/** @define Button; use strict */

/**
 * Settings
 */

:root {
  /* Base */
  --Button-color: var(--color-base);
  --Button-bg: color(var(--color-gray-lighter) b(10%));
  --Button-border-color: color(var(--color-gray-lighter) b(10%));
  --Button-border-width: 1px;
  --Button-disabled-opacity: 0.6;
  --Button-padding: var(--padding-base-vertical) var(--padding-base-horizontal);
  --Button-border-radius-base: var(--border-radius-base);
}

/**
 * The button classes are best applied to links, buttons, and submit inputs.
 * These components can be used in forms, as calls to action, or as part of the
 * general UI of the site/app.
 */

/**
 * 1. Corrects inability to style clickable `input` types in iOS.
 * 2. Normalize `box-sizing` across all elements that this component could be
 *    applied to.
 * 3. Inherit text color from ancestor.
 * 4. Inherit font styles from ancestor.
 * 5. Normalize `line-height`. For `input`, it can't be changed from `normal` in Firefox 4+.
 * 6. Prevent button text from being selectable.
 * 7. Make sure `input` will wrap text across multiple lines.
 */

.Button {
  -webkit-appearance: none; /* 1 */
  background: transparent;
  border: var(--Button-border-width) solid var(--Button-border-color);
  box-sizing: border-box; /* 2 */
  color: var(--Button-color); /* 3 */
  cursor: pointer;
  vertical-align: middle;
  display: inline-block;
  line-height: inherit; /* 5 */
  margin: 0;
  padding: var(--Button-padding);
  position: relative;
  text-align: center;
  text-decoration: none;
  user-select: none; /* 6 */
  white-space: normal; /* 7 */
  outline: 0;
  border-radius: var(--Button-border-radius-base);
}

/**
 * Remove excess padding and border in Firefox 4+
 */
.Button::-moz-focus-inner {
  border: 0;
  padding: 0;
}

/**
 * UI states
 */
.Button:hover,
.Button:focus,
.Button:active {
  text-decoration: none;
  outline: 0;
}

.Button:disabled,
.Button[disabled],
.Button.is-disabled {
  cursor: not-allowed;
  opacity: var(--Button-disabled-opacity);
}

/**
 * Options
 */

/* Button default */
.Button--default {
  color: var(--Button-color);
  background-color: var(--Button-bg);
  border-color: var(--Button-border-color);
}

.Button--default:hover {
  color: var(--Button-color);
  background-color: color(var(--Button-bg) b(10%));
  border-color: color(var(--Button-border-color) b(30%));
}

.Button--default:focus,
.Button--default.is-focus {
  color: var(--Button-color);
  background-color: color(var(--Button-bg) b(10%));
  border-color: color(var(--Button-border-color) b(25%));
}

.Button--default:active,
.Button--default.is-active {
  color: var(--Button-color);
  background-color: color(var(--Button-bg) b(20%));
  border-color: color(var(--Button-border-color) b(40%));
}

/* Button primary */
.Button--primary {
  color: var(--color-white);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.Button--primary:hover {
  color: var(--color-white);
  background-color: color(var(--color-primary) b(20%));
  border-color: color(var(--color-primary) b(20%));
}

.Button--primary:focus,
.Button--primary.is-focus {
  color: var(--color-white);
  background-color: color(var(--color-primary) b(30%));
  border-color: color(var(--color-primary) b(30%));
}

.Button--primary:active,
.Button--primary.is-active {
  color: var(--color-white);
  background-color: color(var(--color-primary) b(40%));
  border-color: color(var(--color-primary) b(40%));
}

/* Button success */
.Button--success {
  color: var(--color-white);
  background-color: var(--color-success);
  border-color: var(--color-success);
}

.Button--success:hover {
  color: var(--color-white);
  background-color: color(var(--color-success) b(20%));
  border-color: color(var(--color-success) b(20%));
}

.Button--success:focus,
.Button--success.is-focus {
  color: var(--color-white);
  background-color: color(var(--color-success) b(30%));
  border-color: color(var(--color-success) b(30%));
}

.Button--success:active,
.Button--success.is-active {
  color: var(--color-white);
  background-color: color(var(--color-success) b(40%));
  border-color: color(var(--color-success) b(40%));
}

/* Button info */

.Button--info {
  color: var(--color-white);
  background-color: var(--color-info);
  border-color: var(--color-info);
}

.Button--info:hover {
  color: var(--color-white);
  background-color: color(var(--color-info) b(20%));
  border-color: color(var(--color-info) b(20%));
}

.Button--info:focus,
.Button--info.is-focus {
  color: var(--color-white);
  background-color: color(var(--color-info) b(30%));
  border-color: color(var(--color-info) b(30%));
}

.Button--info:active,
.Button--info.is-active {
  color: var(--color-white);
  background-color: color(var(--color-info) b(40%));
  border-color: color(var(--color-info) b(40%));
}

/* Button warning */

.Button--warning {
  color: var(--color-white);
  background-color: var(--color-warning);
  border-color: var(--color-warning);
}

.Button--warning:hover {
  color: var(--color-white);
  background-color: color(var(--color-warning) b(20%));
  border-color: color(var(--color-warning) b(20%));
}

.Button--warning:focus,
.Button--warning.is-focus {
  color: var(--color-white);
  background-color: color(var(--color-warning) b(30%));
  border-color: color(var(--color-warning) b(30%));
}

.Button--warning:active,
.Button--warning.is-active {
  color: var(--color-white);
  background-color: color(var(--color-warning) b(40%));
  border-color: color(var(--color-warning) b(40%));
}

