0UT1S's

if (!$postId) {
    $postError = "Invalid post ID.";
    // Optional: Redirect to index or a 404 page
    // header("Location: index.php");
    // exit;
} else {
    // --- Fetch the Specific Post ---
    try {
        $stmt = $pdo->prepare("SELECT id, title, content, created_at FROM posts WHERE id = ?");
        $stmt->execute([$postId]);
        $post = $stmt->fetch();

if (!$post) {
            $postError = "Blog post not found.";
            // Optional: Set a 404 header
            // header("HTTP/1.0 404 Not Found");
        } else {
            // Set dynamic page title and description
            $pageTitle = htmlspecialchars($post['title']);
            // Create a short description from content (first 160 chars)
            $metaDescription = htmlspecialchars(substr(strip_tags($post['content']), 0, 160));
        }
    } catch (PDOException $e) {
        $postError = "An error occurred while fetching the post.";
        // Log the error: error_log("Error fetching post ID $postId: " . $e->getMessage());
    }
}

// Include the header (passes $pageTitle and $metaDescription)
include 'header.php';
?>

<div class="max-w-3xl mx-auto bg-white p-6 md:p-8 rounded-lg shadow-md my-8">
    <?php if ($postError): ?>
        <div class="bg-red-100 border border-red-400 text-red-700 px-4 py-3 rounded-md relative" role="alert">
            <strong class="font-bold">Error:</strong>
            <span class="block sm:inline"><?php echo $postError; ?></span>
        </div>
        <p class="mt-4"><a href="index.php#blog" class="text-blue-600 hover:underline">&laquo; Back to Blog</a></p>
    <?php elseif ($post): ?>
        <article>
            <h1 class="text-3xl md:text-4xl font-bold text-gray-800 mb-4"><?php echo htmlspecialchars($post['title']); ?></h1>
            <p class="text-sm text-gray-500 mb-6">
                Posted on: <?php echo date('F j, Y \a\t g:i a', strtotime($post['created_at'])); ?>
            </p>
            <div class="prose max-w-none text-gray-700 leading-relaxed">
                <?php
                    // IMPORTANT: Outputting HTML content requires sanitization if users can input HTML.
                    // If content is plain text or trusted Markdown, this is okay.
                    // If users can submit rich text, use a library like HTML Purifier.
                    echo nl2br(htmlspecialchars($post['content'])); // Basic: Convert newlines to <br>, escape HTML
                ?>
            </div>
        </article>
        <hr class="my-6">
        <a href="index.php#blog" class="text-blue-600 hover:underline">&laquo; Back to Blog List</a>
        <?php else: ?>
         <p class="text-center text-gray-600">Post could not be loaded.</p>
         <p class="mt-4 text-center"><a href="index.php#blog" class="text-blue-600 hover:underline">&laquo; Back to Blog</a></p>
    <?php endif; ?>
</div>

<?php
// Include the footer
include 'footer.php';
?>