mbined_fonts() {
		$api_v1_fonts = [];
		$api_v2_fonts = [];

		foreach ( $this->fonts as $font ) {
			if ( $font->get_api_version() === Google_Font::API_V2 ) {
				$api_v2_fonts = array_merge( $api_v2_fonts, $font->get_families() );
			} else {
				$api_v1_fonts = array_merge( $api_v1_fonts, $font->get_families() );
			}
		}

		$combined_urls = [];

		if ( ! empty( $api_v1_fonts ) ) {
			$combined_urls[] = add_query_arg(
				[
					'family'  => implode( '|', $api_v1_fonts ),
					'display' => 'swap',
				],
				'https://fonts.googleapis.com/css'
			);
		}

		if ( ! empty( $api_v2_fonts ) ) {
			$combined_urls[] = 'https://fonts.googleapis.com/css2?family=' . implode( '&family=', $api_v2_fonts ) . '&display=swap';
		}

		return $combined_urls;
	}

	/**
	 * Convert Google Fonts URLs to local URLs
	 *
	 * @param string $src Style source URL
	 * @param string $handle Style handle
	 * @return string
	 */
	public function load_google_fonts_locally( $src, $handle ) {
		if ( ! Google_Font::is_google_font_url( $src ) ) {

			return $src;
		}

		if ( ! $this->can_load_locally() ) {
			return $src;
		}

		return wptt_get_webfont_url( $src );
	}

	/**
	 * Process fonts for local loading when not using optimization
	 *
	 * This method only runs when optimization is disabled.
	 * When optimization is enabled, output_optimized_fonts() handles everything.
	 *
	 * @return void
	 */
	public function process_local_fonts() {
		if ( $this->optimize ) {
			return;
		}

		if ( ! $this->can_load_locally() ) {
			return;
		}

		global $wp_styles;

		if ( ! is_object( $wp_styles ) ) {
			return;
		}

		foreach ( $wp_styles->registered as $handle => $style ) {
			if ( ! Google_Font::is_google_font_url( $style->src ) ) {
				continue;
			}

			// Handle protocol-relative URLs.
			if ( strpos( $style->src, '//' ) === 0 ) {
				$style->src = 'https:' . $style->src;
			}

			$wp_styles->registered[ $handle ]->src = wptt_get_webfont_url( $style->src );
		}
	}


	/**
	 * Check if WPTT WebFont Loader is available
	 *
	 * @return bool
	 */
	private function can_load_locally() {
		return function_exists( 'wptt_get_webfont_url' );
	}

	/**
	 * Setup filters for WebFontLoader.
	 *
	 * @return void
	 */
	private function setup_wptt_filters() {
		// Set custom font storage path
		add_filter(
			'wptt_get_local_fonts_base_path',
			function ( $path ) {
				return Helpers::get_plugin_content_dir();
			}
		);

		// Set custom font storage URL
		add_filter(
			'wptt_get_local_fonts_base_url',
			function ( $url ) {
				return Helpers::get_plugin_content_dir_url();
			}
		);

		// Set custom subfolder name
		add_filter(
			'wptt_get_local_fonts_subfolder_name',
			function ( $subfolder_name ) {
				return 'fonts';
			}
		);
	}

	/**
	 * Load WPTT_WebFont_Loader.
	 *
	 * @return void
	 */
	private function load_webfont_loader() {
		if ( class_exists( 'WPTT_WebFont_Loader' ) ) {
			return;
		}

		require_once SWCFPC_PLUGIN_PATH . 'vendor/wptt/webfont-loader/wptt-webfont-loader.php';
	}
}