SaaS Dashboard with Lovable

Build a modern SaaS dashboard with the following features:

Features

1. Authentication flow - Sign in, sign up, and password reset using Supabase Auth
2. Responsive sidebar navigation - Collapsible menu for mobile and desktop
3. Dashboard home page with key metrics:
   • Total users card
   • Revenue card
   • Active sessions card
   • Line chart showing trends over time
4. Settings page - Profile management and billing
5. shadcn/ui components - Use throughout the application
6. Dark mode toggle - Light/dark theme switcher
7. Loading states and error handling - Comprehensive UX feedback

Design Requirements

• Professional and production-ready appearance
• Smooth animations and transitions
• Premium feel with attention to detail