hugo-book-theme/assets/styles.scss

@import 'variables';
@import 'pure-extension';
@import 'markdown';

html {
  font-size: $font-size-base;
}

html, body {
  width: 100%;
  min-height: 100%;
  min-width: $body-min-width;
}

body {
  color: $body-font-color;
  background: $body-background;
}

a {
  text-decoration: none;
  color: $color-link;

  &:visited {
    color: $color-visited-link;
  }
}

ul {
  margin: 0;
  padding-left: $padding-16;
  line-height: $padding-16 * 2;

  li {
    
    a {
      display: block;
    }

    img {
      height: $padding-16;
    }
  }
}

.header {
  position: fixed;
  width: 100%;
  height: $header-height;
  padding: $padding-16;
  top: 0;
  box-sizing: border-box;
  z-index: 1;

  background: $body-background;
  @include shadow;
  
  display: flex;
  align-items: center;

  label {
    line-height: 0;
    margin-right: $padding-16;
    display: none;
  }

  h3 {
    font-weight: 400;
    line-height: 1.5rem;
    margin: 0;

    a {
      color: $nav-link-color;
    }
  }
}

.menu {
  position: fixed;
  width: $nav-menu-width;
  top: $header-height;
  bottom: 0;
  box-sizing: border-box;
  padding: $padding-16;

  background: $nav-background;

  overflow-x: hidden;
  overflow-y: auto;

  transition: transform 0.3s ease-in-out;
  will-change: transform;

  font-size: $font-size-14;
  line-height: 2rem;

  a {
    display: block;
    color: $nav-link-color;

    &.active {
      color: $color-link;
    }
  }

  ul {
    list-style: none;
  }

  // No padding for first level
  > ul {
    padding: 0;
  }

  // Move content
  + div {
    margin-left: $nav-menu-width;
    margin-top: $header-height;
  }

  .root-section {
    margin-bottom: $padding-16;
    > a { font-weight: 600; }
    > ul { padding-left: 0; }
  }
}

.content {
  margin: 0 auto;
  max-width: $content-max-width;
  min-width: $content-min-width;

  .page {
    overflow: hidden;
  }

  .toc {
    font-size: $font-size-12;

    nav > ul {
      border-left: $padding-1 solid $gray-100;
    }

    ul {
      list-style: none;
      padding-left: $padding-8;
      line-height: $padding-16 * 1.5;
    }
  }
}

// Mobile styles
@media screen and (max-width: 50rem) {
  .header label {
    display: inline-block;
  }

  .menu {
    transform: translateX(-$nav-menu-width);

    + div {
      margin-left: 0;
    }
  }

  #nav-control:checked + nav {
    @include shadow;
    transform: translateX(0);
  }
}