.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}
.modal-overlay.is-visible {
    display: flex;
}
.modal {
    background: var(--brand-background);
    padding: 1.5rem;
    border-radius: 6px;
    text-align: center;
    max-width: 320px;
    width: 90%;
}