diff --git a/Minecraft-Modern-Theme/single.php b/Minecraft-Modern-Theme/single.php
index aef3f81..ba861dc 100644
--- a/Minecraft-Modern-Theme/single.php
+++ b/Minecraft-Modern-Theme/single.php
@@ -1,19 +1,179 @@
 <?php get_header(); ?>
 
+<?php
+// Sidebar-Einstellungen aus dem Customizer
+$sidebar_enabled  = get_theme_mod( 'single_sidebar_enabled', true );
+$sidebar_position = get_theme_mod( 'single_sidebar_position', 'right' );
+$has_sidebar      = $sidebar_enabled && is_active_sidebar( 'single-post-sidebar' );
+
+$layout_class = $has_sidebar
+    ? 'single-layout with-sidebar sidebar-' . esc_attr( $sidebar_position )
+    : 'single-layout';
+?>
+
 <main id="primary" class="site-main">
     <div class="container">
-        <div class="content-area">
-            <?php while ( have_posts() ) : the_post(); ?>
-                <article id="post-<?php the_ID(); ?>" <?php post_class('post'); ?>>
-                    <div class="post-content">
-                        <h1 class="post-title"><?php the_title(); ?></h1>
-                        <div class="post-entry">
-                            <?php the_content(); ?>
-                        </div>
-                    </div>
-                </article>
-            <?php endwhile; ?>
-        </div>
+        <div class="<?php echo esc_attr( $layout_class ); ?>">
+
+            <?php if ( $has_sidebar && $sidebar_position === 'left' ) : ?>
+                <aside class="single-sidebar">
+                    <?php minecraft_modern_render_single_sidebar(); ?>
+                </aside>
+            <?php endif; ?>
+
+            <div class="single-main-content">
+                <?php while ( have_posts() ) : the_post(); ?>
+
+                    <article id="post-<?php the_ID(); ?>" <?php post_class('post single-post'); ?>>
+
+                        <?php if ( has_post_thumbnail() ) : ?>
+                            <div class="post-hero-image">
+                                <?php the_post_thumbnail( 'large' ); ?>
+                            </div>
+                        <?php endif; ?>
+
+                        <div class="post-content">
+
+                            <?php if ( get_theme_mod( 'single_show_breadcrumb', true ) ) : ?>
+                        <nav class="breadcrumb" aria-label="Breadcrumb">
+                                <a href="<?php echo esc_url( home_url('/') ); ?>"><?php _e('Startseite', 'minecraft-modern-theme'); ?></a>
+                                <span class="breadcrumb-sep"><i class="fas fa-chevron-right"></i></span>
+                                <?php
+                                $cats = get_the_category();
+                                if ( $cats ) :
+                                    $cat = $cats[0];
+                                ?>
+                                    <a href="<?php echo esc_url( get_category_link( $cat->term_id ) ); ?>"><?php echo esc_html( $cat->name ); ?></a>
+                                    <span class="breadcrumb-sep"><i class="fas fa-chevron-right"></i></span>
+                                <?php endif; ?>
+                                <span class="breadcrumb-current"><?php the_title(); ?></span>
+                            </nav>
+                        <?php endif; ?>
+
+                            <h1 class="post-title"><?php the_title(); ?></h1>
+
+                            <div class="post-meta">
+                                <span class="post-meta-item post-author">
+                                    <?php echo get_avatar( get_the_author_meta('ID'), 24, '', '', array('class' => 'author-avatar') ); ?>
+                                    <a href="<?php echo esc_url( get_author_posts_url( get_the_author_meta('ID') ) ); ?>"><?php the_author(); ?></a>
+                                </span>
+                                <span class="post-meta-item post-date">
+                                    <i class="fas fa-calendar-alt"></i>
+                                    <time datetime="<?php echo esc_attr( get_the_date('c') ); ?>"><?php echo esc_html( get_the_date() ); ?></time>
+                                </span>
+                                <?php if ( get_the_modified_date() !== get_the_date() ) : ?>
+                                    <span class="post-meta-item post-updated">
+                                        <i class="fas fa-pencil-alt"></i>
+                                        <?php printf( __('Aktualisiert: %s', 'minecraft-modern-theme'), '<time datetime="' . esc_attr( get_the_modified_date('c') ) . '">' . esc_html( get_the_modified_date() ) . '</time>' ); ?>
+                                    </span>
+                                <?php endif; ?>
+                                <?php
+                                $content    = get_post_field( 'post_content', get_the_ID() );
+                                $word_count = str_word_count( strip_tags( $content ) );
+                                $read_time  = max( 1, ceil( $word_count / 200 ) );
+                                ?>
+                                <span class="post-meta-item post-read-time">
+                                    <i class="fas fa-clock"></i>
+                                    <?php printf( _n('%d Min. Lesezeit', '%d Min. Lesezeit', $read_time, 'minecraft-modern-theme'), $read_time ); ?>
+                                </span>
+                                <?php if ( comments_open() ) : ?>
+                                    <span class="post-meta-item post-comments">
+                                        <i class="fas fa-comment"></i>
+                                        <a href="#comments"><?php comments_number( __('0 Kommentare', 'minecraft-modern-theme'), __('1 Kommentar', 'minecraft-modern-theme'), __('% Kommentare', 'minecraft-modern-theme') ); ?></a>
+                                    </span>
+                                <?php endif; ?>
