/*
 * Copyright (c) 2003-2024, CKSource Holding sp. z o.o. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */

:root {
	--ck-color-image-upload-icon: hsl(0, 0%, 100%);
	--ck-color-image-upload-icon-background: hsl(120, 100%, 27%);

	/* Match the icon size with the linked image indicator brought by the link image feature. */
	--ck-image-upload-icon-size: 20;
	--ck-image-upload-icon-width: 2px;
	--ck-image-upload-icon-is-visible: clamp(0px, 100% - 50px, 1px);
}

.ck-image-upload-complete-icon {
	opacity: 0;
	background: var(--ck-color-image-upload-icon-background);
	animation-name: ck-upload-complete-icon-show, ck-upload-complete-icon-hide;
	animation-fill-mode: forwards, forwards;
	animation-duration: 500ms, 500ms;

	/* To make animation scalable. */
	font-size: calc(1px * var(--ck-image-upload-icon-size));

	/* Hide completed upload icon after 3 seconds. */
	animation-delay: 0ms, 3000ms;

	/*
	 * Use CSS math to simulate container queries.
	 * https://css-tricks.com/the-raven-technique-one-step-closer-to-container-queries/#what-about-showing-and-hiding-things
	 */
	overflow: hidden;
	width: calc(var(--ck-image-upload-icon-is-visible) * var(--ck-image-upload-icon-size));
	height: calc(var(--ck-image-upload-icon-is-visible) * var(--ck-image-upload-icon-size));

	/* This is check icon element made from border-width mixed with animations. */
	&::after {
		/* Because of border transformation we need to "hard code" left position. */
		left: 25%;

		top: 50%;
		opacity: 0;
		height: 0;
		width: 0;

		transform: scaleX(-1) rotate(135deg);
		transform-origin: left top;
		border-top: var(--ck-image-upload-icon-width) solid var(--ck-color-image-upload-icon);
		border-right: var(--ck-image-upload-icon-width) solid var(--ck-color-image-upload-icon);

		animation-name: ck-upload-complete-icon-check;
		animation-duration: 500ms;
		animation-delay: 500ms;
		animation-fill-mode: forwards;

		/* #1095. While reset is not providing proper box-sizing for pseudoelements, we need to handle it. */
		box-sizing: border-box;
	}

	@media (prefers-reduced-motion: reduce) {
		animation-duration: 0ms;

		&::after {
			animation: none;
			opacity: 1;
			width: 0.3em;
			height: 0.45em;
		}
	}
}

@keyframes ck-upload-complete-icon-show {
	from {
		opacity: 0;
	}

	to {
		opacity: 1;
	}
}

@keyframes ck-upload-complete-icon-hide {
	from {
		opacity: 1;
	}

	to {
		opacity: 0;
	}
}

@keyframes ck-upload-complete-icon-check {
	0% {
		opacity: 1;
		width: 0;
		height: 0;
	}
	33% {
		width: 0.3em;
		height: 0;
	}
	100% {
		opacity: 1;
		width: 0.3em;
		height: 0.45em;
	}
}
