:root {
	/*colors*/
	--color-red: #97114f;
	--color-green: #357f00;
	--color-yellow: #e99700;
	--color-blue: #0000a8;
	--color-text: #2f2f2f;
	/*breakpoints: use with min-width*/
	--mobile: 0px;
	--tablet: 768px;
	--laptop: 1200px;
	--desktop: 1366px;
}
html {
	scroll-behavior: smooth;
}
* {
	box-sizing: border-box;
	margin: 0;
}
body {
	font-family: 'Open Sans', Arial, Helvetica, sans-serif;
	color: var(--color-text);
	font-size: 16px;
}
#app {
	max-width: 1200px;
	margin: 10px;
}
.logo {
	max-width: 100px;
}
.header {
	display: grid;
	justify-items: center;
}
.intro {
	display: grid;
	justify-items: center;
	justify-content: center;
}
.graph-design__img {
	max-width: 60%;
}
.intro__title {
	color: var(--color-red);
	font-family: 'Open Sans', Arial, Helvetica, sans-serif;
	font-weight: bold;
	text-align: center;
	font-size: 1.5rem;
	margin-top: -1em;
}
.intro__description {
	color: var(--color-text);
	font-family: 'Open Sans', Arial, Helvetica, sans-serif;
	text-align: center;
}
.intro__button {
	text-decoration: none;
	color: #fff;
	background: var(--color-green);
	padding: 0.5em 2em;
	margin: 1em 0;
	border-radius: 3px;
	font-weight: bold;
}
.howto {
	display: grid;
	justify-items: center;
	grid-gap: 1em;
	margin-top: 1em;
}
.howto_title {
	color: var(--color-red);
	font-family: 'Open Sans', Arial, Helvetica, sans-serif;
	font-weight: bold;
}
.howto_desc_container {
	display: grid;
	justify-items: center;
	justify-content: center;
	align-items: start;
	grid-template-columns: repeat(3, minmax(50px, 200px));
	grid-gap: 1em;
}
.howto_desc_elem {
	display: grid;
	justify-items: center;
	justify-content: center;
}
.howto_desc_img {
	max-width: 50px;
}
.howto_desc_desc {
	font-size: 0.8rem;
	text-align: center;
	padding-top: 0.5rem;
	font-weight: bold;
}
#canvas_container {
	border: 1px solid #e1e4e8;
	border-radius: 1px;
	margin-top: 2em;
	background: rgb(255, 254, 252);
	padding: 1em;
	display: grid;
	grid-template-columns: auto;
	grid-gap: 1em;
	align-items: start;
}
.canvas {
	overflow-y: hidden; /* Hide vertical scrollbar */
	overflow-x: scroll;
	position: relative;
	height: 877px;
}
.canvas_nav {
	grid-column: 1/-1;
	display: flex;
	justify-content: flex-start;
}
.canvas_nav__left {
	display: flex;
	align-items: center;
	background: #fff;
	box-shadow: 0 3px 10px #e1e4e8;
	padding: 1em 1.5em;
	border-radius: 1px;
	gap: 1rem;
}
.canvas__logo {
	max-width: 75px;
}
.vl {
	align-self: stretch;
	border-left: 2px solid #e1e4e8;
}
.canvas__name {
	font-weight: bold;
}
.canvas_edit-icon {
	max-width: 18px;
	cursor: pointer;
}
.canvas_sidebar {
	display: grid;
	background: #fff;
	box-shadow: 0 3px 10px #e1e4e8;
	padding: 1.5em;
	border-radius: 1px;
	justify-self: stretch;
	grid-gap: 1.5em;
	grid-template-columns: repeat(auto-fit, minmax(20px, 50px));
}
.canvas_sidebar__icons {
	max-width: 20px;
}
svg:hover {
	fill: var(--color-blue);
}
.active_tool {
	fill: var(--color-red);
}
.canvas_tooltip {
	position: relative;
	display: grid;
	place-items: center;
	cursor: pointer;
}
.canvas_tooltip_text {
	visibility: hidden;
	min-width: 120px;
	background-color: #fff;
	box-shadow: 0 3px 10px #d9d9da;
	color: #2f2f2f;
	text-align: center;
	padding: 0.5em 1em;
	border-radius: 2px;
	position: absolute;
	top: -100%;
	left: 4em;
	z-index: 1;
	font-size: 12px;
}
.canvas_tooltip_title {
	color: var(--color-red);
	font-weight: bold;
}
.canvas_tooltip:hover .canvas_tooltip_text {
	visibility: visible;
}
.canvas_history {
	display: grid;
	background: #fff;
	box-shadow: 0 3px 10px #e1e4e8;
	padding: 1.5em;
	border-radius: 1px;
	justify-self: stretch;
	grid-gap: 1em;
	grid-template-rows: auto 1fr auto;
	align-self: stretch;
}
.canvas_history_nav {
	display: flex;
	gap: 1em;
	align-items: center;
	border-bottom: 1px solid #eee;
	padding-bottom: 1em;
}
.canvas_history_top_icon,
.canvas_add_line {
	max-width: 20px;
}
.canvas_history_title {
	font-weight: bold;
}
.canvas_line_title {
	border-bottom: 1px solid #eee;
	padding-bottom: 0.2em;
	padding-top: 0.2em;
}
.canvas_line_container {
	display: grid;
	grid-gap: 0.5em;
	margin-top: 15px;
}
.canvas_history__point {
	display: flex;
	background: #fff;
	box-shadow: 0 3px 10px #c2c2c2;
	padding: 1em 0.5em;
	border-radius: 1px;
	border-left: 4px solid transparent;
	gap: 1em;
	justify-content: space-between;
	align-items: center;
}
.canvas_history_dimension {
	font-weight: bold;
}
.canvas_history__point:hover {
	border-left: 4px solid var(--color-blue);
}
.canvas_drag_icon {
	max-width: 20px;
	cursor: grab;
	user-drag: none;
	user-select: none;
	-moz-user-select: none;
	-webkit-user-drag: none;
	-webkit-user-select: none;
	-ms-user-select: none;
}
.canvas_drag_axis {
	display: flex;
	gap: 1em;
}
.canvas_drag_icon:active {
	cursor: grabbing;
}
.add_point_into_group {
	display: flex;
	gap: 1em;
	cursor: pointer;
	margin-top: 0.5em;
	margin-left: 1em;
}
.add_point_into_group img {
	max-width: 20px;
}
.add_point_into_group p {
	color: #bbb;
}
#canvas_add_line {
	color: var(--color-green);
	font-weight: bold;
	display: flex;
	gap: 0.5rem;
	align-items: center;
	cursor: pointer;
}
.canvas_history_actions {
	display: flex;
	gap: 1em;
	align-items: center;
	justify-self: flex-end;
}
.canvas_history_body {
	display: grid;
	grid-gap: 1.5em;
}
.canvas_delete_icon {
	max-width: 20px;
	cursor: pointer;
	user-drag: none;
	user-select: none;
	-moz-user-select: none;
	-webkit-user-drag: none;
	-webkit-user-select: none;
	-ms-user-select: none;
}
input[type='checkbox'] {
	cursor: pointer;
}
.canvas_delete_all {
	display: flex;
	justify-content: flex-end;
	align-items: center;
	gap: 1em;
	margin-right: 0.5em;
	margin-top: 2em;
}
.canvas_delete_all p {
	color: var(--color-red);
	font-weight: bold;
}

