// @flow
import type { Styles } from '../types/style'

/**
 * CSS to normalize abnormalities across browsers (normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css)
 *
 * @example
 * // Styles as object usage
 * const styles = {
 *    ...normalize(),
 * }
 *
 * // styled-components usage
 * const GlobalStyle = createGlobalStyle`${normalize()}`
 *
 * // CSS as JS Output
 *
 * html {
 *   lineHeight: 1.15,
 *   textSizeAdjust: 100%,
 * } ...
 */
export default function normalize(): Array<Styles> {
  return [
    {
      html: {
        lineHeight: '1.15',
        textSizeAdjust: '100%',
      },

      body: {
        margin: '0',
      },

      main: {
        display: 'block',
      },

      h1: {
        fontSize: '2em',
        margin: '0.67em 0',
      },

      hr: {
        boxSizing: 'content-box',
        height: '0',
        overflow: 'visible',
      },

      pre: {
        fontFamily: 'monospace, monospace',
        fontSize: '1em',
      },

      a: {
        backgroundColor: 'transparent',
      },

      'abbr[title]': {
        borderBottom: 'none',
        textDecoration: 'underline',
      },

      [`b,
    strong`]: {
        fontWeight: 'bolder',
      },

      [`code,
    kbd,
    samp`]: {
        fontFamily: 'monospace, monospace',
        fontSize: '1em',
      },

      small: {
        fontSize: '80%',
      },

      [`sub,
    sup`]: {
        fontSize: '75%',
        lineHeight: '0',
        position: 'relative',
        verticalAlign: 'baseline',
      },

      sub: {
        bottom: '-0.25em',
      },

      sup: {
        top: '-0.5em',
      },

      img: {
        borderStyle: 'none',
      },

      [`button,
    input,
    optgroup,
    select,
    textarea`]: {
        fontFamily: 'inherit',
        fontSize: '100%',
        lineHeight: '1.15',
        margin: '0',
      },

      [`button,
    input`]: {
        overflow: 'visible',
      },

      [`button,
    select`]: {
        textTransform: 'none',
      },

      [`button,
    html [type="button"],
    [type="reset"],
    [type="submit"]`]: {
        WebkitAppearance: 'button',
      },

      [`button::-moz-focus-inner,
    [type="button"]::-moz-focus-inner,
    [type="reset"]::-moz-focus-inner,
    [type="submit"]::-moz-focus-inner`]: {
        borderStyle: 'none',
        padding: '0',
      },

      [`button:-moz-focusring,
    [type="button"]:-moz-focusring,
    [type="reset"]:-moz-focusring,
    [type="submit"]:-moz-focusring`]: {
        outline: '1px dotted ButtonText',
      },

      fieldset: {
        padding: '0.35em 0.625em 0.75em',
      },

      legend: {
        boxSizing: 'border-box',
        color: 'inherit',
        display: 'table',
        maxWidth: '100%',
        padding: '0',
        whiteSpace: 'normal',
      },

      progress: {
        verticalAlign: 'baseline',
      },

      textarea: {
        overflow: 'auto',
      },

      [`[type="checkbox"],
    [type="radio"]`]: {
        boxSizing: 'border-box',
        padding: '0',
      },

      [`[type="number"]::-webkit-inner-spin-button,
    [type="number"]::-webkit-outer-spin-button`]: {
        height: 'auto',
      },

      '[type="search"]': {
        WebkitAppearance: 'textfield',
        outlineOffset: '-2px',
      },

      '[type="search"]::-webkit-search-decoration': {
        WebkitAppearance: 'none',
      },

      '::-webkit-file-upload-button': {
        WebkitAppearance: 'button',
        font: 'inherit',
      },

      details: {
        display: 'block',
      },

      summary: {
        display: 'list-item',
      },

      template: {
        display: 'none',
      },

      '[hidden]': {
        display: 'none',
      },
    },
    {
      'abbr[title]': {
        textDecoration: 'underline dotted',
      },
    },
  ]
}