main.css

:root {
	--color-blue: #049EF4;
	--text-color: #444;
	--secondary-text-color: #9e9e9e;

	--font-size: 16px;
	--line-height: 26px;

	--border-style: 1px solid #E8E8E8;
	--header-height: 48px;
	--panel-width: 300px;
	--panel-padding: 16px;
	--icon-size: 20px;
}

@font-face {
	font-family: 'Roboto Mono';
	src: local('Roboto Mono'), local('RobotoMono-Regular'), url('../files/RobotoMono-Regular.woff2') format('woff2');
	font-style: normal;
	font-weight: 400;
}
@font-face {
	font-family: 'Roboto Mono';
	src: local('Roboto Mono Medium'), local('RobotoMono-Medium'), url('../files/RobotoMono-Medium.woff2') format('woff2');
	font-style: normal;
	font-weight: 500;
}

* {
	box-sizing: border-box;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

html, body {
	height: 100%;
}

html {
	font-size: calc(var(--font-size) - 1px);
	line-height: calc(var(--line-height) - 1px);
}

body {
	font-family: 'Roboto Mono', monospace;
	margin: 0px;
	color: var(--text-color);
	background-color: #ffffff;
}

a {
	text-decoration: none;
}

h1 {
	font-size: 18px;
	line-height: 24px;
	font-weight: 500;
}

h2 {
	padding: 0;
	margin: 16px 0;
	font-size: calc(var(--font-size) - 1px);
	line-height: var(--line-height);
	font-weight: 500;
	color: var(--color-blue);
}

h3 {
	margin: 0;
	font-weight: 500;
	font-size: calc(var(--font-size) - 1px);
	line-height: var(--line-height);
	color: var(--secondary-text-color);
}

h1 a {
	color: var(--color-blue);
}

#header {
	display: flex;
	height: var(--header-height);
	border-bottom: var(--border-style);
	align-items: center;
}
#header h1 {
	padding-left: var(--panel-padding);
	flex: 1;
	display: flex;
	align-items: center;
	color: var(--color-blue);
}
#header #version {
	border: 1px solid var(--color-blue);
	color: var(--color-blue);
	border-radius: 4px;
	line-height: 16px;
	padding: 0px 2px;
	margin-left: 6px;
	font-size: .9rem;
}

#panel {
	position: fixed;
	z-index: 100;
	left: 0px;
	width: var(--panel-width);
	height: 100%;
	overflow: auto;
	border-right: var(--border-style);
	display: flex;
	flex-direction: column;
	transition: 0s 0s height;
}

	#panel #exitSearchButton {
		width: 48px;
		height: 48px;
		display: none;
		background-size: var(--icon-size);
		background-position: 50% 50%;
		background-repeat: no-repeat;
		background-image: url(../files/ic_close_black_24dp.svg);
		cursor: pointer;
		margin-right: 0px;
	}

	#panel.searchFocused #exitSearchButton {
		display: block;
	}

	#panel.searchFocused #language {
		display: none;
	}

	#panel.searchFocused #filter {
		background-image: none;
		padding-left: 0;
	}

	#panel #expandButton {
		width: 48px;
		height: 48px;
		margin-right: 4px;
		margin-left: 4px;
		display: none;
		cursor: pointer;
		background-size: var(--icon-size);
		background-position: 50% 50%;
		background-repeat: no-repeat;
		background-image: url(../files/ic_menu_black_24dp.svg);
	}

	#panel #sections {
		display: flex;
		justify-content: center;
		z-index: 1000;
		position: relative;
		height: 100%;
		align-items: center;
		font-weight: 500;
	}

	#panel #sections * {
		padding: 0 var(--panel-padding);
		height: 100%;
		position: relative;
		display: flex;
		justify-content: center;
		align-items: center;
	}
	#panel #sections .selected:after {
		content: "";
		position: absolute;
		left: 0;
		right: 0;
		bottom: -1px;
		border-bottom: 1px solid var(--text-color);
	}
	#panel #sections a {
		color: var(--secondary-text-color);
	}

	body.home #panel #sections {
		display: none;
	}

#panel #inputWrapper {
	display: flex;
	align-items: center;
	height: var(--header-height);
	padding: 0 0 0 var(--panel-padding);
	position: relative;
	background: white;
}
#panel #inputWrapper:after {
	position: absolute;
	left: 0;
	right: 0;
	bottom: 0;
	border-bottom: var(--border-style);
	content: "";
}

	#panel #filter {
		flex: 1;
		width: 100%;
		padding: 0 36px;
		font-size: 1rem;
		font-weight: 500;
		color: var(--text-color);
		outline: none;
		border: 0px;
		background-size: var(--icon-size);
		background-image: url(../files/ic_search_black_24dp.svg);
		background-position: 0 50%;
		background-repeat: no-repeat;
		font-family: 'Roboto Mono', monospace;
	}

	#panel #language {
		font-family: 'Roboto Mono', monospace;
		font-size: 1rem;
		line-height: 1rem;
		font-weight: 500;
		color: #444;
		border: 0px;
		background-image: url(ic_arrow_drop_down_black_24dp.svg);
		background-size: var(--icon-size);
		background-repeat: no-repeat;
		background-position: right center;
		background-color: white;
		padding: 2px 24px 4px 24px;
		-webkit-appearance: none;
		-moz-appearance: none;
		appearance: none;
		margin-right: 10px;
	}

