/* Scroll to top button */
.scroll-to-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 40px;
    height: 40px;
    background-color: rgba(8, 38, 239, 0.8);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    text-decoration: none; /* Убираем подчеркивание */
}

.scroll-to-top-btn.visible {
    opacity: 1;
}

.scroll-to-top-btn:hover {
    background-color: rgba(8, 38, 239, 1);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(8, 38, 239, 0.7);
    }
    70% {
        transform: scale(1.1);
        box-shadow: 0 0 10px 20px rgba(8, 38, 239, 0);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(8, 38, 239, 0);
    }
}

.scroll-to-top-btn i {
    font-size: 20px;
}

@media (max-width: 768px) {
    .scroll-to-top-btn {
        bottom: 20px;
        right: 20px;
        width: 35px;
        height: 35px;
    }
}