fictioneer/partials/_navigation.php

<?php
/**
 * Partial: Navigation
 *
 * Renders the main navigation bar.
 *
 * @package WordPress
 * @subpackage Fictioneer
 * @since 5.0
 *
 * @internal $args['post_id']           Optional. Current post ID.
 * @internal $args['story_id']          Optional. Current story ID (if chapter).
 * @internal $args['header_image_url']  URL of the filtered header image or false.
 * @internal $args['header_args']       Arguments passed to the header.php partial.
 */
?>

<?php

// No direct access!
defined( 'ABSPATH' ) OR exit;

?>

<nav id="full-navigation" class="main-navigation" aria-label="Main Navigation">
  <div id="nav-observer-sticky" class="observer nav-observer"></div>
  <div class="main-navigation__background"></div>

  <?php do_action( 'fictioneer_navigation_top', $args ); ?>

  <div class="main-navigation__wrapper">
    <div class="main-navigation__left">
      <?php
        $menu = get_transient( 'fictioneer_main_nav_menu' );

        if ( empty( $menu ) ) {
          $menu = wp_nav_menu(
            array(
              'theme_location' => 'nav_menu',
              'menu_class' => 'main-navigation__list',
              'container' => '',
              'items_wrap' => '<ul id="%1$s" class="%2$s">%3$s</ul>',
              'echo' => false
            )
          );

          $menu = str_replace( 'class="', 'data-menu-id="main" class="', $menu );
          $menu = str_replace( 'current_page_item', '', $menu );
          $menu = str_replace( 'current-menu-item', '', $menu );
          $menu = str_replace( 'aria-current="page"', '', $menu );

          set_transient( 'fictioneer_main_nav_menu', $menu );
        }

        echo $menu;
      ?>
    </div>
    <div class="main-navigation__right">
      <?php get_template_part( 'partials/_icon-menu', null, array( 'location' => 'in-navigation' ) ); ?>
      <label for="mobile-menu-toggle" class="mobile-menu-button follows-alert-number">
        <?php fictioneer_icon( 'fa-bars', 'off' ); ?>
        <?php fictioneer_icon( 'fa-xmark', 'on' ); ?>
      </label>
    </div>
  </div>

  <?php do_action( 'fictioneer_navigation_bottom', $args ); ?>
</nav>