.loading-spinner {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.7);
        z-index: 9999;
        display: none; /* Hidden by default */
        justify-content: center;
        align-items: center;
    }

    .spinner {
        border: 8px solid #f3f3f3;
        border-top: 8px solid #3498db; /* Color of the spinner */
        border-radius: 50%;
        width: 60px;
        height: 60px;
        animation: spin 2s linear infinite;
    }

    @keyframes spin {
        0% { transform: rotate(0deg); }
        100% { transform: rotate(360deg); }
    }