Bootstrap 5 Sign Up Form with Side Image

<section class="wdw-stage">
  <div class="container" style="max-width:980px">
    <div class="wdw-card overflow-hidden">
      <div class="row g-0">
        <div class="col-lg-5 d-none d-lg-block">
          <div class="su-side h-100 d-flex flex-column justify-content-end p-5 text-white">
            <span class="badge rounded-pill text-bg-light align-self-start mb-3">Members only</span>
            <h2 class="h3 fw-bold mb-2">Live music, closer than ever.</h2>
            <p class="mb-0 opacity-75">Get early access to tickets, backstage drops and member-only events.</p>
          </div>
        </div>
        <div class="col-lg-7">
          <form class="p-4 p-md-5" id="signupForm" novalidate>
            <span class="wdw-eyebrow">Get started</span>
            <h1 class="wdw-heading h2 mt-1 mb-1">Create your account</h1>
            <p class="wdw-muted mb-4">It takes less than a minute.</p>
            <div class="row g-3">
              <div class="col-sm-6">
                <label for="suFirst" class="form-label small fw-semibold">First name</label>
                <input type="text" class="form-control" id="suFirst" autocomplete="given-name" placeholder="Jane" required>
              </div>
              <div class="col-sm-6">
                <label for="suLast" class="form-label small fw-semibold">Last name</label>
                <input type="text" class="form-control" id="suLast" autocomplete="family-name" placeholder="Doe" required>
              </div>
              <div class="col-sm-6">
                <label for="suPhone" class="form-label small fw-semibold">Phone</label>
                <input type="tel" class="form-control" id="suPhone" autocomplete="tel" placeholder="+1 555 010 2030">
              </div>
              <div class="col-sm-6">
                <label for="suEmail" class="form-label small fw-semibold">Email</label>
                <input type="email" class="form-control" id="suEmail" autocomplete="email" placeholder="[email protected]" required>
              </div>
              <div class="col-sm-6">
                <label for="suPass" class="form-label small fw-semibold">Password</label>
                <input type="password" class="form-control" id="suPass" autocomplete="new-password" minlength="8" placeholder="At least 8 characters" required>
              </div>
              <div class="col-sm-6">
                <label for="suPass2" class="form-label small fw-semibold">Confirm password</label>
                <input type="password" class="form-control" id="suPass2" autocomplete="new-password" placeholder="Repeat password" required>
                <div class="invalid-feedback">Passwords do not match.</div>
              </div>
            </div>
            <button type="submit" class="btn btn-primary rounded-pill w-100 mt-4">Create account</button>
            <p class="text-center wdw-muted small mt-3 mb-0" id="suMsg" role="status">Already have an account? <a href="#" class="fw-semibold">Sign in</a></p>
          </form>
        </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 */
.su-side { background: linear-gradient(180deg, rgba(30,27,75,.25) 0%, rgba(30,27,75,.92) 100%), url("https://images.unsplash.com/photo-1514525253161-7a46d19cd819?auto=format&fit=crop&w=800&q=70") center / cover; min-height: 100%; }

(function () {
  function initSignup() {
    var form = document.getElementById('signupForm');
    if (!form) return;
    var p1 = document.getElementById('suPass');
    var p2 = document.getElementById('suPass2');
    var msg = document.getElementById('suMsg');
    function match() { p2.setCustomValidity(p2.value && p1.value !== p2.value ? 'mismatch' : ''); }
    p1.addEventListener('input', match);
    p2.addEventListener('input', match);
    form.addEventListener('submit', function (e) {
      e.preventDefault();
      match();
      form.classList.add('was-validated');
      if (form.checkValidity()) {
        msg.textContent = 'Account created. Welcome aboard!';
        msg.className = 'text-center small mt-3 mb-0 text-success';
      }
    });
  }
  initSignup();
})();