v2 original port

10 files changed, 852 insertions, 0 deletions

diff --git a/assets/_primer/support/index.scss b/assets/_primer/support/index.scss
new file mode 100644
index 0000000..93f9449
--- /dev/null
+++ b/assets/_primer/support/index.scss
@@ -0,0 +1,11 @@
+// variables
+@import "./variables/typography.scss";
+@import "./variables/colors.scss";
+@import "./variables/layout.scss";
+@import "./variables/misc.scss";
+
+// mixins
+@import "./mixins/typography.scss";
+@import "./mixins/layout.scss";
+@import "./mixins/buttons.scss";
+@import "./mixins/misc.scss";
diff --git a/assets/_primer/support/mixins/buttons.scss b/assets/_primer/support/mixins/buttons.scss
new file mode 100644
index 0000000..4b6cbb3
--- /dev/null
+++ b/assets/_primer/support/mixins/buttons.scss
@@ -0,0 +1,167 @@
+// Button color generator for primary and themed buttons
+
+// New button hotness
+@mixin btn-solid($color, $bg, $bg2) {
+  color: $color;
+  background-color: $bg2;
+  background-image: linear-gradient(-180deg, $bg 0%, $bg2 90%);
+
+  @if $bg == $gray-000 {
+    &:focus,
+    &.focus {
+      box-shadow: $btn-input-focus-shadow;
+    }
+
+    &:hover,
+    &.hover {
+      background-color: darken($bg2, 3%);
+      background-image: linear-gradient(-180deg, darken($bg, 3%) 0%, darken($bg2, 3%) 90%);
+      background-position: 0 -$em-spacer-5;
+      border-color: rgba($black, 0.35);
+    }
+
+    &:active,
+    &.selected,
+    &[aria-selected=true],
+    [open] > & {
+      background-color: darken(desaturate($bg, 10%), 6%);
+      background-image: none;
+      border-color: rgba($black, 0.35); // repeat to avoid shift on click-drag off of button
+      box-shadow: $btn-active-shadow;
+    }
+
+    &:disabled,
+    &.disabled,
+    &[aria-disabled=true] {
+      color: rgba($color, 0.4);
+      background-color: $bg2;
+      background-image: none;
+      border-color: $border-color-button;
+      box-shadow: none;
+    }
+
+  }
+  @else {
+    &:focus,
+    &.focus {
+      box-shadow: 0 0 0 0.2em rgba($bg, 0.4);
+    }
+
+    &:hover,
+    &.hover {
+      background-color: darken($bg2, 2%);
+      background-image: linear-gradient(-180deg, darken($bg, 2%) 0%, darken($bg2, 2%) 90%);
+      background-position: 0 -$em-spacer-5;
+      border-color: $black-fade-50;
+    }
+
+    &:active,
+    &.selected,
+    &[aria-selected=true],
+    [open] > & {
+      background-color: darken(mix($bg, $bg2, 50%), 7%);
+      background-image: none;
+      border-color: $black-fade-50; // repeat to avoid shift on click-drag off of button
+      box-shadow: $btn-active-shadow;
+    }
+
+    &:disabled,
+    &.disabled,
+    &[aria-disabled=true] {
+      color: rgba($color, 0.75);
+      background-color: mix($bg2, $white, 50%);
+      background-image: none;
+      border-color: $border-color-button;
+      box-shadow: none;
+    }
+
+    .Counter {
+      color: darken($bg, 8%);
+      background-color: $white;
+    }
+  }
+}
+
+// Inverse button hover style
+@mixin btn-inverse($color, $bg, $bg2) {
+  color: $color;
+  background-color: $bg;
+  background-image: linear-gradient(-180deg, $bg 0%, $bg2 90%);
+
+  &:focus {
+    box-shadow: 0 0 0 0.2em rgba($color, 0.4);
+  }
+
+  &:hover {
+    color: $text-white;
+    background-color: $color;
+    background-image: linear-gradient(-180deg, lighten($color, 10%) 0%, $color 90%);
+    border-color: $black-fade-50;
+
+    .Counter {
+      color: $text-white;
+    }
+  }
+
+  &:active,
+  &.selected,
+  &[aria-selected=true],
+  [open] > & {
+    color: $text-white;
+    background-color: darken($color, 5%);
+    background-image: none;
+    border-color: $black-fade-50;
+    box-shadow: $btn-active-shadow;
+  }
+
+  &:disabled,
+  &.disabled,
+  &[aria-disabled=true] {
+    color: rgba($color, 0.4);
+    background-color: $bg2;
+    background-image: none;
+    border-color: $border-color-button;
+    box-shadow: none;
+  }
+}
+
+// Outline color generator for btn-outline to make the hover state inverse the text and bg colors.
