style.css

/*
 * Copyright (c) 2013 Lea Verou. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 */

/**
 * Variables
 */
* {
	margin: 0;
}

#preview > canvas,
#library > a,
header > p {
	transition: 1s;
}

#importexport > textarea,
code {
	font-family: Consolas, 'Andale Mono', monospace;
}

/**
 * Styles
 */
body {
	display: grid;
	grid-template:
		'curve header header' auto
		'curve preview library' auto
		'curve . .' auto / 300px 480px 1fr;
	gap: 2rem;
	position: relative;
	padding: 1em max(3rem, 5%);
	background: white;
	font-family: 'Hiragino Kaku Gothic Pro', 'Segoe UI', 'Apple Gothic', Tahoma, 'Helvetica Neue', sans-serif;
	line-height: 1.4;
}

h1 {
	font-size: 220%;
}

a {
	color: #f08;
}

a:hover {
	text-decoration: none;
}

	h1 > a {
		font-size: clamp(1.2rem, 2vw + .75rem, 2.5rem);
		white-space: nowrap;
		color: inherit;
		text-decoration: none;
	}

button, .button {
	padding: .3em .5em;
	border: 0;
	background: #ccc;
	color: white;
	font-size: 50%;
	text-transform: uppercase;
	vertical-align: .25em;
	cursor: pointer;
	border-radius: .3em;
}

button:hover, .button:hover {
	background: #f08;
}

button:focus, .button:focus {
	box-shadow: 0 0 5px 2px yellow;
}

#copybuttons {
	display: inline-flex;
	vertical-align: middle;
	position: relative;
}

#copybuttons.copyoptions-open {
	width: auto;
}

#copybuttons.copyoptions-open #copy {
	background-color: #f08;
	border-bottom-left-radius: 0;
}

#copybuttons.copyoptions-open #copyoptionstoggle {
	background-color: #a50b5d;
	border-bottom-right-radius: 0;
	box-shadow: none;
}

#copy {
	border-top-right-radius: 0;
	border-bottom-right-radius: 0;
	padding-right: 0.3em;
	display: block;
	
}

#copyoptions {
	position: absolute;
	top: 100%;
	right: 0;
	background-color: #f08;
	padding: 0.2em 0.3em;
	border-radius: .2em 0 .2em .2em;
	overflow: hidden;
	z-index: 2;
	opacity: 0;
	font-size: 0.1em;
	transition: height 0.5s cubic-bezier(.1,.74,.33,.95);
	height: 20px;
	pointer-events: none;
}

#copyoptions > input {
	opacity: 1;
	background-color: #f08;
	margin-bottom: 0.4em;
	margin-top: 0.4em;
	display: block;
	text-transform: none;
	font-size: 0.65em;
	font-weight: 700;
	color: #fff;
	border: 0;
	cursor: pointer;
	padding: 0.2em 0.3em;
	border-radius: 0.2em;
	font-family: monospace;
}

#copyoptions > input:hover {
	background: #a50b5d;
}

#copybuttons.copyoptions-open #copyoptions {
	opacity: 1;
	font-size: 1em;
	height: 125px;
	pointer-events: auto;
}

#copyoptionstoggle {
	border-top-left-radius: 0;
	border-bottom-left-radius: 0;
	padding-left: 0.3em;
	display: block;
}

	#copybuttons:hover #copy,
	#copybuttons:hover #copyoptionstoggle {
		background: #f08;
	}

	#copybuttons #copy:hover,
	#copybuttons #copyoptionstoggle:hover,
	#copybuttons.copyoptions-open:hover #copyoptionstoggle {
		background: #a50b5d;
	}

@keyframes copied {
	0%   { background: #599133; }
	100% { background: #ccc; }
}
#copybuttons.copied #copyoptionstoggle,
#copybuttons.copied #copy {
	animation: 1s copied cubic-bezier(.51,.2,.81,.48);
}

input[type="range"] {
	-webkit-appearance: none;
	overflow: hidden;
	border: 1px solid #ddd;
	background: #eee;
	text-align: center;
	font: inherit;
	border-radius: 99px;
	box-shadow: 1px 1px 3px rgba(0,0,0,.5) inset;
}

