/* @group RESET */

html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, picture, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, menu, nav, output, ruby, section, summary, time, mark, audio, video {margin: 0; padding: 0; border: 0; font-size: 100%; font: inherit; vertical-align: baseline;}

*, *:before, *:after {box-sizing: border-box;}

abbr[title] {border-bottom: none; text-decoration: underline; text-decoration: underline dotted; cursor: help;}
strong {font-weight: bolder;}
em, dfn {font-style: italic;}
mark {background: #ff0; color: #000;}
small {font-size: 80%;}
sub, sup {font-size: 75%; line-height: 0; position: relative; vertical-align: baseline;}
sup {top: -0.5em;}
sub {bottom: -0.25em;}

a[href] {cursor: pointer;}

button, input, optgroup, select, textarea {color: inherit; font: inherit; margin: 0;} /* remove color inheritance if working on white-on-black-background */
button, input {overflow: visible;}
button, select {text-transform: none;}
button, html [type="button"], [type="reset"], [type="submit"] {-webkit-appearance: button;}
button::-moz-focus-inner, [type="button"]::-moz-focus-inner, [type="reset"]::-moz-focus-inner, [type="submit"]::-moz-focus-inner {border-style: none; padding: 0;}
input {line-height: normal;}
[type="checkbox"], [type="radio"] {padding: 0;}
[type="number"]::-webkit-inner-spin-button, [type="number"]::-webkit-outer-spin-button {height: auto;}
[type="search"] {-webkit-appearance: textfield;}
[type="search"]::-webkit-search-cancel-button, [type="search"]::-webkit-search-decoration {-webkit-appearance: none;}
::-webkit-file-upload-button {-webkit-appearance: button; font: inherit;}
progress {display: inline-block; vertical-align: baseline;}
textarea {overflow: auto;}

[role="button"], label, select, button, [type="button"], [type="checkbox"], [type="file"], [type="image"], [type="radio"], [type="reset"], [type="submit"] {cursor: pointer;} /* purely opninionated https://github.com/necolas/normalize.css/issues/371#issuecomment-60072171 - https://github.com/necolas/normalize.css/pull/563 - https://datagif.slack.com/archives/ui-ux/p1479143093000007 */
[disabled] {cursor: default;}

:lang(fr) {quotes: "\00ab\00a0" "\00a0\bb" "\201c" "\201d";} /* « … “…” … » */
:lang(en) {quotes: "\201c" "\201d" "\2018" "\2019";} /* “ … ‘…’ … ” */
q::before, blockquote > p::before {content: open-quote;}
q::after, blockquote > p::after {content: close-quote;}

/* @end */

/* @group BASE */

:root {
	--color-text: #333;
	--color-page-background: #f6f8fa;
	--color-field-background: #fff;
	--color-field-background-alt: #c2c2C2;
	--color-field-background-active: #ddd;
	--color-field-border: #999;
	--color-field-border-hover: #666;
	--color-field-border-active: #555;
	--color-field-accent: #0074d9;
	--color-field-accent-active: #84c6ff;
}

@media (prefers-color-scheme: dark) {
	:root {
		--color-text: #d2dce6;
		--color-page-background: #0f1820;
		--color-field-background: #263440;
		--color-field-background-alt: #8a8a8a;
		--color-field-background-active: #ddd;
		--color-field-border: #828282;
		--color-field-border-hover: #666;
		--color-field-border-active: #555;
		--color-field-accent: #0074d9;
		--color-field-accent-active: #84c6ff;
	}
}

html {
	height: 100%;
	color: var(--color-text);
	font: 1em/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

body {
	min-height: 100%;
	background-color: var(--color-page-background);
	cursor: default;
}

/* @end */

/* @group LAYOUT */

:root {
	--page-padding: 20px;
}

@media (min-width: 1100px) {
	:root {--page-padding: 40px;}
}

.fields {
	padding: var(--page-padding) var(--page-padding);
}

.result {
	padding: var(--page-padding) 20px;
}

@media (min-width: 900px) {
	
	.fields {
		width: 65%;
	}
	
	.result {
		position: fixed;
		top: 0;
		right: 0;
		width: 35%;
		height: 100%;
	}
	
}

@media (max-width: 899px) {
	
	.result {
		padding-bottom: 7rem;
	}
	
	.result-section.--mobile_fixed {
		position: fixed;
		bottom: 0;
		left: 0;
		width: 100%;
		padding: 10px var(--page-padding);
		background-color: var(--color-page-background);
		box-shadow: 0 5px 5px 5px rgba(0, 0, 0, 0.3);
	}
	
