digraph data_flow {
    rankdir=LR
    bgcolor="#0a0e17"
    fontname="Helvetica"
    node [fontname="Helvetica" fontsize=10 style=filled color="#1e2a4a" fontcolor="#e8eaf0"]
    edge [fontname="Helvetica" fontsize=9 fontcolor="#8892a8" color="#4a5568"]

    label="Data Flow — Real vs Mock"
    labelloc=t
    fontsize=14
    fontcolor="#0066ff"

    subgraph cluster_real {
        label="LIVE DATA (no API key)"
        color="#00c853"
        fontcolor="#00c853"
        style=rounded

        openmeteo [label="OpenMeteo API\napi.open-meteo.com\n\nWeather at waypoints\nHub forecasts" fillcolor="#0d2a0d" shape=box fontcolor="#00c853"]
        faa [label="FAA NASSTATUS\nnasstatus.faa.gov\n\nGround stops\nGround delay programs\nClosures" fillcolor="#0d2a0d" shape=box fontcolor="#00c853"]
    }

    subgraph cluster_mock {
        label="SCENARIO DATA (switchable)"
        color="#ffc107"
        fontcolor="#ffc107"
        style=rounded

        sc_mgr [label="Scenario Manager\n\nnormal_ops\nweather_disruption_ord\nmaintenance_delay_sfo\ncrew_swap_ewr" fillcolor="#2a2a0d" shape=box fontcolor="#ffc107"]

        flights [label="FlightData\n7 flights/scenario\nstatus · delay · gate\ncrew · passengers" fillcolor="#121829" shape=box]
        crew [label="CrewMember\n~12/scenario\nduty hours · rest\nPart 117 state" fillcolor="#121829" shape=box]
        pax [label="Passenger\nMP status · connections\nspecial needs" fillcolor="#121829" shape=box]
        mel [label="MELItem\nsystem · restriction\nexpiry" fillcolor="#121829" shape=box]
        notes [label="Crew Notes\nfree text per flight" fillcolor="#121829" shape=box]
        rebook [label="RebookingCase\nurgency · next option" fillcolor="#121829" shape=box]
    }

    subgraph cluster_mcp {
        label="MCP Tools"
        color="#0066ff"
        fontcolor="#0066ff"

        t_weather [label="get_route_weather\nget_hub_forecasts" fillcolor="#0d1a33" shape=box]
        t_airport [label="get_airport_status\nget_airport_congestion" fillcolor="#0d1a33" shape=box]
        t_flight [label="get_flight_status\nget_flight_details\nget_irregular_ops" fillcolor="#0d1a33" shape=box]
        t_crew [label="get_crew_notes\nget_crew_duty_status" fillcolor="#0d1a33" shape=box]
        t_maint [label="get_maintenance_flags" fillcolor="#0d1a33" shape=box]
        t_pax [label="get_pending_rebookings" fillcolor="#0d1a33" shape=box]
    }

    subgraph cluster_output {
        label="Agent Output"
        color="#1e2a4a"
        fontcolor="#8892a8"

        notif [label="Passenger\nNotification" fillcolor="#1a3a1a" shape=box fontcolor="#00c853"]
        brief [label="Handover\nBrief" fillcolor="#3a1a0d" shape=box fontcolor="#ff3d00"]
    }

    // Real data flow
    openmeteo -> t_weather [color="#00c853" penwidth=2]
    faa -> t_airport [color="#00c853" penwidth=2]

    // Mock data flow
    sc_mgr -> flights [color="#ffc107"]
    sc_mgr -> crew [color="#ffc107"]
    sc_mgr -> pax [color="#ffc107"]
    sc_mgr -> mel [color="#ffc107"]
    sc_mgr -> notes [color="#ffc107"]
    sc_mgr -> rebook [color="#ffc107"]

    flights -> t_flight [color="#4a5568"]
    crew -> t_crew [color="#4a5568"]
    notes -> t_crew [color="#4a5568"]
    mel -> t_maint [color="#4a5568"]
    pax -> t_pax [color="#4a5568"]
    rebook -> t_pax [color="#4a5568"]

    // To agents
    t_weather -> notif [color="#0066ff"]
    t_airport -> notif [color="#0066ff"]
    t_flight -> notif [color="#0066ff"]
    t_crew -> notif [color="#0066ff" style=dashed]

    t_weather -> brief [color="#0066ff"]
    t_airport -> brief [color="#0066ff"]
    t_flight -> brief [color="#0066ff"]
    t_crew -> brief [color="#0066ff"]
    t_maint -> brief [color="#0066ff"]
    t_pax -> brief [color="#0066ff"]
}