module.exports = function() {
  return {
    colors: {
      transparent: 'transparent',

      black: '#000',
      white: '#fff',

      gray: {
        100: '#f7fafc',
        200: '#edf2f7',
        300: '#e2e8f0',
        400: '#cbd5e0',
        500: '#a0aec0',
        600: '#718096',
        700: '#4a5568',
        800: '#2d3748',
        900: '#1a202c',
      },
      red: {
        100: '#fff5f5',
        200: '#fed7d7',
        300: '#feb2b2',
        400: '#fc8181',
        500: '#f56565',
        600: '#e53e3e',
        700: '#c53030',
        800: '#9b2c2c',
        900: '#742a2a',
      },
      orange: {
        100: '#fffaf0',
        200: '#feebc8',
        300: '#fbd38d',
        400: '#f6ad55',
        500: '#ed8936',
        600: '#dd6b20',
        700: '#c05621',
        800: '#9c4221',
        900: '#7b341e',
      },
      yellow: {
        100: '#fffff0',
        200: '#fefcbf',
        300: '#faf089',
        400: '#f6e05e',
        500: '#ecc94b',
        600: '#d69e2e',
        700: '#b7791f',
        800: '#975a16',
        900: '#744210',
      },
      green: {
        100: '#f0fff4',
        200: '#c6f6d5',
        300: '#9ae6b4',
        400: '#68d391',
        500: '#48bb78',
        600: '#38a169',
        700: '#2f855a',
        800: '#276749',
        900: '#22543d',
      },
      teal: {
        100: '#e6fffa',
        200: '#b2f5ea',
        300: '#81e6d9',
        400: '#4fd1c5',
        500: '#38b2ac',
        600: '#319795',
        700: '#2c7a7b',
        800: '#285e61',
        900: '#234e52',
      },
      blue: {
        100: '#ebf8ff',
        200: '#bee3f8',
        300: '#90cdf4',
        400: '#63b3ed',
        500: '#4299e1',
        600: '#3182ce',
        700: '#2b6cb0',
        800: '#2c5282',
        900: '#2a4365',
      },
      indigo: {
        100: '#ebf4ff',
        200: '#c3dafe',
        300: '#a3bffa',
        400: '#7f9cf5',
        500: '#667eea',
        600: '#5a67d8',
        700: '#4c51bf',
        800: '#434190',
        900: '#3c366b',
      },
      purple: {
        100: '#faf5ff',
        200: '#e9d8fd',
        300: '#d6bcfa',
        400: '#b794f4',
        500: '#9f7aea',
        600: '#805ad5',
        700: '#6b46c1',
        800: '#553c9a',
        900: '#44337a',
      },
      pink: {
        100: '#fff5f7',
        200: '#fed7e2',
        300: '#fbb6ce',
        400: '#f687b3',
        500: '#ed64a6',
        600: '#d53f8c',
        700: '#b83280',
        800: '#97266d',
        900: '#702459',
      },
    },
    spacing: {
      px: '1px',
      '0': '0',
      '1': '0.25rem',
      '2': '0.5rem',
      '3': '0.75rem',
      '4': '1rem',
      '5': '1.25rem',
      '6': '1.5rem',
      '8': '2rem',
      '10': '2.5rem',
      '12': '3rem',
      '16': '4rem',
      '20': '5rem',
      '24': '6rem',
      '32': '8rem',
      '40': '10rem',
      '48': '12rem',
      '56': '14rem',
      '64': '16rem',
    },
    screens: {
      sm: '640px',
      md: '768px',
      lg: '1024px',
      xl: '1280px',
    },
    fontFamily: {
      sans: [
        '-apple-system',
        'BlinkMacSystemFont',
        '"Segoe UI"',
        'Roboto',
        '"Helvetica Neue"',
        'Arial',
        '"Noto Sans"',
        'sans-serif',
        '"Apple Color Emoji"',
        '"Segoe UI Emoji"',
        '"Segoe UI Symbol"',
        '"Noto Color Emoji"',
      ],
      serif: ['Georgia', 'Cambria', '"Times New Roman"', 'Times', 'serif'],
      mono: [
        'SFMono-Regular',
        'Menlo',
        'Monaco',
        'Consolas',
        '"Liberation Mono"',
        '"Courier New"',
        'monospace',
      ],
    },
    fontSize: {
      xs: '.75rem',
      sm: '.875rem',
      base: '1rem',
      lg: '1.125rem',
      xl: '1.25rem',
      '2xl': '1.5rem',
      '3xl': '1.875rem',
      '4xl': '2.25rem',
      '5xl': '3rem',
      '6xl': '4rem',
    },
    fontWeight: {
      hairline: 100,
      thin: 200,
