Sticky Buy Bar

<div class="kodza-sticky-buy-bar" data-until="footer">
  <img class="kodza-sticky-buy-bar__image" src="https://kodza.dev/media/shop/kz-shop-chair-chalk-800.webp" width="44" height="44" alt="" decoding="async">
  <p class="kodza-sticky-buy-bar__info">
    <span class="kodza-sticky-buy-bar__name">Shell Chair</span>
    <span class="kodza-sticky-buy-bar__line"><span class="kodza-sticky-buy-bar__variant"><span>Chalk</span></span><span class="kodza-sticky-buy-bar__price"><span>€390</span></span></span>
  </p>
  <button class="kodza-sticky-buy-bar__add" type="button"><span class="kodza-sticky-buy-bar__word">Add to cart</span></button>
</div>

/* Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license */
/* Kodza — Sticky Buy Bar
   On a product page, once the page's own Add to cart has scrolled away, this bar comes up from
   the bottom: the picture, the name, the variant chosen, the price and the same button. It goes
   back down when the real button returns, at the footer, and while the cart is open. */
.kodza-sticky-buy-bar {
  --kz-sticky-buy-bar-fg: var(--kz-color-ink, #0a0a0a);
  --kz-sticky-buy-bar-muted: color-mix(in srgb, var(--kz-sticky-buy-bar-fg) 62%, transparent);
  --kz-sticky-buy-bar-line: color-mix(in srgb, var(--kz-sticky-buy-bar-fg) 12%, transparent);
  --kz-sticky-buy-bar-paper: var(--kz-color-paper, #ffffff);
  --kz-sticky-buy-bar-ink: var(--kz-color-accent, var(--kz-sticky-buy-bar-fg));
  --kz-sticky-buy-bar-on-ink: var(--kz-color-on-accent, var(--kz-sticky-buy-bar-paper));
  /* Its width on a large screen (centred), and how far it sits from the screen's edges */
  --kz-sticky-buy-bar-width: 560px;
  --kz-sticky-buy-bar-gap: 12px;
  --kz-sticky-buy-bar-layer: 40; /* z-index: under a modal (the Cart Drawer's dialog), above the page */
  --kz-sticky-buy-bar-ease: cubic-bezier(0.22, 1, 0.36, 1);

