material-web/button/internal/_shared.scss

//
// Copyright 2021 Google LLC
// SPDX-License-Identifier: Apache-2.0
//

// go/keep-sorted start
@use 'sass:map';
// go/keep-sorted end
// go/keep-sorted start
@use '../../focus/focus-ring';
@use '../../ripple/ripple';
// go/keep-sorted end

@mixin styles() {
  :host {
    display: inline-flex;
    outline: none;
    -webkit-tap-highlight-color: transparent;
    // Override vertical-align with shortest value "top". Vertical-align's
    // default "baseline" value causes buttons to be misaligned next to each
    // other if one button has an icon and the other does not.
    vertical-align: top;

    @include ripple.theme(
      (
        hover-color: var(--_hover-state-layer-color),
        pressed-color: var(--_pressed-state-layer-color),
        hover-opacity: var(--_hover-state-layer-opacity),
        pressed-opacity: var(--_pressed-state-layer-opacity),
      )
    );
  }

  md-focus-ring {
    @include focus-ring.theme(
      (
        'shape-start-start': var(--_container-shape-start-start),
        'shape-start-end': var(--_container-shape-start-end),
        'shape-end-end': var(--_container-shape-end-end),
        'shape-end-start': var(--_container-shape-end-start),
      )
    );
  }

  :host([disabled]) {
    cursor: default;
    pointer-events: none;
  }

  .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    min-inline-size: 64px;
    border: none;
    outline: none;
    user-select: none;
    -webkit-appearance: none;
    vertical-align: middle;
    background: transparent;
    text-decoration: none;
    inline-size: 100%;
    position: relative;
    z-index: 0; // Place content on top of elevation and ripple
    block-size: var(--_container-height);
    font: var(--_label-text-type);
    color: var(--_label-text-color);
    // TODO(b/181413732): Verify token below are named correctly
    padding-inline-start: var(--_spacing-leading);
    padding-inline-end: var(--_spacing-trailing);
    gap: 8px;

    &::before {
      // Background color. Separate node for disabled opacity styles.
      background-color: var(--_container-color);
      border-radius: inherit;
      content: '';
      inset: 0;
      position: absolute;
    }

    &::-moz-focus-inner {
      padding: 0;
      border: 0;
    }

    &:hover {
      color: var(--_hover-label-text-color);
      cursor: pointer;
    }

    &:focus {
      color: var(--_focus-label-text-color);
    }

    &:active {
      color: var(--_pressed-label-text-color);
      outline: none;
    }

    &:disabled .button__label {
      color: var(--_disabled-label-text-color);
      opacity: var(--_disabled-label-text-opacity);
    }

    &:disabled::before {
      background-color: var(--_disabled-container-color);
      opacity: var(--_disabled-container-opacity);
    }

    @media (forced-colors: active) {
      &::before {
        content: '';
        box-sizing: border-box;
        border: 1px solid transparent;
        border-radius: inherit;
        inset: 0;
        pointer-events: none;
        position: absolute;
      }
    }
  }

  .button,
  .button__ripple {
    border-start-start-radius: var(--_container-shape-start-start);
    border-start-end-radius: var(--_container-shape-start-end);
    border-end-start-radius: var(--_container-shape-end-start);
    border-end-end-radius: var(--_container-shape-end-end);
  }

  .button::after,
  .button::before,
  md-elevation,
  .button__ripple {
    z-index: -1; // Place behind content
  }

  // TODO(b/181413732): Verify token below are named correctly
  .button--icon-leading {
    padding-inline-start: var(--_with-icon-spacing-leading);
    padding-inline-end: var(--_with-icon-spacing-trailing);
  }

  .button--icon-trailing {
    padding-inline-start: var(--_with-trailing-icon-spacing-leading);
    padding-inline-end: var(--_with-trailing-icon-spacing-trailing);
  }

  .link-button-wrapper {
    inline-size: 100%;
  }
}