Media Expand

<figure class="kodza-media-expand" data-kodza-media-expand>
  <div class="kodza-media-expand__frame">
    <img src="https://kodza.dev/media/kz-gap-1400.webp" srcset="https://kodza.dev/media/kz-gap-1400.webp 1400w, https://kodza.dev/media/kz-gap-2400.webp 2400w" sizes="(max-width: 559px) 300vw, 150vw" alt="A long concrete wall split down the middle, a low sun pouring a band of light through the slit" width="1400" height="583" loading="lazy">
  </div>
  <figcaption class="kodza-media-expand__caption">
    <span class="kodza-media-expand__label">Case 07 — Étretat, 2026</span>
    <span class="kodza-media-expand__title">Less deck. More building.</span>
  </figcaption>
</figure>

/* Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license */
/* Kodza — Media Expand
   An image (or a muted video) waits in a rounded frame, set in from the edges. Scrolled to the
   middle of the screen, it takes the whole width: the corners go square as they reach the edges,
   the picture settles from a slight zoom, and once it is full the caption rises from its mask.
   Scroll back up and it all plays in reverse. The width follows the scroll itself; only the
   caption plays on its own.
   Tuned with the --kz-media-expand-* variables; the smoothing and the caption's thresholds are
   constants at the top of component.js. */
.kodza-media-expand {
  /* The frame's shape: the picture is cropped to it, never stretched */
  --kz-media-expand-ratio: 16 / 9;
  /* The same frame on a medium width (560 to 900px), then on a narrow one (under 560px), where a
     wide one would be a strip */
  --kz-media-expand-ratio-medium: 4 / 3;
  --kz-media-expand-ratio-narrow: 4 / 5;
  /* Never taller than the screen: past it, the picture is cropped instead */
  --kz-media-expand-max-height: 100svh;
  /* How far the frame is set in at rest, on each side (a share of its width and height) */
  --kz-media-expand-inset: 8%;
  /* Corners at rest, and once full (0: square, flush with the edges) */
  --kz-media-expand-radius: calc(24px * var(--kz-radius-scale, 1));
  --kz-media-expand-radius-end: 0px;
  /* The picture's zoom at rest; it settles to 1 as the frame opens */
  --kz-media-expand-zoom: 1.12;
  /* The caption over the picture, and the veil that keeps it readable */
  --kz-media-expand-caption-ink: #fff;
  --kz-media-expand-caption-pad: clamp(20px, 4.5cqi, 56px);
  --kz-media-expand-veil: rgba(10, 10, 10, 0.6);
  --kz-media-expand-mono: var(--kz-font-mono, "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace);
  --kz-media-expand-duration: 0.7s;
  --kz-media-expand-ease: cubic-bezier(0.22, 1, 0.36, 1);

  position: relative;
  container-type: inline-size;
  margin: 0;
}

/* The frame: clipped from the inset to the full box as the script writes the progress (0 at
   rest, 1 full). Without the script, it is simply full */
.kodza-media-expand__frame {
  --kz-media-expand-rest: calc(1 - var(--kz-media-expand-progress, 1));
  position: relative;
  width: 100%;
  aspect-ratio: var(--kz-media-expand-ratio);
  max-height: var(--kz-media-expand-max-height);
  overflow: hidden;
  clip-path: inset(
    calc(var(--kz-media-expand-inset) * var(--kz-media-expand-rest))
    round calc(var(--kz-media-expand-radius-end) + (var(--kz-media-expand-radius) - var(--kz-media-expand-radius-end)) * var(--kz-media-expand-rest))
  );
}

.kodza-media-expand__frame > img,
.kodza-media-expand__frame > video,
.kodza-media-expand__frame > picture,
.kodza-media-expand__frame > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
}

.kodza-media-expand__frame > img,
.kodza-media-expand__frame > video,
.kodza-media-expand__frame > picture {
  transform: scale(calc(1 + (var(--kz-media-expand-zoom) - 1) * var(--kz-media-expand-rest)));
}

/* The veil under the caption: a dark falloff from the bottom edge, shown with it */
.kodza-media-expand__frame::after {
  content: "";
  position: absolute;
  inset: 45% 0 0;
  background: linear-gradient(to top, var(--kz-media-expand-veil), var(--kz-media-expand-veil) 40%, transparent);
  pointer-events: none;
}

.kodza-media-expand__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  gap: 10px;
  justify-items: start;
  padding: var(--kz-media-expand-caption-pad);
  color: var(--kz-media-expand-caption-ink);
  pointer-events: none;
}

