// /**
//  * Copyright (C) 2013 Crossing Hippos - Babs Gösgens. All rights reserved.
//  * Licensed under GNU General Public License version 2 or later !default; see LICENSE.txt
//  */
@if $trace-imports { @debug 'imported'; }


//  ==========================================================================
//  Button base class
//  ==========================================================================

	$button-base-class: "btn" !default;


//  ==========================================================================
//  Button base properties
//  ==========================================================================

	$button-cursor: pointer !default;
	$button-vertical-align: baseline;


	// -----------------------------------------------------------------------
	// Button display (display, vertical-align)
	// -----------------------------------------------------------------------

	$button-display: inline-block !default;
	$button-vertical-align: middle !default;


	// -----------------------------------------------------------------------
	// Button padding (top, right, left, bottom)
	// -----------------------------------------------------------------------

	$button-padding-top: vertical-rhythm(.25) !default;
	$button-padding-right: horizontal-rhythm(1/2) !default;
	$button-padding-bottom: vertical-rhythm(.25) !default;
	$button-padding-left: horizontal-rhythm(1/2) !default;


	// -----------------------------------------------------------------------
	// Button background (background-color, background-image)
	// -----------------------------------------------------------------------

	$button-background-color: $color-theme !default; // not base
	$button-background-image: false !default; // not base


	// -----------------------------------------------------------------------
	// Button border (top, right, left, bottom)
	// -----------------------------------------------------------------------

	$button-border-width: 1px !default;
	$button-border-style: solid !default; // not base
	$button-border-color: $button-background-color !default; // not base
	$button-border-radius: $corner-radius !default;


	// -----------------------------------------------------------------------
	// Button shadow (box-shadow, inner-shadow)
	// -----------------------------------------------------------------------

	$button-shadow-box-outer: false !default;
	$button-shadow-box-inner: false !default;


	// -----------------------------------------------------------------------
	// Button text (color, shadow, align, decoration)
	// -----------------------------------------------------------------------

	$button-text-color: $white !default;
	$button-text-shadow: -1px -1px 0 rgba(0,0,0,.3) !default;
	$button-text-align: center !default;
	$button-text-decoration: none !default;


	// -----------------------------------------------------------------------
	// Button type (type, size, leading)
	// -----------------------------------------------------------------------

	$button-type-type: $type-default !default;
	$button-type-size: $base-font-size !default;
	$button-type-rhythm: 1 !default;


//  ==========================================================================
//  Button hover state properties
//  ==========================================================================

	$button-hover-background-color: lighten($button-background-color, 20%) !default;
	$button-hover-background-image: false !default;
	$button-hover-border-color: $button-hover-background-color !default;


//  ==========================================================================
//  Button active state properties
//  $button-active-background-image: linear-gradient(lighten($button-active-background-color,5),darken($button-active-background-color,5))
//  ==========================================================================

	$button-active-background-color: lighten($button-background-color, 20%) !default;
	$button-active-background-image: false !default;
	$button-active-border-color: $button-active-background-color !default;


//  ==========================================================================
//  Elements
//  ==========================================================================

	$button-base: 
		$button-base-class,
		(
			(cursor, ($button-cursor))
			(display, ($button-display $button-vertical-align))
			(padding, ($button-padding-top $button-padding-right $button-padding-bottom $button-padding-left))
			(background, ($button-background-color $button-background-image))
			(border, ($button-border-width $button-border-style $button-border-color))
			(border-radius, ($button-border-radius))
			(box-shadow, ($button-shadow-box-outer $button-shadow-box-inner))
			(color, ($button-text-color))
			(text, ($button-text-align $button-text-decoration $button-text-shadow))
			(type, ($button-type-type $button-type-size $button-type-rhythm))
		),
		false
		!default;

	$button-state: 
		'state',
		(
			(cursor, false)
			(display, false)
			(padding, false)
			(background, false)
			(border, false)
			(border-radius, false)
			(box-shadow, false)
			(color, false)
			(text, false)
			(type, false)
		),
		true
		!default;

	$button: clone($button-base, "#{$button-base-class}", false) !default;
	$button-hover: new($button-state, "is-#{$button-base-class}-hover", true) !default;
	$button-active: new($button-state, "is-#{$button-base-class}-active", true) !default;

	$button-hover: change($button-hover, (background, ($button-hover-background-color $button-hover-background-image)));
	$button-hover: change($button-hover, (border, (false false $button-hover-border-color)));

	$button-active: change($button-active, (background, ($button-active-background-color $button-active-background-image)));
	$button-active: change($button-active, (border, (false false $button-active-border-color)));

	$buttons: $button, $button-hover, $button-active !default;