diff --git a/components/pages/dark-mode-btn.tsx b/components/pages/dark-mode-btn.tsx
index 1dd3f03..1dbb17e 100644
--- a/components/pages/dark-mode-btn.tsx
+++ b/components/pages/dark-mode-btn.tsx
@@ -1,23 +1,18 @@
 import clsx from 'clsx';
+import { MEDIA, THEME_MAP } from 'lib/consts';
 import useMounted from 'lib/hooks/use-mounted';
 import { useTheme } from 'next-themes';
 import { memo, useCallback, useEffect } from 'react';
 import { FiMoon, FiSun } from 'react-icons/fi';
 
-const MEDIA = '(prefers-color-scheme: dark)';
-
 const DarkModeBtn = () => {
   const { mounted } = useMounted();
   const { theme, setTheme } = useTheme();
   const handleTheme = (type: 'latte' | 'mocha') => () => {
     const media = window.matchMedia(MEDIA);
-    const map = {
-      light: 'latte',
-      dark: 'mocha',
-    };
     const system = media.matches ? 'dark' : 'light';
     setTheme(type);
-    if (map[system] === type) {
+    if (THEME_MAP[system] === type) {
       try {
         window.localStorage.removeItem('rua-theme');
       } catch (err) {}
diff --git a/components/rua/rua-code-sandbox.tsx b/components/rua/rua-code-sandbox.tsx
index 60f90f0..aa9402b 100644
--- a/components/rua/rua-code-sandbox.tsx
+++ b/components/rua/rua-code-sandbox.tsx
@@ -5,6 +5,7 @@ import useInView from 'lib/hooks/use-in-view';
 import { useTheme } from 'next-themes';
 import { memo, useEffect, useState } from 'react';
 import RUALoading from './loading/rua-loading';
+import { THEME_CATPUCCIN_MAP, THEME_MAP } from 'lib/consts';
 
 const pattern =
   /https?:\/\/(www\.)?[-a-zA-Z0-9@:%._+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_+.~#?&/=]*)/;
@@ -19,8 +20,7 @@ type Props = {
 
 const RUACodeSandbox = ({ url }: Props) => {
   const isUrl = pattern.test(url);
-  const { systemTheme, theme } = useTheme();
-  const currentTheme = theme === 'system' ? systemTheme : theme ?? 'light';
+  const { theme } = useTheme();
 
   const { ref, inView } = useInView();
   const embed = new URL(url).pathname.split('/')[2];
@@ -28,9 +28,13 @@ const RUACodeSandbox = ({ url }: Props) => {
   useEffect(() => {
     inView &&
       setSrc(
-        `https://codesandbox.io/embed/${embed}?fontsize=14&hidenavigation=1&theme=${currentTheme}&view=preview`,
+        `https://codesandbox.io/embed/${embed}?fontsize=14&hidenavigation=1&theme=${
+          THEME_CATPUCCIN_MAP[
+            (theme ?? 'latte') as keyof typeof THEME_CATPUCCIN_MAP
+          ]
+        }&view=preview`,
       );
-  }, [currentTheme, embed, inView]);
+  }, [embed, inView, theme]);
 
   const [load, setLoad] = useState(false);
   const handleLoad = () => {
diff --git a/components/rua/rua-sandpack.tsx b/components/rua/rua-sandpack.tsx
index 7d10fa2..bdacf08 100644
--- a/components/rua/rua-sandpack.tsx
+++ b/components/rua/rua-sandpack.tsx
@@ -1,21 +1,35 @@
 'use client';
 
 import { Sandpack, SandpackProps } from '@codesandbox/sandpack-react';
+import { THEME_CATPUCCIN_MAP } from 'lib/consts';
+import useMounted from 'lib/hooks/use-mounted';
 import { useTheme } from 'next-themes';
 import { memo } from 'react';
 
 interface Props extends SandpackProps {}
 
 const RUASandpack = ({ ...rest }: Props) => {
-  const { systemTheme, theme } = useTheme();
-  const currentTheme = theme === 'system' ? systemTheme : theme;
+  const { mounted } = useMounted();
+  const { theme } = useTheme();
+
+  if (!mounted) {
+    return (
+      <div className="my-2 min-h-[402px]">
+        <Sandpack {...rest} />
+      </div>
+    );
+  }
 
   return (
     <>
       <div className="my-2 min-h-[402px]">
         <Sandpack
           {...rest}
-          theme={currentTheme === 'dark' ? 'dark' : 'light'}
+          theme={
+            THEME_CATPUCCIN_MAP[
+              (theme ?? 'latte') as keyof typeof THEME_CATPUCCIN_MAP
+            ]
+          }
         />
       </div>
     </>
diff --git a/lib/consts.ts b/lib/consts.ts
new file mode 100644
index 0000000..5db3319
--- /dev/null
+++ b/lib/consts.ts
@@ -0,0 +1,9 @@
+export const MEDIA = '(prefers-color-scheme: dark)';
+export const THEME_CATPUCCIN_MAP = {
+  latte: 'light' as const,
+  mocha: 'dark' as const,
+};
+export const THEME_MAP = {
+  light: 'latte' as const,
+  dark: 'mocha' as const,
+};