  position: fixed;
  right: max(var(--kz-sticky-buy-bar-gap), env(safe-area-inset-right));
  bottom: max(var(--kz-sticky-buy-bar-gap), env(safe-area-inset-bottom));
  left: max(var(--kz-sticky-buy-bar-gap), env(safe-area-inset-left));
  z-index: var(--kz-sticky-buy-bar-layer);
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  box-sizing: border-box;
  /* A set width (not just a cap) so a theme's own max-width on page blocks cannot widen it */
  width: var(--kz-sticky-buy-bar-width);
  max-width: calc(100% - max(var(--kz-sticky-buy-bar-gap), env(safe-area-inset-left)) - max(var(--kz-sticky-buy-bar-gap), env(safe-area-inset-right)));
  margin: 0 auto;
  padding: 8px;
  border: 1px solid var(--kz-sticky-buy-bar-line);
  border-radius: calc(18px * var(--kz-radius-scale, 1));
  background: var(--kz-sticky-buy-bar-paper);
  box-shadow: 0 18px 40px -16px rgba(0, 0, 0, 0.28), 0 2px 6px rgba(0, 0, 0, 0.06);
  color: var(--kz-sticky-buy-bar-fg);
  /* Down, out of the screen, until the script brings it up */
  transform: translateY(calc(100% + var(--kz-sticky-buy-bar-gap) + 24px));
  visibility: hidden;
  transition:
    transform calc(0.5s * var(--kz-motion-scale, 1)) cubic-bezier(0.65, 0, 0.35, 1),
    visibility 0s linear calc(0.5s * var(--kz-motion-scale, 1));
}
.kodza-sticky-buy-bar.is-shown {
  transform: none;
  visibility: visible;
  transition:
    transform calc(0.6s * var(--kz-motion-scale, 1)) var(--kz-sticky-buy-bar-ease),
    visibility 0s;
}
.kodza-sticky-buy-bar__image {
  display: block;
  width: 44px;
  height: 44px;
  margin: 0;
  border-radius: calc(10px * var(--kz-radius-scale, 1));
  background: color-mix(in srgb, var(--kz-sticky-buy-bar-fg) 5%, transparent);
  object-fit: cover;
}
.kodza-sticky-buy-bar__info {
  display: grid;
  min-width: 0;
  margin: 0;
  line-height: 1.25;
}
.kodza-sticky-buy-bar__name {
  overflow: hidden;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.kodza-sticky-buy-bar__line {
  display: flex;
  gap: 8px;
  min-width: 0;
  color: var(--kz-sticky-buy-bar-muted);
  font-size: 13px;
}
/* The variant and the price roll in their own box (the script) */
.kodza-sticky-buy-bar__variant,
.kodza-sticky-buy-bar__price {
  display: inline-grid;
  overflow: hidden;
  white-space: nowrap;
}
.kodza-sticky-buy-bar__variant {
  min-width: 0;
}
.kodza-sticky-buy-bar__variant > span,
.kodza-sticky-buy-bar__price > span {
  grid-area: 1 / 1;
  overflow: hidden;
  text-overflow: ellipsis;
}
.kodza-sticky-buy-bar__price {
  flex: none;
  color: var(--kz-sticky-buy-bar-fg);
  font-variant-numeric: tabular-nums;
}
.kodza-sticky-buy-bar__add {
  display: grid;
  place-items: center;
  min-width: 128px;
  height: 44px;
  margin: 0;
  padding: 0 18px;
  overflow: hidden;
  border: 0;
  border-radius: var(--kz-radius-pill, 999px);
  background: var(--kz-sticky-buy-bar-ink);
  box-shadow: none;
  color: var(--kz-sticky-buy-bar-on-ink);
  font: inherit;
  font-family: var(--kz-font-label, inherit);
  font-size: var(--kz-font-label-size, 14px);
  font-weight: var(--kz-font-label-weight, 500);
  line-height: 1;
  letter-spacing: var(--kz-font-label-tracking, normal);
  text-transform: var(--kz-font-label-case, none);
  white-space: nowrap;
  cursor: pointer;
  transition: transform calc(0.2s * var(--kz-motion-scale, 1)) var(--kz-sticky-buy-bar-ease);
  -webkit-tap-highlight-color: transparent;
}
.kodza-sticky-buy-bar__add:active {
  transform: scale(0.97);
}
.kodza-sticky-buy-bar__add:focus {
  outline: none;
}
.kodza-sticky-buy-bar__add:focus-visible {
  outline: 2px solid var(--kz-sticky-buy-bar-fg);
  outline-offset: 3px;
}
.kodza-sticky-buy-bar__word {
  display: inline-flex;
  align-items: center;
  grid-area: 1 / 1;
  gap: 6px;
}
.kodza-sticky-buy-bar__tick {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.kodza-sticky-buy-bar__tick path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: kodza-sticky-buy-bar-tick calc(0.38s * var(--kz-motion-scale, 1)) var(--kz-sticky-buy-bar-ease) calc(0.16s * var(--kz-motion-scale, 1)) forwards;
}
@keyframes kodza-sticky-buy-bar-tick {
  to {
    stroke-dashoffset: 0;
  }
}
@media (max-width: 380px) {
  .kodza-sticky-buy-bar__add {
    min-width: 0;
    padding: 0 14px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .kodza-sticky-buy-bar,
  .kodza-sticky-buy-bar.is-shown,
  .kodza-sticky-buy-bar__add {
    transition: none;
  }
  .kodza-sticky-buy-bar__tick path {
    animation: none;
    stroke-dashoffset: 0;
  }
}

/* kodza-guard 3182b1f7b16a — 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-sticky-buy-bar__add):not(#_) {
  outline: revert;
  outline-offset: revert;
}

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

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

.kodza-sticky-buy-bar__name:not(#_),
.kodza-sticky-buy-bar__line:not(#_),
.kodza-sticky-buy-bar__variant:not(#_),
.kodza-sticky-buy-bar__price:not(#_),
.kodza-sticky-buy-bar__word:not(#_),
.kodza-sticky-buy-bar__variant span:where(:not([class*="kodza-"])):not(#_),
.kodza-sticky-buy-bar__price span:where(:not([class*="kodza-"])):not(#_) {
  box-sizing: revert;
}

