node_modules/@angular/material/bottom-sheet/_bottom-sheet-theme.scss

@import '../core/style/private';
@import '../core/typography/typography-utils';
@import '../core/theming/palette';
@import '../core/theming/theming';

@mixin mat-bottom-sheet-color($config-or-theme) {
  $config: mat-get-color-config($config-or-theme);
  $background: map-get($config, background);
  $foreground: map-get($config, foreground);

  .mat-bottom-sheet-container {
    @include mat-private-theme-elevation(16, $config);
    background: mat-color($background, dialog);
    color: mat-color($foreground, text);
  }
}

@mixin mat-bottom-sheet-typography($config-or-theme) {
  $config: mat-get-typography-config($config-or-theme);
  .mat-bottom-sheet-container {
    @include mat-typography-level-to-styles($config, body-1);
  }
}

@mixin _mat-bottom-sheet-density($config-or-theme) {}

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

    @if $color != null {
      @include mat-bottom-sheet-color($color);
    }
    @if $density != null {
      @include _mat-bottom-sheet-density($density);
    }
    @if $typography != null {
      @include mat-bottom-sheet-typography($typography);
    }
  }
}