@startuml architecture
!theme plain
skinparam backgroundColor #FFFFFF
skinparam defaultFontName Arial
skinparam packageStyle rectangle

title The Biergarten App - Layered Architecture

package "API Layer" #E3F2FD {
  [API.Core\nASP.NET Core Web API] as API
  note right of API
    - Controllers (Auth, User)
    - Swagger/OpenAPI
    - Middleware
    - Health Checks
  end note
}

package "Service Layer" #F3E5F5 {
  [Service.Auth] as AuthSvc
  [Service.UserManagement] as UserSvc
  note right of AuthSvc
    - Business Logic
    - Validation
    - Orchestration
  end note
}

package "Infrastructure Layer" #FFF3E0 {
  [Infrastructure.Repository] as Repo
  [Infrastructure.Jwt] as JWT
  [Infrastructure.PasswordHashing] as PwdHash
  [Infrastructure.Email] as Email
}

package "Domain Layer" #E8F5E9 {
  [Domain.Entities] as Domain
  note right of Domain
    - UserAccount
    - UserCredential
    - UserVerification
  end note
}

database "SQL Server" {
  [Stored Procedures] as SP
  [Tables] as Tables
}

' Relationships
API --> AuthSvc
API --> UserSvc

AuthSvc --> Repo
AuthSvc --> JWT
AuthSvc --> PwdHash
AuthSvc --> Email

UserSvc --> Repo

Repo --> SP
Repo --> Domain
SP --> Tables

AuthSvc --> Domain
UserSvc --> Domain

' Notes
note left of Repo
  SQL-first approach
  All queries via
  stored procedures
end note

@enduml