//
// 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};
    --#{$prefix}btn-color: #{$body-color};
    --#{$prefix}btn-bg: transparent;
    --#{$prefix}position: relative;
    --#{$prefix}btn-border-width: #{$btn-border-width};
    --#{$prefix}btn-border-color: transparent;
    --#{$prefix}btn-border-radius: #{$btn-border-radius};
    --#{$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), .5);
    // scss-docs-end btn-css-vars

    display: inline-block;
    padding: var(--#{$prefix}btn-padding-y) var(--#{$prefix}btn-padding-x);
    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(--#{$prefix}btn-color);
    text-align: center;
    position: var(--#{$prefix}position);
    text-decoration: if($link-decoration ==none, null, none);
    white-space: $btn-white-space;
    vertical-align: middle;
    cursor: if($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);

    &: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:focus+&,
    &:focus {
        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:checked+&,
    .btn-check:active+&,
    &: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 {

            // 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);
    }
}

// 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;

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

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

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