%%{init: {'theme':'base', 'flowchart': {'rankSpacing': 80, 'nodeSpacing': 55, 'curve': 'basis'}}}%%
flowchart TB
  subgraph L1["Application Layer"]
    CLI["hw-cli"]
    APP["SwiftUI app (iOS/macOS)"]
  end

  subgraph L2["FFI Layer"]
    FFI["hw-ffi (UniFFI)"]
  end

  subgraph L3["Wallet Layer"]
    WALLET["hw-wallet (shared orchestration)"]
    CHAIN["hw-chain (chain config)"]
  end

  subgraph L4["Protocol Layer"]
    CONNECT["trezor-connect (THP workflow/backend)"]
    BLE["ble-transport"]
    THP["thp-core / thp-crypto / thp-codec / thp-proto"]
  end

  subgraph L5["Hardware Layer"]
    DEVICE["Trezor Safe 7"]
  end

  CLI --> WALLET
  APP --> FFI
  FFI --> WALLET
  WALLET --> CHAIN
  WALLET --> CONNECT
  CONNECT --> BLE
  CONNECT --> THP
  BLE --> DEVICE

  classDef appLayer fill:#E3F2FD,stroke:#1E88E5,color:#0D47A1,stroke-width:1.5px;
  classDef ffiLayer fill:#E8F5E9,stroke:#43A047,color:#1B5E20,stroke-width:1.5px;
  classDef walletLayer fill:#FFF8E1,stroke:#FB8C00,color:#E65100,stroke-width:1.5px;
  classDef protoLayer fill:#ECEFF1,stroke:#546E7A,color:#263238,stroke-width:1.5px;
  classDef hwLayer fill:#FFEBEE,stroke:#E53935,color:#B71C1C,stroke-width:1.5px;

  class CLI,APP appLayer;
  class FFI ffiLayer;
  class WALLET,CHAIN walletLayer;
  class CONNECT,BLE,THP protoLayer;
  class DEVICE hwLayer;