feat: improved front-end

public/index.html

@@ -1,13 +1,18 @@
 <!doctype html>
-<html lang="en">
+<html lang="en" class="cyber-theme">
     <head>
         <meta charset="UTF-8" />
         <meta name="viewport" content="width=device-width, initial-scale=1.0" />
         <title>St‑Pierre Flashcards</title>
+        <link rel="stylesheet" href="https://unpkg.com/cybercore-css/dist/cybercore.min.css" />
+        <style>
+            html, body { height: 100%; }
+            body { background: var(--cyber-void-950); }
+            #app { height: 100%; }
+        </style>
     </head>
     <body>
-        <h1>coquelicot d'amour</h1>
-        <div class="flashcard-body" id="app"></div>
+        <div id="app"></div>
         <script type="module" src="/app.js"></script>
     </body>
 </html>