Bootstrap 5 Table with Row and Column Hover Highlight

<section class="ht-section wdw-stage">
  <div class="container">
    <div class="mb-3"><span class="wdw-eyebrow mb-1">Schedule</span><h2 class="h3 wdw-heading mb-1">Weekly shift schedule</h2><p class="text-body-secondary small mb-0">Hover or focus a cell to highlight its row and column.</p></div>
    <div class="wdw-card overflow-hidden">
      <div class="d-flex align-items-center justify-content-between gap-2 px-3 px-lg-4 py-3 border-bottom">
        <div><div class="fw-bold" id="htWeek" aria-live="polite">Week 43</div><div class="small text-body-secondary" id="htRange">Oct 25 – Oct 31</div></div>
        <div class="d-flex gap-2">
          <button type="button" class="btn btn-outline-secondary btn-sm rounded-circle p-0 ht-nav" data-ht-step="-1" aria-label="Previous week"><svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="m15 18-6-6 6-6"/></svg></button>
          <button type="button" class="btn btn-outline-secondary btn-sm rounded-circle p-0 ht-nav" data-ht-step="1" aria-label="Next week"><svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true"><path d="m9 18 6-6-6-6"/></svg></button>
        </div>
      </div>
      <div class="table-responsive">
        <table class="ht-table table table-borderless align-middle text-center mb-0" id="htTable">
          <thead><tr><th scope="col" class="text-start ps-3 ps-lg-4">Employee</th><th scope="col">Sun</th><th scope="col">Mon</th><th scope="col">Tue</th><th scope="col">Wed</th><th scope="col">Thu</th><th scope="col">Fri</th><th scope="col">Sat</th></tr></thead>
<tbody>
<tr><th scope="row" class="text-start ps-3 ps-lg-4 fw-semibold">Lawrence Scott</th><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">8:00 AM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">8:00 AM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-pm">5:00 PM</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">8:00 AM</span></td></tr>
<tr><th scope="row" class="text-start ps-3 ps-lg-4 fw-semibold">Jane Medina</th><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-pm">5:00 PM</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-pm">5:00 PM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">9:00 AM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td></tr>
<tr><th scope="row" class="text-start ps-3 ps-lg-4 fw-semibold">Billy Mitchell</th><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">9:00 AM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-pm">2:00 PM</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">8:00 AM</span></td></tr>
<tr><th scope="row" class="text-start ps-3 ps-lg-4 fw-semibold">Beverly Reid</th><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-pm">5:00 PM</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-pm">5:00 PM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">9:00 AM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td></tr>
<tr><th scope="row" class="text-start ps-3 ps-lg-4 fw-semibold">Tiffany Wade</th><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">8:00 AM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">8:00 AM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-pm">5:00 PM</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">8:00 AM</span></td></tr>
<tr><th scope="row" class="text-start ps-3 ps-lg-4 fw-semibold">Sean Adams</th><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-pm">5:00 PM</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-pm">5:00 PM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">9:00 AM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td></tr>
<tr><th scope="row" class="text-start ps-3 ps-lg-4 fw-semibold">Rachel Simpson</th><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">9:00 AM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-pm">2:00 PM</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">8:00 AM</span></td></tr>
<tr><th scope="row" class="text-start ps-3 ps-lg-4 fw-semibold">Mark Salazar</th><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">8:00 AM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">8:00 AM</span></td><td tabindex="0"><span class="text-body-tertiary" aria-label="Off">–</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-pm">5:00 PM</span></td><td tabindex="0"><span class="badge rounded-pill ht-shift ht-am">8:00 AM</span></td></tr>