.kodza-sticky-buy-bar__add:not(#_) {
  text-decoration: revert;
  list-style: revert;
  box-sizing: revert;
  float: revert;
  position: revert;
  appearance: revert;
  max-width: revert;
  max-height: revert;
  text-underline-offset: revert;
  text-align: revert;
  text-indent: revert;
  text-shadow: revert;
  vertical-align: revert;
  min-height: 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-sticky-buy-bar:not(#_) {
  width: min(var(--kz-sticky-buy-bar-width), calc(100% - max(var(--kz-sticky-buy-bar-gap), env(safe-area-inset-left)) - max(var(--kz-sticky-buy-bar-gap), env(safe-area-inset-right))));
}

.kodza-sticky-buy-bar__image:not(#_) {
  display: block;
  margin: 0;
  border-radius: calc(10px * var(--kz-radius-scale, 1));
  background: color-mix(in srgb, var(--kz-sticky-buy-bar-fg) 5%, transparent);
}

.kodza-sticky-buy-bar__info:not(#_) {
  display: grid;
  margin: 0;
  line-height: 1.25;
}

.kodza-sticky-buy-bar__add:not(#_) {
  display: grid;
  place-items: center;
  min-width: 128px;
  height: 44px;
  margin: 0;
  padding: 0 18px;
  overflow: hidden;
  border: 0;
  border-radius: var(--kz-radius-pill, 999px);
  background: var(--kz-sticky-buy-bar-ink);
  box-shadow: none;
  color: var(--kz-sticky-buy-bar-on-ink);
  font: inherit;
  font-family: var(--kz-font-label, inherit);
  font-size: var(--kz-font-label-size, 14px);
  font-weight: var(--kz-font-label-weight, 500);
  line-height: 1;
  letter-spacing: var(--kz-font-label-tracking, normal);
  text-transform: var(--kz-font-label-case, none);
  white-space: nowrap;
  cursor: pointer;
  transition: transform calc(0.2s * var(--kz-motion-scale, 1)) var(--kz-sticky-buy-bar-ease);
  -webkit-tap-highlight-color: transparent;
}

.kodza-sticky-buy-bar__add:active:not(#_) {
  transform: scale(0.97);
}

.kodza-sticky-buy-bar__add:focus:not(#_) {
  outline: none;
}

.kodza-sticky-buy-bar__add:focus-visible:not(#_) {
  outline: 2px solid var(--kz-sticky-buy-bar-fg);
  outline-offset: 3px;
}

@media (max-width: 380px) {
  .kodza-sticky-buy-bar__add:not(#_) {
    min-width: 0;
    padding: 0 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .kodza-sticky-buy-bar__add:not(#_) {
    transition: none;
  }
}

// Kodza License: free to use, client work included. Not to resell or redistribute, ported or not: https://kodza.dev/docs/#print-license
// Kodza — Sticky Buy Bar
// On a product page, once the page's own Add to cart has scrolled off the top of the screen, a bar
// comes up from the bottom with the picture, the name, the variant chosen, the price and the same
// button. It goes back down when the real button returns, before the footer, and while a modal
// (the Cart Drawer) is open. The variant follows the page's form: its radios and selects
// (data-price, data-image on an option), or a Buy Box's kodza:variant-change.
// Settings: data-target (the buy form, a CSS selector: by default the nearest one around the bar)
// and data-until (what the bar never covers: the first match after the form, "footer" by default)
// on the root, the --kz-sticky-buy-bar-* variables in the CSS, data-text-* on the root, the
// constants below. The cart is the Cart engine, further down: a small cart kept in the browser,
// or your platform's through its events.
(() => {
  const SELECTOR = '.kodza-sticky-buy-bar';

  // Timings, in milliseconds (times the site's pace)
  const ROLL = 420; // the variant, price or button rolling
  // Not motion, so not paced
  const HOLD = 1600; // how long "Added" stays in the button

