node_modules/@angular/material/button-toggle/_button-toggle-theme.scss

@import '../../cdk/a11y/a11y';
@import '../core/style/private';
@import '../core/theming/palette';
@import '../core/theming/theming';
@import '../core/typography/typography-utils';
@import '../core/density/private/compatibility';
@import './button-toggle-variables';

@mixin mat-button-toggle-color($config-or-theme) {
  $config: mat-get-color-config($config-or-theme);
  $foreground: map-get($config, foreground);
  $background: map-get($config, background);
  $divider-color: mat-color($foreground, divider);

  .mat-button-toggle-standalone,
  .mat-button-toggle-group {
    @include mat-private-theme-elevation(2, $config);
  }

  .mat-button-toggle-standalone.mat-button-toggle-appearance-standard,
  .mat-button-toggle-group-appearance-standard {
    box-shadow: none;
  }

  .mat-button-toggle {
    color: mat-color($foreground, hint-text);

    .mat-button-toggle-focus-overlay {
      background-color: mat-color($background, focused-button);
    }
  }

  .mat-button-toggle-appearance-standard {
    color: mat-color($foreground, text);
    background: mat-color($background, card);

    .mat-button-toggle-focus-overlay {
      background-color: mat-color($background, focused-button, 1);
    }
  }

  .mat-button-toggle-group-appearance-standard .mat-button-toggle + .mat-button-toggle {
    border-left: solid 1px $divider-color;
  }

  [dir='rtl'] .mat-button-toggle-group-appearance-standard .mat-button-toggle + .mat-button-toggle {
    border-left: none;
    border-right: solid 1px $divider-color;
  }

  .mat-button-toggle-group-appearance-standard.mat-button-toggle-vertical {
    .mat-button-toggle + .mat-button-toggle {
      border-left: none;
      border-right: none;
      border-top: solid 1px $divider-color;
    }
  }

  .mat-button-toggle-checked {
    background-color: mat-color($background, selected-button);
    color: mat-color($foreground, secondary-text);

    &.mat-button-toggle-appearance-standard {
      color: mat-color($foreground, text);
    }
  }

  .mat-button-toggle-disabled {
    color: mat-color($foreground, disabled-button);
    background-color: mat-color($background, disabled-button-toggle);

    &.mat-button-toggle-appearance-standard {
      background: mat-color($background, card);
    }

    &.mat-button-toggle-checked {
      background-color: mat-color($background, selected-disabled-button);
    }
  }

  .mat-button-toggle-standalone.mat-button-toggle-appearance-standard,
  .mat-button-toggle-group-appearance-standard {
    border: solid 1px $divider-color;
  }
}

@mixin mat-button-toggle-typography($config-or-theme) {
  $config: mat-get-typography-config($config-or-theme);
  .mat-button-toggle {
    font-family: mat-font-family($config);
  }
}

@mixin mat-button-toggle-density($config-or-theme) {
  $density-scale: mat-get-density-config($config-or-theme);
  $standard-height: mat-private-density-prop-value(
      $mat-button-toggle-standard-density-config, $density-scale, height);

  @include mat-private-density-legacy-compatibility() {
    .mat-button-toggle-appearance-standard .mat-button-toggle-label-content {
      line-height: $standard-height;
    }
  }
}

@mixin mat-button-toggle-theme($theme-or-color-config) {
  $theme: mat-private-legacy-get-theme($theme-or-color-config);
  @include mat-private-check-duplicate-theme-styles($theme, 'mat-button-toggle') {
    $color: mat-get-color-config($theme);
    $density: mat-get-density-config($theme);
    $typography: mat-get-typography-config($theme);

    @if $color != null {
      @include mat-button-toggle-color($color);
    }
    @if $density != null {
      @include mat-button-toggle-density($density);
    }
    @if $typography != null {
      @include mat-button-toggle-typography($typography);
    }
  }
}