frontend/src/index.css

@tailwind base;
@tailwind components;
@tailwind utilities;

@layer base {
  :root {
    /* Light mode variables */
    --background: 0 0% 100%;       /* white */
    --foreground: 240 10% 3.9%;    /* zinc-950 */
    --card: 240 4.8% 95.9%;        /* zinc-100 */
    --card-foreground: 240 10% 3.9%;
    --primary: 250 84% 54%;        /* indigo-600 */
    --primary-foreground: 0 0% 100%;
    --secondary: 240 5.9% 90%;     /* zinc-200 */
    --secondary-foreground: 240 5.9% 10%;
    --muted: 240 4.8% 95.9%;
    --muted-foreground: 240 3.8% 46.1%; /* zinc-500 */
    --border: 240 5.9% 90%;
    --input: 240 5.9% 90%;
    --ring: 250 84% 54%;
    --radius: 0.75rem;
  }

  .dark {
    /* Dark mode variables */
    --background: 240 10% 3.9%;    /* zinc-950 */
    --foreground: 240 5% 96%;      /* zinc-100 */
    --card: 240 10% 5.9%;          /* zinc-900 */
    --card-foreground: 240 5% 96%;
    --primary: 250 84% 54%;        /* indigo-600 */
    --primary-foreground: 0 0% 100%;
    --secondary: 240 3.7% 15.9%;   /* zinc-800 */
    --secondary-foreground: 240 5% 96%;
    --muted: 240 3.7% 15.9%;
    --muted-foreground: 240 5% 64.9%; /* zinc-400 */
    --border: 240 3.7% 15.9% / 0.4;
    --input: 240 3.7% 15.9%;
    --ring: 250 84% 54%;
  }

  * {
    @apply border-border;
  }

  body {
    @apply min-h-screen bg-background font-sans text-foreground antialiased selection:bg-indigo-500/30 selection:text-white transition-colors duration-300;
  }

  a {
    @apply text-inherit;
  }
}

@layer utilities {
  .bg-grid-pattern {
    background-image: radial-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px);
    background-size: 24px 24px;
  }
  .dark .bg-grid-pattern {
    background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  }
}