BREAKING CHANGE: All environment variables are now runtime-configurable
Changes:
- Removed ALL build-time NEXT_PUBLIC_* variables from Dockerfile and CI/CD
- Created server-side proxy routes for Wren API (/api/wren/*)
- Refactored wrenClient.ts to use proxy endpoints (reduced from 400+ to 200 lines)
- Updated checkoutClient.ts and emailClient.ts to remove NEXT_PUBLIC_ fallbacks
- Hardcoded metadataBase in layout.tsx (no longer depends on env var)
- Updated .env.local to use runtime-only variables (WREN_API_TOKEN, NocoDB config)
Security improvements:
- Wren API token never exposed to browser
- All secrets stay server-side
- No sensitive data baked into build
Configuration:
- Wren API: Set WREN_API_TOKEN in docker-compose or .env
- NocoDB: Set NOCODB_* variables in docker-compose or .env
- No Gitea secrets/variables needed for build (only registry credentials)
Docker build is now truly environment-agnostic - same image works in
any environment with different runtime configuration.
- Created api/ directory at project root
- Copied nocodbClient.ts from src/api/ to api/
- Resolves build error: Module not found @/api/nocodbClient
- Aligns with Next.js app router structure (@/ alias points to root)
Security & Cleanup Changes:
1. Removed NEXT_PUBLIC_WREN_API_TOKEN from frontend (security risk)
2. Removed Formspree references (no longer needed)
3. Wren API token now lives in backend only (runtime configurable)
4. Added NocoDB env vars to frontend for admin portal server-side API
Changes:
- Dockerfile: Removed Formspree and NEXT_PUBLIC_WREN_API_TOKEN build args
- CI/CD: Updated build-args to only include necessary variables
- Frontend should call backend /api/wren/* endpoints
- Backend handles Wren API with WREN_API_TOKEN (can change anytime!)
Benefits:
✅ API token no longer exposed in browser
✅ Can change Wren token without rebuilding images
✅ Cleaner build process
✅ Removed unused Formspree dependencies
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Problem:
- NEXT_PUBLIC_* variables must be baked into Next.js build at BUILD TIME
- Setting them in docker-compose is too late (bundle already built)
- This caused "NEXT_PUBLIC_WREN_API_TOKEN is undefined" errors in production
Solution:
1. Updated Dockerfile to accept ARG values for all NEXT_PUBLIC_* variables
2. Set ARGs as ENV variables before npm run build (lines 15-26)
3. Updated CI/CD workflow to pass build-args from Gitea secrets/vars
4. Variables are now baked into the image during build
Next Steps:
1. Add these secrets to Gitea repository settings:
- NEXT_PUBLIC_WREN_API_TOKEN
- NEXT_PUBLIC_FORMSPREE_CONTACT_ID
- NEXT_PUBLIC_FORMSPREE_OFFSET_ID
- NEXT_PUBLIC_STRIPE_PUBLISHABLE_KEY
2. Add this variable to Gitea repository settings:
- NEXT_PUBLIC_API_BASE_URL
3. Next push will build image with variables baked in
4. Can simplify docker-compose (remove NEXT_PUBLIC_* from web service)
Files Changed:
- Dockerfile: Added ARG and ENV declarations before build step
- .gitea/workflows/build-deploy.yml: Added build-args to frontend image build
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Phase 2 Backend Integration Complete:
Backend Infrastructure:
- Created NocoDB client abstraction layer (src/api/nocodbClient.ts)
- Clean TypeScript API hiding NocoDB query syntax complexity
- Helper methods for orders, stats, search, timeline, and filtering
- Automatic date range handling and pagination support
API Routes:
- POST /api/admin/stats - Dashboard statistics with time range filtering
- GET /api/admin/orders - List orders with search, filter, sort, pagination
- GET /api/admin/orders/[id] - Single order details
- PATCH /api/admin/orders/[id] - Update order fields
- DELETE /api/admin/orders/[id] - Cancel order (soft delete)
- GET /api/admin/orders/export - CSV/Excel export with filters
Dashboard Updates:
- Real-time data fetching from NocoDB
- Time range selector (7d, 30d, 90d, all time)
- Recharts line chart for orders timeline
- Recharts pie chart for status distribution
- Loading states and error handling
- Dynamic stat cards with real numbers
Dependencies Added:
- papaparse - CSV export
- xlsx - Excel export with styling
- @types/papaparse - TypeScript support
Data Types:
- OrderRecord interface for NocoDB data structure
- DashboardStats, TimelineData, OrderFilters interfaces
- Full type safety across API and UI
Environment Configuration:
- NOCODB_BASE_URL, NOCODB_BASE_ID configured
- NOCODB_API_KEY, NOCODB_ORDERS_TABLE_ID configured
- All credentials stored securely in .env.local
Ready for testing with sample data in NocoDB!