      light: 300,
      normal: 400,
      medium: 500,
      semibold: 600,
      bold: 700,
      extrabold: 800,
      black: 900,
    },
    lineHeight: {
      none: 1,
      tight: 1.25,
      snug: 1.375,
      normal: 1.5,
      relaxed: 1.625,
      loose: 2,
    },
    letterSpacing: {
      tighter: '-.05em',
      tight: '-.025em',
      normal: '0',
      wide: '.025em',
      wider: '.05em',
      widest: '.1em',
    },
    textColor: theme => theme.colors,
    backgroundColor: theme => theme.colors,
    backgroundPosition: {
      bottom: 'bottom',
      center: 'center',
      left: 'left',
      'left-bottom': 'left bottom',
      'left-top': 'left top',
      right: 'right',
      'right-bottom': 'right bottom',
      'right-top': 'right top',
      top: 'top',
    },
    backgroundSize: {
      auto: 'auto',
      cover: 'cover',
      contain: 'contain',
    },
    borderWidth: {
      default: '1px',
      '0': '0',
      '2': '2px',
      '4': '4px',
      '8': '8px',
    },
    borderColor: theme => {
      return global.Object.assign({ default: theme.colors.gray[700] }, theme.colors)
    },
    borderRadius: {
      none: '0',
      sm: '.125rem',
      default: '.25rem',
      lg: '.5rem',
      full: '9999px',
    },
    cursor: {
      auto: 'auto',
      default: 'default',
      pointer: 'pointer',
      wait: 'wait',
      move: 'move',
      'not-allowed': 'not-allowed',
    },
    width: theme => ({
      auto: 'auto',
      ...theme.spacing,
      '1/2': '50%',
      '1/3': '33.33333%',
      '2/3': '66.66667%',
      '1/4': '25%',
      '3/4': '75%',
      '1/5': '20%',
      '2/5': '40%',
      '3/5': '60%',
      '4/5': '80%',
      '1/6': '16.66667%',
      '5/6': '83.33333%',
      full: '100%',
      screen: '100vw',
    }),
    height: theme => ({
      auto: 'auto',
      ...theme.spacing,
      full: '100%',
      screen: '100vh',
    }),
    minWidth: {
      '0': '0',
      full: '100%',
    },
    minHeight: {
      '0': '0',
      full: '100%',
      screen: '100vh',
    },
    maxWidth: {
      xs: '20rem',
      sm: '24rem',
      md: '28rem',
      lg: '32rem',
      xl: '36rem',
      '2xl': '42rem',
      '3xl': '48rem',
      '4xl': '56rem',
      '5xl': '64rem',
      '6xl': '72rem',
      full: '100%',
    },
    maxHeight: {
      full: '100%',
      screen: '100vh',
    },
    padding: theme => theme.spacing,
    margin: theme => ({ auto: 'auto', ...theme.spacing }),
    negativeMargin: theme => theme.spacing,
    objectPosition: {
      bottom: 'bottom',
      center: 'center',
      left: 'left',
      'left-bottom': 'left bottom',
      'left-top': 'left top',
      right: 'right',
      'right-bottom': 'right bottom',
      'right-top': 'right top',
      top: 'top',
    },
    boxShadow: {
      default: '0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px 0 rgba(0, 0, 0, .06)',
      md: '0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06)',
      lg: '0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05)',
      xl: '0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04)',
      '2xl': '0 25px 50px -12px rgba(0, 0, 0, .25)',
      inner: 'inset 0 2px 4px 0 rgba(0,0,0,0.06)',
      outline: '0 0 0 3px rgba(52,144,220,0.5)',
      none: 'none',
    },
    zIndex: {
      auto: 'auto',
      '0': 0,
      '10': 10,
      '20': 20,
      '30': 30,
      '40': 40,
      '50': 50,
    },
    opacity: {
      '0': '0',
      '25': '.25',
      '50': '.5',
      '75': '.75',
      '100': '1',
    },
    fill: {
      current: 'currentColor',
    },
    stroke: {
      current: 'currentColor',
    },
    flex: {
      '1': '1 1 0%',
      auto: '1 1 auto',
      initial: '0 1 auto',
      none: 'none',
    },
    flexGrow: {
      '0': 0,
      default: 1,
    },
    flexShrink: {
      '0': 0,
      default: 1,
    },
    listStyleType: {
      none: 'none',
      disc: 'disc',
      decimal: 'decimal',
    },
  }
}