+@mixin btn-outline($text-color: $text-blue, $bg-color: $bg-white) {
+  color: $text-color;
+  background-color: $bg-color;
+  background-image: none;
+
+  .Counter {
+    background-color: rgba($black, 0.07);
+  }
+
+  &:hover,
+  &:active,
+  &.selected,
+  &[aria-selected=true],
+  [open] > & {
+    color: $bg-color;
+    background-color: $text-color;
+    background-image: none;
+    border-color: $text-color;
+
+    .Counter {
+      color: $text-color;
+      background-color: $bg-color;
+    }
+  }
+
+  &:focus {
+    border-color: $text-color;
+    box-shadow: 0 0 0 0.2em rgba($text-color, 0.4);
+  }
+
+  &:disabled,
+  &.disabled,
+  &[aria-disabled=true] {
+    color: $black-fade-30;
+    background-color: $bg-white;
+    border-color: $black-fade-15;
+    box-shadow: none;
+  }
+}
diff --git a/assets/_primer/support/mixins/layout.scss b/assets/_primer/support/mixins/layout.scss
new file mode 100644
index 0000000..a6d30cf
--- /dev/null
+++ b/assets/_primer/support/mixins/layout.scss
@@ -0,0 +1,58 @@
+// Responsive media queries
+
+@mixin breakpoint($breakpoint) {
+  @if $breakpoint == "" {
+    @content;
+  }
+
+  @else {
+    // Retrieves the value from the key
+    $value: map-get($breakpoints, $breakpoint);
+
+    // If the key exists in the map
+    @if $value != null {
+      // Prints a media query based on the value
+      @media (min-width: $value) {
+        @content;
+      }
+    }
+
+    // If the key doesn't exist in the map
+    @else {
+      @warn "Unfortunately, no value could be retrieved from `#{$breakpoint}`. "
+        + "Please make sure it is defined in `$breakpoints` map.";
+    }
+  }
+}
+
+// Retina media query
+
+@mixin retina-media-query {
+  @media
+    only screen and (-webkit-min-device-pixel-ratio: 2),
+    only screen and (min--moz-device-pixel-ratio: 2),
+    only screen and (-moz-min-device-pixel-ratio: 2),
+    only screen and (-o-min-device-pixel-ratio: 2/1),
+    only screen and (min-device-pixel-ratio: 2),
+    only screen and (min-resolution: 192dpi),
+    only screen and (min-resolution: 2dppx) {
+    @content;
+  }
+}
+
+// Clearfix
+//
+// Clears floats via mixin.
+
+@mixin clearfix {
+  &::before {
+    display: table;
+    content: "";
+  }
+
+  &::after {
+    display: table;
+    clear: both;
+    content: "";
+  }
+}
diff --git a/assets/_primer/support/mixins/misc.scss b/assets/_primer/support/mixins/misc.scss
new file mode 100644
index 0000000..ebdd32d
--- /dev/null
+++ b/assets/_primer/support/mixins/misc.scss
@@ -0,0 +1,29 @@
+// Generate a two-color caret for any element.
+@mixin double-caret($foreground: $text-white, $background: lighten($gray-300, 5%)) {
+  &::after,
+  &::before {
+    position: absolute;
+    top: 11px;
+    right: 100%;
+    left: -16px;
+    display: block;
+    width: 0;
+    height: 0;
+    pointer-events: none;
+    content: " ";
+    border-color: transparent;
+    border-style: solid solid outset;
+  }
+
+  &::after {
+    margin-top: 1px;
+    margin-left: 2px;
+    border-width: 7px;
+    border-right-color: $foreground;
+  }
+
+  &::before {
+    border-width: 8px;
+    border-right-color: $background;
+  }
+}
diff --git a/assets/_primer/support/mixins/typography.scss b/assets/_primer/support/mixins/typography.scss
new file mode 100644
index 0000000..23ec0e3
--- /dev/null
+++ b/assets/_primer/support/mixins/typography.scss
@@ -0,0 +1,84 @@
+// Text hiding for image based text replacement.
