/*
 * Copyright (c) 2003-2020, CKSource - Frederico Knabben. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */

@import "../../../mixins/_focus.css";
@import "../../../mixins/_shadow.css";
@import "../../../mixins/_disabled.css";
@import "../../../mixins/_rounded.css";
@import "../../mixins/_button.css";
@import "@ckeditor/ckeditor5-ui/theme/mixins/_dir.css";

.ck.ck-button,
a.ck.ck-button {
	@mixin ck-button-colors --ck-color-button-default;
	@mixin ck-rounded-corners;

	white-space: nowrap;
	cursor: default;
	vertical-align: middle;
	padding: var(--ck-spacing-tiny);
	text-align: center;

	/* A very important piece of styling. Go to variable declaration to learn more. */
	min-width: var(--ck-ui-component-min-height);
	min-height: var(--ck-ui-component-min-height);

	/* Normalize the height of the line. Removing this will break consistent height
	among text and text-less buttons (with icons). */
	line-height: 1;

	/* Enable font size inheritance, which allows fluid UI scaling. */
	font-size: inherit;

	/* Avoid flickering when the foucs border shows up. */
	border: 1px solid transparent;

	/* Apply some smooth transition to the box-shadow and border. */
	transition: box-shadow .2s ease-in-out, border .2s ease-in-out;

	/* https://github.com/ckeditor/ckeditor5-theme-lark/issues/189 */
	-webkit-appearance: none;

	&:active,
	&:focus {
		@mixin ck-focus-ring;
		@mixin ck-box-shadow var(--ck-focus-outer-shadow);
	}

	/* Allow icon coloring using the text "color" property. */
	& .ck-button__icon {
		& use,
		& use * {
			color: inherit;
		}
	}

	& .ck-button__label {
		/* Enable font size inheritance, which allows fluid UI scaling. */
		font-size: inherit;
		font-weight: inherit;
		color: inherit;
		cursor: inherit;

		/* Must be consistent with .ck-icon's vertical align. Otherwise, buttons with and
		without labels (but with icons) have different sizes in Chrome */
		vertical-align: middle;

		@mixin ck-dir ltr {
			text-align: left;
		}

		@mixin ck-dir rtl {
			text-align: right;
		}
	}

	& .ck-button__keystroke {
		color: inherit;

		@mixin ck-dir ltr {
			margin-left: var(--ck-spacing-large);
		}

		@mixin ck-dir rtl {
			margin-right: var(--ck-spacing-large);
		}

		font-weight: bold;
		opacity: .7;
	}

	/* https://github.com/ckeditor/ckeditor5-theme-lark/issues/70 */
	&.ck-disabled {
		&:active,
		&:focus {
			/* The disabled button should have a slightly less visible shadow when focused. */
			@mixin ck-box-shadow var(--ck-focus-disabled-outer-shadow);
		}

		& .ck-button__icon {
			@mixin ck-disabled;
		}

		/* https://github.com/ckeditor/ckeditor5-theme-lark/issues/98 */
		& .ck-button__label {
			@mixin ck-disabled;
		}

		& .ck-button__keystroke {
			opacity: .3;
		}
	}

	&.ck-button_with-text {
		padding: var(--ck-spacing-tiny) var(--ck-spacing-standard);

		/* stylelint-disable-next-line no-descending-specificity */
		& .ck-button__icon {
			@mixin ck-dir ltr {
				margin-left: calc(-1 * var(--ck-spacing-small));
				margin-right: var(--ck-spacing-small);
			}

			@mixin ck-dir rtl {
				margin-right: calc(-1 * var(--ck-spacing-small));
				margin-left: var(--ck-spacing-small);
			}
		}
	}

	&.ck-button_with-keystroke {
		/* stylelint-disable-next-line no-descending-specificity */
		& .ck-button__label {
			flex-grow: 1;
		}
	}

	/* A style of the button which is currently on, e.g. its feature is active. */
	&.ck-on {
		@mixin ck-button-colors --ck-color-button-on;
	}

	&.ck-button-save {
		color: var(--ck-color-button-save);
	}

	&.ck-button-cancel {
		color: var(--ck-color-button-cancel);
	}
}

/* A style of the button which handles the primary action. */
.ck.ck-button-action,
a.ck.ck-button-action {
	@mixin ck-button-colors --ck-color-button-action;

	color: var(--ck-color-button-action-text);
}

.ck.ck-button-bold,
a.ck.ck-button-bold {
	font-weight: bold;
}
