Modern Animated Responsive Website with Dark/Light Theme and Contact Form

I’m looking for an experienced web developer/designer to build a modern, fully responsive website with smooth animations and both dark and light theme options. The site should have a clean, user-friendly UI/UX and work seamlessly on all devices (desktop, tablet, mobile).

Key requirements:

Modern and elegant design with subtle animations/transitions

Responsive layout (mobile-first design preferred)

Dark and light theme toggle functionality

Contact form that users can fill and submit — the form details should be sent directly to my email

Fast loading speed and SEO-friendly structure

Clean, well-documented code

Bonus: Experience with React, Next.js, or similar modern frameworks will be a plus.