.scroll-to-top {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: var(--color-primary-lighter);
    color: var(--color-primary);
    cursor: pointer;
    z-index: 80;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease, background-color 0.15s ease;
}

.scroll-to-top:hover {
    background: var(--color-primary-light);
}

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

@media (max-width: 991px) {
    .scroll-to-top {
        right: 16px;
        bottom: 16px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .scroll-to-top {
        transition: opacity 0.01ms, visibility 0.01ms;
        transform: none;
    }
}