// ----------------------------------------------------------------------------------------------------
// Mixins
// ----------------------------------------------------------------------------------------------------

/**
 * Better font rendering (on OS X)
 * http://maximilianhoffmann.com/posts/better-font-rendering-on-osx
 *
 * Usage:
 *
 * .var-dark-on-light {
 * 	@include fontSmoothing;
 * }
 * .var-light-on-dark {
 * 	@include fontSmoothingReset;
 * }
 */

@mixin fontSmoothing() {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@mixin fontSmoothingReset() {
  -webkit-font-smoothing: subpixel-antialiased;
  -moz-osx-font-smoothing: auto;
}

// Typo Styles
// ----------------------------------------------------------------------------------------------------

@mixin ellipsis() {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

@mixin absoluteCenterXY() {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

@mixin absoluteCenterX() {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

@mixin absoluteCenterY() {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

/**
 * Display content for screen reader only.
 * Copied from angular/components .cdk-visually-hidden, in order
 * to apply it to a class conditionally.
 */
@mixin sbbVisuallyHidden() {
  border: 0;
  clip: rect(0 0 0 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;

  // This works around a Chrome bug that can cause the tab to crash when large amounts of
  // non-English text get wrapped: https://bugs.chromium.org/p/chromium/issues/detail?id=1201444
  white-space: nowrap;

  // Avoid browsers rendering the focus ring in some cases.
  outline: 0;

  // Avoid some cases where the browser will still render the native controls (see #9049).
  -webkit-appearance: none;
  -moz-appearance: none;

  // We need at least one of top/bottom/left/right in order to prevent cases where the
  // absolute-positioned element is pushed down and can affect scrolling (see angular/components#24597).
  // `left` was chosen here, because it's the least likely to break overrides where the
  // element might have been positioned (e.g. `sbb-checkbox`).
  left: 0;

  [dir='rtl'] & {
    left: auto;
    right: 0;
  }
}

@mixin buttonReset() {
  background: none;
  max-width: none;
  min-width: 0;
  padding: 0;
  margin: 0;
}

@mixin buttonResetFrameless() {
  @include buttonReset();
  border: none;
}

// ----------------------------------------------------------------------------------------------------
// Sbb Menu
// ----------------------------------------------------------------------------------------------------

@mixin borderLeftAsBefore($color, $width) {
  &::before {
    content: '';
    position: absolute;
    height: 100%;
    width: $width;
    left: 0;
    top: 0;
    background-color: $color;
  }
}

@mixin borderRightAsBefore($color, $width) {
  @include borderLeftAsBefore($color, $width);
  &::before {
    left: unset;
    right: 0;
  }
}

@mixin sbbMenuItemBlackLean($width: var(--sbb-border-width-thin), $left: true) {
  color: var(--sbb-menu-item-label-active);
  background-color: var(--sbb-menu-item-background-color-active);
  @if $left {
    @include borderLeftAsBefore(var(--sbb-menu-item-label-active), $width);
  } @else {
    @include borderRightAsBefore(var(--sbb-menu-item-label-active), $width);
  }
}

@mixin sbbMenuItemRedLean($width: var(--sbb-border-width-thin)) {
  color: var(--sbb-color-call-to-action-hover);
  background-color: var(--sbb-menu-item-background-color-hover);
  @include borderLeftAsBefore(var(--sbb-color-call-to-action-hover), $width);
}

@mixin sbbAbsoluteFill() {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}

@mixin sbbFocusOutline() {
  outline: var(--sbb-border-width-thin) solid var(--sbb-color-weak-accent);
  outline-offset: var(--sbb-border-width-thin-negative);
}

@mixin user-select($value) {
  -webkit-user-select: $value;
  user-select: $value;
}

@mixin expansionPanelBorderBottom() {
  content: '';
  display: block;
  position: absolute;
  height: 0;
  bottom: 0;
  width: calc(
    100% - var(--sbb-expansion-panel-padding-horizontal) * 2 + var(--sbb-border-width-thin) * 2
  );
  left: calc(var(--sbb-expansion-panel-padding-horizontal) - var(--sbb-border-width-thin));
  border-bottom: var(--sbb-border-width-thin) solid var(--sbb-expansion-panel-border-color-open);
}