{
  "version": 3,
  "sources": ["/cdn/shop/t/35/assets/lb-home-stack.js?x=27054"],
  "sourcesContent": ["/* Home \"build your setup\" (sections/lb-home-stack.liquid): pre-rendered frames on a canvas, scrubbed by scroll,\n   one frame set per base; the chips switch the set, Add to cart posts the base's product. */\n(function () {\n  var root = document.querySelector('[data-lb-hs]');\n  if (!root) return;\n  var box = root.querySelector('.lb-hs__box'), track = root.querySelector('.lb-hs__track');\n  var canvas = root.querySelector('canvas'), ctx = canvas.getContext('2d');\n  var chips = [].slice.call(root.querySelectorAll('[data-lb-hs-chip]'));\n  var buys = [].slice.call(root.querySelectorAll('[data-lb-hs-buy]'));\n  var stepEls = [].slice.call(root.querySelectorAll('.lb-hs__step'));\n  var dotsBox = root.querySelector('.lb-hs__dots');\n  var reduce = window.matchMedia('(prefers-reduced-motion: reduce)').matches;\n  var START = Math.min(0.9, Math.max(0, parseFloat(root.getAttribute('data-start')) || 0));   // skip this share of the frames: the scroll starts part-way into the animation\n  var HOLD_IN = 0.04, HOLD_OUT = 0.1;               // share of the scroll before the board starts to move / after it has seated\n  var sets = chips.map(function (c) { return { prefix: c.dataset.prefix, n: +c.dataset.count, ext: c.dataset.ext || 'webp', imgs: [], started: false }; });\n  var cur = 0, m = reduce ? 1 : 0, shown = null, seated = false;\n\n  function url(s, i) { return s.prefix + ('000' + i).slice(-3) + '.' + s.ext; }\n  function startIdx(s) { return Math.round(START * (s.n - 1)); }\n  function frame(s) { return Math.round((START + m * (1 - START)) * (s.n - 1)); }\n  function load(s, i) {\n    if (s.imgs[i]) return;\n    var im = new Image(); im.decoding = 'async';\n    im.onload = function () { if (s === sets[cur]) draw(); };\n    im.src = url(s, i); s.imgs[i] = im;\n  }\n  function ready(s, i) { var im = s.imgs[i]; return im && im.complete && im.naturalWidth; }\n  function loadAll(s) {\n    if (s.started) return; s.started = true;\n    var a = startIdx(s); load(s, a); load(s, s.n - 1);\n    var order = [], i, off; for (off = 0; off < 3; off++) for (i = a + 1 + off; i < s.n - 1; i += 3) order.push(i);\n    var k = 0; (function pump() { for (var c = 0; c < 5 && k < order.length; c++) load(s, order[k++]); if (k < order.length) setTimeout(pump, 70); })();\n  }\n  function draw() {\n    var s = sets[cur], want = frame(s), j = want;\n    while (j >= 0 && !ready(s, j)) j--;\n    if (j < 0) { j = want; while (j < s.n && !ready(s, j)) j++; if (j >= s.n) return; }\n    if (shown && shown.s === cur && shown.j === j) return;\n    var im = s.imgs[j];\n    if (canvas.width !== im.naturalWidth || canvas.height !== im.naturalHeight) { canvas.width = im.naturalWidth; canvas.height = im.naturalHeight; }\n    ctx.clearRect(0, 0, canvas.width, canvas.height); ctx.drawImage(im, 0, 0); shown = { s: cur, j: j };\n  }\n  var lastStep = -1;\n  function baseSteps() { return stepEls.filter(function (el) { return +el.dataset.for === cur; }); }\n  function buildDots() {\n    var n = baseSteps().length; dotsBox.innerHTML = '';\n    for (var k = 0; k < n; k++) dotsBox.appendChild(document.createElement('i'));\n    lastStep = -1;\n  }\n  function captions() {\n    var list = baseSteps(), n = list.length || 1;\n    var idx = reduce ? n - 1 : Math.min(n - 1, Math.floor(m * n));\n    if (idx !