I can see the issue. In Next.js 16, params is now a Promise and needs to be awaited. Since this is a client component, I need to convert it to a server component or use async/await properly. The best approach is to make this an async server component and handle the client-side interactivity separately. Let me fix this:

Fixed the error by converting the product page to an async server component that properly awaits the params Promise (as required in Next.js 16). I separated the interactive parts (size/color selection, add to cart button) into a client component called ProductDetails, keeping the server component for the static content and data fetching. This approach follows Next.js best practices of keeping server components by default and only marking client components where needed for interactivity.

Now I'll make all the requested changes: