/* Custom CSS for NYC Air Quality Dashboard */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
}

/* Add a loading indicator */
._dash-loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

._dash-loading::after {
    content: 'Loading NYC Air Quality Dashboard...';
    font-size: 24px;
    color: #2a4a7f;
}