import { test, expect } from '@playwright/test';

test.describe('Structural - homepage', () => {
  test('homepage: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/');
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
  });
  test('homepage: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('homepage: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng', () => {
  test('eng: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - fra', () => {
  test('fra: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/fra/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('fra: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/fra/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('fra: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/fra/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_about', () => {
  test('eng_about: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/about/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_about: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/about/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_about: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/about/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_accessibility', () => {
  test('eng_accessibility: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/accessibility/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_accessibility: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/accessibility/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_accessibility: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/accessibility/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_astronauts', () => {
  test('eng_astronauts: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/astronauts/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_astronauts: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/astronauts/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_astronauts: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/astronauts/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_astronomy', () => {
  test('eng_astronomy: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/astronomy/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_astronomy: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/astronomy/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_astronomy: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/astronomy/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_events', () => {
  test('eng_events: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/events/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_events: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/events/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_events: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/events/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_funding_programs', () => {
  test('eng_funding_programs: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/funding-programs/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_funding_programs: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/funding-programs/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_funding_programs: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/funding-programs/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_iss', () => {
  test('eng_iss: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/iss/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_iss: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/iss/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_iss: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/iss/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_jobs', () => {
  test('eng_jobs: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/jobs/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_jobs: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/jobs/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_jobs: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/jobs/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_laboratories_and_warehouse', () => {
  test('eng_laboratories_and_warehouse: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/laboratories-and-warehouse/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_laboratories_and_warehouse: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/laboratories-and-warehouse/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_laboratories_and_warehouse: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/laboratories-and-warehouse/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_media', () => {
  test('eng_media: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/media/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_media: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/media/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_media: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/media/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_missions', () => {
  test('eng_missions: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/missions/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_missions: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/missions/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
});

test.describe('Structural - eng_multimedia', () => {
  test('eng_multimedia: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/multimedia/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_multimedia: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/multimedia/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_multimedia: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/multimedia/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_publications', () => {
  test('eng_publications: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/publications/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_publications: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/publications/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_publications: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/publications/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_transparency', () => {
  test('eng_transparency: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/transparency/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_transparency: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/transparency/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_transparency: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/transparency/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_youth_educators', () => {
  test('eng_youth_educators: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/youth-educators/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_youth_educators: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/youth-educators/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_youth_educators: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/youth-educators/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - fra_iss', () => {
  test('fra_iss: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/fra/iss/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('fra_iss: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/fra/iss/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('fra_iss: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/fra/iss/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_about_everyday_benefits_of_space_exploration', () => {
  test('eng_about_everyday_benefits_of_space_exploration: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/about/everyday-benefits-of-space-exploration/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_about_everyday_benefits_of_space_exploration: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/about/everyday-benefits-of-space-exploration/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_about_everyday_benefits_of_space_exploration: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/about/everyday-benefits-of-space-exploration/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_astronauts_about_the_job', () => {
  test('eng_astronauts_about_the_job: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/astronauts/about-the-job/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_astronauts_about_the_job: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/astronauts/about-the-job/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_astronauts_about_the_job: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/astronauts/about-the-job/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_astronauts_canadian', () => {
  test('eng_astronauts_canadian: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/astronauts/canadian/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_astronauts_canadian: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/astronauts/canadian/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_astronauts_canadian: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/astronauts/canadian/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_astronauts_living_in_space', () => {
  test('eng_astronauts_living_in_space: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/astronauts/living-in-space/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_astronauts_living_in_space: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/astronauts/living-in-space/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_astronauts_living_in_space: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/astronauts/living-in-space/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_astronauts_space_medicine', () => {
  test('eng_astronauts_space_medicine: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/astronauts/space-medicine/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_astronauts_space_medicine: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/astronauts/space-medicine/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_astronauts_space_medicine: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/astronauts/space-medicine/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_astronomy_beyond_our_solar_system', () => {
  test('eng_astronomy_beyond_our_solar_system: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/astronomy/beyond-our-solar-system/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_astronomy_beyond_our_solar_system: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/astronomy/beyond-our-solar-system/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_astronomy_beyond_our_solar_system: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/astronomy/beyond-our-solar-system/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_astronomy_solar_system', () => {
  test('eng_astronomy_solar_system: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/astronomy/solar-system/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_astronomy_solar_system: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/astronomy/solar-system/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_astronomy_solar_system: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/astronomy/solar-system/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - eng_astronomy_tips_tricks', () => {
  test('eng_astronomy_tips_tricks: reproduces GT semantic landmarks', async ({ page }) => {
    await page.goto('/eng/astronomy/tips-tricks/');
    expect(await page.locator('header, [role="banner"]').first().count(), 'header landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('main, [role="main"]').first().count(), 'main landmark present in GT').toBeGreaterThan(0);
    expect(await page.locator('footer, [role="contentinfo"]').first().count(), 'footer landmark present in GT').toBeGreaterThan(0);
  });
  test('eng_astronomy_tips_tricks: heading hierarchy is valid', async ({ page }) => {
    await page.goto('/eng/astronomy/tips-tricks/');
    const headingLevels = await page.evaluate(() => {
      const headings = document.querySelectorAll('h1, h2, h3, h4, h5, h6');
      return Array.from(headings).map(h => parseInt(h.tagName.substring(1)));
    });
    if (headingLevels.length > 1) {
      for (let i = 1; i < headingLevels.length; i++) {
        const jump = headingLevels[i] - headingLevels[i-1];
        expect(jump).toBeLessThanOrEqual(2);
      }
    }
  });
  test('eng_astronomy_tips_tricks: no horizontal overflow at 375px', async ({ page }) => {
    await page.setViewportSize({ width: 375, height: 812 });
    await page.goto('/eng/astronomy/tips-tricks/');
    await page.waitForTimeout(500);
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    expect(scrollWidth).toBeLessThanOrEqual(385);
  });
});

test.describe('Structural - Consistency', () => {
  test('header links are consistent across pages', async ({ page }) => {
    const headerLinksByPage: string[][] = [];
    {
      await page.goto('/');
      const links = await page.locator('header a, nav a').allTextContents();
      headerLinksByPage.push(links.map(l => l.trim()).filter(l => l.length > 0));
    }
    {
      await page.goto('/eng/');
      const links = await page.locator('header a, nav a').allTextContents();
      headerLinksByPage.push(links.map(l => l.trim()).filter(l => l.length > 0));
    }
    {
      await page.goto('/fra/');
      const links = await page.locator('header a, nav a').allTextContents();
      headerLinksByPage.push(links.map(l => l.trim()).filter(l => l.length > 0));
    }
    {
      await page.goto('/eng/about/');
      const links = await page.locator('header a, nav a').allTextContents();
      headerLinksByPage.push(links.map(l => l.trim()).filter(l => l.length > 0));
    }
    if (headerLinksByPage.length >= 2 && headerLinksByPage[0].length > 0) {
      const first = new Set(headerLinksByPage[0]);
      for (let i = 1; i < headerLinksByPage.length; i++) {
        const current = new Set(headerLinksByPage[i]);
        const overlap = [...first].filter(l => current.has(l));
        if (first.size > 0) {
          expect(overlap.length / first.size).toBeGreaterThanOrEqual(0.5);
        }
      }
    }
  });
});