//
// Base styles
//

.btn {
  // scss-docs-start btn-css-vars
  --#{$prefix}btn-padding-x: #{$btn-padding-x};
  --#{$prefix}btn-padding-y: #{$btn-padding-y};
  --#{$prefix}btn-font-family: #{$btn-font-family};
  @include rfs($btn-font-size, --#{$prefix}btn-font-size);
  --#{$prefix}btn-font-weight: #{$btn-font-weight};
  --#{$prefix}btn-line-height: #{$btn-line-height};
  --#{$prefix}btn-color: #{$btn-link-color};
  --#{$prefix}btn-bg: transparent;
  --#{$prefix}btn-border-width: #{$btn-border-width};
  --#{$prefix}btn-border-color: transparent;
  --#{$prefix}btn-border-radius: #{$btn-border-radius};
  --#{$prefix}btn-hover-border-color: transparent;
  --#{$prefix}btn-box-shadow: #{$btn-box-shadow};
  --#{$prefix}btn-disabled-opacity: #{$btn-disabled-opacity};
  --#{$prefix}btn-focus-box-shadow: 0 0 0 #{$btn-focus-width} rgba(var(--#{$prefix}btn-focus-shadow-rgb), 0.5);
  // scss-docs-end btn-css-vars

  display: inline-block;
  font-family: var(--#{$prefix}btn-font-family);
  @include font-size(var(--#{$prefix}btn-font-size));
  font-weight: var(--#{$prefix}btn-font-weight);
  line-height: var(--#{$prefix}btn-line-height);
  color: var(--#{$prefix}btn-color);
  text-align: center;
  vertical-align: middle;
  cursor: if($enable-button-pointers, pointer, null);
  user-select: none;
  border: var(--#{$prefix}btn-border-width) solid var(--#{$prefix}btn-border-color);
  @include border-radius(var(--#{$prefix}btn-border-radius));
  @include gradient-bg(var(--#{$prefix}btn-bg));
  @include box-shadow(var(--#{$prefix}btn-box-shadow));
  @include transition($btn-transition);

  //btn-css-vars
  --bs-btn-color: #{$primary};
  --bs-btn-hover-color: #{$color-background-primary-hover};
  --bs-btn-active-color: #003366; // TODO change with tokens when available
  //btn-css-vars-end
  padding: 12px 24px;
  font-size: $btn-font-size;
  white-space: initial;
  text-decoration: none;
  box-shadow: none;

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

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

  &:focus-visible {
    color: var(--#{$prefix}btn-hover-color);
    @include gradient-bg(var(--#{$prefix}btn-hover-bg));
    border-color: var(--#{$prefix}btn-hover-border-color);
    outline: 0;
    // Avoid using mixin so we can pass custom focus shadow properly
    @if $enable-shadows {
      box-shadow: var(--#{$prefix}btn-box-shadow), var(--#{$prefix}btn-focus-box-shadow);
    } @else {
      box-shadow: var(--#{$prefix}btn-focus-box-shadow);
    }
  }

  .btn-check:focus-visible + & {
    border-color: var(--#{$prefix}btn-hover-border-color);
    outline: 0;
    // Avoid using mixin so we can pass custom focus shadow properly
    @if $enable-shadows {
      box-shadow: var(--#{$prefix}btn-box-shadow), var(--#{$prefix}btn-focus-box-shadow);
    } @else {
      box-shadow: var(--#{$prefix}btn-focus-box-shadow);
    }
  }

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

    &:focus-visible {
      // Avoid using mixin so we can pass custom focus shadow properly
      @if $enable-shadows {
        box-shadow: var(--#{$prefix}btn-active-shadow), var(--#{$prefix}btn-focus-box-shadow);
      } @else {
        box-shadow: var(--#{$prefix}btn-focus-box-shadow);
      }
    }
  }

  &:disabled,
  &.disabled,
  fieldset:disabled & {
    color: var(--#{$prefix}btn-disabled-color);
    pointer-events: none;
    background-color: var(--#{$prefix}btn-disabled-bg);
    background-image: if($enable-gradients, none, null);
    border-color: var(--#{$prefix}btn-disabled-border-color);
    opacity: var(--#{$prefix}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);
    box-shadow: inset 0 0 0 2px $value;
    &.disabled,
    &:hover,
    &:active {
      box-shadow: inset 0 0 0 2px color-hover($value);
    }
  }
}
// scss-docs-end btn-variant-loops

//
// Link buttons
//

// Make a button look and behave like a link
.btn-link {
  --#{$prefix}btn-font-weight: #{$font-weight-normal};
  --#{$prefix}btn-color: #{$btn-link-color};
  --#{$prefix}btn-bg: transparent;
  --#{$prefix}btn-border-color: transparent;
  --#{$prefix}btn-hover-color: #{$btn-link-hover-color};
  --#{$prefix}btn-hover-border-color: transparent;
  --#{$prefix}btn-active-color: #{$btn-link-hover-color};
  --#{$prefix}btn-active-border-color: transparent;
  --#{$prefix}btn-disabled-color: #{$btn-link-disabled-color};
  --#{$prefix}btn-disabled-border-color: transparent;
  --#{$prefix}btn-box-shadow: none;
  --#{$prefix}btn-focus-shadow-rgb: #{to-rgb(mix(color-contrast($primary), $primary, 15%))};

