= get_post_meta( get_the_ID(), '_wp_page_template', true );
	$default_template          = get_theme_mod( 'pages_template', 'default' );
	$is_light_template         = ! empty( $page_template ) && strpos( $page_template, 'light' ) !== false;
	$is_light_default_template = is_page() && ( empty( $page_template ) || $page_template == 'default' ) && strpos( $default_template, 'light' ) !== false;
	$needs_dark_nav            = ( $is_light_template || $is_light_default_template ) && $position !== 'top';

	if ( $needs_dark_nav && get_theme_mod( 'header_color', 'light' ) !== 'dark' ) {
		$classes[] = 'nav-dark toggle-nav-dark';
	}

	if ( ! $classes) $classes[] = '';

	echo implode( ' ', $classes ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}

/**
 * Build Nav Classes.
 *
 * @param string $position Menu position.
 *
 * @return void
 */
function flatsome_nav_classes( $position ) {
	$classes[] = null;

	if ( $position == 'main' ) {
		if (get_theme_mod( 'nav_style' )) $classes[]   = 'nav-' . get_theme_mod( 'nav_style' );
		if (get_theme_mod( 'nav_size' )) $classes[]    = 'nav-size-' . get_theme_mod( 'nav_size' );
		if (get_theme_mod( 'nav_spacing' )) $classes[] = 'nav-spacing-' . get_theme_mod( 'nav_spacing' );
		if ( get_theme_mod( 'nav_uppercase', 1 ) ) {
			$classes[] = 'nav-uppercase';
		}
		if ( get_theme_mod( 'nav_body_overlay' ) ) $classes[] = 'nav-prompts-overlay';
	}

	if ( $position == 'bottom' ) {
		if (get_theme_mod( 'nav_style_bottom' )) $classes[]   = 'nav-' . get_theme_mod( 'nav_style_bottom' );
		if (get_theme_mod( 'nav_size_bottom' )) $classes[]    = 'nav-size-' . get_theme_mod( 'nav_size_bottom' );
		if (get_theme_mod( 'nav_spacing_bottom' )) $classes[] = 'nav-spacing-' . get_theme_mod( 'nav_spacing_bottom' );

		if ( get_theme_mod( 'nav_uppercase_bottom', 1 ) ) {
			$classes[] = 'nav-uppercase';
		}
		if ( get_theme_mod( 'nav_bottom_body_overlay' ) ) $classes[] = 'nav-prompts-overlay';
	}

	if ( $position == 'top' ) {
		$classes[] = 'nav-' . get_theme_mod( 'nav_style_top', 'divided' );
		if ( get_theme_mod( 'nav_top_body_overlay' ) ) $classes[] = 'nav-prompts-overlay';
		if ( get_theme_mod( 'nav_top_uppercase' ) ) $classes[] = 'nav-uppercase';
	}

	echo implode( ' ', $classes ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}

/**
 * Flatsome HTML classes.
 *
 * @return void
 */
function flatsome_html_classes() {

	// Change Body Layouts.
	$classes[] = 'loading-site no-js';

	// Add background style.
	if (get_theme_mod( 'body_bg_type' ) == 'bg-full-size') $classes[] = 'bg-fill';

	echo implode( ' ', $classes ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}

/**
 * Adds custom classes to the array of body classes.
 *
 * @param array $classes Current classes.
 *
 * @return array $classes
 */
function flatsome_body_classes( $classes ) {

	// Change Body Layouts.
	if (get_theme_mod( 'body_layout' ))  $classes[]                   = get_theme_mod( 'body_layout' );
	if (get_theme_mod( 'box_shadow_header' )) $classes[]              = 'header-shadow';
	if (get_theme_mod( 'body_bg_type' ) == 'bg-full-size') $classes[] = 'bg-fill';
	if (get_theme_mod( 'box_shadow' )) $classes[]                     = 'box-shadow';
	if (get_theme_mod( 'flatsome_lightbox', 1 )) $classes[]           = 'lightbox';
	if (get_theme_mod( 'dropdown_arrow', 1 )) $classes[]              = 'nav-dropdown-has-arrow';
	if (get_theme_mod( 'dropdown_shadow', 1 )) $classes[]             = 'nav-dropdown-has-shadow';
	if (get_theme_mod( 'dropdown_border_enabled', 1 )) $classes[]     = 'nav-dropdown-has-border';
	if (get_theme_mod( 'parallax_mobile', 0 )) $classes[]             = 'parallax-mobile';

	if (
		'center' != get_theme_mod( 'mobile_overlay' ) &&
		'slide' == get_theme_mod( 'mobile_submenu_effect' )
	) {
		$levels    = get_theme_mod( 'mobile_submenu_levels', '1' );
		$classes[] = 'mobile-submenu-slide';
		$classes[] = 'mobile-submenu-slide-levels-' . $levels;
	}

	if ( 'toggle' === get_theme_mod( 'mobile_submenu_parent_behavior' ) ) {
		$classes[] = 'mobile-submenu-toggle';
	}

