diff --git a/app/templates/index.html b/app/templates/index.html
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+<!DOCTYPE html>
+<html lang="de">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Vokabeltrainer Englisch 6a</title>
+    <link rel="stylesheet" href="/static/style.css">
+</head>
+<body>
+    <div class="container">
+        <h1>Vokabeltrainer</h1>
+        <div id="setup-screen">
+            <div class="mode-select">
+                <button onclick="setMode('de-en')" id="btn-de-en">Deutsch -> Englisch</button>
+                <button onclick="setMode('en-de')" id="btn-en-de">Englisch -> Deutsch</button>
+                <button onclick="setMode('random')" id="btn-random" class="active">Zufällig</button>
+            </div>
+            <button class="action-btn secondary" onclick="openPageOverlay()">Buchseiten wählen</button>
+            <div id="selected-pages-display">Alle Seiten</div>
+            <button class="action-btn primary" onclick="startQuiz()">Start</button>
+        </div>
+        <div id="quiz-screen" style="display:none;">
+            <div class="card">
+                <div class="label" id="question-label">Übersetze:</div>
+                <div class="question" id="question-text">...</div>
+                <input type="text" id="answer-input" placeholder="Deine Antwort..." autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false">
+                <div id="feedback-msg"></div>
+            </div>
+            <button class="action-btn" onclick="checkAnswer()" id="check-btn">Prüfen</button>
+            <button class="action-btn secondary" onclick="nextQuestion()" id="next-btn" style="display:none;">Nächste</button>
+            <button class="action-btn danger" onclick="stopQuiz()" style="margin-top: 20px;">Beenden</button>
+        </div>
+    </div>
+    <div id="overlay" class="overlay">
+        <div class="overlay-content">
+            <h2>Seiten auswählen</h2>
+            <div id="page-list" class="page-grid"></div>
+            <button class="action-btn primary" onclick="closeOverlay()">Fertig</button>
+        </div>
+    </div>
+    <div class="progress-container">
+        <div class="progress-text" id="progress-text">0% Richtig</div>
+        <div class="progress-bar-bg">
+            <div class="progress-bar-fill" id="progress-bar"></div>
+        </div>
+    </div>
+    <script src="/static/script.js"></script>
+</body>
+</html>
