/* Estilos del botón de scroll */
#btnScrollTop {
    position: fixed;
    bottom: 40px;
    right: 40px;
    z-index: 99;
    border: none;
    outline: none;
    background-color: #10b981;
    color: white;
    cursor: pointer;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background-color 0.2s ease;
}
#btnScrollTop.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#btnScrollTop:hover {
    background-color: #10b981;
}