/* Spinner simple */
#spinner-overlay {
    display: none; /* Oculto por defecto */
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.7);
    z-index: 9999;
    justify-content: center;
    align-items: center;
}
.spinner {
    border: 8px solid #f3f3f3;
    border-top: 8px solid #198754;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
}
.spinner-content {
   display: flex; flex-direction: column; align-items: center;
}
.spinner-texto {
   margin-bottom: 16px;
}   
@keyframes spin {
    0% { transform: rotate(0deg);}
    100% { transform: rotate(360deg);}
}