  // What the script writes, in English unless the root says otherwise (data-text-<key>)
  const WORDS = {
    added: 'Added', // in the button, once it is in the cart
  };
  const TICK = '<svg class="kodza-sticky-buy-bar__tick" viewBox="0 0 24 24" aria-hidden="true"><path d="M6 12.5l4 4 8-9" pathLength="1" /></svg>';

  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 FORMS = 'form[action$="/cart/add"], form[data-kodza-cart-add]';
  // The picture of what was added: in the form, or around it, without leaving its own card
  const pictureFor = (source) => {
    for (let el = source, i = 0; el instanceof Element && i < 4; el = el.parentElement, i++) {
      if (i && el.querySelectorAll(FORMS).length > 1) break;
      const img = el.querySelector('img');
      if (img) return img;
    }
    return null;
  };

  // The buy form: data-target, or the nearest one around the bar
  const formFor = (root) => {
    if (root.dataset.target) {
      try {
        return document.querySelector(root.dataset.target);
      } catch {
        return null;
      }
    }
    for (let el = root.parentElement; el; el = el.parentElement) {
      const form = [...el.querySelectorAll(FORMS)].find((found) => !root.contains(found));
      if (form) return form;
    }
    return null;
  };
  // What the bar never covers: the first match after the form
  const untilFor = (root, form) => {
    let found = [];
    try {
      found = [...document.querySelectorAll(root.dataset.until || 'footer')];
    } catch {
      return null;
    }
    return found.find((el) => form.compareDocumentPosition(el) & Node.DOCUMENT_POSITION_FOLLOWING && !el.contains(form)) || null;
  };
  const modalOpen = () => {
    try {
      return !!document.querySelector('dialog:modal');
    } catch {
      return false;
    }
  };

  // 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 form = formFor(root);
    if (!form) return;
    const pace = paceOf(root);
    const still = reduceMotion || !pace; // the still path: no motion asked, by the visitor or the site
    const ms = (t) => (still ? 0 : t * pace);
    const word = (key) => root.dataset[`text${key[0].toUpperCase()}${key.slice(1)}`] || WORDS[key];
    const q = (name) => root.querySelector(`.kodza-sticky-buy-bar__${name}`);
    const submitter = form.querySelector('button[type="submit"], button:not([type]), input[type="submit"]');
    const until = untilFor(root, form);

    const lang = root.closest('[lang]')?.lang || undefined;
    const currency = root.dataset.currency || form.dataset.currency;
    const money = (cents) => {
      const options = currency ? { style: 'currency', currency } : {};
      const digits = cents % 100 ? 2 : 0;
      try {
        return new Intl.NumberFormat(lang, { ...options, minimumFractionDigits: digits, maximumFractionDigits: digits }).format(cents / 100);
      } catch {
        return (cents / 100).toFixed(digits);
      }
    };
    const timers = new Set();
    const moving = new Set();
    const later = (fn, t) => {
      const id = setTimeout(() => {
        timers.delete(id);
        fn();
      }, t);
      timers.add(id);
      return id;
    };
    const play = (el, frames, options) => {
      const animation = el.animate(frames, options);
      moving.add(animation);
      animation.finished.then(() => moving.delete(animation), () => moving.delete(animation));
      return animation;
    };
    let frame = 0;
    const watch = new MutationObserver(() => soon());
    signal.addEventListener('abort', () => {
      timers.forEach(clearTimeout);
      moving.forEach((animation) => animation.cancel());
      cancelAnimationFrame(frame);
      watch.disconnect();
    });

    // A word rolling in its box: the old one goes up, the new one comes from below (`down`: the
    // other way, for a price that drops). Hidden, the bar just swaps it
    const current = new Map();
    const roll = (box, text, { tick = false, down = false } = {}) => {
      const old = current.get(box) || box?.firstElementChild;
      if (!old || (old.textContent === text && !!old.firstElementChild === tick)) return;
      const next = old.cloneNode(false);
      next.innerHTML = tick ? TICK : '';
      next.append(text);
      current.set(box, next);
      [...box.children].forEach((el) => el !== old && el.remove());
      if (!ms(1) || !root.classList.contains('is-shown')) return old.replaceWith(next);
      box.append(next);
      const options = { duration: ms(ROLL), easing: 'cubic-bezier(0.65, 0, 0.35, 1)' };
      // Far enough to leave its box: 130% of a word alone stays inside a tall button
      const far = `${Math.max(old.offsetHeight * 1.3, (box.clientHeight + old.offsetHeight) / 2 + 2)}px`;
      const away = down ? far : `-${far}`;
      play(old, [{ transform: 'none' }, { transform: `translateY(${away})` }], { ...options, fill: 'forwards' })
        .finished.then(() => old.remove(), () => old.remove());
      play(next, [{ transform: `translateY(${down ? `-${far}` : far})` }, { transform: 'none' }], options);
    };

