/* Overlay mobile — adicionado via JS */
.menu-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.35);
    z-index: 9997;
    backdrop-filter: blur(2px);
}

.menu-overlay.is-visible {
    display: block;
}

/* Header com sombra ao rolar */
.site-header.is-scrolled {
    box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}

/* Skip link acessibilidade */
.skip-link {
    position: absolute;
    top: -999px;
    left: -999px;
}
.skip-link:focus {
    top: 8px;
    left: 8px;
    z-index: 99999;
    background: var(--accent-dark);
    color: var(--perola);
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 13px;
}