/construction-billing
├── index.php                  # Application entry point
├── README.md                  # Project documentation
├── composer.json              # PHP dependencies
├── .htaccess                  # URL rewriting and security
├── config/                    # Configuration files
│   ├── config.php             # Main configuration
│   ├── database.php           # Database connection settings
│   └── routes.php             # Application routes
├── app/                       # Application core files
│   ├── bootstrap.php          # Application bootstrapper
│   ├── controllers/           # Controller classes
│   ├── models/                # Data models
│   ├── helpers/               # Helper functions
│   └── libraries/             # Custom libraries
├── public/                    # Publicly accessible files
│   ├── css/                   # CSS files
│   ├── js/                    # JavaScript files
│   ├── img/                   # Image files
│   └── uploads/               # User uploaded files
├── templates/                 # HTML templates
│   ├── partials/              # Reusable page components
│   ├── dashboard.html         # Main dashboard
│   ├── staff/                 # Staff management templates
│   ├── owners/                # Owner management templates
│   ├── general-conditions/    # General conditions templates
│   ├── gmp/                   # GMP management templates
│   ├── aia/                   # AIA document templates
│   └── settings/              # Application settings
└── database/                  # Database files and migrations