chore: remove unused Tailwind CSS configuration file

frontend/tailwind.config.js

@@ -1,43 +0,0 @@
-/** @type {import('tailwindcss').Config} */
-module.exports = {
-  content: [
-    "./src/**/*.{html,ts}",
-  ],
-  theme: {
-    extend: {
-      colors: {
-        // Primary Colors
-        'deep-blue': "#0a1219",        // background
-        'deepBlue': "#0a1219",         // background (alternative format)
-        'deep-blue-light': "#121e27",  // secondary background
-        'deepBlueLight': "#121e27",    // secondary background (alternative format)
-        'deep-blue-contrast': "#1a2835", // cards, elements
-        'deepBlueContrast': "#1a2835", // cards, elements (alternative format)
-
-        // Accent Colors
-        'emerald': "#10b981",         // primary buttons
-        'emerald-dark': "#059669",    // button hover
-        'emeraldDark': "#059669",     // button hover (alternative format)
-        'emerald-light': "#34d399",   // highlights
-        'emeraldLight': "#34d399",    // highlights (alternative format)
-
-        // Text Colors
-        'text-primary': "#ffffff",    // white
-        'textPrimary': "#ffffff",     // white (alternative format)
-        'text-secondary': "#94a3b8",  // light gray
-        'textSecondary': "#94a3b8",   // light gray (alternative format)
-        'text-tertiary': "#64748b",   // darker gray
-        'textTertiary': "#64748b",    // darker gray (alternative format)
-
-        // Additional Accents
-        'accent-yellow': "#fbbf24",
-        'accentYellow': "#fbbf24",    // (alternative format)
-        'accent-red': "#ef4444",
-        'accentRed': "#ef4444",       // (alternative format)
-        'accent-purple': "#8b5cf6",
-        'accentPurple': "#8b5cf6",    // (alternative format)
-      },
-    },
-  },
-  plugins: [],
-};