Update WordPress E-Commerce Theme

My current WordPress store runs fine functionally, but its look is dated. I want to switch to a modern, clean theme that showcases the product catalog beautifully, keeps the shopping cart flow intuitive, and works flawlessly with my existing payment gateway.

Here is the scope:

• Recommend a modern, lightweight theme that is WooCommerce-ready and mobile-responsive.
• Create a staging copy, install the theme there first, and migrate my existing products, categories, cart, and gateway settings without data loss.
• Tweak colors, typography, and layout so the site keeps its brand personality while feeling fresh and uncluttered.
• Check all core pages—home, shop, product detail, cart, checkout, and account—for styling consistency and smooth UX.
• Optimize speed and ensure no SEO regressions.

Acceptance criteria: the live site must load correctly on desktop and mobile, all products must remain purchasable end-to-end, and no console or PHP errors should appear after launch.

I can provide access to the current WordPress dashboard, hosting panel, and any premium theme files we select.