Untitled

graph TD
    %% --- Style Definitions for Blueprint/HUD Theme (Light Background) ---
    classDef level1 fill:#111,stroke:#0D47A1,stroke-width:3px,color:#fff;
    classDef level2 fill:#0D47A1,stroke:#42A5F5,stroke-width:1px,color:#fff;
    classDef level3 fill:#E3F2FD,stroke:#42A5F5,stroke-width:1px,color:#000;
    linkStyle default stroke:#42A5F5,stroke-width:1px;

    %% --- Level 1 Node (Project Root) ---
    A("2.0 <br> Site Preparation & Enabling Works"):::level1

    %% --- Level 2 Nodes (Main Categories) ---
    B("2.1 <br> Site Survey & Soil Testing")
    C("2.2 <br> Demolition & Clearing")
    D("2.3 <br> Utility Relocation &<br>Temporary Facilities")
    E("2.4 <br> Site Safety Setup")
    F("2.5 <br> Environmental Protection")

    %% --- Connections from Level 1 to Level 2 ---
    A --> B & C & D & E & F
    
    %% --- Vertically Chained Level 3 Nodes (Work Packages) ---
    B --> B1("2.1.1 Topographic & boundary<br>land survey") --> B2("2.1.2 Soil sampling &<br>laboratory testing") --> B3("2.1.3 Geotechnical report<br>preparation") --> B4("2.1.4 Groundwater level assessment<br>& dewatering plan") --> B5("2.1.5 Utility mapping &<br>clash detection") --> B6("2.1.6 Stormwater/drainage<br>study") --> B7("2.1.7 Environmental baseline<br>(noise/dust) survey") --> B8("2.1.8 Archaeological/heritage<br>screening (if applicable)")

    C --> C1("2.2.1 Vegetation clearing &<br>tree protection plan") --> C2("2.2.2 Removal of debris &<br>unsuitable fill") --> C3("2.2.3 Relocation/demolition of<br>existing structures") --> C4("2.2.4 Hazardous materials survey<br>& safe disposal") --> C5("2.2.5 On-site waste segregation<br>& recycling") --> C6("2.2.6 Grading & leveling of<br>site platform") --> C7("2.2.7 Temporary access roads<br>preparation") --> C8("2.2.8 Erosion & sediment<br>control installation")

    D --> D1("2.3.1 Relocate/upgrade electrical<br>lines & substations") --> D2("2.3.2 Relocate water supply<br>& fire mains") --> D3("2.3.3 Temporary water &<br>power connections") --> D4("2.3.4 Site office & meeting<br>room setup") --> D5("2.3.5 Storage & worker<br>rest shelters") --> D6("2.3.6 Temporary fencing &<br>controlled access gates") --> D7("2.3.7 Temporary lighting & CCTV<br>for site security") --> D8("2.3.8 Wayfinding & delivery<br>logistics plan")

    E --> E1("2.4.1 Safety signage &<br>exclusion zones") --> E2("2.4.2 PPE policy enforcement<br>& distribution") --> E3("2.4.3 Fire extinguishers &<br>first-aid stations") --> E4("2.4.4 Emergency exits, alarms<br>& muster points") --> E5("2.4.5 Toolbox talks &<br>induction training") --> E6("2.4.6 Incident/near-miss<br>reporting procedure")

    F --> F1("2.5.1 Noise barriers &<br>monitoring") --> F2("2.5.2 Dust suppression<br>(water spraying)") --> F3("2.5.3 Wheel-wash point &<br>track-out control") --> F4("2.5.4 Wastewater/settlement tanks<br>& discharge control") --> F5("2.5.5 Soil erosion prevention<br>(silt fence, mulching)") --> F6("2.5.6 Spill response kit &<br>pollution prevention")
    
    %% --- Apply styles to all nodes ---
    class B,C,D,E,F level2;
    class B1,B2,B3,B4,B5,B6,B7,B8,C1,C2,C3,C4,C5,C6,C7,C8,D1,D2,D3,D4,D5,D6,D7,D8,E1,E2,E3,E4,E5,E6,F1,F2,F3,F4,F5,F6 level3;