Fix post detail page navigation issues

- Change back to feed button from onclick to proper link to ensure it always works
- Make platform badge clickable to external source when available (upper left clickable link)
- This addresses the issue where posts had no upper left clickable link and back button didn't work

templates/post_detail.html

@@ -3,67 +3,27 @@
 {% block title %}{{ post.title }} - {{ APP_NAME }}{% endblock %}
 
 {% block content %}
-<!-- Modern Top Navigation -->
-<nav class="top-nav">
-    <div class="nav-content">
-        <div class="nav-left">
-            <div class="logo-section">
-                <img src="{{ url_for('serve_logo') }}" alt="{{ APP_NAME }}" class="nav-logo">
-                <span class="brand-text">{{ APP_NAME }}</span>
-            </div>
-        </div>
-        
-        <div class="nav-center">
-            <div class="search-bar">
-                <input type="text" placeholder="Search content..." class="search-input">
-                <button class="search-btn">🔍</button>
-            </div>
-        </div>
-        
-        <div class="nav-right">
-            {% if current_user.is_authenticated %}
-                <div class="user-menu">
-                    <div class="user-info">
-                        <div class="user-avatar">
-                            {% if current_user.profile_picture_url %}
-                                <img src="{{ current_user.profile_picture_url }}" alt="Avatar">
-                            {% else %}
-                                <div class="avatar-placeholder">{{ current_user.username[:2].upper() }}</div>
-                            {% endif %}
-                        </div>
-                        <span class="username">{{ current_user.username }}</span>
-                    </div>
-                    <div class="user-dropdown">
-                        <a href="{{ url_for('settings') }}" class="dropdown-item">⚙️ Settings</a>
-                        {% if current_user.is_admin %}
-                            <a href="{{ url_for('admin_panel') }}" class="dropdown-item">👨‍💼 Admin Panel</a>
-                        {% endif %}
-                        <a href="{{ url_for('logout') }}" class="dropdown-item">🚪 Logout</a>
-                    </div>
-                </div>
-            {% else %}
-                <div class="auth-buttons">
-                    <a href="{{ url_for('login') }}" class="auth-btn">Login</a>
-                    <a href="{{ url_for('signup') }}" class="auth-btn primary">Sign Up</a>
-                </div>
-            {% endif %}
-        </div>
-    </div>
-</nav>
+{% include '_nav.html' %}
 
 <!-- Main Content Area -->
 <main class="main-content single-post">
     <!-- Back Button -->
     <div class="back-section">
-        <button onclick="goBackToFeed()" class="back-btn">← Back to Feed</button>
+        <a href="{{ url_for('index') }}" class="back-btn">← Back to Feed</a>
     </div>
     
     <!-- Post Content -->
     <article class="post-detail">
         <div class="post-header">
+            {% if post.url and not post.url.startswith('/') %}
+            <a href="{{ post.url }}" target="_blank" class="platform-badge platform-{{ post.platform }}" title="View on {{ post.platform.title() }}">
+                {{ post.platform.title()[:1] }}
+            </a>
+            {% else %}
             <div class="platform-badge platform-{{ post.platform }}">
                 {{ post.platform.title()[:1] }}
             </div>
+            {% endif %}
             <div class="post-meta">
                 <span class="post-author">{{ post.author }}</span>
                 <span class="post-separator">•</span>
@@ -202,6 +162,14 @@
     display: flex;
     align-items: center;
     gap: 12px;
+    text-decoration: none;
+    color: inherit;
+    transition: all 0.2s ease;
+}
+
+.nav-left .logo-section:hover {
+    transform: scale(1.02);
+    text-decoration: none;
 }
 
 .nav-logo {
@@ -359,6 +327,35 @@
     transform: translateY(-1px);
 }
 
+.anonymous-actions {
+    display: flex;
+    gap: 12px;
+}
+
+.login-btn, .register-btn {
+    padding: 8px 16px;
+    border-radius: 8px;
+    text-decoration: none;
+    font-size: 14px;
+    font-weight: 500;
+    transition: all 0.2s ease;
+}
+
+.login-btn {
+    color: #2c3e50;
+    border: 1px solid #e2e8f0;
+}
+
+.register-btn {
+    background: #4db6ac;
+    color: white;
+}
+
+.login-btn:hover, .register-btn:hover {
+    transform: translateY(-1px);
+    text-decoration: none;
+}
+
 /* Main Content */
 .main-content.single-post {
     max-width: 1200px;
@@ -661,12 +658,12 @@
 
 <script>
 function goBackToFeed() {
-    // Try to go back to the dashboard if possible
-    if (document.referrer && document.referrer.includes(window.location.origin)) {
+    // Try to go back in browser history first
+    if (window.history.length > 1 && document.referrer && document.referrer.includes(window.location.origin)) {
         window.history.back();
     } else {
-        // Fallback to dashboard
-        window.location.href = '/';
+        // Fallback to dashboard - use the proper URL
+        window.location.href = {{ url_for('index')|tojson }};
     }
 }