/* Back to Top Button Styles */
.back-to-top {
    position: fixed;
    bottom: 160px;
    right: 30px;
    background: var(--verde-cafe);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    z-index: 999;
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    border: 2px solid white;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--naranja-brillante);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 150px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
    }
}