frontend/src/index.css

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

:root {
  --color-primary: #2563eb;
  --color-secondary: #10b981;
}

body {
  @apply bg-gray-50 dark:bg-gray-900 text-gray-900 dark:text-gray-100;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

@layer components {
  .btn-primary {
    @apply px-4 py-2 bg-primary-600 hover:bg-primary-700 text-white rounded-lg font-medium transition-all duration-200 focus:outline-none focus:ring-2 focus:ring-primary-500 focus:ring-offset-2 disabled:opacity-50 disabled:cursor-not-allowed;
  }

  .btn-secondary {
    @apply px-4 py-2 bg-gray-200 hover:bg-gray-300 dark:bg-gray-700 dark:hover:bg-gray-600 text-gray-900 dark:text-gray-100 rounded-lg font-medium transition-all duration-200 focus:outline-none focus:ring-2 focus:ring-gray-500 focus:ring-offset-2;
  }

  .input-field {
    @apply w-full px-4 py-3 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-gray-800 text-gray-900 dark:text-gray-100 placeholder-gray-500 dark:placeholder-gray-400 focus:outline-none focus:ring-2 focus:ring-primary-500 focus:border-transparent transition-all duration-200;
  }

  .card {
    @apply bg-white dark:bg-gray-800 rounded-xl shadow-lg border border-gray-200 dark:border-gray-700;
  }

  .mode-tab {
    @apply px-4 py-2 rounded-lg font-medium transition-all duration-200 flex items-center gap-2;
  }

  .mode-tab-active {
    @apply bg-primary-100 dark:bg-primary-900/30 text-primary-700 dark:text-primary-400;
  }

  .mode-tab-inactive {
    @apply bg-gray-100 dark:bg-gray-800 text-gray-600 dark:text-gray-400 hover:bg-gray-200 dark:hover:bg-gray-700;
  }
}

@layer utilities {
  .scrollbar-thin {
    scrollbar-width: thin;
    scrollbar-color: theme('colors.gray.400') transparent;
  }

  .scrollbar-thin::-webkit-scrollbar {
    width: 6px;
  }

  .scrollbar-thin::-webkit-scrollbar-track {
    background: transparent;
  }

  .scrollbar-thin::-webkit-scrollbar-thumb {
    background-color: theme('colors.gray.400');
    border-radius: 3px;
  }
}