    // Up once the form's button has left the top of the screen; down when it comes back, when
    // the footer comes in, and while a modal is open
    const anchor = submitter || form;
    let shown = false;
    root.inert = true;
    const place = () => {
      const box = anchor.getBoundingClientRect();
      const out = !!anchor.getClientRects().length && box.bottom < 0
        && (!until || until.getBoundingClientRect().top > window.innerHeight)
        && !modalOpen();
      if (out === shown) return;
      shown = out;
      // Leaving with the focus in it: back to the real button, without scrolling
      if (!out && root.contains(document.activeElement)) submitter?.focus({ preventScroll: true });
      root.classList.toggle('is-shown', out);
      root.inert = !out;
    };
    const soon = () => {
      if (!frame) frame = requestAnimationFrame(() => {
        frame = 0;
        place();
      });
    };
    window.addEventListener('scroll', soon, { passive: true, signal });
    window.addEventListener('resize', soon, { passive: true, signal });
    // A dialog opening or closing (the Cart Drawer): the bar steps aside
    watch.observe(document.documentElement, { subtree: true, attributes: true, attributeFilter: ['open'] });
    place();

    // The variant chosen in the form: its options, price and picture
    const variant = q('variant');
    const price = q('price');
    const image = q('image');
    let last = Number(root.dataset.price || form.dataset.price) || 0;
    const show = ({ text, cents, src }) => {
      if (variant && text) roll(variant, text);
      if (price && cents != null && !Number.isNaN(cents) && cents !== last) {
        roll(price, money(cents), { down: cents < last });
        last = cents;
      }
      if (image && src && image.getAttribute('src') !== src) image.src = src;
    };
    // A Buy Box says it with kodza:variant-change; any other form, with its radios and selects
    let told = false;
    form.addEventListener('kodza:variant-change', (event) => {
      told = true;
      const { options = {}, price: cents, image: src } = event.detail || {};
      show({ text: Object.values(options).join(' · '), cents: cents == null ? null : Number(cents), src });
    }, { signal });
    const read = () => {
      if (told || signal.aborted) return;
      const picked = [...form.elements].flatMap((field) => {
        if (field.type === 'radio' && field.checked) return [[field, field.closest('label')?.textContent.trim() || field.value]];
        if (field.tagName === 'SELECT' && field.selectedOptions[0]) return [[field.selectedOptions[0], field.selectedOptions[0].textContent.trim()]];
        return [];
      });
      if (!picked.length) return;
      const priced = picked.find(([el]) => el.dataset.price != null);
      const pictured = picked.find(([el]) => el.dataset.image);
      show({
        text: picked.map(([, text]) => text).filter(Boolean).join(' · '),
        cents: priced ? Number(priced[0].dataset.price) : null,
        src: pictured?.[0].dataset.image,
      });
    };
    form.addEventListener('change', () => queueMicrotask(read), { signal });
    // What the form already holds (a choice kept by the browser, a restart): the bar starts on it
    read();

    // Add to cart: the page's own form, with its quantity and options, then Added for a moment
    const button = q('add');
    if (!button) return;
    const first = button.textContent.trim();
    let back = 0;
    button.addEventListener('click', () => {
      if (typeof form.requestSubmit !== 'function') return form.submit();
      if (submitter?.form === form && submitter.type === 'submit') form.requestSubmit(submitter);
      else form.requestSubmit();
    }, { signal });
    form.addEventListener('kodza:cart-add', (event) => {
      roll(button, word('added'), { tick: true });
      clearTimeout(back);
      timers.delete(back);
      const reset = () => roll(button, first);
      // The platform passes its request to wait() while the event runs: read it just after
      queueMicrotask(() => {
        Promise.resolve(event.detail?.request).then(
          () => !signal.aborted && (back = later(reset, HOLD)),
          () => !signal.aborted && reset(),
        );
      });
    }, { signal });
  }

