frontend/src/styles/globals.css

/* highlight.js theme — must be before @tailwind directives */
@import 'highlight.js/styles/github.css';

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

@layer base {
  :root {
    --color-brand: theme('colors.brand.DEFAULT');
  }

  /* Smooth skeleton pulse */
  @keyframes skeleton-shimmer {
    0%   { opacity: 0.6; }
    50%  { opacity: 1;   }
    100% { opacity: 0.6; }
  }

  .skeleton {
    animation: skeleton-shimmer 1.8s ease-in-out infinite;
    @apply rounded bg-surface-subtle dark:bg-stone-800;
  }

  /* Code block copy button */
  .code-block-wrapper {
    @apply relative;
  }
  .code-block-wrapper .copy-btn {
    @apply absolute right-2 top-2 hidden rounded px-2 py-1 text-xs
           bg-stone-700 text-white opacity-70 hover:opacity-100;
  }
  .code-block-wrapper:hover .copy-btn {
    @apply block;
  }
}

@layer utilities {
  .scrollbar-thin {
    scrollbar-width: thin;
  }
}