	input[type="range"]::-webkit-slider-thumb {
		-webkit-appearance: none;
		background: #f8b;
		height: 13px;
		width: 13px;
		border-radius: 50%;
		box-shadow: -1px -1px 5px rgba(0,0,0,.5) inset,
			-1px -1px 4px 3px #f08 inset,
			1px 1px 3px rgba(0,0,0,.3),
			-199px 0 0 198px rgba(255, 0, 136, .2);
	}

	input[type="range"]:in-range {
		width: 14em;
	}

header {
	grid-area: header;
}

	header > h1 {
		display: flow-root;
	}

#curve-display {
	grid-area: curve;
	justify-self: center;
}

.coordinate-plane {
	position: relative;
	margin-top: 2rem;
}

	.coordinate-plane::before,
	.coordinate-plane::after {
		position: absolute;
		bottom: 25%;
		left: 0;
		width: 100%;
		padding: .3em .5em;
		box-sizing: border-box;
		color: rgba(0,0,0,.6);
		text-transform: uppercase;
		font-size: 75%;
		line-height: 1;
	}

	.coordinate-plane::before {
		content: 'Progression';
		border-bottom: 1px solid;
		transform: rotate(-90deg);
		transform-origin: bottom left;
	}

	.coordinate-plane::after {
		content: 'Time';
		border-top: 1px solid;
		margin-bottom: -1.5em;
	}

	.coordinate-plane:hover::before {
		content: 'Progression (' attr(data-progression) '%)';
	}

	.coordinate-plane:hover::after {
		content: 'Time (' attr(data-time) '%)';
	}

#save {
	position: absolute;
	bottom: 90px;
	z-index: 0;
	right: 1em;
	font-size: 1em;
}

.control-point {
	position: absolute;
	z-index: 1;
	height: 20px;
	width: 20px;
	border: 1px solid rgba(0,0,0,.3);
	margin: -10px 0 0 -10px;
	outline: none;
	box-sizing: border-box;
	border-radius: 10px;
}

#P0, #P3 {
	background: white;
	pointer-events: none;
}

#P1, #P2 {
	cursor: pointer;
}

#P0 {
	left: 0;
	top: 75%;
}

#P1 {
	background: #f08;
}

#P2 {
	background: #0ab;
}

#P3 {
	left: 100%;
	top: 25%;
}

#P1x, #P1y {
	color: #f08;
}

#P2x, #P2y {
	color: #0ab;
}

canvas#curve {
	background: #f0f0f0;
	background: linear-gradient(-45deg, transparent 49%, rgba(0,0,0,.1) 49%, rgba(0,0,0,.1) 51%, transparent 51%) center no-repeat,
		repeating-linear-gradient(white, white 20px, transparent 20px, transparent 40px) no-repeat,
		linear-gradient(transparent, rgba(0,0,0,.06) 25%, rgba(0,0,0,.06) 75%, transparent);
	background-size: 100% 50%, 100% 50%, auto;
	background-position: 25%, 0, 0;

	-webkit-user-select: none;
	user-select: none;
}

section {}

	section > h1 {
		margin-bottom: .2em;
		font-size: 200%;
		font-weight: normal;
	}

	section > h1 + p {
		margin: -.5em 0 1em 0;
		color: gray;
	}

#preview {
	grid-area: preview;
	position: relative;
}

	#preview > canvas {
		display: block;
		position: relative;
		left: 0;
		margin-bottom: .5em;
		background: #0ab;
		border-radius: 5px;
	}

	#preview > #current {
		background: #f08;
	}

	#preview > .move {
		left: 100%;
		transform: translateX(-100%);
	}

#library {
	grid-area: library;
}

#library > a {
	position: relative;
	float: left;
	width: 100px;
	margin: 0 .8em 1em 0;
	color: #999;
	font-size: 110%;
	text-align: center;
	text-decoration: none;
	cursor: pointer;

}

	#library > a > canvas,
	#library > a > span {
		transition: inherit;
	}

	#library > a > canvas {
		display: block;
		position: relative;
		left: 0;
		background: #e5e5e5;

		border-radius: 5px;
	}

	#library > a:hover > canvas,
	#library > a:focus > canvas {
		background: #ACD0D5;
	}

	#library > a > span {
		display: block;
		overflow: hidden;
		white-space: nowrap;
		text-overflow: ellipsis;
	}

