/* Кнопка «Наверх»: левый нижний угол, поверх контента, ниже баннера cookies */
.dh-scroll-to-top {
    position: fixed;
    z-index: 10040;
    left: max(16px, env(safe-area-inset-left, 0px));
    bottom: calc(max(20px, env(safe-area-inset-bottom, 0px)) + var(--dh-cookie-offset, 0px));
    width: 46px;
    height: 46px;
    padding: 0;
    margin: 0;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background: rgba(121, 185, 208, 0.96);
    color: white;
    box-shadow: 0 4px 18px rgba(39, 106, 130, 0.28);
    opacity: 0;
    visibility: hidden;
    transform: translateY(14px) scale(0.94);
    transition:
        opacity 0.28s ease,
        transform 0.28s ease,
        visibility 0.28s ease,
        background 0.2s ease,
        box-shadow 0.2s ease,
        color 0.2s ease;
    pointer-events: none;
    -webkit-tap-highlight-color: transparent;
}

.dh-scroll-to-top:focus {
    outline: 2px solid rgba(39, 106, 130, 0.55);
    outline-offset: 2px;
}

.dh-scroll-to-top:focus:not(:focus-visible) {
    outline: none;
}

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

@media (hover: hover) {
    .dh-scroll-to-top--visible:hover {
        background: rgba(100, 168, 192, 1);
        color: #0f0f0f;
        box-shadow: 0 8px 24px rgba(39, 106, 130, 0.38);
        transform: translateY(-2px) scale(1.04);
    }
}

.dh-scroll-to-top:active {
    transform: translateY(0) scale(0.98);
}

.dh-scroll-to-top svg {
    display: block;
    width: 22px;
    height: 22px;
}

@media (max-width: 575px) {
    .dh-scroll-to-top {
        width: 44px;
        height: 44px;
        left: max(12px, env(safe-area-inset-left, 0px));
        bottom: calc(max(16px, env(safe-area-inset-bottom, 0px)) + var(--dh-cookie-offset, 0px));
    }

    .dh-scroll-to-top svg {
        width: 20px;
        height: 20px;
    }
}