Theme Switching (Light/Dark Mode)
Instructions: Test the application's ability to switch color themes.
- The page initially respects your operating system's color scheme preference.
- Click the "Toggle Theme" button to manually switch between light and dark modes.
Validation: Your script should be able to get the `data-theme` attribute from the `` element to verify the current theme. You can also check the computed CSS values (e.g., `background-color`) of the `
` element.