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Co-Authored-By: Claude <noreply@anthropic.com>
🎨 Color harmony improvements for better visual balance:
## Changes Made
- **Icons**: User/Lock icons changed from bright maritime-teal to subdued deep-sea-blue/60
- **Input Focus**: Focus rings changed from bright teal to elegant deep-sea-blue/50
- **Sign In Button**: Simplified from teal-green gradient to solid deep-sea-blue
- **Error Messages**: More subdued red-900/30 background for better harmony
## Result
- More cohesive professional appearance
- Better contrast balance against Monaco harbor background
- Elegant, understated design that doesn't compete with background
- WCAG AA compliant contrast ratios maintained
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Changed layout padding from Tailwind pt-48 to inline style paddingTop: 110px for reliable CSS specificity
- Added negative margin to homepage hero section to maintain vertical centering
- Updated client components (About, Contact, HowItWorks) from py-12 to pb-12 for proper spacing
- All pages now have proper header clearance without content cutoff
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Removed unused imports and state variables that were causing TypeScript build errors:
- Removed YachtSearch import (not used)
- Removed calculateTripCarbon import (not used)
- Removed getVesselData import (only used in unused handleSearch)
- Removed CarbonCalculation type import (not used)
- Removed unused state variables: loading, error, vesselData
- Removed unused handleSearch function
This fixes the Docker build failure: 'YachtSearch' is declared but its value is never read.
Remove unused 'React' imports from App.tsx and all component files in project/src/components/. These imports are not needed with the modern JSX transform and were causing TypeScript build errors in strict mode.
Files updated:
- project/src/App.tsx
- project/src/components/About.tsx
- project/src/components/CarbonOffset.tsx
- project/src/components/Contact.tsx
- project/src/components/CurrencySelect.tsx
- project/src/components/ErrorBoundary.tsx
- project/src/components/Home.tsx
- project/src/components/HowItWorks.tsx
- project/src/components/OffsetOrder.tsx
- project/src/components/PuffinAdvantage.tsx
- project/src/components/TripCalculator.tsx
- project/src/components/YachtSearch.tsx
This fixes the Docker build failure caused by TypeScript strict mode detecting unused variables.
This is a major migration from Vite to Next.js 16.0.1 for improved
performance, better SEO, and modern React features.
