@knadh/oat/css/spinner.css

Ultra-lightweight, zero dependency, semantic HTML/CSS/JS UI library

@layer components {
  [aria-busy="true"] {
    &::before {
      content: "";
      display: inline-block;
      inset: 0;
      margin: auto;
      width: 1.5rem;
      height: 1.5rem;
      border: 2px solid var(--muted);
      border-top-color: var(--primary);
      border-radius: var(--radius-full);
      animation: spin 1s linear infinite;
      text-align: center;
    }

    &[data-spinner~="small"]::before {
      width: 1rem;
      height: 1rem;
    }

    &[data-spinner~="large"]::before {
      width: 2rem;
      height: 2rem;
      border-width: 3px;
    }

    &[data-spinner~="overlay"] {
      position: relative;

      > * {
        opacity: 0.3;

        /* "disable" all elements in the container while it's busy */
        pointer-events: none;
      }

      &::before {
        position: absolute;
        inset: 0;
        margin: auto;
        z-index: 1;
      }
    }
  }

  @keyframes spin {
    to {
      transform: rotate(360deg);
    }
  }
}