diff --git a/.phase35-state.json b/.phase35-state.json
index 8f3fdff..07ab7f8 100644
--- a/.phase35-state.json
+++ b/.phase35-state.json
@@ -1,8 +1,9 @@
 {
   "completed_features": [],
-  "current_feature": "checkbox-component",
+  "current_feature": "switch-toggle-component",
   "started_at": "2026-05-23T09:53:25.616963",
   "attempted_features": [
-    "dropdown-menu-component"
+    "dropdown-menu-component",
+    "checkbox-component"
   ]
 }
\ No newline at end of file
diff --git a/GENERATION_LOG.md b/GENERATION_LOG.md
index e2a7fc7..3ad39a3 100644
--- a/GENERATION_LOG.md
+++ b/GENERATION_LOG.md
@@ -3834,3 +3834,21 @@ src/index.ts(27,25): error TS2769: No overload matches this call.
   Overload 1 of 3, '(plugin: FastifyPluginCallback<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>, opts?: FastifyRegisterOptions<...> | undefined): FastifyInstance<...> & PromiseLike<...>', gave the following error.
     Argument of type 'Promise<FastifyMultipartPlugin>' is not assignable to parameter of type 'FastifyPluginCallback<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>'.
       Type 'Promise<FastifyMultipartPlugin>' provides no match for the signature '(instance: FastifyInstance<RawServerDefault, IncomingMessage, ServerResponse<IncomingMessage>, 
+- `09:53:55` **INFO**   Committed feature checkbox-component
+- `09:53:55` **INFO**   Pushed: rc=0
+
+## Phase-3 Feature: switch-toggle-component (2026-05-23 09:53:55)
+
+- `09:53:55` **INFO** Description: Switch/Toggle mit slide-Animation
+- `09:53:55` **INFO**   Generating apps/web/src/components/Switch.tsx (Switch-Component. Props: checked, onChange, label?, size?: 'sm'|'md'. …)
+- `09:54:09` **INFO**     wrote 1506 chars in 14.0s (attempt 1)
+- `09:54:09` **INFO** Running tsc --noEmit on api…
+- `09:54:11` **WARN**   tsc errors:
+src/db/schema.ts(37,14): error TS7022: 'customers' implicitly has type 'any' because it does not have a type annotation and is referenced directly or indirectly in its own initializer.
+src/db/schema.ts(45,59): error TS7024: Function implicitly has return type 'any' because it does not have a return type annotation and is referenced directly or indirectly in one of its return expressions.
+src/db/schema.ts(49,14): error TS7022: 'projects' implicitly has type 'any' because it does not have a type annotation and is referenced directly or indirectly in its own initializer.
+src/db/schema.ts(53,56): error TS7024: Function implicitly has return type 'any' because it does not have a return type annotation and is referenced directly or indirectly in one of its return expressions.
+src/index.ts(27,25): error TS2769: No overload matches this call.
+  Overload 1 of 3, '(plugin: FastifyPluginCallback<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>, opts?: FastifyRegisterOptions<...> | undefined): FastifyInstance<...> & PromiseLike<...>', gave the following error.
+    Argument of type 'Promise<FastifyMultipartPlugin>' is not assignable to parameter of type 'FastifyPluginCallback<{ limits: { fileSize: number; }; }, RawServerDefault, FastifyTypeProvider, FastifyBaseLogger>'.
+      Type 'Promise<FastifyMultipartPlugin>' provides no match for the signature '(instance: FastifyInstance<RawServerDefault, IncomingMessage, ServerResponse<IncomingMessage>, 
diff --git a/apps/web/src/components/Switch.tsx b/apps/web/src/components/Switch.tsx
new file mode 100644
index 0000000..3137b3c
--- /dev/null
+++ b/apps/web/src/components/Switch.tsx
@@ -0,0 +1,57 @@
+import React from 'react';
+
+interface SwitchProps {
+  checked: boolean;
+  onChange: (checked: boolean) => void;
+  label?: string;
+  size?: 'sm' | 'md';
+}
+
+const Switch: React.FC<SwitchProps> = ({ 
+  checked, 
+  onChange, 
+  label, 
+  size = 'md' 
+}) => {
+  const sizeClasses = {
+    sm: {
+      container: 'w-8 h-4',
+      thumb: 'w-3 h-3',
+      translate: checked ? 'translate-x-4' : 'translate-x-0',
+    },
+    md: {
+      container: 'w-11 h-6',
+      thumb: 'w-5 h-5',
+      translate: checked ? 'translate-x-5' : 'translate-x-0',
+    },
+  };
+
+  const currentSize = sizeClasses[size];
+
+  return (
+    <div className="flex items-center gap-3">
+      {label && <span className="text-sm font-medium text-zinc-700">{label}</span>}
+      <button
+        type="button"
+        onClick={() => onChange(!checked)}
+        className={`
+          relative inline-flex shrink-0 cursor-pointer items-center rounded-full transition-colors duration-200 ease-in-out focus:outline-none focus:ring-2 focus:ring-blue-500 focus:ring-offset-2
+          ${currentSize.container}
+          ${checked ? 'bg-blue-600' : 'bg-zinc-300'}
+        `}
+        role="switch"
+        aria-checked={checked}
+      >
+        <span
+          className={`
+            pointer-events-none inline-block rounded-full bg-white shadow-lg ring-0 transition-transform duration-200 ease-in-out
+            ${currentSize.thumb}
+            ${currentSize.translate}
+          `}
+        />
+      </button>
+    </div>
+  );
+};
+
+export default Switch;
\ No newline at end of file