/* Each line rides up from behind its own mask (the script wraps its text in __rise) */
.kodza-media-expand__label,
.kodza-media-expand__title {
  display: block;
  max-width: 100%;
  overflow: hidden;
}

.kodza-media-expand__label {
  font-family: var(--kz-font-label, var(--kz-media-expand-mono));
  font-size: var(--kz-font-label-size, 12.5px);
  font-weight: var(--kz-font-label-weight, 500);
  line-height: var(--kz-font-label-leading, 1.4);
  letter-spacing: var(--kz-font-label-tracking, 0.02em);
  text-transform: var(--kz-font-label-case, inherit);
  opacity: 0.88;
}

.kodza-media-expand__title {
  /* Room for the descenders inside the mask */
  padding-bottom: 0.08em;
  margin-bottom: -0.08em;
  font-family: var(--kz-font-display, inherit);
  font-size: calc(clamp(26px, 5.2cqi, 64px) * var(--kz-font-display-scale, 1));
  font-weight: var(--kz-font-display-weight, 600);
  line-height: 1.02;
  letter-spacing: var(--kz-font-display-tracking, -0.045em);
  text-transform: var(--kz-font-display-case, inherit);
  text-wrap: balance;
}

.kodza-media-expand__rise {
  display: block;
}

/* Moving (the script runs and motion is allowed): the caption and its veil wait below until the
   frame is full, then rise; they drop back, quicker, as soon as it starts closing */
.kodza-media-expand.is-moving .kodza-media-expand__rise {
  transform: translate3d(0, 110%, 0);
  transition: transform calc(0.4s * var(--kz-motion-scale, 1)) cubic-bezier(0.65, 0, 0.35, 1);
}

.kodza-media-expand.is-moving .kodza-media-expand__frame::after {
  opacity: 0;
  transition: opacity calc(0.4s * var(--kz-motion-scale, 1)) cubic-bezier(0.65, 0, 0.35, 1);
}

.kodza-media-expand.is-moving.is-full .kodza-media-expand__rise {
  transform: none;
  transition: transform calc(var(--kz-media-expand-duration) * var(--kz-motion-scale, 1)) var(--kz-media-expand-ease);
}

.kodza-media-expand.is-moving.is-full .kodza-media-expand__title .kodza-media-expand__rise {
  transition-delay: calc(0.08s * var(--kz-motion-scale, 1));
}

.kodza-media-expand.is-moving.is-full .kodza-media-expand__frame::after {
  opacity: 1;
  transition: opacity calc(var(--kz-media-expand-duration) * var(--kz-motion-scale, 1)) var(--kz-media-expand-ease);
}

@container (max-width: 899.98px) {
  .kodza-media-expand__frame {
    aspect-ratio: var(--kz-media-expand-ratio-medium);
  }
}

@container (max-width: 559.98px) {
  .kodza-media-expand__frame {
    aspect-ratio: var(--kz-media-expand-ratio-narrow);
  }
}

@media (prefers-reduced-motion: reduce) {
  .kodza-media-expand *,
  .kodza-media-expand *::before,
  .kodza-media-expand *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* kodza-guard f9813a3bac93 — 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-media-expand__caption):not(#_),
:where(.kodza-media-expand__frame img:where(:not([class*="kodza-"]))):not(#_) {
  transition-duration: revert;
}

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

.kodza-media-expand:not(#_) {
  border: revert;
  padding: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: revert;
  transition: revert;
  list-style: revert;
  box-sizing: revert;
  background-color: revert;
  background-image: revert;
  box-shadow: revert;
  outline-offset: revert;
  appearance: 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-media-expand__frame:not(#_),
.kodza-media-expand__label:not(#_),
.kodza-media-expand__rise:not(#_),
.kodza-media-expand__title:not(#_) {
  box-sizing: revert;
}

.kodza-media-expand__caption:not(#_) {
  border: revert;
  margin: revert;
  border-radius: revert;
  outline: revert;
  text-decoration: 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;
  transition-delay: revert;
}

.kodza-media-expand__frame img:where(:not([class*="kodza-"])):not(#_) {
  border: revert;
  margin: 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-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;
  transition-delay: revert;
}

.kodza-media-expand:not(#_):where(:not([hidden])) {
  display: revert;
}

.kodza-media-expand:not(#_):where([hidden]) {
  display: none;
}

.kodza-media-expand__frame: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-media-expand:not(#_) {
  position: relative;
}

.kodza-media-expand__frame > img:not(#_) {
  display: block;
  max-width: none;
}

.kodza-media-expand__caption:not(#_) {
  position: absolute;
  display: grid;
  padding: var(--kz-media-expand-caption-pad);
  color: var(--kz-media-expand-caption-ink);
}

