/* Кнопка "Вгору" */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    left: 20px;
    width: 44px;
    height: 44px;
    background: rgba(43, 110, 159, 0.85);
    backdrop-filter: blur(4px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 9999;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    border: 1px solid rgba(255,255,255,0.2);
}

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

.scroll-to-top:hover {
    background: rgba(43, 110, 159, 1);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.scroll-to-top svg {
    width: 22px;
    height: 22px;
    fill: white;
}

/* Мобільні пристрої */
@media (max-width: 768px) {
    .scroll-to-top {
        width: 38px;
        height: 38px;
        bottom: 20px;
        left: 15px;
    }
    .scroll-to-top svg {
        width: 18px;
        height: 18px;
    }
}