz-header-classic-fg);
  font: inherit;
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.01em;
  white-space: nowrap;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.kodza-header-classic__toggle:focus-visible:not(#_) {
  outline: 2px solid var(--kz-header-classic-fg);
  outline-offset: 3px;
}

.kodza-header-classic__list:not(#_) {
  display: grid;
  margin: 0;
  padding: 28px 0;
}

.kodza-header-classic__item:not(#_) {
  position: relative;
  display: grid;
  margin: 0;
  padding: 14px 0 10px;
  color: inherit;
  text-decoration: none;
  outline: none;
}

.kodza-header-classic__info p:not(#_) {
  margin: 0;
}

.kodza-header-classic__action:not(#_) {
  display: inline-flex;
  box-sizing: border-box;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--kz-header-classic-menu-fg);
  color: var(--kz-header-classic-menu-bg);
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.kodza-header-classic__action:focus-visible:not(#_) {
  outline: 2px solid var(--kz-header-classic-menu-fg);
  outline-offset: 3px;
}

.kodza-header-classic__socials:not(#_) {
  display: flex;
  font-family: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px;
  line-height: 1.4;
  color: var(--kz-header-classic-menu-muted);
}

.kodza-header-classic__socials a:not(#_) {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.kodza-header-classic__socials a:hover:not(#_) {
  color: var(--kz-header-classic-menu-fg);
}

.kodza-header-classic__socials a:focus-visible:not(#_) {
  outline: 2px solid var(--kz-header-classic-menu-fg);
  outline-offset: 4px;
}

@container (max-width: 899px) {
  .kodza-header-classic__menu:not(#_) {
    display: none;
  }
}

@container (min-width: 900px) {
  .kodza-header-classic__toggle:not(#_) {
    display: none;
  }
}

@container (max-width: 519px) {
  .kodza-header-classic__cta:not(#_) {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .kodza-header-classic__panel *:where(nav, a, p):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 — Header Classic
// One line under the links: it glides to the link you point at, its front edge first and the
// back one catching up, and goes back under the page you are on (aria-current="page") when the
// pointer leaves. Below 900 px the links give way to a Menu button: the shutter (a native
// popover) comes down under the header, written by the script from the same links, so a menu
// changed in the CMS changes both.
(() => {
  const SELECTOR = '.kodza-header-classic';
  const reduceMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  const c = (name) => `.kodza-header-classic__${name}`;

  // When (0 to 1 of the duration) a cubic-bezier curve gets to the progress p
  const timeAt = ([x1, y1, x2, y2], p) => {
    const at = (a, b, s) => 3 * a * s * (1 - s) ** 2 + 3 * b * s * s * (1 - s) + s ** 3;
    let lo = 0;
    let hi = 1;
    for (let i = 0; i < 24; i++) {
      const mid = (lo + hi) / 2;
      if (at(y1, y2, mid) < p) lo = mid;
      else hi = mid;
    }
    return at(x1, x2, (lo + hi) / 2);
  };

  // A wheel or a swipe only scrolls what can scroll in the panel, under the pointer
  const scrollsInside = (panel, target, x, y, dy) => {
    for (let el = target; el instanceof Element && panel.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;
  };

  // One instance, with its own state: two copies on a page never interfere. Everything it
  // starts is tied to `signal`, so kodza:destroy stops it all.
  function mount(root, signal) {
    const nav = root.querySelector(c('menu'));
    const line = root.querySelector(c('line'));
    const links = [...root.querySelectorAll(c('link'))];

    // ---------- The line ----------
    let at = null; // the link the line is under
    let over = null; // the link under the pointer or the focus
    const current = () => links.find((link) => link.getAttribute('aria-current') === 'page') || null;

    // A link's word in the nav's own pixels: a parent scaled by transform does not shift it
    const span = (link) => {
      const n = nav.getBoundingClientRect();
      const scale = n.width / nav.offsetWidth || 1;
      const b = link.getBoundingClientRect();
      const pad = parseFloat(getComputedStyle(link).paddingLeft) || 0;
      return { left: (b.left - n.left) / scale + pad, right: (n.right - b.right) / scale + pad };
    };
    const set = ({ left, right }) => {
      line.style.setProperty('--kz-header-classic-line-left', `${left}px`);
      line.style.setProperty('--kz-header-classic-line-right', `${right}px`);
    };
    // A line with no length, in the middle of a link's word
    const dot = (link) => {
      const s = span(link);
      const mid = (s.left + nav.offsetWidth - s.right) / 2;
      return { left: mid, right: nav.offsetWidth - mid };
    };
    const instantly = (fn) => {
      line.classList.add('is-instant');
      fn();
      getComputedStyle(line, '::after').clipPath; // both edges settle before the transitions come back
      void line.offsetWidth;
      line.classList.remove('is-instant');
    };

