tabler/core/scss/bootstrap/_buttons.scss

//
// Base styles
//

@use '../config' as *;

.btn {
  // scss-docs-start btn-css-vars
  --btn-padding-x: #{$btn-padding-x};
  --btn-padding-y: #{$btn-padding-y};
  --btn-font-family: #{$btn-font-family};
  @include rfs($btn-font-size, --btn-font-size);
  --btn-font-weight: #{$btn-font-weight};
  --btn-line-height: #{$btn-line-height};
  --btn-color: #{$btn-color};
  --btn-bg: transparent;
  --btn-border-width: #{$btn-border-width};
  --btn-border-color: transparent;
  --btn-border-radius: #{$btn-border-radius};
  --btn-hover-color: var(--btn-color);
  --btn-active-color: var(--btn-color);
  --btn-hover-border-color: transparent;
  --btn-box-shadow: #{$btn-box-shadow};
  --btn-disabled-opacity: #{$btn-disabled-opacity};
  // Disabled reuses the button's own colors, dimmed by the opacity above.
  // Without these the `:disabled` rule reads tokens only the color variants
  // set, so a plain button fell back to `currentColor` for the border.
  --btn-disabled-color: var(--btn-color);
  --btn-disabled-bg: var(--btn-bg);
  --btn-disabled-border-color: var(--btn-border-color);
  // Zero-size shadow, not `none`: the active state is combined with the focus
  // ring in one `box-shadow` list, where `none` would negate every other shadow
  --btn-active-shadow: 0 0 0 #000;
  // scss-docs-end btn-css-vars

  display: inline-block;
  padding: var(--btn-padding-y) var(--btn-padding-x);
  font-family: var(--btn-font-family);
  @include font-size(var(--btn-font-size));
  font-weight: var(--btn-font-weight);
  line-height: var(--btn-line-height);
  color: var(--btn-color);
  text-align: center;
  text-decoration: if(sass($link-decoration == none): null; else: none);
  white-space: $btn-white-space;
  vertical-align: middle;
  cursor: if(sass($enable-button-pointers): pointer; else: null);
  user-select: none;
  border: var(--btn-border-width) solid var(--btn-border-color);
  @include border-radius(var(--btn-border-radius));
  @include gradient-bg(var(--btn-bg));
  @include box-shadow(var(--btn-box-shadow));
  @include transition($btn-transition);
  // Start the focus ring's `outline-color` transition from transparent, not `currentcolor`.
  outline-color: transparent;

  &:hover {
    color: var(--btn-hover-color);
    text-decoration: if(sass($link-hover-decoration == underline): none; else: null);
    background-color: var(--btn-hover-bg);
    border-color: var(--btn-hover-border-color);
  }

  .btn-check + &:hover {
    // override for the checkbox/radio buttons
    color: var(--btn-color);
    background-color: var(--btn-bg);
    border-color: var(--btn-border-color);
  }

  &:focus-visible {
    color: var(--btn-hover-color);
    @include gradient-bg(var(--btn-hover-bg));
    border-color: var(--btn-hover-border-color);
    @include focus-ring(true);
  }

  .btn-check:focus-visible + & {
    border-color: var(--btn-hover-border-color);
    @include focus-ring(true);
  }

  .btn-check:checked + &,
  :not(.btn-check) + &:active,
  &:first-child:active,
  &.active,
  &.show {
    color: var(--btn-active-color);
    background-color: var(--btn-active-bg);
    // Remove CSS gradients if they're enabled
    background-image: if(sass($enable-gradients): none; else: null);
    border-color: var(--btn-active-border-color);
    @include box-shadow(var(--btn-active-shadow));
  }

  &:disabled,
  &.disabled,
  fieldset:disabled & {
    color: var(--btn-disabled-color);
    pointer-events: none;
    background-color: var(--btn-disabled-bg);
    background-image: if(sass($enable-gradients): none; else: null);
    border-color: var(--btn-disabled-border-color);
    opacity: var(--btn-disabled-opacity);
    @include box-shadow(none);
  }
}

//
// Alternate buttons
//

// scss-docs-start btn-variant-loops
@each $color, $value in $theme-colors {
  .btn-#{$color} {
    @if $color == 'light' {
      @include button-variant(
        $value,
        $value,
        $hover-background: shade-color($value, $btn-hover-bg-shade-amount),
        $hover-border: shade-color($value, $btn-hover-border-shade-amount),
        $active-background: shade-color($value, $btn-active-bg-shade-amount),
        $active-border: shade-color($value, $btn-active-border-shade-amount)
      );
    } @else if $color == 'dark' {
      @include button-variant($value, $value, $hover-background: tint-color($value, $btn-hover-bg-tint-amount), $hover-border: tint-color($value, $btn-hover-border-tint-amount), $active-background: tint-color($value, $btn-active-bg-tint-amount), $active-border: tint-color($value, $btn-active-border-tint-amount));
    } @else {
      @include button-variant($value, $value);
    }
  }
}

@each $color, $value in $theme-colors {
  .btn-outline-#{$color} {
    @include button-outline-variant($value);
  }
}
// scss-docs-end btn-variant-loops

//
// Link buttons
//

// Make a button look and behave like a link
.btn-link {
  --btn-font-weight: #{$font-weight-normal};
  --btn-color: #{$btn-link-color};
  --btn-bg: transparent;
  --btn-border-color: transparent;
  --btn-hover-color: #{$btn-link-hover-color};
  --btn-hover-border-color: transparent;
  --btn-active-color: #{$btn-link-hover-color};
  --btn-active-border-color: transparent;
  --btn-disabled-color: #{$btn-link-disabled-color};
  --btn-disabled-border-color: transparent;
  --btn-box-shadow: 0 0 0 #000; // Can't use `none` as keyword negates all values when used with multiple shadows

  text-decoration: $link-decoration;
  @if $enable-gradients {
    background-image: none;
  }

  &:hover,
  &:focus-visible {
    text-decoration: $link-hover-decoration;
  }

  &:focus-visible {
    color: var(--btn-color);
  }

  &:hover {
    color: var(--btn-hover-color);
  }

  // No need for an active state here
}

//
// Button Sizes
//

.btn-lg {
  @include button-size($btn-padding-y-lg, $btn-padding-x-lg, $btn-font-size-lg, $btn-border-radius-lg);
}

.btn-sm {
  @include button-size($btn-padding-y-sm, $btn-padding-x-sm, $btn-font-size-sm, $btn-border-radius-sm);
}