feat: add design system tokens to Tailwind

tailwind.config.ts

@@ -1,19 +1,51 @@
-import type { Config } from "tailwindcss";
+import type { Config } from 'tailwindcss'
+import { fontFamily } from 'tailwindcss/defaultTheme'
 
 const config: Config = {
   content: [
-    "./pages/**/*.{js,ts,jsx,tsx,mdx}",
-    "./components/**/*.{js,ts,jsx,tsx,mdx}",
-    "./app/**/*.{js,ts,jsx,tsx,mdx}",
+    './app/**/*.{ts,tsx}',
+    './components/**/*.{ts,tsx}',
   ],
   theme: {
     extend: {
       colors: {
-        background: "var(--background)",
-        foreground: "var(--foreground)",
+        bg: {
+          DEFAULT: '#0D0D14',
+          elevated: '#171A21',
+          card: '#1D212B',
+        },
+        border: {
+          DEFAULT: '#2A3140',
+        },
+        accent: {
+          DEFAULT: '#00B4D8',
+          hover: '#00D4FF',
+        },
+        violet: '#7C3AED',
+        coral: '#D64545',
+        amber: '#FFB300',
+        green: '#00D166',
+        text: {
+          primary: '#F3F5F7',
+          secondary: '#B8C0CC',
+          muted: '#7D8795',
+          disabled: '#5C6470',
+        },
+      },
+      borderRadius: {
+        sm: '8px',
+        md: '12px',
+        lg: '16px',
+        xl: '20px',
+        '2xl': '28px',
+      },
+      fontFamily: {
+        sans: ['var(--font-inter)', ...fontFamily.sans],
+        jp: ['var(--font-noto-sans-jp)', ...fontFamily.sans],
       },
     },
   },
   plugins: [],
-};
-export default config;
+}
+
+export default config