  // ---------- Cart engine (begin) ----------
  // The same block in every component of the E-commerce family, copied as is: the first one loaded
  // sets up window.kodzaCart, the next ones find it, so three components pasted make one cart.
  // It speaks in events on document, which bubble:
  //   kodza:cart-add     (cancelable) { id, variant, title, options, price, currency, quantity, image, url, wait(promise) }
  //   kodza:cart-update  (cancelable) { key, quantity }, 0 removes the line
  //   kodza:cart-change  the whole cart { items, count, subtotal, currency }, prices in cents
  //   kodza:cart-open    opens the Cart Drawer nearest to where it was sent from
  // Until a platform answers, a small cart kept in localStorage takes the adds. A platform
  // (Shopify, WooCommerce) cancels the add, makes its request, passes the promise to wait(), then
  // sends kodza:cart-change with its own cart: from then on the small cart only listens.
  // An add-to-cart <form action="/cart/add"> (name="id" or "add-to-cart", name="quantity",
  // options[Name]) works without the script; with it, its submit becomes a kodza:cart-add.
  const cart = window.kodzaCart || (window.kodzaCart = (() => {
    const STORE = 'kodza-cart';
    const COUNTS = '.kodza-header-shop__cart, .kodza-add-to-cart__cart, [data-kodza-cart-count]';
    let items = [];
    let listening = false;
    let sending = false;
    try {
      const saved = JSON.parse(localStorage.getItem(STORE) || 'null');
      if (Array.isArray(saved?.items)) items = saved.items;
    } catch {}
    const keyOf = (item) => String(item.key ?? item.variant ?? item.id ?? item.title);
    const whole = (n, fallback) => (Number.isFinite(Number(n)) ? Math.round(Number(n)) : fallback);
    const get = () => {
      const list = items.map((item) => ({ ...item, options: { ...item.options } }));
      return {
        items: list,
        count: list.reduce((n, item) => n + item.quantity, 0),
        subtotal: list.reduce((n, item) => n + item.price * item.quantity, 0),
        currency: list[0]?.currency || '',
      };
    };
    const counts = (n) => document.querySelectorAll(COUNTS).forEach((el) => {
      if (el.dataset.count !== String(n)) el.dataset.count = String(n);
    });
    const send = () => {
      const detail = get();
      counts(detail.count);
      sending = true;
      document.dispatchEvent(new CustomEvent('kodza:cart-change', { detail }));
      sending = false;
      if (!listening) {
        try {
          localStorage.setItem(STORE, JSON.stringify({ items }));
        } catch {}
      }
    };
    const formats = new Map();
    const format = (cents, currency, locale) => {
      const lang = locale || document.documentElement.lang || undefined;
      const id = `${lang}|${currency}`;
      if (!formats.has(id)) {
        try {
          formats.set(id, new Intl.NumberFormat(lang, currency ? { style: 'currency', currency } : { minimumFractionDigits: 2, maximumFractionDigits: 2 }));
        } catch {
          formats.set(id, new Intl.NumberFormat(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 }));
        }
      }
      return formats.get(id).format((Number(cents) || 0) / 100);
    };
    const add = (item, source = document) => {
      const detail = { ...item, wait: (promise) => { detail.request = Promise.resolve(promise); } };
      source.dispatchEvent(new CustomEvent('kodza:cart-add', { bubbles: true, cancelable: true, detail }));
      return detail.request || Promise.resolve();
    };
    const update = (key, quantity, source = document) => {
