/* ============================================================
   SPINNER — Overlay de carga a pantalla completa
   ============================================================ */

.spinner-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 99999;
}

.spinner-overlay.active { display: flex; }

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(37, 99, 235, 0.2);
    border-top-color: #2563eb;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}