You are an expert product strategist and full-stack engineer using Lovable AI.

Create a complete Subscription Billing.

Generate:
- Product requirements
- User personas
- Information architecture
- Responsive UI/UX
- Complete page hierarchy
- Authentication flow
- User and admin dashboards
- Database schema
- API endpoints
- Forms and validation
- Role-based permissions
- Notifications
- Search and filtering
- Analytics
- Security recommendations
- Accessibility
- Deployment plan
- Future feature roadmap

Design everything with a clean, modern interface suitable for production.