Bootstrap 5 Credit Card Payment Form

<section class="wdw-stage">
  <div class="container" style="max-width: 460px">
    <form class="wdw-card p-4 cc-form" novalidate>
      <div class="d-flex align-items-center justify-content-between mb-3">
        <div>
          <span class="wdw-eyebrow">Secure checkout</span>
          <h2 class="wdw-heading h4 mb-0">Payment details</h2>
        </div>
        <span class="wdw-icon" aria-hidden="true">
          <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.9" stroke-linecap="round" stroke-linejoin="round"><rect x="4" y="11" width="16" height="10" rx="2"/><path d="M8 11V7a4 4 0 0 1 8 0v4"/></svg>
        </span>
      </div>

      <fieldset class="mb-3">
        <legend class="form-label small fw-semibold">Payment method</legend>
        <div class="row g-2 cc-types">
          <div class="col-3"><input type="radio" class="btn-check" name="cc-type" id="cc-visa" value="visa" checked><label class="btn btn-outline-secondary w-100 px-0 fw-bold" for="cc-visa">VISA</label></div>
          <div class="col-3"><input type="radio" class="btn-check" name="cc-type" id="cc-mc" value="mc"><label class="btn btn-outline-secondary w-100 px-0 fw-bold" for="cc-mc" aria-label="Mastercard"><span class="cc-mc" aria-hidden="true"></span></label></div>
          <div class="col-3"><input type="radio" class="btn-check" name="cc-type" id="cc-amex" value="amex"><label class="btn btn-outline-secondary w-100 px-0 fw-bold" for="cc-amex">AMEX</label></div>
          <div class="col-3"><input type="radio" class="btn-check" name="cc-type" id="cc-pp" value="paypal"><label class="btn btn-outline-secondary w-100 px-0 fw-bold" for="cc-pp" aria-label="PayPal"><span>Pay<span class="text-primary">Pal</span></span></label></div>
        </div>
      </fieldset>

      <div class="form-floating mb-3">
        <input type="text" class="form-control" id="cc-name" placeholder="Name on card" autocomplete="cc-name" required>
        <label for="cc-name">Name on card</label>
      </div>
      <div class="form-floating mb-3">
        <input type="text" class="form-control" id="cc-number" placeholder="Card number" inputmode="numeric" autocomplete="cc-number" maxlength="19" pattern="[0-9 ]{13,19}" required>
        <label for="cc-number">Card number</label>
      </div>
      <div class="row g-3 mb-3">
        <div class="col-6"><div class="form-floating">
          <input type="text" class="form-control" id="cc-exp" placeholder="MM/YY" inputmode="numeric" autocomplete="cc-exp" maxlength="5" pattern="(0[1-9]|1[0-2])/[0-9]{2}" required>
          <label for="cc-exp">Expiry (MM/YY)</label></div></div>
        <div class="col-6"><div class="form-floating">
          <input type="text" class="form-control" id="cc-cvv" placeholder="CVV" inputmode="numeric" autocomplete="cc-csc" maxlength="4" pattern="[0-9]{3,4}" required>
          <label for="cc-cvv">CVV</label></div></div>
      </div>

      <dl class="mb-0 pb-3 mb-3 border-bottom small">
        <div class="d-flex justify-content-between mb-1"><dt class="fw-normal wdw-muted">Subtotal</dt><dd class="mb-0 fw-semibold">$3,000.00</dd></div>
        <div class="d-flex justify-content-between mb-1"><dt class="fw-normal wdw-muted">Shipping</dt><dd class="mb-0 fw-semibold">$20.00</dd></div>
        <div class="d-flex justify-content-between"><dt class="fw-bold">Total (incl. taxes)</dt><dd class="mb-0 fw-bold">$3,020.00</dd></div>
      </dl>
      <button type="submit" class="btn btn-primary btn-lg rounded-pill w-100 justify-content-between px-4">
        <span>Pay $3,020.00</span>
        <svg width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M5 12h14M13 6l6 6-6 6"/></svg>
      </button>
      <p class="text-center small wdw-muted mt-3 mb-0" role="status" aria-live="polite" id="cc-status">Payments are encrypted end to end.</p>
    </form>
  </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 */
.cc-types .btn { min-height: 52px; font-size: .8rem; letter-spacing: .02em; }
.cc-types .btn-check:checked + .btn { background: var(--bs-primary-bg-subtle); border-color: var(--bs-primary); color: var(--bs-primary-text-emphasis); box-shadow: 0 0 0 .2rem var(--bs-focus-ring-color); }
.cc-types .btn-check:focus-visible + .btn { box-shadow: 0 0 0 .25rem var(--bs-focus-ring-color); }
.cc-mc { position: relative; width: 34px; height: 22px; display: inline-block; }
.cc-mc::before, .cc-mc::after { content: ""; position: absolute; top: 0; width: 22px; height: 22px; border-radius: 50%; }
.cc-mc::before { left: 0; background: #ef4444; opacity: .9; }
.cc-mc::after { right: 0; background: #f59e0b; opacity: .85; }
.cc-form legend { float: none; width: auto; padding: 0; }
.cc-types .btn { --bs-btn-color: var(--bs-body-color); --bs-btn-border-color: var(--bs-border-color); --bs-btn-hover-color: var(--bs-emphasis-color); --bs-btn-hover-bg: var(--bs-tertiary-bg); --bs-btn-hover-border-color: var(--bs-secondary-color); --bs-btn-active-color: var(--bs-primary-text-emphasis); --bs-btn-active-bg: var(--bs-primary-bg-subtle); --bs-btn-active-border-color: var(--bs-primary); }

function initCardFormat() {
  var num = document.getElementById('cc-number');
  var exp = document.getElementById('cc-exp');
  if (!num || !exp) return;
  num.addEventListener('input', function () {
    var d = num.value.replace(/\D/g, '').slice(0, 16);
    num.value = d.replace(/(.{4})/g, '$1 ').trim();
  });
  exp.addEventListener('input', function () {
    var d = exp.value.replace(/\D/g, '').slice(0, 4);
    exp.value = d.length > 2 ? d.slice(0, 2) + '/' + d.slice(2) : d;
  });
}
function initCardSubmit() {
  var form = document.querySelector('.cc-form');
  var status = document.getElementById('cc-status');
  if (!form) return;
  form.addEventListener('submit', function (e) {
    e.preventDefault();
    var ok = true;
    form.querySelectorAll('input.form-control').forEach(function (i) {
      var v = i.checkValidity();
      i.classList.toggle('is-invalid', !v);
      if (!v) ok = false;
    });
    status.textContent = ok ? 'Payment accepted. Thank you!' : 'Please check the highlighted fields.';
  });
}
initCardFormat();
initCardSubmit();