body {
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: black;
    color: white;
    font-family: Arial, sans-serif;
}

h1 {
    margin: 20px 0;
    font-weight: bold;
}

#scoreboard {
    display: flex;
    justify-content: space-between;
    width: 100%;
    max-width: 400px;
    margin: 10px 0;
    font-size: 18px;
}

canvas {
    border: 2px solid #ccc;
    background-color: #333;
}

#gameOverScreen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.8);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#gameOverScreen.hidden {
    display: none;
}

#restartButton {
    margin-top: 10px;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    background: #666;
    color: white;
    border: none;
    border-radius: 5px;
}

#restartButton:hover {
    background: #888;
}