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/**
 * @license
 * Copyright (c) 2022 - 2024 Vaadin Ltd.
 * This program is available under Apache License Version 2.0, available at https://vaadin.com/license/
 */
import '../color.js';
import '../sizing.js';
import { css } from '@vaadin/vaadin-themable-mixin/vaadin-themable-mixin.js';

const loader = css`
  [part~='loader'] {
    box-sizing: border-box;
    width: var(--lumo-icon-size-s);
    height: var(--lumo-icon-size-s);
    border: 2px solid transparent;
    border-color: var(--lumo-primary-color-10pct) var(--lumo-primary-color-10pct) var(--lumo-primary-color)
      var(--lumo-primary-color);
    border-radius: calc(0.5 * var(--lumo-icon-size-s));
    opacity: 0;
    pointer-events: none;
  }

  :host(:not([loading])) [part~='loader'] {
    display: none;
  }

  :host([loading]) [part~='loader'] {
    animation:
      1s linear infinite lumo-loader-rotate,
      0.3s 0.1s lumo-loader-fade-in both;
  }

  @keyframes lumo-loader-fade-in {
    0% {
      opacity: 0;
    }

    100% {
      opacity: 1;
    }
  }

  @keyframes lumo-loader-rotate {
    0% {
      transform: rotate(0deg);
    }

    100% {
      transform: rotate(360deg);
    }
  }
`;

export { loader };