feat: tailwindcss dark mode color

src/style.css

@@ -1,3 +1,21 @@
 @tailwind base;
 @tailwind components;
 @tailwind utilities;
+
+@layer base {
+  :root {
+    --text-main: #333;
+    --text-secondary: #4b525d;
+    --bg-card: #fff;
+    --bg-active: #fbfbfc;
+    --bg-hover: #eee;
+  }
+
+  html.dark {
+    --text-main: #f7f7f7;
+    --text-secondary: #6f6e84;
+    --bg-card: #28334e;
+    --bg-active: #242b40;
+    --bg-hover: #303044;
+  }
+}