/* ============================================================
		   SNIPPET: MH — Breadcrumbs (MANUAL ONLY: shortcode + CSS) v2.0
		   PURPOSE
		   - Provides shortcode: 
		   - You place  manually where you want breadcrumbs to appear
		   - Styles breadcrumbs TOP LEFT
		   - Preserves language in crumb LINKS using ?lang=en|pt

		   IMPORTANT CHANGE
		   - NO auto-injection (no Astra hooks, no Elementor hooks, no the_content filters)
		   ============================================================ */

		if ( ! defined('ABSPATH') ) exit;

		/** Detect current language: 'en' or 'pt' (default 'en'). */
		function mh_breadcrumbs_get_lang() {
			if ( isset( $_GET['lang'] ) ) {
				$lang = strtolower( sanitize_text_field( $_GET['lang'] ) );
				if ( in_array( $lang, array( 'en', 'pt' ), true ) ) return $lang;
			}
			return 'en';
		}

		/** Add/overwrite ?lang=... in a URL. */
		function mh_breadcrumbs_url_with_lang( $url, $lang ) {
			return esc_url( add_query_arg( 'lang', $lang, $url ) );
		}

		function mh_get_breadcrumbs_html() {
			if ( is_front_page() ) return '';

			$lang     = mh_breadcrumbs_get_lang();
			$home_url = mh_breadcrumbs_url_with_lang( home_url( '/' ), $lang );

			$crumbs = array();
			$crumbs[] = array( 'Home', $home_url );

			if ( is_singular( 'page' ) ) {
				global $post;
				$ancestors = get_post_ancestors( $post );

				if ( ! empty( $ancestors ) ) {
					$ancestors = array_reverse( $ancestors );
					foreach ( $ancestors as $ancestor_id ) {
						$crumbs[] = array(
							get_the_title( $ancestor_id ),
							mh_breadcrumbs_url_with_lang( get_permalink( $ancestor_id ), $lang )
						);
					}
				}

				$crumbs[] = array( get_the_title(), null );
			}
			elseif ( is_singular( 'post' ) ) {
				$categories = get_the_category();
				if ( ! empty( $categories ) ) {
					$primary_cat = $categories[0];
					$crumbs[] = array(
						$primary_cat->name,
						mh_breadcrumbs_url_with_lang( get_category_link( $primary_cat->term_id ), $lang )
					);
				}
				$crumbs[] = array( get_the_title(), null );
			}
			elseif ( is_category() ) {
				$crumbs[] = array( single_cat_title( '', false ), null );
			}
			elseif ( is_tag() ) {
				$crumbs[] = array( single_tag_title( '', false ), null );
			}
			elseif ( is_search() ) {
				$crumbs[] = array( 'Search: ' . get_search_query(), null );
			}
			elseif ( is_404() ) {
				$crumbs[] = array( '404 – Page not found', null );
			}
			elseif ( is_archive() ) {
				$title = wp_strip_all_tags( get_the_archive_title() );
				$crumbs[] = array( $title, null );
			}

			$out  = '<nav class="mh-breadcrumbs" aria-label="Breadcrumb">';
			$out .= '<ol class="mh-breadcrumbs__list">';

			$total = count( $crumbs );
			foreach ( $crumbs as $i => $c ) {
				$label   = $c[0];
				$url     = $c[1];
				$is_last = ( $i === $total - 1 );

				$out .= '<li class="mh-breadcrumbs__item">';

				if ( ! $is_last && ! empty( $url ) ) {
					$out .= '<a class="mh-breadcrumbs__link" href="' . esc_url( $url ) . '">';
					$out .= esc_html( $label );
					$out .= '</a>';
				} else {
					$out .= '<span class="mh-breadcrumbs__current" aria-current="page">';
					$out .= esc_html( $label );
					$out .= '</span>';
				}

				if ( ! $is_last ) {
					$out .= '<span class="mh-breadcrumbs__sep" aria-hidden="true">&rsaquo;</span>';
				}

				$out .= '</li>';
			}

			$out .= '</ol></nav>';

			return $out;
		}

		function mh_breadcrumbs_shortcode() {
			return mh_get_breadcrumbs_html();
		}
		add_shortcode( 'mh_breadcrumbs', 'mh_breadcrumbs_shortcode' );

		function mh_breadcrumbs_inline_css() {
			if ( is_admin() ) return;

			echo "\n" . '<style id="mh-breadcrumbs-css-manual-only">
		.mh-breadcrumbs{
		  margin: 0.4rem 0 0.8rem;
		  display: flex;
		  justify-content: flex-start;
		}
		.mh-breadcrumbs__list{
		  list-style: none;
		  padding: 0;
		  margin: 0;
		  display: flex;
		  flex-wrap: wrap;
		  justify-content: flex-start;
		  align-items: baseline;
		  gap: 0.35rem;
		  font-size: 0.95rem;
		  line-height: 1.35;
		  color: var(--brand-blue, #005A9C);
		}
		.mh-breadcrumbs__item{ display: inline-flex; align-items: baseline; gap: 0.35rem; }
		.mh-breadcrumbs__link{
		  color: inherit;
		  text-decoration: none;
		  border-bottom: 1px dotted currentColor;
		  text-underline-offset: 2px;
		}
		.mh-breadcrumbs__link:hover,
		.mh-breadcrumbs__link:focus-visible{ border-bottom-style: solid; outline: none; }
		.mh-breadcrumbs__sep{ opacity: 0.6; }
		.mh-breadcrumbs__current{ font-weight: 700; color: var(--text-color, #333); }
		@media (max-width: 767px){
		  .mh-breadcrumbs__list{ font-size: 0.85rem; line-height: 1.25; }
		}
		</style>' . "\n";
		}
		add_action( 'wp_head', 'mh_breadcrumbs_inline_css', 30 );