sequenceDiagram
    participant Client
    participant Server as HTTP Server
    participant Kernel as HTTP Kernel
    participant Pipeline as Middleware Pipeline
    participant Router
    participant Controller
    participant Services
    participant Events
    participant DB as Database

    %% Initial Request
    Client->>Server: HTTP Request
    activate Server
    Server->>Kernel: Handle Request
    activate Kernel

    %% Global Middleware
    Kernel->>Pipeline: Process Global Middleware
    activate Pipeline
    Note over Pipeline: - Check Maintenance Mode<br>- Validate Post Size<br>- Trim Strings<br>- Convert Empty to Null
    Pipeline-->>Kernel: Request Processed
    deactivate Pipeline

    %% Route Matching
    Kernel->>Router: Match Route
    activate Router
    Router-->>Kernel: Route Found
    deactivate Router

    %% Route Middleware
    Kernel->>Pipeline: Process Route Middleware
    activate Pipeline
    Note over Pipeline: - Authentication<br>- Authorization<br>- Throttling<br>- CSRF Protection
    Pipeline-->>Kernel: Request Processed
    deactivate Pipeline

    %% Controller Action
    Kernel->>Controller: Handle Request
    activate Controller

    %% Service Layer
    Controller->>Services: Process Business Logic
    activate Services
    
    %% Database Operations
    Services->>DB: Query Data
    activate DB
    DB-->>Services: Data Retrieved
    deactivate DB

    %% Event Dispatching
    Services->>Events: Dispatch Events
    activate Events
    Note over Events: - Model Events<br>- Custom Events<br>- System Events
    Events-->>Services: Events Processed
    deactivate Events

    Services-->>Controller: Logic Processed
    deactivate Services

    %% Response Generation
    Controller-->>Kernel: Generate Response
    deactivate Controller

    %% Response Middleware
    Kernel->>Pipeline: Process Response Middleware
    activate Pipeline
    Note over Pipeline: - Session<br>- Cookies<br>- Headers<br>- Response Compression
    Pipeline-->>Kernel: Response Processed
    deactivate Pipeline

    %% Final Response
    Kernel-->>Server: Return Response
    deactivate Kernel
    Server-->>Client: HTTP Response
    deactivate Server

    %% Style Definitions
    style Client fill:#f9f,stroke:#333,stroke-width:2px
    style Server fill:#bbf,stroke:#333,stroke-width:2px
    style Kernel fill:#bbf,stroke:#333,stroke-width:2px
    style Pipeline fill:#bfb,stroke:#333,stroke-width:2px
    style Router fill:#bfb,stroke:#333,stroke-width:2px
    style Controller fill:#bfb,stroke:#333,stroke-width:2px
    style Services fill:#fbb,stroke:#333,stroke-width:2px
    style Events fill:#fbb,stroke:#333,stroke-width:2px
    style DB fill:#fbb,stroke:#333,stroke-width:2px

    %% Notes
    Note right of Server: Entry Point
    Note right of Kernel: Request Processing
    Note right of Pipeline: Middleware Chain
    Note right of Router: Route Resolution
    Note right of Controller: Business Logic
    Note right of Services: Service Layer
    Note right of Events: Event System
    Note right of DB: Data Layer