class-sassy-social-share-public.php.diff

diff --git a/public/class-sassy-social-share-public.php b/public/class-sassy-social-share-public.php
index f22bf00..25ce282 100644
--- a/public/class-sassy-social-share-public.php
+++ b/public/class-sassy-social-share-public.php
@@ -85,17 +85,13 @@ class Sassy_Social_Share_Public {
 		// stylesheet files for front-end of website
 		add_action( 'wp_enqueue_scripts', array( $this, 'frontend_css' ) );
 
-		if ( isset( $this->options['amp_enable'] ) ) {
-			$amp_options = array();
-			if ( class_exists( 'AMP_Options_Manager' ) && null !== AMP_Options_Manager::OPTION_NAME ) {
-				$amp_options = get_option( AMP_Options_Manager::OPTION_NAME );
-				if ( isset( $amp_options['theme_support'] ) && ( $amp_options['theme_support'] == 'paired' || $amp_options['theme_support'] == 'native' ) ) {
-					add_action( 'wp_print_styles', array( $this, 'frontend_amp_css' ) );
-				} else {
-					// stylesheet files for AMP pages
-					add_action( 'amp_post_template_css', array( $this, 'frontend_amp_css' ) );
-				}
-			}
+		if ( isset( $this->options['amp_enable'] ) && function_exists( 'is_amp_endpoint' ) ) {
+
+			// Standard and Transitional modes.
+			add_action( 'wp_print_styles', array( $this, 'frontend_amp_css' ) );
+
+			//  Reader mode.
+			add_action( 'amp_post_template_css', array( $this, 'frontend_amp_css' ) );
 		}
 
 	}
@@ -2046,6 +2042,9 @@ class Sassy_Social_Share_Public {
 	 * @since    2.0
 	 */
 	public function frontend_amp_css() {
+		if ( ! is_amp_endpoint() ) {
+			return;
+		}
 
 		$css = '';