Create a modern Nigerian food-ordering mobile app called “ChopNow.” Use a clean, premium and friendly interface designed for young Nigerian customers. The app should allow users to browse Nigerian meals, view food details, add meals to a cart, checkout, and track their delivery. Create a consistent mobile UI across the Welcome, Login, Home, Categories, Food Details, Cart, Checkout, Order Tracking, and Profile screens. Use clear typography, attractive food imagery, intuitive navigation, rounded cards, and a professional visual hierarchy. Make the final result look like a polished product ready to present to a client.