Fix offline page: white logo bg, remove duplicate message, load language

- Logo gets white background with padding and rounded corners
- Removed <jdoc:include type="message" /> (was duplicating offline message)
- Load template language files explicitly (not auto-loaded in offline context)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/media/css/offline.css

@@ -71,8 +71,10 @@
 	max-height: 120px;
 	width: auto;
 	height: auto;
-	filter: drop-shadow(0 0 12px rgba(255, 255, 255, 0.3))
-	        drop-shadow(0 0 24px rgba(255, 255, 255, 0.15));
+	background: #fff;
+	padding: 1rem 1.5rem;
+	border-radius: 0.5rem;
+	box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
 }
 
 .moko-offline-brand .site-title {

src/offline.php

@@ -36,6 +36,11 @@ if (is_file($manifestPath)) {
 	$wa->getRegistry()->addRegistryFile($manifestPath);
 }
 
+// Load template language files (not auto-loaded in offline context)
+$lang = Factory::getLanguage();
+$lang->load('tpl_' . $this->template, JPATH_ROOT . '/templates/' . $this->template);
+$lang->load('tpl_' . $this->template, JPATH_ROOT);
+
 /* -----------------------
    Load assets via WebAssetManager (matches index.php pattern)
 ------------------------ */
@@ -283,11 +288,6 @@ if (class_exists('\Joomla\Component\Users\Site\Helper\RouteHelper')) {
 
 	<a class="skip-link" href="#maincontent"><?php echo Text::_('JSKIP_TO_CONTENT') ?: 'Skip to content'; ?></a>
 
-	<!-- Joomla system messages -->
-	<div class="moko-offline-messages">
-		<jdoc:include type="message" />
-	</div>
-
 	<!-- Centered overlay card -->
 	<main id="maincontent">
 		<div class="moko-offline-card">