Bootstrap 5 Date and Time Picker for Booking

<section class="wdw-stage">
  <div class="container" style="max-width:860px">
    <div class="wdw-card overflow-hidden" id="booker">
      <div class="row g-0">
        <div class="col-md-4 wdw-aurora p-4 p-md-4 d-flex flex-column gap-3">
          <img src="https://i.pravatar.cc/120?img=47" alt="Dr. Maya Lindqvist" width="56" height="56" class="rounded-circle border border-2 border-white border-opacity-50">
          <div>
            <p class="small text-uppercase fw-semibold opacity-75 mb-1" style="letter-spacing:.08em">Book a session</p>
            <h1 class="h4 fw-bold mb-1">30-min consultation</h1>
            <p class="small opacity-75 mb-0">with Dr. Maya Lindqvist</p>
          </div>
          <ul class="list-unstyled small mt-auto mb-0 d-grid gap-2 opacity-75">
            <li>Video call, link sent by email</li>
            <li>Free cancellation up to 24h before</li>
          </ul>
        </div>
        <div class="col-md-8 p-4">
          <div class="d-flex align-items-center justify-content-between mb-3">
            <h2 class="h6 fw-bold mb-0" data-month>Select a date</h2>
            <div class="btn-group btn-group-sm">
              <button type="button" class="btn btn-outline-secondary rounded-start-pill px-3" data-week="-1" aria-label="Previous week">‹</button>
              <button type="button" class="btn btn-outline-secondary rounded-end-pill px-3" data-week="1" aria-label="Next week">›</button>
            </div>
          </div>
          <div class="d-flex gap-2 mb-4 days" role="radiogroup" aria-label="Date" data-days></div>

          <h2 class="h6 fw-bold mb-3">Available times</h2>
          <div class="row row-cols-3 row-cols-sm-4 g-2 mb-4" role="radiogroup" aria-label="Time" data-times></div>

          <div class="d-flex flex-column flex-sm-row align-items-sm-center justify-content-between gap-3 pt-3 border-top">
            <p class="mb-0 small text-body-secondary" data-summary role="status" aria-live="polite">Choose a date and time.</p>
            <button type="button" class="btn btn-primary rounded-pill px-4" data-confirm disabled>Confirm booking</button>
          </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 */
#booker .days { overflow-x: auto; padding-bottom: .25rem; scrollbar-width: thin; }
#booker .day { flex: 1 0 3.5rem; min-height: 4.5rem; flex-direction: column; gap: 0; border-radius: 1rem; line-height: 1.2; }
#booker .day small { font-size: .7rem; text-transform: uppercase; letter-spacing: .05em; opacity: .75; }
#booker .day b { font-size: 1.2rem; }
#booker .btn-outline-secondary { --bs-btn-color: var(--bs-body-color); --bs-btn-border-color: var(--bs-border-color); --bs-btn-hover-bg: var(--bs-tertiary-bg); --bs-btn-hover-color: var(--bs-emphasis-color); --bs-btn-hover-border-color: var(--bs-border-color); }
#booker .btn-check:checked + .btn.slot, #booker .btn-check:checked + .btn.day { background: var(--bs-primary); border-color: var(--bs-primary); color: #fff; }
[data-bs-theme="dark"] #booker .btn-check:checked + .btn { color: #0f1117; }
#booker .btn-check:disabled + .btn { text-decoration: line-through; opacity: .4; }

function initBooker() {
  const root = document.getElementById('booker');
  if (!root) return;
  const daysEl = root.querySelector('[data-days]');
  const timesEl = root.querySelector('[data-times]');
  const summary = root.querySelector('[data-summary]');
  const confirmBtn = root.querySelector('[data-confirm]');
  const month = root.querySelector('[data-month]');
  const slots = ['9:00 AM', '9:30 AM', '10:00 AM', '10:30 AM', '11:00 AM', '11:30 AM', '1:00 PM', '1:30 PM', '2:00 PM', '2:30 PM', '3:00 PM', '4:15 PM'];
  const start = new Date(); start.setHours(0, 0, 0, 0);
  let offset = 0, date = null, time = null;

  const el = (html) => { const t = document.createElement('template'); t.innerHTML = html.trim(); return t.content.firstChild; };
  const update = () => {
    confirmBtn.disabled = !(date && time);
    summary.textContent = date && time
      ? date.toLocaleDateString(undefined, { weekday: 'long', month: 'long', day: 'numeric' }) + ' at ' + time
      : date ? 'Now pick a time.' : 'Choose a date and time.';
  };
  const renderTimes = () => {
    timesEl.innerHTML = '';
    slots.forEach((s, i) => {
      const taken = date && (date.getDate() + i) % 5 === 0;
      const col = el('<div class="col"><input type="radio" class="btn-check" name="slot" id="slot' + i + '"' + (taken ? ' disabled' : '') + '><label class="btn btn-outline-secondary slot w-100 rounded-pill px-0" for="slot' + i + '">' + s + '</label></div>');
      col.querySelector('input').addEventListener('change', () => { time = s; update(); });
      timesEl.appendChild(col);
    });
    time = null; update();
  };
  const renderDays = () => {
    daysEl.innerHTML = '';
    const first = new Date(start); first.setDate(start.getDate() + offset * 7);
    month.textContent = first.toLocaleDateString(undefined, { month: 'long', year: 'numeric' });
    for (let i = 0; i < 7; i++) {
      const d = new Date(first); d.setDate(first.getDate() + i);
      const weekend = d.getDay() === 0 || d.getDay() === 6;
      const id = 'day' + i;
      const node = el('<div class="d-contents"><input type="radio" class="btn-check" name="day" id="' + id + '"' + (weekend ? ' disabled' : '') + '><label class="btn btn-outline-secondary day d-flex" for="' + id + '"><small>' + d.toLocaleDateString(undefined, { weekday: 'short' }) + '</small><b>' + d.getDate() + '</b></label></div>');
      node.style.display = 'contents';
      node.querySelector('input').addEventListener('change', () => { date = d; renderTimes(); });
      daysEl.appendChild(node);
    }
    date = null; renderTimes();
  };
  root.querySelectorAll('[data-week]').forEach((b) => b.addEventListener('click', () => {
    offset = Math.max(0, offset + Number(b.dataset.week)); renderDays();
  }));
  confirmBtn.addEventListener('click', () => { summary.textContent = 'Booked: ' + summary.textContent; confirmBtn.disabled = true; confirmBtn.textContent = 'Confirmed'; });
  renderDays();
  root.querySelector('input[name="day"]:not(:disabled)').click();
  timesEl.querySelectorAll('input:not(:disabled)')[2].click();
}
initBooker();