    const go = (link, instant) => {
      if (!line || !nav.offsetWidth) return; // the links are hidden below 900 px
      if (instant) {
        instantly(() => set(link ? span(link) : { left: 0, right: nav.offsetWidth }));
      } else if (link && !at) {
        // From nowhere: it grows out of the middle of the word
        line.classList.remove('is-rightward', 'is-leftward');
        instantly(() => set(dot(link)));
        set(span(link));
      } else if (link) {
        // From a link to the next: the edge in front leaves first
        if (link !== at) {
          const rightward = links.indexOf(link) > links.indexOf(at);
          line.classList.toggle('is-rightward', rightward);
          line.classList.toggle('is-leftward', !rightward);
        }
        set(span(link));
      } else if (at) {
        // Back to nowhere: it shrinks into the middle of the last word
        line.classList.remove('is-rightward', 'is-leftward');
        set(dot(at));
      }
      at = link;
    };

    if (nav && line) {
      nav.addEventListener('pointerover', (event) => {
        const link = event.target.closest?.(c('link'));
        if (!link || link === over) return;
        over = link;
        go(link);
      }, { signal });
      nav.addEventListener('pointerleave', () => {
        over = null;
        go(current());
      }, { signal });
      nav.addEventListener('focusin', (event) => {
        const link = event.target.closest?.(c('link'));
        if (!link) return;
        over = link;
        go(link);
      }, { signal });
      nav.addEventListener('focusout', (event) => {
        if (nav.contains(event.relatedTarget)) return;
        over = null;
        go(current());
      }, { signal });
      // The links change size (fonts, the window, the 900 px step): the line follows at once
      const fit = () => {
        at = over || current();
        go(at, true);
      };
      const watch = new ResizeObserver(fit);
      watch.observe(nav);
      signal.addEventListener('abort', () => watch.disconnect());
      document.fonts?.ready.then(() => !signal.aborted && fit());
      fit();
    }

    // ---------- The shutter, below 900 px ----------
    const toggle = root.querySelector(c('toggle'));
    const panel = root.querySelector(c('panel'));
    const list = root.querySelector(c('list'));
    if (!toggle || !panel || !list || !('popover' in panel)) return;
    toggle.popoverTargetElement = panel;

    // The menu is written from the links of the bar: one source for both
    links.forEach((link, i) => {
      const item = document.createElement('a');
      item.className = 'kodza-header-classic__item';
      ['href', 'target', 'rel', 'aria-current'].forEach((name) => {
        if (link.hasAttribute(name)) item.setAttribute(name, link.getAttribute(name));
      });
      const index = document.createElement('span');
      index.className = 'kodza-header-classic__index';
      index.setAttribute('aria-hidden', 'true');
      index.textContent = String(i + 1).padStart(2, '0');
      const mask = document.createElement('span');
      mask.className = 'kodza-header-classic__mask';
      const word = document.createElement('span');
      word.className = 'kodza-header-classic__word';
      word.textContent = link.textContent.trim();
      mask.append(word);
      item.append(index, mask);
      list.append(item);
    });

    const words = [...toggle.querySelectorAll(c('say'))];
    const parts = [...panel.querySelectorAll(`${c('item')}, ${c('info')}`)];
    let open = false;
    let started = 0;
    let held = null;
    const rolls = new Map();

    // The shutter starts under the header (or at --kz-header-classic-menu-top)
    const place = () => {
      const top = getComputedStyle(root).getPropertyValue('--kz-header-classic-menu-top').trim();
      if (top && top !== 'auto') {
        panel.style.setProperty('--kz-header-classic-from', top);
        return;
      }
      const edge = Math.max(root.getBoundingClientRect().bottom, toggle.getBoundingClientRect().bottom);
      panel.style.setProperty('--kz-header-classic-from', `${Math.max(0, Math.round(edge))}px`);
    };

    // Each row starts when the edge of the shutter gets to it
    const time = () => {
      const style = getComputedStyle(root);
      const raw = style.getPropertyValue('--kz-header-classic-menu-duration').trim();
      const duration = reduceMotion ? 0 : parseFloat(raw) * (/ms$/.test(raw) ? 1 : 1000) || 800;
      const match = style.getPropertyValue('--kz-header-classic-menu-ease').match(/cubic-bezier\(([^)]+)\)/);
      const curve = match ? match[1].split(',').map(Number) : [0.76, 0, 0.24, 1];
      const box = panel.getBoundingClientRect();
      const late = performance.now() - started;
      parts.forEach((part) => {
        const p = Math.min(1, Math.max(0, (part.getBoundingClientRect().top - box.top) / (box.height || 1)));
        const delay = Math.max(0, duration * timeAt(curve, p) - late - 40);
        part.style.setProperty('--kz-header-classic-delay', `${Math.round(delay)}ms`);
      });
    };

