body {
    margin: 0;
    background: #87ceeb;
    font-family: Arial;
}

#gameContainer {
    position: relative;
    width: 400px;
    margin: 40px auto;
}

#scoreHUD {
    position: absolute;
    top: 10px;
    left: 10px;
    display: flex;
    gap: 15px;
    background: rgba(255,255,255,0.7);
    padding: 6px 12px;
    border-radius: 6px;
}

#gameover {
    position: absolute;
    top: 200px;
    width: 100%;
    text-align: center;
    background: rgba(255,255,255,0.9);
    padding: 25px;
    border-radius: 10px;
}

.hidden {
    display: none;
}

button {
    margin-top: 10px;
    padding: 10px 22px;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-highscore {
    position: absolute;
    width: 200px;
    height: 50px;
    background-color: #007bff;
    color: #fff;
    font-weight: bold;
    font-size: 20px;
    border: none;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.2s, transform 0.1s;
}

.btn-highscore:hover {
    background-color: #0056b3;
}


.hidden {
    display: none;
}