Data Table

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #050910;
  --card: #0d1117;
  --card2: #0a0f1a;
  --border: rgba(255, 255, 255, 0.08);
  --text: #f2f6ff;
  --muted: #475569;
  --accent: #38bdf8;
  --row-hover: rgba(255, 255, 255, 0.025);
  --row-alt: rgba(255, 255, 255, 0.012);
  --sorted-col: rgba(56, 189, 248, 0.04);
  --danger: #f87171;
  --success: #4ade80;
  --warning: #fbbf24;
  --radius: 12px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  padding: 2rem 1rem;
}

.page {
  max-width: 1040px;
  margin: 0 auto;
}

/* ── Table shell ── */
.table-shell {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

/* ── Toolbar ── */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.125rem;
  border-bottom: 1px solid var(--border);
  gap: 1rem;
  flex-wrap: wrap;
}

.toolbar-left {
  flex: 1;
  min-width: 180px;
}

.search-wrap {
  position: relative;
  max-width: 300px;
}

.search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 1.1rem;
  pointer-events: none;
}

.search-input {
  width: 100%;
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 0.45rem 0.75rem 0.45rem 2.25rem;
  font-size: 0.855rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.12);
}

.search-input::placeholder {
  color: var(--muted);
}

/* Column toggle button */
.col-toggle-wrap {
  position: relative;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--card2);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 0.45rem 0.875rem;
  border-radius: 8px;
  font-size: 0.82rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

.icon-btn:hover {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.18);
}

.col-dropdown {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: #111827;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem;
  min-width: 160px;
  z-index: 100;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.col-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 0.6rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.835rem;
  color: var(--text);
  transition: background 0.15s;
}

.col-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.col-item input[type="checkbox"] {
  accent-color: var(--accent);
  width: 14px;
  height: 14px;
  cursor: pointer;
}

/* ── Bulk bar ── */
.bulk-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.625rem 1.125rem;
  background: rgba(56, 189, 248, 0.06);
  border-bottom: 1px solid rgba(56, 189, 248, 0.15);
  animation: slide-down 0.18s ease;
}

@keyframes slide-down {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.bulk-count {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

.bulk-actions {
  display: flex;
  gap: 0.5rem;
}

.bulk-btn {
  padding: 0.35rem 0.875rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  transition: background 0.2s, border-color 0.2s;
}

.bulk-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}
.bulk-btn--danger {
  color: var(--danger);
  border-color: rgba(248, 113, 113, 0.3);
}
.bulk-btn--danger:hover {
  background: rgba(248, 113, 113, 0.1);
}

/* ── Table wrap ── */
.table-wrap {
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.1) transparent;
}

.table-wrap::-webkit-scrollbar {
  height: 5px;
}
.table-wrap::-webkit-scrollbar-track {
  background: transparent;
}
.table-wrap::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
}

/* ── Data table ── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.855rem;
}

/* Sticky header */
.data-table thead {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--card2);
}

.data-table th {
  padding: 0.625rem 0.875rem;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  user-select: none;
}

.data-table th.sortable {
  cursor: pointer;
  transition: color 0.2s;
}

.data-table th.sortable:hover {
  color: var(--text);
}

.th-inner {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.sort-icon {
  font-size: 0.7rem;
  color: var(--muted);
  transition: opacity 0.2s;
}

.sort-icon--active {
  color: var(--accent);
}

/* Sorted column highlight */
.data-table td.col-sorted,
.data-table th.col-sorted {
  background: var(--sorted-col);
}

/* ── Rows ── */
.data-table tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}

.data-table tbody tr:nth-child(even) {
  background: var(--row-alt);
}
.data-table tbody tr:hover {
  background: var(--row-hover);
}
.data-table tbody tr.selected {
  background: rgba(56, 189, 248, 0.06);
}

.data-table td {
  padding: 0.75rem 0.875rem;
  color: var(--text);
  vertical-align: middle;
}

/* Checkbox column */
.col-check {
  width: 40px;
}

.data-table input[type="checkbox"] {
  accent-color: var(--accent);
  width: 15px;
  height: 15px;
  cursor: pointer;
}

