Bootstrap 5 Carousel with Scaling and Sliding Slides

<section class="wdw-stage overflow-hidden">
  <div class="container text-center" style="max-width: 1100px">
    <span class="wdw-eyebrow">Gallery</span>
    <h1 class="wdw-heading h2 mt-1 mb-4">Scaling carousel</h1>
    <div class="cv" id="cv" role="region" aria-roledescription="carousel" aria-label="Landscape photos" tabindex="0">
      <div class="cv-track">
        <figure class="cv-slide" role="group" aria-roledescription="slide" aria-label="1 of 5">
          <img src="https://images.unsplash.com/photo-1506744038136-46273834b3fb?auto=format&fit=crop&w=900&q=75" alt="Alpine valley" loading="eager">
          <figcaption><strong>Alpine valley</strong><span>Alps, Switzerland</span></figcaption>
        </figure>
        <figure class="cv-slide" role="group" aria-roledescription="slide" aria-label="2 of 5">
          <img src="https://images.unsplash.com/photo-1469474968028-56623f02e42e?auto=format&fit=crop&w=900&q=75" alt="Misty sunrise valley" loading="eager">
          <figcaption><strong>Misty sunrise valley</strong><span>Dolomites, Italy</span></figcaption>
        </figure>
        <figure class="cv-slide" role="group" aria-roledescription="slide" aria-label="3 of 5">
          <img src="https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=900&q=75" alt="Sunlit forest path" loading="eager">
          <figcaption><strong>Sunlit forest path</strong><span>Black Forest, Germany</span></figcaption>
        </figure>
        <figure class="cv-slide" role="group" aria-roledescription="slide" aria-label="4 of 5">
          <img src="https://images.unsplash.com/photo-1470071459604-3b5ec3a7fe05?auto=format&fit=crop&w=900&q=75" alt="Foggy ridge at dawn" loading="lazy">
          <figcaption><strong>Foggy ridge at dawn</strong><span>Lake District, UK</span></figcaption>
        </figure>
        <figure class="cv-slide" role="group" aria-roledescription="slide" aria-label="5 of 5">
          <img src="https://images.unsplash.com/photo-1501785888041-af3ef285b470?auto=format&fit=crop&w=900&q=75" alt="Lake and mountains" loading="lazy">
          <figcaption><strong>Lake and mountains</strong><span>Lake Bled, Slovenia</span></figcaption>
        </figure>
      </div>
      <button type="button" class="btn cv-nav cv-prev" aria-label="Previous slide"><i class="bi bi-arrow-left"></i></button>
      <button type="button" class="btn cv-nav cv-next" aria-label="Next slide"><i class="bi bi-arrow-right"></i></button>
    </div>
    <div class="cv-dots d-flex justify-content-center gap-2 mt-4" id="cvDots">
<button type="button" class="cv-dot" aria-label="Go to slide 1"></button>
<button type="button" class="cv-dot" aria-label="Go to slide 2"></button>
<button type="button" class="cv-dot" aria-label="Go to slide 3"></button>
<button type="button" class="cv-dot" aria-label="Go to slide 4"></button>
<button type="button" class="cv-dot" aria-label="Go to slide 5"></button>
    </div>
  </div>
</section>

@import url("https://cdnjs.cloudflare.com/ajax/libs/bootstrap-icons/1.11.3/font/bootstrap-icons.min.css");
/* Web Designer Wall library style — shared base for every Bootstrap 5 snippet.
   Indigo accent, Plus Jakarta Sans, soft cards, pill buttons. Works in light and dark. */
@import url("https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap");

:root,
[data-bs-theme="light"] {
  --wdw-font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --bs-body-font-family: var(--wdw-font);
  --bs-primary: #4f46e5;
  --bs-primary-rgb: 79, 70, 229;
  --bs-primary-text-emphasis: #3730a3;
  --bs-primary-bg-subtle: #eef2ff;
  --bs-primary-border-subtle: #c7d2fe;
  --bs-link-color: #4f46e5;
  --bs-link-color-rgb: 79, 70, 229;
  --bs-link-hover-color: #4338ca;
  --bs-link-hover-color-rgb: 67, 56, 202;
  --bs-focus-ring-color: rgba(79, 70, 229, 0.25);
  --bs-border-radius: 0.75rem;
  --bs-border-radius-lg: 1rem;
  --bs-border-radius-xl: 1.25rem;
  --wdw-radius-card: 1.25rem;
  --wdw-shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 16px 40px -16px rgba(16, 24, 40, 0.22);
  --wdw-shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06), 0 4px 12px -4px rgba(16, 24, 40, 0.12);
  --wdw-stage: #f5f6fb;
}

