Full-Stack Responsive Website With Premium Design

I need a highly professional, modern, and fully responsive full-stack website with premium UI/UX design. The website should work smoothly on desktop, tablet, and mobile devices. It should include an attractive landing page, about section, services section, portfolio/projects showcase, testimonials, contact form, and admin dashboard.
Required Features:
Modern and unique design
Responsive layout for all devices
Fast loading performance
SEO-friendly structure
Secure authentication system (Login/Register)
Admin panel for content management
Contact form with email notifications
Project management system
Smooth animations and transitions
Dark/Light mode support
Social media integration
Google Maps integration
Database connectivity
Secure backend API
Clean and maintainable code
Deployment and hosting support
Preferred Technology Stack:
Frontend: React.js, Next.js, Tailwind CSS
Backend: Node.js, Express.js
Database: MongoDB
Hosting: Netlify/Vercel
Additional Requirements: The website should have a premium look similar to top modern websites. Code should be well-structured, optimized, scalable, and easy to maintain. Complete source code and deployment support are required.
Budget: Open for discussion
Timeline: 7–15 days