/* Bottone */
#backToTop {
    position: fixed;
    bottom: 30px;
    right: 20px;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, .9);
    display: none;
    align-items: center;
    justify-content: center;
    border: 1px solid white;
    box-shadow: 2px 2px 4px rgba(0, 0, 0, .24);
    overflow: hidden;
    transition: all 0.3s ease;
}

/* SVG */
#backToTop svg {
    width: 40px;
    height: 40px;
}

/* Path freccia - stato normale */
#backToTop path {
    fill: #000; /* freccia nera */
}

/* Hover */
#backToTop:hover path {
    fill: #FFDD23; /* diventa gialla */
}