/* Box colors */
.bg-1 {
	background: #ECEFF1;
	color: #37474f;
}
.bg-2 {
	background: #7986cb;
	color: #ECEFF1;
}
.bg-3 {
	background: #37474f;
	color: #fff;
}

/* Common button styles */
.button {
	float: left;
	min-width: 150px;
	max-width: 250px;
	display: block;
	margin: 1em;
	padding: 1em 2em;
	border: none;
	background: none;
	color: inherit;
	vertical-align: middle;
	position: relative;
	z-index: 1;
	-webkit-backface-visibility: hidden;
	-moz-osx-font-smoothing: grayscale;
}
.button:focus {
	outline: none;
}
.button > span {
	vertical-align: middle;
}

/* Text color adjustments (we could stick to the "inherit" but that does not work well in Safari) */
.bg-1 .button {
	color: #37474f;
	border-color: #37474f;
}
.bg-2 .button {
	color: #ECEFF1;
	border-color: #ECEFF1;
}
.bg-3 .button {
	color: #fff;
	border-color: #fff;
}

/* Sizes */
.button--size-s {
	font-size: 14px;
}
.button--size-m {
	font-size: 16px;
}
.button--size-l {
	font-size: 18px;
}

/* Typography and Roundedness */
.button--text-upper {
	letter-spacing: 2px;
	text-transform: uppercase;
}
.button--text-thin {
	font-weight: 300;
}
.button--text-medium {
	font-weight: 500;
}
.button--text-thick {
	font-weight: 600;
}
.button--round-s {
	border-radius: 5px;
}
.button--round-m {
	border-radius: 15px;
}
.button--round-l {
	border-radius: 40px;
}

/* Borders */
.button--border-thin {
	border: 1px solid;
}
.button--border-medium {
	border: 2px solid;
}
.button--border-thick {
	border: 3px solid;
}

/* Individual button styles */



/* Nuka */
.button--nuka {
	margin: 1em 2em;
	-webkit-transition: color 0.3s;
	transition: color 0.3s;
	-webkit-transition-timing-function: cubic-bezier(0.2, 1, 0.3, 1);
	transition-timing-function: cubic-bezier(0.2, 1, 0.3, 1);
}
.button--nuka.button--inverted {
	color: #37474f;
}
.button--nuka::before,
.button--nuka::after {
	content: '';
	position: absolute;
	border-radius: inherit;
	background: #7986cb;
	z-index: -1;
}
.button--nuka::before {
	top: -4px;
	bottom: -4px;
	left: -4px;
	right: -4px;
	opacity: 0.2;
	-webkit-transform: scale3d(0.7, 1, 1);
	transform: scale3d(0.7, 1, 1);
	-webkit-transition: -webkit-transform 0.3s, opacity 0.3s;
	transition: transform 0.3s, opacity 0.3s;
}
.button--nuka::after {
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	-webkit-transform: scale3d(1.1, 1, 1);
	transform: scale3d(1.1, 1, 1);
	-webkit-transition: -webkit-transform 0.3s, background-color 0.3s;
	transition: transform 0.3s, background-color 0.3s;
}
.button--nuka::before,
.button--nuka::after {
	-webkit-transition-timing-function: cubic-bezier(0.2, 1, 0.3, 1);
	transition-timing-function: cubic-bezier(0.2, 1, 0.3, 1);
}
.button--nuka.button--inverted::before,
.button--nuka.button--inverted::after {
	background: #fff;
}
.button--nuka:hover {
	color: #fff;
}
.button--nuka:hover::before {
	opacity: 1;
}
.button--nuka:hover::after {
	background-color: #37474f;
}
.button--nuka.button--inverted:hover::after {
	background-color: #7986cb;
}
.button--nuka:hover::after,
.button--nuka:hover::before {
	-webkit-transform: scale3d(1, 1, 1);
	transform: scale3d(1, 1, 1);
}