/* Return to Top Button */
.return-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: #00bfff;
    border: none;
    border-radius: 50%;
    color: #1a1a1a;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(0,0,0,0.45);
    transition: all 0.3s ease;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.return-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.return-to-top:hover {
    background: #33ccff;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0, 191, 255, 0.4);
}

.return-to-top:active {
    transform: translateY(0);
}

.arrow-up {
    display: block;
    line-height: 1;
}