/* ── Name cell ── */
.user-name {
  font-weight: 500;
}

/* ── Email cell ── */
.user-email {
  color: var(--muted);
  font-size: 0.82rem;
}

/* ── Role badge ── */
.role-badge {
  display: inline-block;
  padding: 0.2em 0.6em;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

/* ── Status badges ── */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2em 0.6em;
  border-radius: 999px;
  font-size: 0.73rem;
  font-weight: 600;
}

.status-badge::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
}

.status-badge--active {
  background: rgba(74, 222, 128, 0.1);
  color: var(--success);
}
.status-badge--active::before {
  background: var(--success);
}
.status-badge--inactive {
  background: rgba(71, 85, 105, 0.18);
  color: var(--muted);
}
.status-badge--inactive::before {
  background: var(--muted);
}
.status-badge--pending {
  background: rgba(251, 191, 36, 0.1);
  color: var(--warning);
}
.status-badge--pending::before {
  background: var(--warning);
}

/* ── Actions ── */
.actions-cell {
  display: flex;
  gap: 0.375rem;
  align-items: center;
}

.action-btn {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: none;
  border: 1px solid transparent;
  color: var(--muted);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 0.9rem;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.action-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border);
  color: var(--text);
}

.action-btn--delete:hover {
  background: rgba(248, 113, 113, 0.1);
  border-color: rgba(248, 113, 113, 0.3);
  color: var(--danger);
}

/* ── Empty state ── */
.empty-row td {
  text-align: center;
  padding: 3rem;
  color: var(--muted);
  font-size: 0.875rem;
}

/* ── Pagination ── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.125rem;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pagination-info {
  font-size: 0.8rem;
  color: var(--muted);
}

.page-btns {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}

.page-btn {
  min-width: 30px;
  height: 30px;
  border-radius: 6px;
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.82rem;
  cursor: pointer;
  display: grid;
  place-items: center;
  padding: 0 0.25rem;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.page-btn:hover:not([disabled]) {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.18);
}

.page-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #050910;
  font-weight: 700;
}

.page-btn[disabled] {
  opacity: 0.35;
  cursor: not-allowed;
}

.page-ellipsis {
  color: var(--muted);
  font-size: 0.8rem;
  padding: 0 0.25rem;
}

(function () {
  "use strict";

  // ── Data ────────────────────────────────────────────────────────────────────

  const DATA = [
    {
      id: 1,
      name: "Alex Morgan",
      email: "[email protected]",
      role: "Admin",
      status: "active",
      joined: "2023-01-15",
    },
    {
      id: 2,
      name: "Jordan Lee",
      email: "[email protected]",
      role: "Editor",
      status: "active",
      joined: "2023-03-08",
    },
    {
      id: 3,
      name: "Sam Rivera",
      email: "[email protected]",
      role: "Viewer",
      status: "inactive",
      joined: "2023-05-21",
    },
    {
      id: 4,
      name: "Casey Kim",
      email: "[email protected]",
      role: "Editor",
      status: "pending",
      joined: "2023-07-04",
    },
    {
      id: 5,
      name: "Morgan Blake",
      email: "[email protected]",
      role: "Viewer",
      status: "active",
      joined: "2023-08-19",
    },
    {
      id: 6,
      name: "Taylor Quinn",
      email: "[email protected]",
      role: "Admin",
      status: "active",
      joined: "2023-09-30",
    },
    {
      id: 7,
      name: "Drew Hayes",
      email: "[email protected]",
      role: "Viewer",
      status: "inactive",
      joined: "2023-11-01",
    },
    {
      id: 8,
      name: "Jamie Patel",
      email: "[email protected]",
      role: "Editor",
      status: "active",
      joined: "2024-01-22",
    },
    {
      id: 9,
      name: "Robin West",
      email: "[email protected]",
      role: "Viewer",
      status: "pending",
      joined: "2024-02-14",
    },
    {
      id: 10,
      name: "Avery Chen",
      email: "[email protected]",
      role: "Editor",
      status: "active",
      joined: "2024-03-05",
    },
    {
      id: 11,
      name: "Dakota Reed",
      email: "[email protected]",
      role: "Viewer",
      status: "inactive",
      joined: "2024-04-18",
    },
    {
      id: 12,
      name: "Charlie Stone",
      email: "[email protected]",
      role: "Admin",
      status: "active",
      joined: "2024-05-30",
    },
    {
      id: 13,
      name: "Skyler Ramos",
      email: "[email protected]",
      role: "Viewer",
      status: "pending",
      joined: "2024-07-11",
    },
    {
      id: 14,
      name: "Reese Torres",
      email: "[email protected]",
      role: "Editor",
      status: "active",
      joined: "2024-08-03",
    },
    {
      id: 15,
      name: "Finley Cross",
      email: "[email protected]",
      role: "Viewer",
      status: "inactive",
      joined: "2024-09-27",
    },
  ];

