add files

parfum-shop/src/theme/ThemeContext.jsx

@@ -0,0 +1,17 @@
+import { createContext, useContext } from "react";
+
+const ThemeContext = createContext(null);
+
+function ThemeProvider({ value, children }) {
+  return <ThemeContext.Provider value={value}>{children}</ThemeContext.Provider>;
+}
+
+function useTheme() {
+  const context = useContext(ThemeContext);
+  if (!context) {
+    throw new Error("useTheme must be used within ThemeProvider.");
+  }
+  return context;
+}
+
+export { ThemeProvider, useTheme };