body {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: linear-gradient(to bottom, #87CEEB, #4682B4);
    font-family: 'Arial', sans-serif;
    overflow: hidden;
}

#gameCanvas {
    background: #70C5CE;
    border: 3px solid #000;
    border-radius: 5px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
}

#startScreen, #gameOverScreen {
    position: absolute;
    background: rgba(255, 255, 255, 0.9);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

#startScreen {
    display: block;
}

#gameOverScreen {
    display: none;
}

button {
    padding: 12px 24px;
    font-size: 16px;
    cursor: pointer;
    margin: 8px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #45a049;
    transform: scale(1.05);
}

#pointsDisplay {
    margin-top: 15px;
    font-weight: bold;
    color: #333;
}

h1 {
    color: #333;
    margin-top: 0;
}