+// Higher performance than -9999px because it only renders
+// the size of the actual text, not a full 9999px box.
+@mixin hide-text() {
+  overflow: hidden;
+  text-indent: 100%;
+  white-space: nowrap;
+}
+
+// Heading mixins for use within components
+// These match heading utilities in utilities/typography
+@mixin h1 {
+  font-size: $h1-size;
+  font-weight: $font-weight-bold;
+}
+
+@mixin h2 {
+  font-size: $h2-size;
+  font-weight: $font-weight-bold;
+}
+
+@mixin h3 {
+  font-size: $h3-size;
+  font-weight: $font-weight-bold;
+}
+
+@mixin h4 {
+  font-size: $h4-size;
+  font-weight: $font-weight-bold;
+}
+
+@mixin h5 {
+  font-size: $h5-size;
+  font-weight: $font-weight-bold;
+}
+
+@mixin h6 {
+  font-size: $h6-size;
+  font-weight: $font-weight-bold;
+}
+
+// Responsive heading mixins
+// There are no responsive mixins for h4-h6 because they are small
+// and don't need to be smaller on mobile.
+@mixin f1-responsive {
+  font-size: $h1-size-mobile;
+
+  // 32px on desktop
+  @include breakpoint(md) { font-size: $h1-size; }
+
+}
+
+@mixin f2-responsive {
+  font-size: $h2-size-mobile;
+
+  // 24px on desktop
+  @include breakpoint(md) { font-size: $h2-size; }
+}
+
+@mixin f3-responsive {
+  font-size: $h3-size-mobile;
+
+  // 20px on desktop
+  @include breakpoint(md) { font-size: $h3-size; }
+
+}
+
+// These use the mixins from above for responsive heading sizes.
+// The following mixins can be used where it's convenient or necessary to
+// couple the responsive font-size with the font-weight.
+@mixin h1-responsive {
+  @include f1-responsive;
+  font-weight: $font-weight-bold;
+}
+
+@mixin h2-responsive {
+  @include f2-responsive;
+  font-weight: $font-weight-bold;
+}
+
+@mixin h3-responsive {
+  @include f3-responsive;
+  font-weight: $font-weight-bold;
+}
diff --git a/assets/_primer/support/variables/color-system.scss b/assets/_primer/support/variables/color-system.scss
new file mode 100644
index 0000000..febc58b
--- /dev/null
+++ b/assets/_primer/support/variables/color-system.scss
@@ -0,0 +1,243 @@
+// Black based on same hue as $gray-900
+$black: #1b1f23 !default;
+$white: #fff !default;
+
+//
+//
+// -------- Grays --------
+$gray-000:        #fafbfc !default;
+$gray-100:        #f6f8fa !default;
+$gray-200:        #e1e4e8 !default;
+$gray-300:        #d1d5da !default;
+$gray-400:        #959da5 !default;
+$gray-500:        #6a737d !default;
+$gray-600:        #586069 !default;
+$gray-700:        #444d56 !default;
+$gray-800:        #2f363d !default;
+$gray-900:        #24292e !default; // body font color
+
+// -------- Blue --------
+$blue-000:        #f1f8ff !default;
+$blue-100:        #dbedff !default;
+$blue-200:        #c8e1ff !default;
+$blue-300:        #79b8ff !default;
+$blue-400:        #2188ff !default;
+$blue-500:        #0366d6 !default; // Default: Passes AA with #fff
+$blue-600:        #005cc5 !default;
+$blue-700:        #044289 !default;
+$blue-800:        #032f62 !default;
+$blue-900:        #05264c !default; // Passes with 1/2/300 blues
+
+// -------- Green --------
+$green-000:       #f0fff4 !default;
+$green-100:       #dcffe4 !default;
+$green-200:       #bef5cb !default;
+$green-300:       #85e89d !default;
+$green-400:       #34d058 !default;
+$green-500:       #28a745 !default; // Default. passes AA Large
+$green-600:       #22863a !default; // Text green, passes AA on #fff
