(function (Prism) {
  var unit = {
    pattern: /(\b\d+)(?:%|[a-z]+)/,
    lookbehind: true,
  };
  // 123 -123 .123 -.123 12.3 -12.3
  var number = {
    pattern: /(^|[^\w.-])-?(?:\d+(?:\.\d+)?|\.\d+)/,
    lookbehind: true,
  };

  var inside = {
    comment: {
      pattern: /(^|[^\\])(?:\/\*[\s\S]*?\*\/|\/\/.*)/,
      lookbehind: true,
    },
    url: {
      pattern: /\burl\((["']?).*?\1\)/i,
      greedy: true,
    },
    string: {
      pattern: /("|')(?:(?!\1)[^\\\r\n]|\\(?:\r\n|[\s\S]))*\1/,
      greedy: true,
    },
    interpolation: null, // See below
    func: null, // See below
    important: /\B!(?:important|optional)\b/i,
    keyword: {
      pattern: /(^|\s+)(?:(?:else|for|if|return|unless)(?=\s|$)|@[\w-]+)/,
      lookbehind: true,
    },
    hexcode: /#[\da-f]{3,6}/i,
    color: [
      /\b(?:AliceBlue|AntiqueWhite|Aqua|Aquamarine|Azure|Beige|Bisque|Black|BlanchedAlmond|Blue|BlueViolet|Brown|BurlyWood|CadetBlue|Chartreuse|Chocolate|Coral|CornflowerBlue|Cornsilk|Crimson|Cyan|DarkBlue|DarkCyan|DarkGoldenRod|DarkGr[ae]y|DarkGreen|DarkKhaki|DarkMagenta|DarkOliveGreen|DarkOrange|DarkOrchid|DarkRed|DarkSalmon|DarkSeaGreen|DarkSlateBlue|DarkSlateGr[ae]y|DarkTurquoise|DarkViolet|DeepPink|DeepSkyBlue|DimGr[ae]y|DodgerBlue|FireBrick|FloralWhite|ForestGreen|Fuchsia|Gainsboro|GhostWhite|Gold|GoldenRod|Gr[ae]y|Green|GreenYellow|HoneyDew|HotPink|IndianRed|Indigo|Ivory|Khaki|Lavender|LavenderBlush|LawnGreen|LemonChiffon|LightBlue|LightCoral|LightCyan|LightGoldenRodYellow|LightGr[ae]y|LightGreen|LightPink|LightSalmon|LightSeaGreen|LightSkyBlue|LightSlateGr[ae]y|LightSteelBlue|LightYellow|Lime|LimeGreen|Linen|Magenta|Maroon|MediumAquaMarine|MediumBlue|MediumOrchid|MediumPurple|MediumSeaGreen|MediumSlateBlue|MediumSpringGreen|MediumTurquoise|MediumVioletRed|MidnightBlue|MintCream|MistyRose|Moccasin|NavajoWhite|Navy|OldLace|Olive|OliveDrab|Orange|OrangeRed|Orchid|PaleGoldenRod|PaleGreen|PaleTurquoise|PaleVioletRed|PapayaWhip|PeachPuff|Peru|Pink|Plum|PowderBlue|Purple|Red|RosyBrown|RoyalBlue|SaddleBrown|Salmon|SandyBrown|SeaGreen|SeaShell|Sienna|Silver|SkyBlue|SlateBlue|SlateGr[ae]y|Snow|SpringGreen|SteelBlue|Tan|Teal|Thistle|Tomato|Transparent|Turquoise|Violet|Wheat|White|WhiteSmoke|Yellow|YellowGreen)\b/i,
      {
        pattern:
          /\b(?:hsl|rgb)\(\s*\d{1,3}\s*,\s*\d{1,3}%?\s*,\s*\d{1,3}%?\s*\)\B|\b(?:hsl|rgb)a\(\s*\d{1,3}\s*,\s*\d{1,3}%?\s*,\s*\d{1,3}%?\s*,\s*(?:0|0?\.\d+|1)\s*\)\B/i,
        inside: {
          unit: unit,
          number: number,
          function: /[\w-]+(?=\()/,
          punctuation: /[(),]/,
        },
      },
    ],
    entity: /\\[\da-f]{1,8}/i,
    unit: unit,
    boolean: /\b(?:false|true)\b/,
    operator: [
      // We want non-word chars around "-" because it is
      // accepted in property names.
      /~|[+!\/%<>?=]=?|[-:]=|\*[*=]?|\.{2,3}|&&|\|\||\B-\B|\b(?:and|in|is(?: a| defined| not|nt)?|not|or)\b/,
    ],
    number: number,
    punctuation: /[{}()\[\];:,]/,
  };

