Improve Styling for Product Details Page

[Ananyaa03]

Description:
The current Product Details page has a clean layout but could be made more visually appealing and modern. We should update the styling to enhance user experience and make it more consistent with the rest of the site.

Suggested Changes:

• Update typography to be more modern and consistent (e.g., use Google Fonts like Poppins or Roboto).
• Improve button styles (hover effects, padding, rounded edges, shadows).
• Add subtle animations when selecting a size or adding to the cart.
• Make product recommendations more visually appealing with uniform image sizes and hover effects.
• Ensure the page is fully responsive for mobile and tablet views.
• Update color scheme to match brand theme.
• Add a sticky "Add to Cart" button for mobile devices.