/* ===== SCROLL TO TOP BUTTON ===== */
.scroll-top {
    position: fixed;
    bottom: 5.5rem;
    right: 1.5rem;
    z-index: 900;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--navy);
    border: 1.5px solid rgba(255, 255, 255, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity 0.25s ease,
                transform 0.25s cubic-bezier(0.4, 0, 0.2, 1),
                background 0.2s ease,
                box-shadow 0.2s ease;
    box-shadow: 0 4px 16px rgba(28, 43, 26, 0.3);
}

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

.scroll-top:hover {
    background: var(--teal);
    box-shadow: 0 6px 20px rgba(134, 179, 122, 0.4);
    transform: translateY(-2px);
}

.scroll-top:focus-visible {
    outline: 3px solid var(--teal);
    outline-offset: 3px;
}

.scroll-top svg {
    width: 18px;
    height: 18px;
    stroke: var(--white);
}

@media (prefers-reduced-motion: reduce) {
    .scroll-top {
        transition: opacity 0.01ms;
    }
}