	#library > a:hover > span,
	#library > a:focus > span {
		color: #568C93;
	}

	#library > a > button {
		display: none;
		position: absolute;
		top: -5px;
		right: -5px;
		background: black;
		font-size: 80%;
		border-radius: 50%;
		box-shadow: 1px 1px 8px -1px black;
	}

	#library > a > button:hover {
		background: #f08;
	}

	#library > a:hover > button,
	#library > a:focus > button {
		display: block;
	}

#library > a.selected {
	color: #0ab;
}

		#library > a.selected > canvas {
			background: #0ab;
		}

#library > footer {
	clear: both;
	font-size: 80%;
	color: #444;
}

#importexport {
	position: fixed;
	top: 2em;
	left: 50%;
	z-index: 2;
	width: 500px;
	padding: 1em 2.6em 1em 1em;
	margin-left: -250px;
	background: rgba(0, 0, 0, .7);
	color: white;
	text-align: center;
	border-radius: .8em;
}

#importexport:not([class]) {
	display: none;
}

	#importexport > label {
		display: block;
		font-weight: bold;
		text-shadow: 1px 1px 2px black;
	}

	#importexport > textarea {
		display: block;
		width: 100%;
		height: 20em;
		padding: .8em;
		border: 1px solid black;
		margin: .5em 0;
		background: rgba(255, 255, 255, .85);
		font-size: inherit;
		text-shadow: 0 1px white;
		border-radius: .3em;
		box-shadow: .1em .1em .4em rgba(0,0,0,.5) inset;
	}

	#importexport > button {
		font-size: 120%;
	}

	#importexport > button:not(:hover) {
		background: black;
	}

	#importexport.export > button:first-of-type,
	#importexport.export > label:first-of-type,
	#importexport.import > label:nth-of-type(2) {
		display: none;
	}

body > footer {
	grid-area: footer;
	padding: .5em 0;
	max-width: 100%;
	font-size: 120%;
	color: rgba(0, 0, 0, .1);
	box-sizing: border-box;
}

	body > footer > a {
		font-weight: bold;
	}

	body > footer > a:not(:hover) {
		color: inherit;
	}

	body > footer > a.button {
		padding: .5em .6em;
		color: white;
		text-decoration: none;
		font-size: 65%;
		background: #ddd;
	}

@media (max-width: 1330px){
	body {
		grid-template:
			'curve header'
			'curve preview'
			'curve library' / 300px 1fr;
	}
}

@media (max-width: 1000px){
	body {
		grid-template:
			'header header'
			'curve preview'
			'curve library' / 300px 1fr;
	}

	header {
		text-align: center;
	}

	header > h1 {
		display: flex;
		flex-wrap: wrap;
		justify-content: center;
		align-items: center;
	}
}

@media (max-width: 850px){
	body {
		grid-template:
			'footer'
			'header'
			'curve'
			'preview'
			'library';
		padding: 0 5% 1em;
	}

	h1 > a {
		width: 100%;
	}

	#copybuttons {
		margin-left: auto;
	}
}

@media not all and (max-width: 850px){
	body > footer {
		position: fixed;
		top: 1em;
		right: 100%;
		transform: rotate(-90deg);
		transform-origin: top right;
		white-space: nowrap;
	}
}

@media (max-width: 600px){
	h1 > a {
		letter-spacing: -.05ch;
	}
}

/* Carbon Ads */

#carbonads {
	display: block;
	overflow: hidden;
	margin: 2em auto 0;
	padding: 1em;
	max-width: 360px;
	border: solid 1px hsl(0, 0%, 88%);
	border-radius: 4px;
	background-color: #f4f4f4;
	box-shadow: inset 0 1px #fafafa;
	font-size: 12px;
	line-height: 1.5;
}

#carbonads a {
	color: #4d4d4d;
	text-decoration: none;
	text-shadow: 0 1px #fafafa;
	transition: color .15s ease-in-out;
}

#carbonads a:hover { color: #ff0088; }

	#carbonads span {
		position: relative;
		display: block;
		overflow: hidden;
	}

	.carbon-img {
		float: left;
		margin-right: 1em;
	}

	.carbon-img img { display: block; }

	.carbon-text {
		display: block;
		float: left;
		max-width: calc(100% - 130px - 1em);
		text-align: left;
	}

	.carbon-poweredby {
		position: absolute;
		right: 0;
		bottom: 0;
		display: block;
		font-size: 11px;
	}