diff --git a/views/partials/head.ejs b/views/partials/head.ejs
index d2922b7..ef746fb 100644
--- a/views/partials/head.ejs
+++ b/views/partials/head.ejs
@@ -1,6 +1,17 @@
 <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 <title>Bewerbungs-Tracker</title>
+<!-- Apply the dark class before first paint to avoid a light-mode flash (FOUC). -->
+<script>
+    (function () {
+        try {
+            var dm = localStorage.getItem('darkMode');
+            if (dm === 'enabled' || (!dm && window.matchMedia('(prefers-color-scheme: dark)').matches)) {
+                document.documentElement.classList.add('dark');
+            }
+        } catch (e) { /* ignore */ }
+    })();
+</script>
 <!-- Tailwind CSS CDN -->
 <script src="https://cdn.tailwindcss.com"></script>
 <script>