Bootstrap 5 Toggle Radio Buttons with Labels

<section class="wdw-stage tr-root" id="trRoot">
  <div class="container" style="max-width:920px">
    <div class="text-center mb-4">
      <span class="wdw-eyebrow mb-2">Preferences</span>
      <h2 class="wdw-heading h2">Pick one from each group</h2>
    </div>
    <div class="row g-4">
      <div class="col-md-6">
        <div class="wdw-card p-4 p-md-5 h-100">
          <fieldset>
            <legend class="h6 fw-bold mb-3">Billing cycle</legend>
            <div class="d-flex flex-wrap gap-2">
              <input type="radio" class="btn-check" name="tr1" id="tr1a" autocomplete="off" value="monthly" checked><label class="btn btn-outline-primary rounded-pill px-4" for="tr1a">Monthly</label>
              <input type="radio" class="btn-check" name="tr1" id="tr1b" autocomplete="off" value="yearly"><label class="btn btn-outline-primary rounded-pill px-4" for="tr1b">Yearly <span class="badge text-bg-success rounded-pill">-20%</span></label>
            </div>
          </fieldset>
          <div class="mt-4 pt-4 border-top" aria-live="polite">
            <div class="d-flex align-items-baseline gap-2"><span class="display-5 fw-bold text-body-emphasis" id="trPrice">$24</span><span class="wdw-muted">/ month</span></div>
            <p class="small wdw-muted mb-0" id="trNote">Billed monthly. Cancel anytime.</p>
          </div>
        </div>
      </div>
      <div class="col-md-6">
        <div class="wdw-card p-4 p-md-5 h-100">
          <fieldset>
            <legend class="h6 fw-bold mb-3">Theme</legend>
            <div class="d-flex flex-wrap gap-2">
              <input type="radio" class="btn-check" name="tr2" id="tr2a" autocomplete="off" value="light"><label class="btn btn-outline-primary rounded-pill px-4" for="tr2a"><svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.75" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><circle cx="12" cy="12" r="4"/><path d="M12 2v2M12 20v2M4.9 4.9l1.4 1.4M17.7 17.7l1.4 1.4M2 12h2M20 12h2M4.9 19.1l1.4-1.4M17.7 6.3l1.4-1.4"/></svg> Light</label>
              <input type="radio" class="btn-check" name="tr2" id="tr2b" autocomplete="off" value="dark"><label class="btn btn-outline-primary rounded-pill px-4" for="tr2b"><svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.75" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="M21 12.8A9 9 0 1 1 11.2 3a7 7 0 0 0 9.8 9.8z"/></svg> Dark</label>
            </div>
          </fieldset>
          <div class="mt-4 pt-4 border-top">
            <p class="mb-1 fw-semibold text-body-emphasis">Interface appearance</p>
            <p class="small wdw-muted mb-0" id="trThemeNote">Switches this preview between light and dark.</p>
          </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 */
.tr-root { color: var(--bs-body-color); background-color: var(--wdw-stage); transition: background-color .2s; }
.tr-root .btn-outline-primary { --bs-btn-hover-color: #fff; --bs-btn-active-color: #fff; }
[data-bs-theme="dark"].tr-root .btn-outline-primary { --bs-btn-hover-color: #0f1117; --bs-btn-active-color: #0f1117; }
.tr-root .btn-check:focus-visible + .btn { outline: 3px solid var(--bs-focus-ring-color); outline-offset: 2px; }

function initBillingToggle() {
  const price = document.getElementById('trPrice');
  const note = document.getElementById('trNote');
  const radios = document.querySelectorAll('input[name="tr1"]');
  if (!price || !note || !radios.length) return;
  const plans = {
    monthly: ['$24', 'Billed monthly. Cancel anytime.'],
    yearly: ['$19', 'Billed $230 once a year. You save $58.'],
  };
  radios.forEach((r) => r.addEventListener('change', () => {
    if (!r.checked) return;
    price.textContent = plans[r.value][0];
    note.textContent = plans[r.value][1];
  }));
}

function initThemeToggle() {
  const root = document.getElementById('trRoot');
  const radios = document.querySelectorAll('input[name="tr2"]');
  if (!root || !radios.length) return;
  const host = root.closest('[data-bs-theme]');
  const current = host && host.getAttribute('data-bs-theme') === 'dark' ? 'dark' : 'light';
  const apply = (t) => root.setAttribute('data-bs-theme', t);
  apply(current);
  radios.forEach((r) => {
    r.checked = r.value === current;
    r.addEventListener('change', () => r.checked && apply(r.value));
  });
}

initBillingToggle();
initThemeToggle();