      source.dispatchEvent(new CustomEvent('kodza:cart-update', { bubbles: true, cancelable: true, detail: { key: String(key), quantity } }));
    };
    // The small cart answers last (on window), once the page's own listeners had their say
    window.addEventListener('kodza:cart-add', (event) => {
      if (event.defaultPrevented || listening) return;
      const d = event.detail || {};
      const key = keyOf(d);
      const quantity = Math.max(1, whole(d.quantity, 1));
      const found = items.find((item) => item.key === key);
      if (found) found.quantity = Math.min(99, found.quantity + quantity);
      else {
        const item = {
          key, id: d.id ?? null, variant: d.variant ?? null, title: String(d.title || ''), options: { ...d.options },
          price: whole(d.price, 0), currency: d.currency || items[0]?.currency || '', quantity: Math.min(99, quantity),
          image: d.image || '', url: d.url || '',
        };
        items.splice(Number.isInteger(d.at) ? Math.min(d.at, items.length) : 0, 0, item);
      }
      send();
    });
    window.addEventListener('kodza:cart-update', (event) => {
      if (event.defaultPrevented || listening) return;
      const { key, quantity } = event.detail || {};
      const found = items.find((item) => item.key === String(key));
      if (!found) return;
      const n = Math.max(0, Math.min(99, whole(quantity, found.quantity)));
      if (n) found.quantity = n;
      else items = items.filter((item) => item !== found);
      send();
    });
    // A cart sent from elsewhere: a platform owns it now
    document.addEventListener('kodza:cart-change', (event) => {
      if (sending) return;
      listening = true;
      const d = event.detail || {};
      items = (d.items || []).map((item) => ({ ...item, key: keyOf(item), options: { ...item.options } }));
      counts(Math.max(0, whole(d.count, items.reduce((n, item) => n + item.quantity, 0))));
    });
    // An add-to-cart form sends its add instead of leaving the page
    document.addEventListener('submit', (event) => {
      const form = event.target;
      if (event.defaultPrevented || !(form instanceof HTMLFormElement) || !form.matches(FORMS)) return;
      event.preventDefault();
      const data = new FormData(form, event.submitter);
      const options = {};
      data.forEach((value, name) => {
        const match = /^options\[(.+)\]$/.exec(name);
        if (match) options[match[1]] = String(value);
      });
      const id = form.dataset.id || data.get('product-id') || data.get('add-to-cart') || data.get('id');
      const variant = data.get('variation_id') || data.get('id') || [id, ...Object.values(options)].join(' / ');
      const own = form.dataset;
      const picture = own.image ? null : pictureFor(form);
      add({
        id, variant, title: own.title || '', options, price: whole(own.price, 0), currency: own.currency || '',
        quantity: whole(data.get('quantity'), 1), image: own.image || picture?.currentSrc || picture?.src || '', url: own.url || '',
      }, form);
    });
    // Any [data-kodza-cart-open] (a bag link in a header) opens the drawer
    document.addEventListener('click', (event) => {
      const opener = event.target.closest?.('[data-kodza-cart-open]');
      if (!opener) return;
      event.preventDefault();
      opener.dispatchEvent(new CustomEvent('kodza:cart-open', { bubbles: true }));
    });
    const ready = () => counts(get().count);
    if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', ready, { once: true });
    else ready();
    return { get, add, update, format, send };
  })());
  // ---------- Cart engine (end) ----------

