diff --git a/app/static/style_v2.css b/app/static/style_v2.css
deleted file mode 100644
index 8dfc634..0000000
--- a/app/static/style_v2.css
+++ /dev/null
@@ -1,179 +0,0 @@
-:root {
-    /* HIER: Primary ist jetzt GRÜN */
-    --primary: #28a745; 
-    --primary-hover: #218838;
-    
-    --accent: #ff9800;
-    --danger: #dc3545;
-    --bg: #f4f4f9;
-}
-
-body {
-    font-family: sans-serif;
-    background: var(--bg);
-    margin: 0;
-    display: flex;
-    flex-direction: column;
-    min-height: 100vh;
-}
-
-.container {
-    flex: 1;
-    max-width: 500px;
-    margin: 0 auto;
-    padding: 20px;
-    width: 100%;
-    box-sizing: border-box;
-    display: flex;
-    flex-direction: column;
-    justify-content: center;
-}
-
-#quiz-screen {
-    display: flex;
-    flex-direction: column;
-    width: 100%;
-    align-items: center;
-}
-
-h1 { text-align: center; margin-bottom: 20px; color: #333; }
-
-.section-title {
-    font-weight: bold;
-    margin: 20px 0 10px;
-    text-align: center;
-    color: #555;
-    text-transform: uppercase;
-}
-
-.button-group, .quiz-controls {
-    display: flex;
-    flex-direction: column !important;
-    gap: 15px;
-    width: 100%;
-}
-
-button {
-    display: block !important;
-    width: 100%;
-    padding: 16px;
-    border: 2px solid #ddd;
-    background: white;
-    border-radius: 8px;
-    font-size: 1.1rem;
-    font-weight: bold;
-    cursor: pointer;
-    text-align: center;
-}
-
-button:hover { background: #f0f0f0; }
-
-button.active {
-    background: #e9f7ef; /* Hellgrün */
-    border-color: var(--primary);
-    color: var(--primary);
-}
-
-.special-btn.active {
-    background: #fff3e0;
-    border-color: var(--accent);
-    color: #e65100;
-}
-
-/* Der Action Button ist jetzt GRÜN (über --primary) */
-.action-btn { color: white; border: none; margin-top: 0; transition: background 0.2s; }
-.primary { background: var(--primary); }
-.primary:hover { background: var(--primary-hover); }
-
-.secondary { background: #6c757d; }
-.danger { background: var(--danger); }
-button:disabled { opacity: 0.5; cursor: not-allowed; }
-
-.card {
-    background: white;
-    padding: 25px;
-    border-radius: 12px;
-    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
-    text-align: center;
-    margin-bottom: 25px;
-    width: 100%;
-    box-sizing: border-box;
-}
-
-.label { font-size: 0.9rem; color: #888; text-transform: uppercase; }
-.question { font-size: 2rem; font-weight: bold; margin: 15px 0; color: #222; }
-.hint { color: #888; font-style: italic; margin-bottom: 15px; }
-
-input {
-    width: 100%;
-    padding: 14px;
-    margin-bottom: 10px;
-    border: 2px solid #ddd;
-    border-radius: 8px;
-    font-size: 1.2rem;
-    text-align: center;
-    box-sizing: border-box;
-}
-input:focus { border-color: var(--primary); outline: none; }
-
-.feedback { font-weight: bold; margin-top: 10px; font-size: 1.1rem; min-height: 25px;}
-.correct { color: var(--primary); }
-.wrong { color: var(--danger); }
-.typo { color: var(--accent); }
-
-.overlay {
-    display: none;
-    position: fixed;
-    top: 0; left: 0; width: 100%; height: 100%;
-    background: rgba(0,0,0,0.5);
-    z-index: 1000;
-    justify-content: center;
-    align-items: center;
-    padding: 20px;
-}
-.overlay-content {
-    background: white;
-    padding: 20px;
-    border-radius: 12px;
-    width: 100%;
-    max-width: 400px;
-    max-height: 80vh;
-    display: flex;
-    flex-direction: column;
-}
-.page-grid {
-    display: grid;
-    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
-    gap: 10px;
-    overflow-y: auto;
-    margin: 15px 0;
-    flex: 1;
-}
-.page-item label {
-    display: block;
-    padding: 12px;
-    background: #f8f9fa;
-    border-radius: 6px;
-    font-weight: bold;
-    color: #555;
-    text-align: center;
-    cursor: pointer;
-    border: 2px solid transparent;
-}
-.page-item input { display: none; }
-.page-item input:checked + label {
-    background: #e9f7ef;
-    border-color: var(--primary);
-    color: var(--primary);
-}
-
-.progress-container {
-    background: white;
-    padding: 10px;
-    border-top: 1px solid #eee;
-    text-align: center;
-    position: fixed;
-    bottom: 0; left: 0; right: 0;
-}
-.progress-bar-bg { height: 8px; background: #eee; width: 100%; border-radius: 4px; overflow: hidden; margin-top: 5px; }
-.progress-bar-fill { height: 100%; background: var(--primary); width: 0%; transition: width 0.3s; }
\ No newline at end of file