  // ── Columns definition ───────────────────────────────────────────────────────

  const COLUMNS = [
    { id: "check", label: "", sortable: false, visible: true },
    { id: "name", label: "Name", sortable: true, visible: true },
    { id: "email", label: "Email", sortable: true, visible: true },
    { id: "role", label: "Role", sortable: true, visible: true },
    { id: "status", label: "Status", sortable: true, visible: true },
    { id: "joined", label: "Joined", sortable: true, visible: true },
    { id: "actions", label: "Actions", sortable: false, visible: true },
  ];

  // ── State ────────────────────────────────────────────────────────────────────

  let filteredData = DATA.slice();
  let sortCol = null;
  let sortDir = null; // "asc" | "desc" | null
  let currentPage = 1;
  const PAGE_SIZE = 10;
  const selected = new Set();

  // ── DOM refs ─────────────────────────────────────────────────────────────────

  const theadRow = document.getElementById("thead-row");
  const tbody = document.getElementById("tbody");
  const pagination = document.getElementById("pagination");
  const bulkBar = document.getElementById("bulk-bar");
  const bulkCount = document.getElementById("bulk-count");
  const searchInput = document.getElementById("search-input");
  const colDropdown = document.getElementById("col-dropdown");
  const colBtn = document.getElementById("col-toggle-btn");
  const colWrap = document.getElementById("col-toggle-wrap");

  // ── Render ───────────────────────────────────────────────────────────────────

  function render() {
    renderHeader();
    renderRows();
    renderPagination();
    renderBulkBar();
    renderColDropdown();
  }

  // ── Header ────────────────────────────────────────────────────────────────────

  function renderHeader() {
    theadRow.innerHTML = "";

    COLUMNS.forEach(function (col) {
      if (!col.visible) return;

      const th = document.createElement("th");
      th.dataset.col = col.id;

      if (col.id === "check") {
        th.className = "col-check";
        const cb = document.createElement("input");
        cb.type = "checkbox";
        cb.id = "select-all";
        cb.setAttribute("aria-label", "Select all rows");
        const pageIds = pageData().map(function (r) {
          return r.id;
        });
        const selCount = pageIds.filter(function (id) {
          return selected.has(id);
        }).length;
        cb.checked = selCount === pageIds.length && pageIds.length > 0;
        cb.indeterminate = selCount > 0 && selCount < pageIds.length;
        cb.addEventListener("change", function () {
          pageData().forEach(function (row) {
            cb.checked ? selected.add(row.id) : selected.delete(row.id);
          });
          render();
        });
        th.appendChild(cb);
      } else {
        if (col.sortable) th.classList.add("sortable");
        if (sortCol === col.id) th.classList.add("col-sorted");

        const inner = document.createElement("span");
        inner.className = "th-inner";

        const lbl = document.createElement("span");
        lbl.textContent = col.label;
        inner.appendChild(lbl);

        if (col.sortable) {
          const icon = document.createElement("span");
          icon.className = "sort-icon" + (sortCol === col.id ? " sort-icon--active" : "");
          icon.setAttribute("aria-hidden", "true");
          icon.textContent = sortCol === col.id ? (sortDir === "asc" ? "↑" : "↓") : "↕";
          inner.appendChild(icon);

