body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #1a472a;
    font-family: 'Courier New', Courier, monospace;
    background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)),
        url('https://img.freepik.com/free-photo/tropical-green-leaves-background_53876-88891.jpg');
    background-size: cover;
    background-position: center;
}

.game-container {
    text-align: center;
    background-color: rgba(40, 100, 70, 0.9);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
    border: 3px solid #3d8b5f;
}

h1 {
    color: #9ee4c8;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.game-stats {
    color: #ecf0f1;
    font-size: 1.2em;
    margin-bottom: 10px;
}

#gameCanvas {
    background-color: rgba(26, 71, 42, 0.8);
    border: 4px solid #3d8b5f;
    border-radius: 10px;
}

.controls {
    margin-top: 20px;
}

#startBtn {
    background-color: #27ae60;
    color: white;
    border: none;
    padding: 10px 20px;
    font-size: 1.1em;
    border-radius: 5px;
    cursor: pointer;
    font-family: 'Courier New', Courier, monospace;
    transition: background-color 0.3s;
}

#startBtn:hover {
    background-color: #219a52;
}

.instructions {
    color: #bdc3c7;
    margin-top: 15px;
}

.speed-control {
    margin: 15px 0;
    color: #ecf0f1;
}

#speed {
    background-color: #2c3e50;
    color: #ecf0f1;
    border: 2px solid #95a5a6;
    padding: 5px;
    border-radius: 5px;
    cursor: pointer;
    font-family: 'Courier New', Courier, monospace;
}