public function output_custom_styles() {
    $header_bg_color = get_theme_mod('lhhfc_header_bg_color', '#ffffff');
    $header_text_color = get_theme_mod('lhhfc_header_text_color', '#000000');
    $header_icon_color = get_theme_mod('lhhfc_header_icon_color', '#000000');
    $header_menu_padding = get_theme_mod('lhhfc_header_menu_padding', '10');
    $header_logo_size = get_theme_mod('lhhfc_header_logo_size', '100');
    $footer_bg_color = get_theme_mod('lhhfc_footer_bg_color', '#ffffff');
    $footer_text_color = get_theme_mod('lhhfc_footer_text_color', '#000000');
    $footer_widget_columns = get_theme_mod('lhhfc_footer_widget_columns', '3');

    $custom_css = "
        /* Header styles */
        .site-header:not(.wp-block-template-part) .header-navbar {
            background-color: {$header_bg_color};
        }
        .site-header:not(.wp-block-template-part) .site-title a,
        .site-header:not(.wp-block-template-part) .site-description,
        .site-header:not(.wp-block-template-part) .header-navbar__menu > ul > li > a,
        .site-header:not(.wp-block-template-part) .header-navbar__actions > ul > li > a,
        .site-header:not(.wp-block-template-part) .header-navbar__toggle {
            color: {$header_text_color};
        }
        .site-header:not(.wp-block-template-part) .header-navbar__actions > ul > li > a svg,
        .site-header:not(.wp-block-template-part) .header-navbar__toggle svg,
        .site-header:not(.wp-block-template-part) .header-navbar__toggle .burger-icon {
            fill: {$header_icon_color};
            stroke: {$header_icon_color};
        }
        .site-header:not(.wp-block-template-part) .header-navbar__menu > ul > li > a {
            padding: {$header_menu_padding}px;
        }
        .site-header:not(.wp-block-template-part) .custom-logo {
            max-width: {$header_logo_size}%;
            height: auto;
        }
        
        /* Footer styles */
        .site-footer:not(.wp-block-template-part) {
            background-color: {$footer_bg_color};
        }
        .site-footer:not(.wp-block-template-part),
        .site-footer:not(.wp-block-template-part) a,
        .site-footer:not(.wp-block-template-part) .widget-title {
            color: {$footer_text_color};
        }
        .site-footer:not(.wp-block-template-part) .footer-widgets {
            display: grid;
            grid-template-columns: repeat({$footer_widget_columns}, 1fr);
            gap: 30px;
        }
        .site-footer:not(.wp-block-template-part) .footer-navbar {
            display: flex;
            justify-content: center;
            order: -1;
        }
        .site-footer:not(.wp-block-template-part) .footer-navbar__menu {
            text-align: center;
        }
        .site-footer:not(.wp-block-template-part) .footer-navbar__menu ul {
            padding: 0;
            margin: 0;
            list-style: none;
        }
        .site-footer:not(.wp-block-template-part) .footer-navbar__menu li {
            display: inline-block;
            margin: 0 10px;
        }
        
        /* Responsive styles */
        @media (max-width: 768px) {
            .site-footer:not(.wp-block-template-part) .footer-widgets {
                grid-template-columns: 1fr;
            }
        }
    ";

    echo '<style type="text/css">' . $custom_css . '</style>';
}<br />
<b>Fatal error</b>:  Uncaught Error: Class &quot;LHHFC_Customizer&quot; not found in /home/xs121763/jwa.bz/public_html/jsup/wp-content/plugins/listinghive-header-footer-customizer 2/listinghive-header-footer-customizer.php:29
Stack trace:
#0 /home/xs121763/jwa.bz/public_html/jsup/wp-includes/class-wp-hook.php(324): lhhfc_init('')
#1 /home/xs121763/jwa.bz/public_html/jsup/wp-includes/class-wp-hook.php(348): WP_Hook-&gt;apply_filters(NULL, Array)
#2 /home/xs121763/jwa.bz/public_html/jsup/wp-includes/plugin.php(517): WP_Hook-&gt;do_action(Array)
#3 /home/xs121763/jwa.bz/public_html/jsup/wp-settings.php(555): do_action('plugins_loaded')
#4 /home/xs121763/jwa.bz/public_html/jsup/wp-config.php(98): require_once('/home/xs121763/...')
#5 /home/xs121763/jwa.bz/public_html/jsup/wp-load.php(50): require_once('/home/xs121763/...')
#6 /home/xs121763/jwa.bz/public_html/jsup/wp-blog-header.php(13): require_once('/home/xs121763/...')
#7 /home/xs121763/jwa.bz/public_html/jsup/index.php(17): require('/home/xs121763/...')
#8 {main}
  thrown in <b>/home/xs121763/jwa.bz/public_html/jsup/wp-content/plugins/listinghive-header-footer-customizer 2/listinghive-header-footer-customizer.php</b> on line <b>29</b><br />