}

/* @end */

/* @group FORMS */

input[type="number"] {
	border: 1px solid var(--color-field-border);
	background-color: var(--color-field-background);
	border-radius: .25rem;
	padding: 0 0.6em;
	line-height: 2.2;
	outline: none;
}

input[type="number"]:not(:focus) {
	box-shadow: inset 0 1px 1px -1px rgba(0,0,0,0.2);
}

button {
	border: 1px solid var(--color-field-border);
	background-color: #f8f8f8;
	border-radius: .25rem;
	padding: .5em .8em;
}

input[type="number"]:hover, input[type="number"]:focus,
button:hover {
	border-color: var(--color-field-border-hover);
}

input[type="number"]:focus,
button:focus {
	box-shadow: 0 0 1px 3px rgba(0, 140, 255, 0.5);
}

button:active {
	background-color: #ddd;
	border-color: #b7b7b7;
}

.control-field {
	position: relative;
}

	.control-field input {
		position: absolute;
		opacity: 0;
		z-index: -1;
	}

.control-field .control-indicator {
	display: inline-block;
	width: 1rem;
	height: 1rem;
	vertical-align: -0.1em;
	-webkit-user-select: none;
	   -moz-user-select: none;
	    -ms-user-select: none;
	        user-select: none;
	border: 1px solid var(--color-field-border);
	background-color: var(--color-field-background);
	background-size: 50% 50%;
	background-position: center center;
	background-repeat: no-repeat;
}

	.control-field input:checked + .control-indicator,
	.control-field input:active + .control-indicator {border: 0 none;}

	.control-field input:checked + .control-indicator {background-color: var(--color-field-accent);}

	.control-field:hover > .control-indicator {border-color: var(--color-field-border-hover);}

	.control-field input:active + .control-indicator {background-color: var(--color-field-accent-active);}

	.control-field input:focus + .control-indicator {box-shadow: 0 0 1px 3px rgba(0, 140, 255, 0.5);}

/* Checkbox */

.control-field input[type="checkbox"] + .control-indicator {
	border-radius: .25rem;
}
.control-field input[type="checkbox"]:checked + .control-indicator {
	background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3E%3Cpath fill='%23ffffff' d='M6.4 1l-.7.7-2.8 2.8-.8-.8-.7-.7-1.4 1.4.7.7 1.5 1.5.7.7.7-.7 3.5-3.5.7-.7-1.4-1.4z'/%3E%3C/svg%3E");
}

/* Radio */

.control-field input[type="radio"] + .control-indicator {
	border-radius: 50%;
}
.control-field input[type="radio"]:checked + .control-indicator {
	background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3E%3Cpath fill='%23ffffff' d='M4 1c-1.7 0-3 1.3-3 3s1.3 3 3 3 3-1.3 3-3-1.3-3-3-3z'/%3E%3C/svg%3E");
}

/* Range */

input[type=range] {
	height: 20px;
	cursor: pointer;
	background-color: transparent;
	-webkit-appearance: none; appearance: none;
}

input[type=range]::-webkit-slider-runnable-track,
input[type=range]::-webkit-slider-thumb {
	-webkit-appearance: none; appearance: none;
}

input[type=range]::-moz-range-track,
input[type=range]::-moz-range-progress,
input[type=range]::-moz-range-thumb {
	-moz-appearance: none; appearance: none;
}

input[type=range]::-webkit-slider-runnable-track {
	width: 100%;
	height: 5px;
	border-radius: 10px;
	background-color: var(--color-field-background-alt);
	border: none;
}

input[type=range]::-moz-range-track,
input[type=range]::-moz-range-progress {
	width: 100%;
	height: 5px;
	border-radius: 10px;
	background-color: var(--color-field-background-alt);
}

input[type=range]::-moz-range-progress {background-color: #0074d9;}

input[type=range]::-webkit-slider-thumb {
	width: 20px;
	height: 20px;
	border: 2px solid var(--color-field-border);
	border-radius: 10px;
	background-color: var(--color-field-background);
	margin-top: -8px;
}

input[type=range]::-moz-range-thumb {
	width: 16px;
	height: 16px;
	border: 2px solid var(--color-field-border);
	border-radius: 10px;
	background-color: var(--color-field-background);
}

input[type=range]:hover::-webkit-slider-thumb {border-color: var(--color-field-border-hover);}
input[type=range]:hover::-moz-range-thumb {border-color: var(--color-field-border-hover);}

input[type=range]:active::-webkit-slider-thumb {background-color: var(--color-field-background-active);}
input[type=range]:active::-moz-range-thumb {background-color: var(--color-field-background-active);}

/* @end */

/* @group FIELDS */

.fields {
	
}

.fieldset {
	
}

	.fieldset-title {
		
	}
	
		.fieldset-name {
			display: inline-block;
			font-weight: 700;
		}
		
		.fieldset-description {
			display: block;
			font-size: 0.8rem;
		}
	
	.fieldset-controls {
		flex-grow: 1;
	}

@media (min-width: 600px) {
	
	.fieldset {
		display: flex;
		margin-bottom: 40px;
	}
	
		.fieldset-title {
			width: 18%;
			flex-shrink: 0;
			margin-right: 40px;
		}
		
		.fieldset-controls {
			flex-grow: 1;
		}
	
}

@media (max-width: 599px) {
	.fieldset:not(:last-child) {
		margin-bottom: 20px;
	}
	