+                            </div>
+
+                            <?php $cats = get_the_category(); if ( $cats ) : ?>
+                                <div class="post-categories-top">
+                                    <?php foreach ( $cats as $cat ) : ?>
+                                        <a href="<?php echo esc_url( get_category_link( $cat->term_id ) ); ?>" class="post-category-badge"><?php echo esc_html( $cat->name ); ?></a>
+                                    <?php endforeach; ?>
+                                </div>
+                            <?php endif; ?>
+
+                            <div class="post-entry">
+                                <?php the_content(); ?>
+                            </div>
+
+                            <footer class="post-footer">
+                                <?php $tags = get_the_tags(); if ( $tags ) : ?>
+                                    <div class="post-tags">
+                                        <i class="fas fa-tags"></i>
+                                        <?php foreach ( $tags as $tag ) : ?>
+                                            <a href="<?php echo esc_url( get_tag_link( $tag->term_id ) ); ?>" class="post-tag">#<?php echo esc_html( $tag->name ); ?></a>
+                                        <?php endforeach; ?>
+                                    </div>
+                                <?php endif; ?>
+
+                                <nav class="post-navigation" aria-label="<?php esc_attr_e('Beitrag Navigation', 'minecraft-modern-theme'); ?>">
+                                    <?php $prev_post = get_previous_post(); $next_post = get_next_post(); ?>
+                                    <?php if ( $prev_post ) : ?>
+                                        <a href="<?php echo esc_url( get_permalink( $prev_post->ID ) ); ?>" class="post-nav-link post-nav-prev">
+                                            <span class="post-nav-label"><i class="fas fa-arrow-left"></i> <?php _e('Vorheriger Beitrag', 'minecraft-modern-theme'); ?></span>
+                                            <span class="post-nav-title"><?php echo esc_html( get_the_title( $prev_post->ID ) ); ?></span>
+                                        </a>
+                                    <?php endif; ?>
+                                    <?php if ( $next_post ) : ?>
+                                        <a href="<?php echo esc_url( get_permalink( $next_post->ID ) ); ?>" class="post-nav-link post-nav-next">
+                                            <span class="post-nav-label"><?php _e('Nächster Beitrag', 'minecraft-modern-theme'); ?> <i class="fas fa-arrow-right"></i></span>
+                                            <span class="post-nav-title"><?php echo esc_html( get_the_title( $next_post->ID ) ); ?></span>
+                                        </a>
+                                    <?php endif; ?>
+                                </nav>
+                            </footer>
+
+                        </div><!-- .post-content -->
+                    </article>
+
+                    <!-- Related Posts -->
+                    <?php if ( get_theme_mod( 'single_show_related_posts', true ) ) : ?>
+                    <?php
+                    $current_cats = wp_get_post_categories( get_the_ID() );
+                    if ( $current_cats ) :
+                        $related = new WP_Query( array(
+                            'category__in'   => $current_cats,
+                            'post__not_in'   => array( get_the_ID() ),
+                            'posts_per_page' => 3,
+                            'orderby'        => 'rand',
+                        ) );
+                        if ( $related->have_posts() ) : ?>
+                            <section class="related-posts">
+                                <h3 class="related-posts-title">
+                                    <i class="fas fa-layer-group"></i> <?php _e('Ähnliche Beiträge', 'minecraft-modern-theme'); ?>
+                                </h3>
+                                <div class="related-posts-grid">
+                                    <?php while ( $related->have_posts() ) : $related->the_post(); ?>
+                                        <article class="related-post-card">
+                                            <?php if ( has_post_thumbnail() ) : ?>
+                                                <a href="<?php the_permalink(); ?>" class="related-post-thumb">
+                                                    <?php the_post_thumbnail('medium', array('loading' => 'lazy')); ?>
+                                                </a>
+                                            <?php endif; ?>
+                                            <div class="related-post-info">
+                                                <h4 class="related-post-title"><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h4>
+                                                <span class="related-post-date"><i class="fas fa-calendar-alt"></i> <?php echo esc_html( get_the_date() ); ?></span>
+                                            </div>
+                                        </article>
+                                    <?php endwhile; wp_reset_postdata(); ?>
+                                </div>
+                            </section>
+                        <?php endif;
+                    endif; ?>
+                    <?php endif; // single_show_related_posts ?>
+
+                    <?php comments_template(); ?>
+
+                <?php endwhile; ?>
+            </div><!-- .single-main-content -->
+
+            <?php if ( $has_sidebar && $sidebar_position === 'right' ) : ?>
+                <aside class="single-sidebar">
+                    <?php minecraft_modern_render_single_sidebar(); ?>
+                </aside>
+            <?php endif; ?>
+
+        </div><!-- .single-layout -->
     </div>
 </main>