flowchart LR
A[Permintaan Barang] --> B{Cek Stok}
B -->|Stok OK| C[Kirim ke User]
B -->|Stok < Min| D[Buat PO]
D --> E[Approval PO]
E --> F{Disetujui?}
F -->|Ya| G[Kirim PO ke Supplier]
F -->|Tidak| H[Revisi PO]
H --> D
G --> I[Penerimaan Barang]
I --> J[Update Stok]
J --> K[Pembayaran]

classDef green fill:#e8f5e9,stroke:#1b5e20
classDef orange fill:#fff3e0,stroke:#e65100
classDef blue  fill:#e1f5fe,stroke:#01579b
class A,C,J,K green
class B,D,E,F,G orange
class H blue