Fix imports

sass/utilities/controls.sass

@@ -1,3 +1,6 @@
+@import "./mixins.sass"
+@import "./variables.sass"
+
 =control
   -moz-appearance: none
   -webkit-appearance: none

sass/utilities/mixins.sass

@@ -57,6 +57,12 @@
   text-indent: -290486px
   width: $width
 
+// Responsiveness
+
+$tablet: 769px !default
+$desktop: 980px !default
+$widescreen: 1180px !default
+
 =from($device)
   @media screen and (min-width: $device)
     @content

sass/utilities/variables.sass

@@ -1,3 +1,5 @@
+@import "./functions.sass"
+
 // 1. Initial variables
 
 // Colors
@@ -37,12 +39,6 @@ $weight-bold: 700 !default
 $weight-title-normal: 300 !default
 $weight-title-bold: 500 !default
 
-// Breakpoints
-
-$tablet: 769px !default
-$desktop: 980px !default
-$widescreen: 1180px !default
-
 // Dimensions
 
 $column-gap: 20px !default