+$green-700:       #176f2c !default;
+$green-800:       #165c26 !default;
+$green-900:       #144620 !default;
+
+// -------- Yellow --------
+$yellow-000:      #fffdef !default;
+$yellow-100:      #fffbdd !default;
+$yellow-200:      #fff5b1 !default;
+$yellow-300:      #ffea7f !default;
+$yellow-400:      #ffdf5d !default;
+$yellow-500:      #ffd33d !default;
+$yellow-600:      #f9c513 !default;
+$yellow-700:      #dbab09 !default;
+$yellow-800:      #b08800 !default;
+$yellow-900:      #735c0f !default;
+
+// -------- Orange --------
+$orange-000:      #fff8f2 !default;
+$orange-100:      #ffebda !default;
+$orange-200:      #ffd1ac !default;
+$orange-300:      #ffab70 !default;
+$orange-400:      #fb8532 !default;
+$orange-500:      #f66a0a !default; // Default. passes AA Large with #fff
+$orange-600:      #e36209 !default;
+$orange-700:      #d15704 !default;
+$orange-800:      #c24e00 !default;
+$orange-900:      #a04100 !default;
+
+// -------- Red --------
+$red-000:         #ffeef0 !default;
+$red-100:         #ffdce0 !default;
+$red-200:         #fdaeb7 !default;
+$red-300:         #f97583 !default;
+$red-400:         #ea4a5a !default;
+$red-500:         #d73a49 !default; // Default. passes AA
+$red-600:         #cb2431 !default;
+$red-700:         #b31d28 !default;
+$red-800:         #9e1c23 !default;
+$red-900:         #86181d !default;
+
+// -------- Purple --------
+$purple-000:      #f5f0ff !default;
+$purple-100:      #e6dcfd !default;
+$purple-200:      #d1bcf9 !default;
+$purple-300:      #b392f0 !default;
+$purple-400:      #8a63d2 !default;
+$purple-500:      #6f42c1 !default; // passes AA with #fff
+$purple-600:      #5a32a3 !default;
+$purple-700:      #4c2889 !default;
+$purple-800:      #3a1d6e !default;
+$purple-900:      #29134e !default;
+
+// -------- Pink --------
+$pink-000:      #ffeef8 !default;
+$pink-100:      #fedbf0 !default;
+$pink-200:      #f9b3dd !default;
+$pink-300:      #f692ce !default;
+$pink-400:      #ec6cb9 !default;
+$pink-500:      #ea4aaa !default;
+$pink-600:      #d03592 !default;
+$pink-700:      #b93a86 !default;
+$pink-800:      #99306f !default;
+$pink-900:      #6d224f !default;
+
+// -------- Fades --------
+$black-fade-15:      rgba($black, 0.15) !default;
+$black-fade-30:      rgba($black, 0.3) !default;
+$black-fade-50:      rgba($black, 0.5) !default;
+$black-fade-70:      rgba($black, 0.7) !default;
+$black-fade-85:      rgba($black, 0.85) !default;
+
+$white-fade-15:      rgba($white, 0.15) !default;
+$white-fade-30:      rgba($white, 0.3) !default;
+$white-fade-50:      rgba($white, 0.5) !default;
+$white-fade-70:      rgba($white, 0.7) !default;
+$white-fade-85:      rgba($white, 0.85) !default;
+
+// -------- Color defaults --------
+$red:         $red-500 !default;
+$purple:      $purple-500 !default;
+$blue:        $blue-500 !default;
+$green:       $green-500 !default;
+$yellow:      $yellow-500 !default;
+$orange:      $orange-500 !default;
+
+$gray-dark:   $gray-900 !default;
+$gray-light:  $gray-400 !default;
+$gray:        $gray-500 !default;
+
+// -------- Color gradient maps --------
+
+$grays: (
+  0: $gray-000,
+  1: $gray-100,
+  2: $gray-200,
+  3: $gray-300,
+  4: $gray-400,
+  5: $gray-500,
+  6: $gray-600,
+  7: $gray-700,
+  8: $gray-800,
+  9: $gray-900,
+) !default;
+
+$blues: (
+  0: $blue-000,
