//
// Buttons
//---------

//
// Base styles
//

.btn {
	display: inline-block;
	font-weight: $btn-font-weight;
	text-align: center;
	white-space: nowrap;
	vertical-align: middle;
	user-select: none;
	border: $btn-border-width solid transparent;
	@include button-size($btn-padding-y, $btn-padding-x, $font-size-base, $btn-line-height, $btn-border-radius);
	transition: $btn-transition;
	
	// Share hover and focus styles
	@include hover-focus {
		text-decoration: none;
	}
	
	&:focus,
	&.focus {
		outline: 0;
		box-shadow: $btn-focus-box-shadow;
	}
	
	// Disabled comes first so active can properly restyle
	&.disabled,
	&:disabled {
		opacity: $btn-disabled-opacity;
		box-shadow: none;
	}
	
	// Opinionated: add "hand" cursor to non-disabled .btn elements
	&:not(:disabled):not(.disabled) {
		cursor: pointer;
	}
	
	&:not(:disabled):not(.disabled):active,
	&:not(:disabled):not(.disabled).active {
		background-image: none;
		@include box-shadow($btn-active-box-shadow);
	
	&:focus {
			@include box-shadow($btn-focus-box-shadow, $btn-active-box-shadow);
	}
	}
}

// Future-proof disabling of clicks on `<a>` elements
a.btn.disabled,
fieldset:disabled a.btn {
	pointer-events: none;
}

// Make a button look and behave like a link
.btn-link {
	font-weight: $font-weight-normal;
	color: $link-color;
	background-color: transparent;
	
	@include hover {
		text-decoration: $link-hover-decoration;
		background-color: transparent;
	}
	
	&:focus,
	&.focus {
		text-decoration: $link-hover-decoration;
		box-shadow: none;
	}
	
	&:disabled,
	&.disabled {
		color: $btn-link-disabled-color;
		pointer-events: none;
	}
	
	// No need for an active state here
}


//
// Button Sizes
//

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

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

//
// Alternate buttons
//

@each $color, $value in $theme-colors {
	.btn-#{$color} {
		@include button-variant($color, $value, $value);
	}
}

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

.btn-pill {
	@include border-radius(16px);
}


//
// Link buttons
//
.btn-link {
	font-weight: $font-weight-normal;
	color: $link-color;
	background-color: transparent;
	
	@include hover {
		color: $link-hover-color;
		text-decoration: $link-hover-decoration;
		background-color: transparent;
		border-color: transparent;
	}
	
	&:focus,
	&.focus {
		text-decoration: $link-hover-decoration;
		border-color: transparent;
		box-shadow: none;
	}
	
	&:disabled,
	&.disabled {
		color: $btn-link-disabled-color;
		pointer-events: none;
	}
	
	// No need for an active state here
}


//
// Block button
//

.btn-block {
	display: block;
	width: 100%;
	
	// Vertically space out multiple block buttons
	+ .btn-block {
		margin-top: $btn-block-spacing-y;
	}
}

// Specificity overrides
input[type="submit"],
input[type="reset"],
input[type="button"] {
	&.btn-block {
		width: 100%;
	}
}