curriculum-project-hub/docs/architecture/likec4/specification.c4

specification {
  element actor {
    style {
      shape person
      color indigo
    }
  }

  element system {
    style {
      color primary
    }
  }

  element externalSystem {
    style {
      color gray
    }
  }

  element app {
    style {
      shape browser
      color green
    }
  }

  element service {
    style {
      shape component
      color primary
    }
  }

  element adapter {
    style {
      shape component
      color amber
    }
  }

  element runtime {
    style {
      shape component
      color secondary
    }
  }

  element store {
    style {
      shape storage
      color muted
    }
  }

  element entity {
    style {
      shape storage
      color muted
    }
  }

  relationship sync {
    line solid
  }

  relationship async {
    line dotted
  }

  relationship reads {
    line dashed
    color gray
  }

  relationship writes {
    line solid
    color gray
  }
}