Bootstrap 5 Success Alert Modal with Animated Checkmark

<section class="wdw-stage">
  <div class="container" style="max-width: 920px">
    <div class="text-center mb-5">
      <span class="wdw-eyebrow">Alerts & popups</span>
      <h1 class="h2 wdw-heading mt-1 mb-2">Success message</h1>
      <p class="wdw-muted mb-0">A confirmation dialog for important actions, and a lightweight toast for everything else.</p>
    </div>
    <div class="row g-4 align-items-stretch">
      <div class="col-md-7">
        <p class="small fw-semibold text-body-secondary text-uppercase mb-2">Dialog</p>
        <div class="wdw-card success-modal success-inline text-center p-4 p-md-5 h-100 d-flex flex-column justify-content-center">
          <div class="success-check mx-auto mb-4" aria-hidden="true">
            <svg viewBox="0 0 52 52" width="44" height="44" fill="none" stroke="currentColor" stroke-width="4" stroke-linecap="round" stroke-linejoin="round"><path class="success-tick" d="M14 27l9 9 16-18"/></svg>
          </div>
          <h2 class="h4 wdw-heading mb-2">Payment successful</h2>
          <p class="wdw-muted mb-4">Your order has been placed. A receipt is on its way to your inbox.</p>
          <div class="d-grid gap-2 d-sm-flex justify-content-center">
            <button type="button" class="btn btn-primary rounded-pill px-4">Done</button>
            <button type="button" class="btn btn-outline-primary rounded-pill px-4" data-bs-toggle="modal" data-bs-target="#successModal">Open as modal</button>
          </div>
        </div>
      </div>
      <div class="col-md-5">
        <p class="small fw-semibold text-body-secondary text-uppercase mb-2">Toast</p>
        <div class="wdw-card p-4 h-100 d-flex flex-column justify-content-center gap-4">
          <div class="toast show w-100 bg-body border rounded-4 shadow-sm" role="presentation">
            <div class="toast-body d-flex align-items-center gap-3 fw-semibold">
              <span class="success-dot" aria-hidden="true"><svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5"/></svg></span>
              Changes saved successfully.
            </div>
          </div>
          <button type="button" class="btn btn-outline-primary rounded-pill" id="showToast">Show toast</button>
        </div>
      </div>
    </div>
  </div>

  <div class="modal fade" id="successModal" tabindex="-1" aria-labelledby="successTitle" aria-hidden="true">
    <div class="modal-dialog modal-dialog-centered" style="max-width: 400px">
      <div class="modal-content border-0 text-center p-4 p-md-5 success-modal">
        <div class="success-check mx-auto mb-4" aria-hidden="true">
          <svg viewBox="0 0 52 52" width="44" height="44" fill="none" stroke="currentColor" stroke-width="4" stroke-linecap="round" stroke-linejoin="round"><path class="success-tick" d="M14 27l9 9 16-18"/></svg>
        </div>
        <h2 class="h4 wdw-heading mb-2" id="successTitle">Payment successful</h2>
        <p class="wdw-muted mb-4">Your order has been placed. A receipt is on its way to your inbox.</p>
        <button type="button" class="btn btn-primary rounded-pill w-100" data-bs-dismiss="modal">Done</button>
      </div>
    </div>
  </div>

  <div class="toast-container position-fixed bottom-0 end-0 p-3">
    <div class="toast align-items-center bg-body border rounded-4 shadow" role="status" aria-live="polite" aria-atomic="true" id="successToast">
      <div class="d-flex align-items-center">
        <div class="toast-body d-flex align-items-center gap-3 fw-semibold">
          <span class="success-dot" aria-hidden="true"><svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5"/></svg></span>
          Changes saved successfully.
        </div>
        <button type="button" class="btn-close me-3 m-auto" data-bs-dismiss="toast" aria-label="Close"></button>
      </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 */
.success-modal { border-radius: 1.5rem; box-shadow: var(--wdw-shadow); }
.success-check { width: 5rem; height: 5rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--bs-success); background: var(--bs-success-bg-subtle); box-shadow: 0 0 0 0 rgba(var(--bs-success-rgb), .35); }
.modal.show .success-check, .success-inline .success-check { animation: success-pop .5s cubic-bezier(.2,1.4,.4,1), success-ring 1.2s .3s ease-out; }
.success-tick { stroke-dasharray: 48; stroke-dashoffset: 48; }
.modal.show .success-tick, .success-inline .success-tick { animation: success-draw .45s .3s ease forwards; }
@keyframes success-pop { from { transform: scale(.4); opacity: 0; } }
@keyframes success-draw { to { stroke-dashoffset: 0; } }
@keyframes success-ring { to { box-shadow: 0 0 0 1.5rem rgba(var(--bs-success-rgb), 0); } }
@media (prefers-reduced-motion: reduce) { .modal.show .success-check, .modal.show .success-tick, .success-inline .success-tick { animation: none; stroke-dashoffset: 0; } }
.success-dot { width: 1.75rem; height: 1.75rem; flex: none; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; color: var(--bs-success); background: var(--bs-success-bg-subtle); }

function initSuccessAlert() {
  const btn = document.getElementById('showToast');
  const toastEl = document.getElementById('successToast');
  if (!btn || !toastEl) return;
  btn.addEventListener('click', () => bootstrap.Toast.getOrCreateInstance(toastEl, { delay: 3500 }).show());
}
initSuccessAlert();