/* Spinner overlay - ocupa toda a tela */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.spinner-container {
    text-align: center;
    color: white;
}

.spinner-overlay.hidden {
    opacity: 0;
    pointer-events: none; /* impede cliques enquanto oculto */
}