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

// Base styles
// --------------------------------------------------

.btn {
	display: inline-block;
	margin-bottom: 0; // For input.btn
	font-weight: @btn-font-weight;
	text-align: center;
	vertical-align: middle;
	touch-action: manipulation;
	outline: none !important;

	cursor: pointer;
	background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
	border: 1px solid transparent;
	white-space: nowrap;
	.button-size(
		@padding-base-vertical; @padding-base-horizontal; @font-size-base; @line-height-base; @border-radius-base
	);
	.user-select(none);

	&,
	&:active,
	&.active {
		&:focus,
		&.focus {
			.tab-focus();
		}
	}

	&:hover,
	&:focus,
	&.focus {
		color: @btn-default-color;
		text-decoration: none;
	}

	&.disabled,
	&[disabled],
	fieldset[disabled] & {
		cursor: @cursor-disabled;
		pointer-events: none; // Future-proof disabling of clicks
		.opacity(0.65);
		.box-shadow(none);
	}
}

// Alternate buttons
// --------------------------------------------------

.btn-default {
	.button-variant(@btn-default-color; @btn-default-bg; @btn-default-border);
}
.btn-primary {
	.button-variant(@btn-primary-color; @btn-primary-bg; @btn-primary-border);
}
// Success appears as green
.btn-success {
	.button-variant(@btn-success-color; @btn-success-bg; @btn-success-border);
}
// Info appears as blue-green
.btn-info {
	.button-variant(@btn-info-color; @btn-info-bg; @btn-info-border);
}
// Warning appears as orange
.btn-warning {
	.button-variant(@btn-warning-color; @btn-warning-bg; @btn-warning-border);
}
// Danger and error appear as red
.btn-danger {
	.button-variant(@btn-danger-color; @btn-danger-bg; @btn-danger-border);
}

// Link buttons
// -------------------------

// Make a button look and behave like a link
.btn-link {
	color: @link-color;
	font-weight: normal;
	border-radius: 0;

	&,
	&:active,
	&.active,
	&[disabled],
	fieldset[disabled] & {
		background-color: transparent;
		.box-shadow(none);
	}
	&,
	&:hover,
	&:focus,
	&:active {
		border-color: transparent;
	}
	&:hover,
	&:focus {
		color: @link-hover-color;
		text-decoration: @link-hover-decoration;
		background-color: transparent;
	}
	&[disabled],
	fieldset[disabled] & {
		&:hover,
		&:focus {
			color: @btn-link-disabled-color;
			text-decoration: none;
		}
	}
}

// Button Sizes
// --------------------------------------------------

.btn-lg {
	// line-height: ensure even-numbered height of button next to large input
	.button-size(
		@padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @border-radius-large
	);
}
.btn-sm {
	// line-height: ensure proper height of button next to small input
	.button-size(
		@padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @border-radius-small
	);
}
.btn-xs {
	.button-size(
		@padding-xs-vertical; @padding-xs-horizontal; @font-size-small; @line-height-small; @border-radius-small
	);
}

// Block button
// --------------------------------------------------

.btn-block {
	display: block;
	width: 100%;
}

// Vertically space out multiple block buttons
.btn-block + .btn-block {
	margin-top: 5px;
}

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