graph TB
    subgraph "E-Commerce Domain"
        subgraph "Order Management"
            ORDER[Order]
            ITEM[Order Item]
            FULFILL[Fulfillment]
        end

        subgraph "Product Catalog"
            PROD[Product]
            VAR[Variation]
            CAT[Category]
            ATTR[Attributes]
        end

        subgraph "Payment Processing"
            PAY[Payment Transaction]
            REFUND[Refund]
            BNPL[Buy Now Pay Later]
        end

        subgraph "Shipping"
            SHIP[Shipment]
            TRACK[Tracking]
            LABEL[Labels]
        end

        subgraph "Inventory"
            STOCK[Stock]
            ACTION[Stock Actions]
            TRANSFER[Transfers]
        end

        subgraph "Suppliers"
            VENDOR[Vendor]
            SUPORDER[Supplier Order]
        end
    end

    ORDER --> ITEM
    ITEM --> PROD
    ORDER --> PAY
    ORDER --> FULFILL
    FULFILL --> SHIP
    SHIP --> TRACK

    PROD --> VAR
    PROD --> CAT
    VAR --> ATTR
    PROD --> STOCK

    ORDER --> REFUND
    PAY --> BNPL

    STOCK --> ACTION
    STOCK --> TRANSFER
    STOCK --> SUPORDER
    SUPORDER --> VENDOR

    style ORDER fill:#e1f5fe
    style PROD fill:#f3e5f5
    style PAY fill:#fff3e0
    style SHIP fill:#e8f5e9

erDiagram
    TENANT ||--o{ ORDER : has
    TENANT ||--o{ PRODUCT : has
    TENANT ||--o{ VENDOR : has

    ORDER ||--o{ ORDER_ITEM : contains
    ORDER ||--o{ PAYMENT_TRANSACTION : has
    ORDER ||--o{ SHIPMENT : generates
    ORDER ||--o{ ORDER_FULFILLMENT : tracks
    ORDER }o--|| CONTACT : placed_by
    ORDER }o--o| VOUCHER : uses

    ORDER_ITEM }o--|| PRODUCT : references
    ORDER_ITEM }o--o| PRODUCT_VARIATION : specifies

    PRODUCT ||--o{ PRODUCT_VARIATION : has
    PRODUCT ||--o{ PRODUCT_IMAGE : has
    PRODUCT }o--|| PRODUCT_MAIN_CATEGORY : belongs_to
    PRODUCT }o--o{ PRODUCT_SUB_CATEGORY : assigned_to
    PRODUCT }o--o| VENDOR : supplied_by
    PRODUCT ||--o{ PRODUCT_STOCK_AVAILABLE : tracked_in

    PRODUCT_VARIATION ||--o{ VARIATION_ATTRIBUTE_VALUE : has

    SHIPMENT ||--o{ TRACKING_EVENT : logs
    SHIPMENT }o--|| SHIPPING_CARRIER : uses
    SHIPMENT }o--|| SHIPPING_SERVICE : uses
    SHIPMENT ||--o| SHIPPING_LABEL : generates

    PAYMENT_TRANSACTION }o--|| PAYMENT_METHOD : uses
    PAYMENT_TRANSACTION ||--o{ PAYMENT_REFUND : may_have

    VENDOR ||--o{ SUPPLIER_ORDER : receives
    SUPPLIER_ORDER ||--o{ SUPPLIER_ORDER_ITEM : contains

    STOCK_ACTION }o--|| PRODUCT : affects
    INVENTORY_TRANSFER ||--o{ INVENTORY_TRANSFER_ITEM : contains

    ORDER {
        string id PK
        string tenantId FK
        string siteId FK
        string contactId FK
        string invoiceNumber
        enum invoiceStatus
        enum orderType
        decimal totalAmount
        string currency
        timestamp invoiceDate
        timestamp deliveryDate
        string paymentIntentId
    }

    ORDER_ITEM {
        string id PK
        string orderId FK
        string productId FK
        string variationId FK
        int quantity
        decimal unitPrice
        decimal totalPrice
        decimal taxRate
    }

    PRODUCT {
        string id PK
        string tenantId FK
        string name
        string reference
        decimal price
        decimal salePrice
        int stock
        enum productType
        boolean manageStock
        int lowStockThreshold
    }

    SHIPMENT {
        string id PK
        string orderId FK
        string carrierId FK
        string trackingNumber
        enum status
        decimal weight
        string labelUrl
        timestamp shippedDate
        timestamp deliveredDate
    }

    PAYMENT_TRANSACTION {
        string id PK
        string orderId FK
        string paymentMethodId FK
        decimal amount
        string currency
        enum status
        string externalId
        timestamp processedAt
    }

flowchart LR
    subgraph "E-Commerce Domain"
        ORDER[Orders]
        PROD[Products]
        PAY[Payments]
        SHIP[Shipping]
    end

    subgraph "External Systems"
        STRIPE[Stripe]
        PS[PrestaShop]
        CARRIERS[Shipping Carriers]
    end

    subgraph "Internal Domains"
        CRM[CRM]
        INV[Inventory]
        ACC[Accounting]
    end

    PAY <--> STRIPE
    PROD <--> PS
    ORDER <--> PS
    SHIP <--> CARRIERS

    ORDER --> CRM
    ORDER --> INV
    PAY --> ACC

    style STRIPE fill:#635bff,color:#fff
    style PS fill:#df0067,color:#fff