/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #05F5BD, #3df7ca);
    color: #ffffff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.15);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    pointer-events: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.back-to-top:hover {
    background: linear-gradient(135deg, #04d4a5, #05F5BD);
    transform: translateY(-5px);
    box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

/* Mobile Anpassungen */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 110px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}