// Caixa de autor no final (protegida contra auto-links)
add_filter( 'the_content', function( $content ) {
    if ( ! ( is_singular( 'post' ) && in_the_loop() && is_main_query() ) ) return $content;

    $author_id = get_the_author_meta( 'ID' );
    $author_name = get_the_author();
    $author_url = get_author_posts_url( $author_id );
    $author_bio = get_the_author_meta( 'description' );

    $custom_id = get_user_meta( $author_id, 'odisseia_author_avatar_id', true );
    if ( $custom_id ) {
        $avatar = '<img src="' . esc_url( wp_get_attachment_url( $custom_id ) ) . '" class="odisseia-author-img" alt="' . esc_attr( $author_name ) . '" />';
    } else {
        $avatar = get_avatar( $author_id, 64, '', $author_name, array( 'class' => 'odisseia-author-img' ) );
    }

    $box = '<div class="odisseia-author-box" style="clear:both;display:flex;align-items:center;margin:30px 0 20px 0;padding:18px;background:#f9f9f9;border-left:4px solid #e53935;border-radius:4px;font-family:inherit;">';
    $box .= '<div style="flex-shrink:0;margin-right:15px;">' . $avatar . '</div>';
    $box .= '<div style="width:100%;">';
    $box .= '<span style="font-size:11px;color:#666;text-transform:uppercase;letter-spacing:0.5px;display:block;margin-bottom:2px;font-weight:600;">Sobre o autor</span>';
    $box .= '<h4 style="margin:0 0 6px 0;font-size:16px;"><a href="' . esc_url( $author_url ) . '" style="color:#111;text-decoration:none;font-weight:bold;">' . esc_html( $author_name ) . '</a></h4>';
    if ( ! empty( $author_bio ) ) {
        $box .= '<div style="margin:0;font-size:13px;color:#555;line-height:1.45;">' . esc_html( $author_bio ) . '</div>';
    }
    $box .= '</div>';
    $box .= '</div>';
    $box .= '<style>.odisseia-author-img{border-radius:50%!important;width:54px!important;height:54px!important;object-fit:cover!important;min-width:54px!important;}</style>';

    return $content . $box;
}, 99999 );