Readme update

README.md

@@ -1,14 +1,17 @@
-# Car Fuel Tracking App
+# Car Fuel & EV Charging Tracking App
 
-A modern web application to track your car's fuel fill-ups, mileage, and fuel statistics. Built with Next.js, React, Prisma, and PostgreSQL, it provides a beautiful dashboard for managing your vehicles and analyzing fuel efficiency over time.
+A modern web application to track your car's fuel fill-ups, electric vehicle (EV) charging sessions, mileage, and fuel/energy statistics. Built with Next.js, React, Prisma, and PostgreSQL, it provides a beautiful dashboard for managing your vehicles and analyzing efficiency over time—whether you drive gas, diesel, or electric.
 
 ## Features
 
-- 🚗 **Multi-car support**: Track multiple vehicles, each with its own stats and history.
-- ⛽ **Fill-up logging**: Record every fuel fill-up with mileage, liters, cost, and currency.
-- 🛣️ **Mileage tracking**: Log odometer readings to monitor your driving habits.
-- 📊 **Statistics dashboard**: View total distance, fuel used, cost, average consumption, and more.
-- 🔒 **Authentication**: Secure login and registration with hashed passwords.
+- 🚗 **Multi-car support**: Track multiple vehicles (gas, diesel, or electric), each with its own stats and history.
+- ⛽ **Fill-up & charging logging**: Record every fuel fill-up (liters/gallons) or EV charge (kWh), with mileage, cost, and currency.
+- 🛣️ **Mileage tracking**: Log odometer readings to monitor your driving habits and efficiency.
+- 📊 **Statistics dashboard**: View total distance, fuel/energy used, cost, average consumption (L/100km, MPG, or kWh/100km), and more.
+- 🔄 **Unit-aware UI**: Metric/imperial toggle for combustion vehicles; automatic metric units for electric cars (kWh, kWh/100km).
+- 📈 **Interactive charts**: Visualize fuel/energy consumption trends over time.
+- ⬇️ **CSV export**: Download your stats for further analysis.
+- 🔒 **Authentication**: Secure login and registration with hashed passwords (NextAuth.js).
 - 🌗 **Responsive & modern UI**: Clean, mobile-friendly design with dark mode support.
 
 ## Tech Stack
@@ -63,8 +66,8 @@ Open [http://localhost:3000](http://localhost:3000) in your browser.
 ## Project Structure
 
 - `src/app/` — Next.js app directory (routes, pages, API)
-- `src/components/` — Reusable UI components
-- `prisma/schema.prisma` — Database schema
+- `src/components/` — Reusable UI components (cards, charts, toggles, etc.)
+- `prisma/schema.prisma` — Database schema (User, Car, FillUp, MileageEntry, enums for FuelType and Currency)
 - `src/lib/` — Auth and Prisma helpers
 - `public/` — Static assets
 
@@ -75,8 +78,20 @@ Open [http://localhost:3000](http://localhost:3000) in your browser.
 - `npm run lint` — Lint code
 
 ## Database Schema
-See [`prisma/schema.prisma`](prisma/schema.prisma) for models: `User`, `Car`, `FillUp`, `MileageEntry`, enums for `FuelType` and `Currency`.
+See [`prisma/schema.prisma`](prisma/schema.prisma) for models:
+- `User`: Authentication and user management
+- `Car`: Vehicle details (make, model, year, fuel type)
+- `FillUp`: Fuel or charging session records
+- `MileageEntry`: Odometer readings
+- Enums: `FuelType` (GASOLINE, DIESEL, ELECTRIC), `Currency`
+
+## Notable Implementation Details
+
+- **EV support**: The UI and logic automatically switch to kWh and kWh/100km for electric cars, disabling imperial units and MPG where not applicable.
+- **API endpoints**: RESTful endpoints for cars, fill-ups, mileage, and authentication.
+- **Type safety**: End-to-end TypeScript, including API routes and Prisma models.
+- **Modern UX**: Loading skeletons, tooltips, and accessibility best practices.
 
 ---
 
-> Built with passion using Next.js, Prisma, and Tailwind CSS.
+> Built with passion using Next.js, Prisma, and Tailwind CSS. Contributions welcome!