[data-bs-theme="dark"] {
  --bs-primary: #818cf8;
  --bs-primary-rgb: 129, 140, 248;
  --bs-primary-text-emphasis: #c7d2fe;
  --bs-primary-bg-subtle: rgba(129, 140, 248, 0.14);
  --bs-primary-border-subtle: rgba(129, 140, 248, 0.35);
  --bs-link-color: #a5b4fc;
  --bs-link-color-rgb: 165, 180, 252;
  --bs-link-hover-color: #c7d2fe;
  --bs-link-hover-color-rgb: 199, 210, 254;
  --bs-focus-ring-color: rgba(129, 140, 248, 0.35);
  --wdw-shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 16px 40px -16px rgba(0, 0, 0, 0.7);
  --wdw-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4), 0 4px 12px -4px rgba(0, 0, 0, 0.5);
  --wdw-stage: #0f1117;
}

body { font-family: var(--wdw-font); -webkit-font-smoothing: antialiased; }

/* Bootstrap compiles its blue into these components; point them at the accent. */
.btn-primary {
  --bs-btn-bg: var(--bs-primary); --bs-btn-border-color: var(--bs-primary);
  --bs-btn-hover-bg: #4338ca; --bs-btn-hover-border-color: #4338ca;
  --bs-btn-active-bg: #3730a3; --bs-btn-active-border-color: #3730a3;
  --bs-btn-disabled-bg: var(--bs-primary); --bs-btn-disabled-border-color: var(--bs-primary);
  --bs-btn-focus-shadow-rgb: var(--bs-primary-rgb);
}
[data-bs-theme="dark"] .btn-primary { --bs-btn-color: #0f1117; --bs-btn-hover-bg: #a5b4fc; --bs-btn-hover-border-color: #a5b4fc; --bs-btn-hover-color: #0f1117; --bs-btn-active-color: #0f1117; }
.btn-outline-primary {
  --bs-btn-color: var(--bs-primary); --bs-btn-border-color: var(--bs-primary);
  --bs-btn-hover-bg: var(--bs-primary); --bs-btn-hover-border-color: var(--bs-primary);
  --bs-btn-active-bg: var(--bs-primary); --bs-btn-active-border-color: var(--bs-primary);
  --bs-btn-focus-shadow-rgb: var(--bs-primary-rgb);
}
.btn { --bs-btn-font-weight: 600; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: .5rem; }
.btn-sm { min-height: 36px; }
.form-control, .form-select { min-height: 44px; border-radius: .75rem; }
.form-control:focus, .form-select:focus, .form-check-input:focus { border-color: rgba(var(--bs-primary-rgb), .6); box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); }
.form-check-input:checked { background-color: var(--bs-primary); border-color: var(--bs-primary); }
.nav-pills { --bs-nav-pills-link-active-bg: var(--bs-primary); }
.nav { --bs-nav-link-color: var(--bs-secondary-color); --bs-nav-link-hover-color: var(--bs-emphasis-color); }
.pagination { --bs-pagination-active-bg: var(--bs-primary); --bs-pagination-active-border-color: var(--bs-primary); --bs-pagination-color: var(--bs-body-color); --bs-pagination-focus-box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); }
.progress, .progress-stacked { --bs-progress-bar-bg: var(--bs-primary); }
.list-group { --bs-list-group-active-bg: var(--bs-primary); --bs-list-group-active-border-color: var(--bs-primary); }
.dropdown-menu { --bs-dropdown-link-active-bg: var(--bs-primary); border-radius: .875rem; box-shadow: var(--wdw-shadow-sm); }
.accordion { --bs-accordion-active-bg: var(--bs-primary-bg-subtle); --bs-accordion-active-color: var(--bs-primary-text-emphasis); --bs-accordion-btn-focus-box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); }
.badge { font-weight: 600; }

/* Library building blocks — use these instead of re-inventing them per snippet. */
.wdw-stage { min-height: 100vh; display: flex; align-items: center; background: var(--wdw-stage); padding-block: 3rem; }
.wdw-card { background: var(--bs-body-bg); border: 1px solid var(--bs-border-color-translucent); border-radius: var(--wdw-radius-card); box-shadow: var(--wdw-shadow); }
.wdw-card-sm { background: var(--bs-body-bg); border: 1px solid var(--bs-border-color-translucent); border-radius: 1rem; box-shadow: var(--wdw-shadow-sm); }
.wdw-aurora { position: relative; color: #fff; background: radial-gradient(60% 55% at 100% 0, #818cf8 0, transparent 70%), radial-gradient(65% 60% at 0 100%, #ec4899 0, transparent 65%), #1e1b4b; }
.wdw-eyebrow { display: inline-block; font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--bs-primary); }
.wdw-heading { font-weight: 800; letter-spacing: -.02em; color: var(--bs-emphasis-color); }
.wdw-muted { color: var(--bs-secondary-color); }
.wdw-icon { width: 2.75rem; height: 2.75rem; flex: none; display: inline-flex; align-items: center; justify-content: center; border-radius: .875rem; background: var(--bs-primary-bg-subtle); color: var(--bs-primary); }

