build a nice looking ui for this project use mock data for now so I can get an idea of what you have aachieved with the ui. come a nice color scheme to make this really turn out out well.

Library and Book Store Inventory System 📚

Build a software solution that manages the tracking, cataloging, and circulation of books in a library or bookstore, including inventory control, lending and purchasing, and sales management.
Theme: Management Systems From Scratch

For this coding challenge, the challenge statements are specific to management systems and applications. Each challenge statement is a specific project you should be building. You can integrate AI into these systems. Goodluck!
you can add cool features that would make this project standout. but make sure to update the endpoints so I know exactly what I am working with.

const express = require("express");
const router = express.Router();

// Book Management
router.get("/books", getAllBooks); // Fetch all books
router.get("/books/:id", getBookById); // Fetch a single book
router.post("/books", addBook); // Add a new book
router.put("/books/:id", updateBook); // Update book details
router.delete("/books/:id", deleteBook); // Remove a book

// Inventory Management
router.get("/inventory", getInventory); // View inventory stock
router.post("/inventory", updateInventory); // Update stock levels

// Lending System
router.post("/lend", lendBook); // Lend a book
router.post("/return", returnBook); // Return a borrowed book
router.get("/borrowers", getBorrowers); // Get list of borrowers

// Sales Management
router.post("/sales", recordSale); // Record a book sale
router.get("/sales", getSalesReport); // Fetch sales reports

// User & Membership Management
router.post("/users", registerUser); // Register a new user
router.get("/users/:id", getUserProfile); // Get user details
router.put("/users/:id", updateUserProfile); // Update user details

// Search & Recommendations
router.get("/search", searchBooks); // Search books by title, author, genre
router.get("/recommendations/:userId", getRecommendations); // Personalized recommendations

module.exports = router;

Color Scheme (Dark Mode for a Premium Look)

Primary: #4CAF50 (Emerald Green) – Highlights success, growth, and book management.  
Secondary: #FFC107 (Amber Yellow) – Draws attention to important elements like sales or alerts.  
Background: #121212 (Deep Charcoal Black) – Creates a sleek, modern dark UI.  
Card Background: #1E1E1E (Dark Gray) – Keeps the UI clean and minimalist.  
Text: #E0E0E0 (Light Gray) – Ensures readability on dark backgrounds.  
Accent: #03A9F4 (Sky Blue) – Adds a fresh touch for action buttons and highlights.  

This scheme will work great for v0.dev when designing the UI. It provides a sleek, management-system vibe while maintaining readability and usability.