--- /dev/null
+// Foundation for Apps
+//
+// BREAKPOINTS
+// -----------
+// Foundation for Apps has three core breakpoints: small (> 0), medium (>= 640), and large (>= 1024).
+// There are two additional breakpoints, xlarge, and xxlarge, which (by default) do not output as sizing classes.
+// Access named breakpoints using the mixin breakpoint($size), where $size is a breakpoint value.
+// You can also pass an em, rem, or pixel value into this mixin to generate an em-based media query.
+// Create new named breakpoints using the $breakpoints map. Change which named breakpoints get their own classes by modifying the $breakpoint-classes map.
+// NOTE: If you change the $breakpoints map, know that all values must be ordered by width, smallest width first. So 0 is always your first value.
+
+// 1. Variables
+// - - - - - - - - - - - - - - -
+
+/// @Foundation.settings
+// Breakpoints
+// These are our named breakpoints. You can use them in our breakpoint function like this: @include breakpoint(medium) { // Medium and larger styles }
+$breakpoints: (
+ small: rem-calc(0),
+ medium: rem-calc(640),
+ large: rem-calc(1200),
+ xlarge: rem-calc(1440),
+ xxlarge: rem-calc(1920),
+) !default;
+
+// All of the names in this list will be output as classes in your CSS, like small-12, medium-6, and so on.
+$breakpoint-classes: (small medium large) !default;
+///
+
+// 2. Mixins
+// - - - - - - - - - - - - - - -
+
+/// Wraps a media query around the content you put inside the mixin. This mixin accepts a number of values:
+/// - If a string is passed, the mixin will look for it in the $breakpoints map, and use a media query there.
+/// - If a pixel value is passed, it will be converted to an em value using $rem-base.
+/// - If a rem value is passed, the unit will be changed to em.
+/// - If an em value is passed, the value will be used as-is.
+///
+/// @param {mixed} $val - Breakpoint name or px/em/rem value to process.
+///
+/// @output If the breakpoint is "0px and larger", outputs the content. Otherwise, outputs the content wrapped in a media query.
+@mixin breakpoint($val: small) {
+ // Size or keyword
+ $bp: nth($val, 1);
+ // Value for max-width media queries
+ $bpMax: 0;
+ // Direction of media query (up, down, or only)
+ $dir: if(length($val) > 1, nth($val, 2), up);
+ // Eventual output
+ $str: 'only screen';
+ // Is it a named media query?
+ $named: false;
+
+ // Orientation media queries have a unique syntax
+ @if $bp == 'landscape' or $bp == 'portrait' {
+ $str: $str + ' and (orientation: #{$bp})';
+ }
+
+ @else {
+ // Try to pull a named breakpoint out of the $breakpoints map
+ @if type-of($bp) == 'string' {
+ @if map-has-key($breakpoints, $bp) {
+ @if $dir == 'only' {
+ $next-bp: map-next($breakpoints, $bp);
+ @if $next-bp == null {
+ $bpMax: null;
+ }
+ @else {
+ $bpMax: $next-bp - (1/16);
+ }
+ }
+ $bp: map-get($breakpoints, $bp);
+ $named: true;
+ }
+ @else {
+ $bp: 0;
+ }
+ }
+
+ // Pixel and unitless values are converted to rems
+ @if unit($bp) == 'px' or unit($bp) == '' {
+ $bp: rem-calc($bp);
+ }
+ // Finally, the rem value is turned into an em value
+ $bp: strip-unit($bp) * 1em;
+
+ // Skip media query creation if the input is "0 up" or "0 down"
+ @if $bp > 0 or $dir == 'only' {
+ // And lo, a media query was born
+ @if $dir == 'only' {
+ @if $named == true {
+ $str: $str + ' and (min-width: #{$bp})';
+ @if $bpMax != null {
+ $str: $str + ' and (max-width: #{$bpMax})';
+ }
+ }
+ @else {
+ @debug 'ERROR: Only named media queries can have an "only" range.';
+ }
+ }
+ @else if $dir == 'down' {
+ $max: $bp - (1/16);
+ $str: $str + ' and (max-width: #{$max})';
+ }
+ @else {
+ $str: $str + ' and (min-width: #{$bp})';
+ }
+ }
+ }
+
+ // Output
+ @if $bp == 0em and $dir != 'only' {
+ @content;
+ }
+ @else {
+ @media #{$str} {
+ @content;
+ }
+ }
+}
+
+/// Prefixes selector $class with breakpoint keywords, allowing you to create a batch of breakpoint classes with one chunk of code. If you want to skip a breakpoint (like small, because mobile first and all that), add values to the $omit parameter.
+///
+/// @param {string} $class - Class to prefix with the breakpoint name and a hyphen.
+/// @param {list} $omit - Named breakpoints to skip. No class will be added with breakpoints in this list.
+@mixin each-breakpoint($class, $omit: ()) {
+ // Iterate through breakpoint classes
+ @each $size in $breakpoint-classes {
+ // Only do something if the breakpoint is not in $omit
+ @if index($omit, $size) == null {
+ $val: map-get($breakpoints, $size);
+ // Prefix $class with $size and a hyphen
+ .#{$size + '-' + $class} {
+ @include breakpoint($size) {
+ @content;
+ }
+ }
+ }
+ }
+}
+
+// 3. CSS Output
+// - - - - - - - - - - - - - - -
+
+// Meta styles are included in all builds, as they are a dependancy of the Javascript.
+// Used to provide media query values for javascript components.
+// Forward slash placed around everything to convince PhantomJS to read the value.
+
+meta.foundation-version {
+ font-family: "#{$foundation-version}";
+}
+meta.foundation-mq {
+ font-family: "#{map-serialize($breakpoints)}";
+}
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