#multiple_delete_action {
	cursor: pointer;
}

.line_upper_div {
	display: flex;
	align-items: center;
	justify-content: space-between;
}
@media screen and (min-width: 768px) {
	.graph-design__img {
		max-width: 300px;
	}
	.intro__title {
		margin-top: -2em;
	}
	.intro__description {
		margin-top: -1em;
	}
	.howto_desc_img {
		max-width: 75px;
	}
	.canvas__logo {
		max-width: 100px;
	}
	#canvas_container {
		grid-template-columns: auto 2fr 1fr;
		grid-gap: 7em 3em;
	}
	.canvas_sidebar {
		justify-self: start;
		grid-template-columns: auto;
	}
}
@media screen and (min-width: 1200px) {
	#app {
		margin: 10px auto;
	}
	.intro__title {
		font-size: 2rem;
		margin-top: -1em;
	}
	.intro__description {
		margin-top: 0em;
	}
}

#background-canvas {
	position: absolute;
	left: 0;
	top: 0;
	z-index: 0;
}

#canvas {
	position: absolute;
	left: 20px;
	top: 20px;
	z-index: 2;
	cursor: none;
}

#canvas-pen {
	position: absolute;
	left: 20px;
	top: 20px;
	z-index: 1;
	cursor: none;
}

#canvas-virtual {
	position: absolute;
	left: 20px;
	top: 20px;
	z-index: 1;
	cursor: none;
}

.canvas_input {
	font-size: 12px;
	position: absolute;
	z-index: 3;
	resize: both;
	padding: 7px 10px;
}

.dont_drag {
	user-drag: none;
	user-select: none;
	-moz-user-select: none;
	-webkit-user-drag: none;
	-webkit-user-select: none;
	-ms-user-select: none;
}

#canvas-tooltip {
	position: absolute;
	border: 2px solid black;
	width: 75px;
	visibility: hidden;
	display: flex;
	justify-content: center;
}

#canvas-tooltip .data_x,
#canvas-tooltip .data_y {
	font-weight: bold;
	font-size: 16px;
}

#canvas-tooltip .data_x {
	margin-left: 4px;
}

#canvas-tooltip .vll {
	border-left: 2px solid black;
	margin: 0 4px;
	align-self: stretch;
}

#canvas-tooltip .data_y {
	margin-right: 4px;
}

#canvas-tooltip::after {
	content: ' ';
	position: absolute;
	right: 22px;
	bottom: -15px;
	border-top: 15px solid black;
	border-right: 15px solid transparent;
	border-left: 15px solid transparent;
	border-bottom: none;
}

footer {
	max-width: 1200px;
	margin: 20px auto 0;
}

#canvas-eraser {
	visibility: hidden;
	position: absolute;
	width: 30px;
	height: 30px;
}

#canvas-eraser img {
	width: 100%;
}

.ad {
	max-width: 1200px;
}