  // 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 — Sticky Buy Bar, for React. From https://kodza.dev/components/sticky-buy-bar/
// 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: sticky-buy-bar.css and sticky-buy-bar.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 './sticky-buy-bar.css';

export type StickyBuyBarProps = Omit<ComponentPropsWithoutRef<'div'>, "children" | "vars" | "until" | "onCartChange" | "onCartAdd" | "onCartUpdate" | "onCartOpen"> & {
  /** data-until on the root (default: footer) */
  until?: "footer";
  /** Settings, as CSS variables on the root */
  vars?: {
    /** default: var(--kz-color-ink, #0a0a0a) */
    "--kz-sticky-buy-bar-fg"?: string | number;
    /** default: color-mix(in srgb, var(--kz-sticky-buy-bar-fg) 62%, transparent) */
    "--kz-sticky-buy-bar-muted"?: string | number;
    /** default: color-mix(in srgb, var(--kz-sticky-buy-bar-fg) 12%, transparent) */
    "--kz-sticky-buy-bar-line"?: string | number;
    /** default: var(--kz-color-paper, #ffffff) */
    "--kz-sticky-buy-bar-paper"?: string | number;
    /** default: var(--kz-color-accent, var(--kz-sticky-buy-bar-fg)) */
    "--kz-sticky-buy-bar-ink"?: string | number;
    /** default: var(--kz-color-on-accent, var(--kz-sticky-buy-bar-paper)) */
    "--kz-sticky-buy-bar-on-ink"?: string | number;
    /** default: 560px */
    "--kz-sticky-buy-bar-width"?: string | number;
    /** default: 12px */
    "--kz-sticky-buy-bar-gap"?: string | number;
    /** z-index: under a modal (the Cart Drawer's dialog), above the page — default: 40 */
    "--kz-sticky-buy-bar-layer"?: string | number;
    /** default: cubic-bezier(0.22, 1, 0.36, 1) */
    "--kz-sticky-buy-bar-ease"?: string | number;
  };
  /** "kodza:cart-change", fired by the script (bubbles from the root) */
  onCartChange?: (event: CustomEvent) => void;
  /** "kodza:cart-add", fired by the script (bubbles from the root) */
  onCartAdd?: (event: CustomEvent) => void;
  /** "kodza:cart-update", fired by the script (bubbles from the root) */
  onCartUpdate?: (event: CustomEvent) => void;
  /** "kodza:cart-open", fired by the script (bubbles from the root) */
  onCartOpen?: (event: CustomEvent) => void;
  className?: string;
};

export function StickyBuyBar({ until = "footer", vars, onCartChange, onCartAdd, onCartUpdate, onCartOpen, className, style, ...rest }: StickyBuyBarProps) {
  const ref = useRef<ComponentRef<'div'>>(null);
  const classes = ["kodza-sticky-buy-bar", 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, until, 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('./sticky-buy-bar.js').then(() => {
      if (live) document.dispatchEvent(new CustomEvent('kodza:init', { detail: { root } }));
    });
    return () => {
      live = false;
      document.dispatchEvent(new CustomEvent('kodza:destroy', { detail: { root } }));
    };
  }, [key]);

  useEffect(() => {
    const root = ref.current;
    if (!root || !onCartChange) return;
    const listener = (event: Event) => onCartChange(event as CustomEvent);
    root.addEventListener("kodza:cart-change", listener);
    return () => root.removeEventListener("kodza:cart-change", listener);
  }, [onCartChange, key]);

  useEffect(() => {
    const root = ref.current;
    if (!root || !onCartAdd) return;
    const listener = (event: Event) => onCartAdd(event as CustomEvent);
    root.addEventListener("kodza:cart-add", listener);
    return () => root.removeEventListener("kodza:cart-add", listener);
  }, [onCartAdd, key]);

  useEffect(() => {
    const root = ref.current;
    if (!root || !onCartUpdate) return;
    const listener = (event: Event) => onCartUpdate(event as CustomEvent);
    root.addEventListener("kodza:cart-update", listener);
    return () => root.removeEventListener("kodza:cart-update", listener);
  }, [onCartUpdate, key]);

  useEffect(() => {
    const root = ref.current;
    if (!root || !onCartOpen) return;
    const listener = (event: Event) => onCartOpen(event as CustomEvent);
    root.addEventListener("kodza:cart-open", listener);
    return () => root.removeEventListener("kodza:cart-open", listener);
  }, [onCartOpen, key]);

  return (
    <div key={key} {...rest} className={classes} data-kodza-manual data-until={until} style={{ ...vars, ...style } as CSSProperties} ref={ref}>
      <img className="kodza-sticky-buy-bar__image" src="https://kodza.dev/media/shop/kz-shop-chair-chalk-800.webp" width="44" height="44" alt="" decoding="async" />
      <p className="kodza-sticky-buy-bar__info">
        <span className="kodza-sticky-buy-bar__name">Shell Chair</span>
        {' '}
        <span className="kodza-sticky-buy-bar__line">
          <span className="kodza-sticky-buy-bar__variant">
            <span>Chalk</span>
          </span>
          <span className="kodza-sticky-buy-bar__price">
            <span>€390</span>
          </span>
        </span>
      </p>
      <button className="kodza-sticky-buy-bar__add" type="button">
        <span className="kodza-sticky-buy-bar__word">Add to cart</span>
      </button>
    </div>
  );
}