{
    "difficulty_levels": {
        "easy": {
            "grid_size": 5,
            "num_clues": 12
        },
        "medium": {
            "grid_size": 7,
            "num_clues": 18
        },
        "hard": {
            "grid_size": 10,
            "num_clues": 25
        }
    },
    "ui_settings": {
        "cell_size": 60,
        "line_width": 3,
        "colors": {
            "background": "#FFFFFF",
            "grid": "#000000",
            "clues": "#0000FF",
            "lines": "#FF0000",
            "completed": "#00FF00"
        }
    },
    "game_settings": {
        "default_difficulty": "medium",
        "show_timer": true,
        "highlight_errors": true
    }
}