Travel Planner Web App Development

I need a complete, production-ready Travel Planner web application built with a vanilla HTML, CSS and JavaScript front end, a Node.js (preferably Express) back end, and a MongoDB database. The platform has to be fully responsive and intuitive on both desktop and mobile, letting end-users register, log in, search destinations, create and edit multi-day itineraries, and visualise each stop on an interactive map. An admin panel should give me control over user management, destination content, and overall site settings.

Core features to ship:
• Secure user authentication and profile management
• Destination search with filters (city, country, keyword)
• Drag-and-drop or calendar-style itinerary builder storing data in MongoDB
• Map integration (Google Maps, Mapbox or similar) that plots daily routes
• Clean RESTful API between the Node.js server and the front end
• Admin dashboard with CRUD on users, destinations and trips
• Responsive UI, cross-browser tested
• Well-commented codebase, README and setup scripts

Please reference at least one comparable full-stack project in your portfolio so I can gauge build quality. Include your estimated timeline in days as well as any milestones you propose for staging and final delivery. Clean architecture, clear documentation and maintainable code are essential, as I’ll be actively extending the product after launch.