Bootstrap 5 Photo Grid List with Scroll and Layout Toggle

<section class="wdw-stage">
  <div class="container" style="max-width: 960px;">
    <div class="wdw-card p-4 p-md-5" id="gridlist">
      <div class="d-flex flex-wrap align-items-end justify-content-between gap-3 mb-4">
        <div>
          <span class="wdw-eyebrow">October</span>
          <h2 class="wdw-heading h3 mb-0">Shared this month</h2>
        </div>
        <div class="btn-group" role="group" aria-label="Layout">
          <input type="radio" class="btn-check" name="gl-view" id="gl-grid" autocomplete="off" checked>
          <label class="btn btn-outline-primary rounded-start-pill px-4" for="gl-grid">Grid</label>
          <input type="radio" class="btn-check" name="gl-view" id="gl-list" autocomplete="off">
          <label class="btn btn-outline-primary rounded-end-pill px-4" for="gl-list">List</label>
        </div>
      </div>
      <div class="gl-scroll" tabindex="0" role="region" aria-label="Photo list">
        <div class="row g-3" id="gl-row">
        <div class="col-6 col-md-4 col-xl-3 gl-item">
          <a href="#" class="gl-tile d-block position-relative overflow-hidden rounded-4 text-decoration-none" aria-label="Forest morning by maya.k">
            <img src="https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=500&q=70" alt="Forest morning" loading="lazy">
            <span class="gl-cap"><strong class="d-block">Forest morning</strong><small>by maya.k</small></span>
          </a>
        </div>
        <div class="col-6 col-md-4 col-xl-3 gl-item">
          <a href="#" class="gl-tile d-block position-relative overflow-hidden rounded-4 text-decoration-none" aria-label="Valley light by john99">
            <img src="https://images.unsplash.com/photo-1506744038136-46273834b3fb?auto=format&fit=crop&w=500&q=70" alt="Valley light" loading="lazy">
            <span class="gl-cap"><strong class="d-block">Valley light</strong><small>by john99</small></span>
          </a>
        </div>
        <div class="col-6 col-md-4 col-xl-3 gl-item">
          <a href="#" class="gl-tile d-block position-relative overflow-hidden rounded-4 text-decoration-none" aria-label="Golden hour by agnes19">
            <img src="https://images.unsplash.com/photo-1469474968028-56623f02e42e?auto=format&fit=crop&w=500&q=70" alt="Golden hour" loading="lazy">
            <span class="gl-cap"><strong class="d-block">Golden hour</strong><small>by agnes19</small></span>
          </a>
        </div>
        <div class="col-6 col-md-4 col-xl-3 gl-item">
          <a href="#" class="gl-tile d-block position-relative overflow-hidden rounded-4 text-decoration-none" aria-label="Misty pines by lena.r">
            <img src="https://images.unsplash.com/photo-1470071459604-3b5ec3a7fe05?auto=format&fit=crop&w=500&q=70" alt="Misty pines" loading="lazy">
            <span class="gl-cap"><strong class="d-block">Misty pines</strong><small>by lena.r</small></span>
          </a>
        </div>
        <div class="col-6 col-md-4 col-xl-3 gl-item">
          <a href="#" class="gl-tile d-block position-relative overflow-hidden rounded-4 text-decoration-none" aria-label="Lake reflection by tom_b">
            <img src="https://images.unsplash.com/photo-1501785888041-af3ef285b470?auto=format&fit=crop&w=500&q=70" alt="Lake reflection" loading="lazy">
            <span class="gl-cap"><strong class="d-block">Lake reflection</strong><small>by tom_b</small></span>
          </a>
        </div>
        <div class="col-6 col-md-4 col-xl-3 gl-item">
          <a href="#" class="gl-tile d-block position-relative overflow-hidden rounded-4 text-decoration-none" aria-label="Winter peaks by sara.v">
            <img src="https://images.unsplash.com/photo-1519681393784-d120267933ba?auto=format&fit=crop&w=500&q=70" alt="Winter peaks" loading="lazy">
            <span class="gl-cap"><strong class="d-block">Winter peaks</strong><small>by sara.v</small></span>
          </a>
        </div>
        <div class="col-6 col-md-4 col-xl-3 gl-item">
          <a href="#" class="gl-tile d-block position-relative overflow-hidden rounded-4 text-decoration-none" aria-label="Quiet shore by dan.o">
            <img src="https://images.unsplash.com/photo-1507525428034-b723cf961d3e?auto=format&fit=crop&w=500&q=70" alt="Quiet shore" loading="lazy">
            <span class="gl-cap"><strong class="d-block">Quiet shore</strong><small>by dan.o</small></span>
          </a>
        </div>
        <div class="col-6 col-md-4 col-xl-3 gl-item">
          <a href="#" class="gl-tile d-block position-relative overflow-hidden rounded-4 text-decoration-none" aria-label="High ridge by ivy.s">
            <img src="https://images.unsplash.com/photo-1464822759023-fed622ff2c3b?auto=format&fit=crop&w=500&q=70" alt="High ridge" loading="lazy">
            <span class="gl-cap"><strong class="d-block">High ridge</strong><small>by ivy.s</small></span>
          </a>
        </div>
        </div>
      </div>
    </div>
  </div>
</section>

/* 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 */
#gridlist .gl-scroll { max-height: 420px; overflow-y: auto; padding-right: .5rem; scroll-behavior: smooth; scroll-snap-type: y proximity; scrollbar-width: thin; scrollbar-color: var(--bs-primary) transparent; }
#gridlist .gl-scroll::-webkit-scrollbar { width: 8px; }
#gridlist .gl-scroll::-webkit-scrollbar-thumb { background: var(--bs-primary); border-radius: 8px; }
#gridlist .gl-item { scroll-snap-align: start; }
#gridlist .gl-tile { aspect-ratio: 4 / 5; background: var(--bs-tertiary-bg); }
#gridlist .gl-tile img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
#gridlist .gl-tile:hover img { transform: scale(1.06); }
#gridlist .gl-cap { position: absolute; inset: auto 0 0 0; padding: 2.5rem .875rem .75rem; color: #fff; line-height: 1.25; background: linear-gradient(to top, rgba(10,10,20,.78), transparent); }
#gridlist .gl-cap small { opacity: .85; }
/* list layout */
#gridlist.is-list .gl-item { width: 100%; flex: 0 0 100%; }
#gridlist.is-list .gl-tile { aspect-ratio: 16 / 5; }
#gridlist.is-list .gl-cap { padding-top: 1.5rem; }

(function () {
  function initGridList() {
    var root = document.getElementById('gridlist');
    if (!root) return;
    root.querySelectorAll('input[name="gl-view"]').forEach(function (r) {
      r.addEventListener('change', function () {
        root.classList.toggle('is-list', r.id === 'gl-list' && r.checked);
      });
    });
    root.querySelectorAll('.gl-tile').forEach(function (a) {
      a.addEventListener('click', function (e) { e.preventDefault(); });
    });
  }
  initGridList();
})();