== lastStep) {\n      lastStep = idx;\n      list.forEach(function (el, k) { el.classList.toggle('is-on', reduce || k === idx); });\n      [].slice.call(dotsBox.children).forEach(function (d, k) { d.classList.toggle('is-on', k <= idx); });\n    }\n    var done = m >= 0.98;\n    if (done !== seated) { seated = done; root.classList.toggle('is-seated', done); }\n  }\n  function choose(i) {\n    cur = i;\n    chips.forEach(function (c, k) { var on = k === i; c.classList.toggle('is-on', on); c.setAttribute('aria-pressed', on ? 'true' : 'false'); });\n    buys.forEach(function (b) { b.hidden = +b.dataset.lbHsBuy !== i; });\n    stepEls.forEach(function (el) { el.hidden = +el.dataset.for !== i; el.classList.remove('is-on'); });\n    buildDots(); loadAll(sets[i]); draw(); captions();\n  }\n  function update() {\n    if (reduce) { draw(); return; }\n    var r = track.getBoundingClientRect(), top = box.getBoundingClientRect().top - r.top;\n    var travel = Math.max(1, r.height - box.offsetHeight);\n    var stuck = parseFloat(getComputedStyle(root).getPropertyValue('--lb-hs-top')) || 0;\n    var p = Math.min(1, Math.max(0, (stuck - r.top) / travel));\n    m = Math.min(1, Math.max(0, (p - HOLD_IN) / (1 - HOLD_IN - HOLD_OUT)));\n    draw(); captions();\n  }\n  var tick = false;\n  function onScroll() { if (tick) return; tick = true; requestAnimationFrame(function () { tick = false; update(); }); }\n\n  chips.forEach(function (c, i) {\n    c.addEventListener('click', function () { choose(i); });\n    ['mouseenter', 'focus', 'touchstart'].forEach(function (ev) { c.addEventListener(ev, function () { loadAll(sets[i]); }, { passive: true }); });\n  });\n\n  function refreshCount() {\n    fetch('/cart.js', { headers: { Accept: 'application/json' } }).then(function (r) { return r.json(); }).then(function (c) {\n      var n = document.querySelector('.header__cart-count');\n      if (n) { n.dataset.n = c.item_count; var num = n.querySelector('.header__cart-count-number'); if (num) num.textContent = c.item_count; }\n      document.dispatchEvent(new CustomEvent('cart:refresh', { detail: c }));\n    }).catch(function () {});\n  }\n  root.addEventListener('click', function (e) {\n    var b = e.target.closest('[data-lb-hs-add]'); if (!b) return;\n    var buy = b.closest('[data-vid]'); b.disabled = true;\n    fetch('/cart/add.js', { method: 'POST', headers: { 'Content-Type': 'application/json', Accept: 'application/json' }, body: JSON.stringify({ items: [{ id: +buy.dataset.vid, quantity: 1 }] }) })\n      .then(function (r) { if (!r.ok) throw new Error('add'); return r.json(); })\n      .then(function () { b.textContent = 'Added \u2713'; refreshCount(); setTimeout(function () { b.textContent = 'Add to cart'; b.disabled = false; }, 1600); })\n      .catch(function () { b.textContent = 'Try again'; b.disabled = false; });\n  });\n\n  if ('IntersectionObserver' in window) {\n    new IntersectionObserver(function (es) { if (es[0].isIntersecting) loadAll(sets[cur]); }, { rootMargin: '1500px 0px' }).observe(root);\n  } else { loadAll(sets[cur]); }\n  load(sets[cur], startIdx(sets[cur]));\n  window.addEventListener('scroll', onScroll, { passive: true });\n  window.addEventListener('resize', onScroll);\n  choose(0); update();\n})();\n"],
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