    // Menu rolls to Close and back the same way: the old word goes up, the new one comes from below.
    // A click during the roll turns it back from where the words are
    const roll = () => {
      if (reduceMotion || words.length < 2) return;
      words.forEach((word, i) => {
        const coming = i === Number(open);
        const from = rolls.has(word) ? getComputedStyle(word).translate : coming ? '0 115%' : '0 0';
        rolls.get(word)?.cancel();
        const run = word.animate(
          { translate: [from, coming ? '0 0' : '0 -115%'] },
          { duration: 500, easing: 'cubic-bezier(0.22, 1, 0.36, 1)' },
        );
        rolls.set(word, run);
        run.finished.then(() => rolls.get(word) === run && rolls.delete(word), () => {});
      });
    };

    // While it is open the page stays where it is
    const hold = () => {
      held = new AbortController();
      const s = held.signal;
      const spot = [scrollX, scrollY];
      let last = 0;
      document.addEventListener('wheel', (event) => {
        if (!scrollsInside(panel, event.target, event.clientX, event.clientY, event.deltaY)) event.preventDefault();
      }, { passive: false, signal: s });
      document.addEventListener('touchstart', (event) => (last = event.touches[0].clientY), { passive: true, signal: s });
      document.addEventListener('touchmove', (event) => {
        const touch = event.touches[0];
        const dy = last - touch.clientY;
        last = touch.clientY;
        if (!scrollsInside(panel, event.target, touch.clientX, touch.clientY, dy)) event.preventDefault();
      }, { passive: false, signal: s });
      // A scrollbar dragged anyway: the page goes back to where it was
      window.addEventListener('scroll', () => {
        if (scrollX !== spot[0] || scrollY !== spot[1]) window.scrollTo({ left: spot[0], top: spot[1], behavior: 'instant' });
      }, { signal: s });
      // Wide enough for the links again: the shutter has no button left, it goes
      window.addEventListener('resize', () => {
        if (!toggle.getClientRects().length) panel.hidePopover();
        else place();
      }, { signal: s });
    };
    const release = () => {
      held?.abort();
      held = null;
    };

    panel.addEventListener('beforetoggle', (event) => {
      open = event.newState === 'open';
      toggle.setAttribute('aria-expanded', String(open));
      words.forEach((word, i) => (i === Number(open) ? word.removeAttribute('aria-hidden') : word.setAttribute('aria-hidden', 'true')));
      roll();
      if (open) {
        started = performance.now();
        place();
        hold();
      } else {
        panel.classList.remove('is-open');
        release();
      }
    }, { signal });

    panel.addEventListener('toggle', (event) => {
      if (event.newState !== 'open' || !open) return;
      time();
      panel.classList.add('is-open');
    }, { signal });

    // Tab past the last link, or a link followed: the shutter rolls back up
    panel.addEventListener('focusout', (event) => {
      const next = event.relatedTarget;
      if (open && next && !panel.contains(next) && next !== toggle) panel.hidePopover();
    }, { signal });
    panel.addEventListener('click', (event) => {
      if (open && event.target.closest('a[href]')) panel.hidePopover();
    }, { signal });

    signal.addEventListener('abort', () => {
      rolls.forEach((run) => run.cancel());
      release();
      if (open) panel.hidePopover();
    });
  }

  // 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. Each running root
  // keeps its markup as written under KODZA, shared by every Kodza script on the page: a Kodza
  // component inside another one is saved as written, not half-started, and stopped with it.
  const KODZA = Symbol.for('kodza');
  const instances = new WeakMap();
  const find = (scope = document) => [scope, ...scope.querySelectorAll(SELECTOR)].filter((el) => el.matches?.(SELECTOR));
  const attrsOf = (el) => [...el.attributes].map((a) => [a.name, a.value]);
  const put = (el, saved) => {
    [...el.attributes].forEach((a) => el.removeAttribute(a.name));
    saved.attrs.forEach(([name, value]) => el.setAttribute(name, value));
    el.innerHTML = saved.html;
  };
  // The markup inside a root as written: Kodza components already running in it give back their own
  const written = (root) => {
    const all = [...root.querySelectorAll('*')];
    if (!all.some((el) => el[KODZA])) return root.innerHTML;
    const copy = root.cloneNode(true);
    const twins = copy.querySelectorAll('*');
    let last = null;
    all.forEach((el, i) => {
      if (!el[KODZA] || last?.contains(el)) return;
      last = el;
      put(twins[i], el[KODZA]);
    });
    return copy.innerHTML;
  };
  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();
    const saved = { html: written(root), attrs: attrsOf(root), stop: () => destroy(root) };
    instances.set(root, { controller, saved });
    root[KODZA] = saved;
    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);
    // The Kodza components running inside it stop first: once its markup is put back, their own
    // script could not find them any more
    root.querySelectorAll('*').forEach((el) => el[KODZA]?.stop());
    instance.controller.abort();
    delete root[KODZA];
    put(root, instance.saved);
  });
  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).