make themes more distict

classes/grundrechenarten.json

@@ -3,29 +3,12 @@
   "name": "Einhorn-Mathe",
   "icon": "🦄",
   "description": "Magische Mathematik mit Einhörnern und Regenbögen",
-  "theme": {
-    "--theme-bg": "#2d1b69",
-    "--theme-bg-mid": "#4a1a8a",
-    "--theme-bg-light": "#6b35b5",
-    "--theme-bg-hover": "#7d42cc",
-    "--theme-text": "#fce4ff",
-    "--theme-muted": "#c4a0dc",
-    "--theme-muted-light": "#dfc4f0",
-    "--theme-accent": "#ff69b4",
-    "--theme-accent-hover": "#e91e8c",
-    "--theme-content-bg": "#fef0ff",
-    "--theme-card-bg": "#fce8ff",
-    "--theme-card-radius": "16px",
-    "--theme-ui-radius": "12px",
-    "--theme-card-shadow": "0 6px 24px rgba(255,105,180,0.18)",
-    "--theme-font": "'Trebuchet MS', sans-serif",
-    "--theme-text-transform": "none",
-    "--theme-letter-spacing": "0px",
-    "--theme-h1-letter-spacing": "0px",
-    "--theme-sidebar-item-margin": "3px 8px",
-    "--theme-sidebar-active-bg": "#ff69b4",
-    "--theme-sidebar-active-border": "none",
-    "--theme-sidebar-active-color": "#ffffff"
+  "theme": "unicorn",
+  "colors": {
+    "bg": "#3d2280",
+    "accent": "#ff69b4",
+    "text": "#fce4ff",
+    "muted": "#c4a0dc"
   },
   "lessons": ["adding"]
 }