	.fieldset-title {
		margin-bottom: 10px;
	}
}

.range {
	
}

	.range-slider {
		width: 100%;
		max-width: 600px;
	}
	
		.range-slider input[type=range] {
			width: 100%;
		}
		
		.range-slider-ticks {
			display: block;
			position: relative;
			width: calc(100% - 20px);
			left: 10px;
			font-size: 0.75rem;
			height: 2em;
			margin-top: -12px;
			z-index: -1;
		}
		
			.range-slider-tick {
				display: inline-block;
				position: absolute;
				line-height: 1;
				border-left: 1px solid var(--color-field-background-alt);
				padding-top: 12px;
				padding-left: 2px;
				margin-top: -2px;
				left: calc(1% * var(--pos));
			}
	
	.range-input {
		width: 10em;
		margin-top: 0.05em;
	}
	
	.range-output {
		display: none;
	}

@media (min-width: 1100px) {
	.range {
		display: flex;
		gap: 20px;
		align-items: flex-start;
	}
}

@media (max-width: 1099px) {
	.range-input {
		margin-top: 10px;
	}
}

@media (max-width: 399px) {
	.range-slider-ticks {
		font-size: 0.6rem;
	}
}

.radio {
	
}

	.radio-option {
		display: block;
	}
	
		.radio-option input[type="radio"] {
			
		}
	
	.radio-label {
		
	}

@media (min-width: 900px) {
	.radio {
		display: flex;
		flex-direction: column;
		gap: 20px;
	}
	
	.radio.--inline {
		flex-direction: row;
		gap: 40px;
	}
}

@media (max-width: 899px) {
	.radio-option:not(:last-child) {
		margin-bottom: 10px;
	}
}

/* @end */

/* @group RESULT */

.result {
	
}

	.result-title {
		font-size: 0.8rem;
		font-weight: 700;
		margin-bottom: 5px;
	}

@media (min-width: 900px) {
	.result-section:not(:first-child) .result-title {
		margin-top: 20px;
	}
}

.permalink {
	display: inline-block;
	border: 0 none;
	width: 36px;
	height: 18px;
	margin-left: 0.2em;
	padding: 0 10px;
}

	.permalink svg {
		width: 100%;
		height: auto;
		fill: var(--color-text);
	}
	
	.permalink.--js-valid svg {
		animation: permalink-valid-anim 1.2s ease 1 forwards;
	}
	
	@keyframes permalink-valid-anim {
		0%   {fill: #10cc00;}
		60%  {fill: #118a07;}
		100% {fill: var(--color-text);}
	}

/* @end */

/* @group FORMULA */

.formula {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	margin-bottom: 5px;
}

	.formula-var,
	.formula-val,
	.formula-op {
		display: inline-block;
	}

	.formula-part {
		display: flex;
		align-items: baseline;
		justify-content: center;
	}
	
	.formula-var {
		position: relative;
		padding-top: 1.2em;
	}
	
		.formula-var-name {
			display: block;
			position: absolute;
			top: 0;
			width: 100%;
			font-size: 0.7em;
			font-weight: 600;
			font-style: italic;
			padding-left: 2px;
			padding-bottom: 2px;
			border-bottom: 1px dotted;
		}
		
		.formula-var-name em {font-family: Georgia, serif;}
	
	.formula-val {
		min-width: 2em;
		text-align: center;
	}
	
	.formula-op {
		margin-left: 0.4em;
		margin-right: 0.4em;
	}
	
		.formula-op.--spaced {
			margin-left: 0.6em;
			margin-right: 0.6em;
		}
	
	.formula-part.--fract {
		flex-direction: column;
		align-items: stretch;
	}
	
		.formula-part.--fract > .--fract_top,
		.formula-part.--fract > .--fract_bottom {
			padding-left: 0.3em;
			padding-right: 0.3em;
		}
		
		.formula-part.--fract > .--fract_top {
			
		}
		
		.formula-part.--fract > .--fract_bottom {
			border-top: 1px solid;
			margin-top: 1px;
		}
	
	.formula > .formula-part:not(.--fract) {margin-top: -0.3em;}
	.formula:not(.--js-p1) .--js-p1_step {display: none;}

/* @end */

/* @group JS ALERT */

.js_alert-overlay {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background-color: rgba(0, 0, 0, 0.3);
}

.js_alert {
	width: 100%;
	color: #222;
	background-color: #FFF3B8;
	text-align: center;
	z-index: 1000;
	font: 300 1em/1.3em Helvetica, sans-serif;
	padding: 1.2em 0 1.6em;
}

	.js_alert p:not(:last-of-type) {margin-bottom: 0.6em;}
	.js_alert a {color: inherit;}

/* @end */