Optimize Betting Analytics SaaS

OddsAI Pro is a platform that offers automated "Value Bets" analysis using artificial intelligence. Users:

1. Create a free account
2. Buy credit packages (BRL via Mercado Pago / USD via Stripe)
3. Use 1 credit to request a betting analysis
4. Receive betting recommendations classified by risk/confidence
5. Track results in "Bankroll Management" (BetTracker)

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### CURRENT TECH STACK:

**Frontend:**
- HTML5, CSS3, Vanilla JavaScript
- Responsive design
- i18n system - 4 languages: PT, EN, ES, FR
- Subfolders for each language: `/en/`, `/es/`, `/fr/`

**Backend:**
- Python 3.10 (custom HTTP server with socketserver)
- SQLite database
- API integrations: OddAlerts (odds data), Grok/OpenAI (AI analysis)

**Infrastructure:**
- Ubuntu 22.04 VPS on GoDaddy
- Nginx reverse proxy
- SSL/HTTPS via Let's Encrypt (Certbot)
- Domain: oddsaipro.com

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### CURRENT ISSUES THAT NEED FIXING:

#### 1. **Backend/API Issues:**
- [ ] Python server sometimes crashes and needs manual restart
- [ ] No automatic monitoring system (needs healthcheck/auto-restart)
- [ ] Email sending (Titan SMTP) not working (password recovery)
- [ ] Missing robust input validation on endpoints
- [ ] Error logs not properly persisted

#### 2. **Frontend/UX Issues:**
- [ ] Some translations are mixed (English texts appear in Portuguese version)
- [ ] Language selector sometimes doesn't persist preference
- [ ] Mobile menu has closing issues on some devices
- [ ] Some CTA buttons not working correctly
- [ ] "New Analysis" page needs UX flow improvements

#### 3. **Payment Issues:**
- [ ] Mercado Pago integration (BRL) needs production validation
- [ ] Stripe integration (USD) needs configuration and testing
- [ ] Payment webhooks not 100% functional
- [ ] Missing proper payment confirmation page

#### 4. **SEO/Performance Issues:**
- [ ] Meta tags not optimized for all languages
- [ ] Sitemap.xml needs update
- [ ] Robots.txt not properly configured
- [ ] Images not optimized (WebP, lazy loading)
- [ ] CSS/JS not minified

#### 5. **Security Issues:**
- [ ] Some endpoints need rate limiting
- [ ] Missing CSRF protection on forms
- [ ] Security headers need review
- [ ] Access logs not being stored properly

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### WHAT NEEDS TO BE DONE:

#### HIGH PRIORITY:
1. **Fix email system** - Make password recovery work (can change SMTP if needed)
2. **Stabilize backend** - Implement auto-restart, healthcheck, and proper logging
3. **Fix payment flow** - Test and validate Mercado Pago and Stripe in production
4. **Fix translation issues** - Ensure each language displays only texts in correct language

#### MEDIUM PRIORITY:
5. **Improve analysis page UX** - More intuitive flow
6. **Fix mobile menu** - Work perfectly on all devices
7. **Implement loading states** - Visual feedback during operations
8. **Improve error pages** - Custom 404, 500

#### LOW PRIORITY:
9. **SEO optimization** - Meta tags, sitemap, robots.txt
10. **Performance optimization** - Minification, cache, lazy loading
11. **Implement analytics** - Google Analytics or similar
12. **Improve admin dashboard** - More info and controls

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### REQUIRED SKILLS:

**Mandatory:**
- Python (web server experience)
- JavaScript (ES6+, DOM manipulation)
- HTML5/CSS3 (responsive)
- Linux/Ubuntu (server administration)
- Nginx (configuration)
- Git (version control)
- SQLite or PostgreSQL
- REST APIs

**Desirable:**
- Experience with Stripe/Mercado Pago
- i18n experience
- PWA experience
- Technical SEO knowledge
- Experience with betting/gambling systems

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### EXPECTED DELIVERABLES:

1. Fixed code working in production
2. Documentation of changes made
3. Basic functionality tests
4. Maintenance instructions (if applicable)
5. 7-day post-delivery support for bugs

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### TO APPLY:

Please include in your proposal:

1. **Relevant experience** - Similar projects you've done
2. **Estimated timeline** - How long to complete
3. **Price** - Fixed or hourly rate
4. **Availability** - Hours per week you can dedicate
5. **Questions** - Project clarifications needed

**Bonus:** If you have experience with betting platforms, gambling, or fintech, mention it!

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**Tags/Skills:** Python, JavaScript, HTML, CSS, Nginx, Linux, API, REST, Stripe, Mercado Pago, i18n, SQLite, VPS, Ubuntu, Full-Stack