/**
 * @license
 * Scale https://github.com/telekom/scale
 *
 * Copyright (c) 2021 Egor Kirpichev and contributors, Deutsche Telekom AG
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

:host {
  --width: auto;
  --spacing-x-right: var(--telekom-spacing-composition-space-07);
  --spacing-x-left: var(--telekom-spacing-composition-space-07);
  --spacing-x-icon-only: var(--telekom-spacing-composition-space-05);
  --min-height: var(--telekom-spacing-composition-space-13);
  --min-width: var(--telekom-spacing-composition-space-13);
  --radius: var(--telekom-radius-standard);
  --transition: all var(--telekom-motion-duration-transition)
    var(--telekom-motion-easing-standard);
  --color-focus: var(--telekom-color-functional-focus-standard);
  --font-weight: var(--telekom-typography-font-weight-bold);
  --font-size: var(--telekom-typography-font-size-body);
  --line-height: var(--telekom-typography-line-spacing-tight);
  --spacing-icon-x: var(--telekom-spacing-composition-space-04);
  --vertical-align: middle;

  /* size: small */
  --font-size-small: var(--telekom-typography-font-size-caption);
  --line-height-small: 1.125rem;
  --min-height-small: var(--telekom-spacing-composition-space-10);
  --spacing-x-right-small: var(--telekom-spacing-composition-space-06);
  --spacing-x-left-small: var(--telekom-spacing-composition-space-06);
  --spacing-x-icon-only-small: var(--telekom-spacing-composition-space-00);
  --spacing-icon-x-small: var(--telekom-spacing-composition-space-03);

  /* variant: primary */
  --radius-primary: var(--radius);
  --background-primary: var(--telekom-color-primary-standard);
  --background-primary-hover: var(--telekom-color-primary-hovered);
  --background-primary-active: var(--telekom-color-primary-pressed);
  --background-primary-disabled: var(--telekom-color-ui-disabled);
  --color-primary: var(--telekom-color-text-and-icon-white-standard);
  --color-primary-disabled: var(--telekom-color-text-and-icon-disabled);

  /* variant: secondary */
  --radius-secondary: var(--radius);
  --border-width-secondary: var(--telekom-spacing-composition-space-01);
  --background-secondary: transparent;
  --color-secondary: var(--telekom-color-text-and-icon-standard);
  --color-secondary-hover: var(--telekom-color-text-and-icon-standard);
  --color-secondary-active: var(--telekom-color-text-and-icon-standard);
  --color-secondary-disabled: var(--telekom-color-text-and-icon-disabled);
  --background-secondary: var(--telekom-color-ui-state-fill-standard);
  --background-secondary-hover: var(--telekom-color-ui-state-fill-hovered);
  --background-secondary-active: var(--telekom-color-ui-state-fill-pressed);
  --background-secondary-disabled: none;
  --border-secondary: var(--telekom-color-ui-border-standard);
  --border-secondary-hover: var(--telekom-color-ui-border-hovered);
  --border-secondary-active: var(--telekom-color-ui-border-pressed);
  --border-secondary-focus: var(--telekom-color-functional-focus-standard);

  /* variant: secondary white */
  --border-secondary-white: var(--telekom-color-ui-white);
  --color-secondary-white: var(--telekom-color-ui-white);
  --background-secondary-white-hover: var(
    --telekom-color-ui-state-fill-hovered-inverted
  );
  --background-secondary-white-active: var(
    --telekom-color-ui-state-fill-pressed-inverted
  );
  --secondary-white-opacity: 0.5;

  /* variant: ghost */
  --radius-ghost: var(--radius);
  --border-width-ghost: var(--telekom-spacing-composition-space-01);
  --spacing-x-ghost: var(--telekom-spacing-composition-space-04);
  --color-ghost: var(--telekom-color-text-and-icon-primary-standard);
  --color-ghost-hover: var(--telekom-color-text-and-icon-primary-hovered);
  --color-ghost-active: var(--telekom-color-text-and-icon-primary-pressed);
  --color-ghost-disabled: var(--telekom-color-text-and-icon-disabled);
  --background-ghost-hover: var(--telekom-color-ui-state-fill-hovered);
  --background-ghost-active: var(--telekom-color-ui-state-fill-pressed);

  display: inline-block;
}

.button {
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  position: relative;
  border: 0;
  outline: none;
  cursor: pointer;
  user-select: none;
  font-family: inherit;
  word-spacing: inherit;
  letter-spacing: inherit;
  justify-content: center;
  text-decoration: none;
  font-weight: var(--font-weight);
  font-size: var(--font-size);
  line-height: var(--line-height);
  min-height: var(--min-height);
  min-width: var(--min-width);
  width: var(--width);
  padding-left: var(--spacing-x-left);
  padding-right: var(--spacing-x-right);
  vertical-align: var(--vertical-align);
  transition: var(--transition);
}

.button.button--size-small {
  font-size: var(--font-size-small);
  line-height: var(--line-height-small);
  min-height: var(--min-height-small);
  padding-left: var(--spacing-x-left-small);
  padding-right: var(--spacing-x-right-small);
}

