classDiagram
direction TB
classDef yellow fill:#FFFDE7;
classDef blue fill:#E3F2FD;
classDef green fill:#E8F5E9;
classDef purple fill:#F3E5F5;
classDef teal fill:#E0F7FA;
classDef orange fill:#FFF3E0;
class User {
+int id
+string email
+string name
+string passwordHash
+datetime createdAt
+login(email, password) bool
+logout() void
+updateProfile(data) User
}
class Order {
+int id
+string status
+decimal subtotal
+decimal tax
+decimal total
+datetime placedAt
+place() void
+cancel(reason) bool
+getItems() OrderItem[]
}
class OrderItem {
+int id
+int quantity
+decimal unitPrice
+decimal lineTotal
+getSubtotal() decimal
}
class Product {
+int id
+string sku
+string name
+string description
+decimal price
+int stock
+isAvailable() bool
+decrementStock(qty) void
}
class Category {
+int id
+string name
+string slug
+getProducts() Product[]
}
class Address {
+int id
+string street
+string city
+string country
+string postalCode
}
class Payment {
+int id
+string method
+string status
+decimal amount
+datetime processedAt
+process() bool
+refund() bool
}
User "1" --> "0..*" Order : places
User "1" --> "1..*" Address : has
Order "1" --> "1..*" OrderItem : contains
Order "1" --> "1" Address : ships to
Order "1" --> "1" Payment : paid via
OrderItem "0..*" --> "1" Product : references
Product "0..*" --> "1" Category : belongs to
cssClass "User" blue
cssClass "Order" orange
cssClass "OrderItem" green
cssClass "Product" yellow
cssClass "Category" purple
cssClass "Address" teal
cssClass "Payment" purple