/* DBC / BIOTEN Homepage V7.8.2 — accessible mobile newsroom disclosure. */
(function () {
  'use strict';

  var toggle = document.querySelector('.v782-news-toggle');
  var grid = document.getElementById('v782-news-grid');

  if (!toggle || !grid) return;

  function prefersReducedMotion() {
    return window.matchMedia && window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  }

  toggle.addEventListener('click', function () {
    var willExpand = toggle.getAttribute('aria-expanded') !== 'true';
    toggle.setAttribute('aria-expanded', String(willExpand));
    grid.classList.toggle('is-expanded', willExpand);

    if (!willExpand && window.matchMedia('(max-width: 760px)').matches) {
      window.requestAnimationFrame(function () {
        toggle.scrollIntoView({
          block: 'center',
          behavior: prefersReducedMotion() ? 'auto' : 'smooth'
        });
      });
    }
  });
}());