+  1: $blue-100,
+  2: $blue-200,
+  3: $blue-300,
+  4: $blue-400,
+  5: $blue-500,
+  6: $blue-600,
+  7: $blue-700,
+  8: $blue-800,
+  9: $blue-900,
+) !default;
+
+$greens: (
+  0: $green-000,
+  1: $green-100,
+  2: $green-200,
+  3: $green-300,
+  4: $green-400,
+  5: $green-500,
+  6: $green-600,
+  7: $green-700,
+  8: $green-800,
+  9: $green-900,
+) !default;
+
+$yellows: (
+  0: $yellow-000,
+  1: $yellow-100,
+  2: $yellow-200,
+  3: $yellow-300,
+  4: $yellow-400,
+  5: $yellow-500,
+  6: $yellow-600,
+  7: $yellow-700,
+  8: $yellow-800,
+  9: $yellow-900,
+) !default;
+
+$oranges: (
+  0: $orange-000,
+  1: $orange-100,
+  2: $orange-200,
+  3: $orange-300,
+  4: $orange-400,
+  5: $orange-500,
+  6: $orange-600,
+  7: $orange-700,
+  8: $orange-800,
+  9: $orange-900,
+) !default;
+
+$reds: (
+  0: $red-000,
+  1: $red-100,
+  2: $red-200,
+  3: $red-300,
+  4: $red-400,
+  5: $red-500,
+  6: $red-600,
+  7: $red-700,
+  8: $red-800,
+  9: $red-900,
+) !default;
+
+$purples: (
+  0: $purple-000,
+  1: $purple-100,
+  2: $purple-200,
+  3: $purple-300,
+  4: $purple-400,
+  5: $purple-500,
+  6: $purple-600,
+  7: $purple-700,
+  8: $purple-800,
+  9: $purple-900,
+) !default;
+
+$pinks: (
+  0: $pink-000,
+  1: $pink-100,
+  2: $pink-200,
+  3: $pink-300,
+  4: $pink-400,
+  5: $pink-500,
+  6: $pink-600,
+  7: $pink-700,
+  8: $pink-800,
+  9: $pink-900,
+) !default;
+
+$hue-maps: (
+  "gray": $grays,
+  "blue": $blues,
+  "green": $greens,
+  "yellow": $yellows,
+  "orange": $oranges,
+  "red": $reds,
+  "purple": $purples,
+  "pink": $pinks,
+) !default;
diff --git a/assets/_primer/support/variables/colors.scss b/assets/_primer/support/variables/colors.scss
new file mode 100644
index 0000000..ffbf018
--- /dev/null
+++ b/assets/_primer/support/variables/colors.scss
@@ -0,0 +1,63 @@
+@import "color-system.scss";
+// Color variables
+
+// Border colors
+$border-white:       $white !default;
+$border-black-fade:  $black-fade-15 !default;
+$border-white-fade:  $white-fade-15 !default;
+$border-gray-dark:   $gray-300 !default;
+$border-gray-darker: $gray-700 !default;
+$border-gray-light:  lighten($gray-200, 3%) !default;
+$border-gray:        $gray-200 !default;
+$border-blue:        $blue-500 !default;
+$border-blue-light:  $blue-200 !default;
+$border-green:       $green-400 !default;
+$border-green-light: desaturate($green-300, 40%) !default;
+$border-purple:      $purple !default;
+$border-red:         $red !default;
+$border-red-light:   desaturate($red-300, 60%) !default;
+$border-yellow:      desaturate($yellow-300, 60%) !default;
+
+// Buttons have a slightly more opaque border than $border-black-fade (15% alpha)
+$border-color-button: rgba($black, 0.2) !default;
+
+// Background colors
+$bg-white:          $white !default;
+$bg-black:          $black !default;
+$bg-black-fade:     $black-fade-50 !default;
+$bg-blue-light:     $blue-000 !default;
+$bg-blue:           $blue-500 !default;
+$bg-gray-dark:      $gray-900 !default;
+$bg-gray-light:     $gray-000 !default;
+$bg-gray:           $gray-100 !default;
+$bg-green:          $green-500 !default;
+$bg-green-light:    $green-100 !default;
+$bg-orange:         $orange-700 !default;
+$bg-purple:         $purple-500 !default;
+$bg-purple-light:   $purple-000 !default;
+$bg-pink:           $pink-500 !default;
