flowchart LR
    subgraph QUALIFY["Qualification"]
        direction TB
        START((" ")):::startEvent
        OPP["New Opportunity\n(Pex / STOex / OMex)"]
        GATE{"Delivery\nFramework\nGate"}:::gateway
        PEX_OUT["Pex\nExcluded"]:::dimmed
        OMEX_AUTO["OMex\nAuto-Qualified"]:::qualified
        STOEX_Q{"STOex Gate\nWork Orders?\nKPI Mgmt?"}:::gateway
        STOEX_YES["STOex\nQualified"]:::qualified
        STOEX_NO["STOex\nNot Required"]:::dimmed
        START --> OPP
        OPP --> GATE
        GATE -->|"Pex"| PEX_OUT
        GATE -->|"OMex"| OMEX_AUTO
        GATE -->|"STOex"| STOEX_Q
        STOEX_Q -->|"Yes to either"| STOEX_YES
        STOEX_Q -->|"No to both"| STOEX_NO
    end

    subgraph ESTIMATE["Estimation"]
        direction TB
        BASE["Base Questions\n(A.1 - A.12)"]:::document
        MODULES["Module Selection\n(22 modules)"]:::document
        RESULTS["Build / Run /\nHypercare Results"]:::document
        BASE --> MODULES
        MODULES --> RESULTS
    end

    subgraph PIPELINE["Deployment Pipeline"]
        direction LR
        EST_STAGE["Estimated"]
        APPROVED["Approved"]
        BUILD["In Build"]
        HYPER["Hypercare"]
        BAU_END["BAU"]:::endStage
        EST_STAGE --> APPROVED
        APPROVED --> BUILD
        BUILD --> HYPER
        HYPER --> BAU_END
    end

    OMEX_AUTO --> BASE
    STOEX_YES --> BASE
    RESULTS --> EST_STAGE

    classDef startEvent fill:#4CAF50,stroke:#2E7D32,color:#fff,rx:50,ry:50
    classDef gateway fill:#FF9800,stroke:#E65100,color:#fff
    classDef document fill:#E3F2FD,stroke:#1565C0,color:#1565C0
    classDef qualified fill:#E8F5E9,stroke:#2E7D32,color:#2E7D32
    classDef dimmed fill:#eee,stroke:#999,color:#999
    classDef endStage fill:#E0F2F1,stroke:#00695C,color:#00695C