.loading-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 9999;
    justify-content: center;
    align-items: center;
}

.loading-overlay.show {
    display: flex;
}

.loading-box {
    background: white;
    padding: 24px 40px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    color: rgba(0, 136, 255, 1);
    display: flex;
    align-items: center;
    gap: 12px;
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 136, 255, 0.2);
    border-top-color: rgba(0, 136, 255, 1);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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