	// Add the selected page template classes if Default Template is selected.
	$page_template    = get_post_meta( get_the_ID(), '_wp_page_template', true );
	$default_template = get_theme_mod( 'pages_template', 'default' );
	if ( is_page() && ( empty( $page_template ) || $page_template == 'default' ) && $default_template !== 'default' ) {
		$classes[] = 'page-template-' . $default_template;
		$classes[] = 'page-template-' . $default_template . '-php';
	}

	return $classes;
}
add_filter( 'body_class', 'flatsome_body_classes' );

/**
 * Flatsome Dropdown classes.
 *
 * @return void
 */
function flatsome_dropdown_classes() {
	$class_names = array();

	// Add Dropdown Styles.
	$class_names[] = 'nav-dropdown-' . get_theme_mod( 'dropdown_style', 'default' );
	if ( get_theme_mod( 'dropdown_text' ) == 'dark' ) { $class_names[] = 'dark'; }
	if ( get_theme_mod( 'dropdown_text_style' ) == 'uppercase' ) { $class_names[] = 'dropdown-uppercase'; }

	echo implode( ' ', $class_names ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}

/**
 * Add Header Backgrounds.
 *
 * @return void
 */
function flatsome_add_header_backgrounds() {
	$page_template = get_post_meta( get_the_ID(), '_wp_page_template', true );

	// Add BG image.
	echo '<div class="header-bg-image fill"></div>';

	// Add BG Color.
	echo '<div class="header-bg-color fill"></div>';

	// Add BG shade to transparent headers.
	if ( ! empty( $page_template ) && strpos( $page_template, 'transparent' ) && get_theme_mod( 'header_bg_transparent_shade' ) ) {
		echo '<div class="shade shade-top hide-for-sticky fill"></div>';
	}
}
add_action( 'flatsome_header_background', 'flatsome_add_header_backgrounds', 10 );

/**
 * Add js class to header if JS is enabled.
 *
 * @return void
 */
function flatsome_javascript_detection() {
	echo "<script>(function(html){html.className = html.className.replace(/\bno-js\b/,'js')})(document.documentElement);</script>\n";
}
add_action( 'wp_head', 'flatsome_javascript_detection', 0 );

/**
 * Insert custom header script.
 *
 * @return void
 */
function flatsome_custom_header_js() {
	if ( get_theme_mod( 'html_scripts_header' ) && ! is_admin() ) {
		echo get_theme_mod( 'html_scripts_header' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
	}
}
add_action( 'wp_head', 'flatsome_custom_header_js' );

/**
 * Insert custom body top script.
 *
 * @return void
 */
function flatsome_after_body_open() {
	if ( get_theme_mod( 'html_scripts_after_body' ) && ! is_admin() ) {
		echo get_theme_mod( 'html_scripts_after_body' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
	}
}
add_action( 'flatsome_after_body_open', 'flatsome_after_body_open' );

/**
 * Set logo position.
 *
 * @return void
 */
function flatsome_logo_position() {
	$classes   = array();
	$classes[] = 'logo-' . get_theme_mod( 'logo_position', 'left' );

	// Mobile logo position.
	if (get_theme_mod( 'logo_position_mobile', 'center' ) == 'center') $classes[] = 'medium-logo-center';

	echo implode( ' ', $classes ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}

/**
 * HTML after header.
 *
 * @return void
 */
function flatsome_html_after_header() {
	if ( get_theme_mod( 'html_after_header' ) ) {
		// AFTER HEADER HTML BLOCK.
		echo '<div class="header-block block-html-after-header z-1" style="position:relative;top:-1px;">';
		echo do_shortcode( get_theme_mod( 'html_after_header' ) );
		echo '</div>';
	}
}
add_action( 'flatsome_after_header', 'flatsome_html_after_header', 1 );

if ( get_theme_mod( 'site_loader' ) ) {
	/**
	 * Page loader.
	 *
	 * @return void
	 */
	function flatsome_add_page_loader() {
		if ( get_theme_mod( 'site_loader' ) == 'home' && is_front_page() ) {
			get_template_part( 'template-parts/header/page-loader' );
		} elseif ( get_theme_mod( 'site_loader' ) == 'all' ) {
			get_template_part( 'template-parts/header/page-loader' );
		}
	}
	add_action( 'flatsome_before_header', 'flatsome_add_page_loader', 1 );
}

if ( ! function_exists( 'wp_body_open' ) ) {
	/**
	 * Fire the wp_body_open action.
	 * Added for backwards compatibility to support pre 5.2.0 WordPress versions.
	 *
	 * @since 3.9.1
	 */
	function wp_body_open() {
		do_action( 'wp_body_open' );
	}
}

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<html lang="vi" class="