feat: initial portfolio implementation with dark mode and i18n

- Add Astro portfolio with TypeScript
- Implement dark/light theme toggle
- Add Spanish/English translations
- Create under construction page
- Style with Tailwind CSS and glassmorphism effects
- Add profile image, projects, skills, and experience sections

tailwind.config.js

@@ -0,0 +1,24 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+  darkMode: 'class',
+  content: ['./src/**/*.{astro,html,js,ts,jsx,tsx}'],
+  theme: {
+    extend: {
+      colors: {
+        primary: '#8c2bee',
+        'background-light': '#f7f6f8',
+        'background-dark': '#191022',
+      },
+      fontFamily: {
+        display: ['Space Grotesk', 'sans-serif'],
+      },
+      borderRadius: {
+        DEFAULT: '0.5rem',
+        lg: '1rem',
+        xl: '1.5rem',
+        full: '9999px',
+      },
+    },
+  },
+  plugins: [],
+}