          th.addEventListener("click", function () {
            if (sortCol === col.id) {
              sortDir = sortDir === "asc" ? "desc" : sortDir === "desc" ? null : "asc";
              if (sortDir === null) sortCol = null;
            } else {
              sortCol = col.id;
              sortDir = "asc";
            }
            currentPage = 1;
            applySort();
            render();
          });
        }

        th.appendChild(inner);
      }

      theadRow.appendChild(th);
    });
  }

  // ── Rows ──────────────────────────────────────────────────────────────────────

  function renderRows() {
    tbody.innerHTML = "";
    const rows = pageData();

    if (!rows.length) {
      const tr = document.createElement("tr");
      tr.className = "empty-row";
      const td = document.createElement("td");
      td.setAttribute(
        "colspan",
        COLUMNS.filter(function (c) {
          return c.visible;
        }).length
      );
      td.textContent = "No users found.";
      tr.appendChild(td);
      tbody.appendChild(tr);
      return;
    }

    rows.forEach(function (row) {
      const tr = document.createElement("tr");
      if (selected.has(row.id)) tr.classList.add("selected");

      COLUMNS.forEach(function (col) {
        if (!col.visible) return;

        const td = document.createElement("td");
        td.dataset.col = col.id;
        if (sortCol === col.id) td.classList.add("col-sorted");

        switch (col.id) {
          case "check": {
            td.className = "col-check";
            const cb = document.createElement("input");
            cb.type = "checkbox";
            cb.checked = selected.has(row.id);
            cb.setAttribute("aria-label", "Select " + row.name);
            cb.addEventListener("change", function () {
              cb.checked ? selected.add(row.id) : selected.delete(row.id);
              render();
            });
            td.appendChild(cb);
            break;
          }
          case "name": {
            td.innerHTML = '<span class="user-name">' + esc(row.name) + "</span>";
            break;
          }
          case "email": {
            td.innerHTML = '<span class="user-email">' + esc(row.email) + "</span>";
            break;
          }
          case "role": {
            td.innerHTML = '<span class="role-badge">' + esc(row.role) + "</span>";
            break;
          }
          case "status": {
            const cls = "status-badge--" + row.status;
            td.innerHTML = '<span class="status-badge ' + cls + '">' + cap(row.status) + "</span>";
            break;
          }
          case "joined": {
            td.textContent = formatDate(row.joined);
            break;
          }
          case "actions": {
            td.innerHTML = [
              '<div class="actions-cell">',
              '  <button class="action-btn" aria-label="Edit ' +
                esc(row.name) +
                '" title="Edit">✎</button>',
              '  <button class="action-btn action-btn--delete" aria-label="Delete ' +
                esc(row.name) +
                '" title="Delete">🗑</button>',
              "</div>",
            ].join("");
            td.querySelector(".action-btn").addEventListener("click", function () {
              alert("Edit: " + row.name);
            });
            td.querySelector(".action-btn--delete").addEventListener("click", function () {
              if (confirm("Delete " + row.name + "?")) {
                filteredData = filteredData.filter(function (r) {
                  return r.id !== row.id;
                });
                selected.delete(row.id);
                render();
              }
            });
            break;
          }
        }

        tr.appendChild(td);
      });

      tbody.appendChild(tr);
    });
  }

  // ── Pagination ────────────────────────────────────────────────────────────────

  function renderPagination() {
    const total = filteredData.length;
    const totalPages = Math.max(1, Math.ceil(total / PAGE_SIZE));
    const start = (currentPage - 1) * PAGE_SIZE + 1;
    const end = Math.min(currentPage * PAGE_SIZE, total);

    pagination.innerHTML = "";

    const info = document.createElement("span");
    info.className = "pagination-info";
    info.textContent = total > 0 ? "Showing " + start + "–" + end + " of " + total : "No results";
    pagination.appendChild(info);

    const btns = document.createElement("div");
    btns.className = "page-btns";

    // Prev
    const prev = pageBtn("‹", function () {
      currentPage--;
      render();
    });
    prev.setAttribute("aria-label", "Previous page");
    prev.disabled = currentPage === 1;
    btns.appendChild(prev);