@media (prefers-reduced-motion: reduce) {
  .kodza-media-expand *:where(img, figcaption):not(#_) {
    transition-duration: 0.01ms !important;
  }
}

// Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license
// Kodza — Media Expand
// Writes the frame's progress (0 at rest, 1 full) as the scroll carries it from the bottom of the
// screen to the middle, with a soft follow; the CSS turns it into the inset, the corners and the
// zoom. Once full, the caption rises (is-full), and drops back as soon as the frame closes.
// Reduced motion, or a site pace of 0: the frame is full and the caption shown, nothing moves.
(() => {
  const SELECTOR = '[data-kodza-media-expand]';
  // How long the frame takes to catch up with the scroll, in ms (times the site's pace): a soft
  // follow instead of a frame glued to the wheel. 0 glues it
  const SMOOTHING = 120;
  // The caption rises once the frame is this full, and drops back below the second: the gap keeps
  // it from flickering when the scroll stops right on the edge
  const CAPTION_IN = 0.97;
  const CAPTION_OUT = 0.9;
  // The progress left to travel below this ends the loop
  const SETTLE = 0.0005;

  const reduceMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  // The site's pace, --kz-motion-scale (set on :root, read on the instance): every duration of the
  // script times it, and 0 moves nothing, like reduced motion
  const paceOf = (el) => {
    const pace = parseFloat(getComputedStyle(el).getPropertyValue('--kz-motion-scale'));
    return pace >= 0 ? pace : 1;
  };
  const clamp = (value, min, max) => Math.min(max, Math.max(min, value));
  // Slow out of the rest, slow into the full width: the corners square off gently at the edges
  const ease = (t) => (t < 0.5 ? 4 * t * t * t : 1 - (-2 * t + 2) ** 3 / 2);

  // One instance, with its own state: two copies on a page never interfere. Everything it
  // starts is tied to `signal` (listeners get { signal }, observers and timers stop on its
  // 'abort' event), so kodza:destroy stops it all.
  function mount(root, signal) {
    const frame = root.querySelector('.kodza-media-expand__frame');
    if (!frame) return;
    // Each caption line gets an inner span, the part that rides up from behind the line's mask
    root.querySelectorAll('.kodza-media-expand__label, .kodza-media-expand__title').forEach((line) => {
      const rise = document.createElement('span');
      rise.className = 'kodza-media-expand__rise';
      rise.append(...line.childNodes);
      line.append(rise);
    });

    const pace = paceOf(root);
    const still = reduceMotion || !pace; // the still path: no motion asked, by the visitor or the site
    if (still) return;
    const smoothing = SMOOTHING * pace;

    let current = null; // the progress written now
    let raf = 0;
    let last = 0;
    let shown = false;

    // 0 while the frame's middle is at the bottom of the screen, 1 once it reaches the middle of
    // the screen. Read on the figure, whose box the clip never changes
    const goal = () => {
      const rect = root.getBoundingClientRect();
      return ease(clamp((innerHeight - rect.top - rect.height / 2) / (innerHeight / 2), 0, 1));
    };
    const write = () => {
      root.style.setProperty('--kz-media-expand-progress', current.toFixed(4));
      if (current >= CAPTION_IN) root.classList.add('is-full');
      else if (current < CAPTION_OUT) root.classList.remove('is-full');
    };
    const tick = (now) => {
      raf = 0;
      const to = goal();
      const step = last ? Math.min(now - last, 64) : 16.7;
      last = now;
      if (current === null || !smoothing) current = to;
      else current += (to - current) * (1 - Math.exp(-step / smoothing));
      if (Math.abs(to - current) < SETTLE) current = to;
      write();
      if (current !== to) raf = requestAnimationFrame(tick);
      else last = 0;
    };
    const queue = () => {
      if (!shown || raf) return;
      raf = requestAnimationFrame(tick);
    };

    // Placed before it first shows, so it never opens in front of you on load
    current = goal();
    write();
    root.classList.add('is-moving');

    const io = new IntersectionObserver(([entry]) => {
      shown = entry.isIntersecting;
      if (shown) {
        current = goal(); // back on screen after a jump (an anchor, Home): placed, not chased
        write();
        queue();
      }
    });
    io.observe(root);
    const resize = new ResizeObserver(queue);
    resize.observe(root);
    window.addEventListener('scroll', queue, { passive: true, signal });
    window.addEventListener('resize', queue, { signal });
    signal.addEventListener('abort', () => {
      io.disconnect();
      resize.disconnect();
      cancelAnimationFrame(raf);
    });
  }