		#panel #language:focus {
			outline: none;
		}

	#contentWrapper {
		flex: 1;
		overflow: hidden;
		display: flex;
		flex-direction: column;
		transform: translate3d(0,0,0);
	}
	#panel #content {
		flex: 1;
		overflow-y: auto;
		overflow-x: hidden;
		-webkit-overflow-scrolling: touch;
		padding: 0 var(--panel-padding) var(--panel-padding) var(--panel-padding);
	}

		#panel #content ul {
			list-style-type: none;
			padding: 0px;
			margin: 0px 0 20px 0;
		}
		#panel #content ul li {
			margin: 1px 0;
		}

		#panel #content h2 {
			margin-top: 32px;
			border-top: var(--border-style);
			padding-top: 12px;
		}

		#panel #content h2:first-child {
			margin-top: 16px !important;
			border-top: none;
			padding-top: 0;
		}

		#panel #content a {
			position: relative;
			color: var(--text-color);
		}

		#panel #content a:hover,
		#panel #content a:hover .spacer,
		#panel #content .selected {
			color: var(--color-blue);
		}

		#panel #content .selected {
			text-decoration: underline;
		}

		#panel #content .hidden {
			display: none !important;
		}

		body.home #panel #content h2 {
			margin-bottom: 2px;
			padding-bottom: 0px;
			margin-top: 18px;
			border-top: none;
			padding-top: 6px;
		}

.spacer {
	color: var(--secondary-text-color);
	margin-left: 2px;
	padding-right: 2px;
}

#viewer,
iframe {
	position: absolute;
	border: 0px;
	left: 0;
	right: 0;
	width: 100%;
	height: 100%;
	overflow: auto;
}

#viewer {
	padding-left: var(--panel-width);
}

#button {
	position: fixed;
	bottom: 16px;
	right: 16px;

	padding: 12px;
	border-radius: 50%;
	margin-bottom: 0px;

	background-color: #FFF;
	opacity: .9;
	z-index: 999;

	box-shadow: 0 0 4px rgba(0,0,0,.15);
}
	#button:hover {
		cursor: pointer;
		opacity: 1;
	}
	#button img {
		display: block;
		width: var(--icon-size);
	}

	#button.text {
		border-radius: 25px;
		padding-right: 20px;
		padding-left: 20px;
		color: var(--color-blue);
		opacity: 1;
		font-weight: 500;
	}


#projects {
	display: grid;
	grid-template-columns: repeat(6, 1fr);
	line-height: 0;
}
#projects a {
	overflow: hidden;
}
#projects a img {
	width: 100%;
	transform: scale(1.0);
	transition: 0.15s transform;
}
#projects a:hover img {
	transform: scale(1.08);
}



@media all and ( min-width: 1500px ) {
	#projects {
		grid-template-columns: repeat(7, 1fr);
	}
}

@media all and ( min-width: 1700px ) {
	:root {
		--panel-width: 360px;
		--font-size: 18px;
		--line-height: 28px;
		--header-height: 56px;
		--icon-size: 24px;
	}
	#projects {
		grid-template-columns: repeat(8, 1fr);
	}
}

@media all and ( min-width: 1900px ) {

	#projects {
		grid-template-columns: repeat(9, 1fr);
	}

}

@media all and ( max-width: 1300px ) {
	#projects {
		grid-template-columns: repeat(6, 1fr);
	}
}

@media all and ( max-width: 1100px ) {
	#projects {
		grid-template-columns: repeat(5, 1fr);
	}
}

@media all and ( max-width: 900px ) {
	#projects {
		grid-template-columns: repeat(4, 1fr);
	}
}

@media all and ( max-width: 700px ) {
	#projects {
		grid-template-columns: repeat(3, 1fr);
	}
}


/* mobile */

@media all and ( max-width: 640px ) {

	:root {
		--header-height: 56px;
		--icon-size: 24px;
	}

	#projects {
		grid-template-columns: repeat(2, 1fr);
	}

	#panel #expandButton {
		display: block;
	}
	#panel {
		position: absolute;
		left: 0;
		top: 0;
		width: 100%;
		right: 0;
		z-index: 1000;
		overflow-x: hidden;
		transition: 0s 0s height;
		border: none;
		height: var(--header-height);
		transition: 0s 0.2s height;
	}
	#panel.open {
		height: 100%;
		transition: 0s 0s height;
	}

	#panelScrim {
		pointer-events: none;
		background-color: rgba(0,0,0,0);
		position: absolute;
		left: 0;
		right: 0;
		top: 0;
		bottom: 0;
		z-index: 1000;
		pointer-events: none;
		transition: .2s background-color;
	}
	#panel.open #panelScrim {
		pointer-events: auto;
		background-color: rgba(0,0,0,0.4);
	}

	#contentWrapper {
		position: absolute;
		right: 0;
		top: 0;
		bottom: 0;
		background: white;
		box-shadow: 0 0 8px rgba(0,0,0,.1);
		width: calc(100vw - 60px);
		max-width: 360px;
		z-index: 10000;
		transition: .25s transform;
		overflow-x: hidden;
		margin-right: -380px;
		line-height: 2rem;
	}
	#panel.open #contentWrapper {
		transform: translate3d(-380px, 0 ,0);
	}
	#viewer,
	iframe {
		left: 0;
		top: var(--header-height);
		width: 100%;
		height: calc(100% - var(--header-height));
	}
	#viewer {
		padding-left: 0;
	}
}