graph TB
    subgraph "📱 Lumo Android App"
        MA["MainActivity
        📋 Main Entry Point"]
        
        subgraph "🎛️ Manager Layer"
            BMWrapper["BillingManagerWrapper
            💳 Payment Processing"]
            WVM["WebViewManager
            🌐 WebView Control"]
            PM["PermissionManager
            🔐 Permissions & File Access"]
            UIM["UIManager
            🎨 UI Configuration"]
        end
        
        subgraph "🧠 ViewModels & State"
            MAVM["MainActivityViewModel
            📊 App State Management"]
            SVM["SubscriptionViewModel
            💰 Subscription Logic"]
            VMF["ViewModelFactory
            🏭 ViewModel Creation"]
        end
        
        subgraph "📦 Data Layer"
            SR["SubscriptionRepository
            📄 Interface"]
            SRI["SubscriptionRepositoryImpl
            🔧 Implementation"]
            DP["DependencyProvider
            ⚡ Lightweight DI"]
        end
        
        subgraph "🌐 WebView Integration"
            WVS["WebViewScreen
            📺 WebView UI Component"]
            WAI["WebAppInterface
            🔗 JS ↔ Android Bridge"]
            JSI["JsInjector
            💉 JavaScript Injection"]
        end
        
        subgraph "💳 Billing System"
            BM["BillingManager
            🏪 Google Play Billing"]
            PD["PaymentDialog
            💸 Payment UI"]
        end
        
        subgraph "🎤 Speech Recognition"
            SRM["SpeechRecognitionManager
            🗣️ Voice Input"]
            SIS["SpeechInputSheet
            🎙️ Voice UI"]
        end
        
        subgraph "📱 UI Components"
            SC["SubscriptionComponent
            💎 Premium Features UI"]
            LS["LoadingScreen
            ⏳ Loading States"]
            Theme["Theme System
            🎨 Material Design 3"]
        end
        
        subgraph "🛠️ Utilities"
            Utils["Utils Package
            🔧 Helper Functions"]
            Models["Models
            📋 Data Classes"]
            Config["LumoConfig
            ⚙️ App Configuration"]
        end
        
        subgraph "🏗️ Build Variants"
            Standard["Standard Variant
            🔧 WebView Debugging ON"]
            NoDebug["NoWebViewDebug Variant
            🛡️ GrapheneOS Compatible"]
        end
    end
    
    subgraph "🌍 External Services"
        Web["Lumo Web App
        🌐 lumo.proton.me"]
        GP["Google Play Billing
        💳 Payment Processing"]
        Android["Android System
        📱 Platform Services"]
    end
    
    %% Main connections
    MA --> BMWrapper
    MA --> WVM
    MA --> PM
    MA --> UIM
    MA --> MAVM
    MA --> SRM
    
    %% Manager connections
    BMWrapper --> BM
    WVM --> WVS
    WVM --> WAI
    
    %% ViewModel connections
    VMF --> SVM
    SVM --> SRI
    SRI --> DP
    
    %% WebView connections
    WVS --> WAI
    WAI --> JSI
    WVS --> Web
    
    %% UI connections
    PD --> SVM
    SC --> SVM
    SIS --> SRM
    
    %% External connections
    BM --> GP
    SRM --> Android
    WVS --> Web
    
    %% Build variant connections
    Standard -.-> WVS
    NoDebug -.-> WVS
    
    %% Styling
    classDef manager fill:#e1f5fe
    classDef viewmodel fill:#f3e5f5
    classDef data fill:#e8f5e8
    classDef webview fill:#fff3e0
    classDef billing fill:#fce4ec
    classDef speech fill:#f1f8e9
    classDef ui fill:#e3f2fd
    classDef utils fill:#fafafa
    classDef external fill:#ffebee
    classDef variant fill:#e0f2f1
    
    class BMWrapper,WVM,PM,UIM manager
    class MAVM,SVM,VMF viewmodel
    class SR,SRI,DP data
    class WVS,WAI,JSI webview
    class BM,PD billing
    class SRM,SIS speech
    class SC,LS,Theme ui
    class Utils,Models,Config utils
    class Web,GP,Android external
    class Standard,NoDebug variant