/* base style */
.scroll-to-top {
    --size: 60px;
    position: fixed;
    right: 18px;
    bottom: 24px;
    width: var(--size);
    height: var(--size);
    border: none;
    /* background: linear-gradient(180deg,#00295D,#0055AA); */
    background-color: #fff;
    color: #fff;
    display: inline-grid;
    place-items: center;
    cursor: pointer;
    opacity: 0;
    transform: translateY(12px) scale(0.95);
    pointer-events: none;
    transition: opacity 260ms ease, transform 260ms ease;
    z-index: 9999;
    padding: 0;
    border-radius: 16px;
    box-shadow: 0 3px 8px 0 rgba(0, 0, 0, 0.16);
}

.scroll-to-top svg path {
    fill: var(--text-color);
}

/* visible state */
.scroll-to-top.is-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

/* focus style for keyboard users */
.scroll-to-top:focus {
    outline: 3px solid rgba(0, 150, 255, 0.25);
    outline-offset: 4px;
}

/* smaller on mobile */
@media (max-width: 480px) {
    .scroll-to-top {
        right: 6px;
        bottom: 70px;
        --size: 40px;
        border-radius: 8px;
    }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
    .scroll-to-top {
        transition: none;
    }
}