  // 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. Two
  // components on one root (a reveal on a stat card) both start, and stop together.
  const KODZA = Symbol.for('kodza');
  const RUNNING = Symbol.for(`kodza ${SELECTOR}`); // a root this component runs on, for every copy of this script
  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) => {
    // Already running, maybe from another copy of this script. Marked is-ready with no Kodza component
    // running on it, a root is a copy of a started one (a cloned slide): it is left as it is
    if (root[RUNNING] || (root.classList.contains('is-ready') && !root[KODZA])) return;
    // Rendered by React (data-kodza-manual): React starts it, with an init aimed at that markup once
    // it has hydrated it. Any earlier start would change markup React has not taken over yet
    const owner = root.closest('[data-kodza-manual]');
    if (owner && !(scope && owner.contains(scope))) return;
    const controller = new AbortController();
    // Another Kodza component already running on this root: its markup as written is kept, and the
    // two stop together
    const before = root[KODZA];
    const saved = { html: before ? before.html : written(root), attrs: before ? before.attrs : attrsOf(root), stop: () => destroy(root) };
    if (before) before.above = saved;
    instances.set(root, { controller, saved, before });
    root[KODZA] = saved;
    root[RUNNING] = true;
    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.saved.above?.stop(); // a Kodza component started after it on the same root stops first
    // 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[RUNNING];
    // Started on top of another one: that one stops next, and puts the markup back
    if (instance.before) {
      delete instance.before.above;
      root[KODZA] = instance.before;
      return instance.before.stop();
    }
    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 });
})();

'use client';
// Kodza — Media Expand, for React. From https://kodza.dev/components/media-expand/
// 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: media-expand.css and media-expand.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.
// data-kodza-manual keeps the script from starting it on its own: the effect below does, once
// React has hydrated the markup (on a page that streams in, the script can load first).
// 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 './media-expand.css';

export type MediaExpandProps = Omit<ComponentPropsWithoutRef<'figure'>, "children" | "vars"> & {
  /** Settings, as CSS variables on the root */
  vars?: {
    /** default: 16 / 9 */
    "--kz-media-expand-ratio"?: string | number;
    /** default: 4 / 3 */
    "--kz-media-expand-ratio-medium"?: string | number;
    /** default: 4 / 5 */
    "--kz-media-expand-ratio-narrow"?: string | number;
    /** default: 100svh */
    "--kz-media-expand-max-height"?: string | number;
    /** default: 8% */
    "--kz-media-expand-inset"?: string | number;
    /** default: calc(24px * var(--kz-radius-scale, 1)) */
    "--kz-media-expand-radius"?: string | number;
    /** default: 0px */
    "--kz-media-expand-radius-end"?: string | number;
    /** default: 1.12 */
    "--kz-media-expand-zoom"?: string | number;
    /** default: #fff */
    "--kz-media-expand-caption-ink"?: string | number;
    /** default: clamp(20px, 4.5cqi, 56px) */
    "--kz-media-expand-caption-pad"?: string | number;
    /** default: rgba(10, 10, 10, 0.6) */
    "--kz-media-expand-veil"?: string | number;
    /** default: var(--kz-font-mono, "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace) */
    "--kz-media-expand-mono"?: string | number;
    /** default: 0.7s */
    "--kz-media-expand-duration"?: string | number;
    /** default: cubic-bezier(0.22, 1, 0.36, 1) */
    "--kz-media-expand-ease"?: string | number;
  };
  className?: string;
};

export function MediaExpand({ vars, className, style, ...rest }: MediaExpandProps) {
  const ref = useRef<ComponentRef<'figure'>>(null);
  const classes = ["kodza-media-expand", 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('./media-expand.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 (
    <figure data-kodza-media-expand="" key={key} {...rest} className={classes} data-kodza-manual style={{ ...vars, ...style } as CSSProperties} ref={ref}>
      <div className="kodza-media-expand__frame">
        <img src="https://kodza.dev/media/kz-gap-1400.webp" srcSet="https://kodza.dev/media/kz-gap-1400.webp 1400w, https://kodza.dev/media/kz-gap-2400.webp 2400w" sizes="(max-width: 559px) 300vw, 150vw" alt="A long concrete wall split down the middle, a low sun pouring a band of light through the slit" width="1400" height="583" loading="lazy" />
      </div>
      <figcaption className="kodza-media-expand__caption">
        <span className="kodza-media-expand__label">Case 07 — Étretat, 2026</span>
        {' '}
        <span className="kodza-media-expand__title">Less deck. More building.</span>
      </figcaption>
    </figure>
  );
}