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

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

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

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

  // No need for an active state here
}

//
// Button Sizes
//

.btn-me {
  margin-right: $v-gap * 1.5 !important;
}

.btn-xs,
.btn-sm,
.btn-lg {
  border-radius: $btn-border-radius;
}

.btn-xs {
  padding: 12px 16px;
  font-size: $btn-font-size-xs;
  line-height: $input-btn-line-height-xs;
}

.btn-sm {
  @include button-size($btn-padding-y-sm, $btn-padding-x-sm, $btn-font-size-sm, $btn-border-radius-sm);
  padding: 12px 24px;
  font-size: $btn-font-size-sm;
  line-height: $input-btn-line-height-sm;
}

.btn-lg {
  @include button-size($btn-padding-y-lg, $btn-padding-x-lg, $btn-font-size-lg, $btn-border-radius-lg);
  padding: 16px 24px;
  font-size: $btn-font-size-lg;
  line-height: $input-btn-line-height-lg;
}

.btn-progress {
  position: relative;
}

.btn-icon {
  display: inline-flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;

  .rounded-icon {
    width: 1.5em;
    height: 1.5em;

    .icon {
      margin-right: 0;
    }

    @include border-radius(12px);
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: $white;

    @each $color, $value in $theme-colors {
      &.rounded-#{$color} {
        background-color: $value;
      }
    }

    & + * {
      margin-left: 0.5em;
    }
  }

  .icon {
    border: none;

    width: 1.2em;
    height: 1.2em;

    & + * {
      margin-left: 0.25em;
    }
  }
}

.btn-full {
  border: none;
  box-shadow: none;
  line-height: 1.555;
  @include border-radius(0);
  // allow height 100%
  align-self: stretch;
  // height: 100%;
  width: inherit;
  margin-top: -$header-slim-button-v-padding;
  margin-bottom: -$header-slim-button-v-padding;
  margin-right: -$header-slim-button-v-padding;
  padding-left: 8px;
  padding-right: 8px;
  &:hover {
    text-decoration: none !important;
  }

  // Tablet vertical
  @include media-breakpoint-up(sm) {
    padding: 16px;
  }

  // Desktop
  @include media-breakpoint-up(lg) {
    padding: 12px 24px !important;
    margin: 0;
    flex: 1;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
  }
}

.btn:disabled:hover,
.btn.disabled:hover {
  cursor: not-allowed;
}

.btn-primary {
  &:disabled,
  &.disabled {
    // color: $gray-label-disabled;
    // background-color: $gray-disabled;
    // border-color: $gray-border-disabled;
    //progress bar button
    &.btn-progress {
      background-color: hsl(210, 76%, 67%); // UI kit - missing token
      border-color: hsl(210, 76%, 67%); // UI kit - missing token
      color: $white;
      opacity: 1;
    }
  }
}

.btn-secondary {
  &:disabled,
  &.disabled {
    //progress bar button
    &.btn-progress {
      background-color: hsl(210, 12%, 52%); // UI kit - missing tokens
      border-color: hsl(210, 12%, 52%); // UI kit - missing tokens
      opacity: 1;
    }
  }
}

.bg-dark {
  .btn-link {
    color: $white;
  }
  .btn-primary {
    @include button-variant(
      $white,
      $primary,
      $color: $primary,
      $hover-color: $primary,
      $hover-background: shade-color($white, 15%),
      $active-color: $primary,
      $active-background: shade-color($white, 20%)
    );
    &.disabled,
    &:disabled {
      color: shade-color($primary, 10%);
    }
  }
  .btn-outline-primary {
    @include button-outline-variant($white);
    box-shadow: inset 0 0 0 2px $white;
    &:hover {
      box-shadow: inset 0 0 0 2px color-hover($white);
    }
  }
  .btn-secondary {
    @include button-variant(
      $secondary,
      $secondary,
      $color: $white,
      $hover-color: $white,
      $hover-background: shade-color($secondary, 15%),
      $hover-border: $secondary
    );
    color: $white;
  }
  .btn-outline-secondary {
    @include button-outline-variant($white, color-hover($white), transparent, color-hover($white));
  }
}

// Transparent background and border properties included for button version.
// iOS requires the button element instead of an anchor tag.
// If you want the anchor version, it requires `href="#"`.
// See https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile

.btn-close {
  box-sizing: content-box;
  width: $btn-close-width;
  height: $btn-close-height;
  padding: $btn-close-padding-y $btn-close-padding-x;
  color: $btn-close-color;
  background: transparent escape-svg($btn-close-bg) center / $btn-close-width auto no-repeat; // include transparent for button elements
  border: 0; // for button elements
  @include border-radius();
  opacity: $btn-close-opacity;
  background-color: transparent;
  position: relative;
  .icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }

  // Override <a>'s hover style
  &:hover {
    color: $btn-close-color;
    text-decoration: none;
    opacity: $btn-close-hover-opacity;
  }

  &:focus {
    outline: 0;
    box-shadow: $btn-close-focus-shadow;
    opacity: $btn-close-focus-opacity;
  }

  &:disabled,
  &.disabled {
    pointer-events: none;
    user-select: none;
    opacity: $btn-close-disabled-opacity;
  }
}

.btn-close-white {
  filter: $btn-close-white-filter;
}