+$bg-red:            $red-500 !default;
+$bg-red-light:      $red-100 !default;
+$bg-yellow:         $yellow-500 !default;
+$bg-yellow-light:   $yellow-200 !default;
+$bg-yellow-dark:    $yellow-700 !default;
+
+// diffstat background colors
+$bg-diffstat-added: darken($green-400, 5%) !default;
+$bg-diffstat-deleted: $red-600 !default;
+$bg-diffstat-neutral: $gray-300 !default;
+
+// Text colors
+$text-black:        $black !default;
+$text-white:        $white !default;
+$text-blue:         $blue-500 !default;
+$text-gray-dark:    $gray-900 !default;
+$text-gray-light:   $gray-500 !default;
+$text-gray:         $gray-600 !default;
+$text-green:        $green-500 !default;
+$text-orange:       $orange-900 !default;
+$text-orange-light: $orange-600 !default;
+$text-purple:       $purple !default;
+$text-pink:         $pink-500 !default;
+$text-red:          $red-600 !default;
+$text-yellow:       $yellow-800 !default;
diff --git a/assets/_primer/support/variables/layout.scss b/assets/_primer/support/variables/layout.scss
new file mode 100644
index 0000000..cec508c
--- /dev/null
+++ b/assets/_primer/support/variables/layout.scss
@@ -0,0 +1,129 @@
+// Layout variables
+
+// these are values for the display CSS property
+$display-values: (
+  block,
+  flex,
+  inline,
+  inline-block,
+  inline-flex,
+  none,
+  table,
+  table-cell
+) !default;
+
+// maps edges to respective corners for border-radius
+$edges: (
+  top: (top-left, top-right),
+  right: (top-right, bottom-right),
+  bottom: (bottom-right, bottom-left),
+  left: (bottom-left, top-left)
+) !default;
+
+// These are our margin and padding utility spacers. The default step size we
+// use is 8px. This gives us a key of:
+//    0 => 0px
+//    1 => 4px
+//    2 => 8px
+//    3 => 16px
+//    4 => 24px
+//    5 => 32px
+//    6 => 40px
+$spacer: 8px !default;
+
+// Our spacing scale
+$spacer-0: 0 !default;                  // 0
+$spacer-1: round($spacer / 2) !default; // 4px
+$spacer-2: $spacer !default;            // 8px
+$spacer-3: $spacer * 2 !default;        // 16px
+$spacer-4: $spacer * 3 !default;        // 24px
+$spacer-5: $spacer * 4 !default;        // 32px
+$spacer-6: $spacer * 5 !default;        // 40px
+
+// The list of spacer values
+$spacers: (
+  $spacer-0,
+  $spacer-1,
+  $spacer-2,
+  $spacer-3,
+  $spacer-4,
+  $spacer-5,
+  $spacer-6,
+) !default;
+
+// And the map of spacers, for easier looping:
+// @each $scale, $length in $spacer-map { ... }
+$spacer-map: (
+  0: $spacer-0,
+  1: $spacer-1,
+  2: $spacer-2,
+  3: $spacer-3,
+  4: $spacer-4,
+  5: $spacer-5,
+  6: $spacer-6,
+) !default;
+
+// Em spacer variables
+$em-spacer-1: 0.0625em !default; // 1/16
+$em-spacer-2: 0.125em !default;  // 1/8
+$em-spacer-3: 0.25em !default;   // 1/4
+$em-spacer-4: 0.375em !default;  // 3/8
+$em-spacer-5: 0.5em !default;    // 1/2
+$em-spacer-6: 0.75em !default;   // 3/4
+
+// Fixed-width container variables
+$container-width: 980px !default;
+$grid-gutter:     10px !default;
+
+// Breakpoint widths
+$width-xs: 0 !default;
+// Small screen / phone
+$width-sm: 544px !default;
+// Medium screen / tablet
+$width-md: 768px !default;
+// Large screen / desktop (980 + (16 * 2)) <= container + gutters
+$width-lg: 1012px !default;
+// Extra large screen / wide desktop
+$width-xl: 1280px !default;
+
+// Responsive container widths
+$container-sm: $width-sm !default;
