Bootstrap 5 Error Modal for Failed Upload

<section class="wdw-stage position-relative overflow-hidden">
  <div class="container" style="max-width: 760px">
    <div class="text-center mb-4">
      <span class="wdw-eyebrow">File upload</span>
      <h1 class="wdw-heading display-5 mt-1 mb-0">Upload your files</h1>
    </div>
    <div class="wdw-card p-4 p-md-5">
      <div class="em-drop border border-2 text-center rounded-4 p-4 p-md-5 mb-4">
        <span class="wdw-icon mb-2">
          <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.9" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M12 16V4M7 9l5-5 5 5M4 16v3a1 1 0 001 1h14a1 1 0 001-1v-3"/></svg>
        </span>
        <div class="fw-semibold fs-5">Drag and drop to upload</div>
        <div class="small wdw-muted">PDF, PNG or JPG up to 10 MB</div>
      </div>
      <div class="d-flex align-items-center gap-3 p-3 rounded-3 bg-body-tertiary mb-4">
        <span class="wdw-icon rounded-3" style="width:2.5rem;height:2.5rem">
          <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.9" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M14 3H7a2 2 0 00-2 2v14a2 2 0 002 2h10a2 2 0 002-2V8zM14 3v5h5"/></svg>
        </span>
        <div class="me-auto flex-grow-1" style="min-width:0">
          <div class="fw-semibold small text-truncate">brand-guidelines-v3.pdf</div>
          <div class="small wdw-muted" id="emMeta">4.2 MB</div>
          <div class="progress mt-2 d-none" id="emProgress" style="height:6px" role="progressbar" aria-label="Upload progress" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><div class="progress-bar" id="emBar" style="width:0"></div></div>
        </div>
        <span class="d-flex align-items-center gap-2" id="emStatus">
          <span class="badge bg-danger-subtle text-danger border border-danger-subtle rounded-pill">Failed</span>
          <button type="button" class="btn btn-link btn-sm p-0 px-1" data-em-retry>Retry</button>
        </span>
      </div>
      <button type="button" class="btn btn-primary rounded-pill w-100" id="emUpload" data-em-retry>Upload file</button>
    </div>
  </div>

  <div class="em-scrim d-flex align-items-center justify-content-center p-3" id="emInline">
    <div class="em-modal-content bg-body text-center p-4 p-md-5 position-relative" role="alert">
      <span class="em-badge bg-danger-subtle text-danger mx-auto mb-4"><svg width="32" height="32" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" aria-hidden="true"><path d="M6 6l12 12M18 6L6 18"/></svg></span>
        <h2 class="h3 fw-bold" >Upload failed</h2>
        <p class="wdw-muted mb-4">Something went wrong and brand-guidelines-v3.pdf was not uploaded. Check your connection and try again.</p>
        <div class="d-flex flex-column flex-sm-row gap-2 justify-content-center">
          <button type="button" class="btn btn-primary rounded-pill px-4" data-em-retry>Try again</button>
          <button type="button" class="btn btn-outline-secondary rounded-pill px-4" data-em-cancel>Cancel</button>
        </div>
    </div>
  </div>

  <div class="modal fade em-modal" id="errorModal" tabindex="-1" aria-labelledby="errorModalLabel" aria-hidden="true">
    <div class="modal-dialog modal-dialog-centered" style="max-width: 440px">
      <div class="modal-content border-0 text-center p-4 p-md-5">
        <button type="button" class="btn-close position-absolute top-0 end-0 m-3" data-bs-dismiss="modal" aria-label="Close"></button>
        <span class="em-badge bg-danger-subtle text-danger mx-auto mb-4"><svg width="32" height="32" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" aria-hidden="true"><path d="M6 6l12 12M18 6L6 18"/></svg></span>
        <h2 class="h3 fw-bold" id="errorModalLabel">Upload failed</h2>
        <p class="wdw-muted mb-4">Something went wrong and brand-guidelines-v3.pdf was not uploaded. Check your connection and try again.</p>
        <div class="d-flex flex-column flex-sm-row gap-2 justify-content-center">
          <button type="button" class="btn btn-primary rounded-pill px-4" data-em-retry data-bs-dismiss="modal">Try again</button>
          <button type="button" class="btn btn-outline-secondary rounded-pill px-4" data-em-cancel data-bs-dismiss="modal">Cancel</button>
        </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 */
.em-drop { border-style: dashed !important; background: var(--bs-body-bg); }
.em-badge { width: 4.5rem; height: 4.5rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 0 0 .6rem rgba(var(--bs-danger-rgb), .1); }
.em-modal .modal-content, .em-modal-content { border-radius: 1.5rem; box-shadow: var(--wdw-shadow); }
.em-modal .modal-content { border: 1px solid var(--bs-border-color-translucent) !important; }
.em-scrim { position: absolute; inset: 0; z-index: 5; background: rgba(15, 17, 23, .55); }
.em-scrim[hidden] { display: none !important; }
.em-modal-content { width: 100%; max-width: 440px; border: 1px solid var(--bs-border-color-translucent); }
[data-bs-theme="dark"] .em-modal-content, [data-bs-theme="dark"] .em-modal .modal-content { box-shadow: 0 0 0 1px rgba(255,255,255,.08), 0 24px 60px -12px rgba(0,0,0,.8); }
[data-bs-theme="dark"] .em-scrim { background: rgba(0, 0, 0, .65); }
.btn-outline-secondary { --bs-btn-color: var(--bs-body-color); --bs-btn-border-color: var(--bs-border-color); }

(function () {
  var timer;
  function setStatus(failed) {
    var status = document.getElementById('emStatus');
    var prog = document.getElementById('emProgress');
    var meta = document.getElementById('emMeta');
    status.classList.toggle('d-none', !failed);
    prog.classList.toggle('d-none', failed);
    meta.textContent = failed ? '4.2 MB' : 'Uploading...';
  }

  function initUploadSimulation() {
    var modalEl = document.getElementById('errorModal');
    var inline = document.getElementById('emInline');
    var bar = document.getElementById('emBar');
    var prog = document.getElementById('emProgress');
    var trigger = document.getElementById('emUpload');
    if (!modalEl || !inline || !bar || !trigger) return;
    var modal = bootstrap.Modal.getOrCreateInstance(modalEl);

    function start() {
      clearInterval(timer);
      inline.hidden = true;
      setStatus(false);
      var pct = 0;
      bar.style.width = '0';
      timer = setInterval(function () {
        pct += 7;
        bar.style.width = pct + '%';
        prog.setAttribute('aria-valuenow', pct);
        if (pct >= 62) {
          clearInterval(timer);
          setStatus(true);
          modal.show();
        }
      }, 120);
    }

    document.querySelectorAll('[data-em-retry]').forEach(function (b) {
      b.addEventListener('click', function () {
        if (b.closest('#errorModal')) {
          modalEl.addEventListener('hidden.bs.modal', start, { once: true });
        } else {
          start();
        }
      });
    });
    var cancel = inline.querySelector('[data-em-cancel]');
    cancel.addEventListener('click', function () { inline.hidden = true; trigger.focus(); });
    modalEl.addEventListener('hidden.bs.modal', function () { if (!timer || !prog.classList.contains('d-none')) return; trigger.focus(); });
  }
  initUploadSimulation();
})();