() => {
  // Verify we are on a search results page
  if (!window.location.pathname.includes('/search')) {
    return { error: 'Not on a ScienceDirect search results page.' };
  }

  const items = document.querySelectorAll('li.ResultItem');
  if (items.length === 0) {
    return { error: 'No results found on the current page. The page may still be loading.' };
  }

  const papers = [];
  for (let i = 0; i < items.length; i++) {
    const item = items[i];
    const titleLink = item.querySelector('a.result-list-title-link');
    const journal = item.querySelector('a.subtype-srctitle-link');
    const dateSpans = item.querySelectorAll('.srctitle-date-fields > span');
    const date = dateSpans.length > 1 ? dateSpans[dateSpans.length - 1].textContent.trim() : '';
    const authors = [...item.querySelectorAll('.Authors .author')].map(a => a.textContent.trim());
    const doi = item.getAttribute('data-doi');
    const pii = titleLink?.href?.match(/pii\/(\w+)/)?.[1] || '';
    const articleType = item.querySelector('.article-type')?.textContent?.trim() || '';
    const isOpenAccess = !!item.querySelector('.access-label');
    const checkboxId = item.querySelector('.checkbox-input')?.id || '';

    papers.push({
      rank: i + 1,
      title: titleLink?.textContent?.trim() || '',
      pii, doi: doi || '',
      journal: journal?.textContent?.trim() || '',
      date, authors, articleType, openAccess: isOpenAccess,
      checkboxId,
    });
  }

  const totalText = document.querySelector('.search-body-results-text')?.textContent?.trim() || '';
  const pageInfo = document.querySelector('.Pagination li:first-child')?.textContent?.trim() || '';
  const currentUrl = window.location.href;

  return { papers, totalResults: totalText, pageInfo, currentUrl };
}