    // Page numbers with ellipsis
    const pages = getPageNumbers(currentPage, totalPages);
    pages.forEach(function (p) {
      if (p === "…") {
        const span = document.createElement("span");
        span.className = "page-ellipsis";
        span.textContent = "…";
        btns.appendChild(span);
      } else {
        const btn = pageBtn(p, function () {
          currentPage = p;
          render();
        });
        if (p === currentPage) btn.classList.add("active");
        btn.setAttribute("aria-label", "Page " + p);
        btn.setAttribute("aria-current", p === currentPage ? "page" : undefined);
        btns.appendChild(btn);
      }
    });

    // Next
    const next = pageBtn("›", function () {
      currentPage++;
      render();
    });
    next.setAttribute("aria-label", "Next page");
    next.disabled = currentPage === totalPages;
    btns.appendChild(next);

    pagination.appendChild(btns);
  }

  function pageBtn(label, onClick) {
    const btn = document.createElement("button");
    btn.className = "page-btn";
    btn.textContent = label;
    btn.addEventListener("click", onClick);
    return btn;
  }

  function getPageNumbers(cur, total) {
    if (total <= 7)
      return Array.from({ length: total }, function (_, i) {
        return i + 1;
      });
    if (cur <= 4) return [1, 2, 3, 4, 5, "…", total];
    if (cur >= total - 3) return [1, "…", total - 4, total - 3, total - 2, total - 1, total];
    return [1, "…", cur - 1, cur, cur + 1, "…", total];
  }

  // ── Bulk bar ──────────────────────────────────────────────────────────────────

  function renderBulkBar() {
    if (selected.size > 0) {
      bulkBar.removeAttribute("hidden");
      bulkCount.textContent = selected.size + " selected";
    } else {
      bulkBar.setAttribute("hidden", "");
    }
  }

  // ── Column visibility dropdown ────────────────────────────────────────────────

  function renderColDropdown() {
    colDropdown.innerHTML = "";
    COLUMNS.forEach(function (col) {
      if (col.id === "check" || col.id === "actions") return; // always visible
      const item = document.createElement("label");
      item.className = "col-item";
      const cb = document.createElement("input");
      cb.type = "checkbox";
      cb.checked = col.visible;
      cb.addEventListener("change", function () {
        col.visible = cb.checked;
        render();
      });
      const lbl = document.createElement("span");
      lbl.textContent = col.label;
      item.appendChild(cb);
      item.appendChild(lbl);
      colDropdown.appendChild(item);
    });
  }

  // ── Helpers ───────────────────────────────────────────────────────────────────

  function pageData() {
    const start = (currentPage - 1) * PAGE_SIZE;
    return filteredData.slice(start, start + PAGE_SIZE);
  }

  function applyFilter(query) {
    const q = query.toLowerCase().trim();
    filteredData = DATA.filter(function (row) {
      return !q || row.name.toLowerCase().includes(q) || row.email.toLowerCase().includes(q);
    });
    applySort();
  }

  function applySort() {
    if (!sortCol || !sortDir) return;
    filteredData = filteredData.slice().sort(function (a, b) {
      const av = a[sortCol] || "";
      const bv = b[sortCol] || "";
      const cmp = av.localeCompare(bv, undefined, { numeric: true });
      return sortDir === "asc" ? cmp : -cmp;
    });
  }

  function esc(str) {
    return String(str)
      .replace(/&/g, "&amp;")
      .replace(/</g, "&lt;")
      .replace(/>/g, "&gt;")
      .replace(/"/g, "&quot;");
  }

  function cap(str) {
    return str.charAt(0).toUpperCase() + str.slice(1);
  }

  function formatDate(str) {
    const d = new Date(str + "T00:00:00");
    return d.toLocaleDateString("en-US", { month: "short", day: "numeric", year: "numeric" });
  }

  // ── Events ────────────────────────────────────────────────────────────────────

  // Search
  searchInput.addEventListener("input", function () {
    currentPage = 1;
    selected.clear();
    applyFilter(searchInput.value);
    render();
  });

