/**
 * Author: Sivan [sun.sivan@gmail.com]
 * Description: define variables, alias etc.
 */

// 定义赫蹏根 class 名
$root-selector: '.heti' !default;

/* 字体 Fonts */
// 字体栈 Font Stacks
$_font-stack-sans: "Helvetica Neue", Helvetica, Arial !default;
$_font-stack-serif: "Times New Roman", Times !default;
$_font-stack-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier !default;
$_font-stack-symbol: "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol" !default;

// 字体族 Font Families
$font-family-hei: $_font-stack-sans, "Heti Hei", sans-serif, $_font-stack-symbol !default;
$font-family-song: $_font-stack-serif, "Heti Song", serif, $_font-stack-symbol !default;
$font-family-kai: $_font-stack-serif, "Heti Kai", serif, $_font-stack-symbol !default;
$font-family-hei-black: $_font-stack-sans, "Heti Hei Black", sans-serif, $_font-stack-symbol !default;
$font-family-song-black: $_font-stack-serif, "Heti Song Black", serif, $_font-stack-symbol !default;
$font-family-kai-black: $_font-stack-serif, "Heti Kai Black", serif, $_font-stack-symbol !default;
$font-family-mono: $_font-stack-mono, monospace, $_font-stack-symbol !default;

// 字重 Font Weights
$font-weight-bolder: 800 !default;
$font-weight-bold: 600 !default;
$font-weight-normal: 400 !default;
$font-weight-lighter: 200 !default;

// 字号 Font Sizes
$font-size-normal: 16px !default;
$font-size-x-large: 20px !default;
$font-size-large: 18px !default;
$font-size-small: 14px !default;
$font-size-x-small: 12px !default;

$font-size-h1: 32px !default;
$font-size-h2: 24px !default;
$font-size-h3: 20px !default;
$font-size-h4: 18px !default;
$font-size-h5: 16px !default;
$font-size-h6: 14px !default;

/* 行 Lines */
// 行宽
$line-length: 42em !default;

// 行高 Line Heights
$line-height-normal: 1.5 !default;
//$line-height-expanded: 1.875 !default;
$line-height-expanded-ultra: 2.25 !default;
//$line-height-condensed: 1.25 !default;
//$line-height-condensed-ultra: 1 !default;

$line-height-size-normal: $font-size-normal * $line-height-normal !default;
$line-height-size-large: $line-height-size-normal !default;
$line-height-size-x-large: $font-size-x-large * $line-height-normal !default;
$line-height-size-small: $line-height-size-normal !default;
$line-height-size-x-small: 18px !default;
$line-height-size-h1: 48px !default;
$line-height-size-h2: 36px !default;
$line-height-size-h3: 36px !default;
$line-height-size-h4: 24px !default;
$line-height-size-h5: 24px !default;
$line-height-size-h6: 24px !default;

/* 段落 Paragraphs */
// 标准网格单位变量 Standard Length
// 垂直方向标准单位 = 标准行高
// 水平方向标准单位 = 标准字号
$std-block-unit: $line-height-size-normal !default;
$std-inline-unit: $font-size-normal !default;

// 示例：缩进单位 = 二倍文字宽度
$text-indent-length: 2em !default;

/* 栏 Columns */
// 分栏
$column-count-list: (1, 2, 3, 4) !default;
$column-width-list: (16em, 20em, 24em, 28em, 32em, 36em, 40em, 44em, 48em) !default;

/* 开发用配置项 Develop Configs */
// 预设重置方案
// `reset`：假定 Eric Meyer 的 CSS Reset 或其它流行的 Reset
// `normalize`：指定为 normalize.css
$_css-reset-scheme: "reset";

/* 混合 Mix-ins */
// Mix-in: Clear float
@mixin clear-float {
  &::before,
  &::after {
    content: "";
    display: table;
  }

  &::after {
    clear: both;
  }
}

// Mix-in: Include Non-cjk styles
@mixin non-cjk-block {
  &:not(:lang(zh)):not(:lang(ja)):not(:lang(kr)),
  &:not(:lang(zh)) {
    @content;
  }
}

// Mix-in: Hang Punctuation Mark
@mixin hang {
  position: absolute;
  line-height: inherit;
  text-indent: 0;
}

/* 函数 Functions */
// Function: batch prefix/suffix list-item
// batch-fix-list((2, 3), '#{$root-selector}--columns-') => (.heti--columns-2, .heti--columns-3)
@function batch-fix-list($list, $prefix: '', $suffix: '') {
  $_list: () !default;

  @each $item in $list {
    $_list: append($_list, #{$prefix}#{$item}#{$suffix}, comma);
  }

  @return $_list;
}