/* Back to top button styling */
.back-to-top {
    position: fixed;
    right: 25px;
    bottom: -60px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 22px;
    cursor: pointer;
    z-index: 99;
    transition: all 0.5s ease;
    opacity: 0;
}

.back-to-top.visible {
    bottom: 25px;
    opacity: 1;
}

.back-to-top:hover {
    background-color: #0056b3;
    transform: translateY(-5px);
}

@media (max-width: 768px) {
    .back-to-top {
        width: 40px;
        height: 40px;
        right: 15px;
        font-size: 18px;
    }
    
    .back-to-top.visible {
        bottom: 15px;
    }
}