Implement a fully functional and visually aligned custom cart drawer on the Shopify storefront to enhance the user experience and streamline the checkout process. The drawer will dynamically display cart contents without requiring page reloads.

Custom-designed sliding cart drawer that opens from the side of the screen. Real-time cart updates using AJAX (add, remove, and update quantity). Integration with Shopify’s cart object to reflect accurate pricing, product details, and variants.

Support for discounts, shipping messages, or free shipping progress bar (if applicable). Mobile-optimized and responsive design. Styling to match the brand’s theme and user interface. Optional: Integration with custom apps (e.g., upsell, subscription, etc.) if required.