## Next.js Migration Changes
- Upgraded to Next.js 16.0.1 with Turbopack (from Vite 6)
- Migrated from client-side routing to App Router architecture
- Created app/ directory with Next.js page structure
- Added server components and client components pattern
- Configured standalone Docker builds for production
## Bug Fixes - React Hooks
- Fixed infinite loop in Header.tsx scroll behavior (removed lastScrollY state dependency)
- Fixed infinite loop in useCalculatorState.ts (wrapped saveState/clearState in useCallback)
- Fixed infinite loop in OffsetOrder.tsx (removed savedState from useEffect dependencies)
- Removed unused React imports from all client components
## Environment Variable Migration
- Migrated all VITE_ variables to NEXT_PUBLIC_ prefix
- Updated src/utils/config.ts to use direct static references (required for Next.js)
- Updated src/api/checkoutClient.ts, emailClient.ts, aisClient.ts for Next.js env vars
- Updated src/vite-env.d.ts types for Next.js environment
- Maintained backward compatibility with Docker window.env
## Layout & UX Improvements
- Fixed footer to always stay at bottom of viewport using flexbox
- Updated app/layout.tsx with flex-1 main content area
- Preserved glass morphism effects and luxury styling
## TypeScript & Build
- Fixed TypeScript strict mode compilation errors
- Removed unused imports and variables
- Fixed Axios interceptor types in project/src/api/wrenClient.ts
- Production build verified and passing
## Testing & Verification
- Tested calculator end-to-end in Playwright
- Verified Wren API integration working (11 portfolios fetched)
- Confirmed calculation: 5000L → 13.47 tons CO₂ → $3,206 total
- All navigation routes working correctly
- Footer positioning verified across all pages
## Files Added
- app/ directory with Next.js routes
- components/ directory with client components
- next.config.mjs, next-env.d.ts
- ENV_MIGRATION.md, NEXTJS_MIGRATION_COMPLETE.md documentation
## Files Modified
- Docker configuration for Next.js standalone builds
- package.json dependencies (Next.js, React 19)
- ts config.json for Next.js
- All API clients for new env var pattern
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Carbon Offset Distribution section:
- Remove "Carbon Offset" subheader from each project
- Remove colored dots next to project names
- Reduce padding from 30px to 20px
- Reduce title margin from 24px to 16px
- Reduce item padding from 14px to 10px
- Reduce spacing between items from 12px to 8px
Your Impact section:
- Reduce padding from 32px to 20px
- Reduce title font size from 26px to 22px
- Reduce subtitle margin from 28px to 16px
- Reduce card padding from 20px to 14px
- Reduce icon size from 36px to 30px
- Reduce value font size from 28px to 24px
- Reduce grid gap from 16px to 12px
- Reduce footer note margin from 20px to 12px
Overall more compact layout while maintaining readability.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Update default admin email from admin@ to matt@puffinoffset.com
- Add ADMIN_EMAIL environment variable to docker-compose.yml
- Add complete Email Configuration section to .env.example
- Admin email receives contact form submissions and order notifications
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Remove portfolio ID display from both:
- Email receipt template (receipt.hbs)
- Digital receipt page (CheckoutSuccess.tsx)
Portfolio information is internal and not needed in customer-facing receipts.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Remove escaped dollar signs in currency displays
- Fix percentage calculations (multiply decimal by 100)
- Force white text color on mobile for "Your Impact" header
- Add comma formatting to currency values (16343.46 → 16,343.46)
- Update portfolioColors.js to properly convert Wren API decimal percentages
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Replace Formspree integration with new backend email API
- Update Contact, OffsetOrder, and MobileOffsetOrder components
- Remove Formspree config from environment variables
- Add emailClient API for backend communication
- Centralize email sending through SMTP service
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add beautiful HTML email templates for receipts, admin notifications, and contact forms
- Implement SMTP email service with Nodemailer and Handlebars templating
- Add carbon equivalency calculations with EPA/DEFRA/IMO 2024 conversion factors
- Add portfolio color palette system for project visualization
- Integrate Wren API portfolio fetching in webhook handler
- Add light mode enforcement for email client compatibility
- Include Puffin logo from MinIO S3 in all templates
- Add test email endpoint for template validation
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Implement aggressive spacing compression (padding: 0.5rem, margins: 0.25rem)
