/* Colors */
:root {
	--background-color: white;
	--header-background-color: #202020;
	--text-color: black;
	--background-text-color: white;
	--button-text-color: white;
	--link-color: #3983C4;
	--pre-color: #F7F7F7;
	--table-color: #F7F7F7;
	--table-border-color: lightgray;
	--quote-color: #777777;
	--ruler-start: #ccc;
	--ruler-middle: #333;

	img.logo {
		filter: brightness(0%); /* black as --text-color */
	}
}

@media (prefers-color-scheme: dark) {
	:root {
		--background-color: #2d2d2d;
		--text-color: #d2d2d2;
		--background-text-color: #d2d2d2;
		--button-text-color: #d2d2d2;
		--pre-color: #555555;
		--table-color: #555555;
		--quote-color: #a2a2a2;
		--ruler-start: #333;
		--ruler-middle: #ccc;

		img.logo {
			/* --text-color converted using https://codepen.io/sosuke/pen/Pjoqqp */
			filter: invert(100%) sepia(0%) saturate(7228%) hue-rotate(67deg) brightness(81%) contrast(105%); /* #d2d2d2 */
		}
	}
}

img.logo {
	height: 100%;
}
.logolinks a + a {
	margin-left: 0.5em;
}

.header {
	background:var(--header-background-color);
}
.header-grid {
    display:grid;
	grid-template-columns: 1fr fit-content(200px);
    grid-template-areas:
		'main-nav logolinks'
		'header header';
	width: 100%;
	max-width: 1024px;
    margin: 0 auto; /* center horizontally */
}

/* grid container */
.main-grid {
    display:grid;
    grid-template-areas:
        'page-content'
        'sidebar'
        'footer';
	width: 100%;
	max-width: 1024px;
    margin: 0 auto; /* center horizontally */
}

/* general column padding */
.main-grid > * {
    padding:1rem;
}

/* assign columns to grid areas */
.header-grid > .header {
    grid-area:header;
	font-size: 1.5em; /* h2 size */
    padding: 0 1rem 1rem 1rem; /* trbl */

}
.header-grid > .main-nav {
    padding: 0.5em 1rem;
    grid-area:main-nav;
	font-size: 0.9em;
	display: flex;
	align-items: center;
}
.header-grid > .logolinks {
    grid-area:logolinks;
	height: 1em;
    padding: 0rem 1rem;
	margin: auto 0; /* center vertically */
}
.main-grid > .page-content {
    grid-area:page-content;
}
.main-grid > .sidebar {
    grid-area:sidebar;
	padding-top: 0em;
}
.main-grid > .sidebar hr {
	margin-top: 0em;
}
.main-grid > .footer {
    grid-area:footer;
}

.main-grid > .header, .main-grid > .main-nav {
    padding:0.5em;
}

@media (min-width:768px) {
	/* Consider switching sidebar/main-nav to the left */
    .header-grid {
        grid-template-columns: 1fr fit-content(200px) 280px;
        grid-template-areas:
			'header logolinks main-nav';
	}
	.header-grid > .header {
		padding:1rem;
	}
	.header-grid > .logolinks {
	    padding:1rem 0;
	}
	.header-grid > .main-nav {
/*		justify-content: center;*/
	}
    .main-grid {
        grid-template-columns: 1fr 280px;
        grid-template-areas:
            'page-content sidebar'
            'footer footer';
    }
}

.header-grid > .header {
	color: var(--background-text-color);
}

/* General margins/reset */	
body, h1, h2, h3, h4, h5, h6, p, blockquote, pre, hr, dl, dd, ol, ul, figure {
	margin: 0;
	padding: 0;
}

h1 {
	margin-bottom: 0.5em;
}

h2 {
	margin-top: 0.8em;
	margin-bottom: 0.8em;
}

h3 {
	margin-top: 0.7em;
	margin-bottom: 0.7em;
}

p + p {
	margin: 1em 0;
}

p,ul,ol {
	line-height: 1.4;
}

ul,ol {
	margin-top: 1em;
	margin-bottom: 1em;
	padding-left: 20px;
}

/* Paragraph at top should not have a top margin */
main.page-content > p:first-child {
	margin-top: 0;
}

