diff --git a/backend/includes/header.php b/backend/includes/header.php
index 3686703..1c2093e 100644
--- a/backend/includes/header.php
+++ b/backend/includes/header.php
@@ -31,8 +31,9 @@
     <meta property="og:description" content="<?php echo isset($page_description) ? htmlspecialchars($page_description) : 'Zuverlässiges Hosting aus Niederbayern'; ?>">
     <meta property="og:locale" content="de_DE">
     
-    <!-- Main Stylesheet -->
+    <!-- Main Stylesheets -->
     <link rel="stylesheet" href="/assets/css/style.css">
+    <link rel="stylesheet" href="/assets/css/custom.css">
     
     <!-- Fonts -->
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Russo+One&family=Source+Sans+Pro:wght@300;400;600;700&display=swap" rel="stylesheet">
diff --git a/public/assets/css/custom.css b/public/assets/css/custom.css
new file mode 100644
index 0000000..6f9f7c4
--- /dev/null
+++ b/public/assets/css/custom.css
@@ -0,0 +1,12 @@
+.btn-tertiary {
+    color: var(--text-primary);
+    background: transparent;
+    border: 1px solid rgba(255, 255, 255, 0.25);
+    transition: all 0.3s ease;
+}
+
+.btn-tertiary:hover {
+    border-color: var(--primary-color);
+    color: var(--primary-color);
+    background: rgba(255, 81, 249, 0.08);
+}