  // Bulk delete
  document.getElementById("bulk-delete").addEventListener("click", function () {
    if (!selected.size) return;
    if (!confirm("Delete " + selected.size + " selected user(s)?")) return;
    filteredData = filteredData.filter(function (r) {
      return !selected.has(r.id);
    });
    selected.clear();
    currentPage = 1;
    render();
  });

  // Bulk export (demo)
  document.getElementById("bulk-export").addEventListener("click", function () {
    const rows = filteredData.filter(function (r) {
      return selected.has(r.id);
    });
    const csv = ["Name,Email,Role,Status,Joined"]
      .concat(
        rows.map(function (r) {
          return [r.name, r.email, r.role, r.status, r.joined].join(",");
        })
      )
      .join("\n");
    const blob = new Blob([csv], { type: "text/csv" });
    const url = URL.createObjectURL(blob);
    const a = document.createElement("a");
    a.href = url;
    a.download = "users.csv";
    a.click();
    URL.revokeObjectURL(url);
  });

  // Column visibility toggle
  colBtn.addEventListener("click", function () {
    const isHidden = colDropdown.hasAttribute("hidden");
    if (isHidden) {
      colDropdown.removeAttribute("hidden");
      colBtn.setAttribute("aria-expanded", "true");
    } else {
      colDropdown.setAttribute("hidden", "");
      colBtn.setAttribute("aria-expanded", "false");
    }
  });

  document.addEventListener("click", function (e) {
    if (!colWrap.contains(e.target)) {
      colDropdown.setAttribute("hidden", "");
      colBtn.setAttribute("aria-expanded", "false");
    }
  });

  // ── Init ──────────────────────────────────────────────────────────────────────

  render();
})();

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>Data Table</title>
  <link rel="stylesheet" href="style.css" />
</head>
<body>

  <div class="page">

    <div class="table-shell" id="table-shell">

      <!-- ── Toolbar ── -->
      <div class="toolbar">
        <div class="toolbar-left">
          <div class="search-wrap">
            <span class="search-icon" aria-hidden="true">⌕</span>
            <input
              type="search"
              id="search-input"
              class="search-input"
              placeholder="Search users…"
              aria-label="Search users"
            />
          </div>
        </div>
        <div class="toolbar-right">
          <!-- Column visibility toggle -->
          <div class="col-toggle-wrap" id="col-toggle-wrap">
            <button class="icon-btn" id="col-toggle-btn" aria-label="Toggle column visibility" aria-haspopup="true" aria-expanded="false">
              <span>Columns</span>
              <svg width="14" height="14" viewBox="0 0 14 14" fill="none"><path d="M2 3.5h10M2 7h10M2 10.5h10" stroke="currentColor" stroke-width="1.4" stroke-linecap="round"/></svg>
            </button>
            <div class="col-dropdown" id="col-dropdown" hidden role="menu" aria-label="Column visibility">
              <!-- populated by JS -->
            </div>
          </div>
        </div>
      </div>

      <!-- ── Bulk action bar ── -->
      <div class="bulk-bar" id="bulk-bar" hidden aria-live="polite">
        <span class="bulk-count" id="bulk-count">0 selected</span>
        <div class="bulk-actions">
          <button class="bulk-btn bulk-btn--danger" id="bulk-delete">Delete</button>
          <button class="bulk-btn" id="bulk-export">Export CSV</button>
        </div>
      </div>

      <!-- ── Table ── -->
      <div class="table-wrap" role="region" aria-label="Users table" tabindex="0">
        <table class="data-table" id="data-table" aria-rowcount="15">
          <thead>
            <tr id="thead-row">
              <!-- populated by JS -->
            </tr>
          </thead>
          <tbody id="tbody">
            <!-- populated by JS -->
          </tbody>
        </table>
      </div>

      <!-- ── Pagination ── -->
      <div class="pagination" id="pagination" aria-label="Table pagination">
        <!-- populated by JS -->
      </div>

    </div>
  </div>

  <script src="script.js"></script>
</body>
</html>