/* General styling */
body {
	background-color: var(--background-color);
	color: var(--text-color);
	font-family: -apple-system, "Helvetica Neue", "Lucida Grande", sans-serif;
	font-size: initial;
}

a {
	color: var(--link-color);
}
.post-header a {
	color: var(--text-color);
}

a:link {
	background: inherit;
	text-decoration: none;
}

a:visited {
	filter: brightness(150%);
	background: inherit;
}

a:hover {
	text-decoration:underline;
}

a.navigation+a.navigation {
	padding-left: 1.2em;
}

/* Specific styling */
.main-grid > .footer {
	padding: 10px;
	font-size: 0.7em;
	text-align: center;
}

.header-grid > .main-nav {
}
.header-grid > .main-nav a + a {
	padding-left: 0.3em;
}

.main-grid > .sidebar {
	font-size: 0.8em;
}

/* Don't wrap long blog post titles */
.main-grid > .sidebar .links li {
	text-wrap: nowrap;
	color: var(--link-color);
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Block code segments */
pre {
	margin: 10px 0px;
	padding: 8px;
	border-radius: 5px;

	background-color: var(--pre-color);
	/* Tricky to avoid this */
	white-space: pre-wrap;
}

code {
	padding: 0 0.25em;
	background-color: var(--pre-color);
	border-radius: 3px;
}

pre > code {
	margin: 0;
	padding: 0;
}

/* Tables */
table {
	border-radius: 5px 5px 5px 5px;
	background-color: var(--table-color);
	border-collapse: collapse;
	margin: 1em auto;
	font-size: 0.9em;

}
th {
	padding: 0.5em;
}
td {
	border-top: 1px solid lightgray;
	padding: 0.5em;
}
td+td,th+th {
	border-left: 1px solid lightgray;
}

/* Layout debug coloring */
/*	.header-grid > .header { background:#f97171; }
.header-grid > .main-nav { background:gray; }
.main-grid > .page-content { background:#fff; }
.main-grid > .sidebar { background:#f5d55f; }
.main-grid > .footer { background:#72c2f1; }
*/

/* Image centering */
img.centerframe, img.center {
	display: block;
	margin-left: auto;
	margin-right: auto;
}

/* Horizontal ruler */
hr {
	margin-top: 1em;
	margin-bottom: 1em;

	border: 0;
	height: 1px;
	background: var(--ruler-middle);
	background-image: linear-gradient(to right, var(--ruler-start), var(--ruler-middle), var(--ruler-start));
}

/* Positioning date below blog posts */
p.post-meta {
	margin: 0;
	font-size: 0.8em;
}
.post-header h1 {
	margin-bottom: 0em;
}
.post-header {
	margin-bottom: 1em;
}

div.center {
	text-align: center;
}

/* Download / Purchase buttons */
.btn-dl {background-image: linear-gradient(to bottom, #3983C4 0%, #042D6A  100%)}
.btn-dl {
	border: none;
	padding: 0.5em 1.5em;
	text-align: center;
	transition: 0.5s;
	background-size: auto 200%;
	color: var(--button-text-color);
	border-radius: 10px;
}

.btn-dl:hover {
	background-position: bottom center;
	text-decoration: none;
}

/*
	The following is from Standard.mmTheme
*/

/* Footnotes */
div.footnotes {
	font-size: 0.8em;
}
div.footnotes li p {
	margin: 0.2em 0;
}

.sidebar ul {
	list-style-type: none;
	margin-top: 0.5em;
	margin-bottom: 0.5em;
}

.sidebar > ul {
	padding: 0;
	list-style-type: none;
}

.quotes ul {
	margin: 0.5em 0 0 0;
	padding: 0;
	list-style-type: none;
}

.quotes ul li {
	margin: 0 0 5px;
	padding-left: 5px;
	border-left: 2px solid var(--quote-color);
	color: var(--quote-color);
}

.quotes ul {
	margin: 0.5em 0 0 0;
	padding: 0;
	list-style-type: none;
}

blockquote {
	margin: 1em 0;
	padding-left: 5px;
	border-left: 2px solid var(--quote-color);
	color: var(--quote-color);
}