- Reduce all font sizes by 10-25% for better vertical fit
- Compress line-height to 1.3 for tighter spacing
- Add print-color-adjust: exact to force gradients and colors to print
- Optimize logo, grid gaps, and section spacing
- Keep ALL gradient backgrounds and colorful styling
Result: Payment ID, Status, Email, Date now fit on page 1 with beautiful colors
Based on comprehensive Zen analysis of print layout optimization
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Replace pie chart with print-optimized table to eliminate label overlap
- Add extensive @media print CSS for high-contrast, professional output
- Convert all gradients to white backgrounds with black borders
- Optimize spacing and font sizes for print media
- Update CarbonImpactComparison with high-contrast print styling
- Ensure full page width utilization and proper page breaks
- Zero new dependencies (Pure CSS approach per consensus)
Resolves print quality issues: label collision, poor contrast, wasted whitespace
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Co-Authored-By: Claude <noreply@anthropic.com>
- Combine project name and percentage into single label line
- Format: "Project Name (25.0%)"
- Reduces vertical space and improves readability
- Cleaner, more compact label design
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Increase max width from max-w-3xl to max-w-4xl/5xl for better screen fit
- Add responsive breakpoints: full width on mobile, constrained on larger screens
- Add print-page-break class for automatic page breaks between sections
- Each major section now prints on separate page:
- Page 1: Order summary with payment details
- Page 2: Portfolio distribution chart
- Page 3: Carbon impact comparisons
- Improve print styling: remove shadows, borders, rounded corners
- Set print page size to standard letter format
- Reduce padding on mobile for better space utilization
Fixes receipt layout to be responsive on all screen sizes while
maintaining excellent print quality with proper page breaks.
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Co-Authored-By: Claude <noreply@anthropic.com>
- Remove middle tonnage line from chart labels
- Keep only project name and percentage
- Tonnage still visible in legend below chart
- Reduces label clutter and improves readability
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Reduce label font sizes: 10px name, 9px details (was 14px/12px)
- Add print-friendly smaller sizes: 7px/6px
- Make container fully responsive with max-width constraints
- Reduce label extension distance from ±50px to ±30px
- Reduce label radius from outerRadius+60 to outerRadius+35
- Use fixed pie dimensions (80/50) instead of calculated sizes
- Reduce connector line width from 2px to 1.5px
- Add print-specific max-width and height constraints
Fixes text overflow and makes chart fit properly on page while
maintaining readability and print quality.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Change buildcache from mode=max to mode=min to reduce cache layer size
and fix "413 Request Entity Too Large" error when pushing to Gitea registry.
mode=min only caches layers likely to be reused, significantly reducing
the cache size while maintaining build performance.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add Recharts dependency for professional chart rendering
- Create RechartsPortfolioPieChart component with built-in label collision detection
- Replace StaticPortfolioPieChart usage in CheckoutSuccess page
- Remove old StaticPortfolioPieChart component with problematic label overlap
- Fixes jumbled/overlapping labels on portfolio distribution chart
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Backend:
- Add getWrenPortfolios() to wrenClient.js with detailed logging including certification status
- Modify checkout endpoint to fetch and include portfolio data in order response
- Add stripeSessionId to order response for Payment ID display
Frontend:
- Create new StaticPortfolioPieChart component for printable receipt
- Add portfolio distribution visualization to CheckoutSuccess page
- Update receipt to show Payment ID (Stripe) and Offsetting Order ID (Wren)
- Implement responsive grid layout for order IDs
- Add print-friendly styling with Tailwind print classes
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Changed request parameters to match Wren API docs:
- 'portfolio' → 'portfolioId' (correct parameter name)
- 'dry_run' → 'dryRun' (camelCase as per API)
- Removed 'currency' and 'amount_charged' (API calculates amount)
- Removed 'source' object (not in API spec)
- Added 'note' with customer email for record keeping
API will now calculate and return the amount charged based on tons and portfolio.
