picocss/scss/content/_button.scss

@use "sass:map";
@use "../settings" as *;

@if map.get($modules, "content/button") {
  /**
   * Button
   */

  // Reboot based on :
  // - normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css
  // - sanitize.css v13.0.0 | CC0 1.0 Universal | github.com/csstools/sanitize.css
  // ––––––––––––––––––––

  // 1. Change the font styles in all browsers
  // 2. Remove the margin on controls in Safari
  // 3. Show the overflow in Edge
  button {
    margin: 0; // 2
    overflow: visible; // 3
    font-family: inherit; // 1
    text-transform: none; // 1
  }

  // Correct the inability to style buttons in iOS and Safari
  button,
  [type="submit"],
  input[type="reset"],
  input[type="button"] {
    -webkit-appearance: button;
  }

  // Pico
  // ––––––––––––––––––––

  button,
  [type="submit"],
  input[type="reset"],
  input[type="button"],
  input[type="file"]::file-selector-button,
  [role="button"] {
    #{$✨}background-color: var(#{$✨}primary-background);
    #{$✨}border-color: var(#{$✨}primary-border);
    #{$✨}color: var(#{$✨}primary-inverse);
    #{$✨}box-shadow: var(#{$✨}button-box-shadow, 0 0 0 rgba(0, 0, 0, 0));
    padding: var(#{$✨}form-element-spacing-vertical) var(#{$✨}form-element-spacing-horizontal);
    border: var(#{$✨}border-width) solid var(#{$✨}border-color);
    border-radius: var(#{$✨}border-radius);
    outline: none;
    background-color: var(#{$✨}background-color);
    box-shadow: var(#{$✨}box-shadow);
    color: var(#{$✨}color);
    font-weight: var(#{$✨}font-weight);
    font-size: 1rem;
    line-height: var(#{$✨}line-height);
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    user-select: none;

    @if $enable-transitions {
      transition: background-color var(#{$✨}transition), border-color var(#{$✨}transition),
        color var(#{$✨}transition), box-shadow var(#{$✨}transition);
    }

    &:is([aria-current], :hover, :active, :focus) {
      #{$✨}background-color: var(#{$✨}primary-background-hover);
      #{$✨}border-color: var(#{$✨}primary-border-hover);
      #{$✨}box-shadow: var(#{$✨}button-hover-box-shadow, 0 0 0 rgba(0, 0, 0, 0));
      #{$✨}color: var(#{$✨}primary-inverse);
    }

    &:focus {
      #{$✨}box-shadow: var(#{$✨}button-hover-box-shadow, 0 0 0 rgba(0, 0, 0, 0)),
        0 0 0 var(#{$✨}outline-width) var(#{$✨}primary-focus);
    }
  }

  [type="submit"],
  input[type="reset"],
  input[type="button"] {
    margin-bottom: var(#{$✨}spacing);
  }

  // .secondary, .contrast & .outline
  @if $enable-classes {
    // Secondary
    :is(button, [type="submit"], input[type="button"], [role="button"]).secondary,
    input[type="reset"],
    input[type="file"]::file-selector-button {
      #{$✨}background-color: var(#{$✨}secondary-background);
      #{$✨}border-color: var(#{$✨}secondary-border);
      #{$✨}color: var(#{$✨}secondary-inverse);
      cursor: pointer;

      &:is([aria-current], :hover, :active, :focus) {
        #{$✨}background-color: var(#{$✨}secondary-background-hover);
        #{$✨}border-color: var(#{$✨}secondary-border-hover);
        #{$✨}color: var(#{$✨}secondary-inverse);
      }

      &:focus {
        #{$✨}box-shadow: var(#{$✨}button-hover-box-shadow, 0 0 0 rgba(0, 0, 0, 0)),
          0 0 0 var(#{$✨}outline-width) var(#{$✨}secondary-focus);
      }
    }

    // Contrast
    :is(button, [type="submit"], input[type="button"], [role="button"]).contrast {
      #{$✨}background-color: var(#{$✨}contrast-background);
      #{$✨}border-color: var(#{$✨}contrast-border);
      #{$✨}color: var(#{$✨}contrast-inverse);

      &:is([aria-current], :hover, :active, :focus) {
        #{$✨}background-color: var(#{$✨}contrast-background-hover);
        #{$✨}border-color: var(#{$✨}contrast-border-hover);
        #{$✨}color: var(#{$✨}contrast-inverse);
      }

      &:focus {
        #{$✨}box-shadow: var(#{$✨}button-hover-box-shadow, 0 0 0 rgba(0, 0, 0, 0)),
          0 0 0 var(#{$✨}outline-width) var(#{$✨}contrast-focus);
      }
    }

    // Outline (primary)
    :is(button, [type="submit"], input[type="button"], [role="button"]).outline,
    input[type="reset"].outline {
      #{$✨}background-color: transparent;
      #{$✨}color: var(#{$✨}primary);
      #{$✨}border-color: currentColor;

      &:is([aria-current], :hover, :active, :focus) {
        #{$✨}background-color: transparent;
        #{$✨}color: var(#{$✨}primary-hover);
      }
    }

    // Outline (secondary)
    :is(button, [type="submit"], input[type="button"], [role="button"]).outline.secondary,
    input[type="reset"].outline {
      #{$✨}color: var(#{$✨}secondary);
      #{$✨}border-color: currentColor;

      &:is([aria-current], :hover, :active, :focus) {
        #{$✨}color: var(#{$✨}secondary-hover);
      }
    }

    // Outline (contrast)
    :is(button, [type="submit"], input[type="button"], [role="button"]).outline.contrast {
      #{$✨}color: var(#{$✨}contrast);

      &:is([aria-current], :hover, :active, :focus) {
        #{$✨}color: var(#{$✨}contrast-hover);
      }
    }
  } @else {
    // Secondary button without .class
    input[type="reset"],
    input[type="file"]::file-selector-button {
      #{$✨}background-color: var(#{$✨}secondary);
      #{$✨}border-color: var(#{$✨}secondary);
      #{$✨}color: var(#{$✨}secondary-inverse);
      cursor: pointer;

      &:is([aria-current], :hover, :active, :focus) {
        #{$✨}background-color: var(#{$✨}secondary-hover);
        #{$✨}border-color: var(#{$✨}secondary-hover);
      }

      &:focus {
        #{$✨}box-shadow: var(#{$✨}button-hover-box-shadow, 0 0 0 rgba(0, 0, 0, 0)),
          0 0 0 var(#{$✨}outline-width) var(#{$✨}secondary-focus);
      }
    }
  }

  // Button [disabled]
  :where(
      button,
      [type="submit"],
      input[type="reset"],
      input[type="button"],
      [role="button"]
    )[disabled],
  :where(fieldset[disabled])
    :is(button, [type="submit"], input[type="button"], input[type="reset"], [role="button"]) {
    opacity: 0.5;
    pointer-events: none;
  }
}