/**
 * Skip to content functionality with modern ES syntax
 */
document.addEventListener('DOMContentLoaded', () => {
  // Wait for jQuery to be defined
  const checkJQuery = () => {
    if (window.jQuery) {
      initSkipToContent(jQuery);
    } else {
      setTimeout(checkJQuery, 50);
    }
  };
  
  checkJQuery();
});

function initSkipToContent($) {
  $('.skip-to-content').click(e => {
    skipTo();
    e.preventDefault();
  });
  
  $('.skip-to-content').keyup(e => {
    if (e.which === 13) {
      skipTo();
      e.preventDefault();
    }
  });
  
  function skipTo() {
    $('main').attr('tabindex', 0).focus();
    $('html,body').animate({
      scrollTop: $('main').offset().top
    });
  }
}