sure/app/assets/tailwind/maybe-design-system/background-utils.css

@utility bg-surface {
  @apply bg-gray-50;

  @variant theme-dark {
    @apply bg-black;
  }
}

@utility bg-surface-hover {
  @apply bg-gray-100;

  @variant theme-dark {
    @apply bg-gray-800;
  }
}

@utility bg-surface-inset {
  @apply bg-gray-100;

  @variant theme-dark {
    @apply bg-gray-800;
  }
}

@utility bg-surface-inset-hover {
  @apply bg-gray-200;

  @variant theme-dark {
    @apply bg-gray-800;
  }
}

@utility bg-container {
  @apply bg-white;

  @variant theme-dark {
    @apply bg-gray-900;
  }
}

@utility bg-container-hover {
  @apply bg-gray-50;

  @variant theme-dark {
    @apply bg-gray-800;
  }
}

@utility bg-container-inset {
  @apply bg-gray-50;

  @variant theme-dark {
    @apply bg-gray-800;
  }
}

@utility bg-container-inset-hover {
  @apply bg-gray-100;

  @variant theme-dark {
    @apply bg-gray-700;
  }
}

@utility bg-inverse {
  @apply bg-gray-800;

  @variant theme-dark {
    @apply bg-white;
  }
}

@utility bg-inverse-hover {
  @apply bg-gray-700;

  @variant theme-dark {
    @apply bg-gray-100;
  }
}

@utility bg-overlay {
  background-color: --alpha(var(--color-gray-100) / 50%);

  @variant theme-dark {
    background-color: var(--color-alpha-black-900);
  }
}

@utility bg-loader {
  @apply bg-surface-inset animate-pulse;
}