Reference: https://www.wren.co/api/offset-orders documentation
Root causes fixed:
1. State only initialized on mount, not on navigation - Added useEffect to restore offset state when navigating to calculator page
2. CheckoutCancel auto-redirected too quickly (100ms) - Removed auto-redirect, user manually clicks Try Again
3. No restoration logic existed - New useEffect watches currentPage and savedState, restores when showOffsetOrder=true
Changes:
- App.tsx: Added restoration useEffect that triggers when currentPage='calculator' and savedState has offset state
- App.tsx: Added console logs for debugging state restoration
- CheckoutCancel.tsx: Removed auto-redirect useEffect and useEffect import
- CheckoutSuccess.tsx: Already correctly clears state on successful payment (verified)
User flow now:
1. Fill calculator → proceeds to offset order (state saved)
2. Click Proceed to Payment → Stripe checkout
3. Click browser back → lands on cancel page
4. Click Try Again → navigates to calculator
5. App detects savedState.showOffsetOrder=true → restores offset order screen with preserved data
- Added detailed request/response logging for createWrenOffsetOrder
- Added detailed request/response logging for getWrenOffsetOrder
- Logs include timestamp, duration, status, parameters, and full responses
- API token is masked for security (shows first 8 and last 4 chars)
- Logs will appear in Docker container logs with [WREN API SERVER] prefix
- Makes it easier to track and debug Wren API calls from webhooks
- Added payment_intent_data.receipt_email to checkout session
- Stripe will now automatically send receipt emails to customers after successful payment
- Extended CalculatorState interface to include offset order fields (showOffsetOrder, offsetTons, monetaryAmount, calculatorTypeUsed)
- App.tsx now saves offset state to localStorage when user proceeds to offset order
- App.tsx restores offset state from localStorage on mount
- App.tsx clears offset state when user navigates back from offset order
- Fixes issue where browser back button from Stripe returns to calculator input instead of offset order screen
Updated CheckoutCancel component to automatically redirect to the calculator
page after 100ms when the component mounts. This ensures:
- Users are immediately taken back to the calculator with their saved state
- No need to manually click "Try Again" button
- Calculator state is preserved from localStorage
- URL properly updates to /calculator via existing handleNavigate logic
User experience:
1. User cancels Stripe checkout
2. Stripe redirects to /checkout/cancel
3. CheckoutCancel component mounts and immediately redirects to calculator
4. Calculator displays with all previously entered values restored
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Changed receipt page logo from /puffin-logo.svg to /puffinOffset.webp
to match the logo used on the homepage for consistent branding.
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Co-Authored-By: Claude <noreply@anthropic.com>
Payment Methods Added:
- ACH bank transfers (us_bank_account) for US customers
- Stripe Link for saved payment methods including bank accounts
- Kept credit/debit card payments
Business Payment Features:
- customer_creation: 'always' - Creates Stripe customer for each payment
- billing_address_collection: 'required' - Collects full billing address
- phone_number_collection: Enabled for contact information
- tax_id_collection: Enabled for business tax ID (VAT, EIN, etc.)
Benefits:
- Businesses can now enter their tax ID for invoicing
- Customers can pay via bank transfer (ACH) as well as cards
- Full billing information collected for business records
- Stripe Link provides one-click checkout for returning customers
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Changed line item name from "Processing Fee (5%)" to "Processing Fee (3%)"
- This updates what customers see on the Stripe checkout page
- Backend constant was already updated to 0.03 in previous commit
- Frontend receipt page was already showing 3%
- All processing fee displays now consistently show 3%
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Co-Authored-By: Claude <noreply@anthropic.com>
- Updated TripCalculator custom amount field to use formatNumber helper
- Updated MobileCalculator custom amount field to use formatNumber helper
- Changed input type from "number" to "text" to display formatted values
- Strip commas when converting to numbers for calculations