/* Button danger */

.Button--danger {
  color: var(--color-white);
  background-color: var(--color-danger);
  border-color: var(--color-danger);
}

.Button--danger:hover {
  color: var(--color-white);
  background-color: color(var(--color-danger) b(20%));
  border-color: color(var(--color-danger) b(20%));
}

.Button--danger:focus,
.Button--danger.is-focus {
  color: var(--color-white);
  background-color: color(var(--color-danger) b(30%));
  border-color: color(var(--color-danger) b(30%));
}

.Button--danger:active,
.Button--danger.is-active {
  color: var(--color-white);
  background-color: color(var(--color-danger) b(40%));
  border-color: color(var(--color-danger) b(40%));
}

/**
 * Outline
 */

.Button--outline {
  background-color: transparent;
}

/* Button primaryOutline */
.Button--primaryOutline {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.Button--primaryOutline:hover {
  color: color(var(--color-primary) b(20%));
  border-color: color(var(--color-primary) b(20%));
}

.Button--primaryOutline:focus,
.Button--primaryOutline.is-focus {
  color: color(var(--color-primary) b(30%));
  border-color: color(var(--color-primary) b(30%));
}

.Button--primaryOutline:active,
.Button--primaryOutline.is-active {
  color: color(var(--color-primary) b(40%));
  border-color: color(var(--color-primary) b(40%));
}

/* Button successOutline */
.Button--successOutline {
  color: var(--color-success);
  border-color: var(--color-success);
}

.Button--successOutline:hover {
  color: color(var(--color-success) b(20%));
  border-color: color(var(--color-success) b(20%));
}

.Button--successOutline:focus,
.Button--successOutline.is-focus {
  color: color(var(--color-success) b(30%));
  border-color: color(var(--color-success) b(30%));
}

.Button--successOutline:active,
.Button--successOutline.is-active {
  color: color(var(--color-success) b(40%));
  border-color: color(var(--color-success) b(40%));
}

/* Button infoOutline */
.Button--infoOutline {
  color: var(--color-info);
  border-color: var(--color-info);
}

.Button--infoOutline:hover {
  color: color(var(--color-info) b(20%));
  border-color: color(var(--color-info) b(20%));
}

.Button--infoOutline:focus,
.Button--infoOutline.is-focus {
  color: color(var(--color-info) b(30%));
  border-color: color(var(--color-info) b(30%));
}

.Button--infoOutline:active,
.Button--infoOutline.is-active {
  color: color(var(--color-info) b(40%));
  border-color: color(var(--color-info) b(40%));
}

/* Button warningOutline */
.Button--warningOutline {
  color: var(--color-warning);
  border-color: var(--color-warning);
}

.Button--warningOutline:hover {
  color: color(var(--color-warning) b(20%));
  border-color: color(var(--color-warning) b(20%));
}

.Button--warningOutline:focus,
.Button--warningOutline.is-focus {
  color: color(var(--color-warning) b(30%));
  border-color: color(var(--color-warning) b(30%));
}

.Button--warningOutline:active,
.Button--warningOutline.is-active {
  color: color(var(--color-warning) b(40%));
  border-color: color(var(--color-warning) b(40%));
}

/* Button dangerOutline */
.Button--dangerOutline {
  color: var(--color-danger);
  border-color: var(--color-danger);
}

.Button--dangerOutline:hover {
  color: color(var(--color-danger) b(20%));
  border-color: color(var(--color-danger) b(20%));
}

.Button--dangerOutline:focus,
.Button--dangerOutline.is-focus {
  color: color(var(--color-danger) b(30%));
  border-color: color(var(--color-danger) b(30%));
}

.Button--dangerOutline:active,
.Button--dangerOutline.is-active {
  color: color(var(--color-danger) b(40%));
  border-color: color(var(--color-danger) b(40%));
}

/**
 * Link
 * Make a button look and behave like a link
 */

.Button--link {
  color: var(--color-base);
  font-weight: normal;
  border-radius: 0;
}

.Button--link:active,
.Button--link[disabled] {
  background-color: transparent;
}

.Button--link:hover,
.Button--link:focus,
.Button--link:active {
  border-color: transparent;
}

.Button--link:hover,
.Button--link:focus {
  background-color: transparent;
}

.Button--link[disabled] {
  text-decoration: none;
}

/**
 * Button Sizes
 */

.Button--sm {
  /* line-height: ensure proper height of button next to sm input */
  padding: var(--padding-sm-vertical) var(--padding-sm-horizontal);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-sm);
  border-radius: var(--border-radius-sm);
}

.Button--md {
  padding: var(--padding-md-vertical) var(--padding-md-horizontal);
  font-size: var(--font-size-md);
  line-height: var(--line-height-md);
  border-radius: var(--border-radius-md);
}

.Button--lg {
  /* line-height: ensure even-numbered height of button next to large input */
  padding: var(--padding-lg-vertical) var(--padding-lg-horizontal);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-lg);
  border-radius: var(--border-radius-lg);
}

/**
 * Block button
 */

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

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

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

/**
 * Group
 */

.Button--group {
  position: relative;
}

.Button--group .Button {
  float: left;
  margin-left: -1px;
}

.Button--group .Button:hover,
.Button--group .Button:focus {
  z-index: 2;
}

.Button--group .Button:not(:first-child):not(:last-child) {
  border-radius: 0;
}

.Button--group .Button:first-child {
  margin-left: 0;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.Button--group .Button:last-child {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}