How are you with mobile? Were there adaptations? Did you build PWA or SPA?

Yes, I have experience working with mobile versions. For interface adaptation, I usually use:

• CSS media queries to change styles for different screen sizes.
• Flexbox and Grid for flexible layout.
• Image and resource optimization for fast loading on mobile devices.

Regarding application architecture:

• SPA (Single Page Application) — most often used for web applications with a dynamic interface, where speed and responsiveness are important.
• PWA (Progressive Web App) — I have built and deployed to provide offline access, push notifications, and the ability to install the app on a device, which improves the user experience on mobile.

Example: In one project, I implemented a PWA using Service Worker for data caching and offline mode, which significantly increased user retention on mobile.