- Custom amount inputs now display thousand separators for better readability
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Co-Authored-By: Claude <noreply@anthropic.com>
- Added detailed request/response logging for getPortfolios()
- Added detailed request/response logging for createOffsetOrder()
- Logs include timestamps, durations, request parameters, and response details
- Visual indicators: 🔵 for info, ✅ for success, ❌ for errors, ⚠️ for warnings
- Helps track API calls and debug issues in production console logs
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Co-Authored-By: Claude <noreply@anthropic.com>
## Changes Made:
### Backend (server/routes/checkout.js):
- Changed PROCESSING_FEE_PERCENT from 0.05 to 0.03
- Now calculates 3% fee instead of 5%
### Frontend (src/pages/CheckoutSuccess.tsx):
- Updated display text from "Processing Fee (5%)" to "Processing Fee (3%)"
- Receipt now shows correct percentage
## Impact:
- All new orders will have 3% processing fee
- Calculation, display, and Stripe charges all consistent at 3%
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
## Issues Fixed:
1. **Better Icon**: Replaced bell icon with leaf/plant icon for carbon offset
- More appropriate visual representation
2. **Currency Formatting**: Added thousand separators to all amounts
- Added formatCurrency() helper function
- Total now shows "$13,414.12" instead of "$13414.12"
- Applied to base amount, processing fee, and total
3. **Print Functionality**: Fixed empty page printing
- Removed "no-print" class from outer wrapper
- Only interactive elements (buttons) hidden when printing
- Receipt content now prints properly
4. **Status Display**: Shows "Confirmed" immediately after payment
- Uses Stripe session.paymentStatus for just-completed payments
- Falls back to order.status for older orders
- Prevents showing "Processing" when payment is already complete
## Technical Changes:
- CheckoutSuccess.tsx (line 27-32): Added formatCurrency helper
- CheckoutSuccess.tsx (line 120-121): Use Stripe payment status
- CheckoutSuccess.tsx (line 145): Removed no-print from wrapper
- CheckoutSuccess.tsx (line 208-210): Changed to leaf SVG icon
- CheckoutSuccess.tsx (lines 228, 234, 241): Use formatCurrency()
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
## Problem
- Calculator displayed rounded-up price per ton (e.g., $238/ton)
- Stripe checkout used exact Wren API price (e.g., $237.20/ton)
- This caused confusion when checkout amount differed from calculator
Example with 20,000 liters (53.9 tons):
- Calculator showed: 53.9 × $238 = $12,819
- Stripe charged: 53.9 × $237.20 = $12,775.35
## Solution
Modified both OffsetOrder.tsx and MobileOffsetOrder.tsx to:
- Keep displaying rounded-up price (Math.ceil) to users
- Pass roundedPricePerTon to Stripe checkout session
- Ensures calculator and Stripe always match exactly
## Changes
- OffsetOrder.tsx (line 170): Pass roundedPricePerTon to createCheckoutSession
- MobileOffsetOrder.tsx (lines 207-218): Add rounding to price display and calculations
Now the price users see is exactly what they pay.
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Co-Authored-By: Claude <noreply@anthropic.com>
## Changes Made:
### 1. Remove Carbon Impact Comparisons from Calculator Pages
- Removed from OffsetOrder.tsx (lines 532-542)
- Removed from MobileOffsetOrder.tsx (lines 429-432)
- Keep comparisons ONLY on CheckoutSuccess receipt page per user request
### 2. Comprehensive CheckoutSuccess Page Redesign
- Add Puffin logo prominently at top of receipt
- Implement status mapping: paid/fulfilled → "Confirmed", pending → "Processing"
- Add comprehensive print CSS (@media print rules)
- Hide interactive elements (buttons) when printing
- Optimize layout and spacing for printed receipt
- Professional receipt aesthetics with enhanced design:
* Beautiful gradient header with logo
* Highlighted carbon offset display with icon
* Enhanced pricing breakdown section
* Better typography and spacing throughout
* Professional metadata section with date
* Improved button styling with gradients and hover effects
* Email confirmation notice with icon
* Footer with contact information
### Benefits:
- Cleaner calculator UX (comparisons only on success)
- Professional printable receipt
- Clear "Confirmed" status (not "PENDING")
- Beautiful modern design that matches brand
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Co-Authored-By: Claude <noreply@anthropic.com>
