spring-app

FULL PROMPT (Claude) You are a senior product engineer and UI/UX designer. I already have a working web application called buy.AI (an AI deal discovery platform for finding undervalued products for resale). I want you to upgrade and improve the existing product with the following requirements: ⸻ 1. Marketplace Expansion Enhance the system so it supports multi-source deal aggregation: * Facebook Marketplace style listings * Local classified ads platforms * European-wide marketplaces If real APIs are not available, simulate data but design architecture as if real integrations will be added later. ⸻ 2. Advanced Location Intelligence Improve geolocation system: * Automatically detect user location on page load * Prioritize deals in this order: 1. Closest deals (0–10km) 2. Nearby deals (10–100km) 3. Regional deals (100–500km) 4. Europe-wide deals if better opportunities exist * Add radius-based expansion logic ⸻ 3. AI Search System Upgrade Improve homepage search bar into an intelligent AI query system: * Users type a product (e.g. “iPhone 14”, “Audi A4”, “apartment Zagreb”) * System automatically detects category and intent * Returns best deals instantly across all sources * Combines local + international listings into one ranked feed ⸻ 4. Deal Ranking & AI Scoring System Each listing must include: * Listing price * Estimated market value * Estimated profit margin * Distance from user * Risk score (Low / Medium / High) * Resale speed estimate * Final AI score (0–100) Improve ranking logic: * Profit potential is highest priority * Distance is secondary priority * Risk reduces score significantly ⸻ 5. UI/UX Improvements Upgrade UI to modern SaaS standard: * Use clean modern font (Inter or SF Pro style) * Minimal, premium design like Stripe/Airbnb * Improve spacing, typography, and card layout * Make deal cards visually clear and structured * Add visual AI score badge for each listing ⸻ 6. System Behaviour * Keep MVP-first approach (simple but scalable) * If something cannot be implemented, simulate it but design architecture for future real data integration * Ensure performance and simplicity over complexity ⸻ 7. Product Goal The goal is to turn buy.AI into a real AI-powered marketplace intelligence tool that helps users instantly find profitable resale opportunities anywhere in Europe. ⸻ Now: * Improve the existing system architecture * Suggest necessary backend/data structure changes * Update UI/UX design * And ensure the product is ready for MVP launch