  inside['interpolation'] = {
    pattern: /\{[^\r\n}:]+\}/,
    alias: 'variable',
    inside: {
      delimiter: {
        pattern: /^\{|\}$/,
        alias: 'punctuation',
      },
      rest: inside,
    },
  };
  inside['func'] = {
    pattern: /[\w-]+\([^)]*\).*/,
    inside: {
      function: /^[^(]+/,
      rest: inside,
    },
  };

  Prism.languages.stylus = {
    'atrule-declaration': {
      pattern: /(^[ \t]*)@.+/m,
      lookbehind: true,
      inside: {
        atrule: /^@[\w-]+/,
        rest: inside,
      },
    },
    'variable-declaration': {
      pattern: /(^[ \t]*)[\w$-]+\s*.?=[ \t]*(?:\{[^{}]*\}|\S.*|$)/m,
      lookbehind: true,
      inside: {
        variable: /^\S+/,
        rest: inside,
      },
    },

    statement: {
      pattern: /(^[ \t]*)(?:else|for|if|return|unless)[ \t].+/m,
      lookbehind: true,
      inside: {
        keyword: /^\S+/,
        rest: inside,
      },
    },

    // A property/value pair cannot end with a comma or a brace
    // It cannot have indented content unless it ended with a semicolon
    'property-declaration': {
      pattern:
        /((?:^|\{)([ \t]*))(?:[\w-]|\{[^}\r\n]+\})+(?:\s*:\s*|[ \t]+)(?!\s)[^{\r\n]*(?:;|[^{\r\n,]$(?!(?:\r?\n|\r)(?:\{|\2[ \t])))/m,
      lookbehind: true,
      inside: {
        property: {
          pattern: /^[^\s:]+/,
          inside: {
            interpolation: inside.interpolation,
          },
        },
        rest: inside,
      },
    },

    // A selector can contain parentheses only as part of a pseudo-element
    // It can span multiple lines.
    // It must end with a comma or an accolade or have indented content.
    selector: {
      pattern:
        /(^[ \t]*)(?:(?=\S)(?:[^{}\r\n:()]|::?[\w-]+(?:\([^)\r\n]*\)|(?![\w-]))|\{[^}\r\n]+\})+)(?:(?:\r?\n|\r)(?:\1(?:(?=\S)(?:[^{}\r\n:()]|::?[\w-]+(?:\([^)\r\n]*\)|(?![\w-]))|\{[^}\r\n]+\})+)))*(?:,$|\{|(?=(?:\r?\n|\r)(?:\{|\1[ \t])))/m,
      lookbehind: true,
      inside: {
        interpolation: inside.interpolation,
        comment: inside.comment,
        punctuation: /[{},]/,
      },
    },

    func: inside.func,
    string: inside.string,
    comment: {
      pattern: /(^|[^\\])(?:\/\*[\s\S]*?\*\/|\/\/.*)/,
      lookbehind: true,
      greedy: true,
    },
    interpolation: inside.interpolation,
    punctuation: /[{}()\[\];:.]/,
  };
})(Prism);