+$container-md: $width-md !default;
+$container-lg: $width-lg !default;
+$container-xl: $width-xl !default;
+
+// Breakpoints in the form (name: length)
+$breakpoints: (
+  sm: $width-sm,
+  md: $width-md,
+  lg: $width-lg,
+  xl: $width-xl
+) !default;
+
+// This map in the form (breakpoint: variant) is used to iterate over
+// breakpoints and create both responsive and non-responsive classes in one
+// loop:
+//
+// ```scss
+// @each $breakpoint, $variant of $responsive-variants {
+//   @include breakpoint($breakpoint) {
+//     .foo#{$variant}-bar { foo: bar !important; }
+//   }
+// }
+// ```
+$responsive-variants: (
+  "": "",
+  sm: "-sm",
+  md: "-md",
+  lg: "-lg",
+  xl: "-xl",
+) !default;
+
+// responive utility position values
+$responsive-positions: (
+  static,
+  relative,
+  absolute,
+  fixed,
+  sticky
+) !default;
diff --git a/assets/_primer/support/variables/misc.scss b/assets/_primer/support/variables/misc.scss
new file mode 100644
index 0000000..30a8363
--- /dev/null
+++ b/assets/_primer/support/variables/misc.scss
@@ -0,0 +1,26 @@
+// Miscellaneous variables
+
+// Border size
+$border-width: 1px !default;
+$border-color: $border-gray !default;
+$border-style: solid !default;
+$border: $border-width $border-color $border-style !default;
+$border-radius: 3px !default;
+
+// Box shadow
+$box-shadow: 0 1px 1px rgba($black, 0.1) !default;
+$box-shadow-medium: 0 1px 5px $black-fade-15 !default;
+$box-shadow-large: 0 1px 15px $black-fade-15 !default;
+$box-shadow-extra-large: 0 10px 50px rgba($black, 0.07) !default;
+
+// Button and form variables
+$form-control-shadow: inset 0 1px 2px rgba($black, 0.075) !default;
+$btn-input-focus-shadow: 0 0 0 0.2em rgba($blue, 0.3) !default;
+$btn-active-shadow: inset 0 0.15em 0.3em $black-fade-15 !default;
+
+// Tooltips
+$tooltip-max-width: 250px !default;
+$tooltip-background-color: $black !default;
+$tooltip-text-color: $white !default;
+$tooltip-delay: 0.4s !default;
+$tooltip-duration: 0.1s !default;
diff --git a/assets/_primer/support/variables/typography.scss b/assets/_primer/support/variables/typography.scss
new file mode 100644
index 0000000..dcb57a7
--- /dev/null
+++ b/assets/_primer/support/variables/typography.scss
@@ -0,0 +1,42 @@
+// Typography variables
+
+// Heading sizes - mobile
+// h4-h6 remain the same size on both mobile & desktop
+$h00-size-mobile: 40px !default;
+$h0-size-mobile: 32px !default;
+$h1-size-mobile: 26px !default;
+$h2-size-mobile: 22px !default;
+$h3-size-mobile: 18px !default;
+
+// Heading sizes - desktop
+$h00-size: 48px !default;
+$h0-size: 40px !default;
+$h1-size: 32px !default;
+$h2-size: 24px !default;
+$h3-size: 20px !default;
+$h4-size: 16px !default;
+$h5-size: 14px !default;
+$h6-size: 12px !default;
+
+$font-size-small: 12px !default;
+
+// Font weights
+$font-weight-bold: 600 !default;
+$font-weight-semibold: 500 !default;
+$font-weight-normal: 400 !default;
+$font-weight-light: 300 !default;
+
+// Line heights
+$lh-condensed-ultra: 1 !default;
+$lh-condensed: 1.25 !default;
+$lh-default: 1.5 !default;
+
+// Font stacks
+$body-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji" !default;
+
+// Monospace font stack
+$mono-font: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace !default;
+
+// The base body size
+$body-font-size: 14px !default;
+$body-line-height: $lh-default !default;