/* ✅ Page Loading Overlay (shown during postbacks) */
#pageLoadingOverlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 99999;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(2px);
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

    #pageLoadingOverlay.active {
        display: flex;
    }

.page-loading-spinner {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: 5px solid rgba(0, 51, 102, 0.15);
    border-top-color: #003366;
    animation: pageLoadingSpin 0.8s linear infinite;
}

.page-loading-text {
    margin-top: 16px;
    font-weight: 600;
    color: #003366;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

@keyframes pageLoadingSpin {
    to {
        transform: rotate(360deg);
    }
}