/* Component */
.cv { position: relative; height: clamp(260px, 42vw, 400px); outline: 0; }
.cv:focus-visible { box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); border-radius: 1rem; }
.cv-track { position: absolute; inset: 0; }
.cv-slide { --x: 0; --s: 1; position: absolute; top: 0; left: 50%; width: clamp(240px, 56%, 560px); height: 100%; margin: 0; border-radius: 1.25rem; overflow: hidden; background: var(--bs-secondary-bg); box-shadow: var(--wdw-shadow); transform: translateX(calc(-50% + var(--x) * 62%)) scale(var(--s)); opacity: 1; transition: transform .55s cubic-bezier(.3,.8,.2,1), opacity .4s, filter .4s; z-index: 1; }
.cv-slide img { width: 100%; height: 100%; object-fit: cover; display: block; }
.cv-slide figcaption { position: absolute; inset: auto 0 0 0; padding: 2.5rem 1.25rem 1rem; display: flex; flex-direction: column; text-align: left; color: #fff; background: linear-gradient(transparent, rgba(10,10,30,.75)); transition: opacity .3s; }
.cv-slide figcaption span { font-size: .85rem; opacity: .85; }
.cv-slide[data-pos="0"] { z-index: 3; }
.cv-slide[data-pos="-1"], .cv-slide[data-pos="1"] { --s: .78; z-index: 2; filter: saturate(.7) brightness(.85); cursor: pointer; }
.cv-slide[data-pos="-1"] { --x: -1; }
.cv-slide[data-pos="1"] { --x: 1; }
.cv-slide[data-pos="-1"] figcaption, .cv-slide[data-pos="1"] figcaption { opacity: 0; }
.cv-slide[data-pos="far"] { --s: .6; opacity: 0; pointer-events: none; }
.cv-nav { position: absolute; top: 50%; z-index: 5; width: 48px; min-height: 48px; padding: 0; border-radius: 50%; background: var(--bs-body-bg); color: var(--bs-emphasis-color); box-shadow: var(--wdw-shadow-sm); border: 1px solid var(--bs-border-color-translucent); font-size: 1.1rem; transform: translateY(-50%); }
.cv-nav:hover { background: var(--bs-primary); color: #fff; }
.cv-prev { left: 0; } .cv-next { right: 0; }
.cv-dot { width: 10px; height: 10px; padding: 0; border: 0; border-radius: 999px; background: var(--bs-border-color); transition: width .3s, background-color .3s; position: relative; }
.cv-dot::before { content: ""; position: absolute; inset: -17px -4px; }
.cv-dot[aria-current="true"] { width: 28px; background: var(--bs-primary); }
@media (max-width: 575.98px) { .cv-slide { width: 72%; } .cv-slide[data-pos="-1"] { --x: -.9; } .cv-slide[data-pos="1"] { --x: .9; } .cv-nav { width: 44px; min-height: 44px; } }
@media (prefers-reduced-motion: reduce) { .cv-slide { transition: none; } }

(function () {
  var root = document.getElementById('cv');
  if (!root) return;
  var slides = Array.prototype.slice.call(root.querySelectorAll('.cv-slide'));
  var dots = Array.prototype.slice.call(document.querySelectorAll('#cvDots .cv-dot'));
  var n = slides.length;
  var current = 0;

  function render() {
    slides.forEach(function (s, i) {
      var d = ((i - current + n + Math.floor(n / 2)) % n) - Math.floor(n / 2);
      s.dataset.pos = Math.abs(d) > 1 ? 'far' : String(d);
      s.setAttribute('aria-hidden', d !== 0);
    });
    dots.forEach(function (b, i) {
      if (i === current) b.setAttribute('aria-current', 'true'); else b.removeAttribute('aria-current');
    });
  }
  function go(i) { current = (i + n) % n; render(); }

  function initControls() {
    root.querySelector('.cv-prev').addEventListener('click', function () { go(current - 1); });
    root.querySelector('.cv-next').addEventListener('click', function () { go(current + 1); });
    dots.forEach(function (b, i) { b.addEventListener('click', function () { go(i); }); });
    slides.forEach(function (s, i) { s.addEventListener('click', function () { if (i !== current) go(i); }); });
    root.addEventListener('keydown', function (e) {
      if (e.key === 'ArrowLeft') go(current - 1);
      if (e.key === 'ArrowRight') go(current + 1);
    });
  }

  function initSwipe() {
    var x0 = null;
    root.addEventListener('pointerdown', function (e) { x0 = e.clientX; });
    root.addEventListener('pointerup', function (e) {
      if (x0 === null) return;
      var dx = e.clientX - x0;
      x0 = null;
      if (Math.abs(dx) > 40) go(current + (dx < 0 ? 1 : -1));
    });
    root.addEventListener('pointercancel', function () { x0 = null; });
  }

  initControls();
  initSwipe();
  render();
})();