Features:
- Add useCalculatorState hook with localStorage persistence and 1-hour expiry
- State persists through page reloads and Stripe checkout redirects
- Automatically clears state on successful payment (paid/fulfilled status)
Navigation fixes:
- Fix white page issues on checkout success/cancel pages
- Replace <a> links with button handlers for proper state-based routing
- Pass navigation handlers from App.tsx to checkout pages
State persistence integration:
- TripCalculator: Save/restore calculator inputs (fuel, distance, custom)
- MobileCalculator: Full state persistence for mobile app route
- OffsetOrder: Persist offset percentage and portfolio selection
- MobileOffsetOrder: Persist offset percentage for mobile flow
Carbon impact comparisons:
- Add varied carbon impact comparisons with random selection
- Display 3 comparisons in preview mode, 5 in success mode
- Categories: cars, flights, trees, streaming, homes
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
## Stripe Payment Integration
- Add Express.js backend server with Stripe Checkout Sessions
- Create SQLite database for order tracking
- Implement Stripe webhook handlers for payment events
- Integrate with Wren Climate API for carbon offset fulfillment
- Add CheckoutSuccess and CheckoutCancel pages
- Create checkout API client for frontend
- Update OffsetOrder component to redirect to Stripe Checkout
- Add processing fee calculation (3% of base amount)
- Implement order status tracking (pending → paid → fulfilled)
Backend (server/):
- Express server with CORS and middleware
- SQLite database with Order schema
- Stripe configuration and client
- Order CRUD operations model
- Checkout session creation endpoint
- Webhook handler for payment confirmation
- Wren API client for offset fulfillment
Frontend:
- CheckoutSuccess page with order details display
- CheckoutCancel page with retry encouragement
- Updated OffsetOrder to use Stripe checkout flow
- Added checkout routes to App.tsx
- TypeScript interfaces for checkout flow
## Visual & UX Enhancements
- Add CertificationBadge component for project verification status
- Create PortfolioDonutChart for visual portfolio allocation
- Implement RadialProgress for percentage displays
- Add reusable form components (FormInput, FormTextarea, FormSelect, FormFieldWrapper)
- Refactor OffsetOrder with improved layout and animations
- Add offset percentage slider with visual feedback
- Enhance MobileOffsetOrder with better responsive design
- Improve TripCalculator with cleaner UI structure
- Update CurrencySelect with better styling
- Add portfolio distribution visualization
- Enhance project cards with hover effects and animations
- Improve color palette and gradient usage throughout
## Configuration
- Add VITE_API_BASE_URL environment variable
- Create backend .env.example template
- Update frontend .env.example with API URL
- Add Stripe documentation references
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
