/* Кнопка возврата наверх */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(167, 139, 250, 0.9), rgba(139, 92, 246, 0.9));
    border: 2px solid rgba(167, 139, 250, 0.5);
    border-radius: 50%;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

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

.scroll-to-top.inactive {
    opacity: 0.2;
}

.scroll-to-top:hover {
    background: linear-gradient(135deg, rgba(167, 139, 250, 1), rgba(139, 92, 246, 1));
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.5);
    opacity: 1 !important;
}

.scroll-to-top:active {
    transform: translateY(-1px);
}

@media (max-width: 768px) {
    .scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}