</tbody></table></div></div>
    <p class="small text-body-secondary text-center mt-2 mb-0 d-md-none">Swipe the table sideways to see every day</p></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 */
.ht-table { --ht-hl: color-mix(in srgb, var(--bs-primary) 8%, transparent); --ht-cell: color-mix(in srgb, var(--bs-primary) 20%, transparent); --bs-table-bg: transparent; }
.ht-table thead th { font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: var(--bs-secondary-color); background: var(--bs-tertiary-bg); padding: .85rem .5rem; }
.ht-table td, .ht-table tbody th { padding: .8rem .5rem; min-width: 88px; transition: background-color .12s; border-bottom: 1px solid color-mix(in srgb, var(--bs-border-color) 55%, transparent); }
.ht-table tbody tr:last-child td, .ht-table tbody tr:last-child th { border-bottom: 0; }
.ht-table tbody th { min-width: 160px; background-clip: padding-box; }
.ht-table :where(td:nth-child(2), td:nth-child(8)) { background-color: color-mix(in srgb, var(--bs-tertiary-bg) 70%, transparent); }
.ht-table td:focus-visible { outline: 2px solid var(--bs-primary); outline-offset: -2px; }
.ht-table td.ht-hl, .ht-table th.ht-hl { background-color: var(--ht-hl); }
.ht-table td.ht-cell { background-color: var(--ht-cell); box-shadow: inset 0 0 0 2px var(--bs-primary); border-radius: .5rem; }
.ht-shift { font-weight: 600; padding: .45em .8em; }
.ht-am { background: var(--bs-primary-bg-subtle); color: var(--bs-primary-text-emphasis); border: 1px solid var(--bs-primary-border-subtle); }
.ht-pm { background: var(--bs-body-bg); color: var(--bs-body-color); border: 1px solid var(--bs-border-color); }
.ht-nav { width: 36px; height: 36px; min-height: 36px; }
@media (max-width: 767.98px) {
  .ht-table td { min-width: 62px; padding: .7rem .25rem; }
  .ht-table .ht-shift { font-size: .66rem; padding: .4em .55em; }
  .ht-table tbody th, .ht-table thead th:first-child { position: sticky; left: 0; z-index: 2; min-width: 112px; max-width: 112px; font-size: .85rem; background-color: var(--bs-body-bg); box-shadow: 6px 0 8px -6px rgba(16, 24, 40, .25); }
  .ht-table thead th:first-child { background-color: var(--bs-tertiary-bg); }
}

function initTableHighlight() {
  var table = document.getElementById('htTable');
  if (!table) return;
  var rows = Array.prototype.slice.call(table.rows);
  // Default highlighted cell: Thu / Jane Medina
  var home = rows[2] && rows[2].cells[5];
  function clear() {
    table.querySelectorAll('.ht-hl, .ht-cell').forEach(function (el) { el.classList.remove('ht-hl', 'ht-cell'); });
  }
  function mark(cell) {
    clear();
    var col = cell.cellIndex;
    cell.parentElement.querySelectorAll('th, td').forEach(function (c) { c.classList.add('ht-hl'); });
    rows.forEach(function (r) { if (r.cells[col]) r.cells[col].classList.add('ht-hl'); });
    cell.classList.add('ht-cell');
  }
  function reset() { if (home) mark(home); else clear(); }
  table.querySelectorAll('tbody td').forEach(function (td) {
    td.addEventListener('mouseenter', function () { mark(td); });
    td.addEventListener('focus', function () { mark(td); });
  });
  table.addEventListener('mouseleave', reset);
  table.addEventListener('focusout', function (e) { if (!table.contains(e.relatedTarget)) reset(); });
  reset();
}
function initWeekNav() {
  var buttons = document.querySelectorAll('[data-ht-step]');
  var label = document.getElementById('htWeek');
  var range = document.getElementById('htRange');
  if (!buttons.length || !label) return;
  var week = 43;
  var start = new Date(2026, 9, 25);
  var fmt = function (d) { return d.toLocaleDateString('en-US', { month: 'short', day: 'numeric' }); };
  function render() {
    var s = new Date(start.getFullYear(), start.getMonth(), start.getDate() + (week - 43) * 7);
    var e = new Date(s.getFullYear(), s.getMonth(), s.getDate() + 6);
    label.textContent = 'Week ' + week;
    range.textContent = fmt(s) + ' – ' + fmt(e);
  }
  buttons.forEach(function (b) {
    b.addEventListener('click', function () { week += +b.dataset.htStep; render(); });
  });
  render();
}
initTableHighlight();
initWeekNav();