// Author: Sivan [sun.sivan@gmail.com]
// Description: grid container.
$grid-sizes: (
  "12": 12px,
  "24": 24px
);
$padding-mobile: 12px;
$padding-desktop: 48px;

@mixin grid-image-horizontal($grid-width, $padding-width, $grid-color: hsl(0, 0%, 93%), $margin-color: $grid-color) {
  background-image:
    linear-gradient(transparent ($grid-width - 1px), $grid-color 1px),
    linear-gradient(to left, transparent $padding-width, $grid-color, transparent ($padding-width + 1px)),
    linear-gradient(to right, transparent $padding-width, $margin-color, transparent ($padding-width + 1px));
}

@mixin grid-image-vertical($grid-width, $grid-color: hsl(0, 0%, 93%)) {
  background-size: $grid-width 100%;
  background-image: linear-gradient(to left, transparent ($grid-width - 1px), $grid-color 1px);
}

@mixin darkmode-mobile {
  @each $size, $width in $grid-sizes {
    &[data-bg-grid="grid-#{$size}"] {
      @include grid-image-horizontal($width, $padding-mobile, hsl(0, 0%, 20%));

      .heti--vertical {
        @include grid-image-vertical($width, hsl(0, 0%, 20%));
      }
    }
  }
}

@mixin darkmode-desktop {
  @each $size, $width in $grid-sizes {
    &[data-bg-grid="grid-#{$size}"] {
      @include grid-image-horizontal($width, $padding-desktop, hsl(0, 0%, 20%), hsla(360, 100%, 65%, 0.4));
    }
  }
}

.container {
  @each $size, $width in $grid-sizes {
    &[data-bg-grid="grid-#{$size}"] {
      background-size: 100% $width;

      @include grid-image-horizontal($width, $padding-mobile);

      .heti--vertical {
        outline: 1px solid hsl(0, 0%, 93%);

        @include grid-image-vertical($width);
      }
    }
  }

  [data-darkmode="dark"] & {
    @include darkmode-mobile;
  }

  @media (prefers-color-scheme: dark) {
    [data-darkmode="auto"] & {
      @include darkmode-mobile;
    }
  }

  @media screen and (min-width: 640px) {
    @each $size, $width in $grid-sizes {
      &[data-bg-grid="grid-#{$size}"] {
        // 桌面端增加缩进，修改边距线为红色
        @include grid-image-horizontal($width, $padding-desktop, hsl(0, 0%, 93%), hsla(360, 100%, 50%, 0.4));
      }
    }

    [data-darkmode="dark"] & {
      @include darkmode-desktop;
    }

    @media (prefers-color-scheme: dark) {
      [data-darkmode="auto"] & {
        @include darkmode-desktop;
      }
    }
  }
}