.button:not(.button--disabled):focus {
  outline: var(--telekom-line-weight-highlight) solid var(--color-focus);
  outline-offset: var(--telekom-spacing-composition-space-01);
}

.button.button--icon-before:not(.button--icon-only) ::slotted(*) {
  margin-right: var(--spacing-icon-x);
  margin-left: calc(var(--spacing-icon-x-small) * -1);
  margin-top: var(--spacing-icon-x);
  margin-bottom: var(--spacing-icon-x);
}

.button.button--icon-before:not(.button--icon-only).button--size-small
  ::slotted(*) {
  margin-right: var(--spacing-icon-x-small);
  margin-left: calc(var(--spacing-icon-x) * -0.5);
}

.button.button--icon-after:not(.button--icon-only) ::slotted(*) {
  margin-left: var(--spacing-icon-x);
  margin-right: calc(var(--spacing-icon-x-small) * -1);
  margin-top: var(--spacing-icon-x);
  margin-bottom: var(--spacing-icon-x);
}

.button.button--icon-after:not(.button--icon-only).button--size-small
  ::slotted(*) {
  margin-left: var(--spacing-icon-x-small);
  margin-right: calc(var(--spacing-icon-x) * -0.5);
}

.button:after {
  top: 0;
  left: 0;
  width: 100%;
  border: var(--telekom-spacing-composition-space-01) solid transparent;
  height: 100%;
  content: '';
  display: block;
  position: absolute;
  box-sizing: border-box;
  pointer-events: none;
  border-radius: var(--radius);
}

.button--icon-only {
  padding-left: var(--spacing-x-icon-only);
  padding-right: var(--spacing-x-icon-only);
}
.button--icon-only.button--variant-secondary {
  padding-left: calc(var(--spacing-x-icon-only) - 1px);
  padding-right: calc(var(--spacing-x-icon-only) - 1px);
}

.button--icon-only.button--size-small {
  padding-left: var(--spacing-x-icon-only-small);
  padding-right: var(--spacing-x-icon-only-small);
  min-width: 32px;
}
.button--icon-only.button--size-small.button--variant-secondary {
  padding-left: calc(var(--spacing-x-icon-only-small) - 1px);
  padding-right: calc(var(--spacing-x-icon-only-small) - 1px);
}

.button--disabled {
  cursor: not-allowed;
}

/* Variants */

.button--variant-primary {
  text-align: center;
  border-radius: var(--radius);
  background: var(--background-primary);
  color: var(--color-primary);
}
.button--variant-primary:not(.button--disabled):hover {
  background: var(--background-primary-hover);
}
.button--variant-primary:not(.button--disabled):active {
  background: var(--background-primary-active);
}

.button--disabled.button--variant-primary {
  background: var(--background-primary-disabled);
  color: var(--color-primary-disabled);
}

.button--variant-secondary {
  background: var(--background-secondary);
  text-align: center;
  border-radius: var(--radius-secondary);
  border: var(--border-width-secondary) solid currentColor;
  color: var(--color-secondary);
  background-color: var(--background-secondary);
  border-color: var(--border-secondary);
}
.button--variant-secondary:not(.button--disabled):hover {
  color: var(--color-secondary-hover);
  background-color: var(--background-secondary-hover);
  border-color: var(--border-secondary-hover);
}
.button--variant-secondary:not(.button--disabled):active {
  color: var(--color-secondary-active);
  background-color: var(--background-secondary-active);
  border-color: var(--border-secondary-active);
}
.button--disabled.button--variant-secondary {
  color: var(--color-secondary-disabled);
  background-color: var(--background-secondary-disabled);
}

.button--variant-ghost {
  background: transparent;
  text-align: center;
  border-radius: var(--radius-ghost);
  border: var(--border-width-ghost) solid transparent;
  color: var(--color-ghost);
  padding-left: var(--spacing-x-ghost);
  padding-right: var(--spacing-x-ghost);
}
.button--variant-ghost:not(.button--disabled):hover {
  color: var(--color-ghost-hover);
  background-color: var(--background-ghost-hover);
}
.button--variant-ghost:not(.button--disabled):active {
  color: var(--color-ghost-active);
  background-color: var(--background-ghost-active);
}
.button--disabled.button--variant-ghost {
  color: var(--color-ghost-disabled);
}

.button--variant-secondary-white {
  background: var(--background-secondary);
  text-align: center;
  border-radius: var(--radius-secondary);
  border: var(--border-width-secondary) solid currentColor;
  color: var(--color-secondary-white);
  background-color: var(--background-secondary);
  border-color: var(--border-secondary-white);
}

.button--variant-secondary-white:not(.button--disabled):hover {
  background-color: var(--background-secondary-white-hover);
}

.button--variant-secondary-white:not(.button--disabled):active {
  background-color: var(--background-secondary-white-active);
}

.button--disabled.button--variant-secondary-white {
  opacity: var(--secondary-white-opacity);
}