@import url('bootstrap.min.css');

/* Basic color scheme */
body {
	background-color: #003366;
}

header .sr-only-focusable {
	color: #99CAFF;
}

.foreground {
	background-color: #f7f7f7;
	min-height: 720px;
	width: 90%;
	margin: 0 5%;
	padding-top: 5em;
	padding-bottom: 5em;
}

@media screen and (max-width: 768px) {
    .foreground {
    	width:100%;
    	margin: 0 auto;
    }
}

article#content {
    max-width: 50em;
    margin: 0 auto;
    padding: 0 2em 1.5em;
}

a {
	color: #0065d1;			   /* tones down luminosity against light bg */
}

.navbar-dark .navbar-nav .nav-link {
	color: rgba(255, 255, 255, 0.7);		/* up from alpha 0.5 in Bootstrap */
}

.navbar-dark .navbar-nav .nav-link:hover {
	text-decoration: underline;
}

/* Bottom menu for next / previous lesson navigation */
ul#lesson-nav {
    width: 100%;
    list-style-type: none;
    display: flex;
    justify-content: space-between;
}

ul#lesson-nav a {
    color: aliceblue;
}

/* Front page styling */
body.front div#background {
    background-image: url("../img/course-title.jpg");
}

nav#front-nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    width: 100%;
    padding: 0 1em 1em;
}

nav#front-nav .nav-item:not(.btn) {
    grid-column: 1/-1;
    text-align: center;
}

body.front details {
    margin: 0 2em;
}

body.front details summary {
    background-color: initial;
    border: initial;
}

body.front #content {
    display: grid;
}

@media (min-width: 820px) {
	.who-when-where {
		display: grid;
		grid-template-columns: 2fr 5fr;
		grid-template-rows: 1fr 1fr;
		grid-auto-flow: row;
	}

    body.front .content-wrapper {
        max-width: 80em;
        margin: 1em auto;
    }

    body.front section#content {
        grid-template-columns: 2fr 5fr;
    }

    #description {
        grid-column: 2 / 3;
        grid-row-start: 1;
    }

    #responsibilities {
        grid-column: 2 / 3;
        grid-row-start: 2;
        align-content: start;
    }

    #front-nav {
        grid-column: 1 / 2;
        grid-row: 1 / 5;
        align-content: start;
    }

}

.featured-image {
	max-width: 20em;
}

#description {
	max-width: 40em;
	margin: 1.5em;
}

.center-pills {
    display: flex;
    justify-content: center;
	flex-wrap: wrap;
}

.center-pills .nav-item {
		height: fit-content;
		margin: 5px;
}

header h1, header h2, header h3, header h4 {
	font-family: asap, calibri, sans-serif;
}

header h3 {
    font-size: 1.3em;
    font-weight: initial;
    color: #777;
}

header, .page-header {
	background-color: #f7f7f7;
}

.page-header {
	max-width: 70%;
}

footer {
    color: #d0d0d0;
    bottom: 0;
    margin: 0.5em 10%;
		font-size: 0.8em;
}

footer a {
    color: #8baee9;
}

footer a:hover, footer a:focus, footer a:visited {
    color: #6a9af4;
}

dfn {
    font-style: initial;
}

/* Header spacing */

body.thin_header {
	padding-top: 69px;
}

body.bottom_header {
	padding-bottom: 69px;
}

body.front header {
	flex-wrap: wrap;
}

div#navbar-collapse-1 {
	margin-top: 9px;
}

body.full_header {
	padding-top: 105px;
}

div#navbar-collapse-2 {   /* only used in full_header.html*/
	margin-top: -15px;
}

button#menu-button {
	margin-top: -3.5em;
}

img.banner {
  width: 200%;
  display: block;
  margin-left: -50%;
  margin-right: auto;
}

#navbarNav ul.navbar-nav {
    align-items: flex-end;
    margin-right: 0.5em;
}

h2, h3 {
    margin-top: 1.1em;
}

/* Don't let the anchor-jumps get chomped by the header */
h1::before, h2::before, h3::before, h4::before, #content::before, .slides img::before {
  display: block;
  content: " ";
  margin-top: -85px;
  height: 85px;
  visibility: hidden;
  pointer-events: none;
}

/* Footnotes */
.ftnref, .ftn {
    font-size: .83em;
    /* line-height: 0.5em; */
    vertical-align: baseline;
    position: relative;
    top: -0.4em;
}

.footnote-block {
	margin: 2.5em 0;
	font-size: 0.8em;
}

.footnote {
  text-indent: -1.4em;
  margin-left: 1em;
}

/* Images. Add padding, don't overflow column, don't overflow screen, maintain aspect ratio. */
article figure img {
    max-width: 100%;
    max-height: 90vh;
    height: auto;
    margin: 0 auto;
}

article figure {
    margin: 2em auto;
}

article figure figcaption {
    margin: 1em;
    font-style: italic;
}

/* Indent dictionary definitions, better demarcate dictionary terms */
dt {
    font-style:italic;
    font-weight: bold;
}

dd {
    margin: 0 0 1em 2em;
}

/* Make new alert class with a transparent middle but a colored border; useful for sidebar topics within main content */
.alert-white {
    border: 1px solid deepskyblue;
}

/* Shortcut menu on schedule page should be italicized, but it's not really content, so let's do it here */
#shortcuts {
    font-style: italic;
}

/* Some lists should be more widely spaced */
ul.spaced > li, ol.spaced > li {
	  margin-bottom: 1em;
}

ol.lalpha {
	list-style-type: lower-alpha;
}

ol.ualpha {
	list-style-type: upper-alpha;
}

/* and pretty much all nested lists */
li li:last-of-type {
    margin-bottom: 1em;
}

li li:first-of-type {
    margin-top: 0.25em;
}

li:has(ul) + li {
    margin-top: 0.5em;
    margin-bottom: 0.5em;
}

/* while we're talking nested lists, let's make level-2 bullets more prominent than level-3 */
ul ul {
    list-style-type: square;
}

ul ul ul {
    list-style-type: circle;
}

ol ul:first-of-type {
    list-style-type: disc;
}

/* Create side-by-side columns */
.flex-container {
	display: flex;
	flex-direction: row;
	/* flex-wrap: nowrap; */
	justify-content: space-between;
	align-items: flex-start;
}

/* Make <detail> accordion-style elements prettier */
details summary {
    width: 100%;
    background-color: #a7d6ff;
    border: 1px solid #75bfff;
    margin: 5px 0;
    padding: 0.5em;
}

details details summary {
    background-color: #dee5eb;
    border: 1px solid #7a92ad;
    padding-left: 2em;
}

details[open], aside {
    margin-bottom: 2em;
  	padding-bottom: 1em;
  	-webkit-box-shadow: 0 8px 6px -4px hsl(0, 0%, 66%);
	     -moz-box-shadow: 0 8px 6px -4px hsl(0, 0%, 66%);
	          box-shadow: 0 8px 6px -4px hsl(0, 0%, 66%);
}

details:not([open]) + p {
    margin-top: 1.2em;
}

/* Keep headings simple before they're expanded */
details:not([open]) summary:has(h3) {
    background-color: initial;
}

details:not([open]) h3 {
    font-size:1.2rem;
    margin-top: -5.75em;
}

details summary h3 {
    margin-top: -4em;
    margin-left: 1em;
    margin-bottom: 0;
}

/* But inherit colors inside a colored alert */
.alert summary {
    background-color: inherit;
}

aside {
    padding: 1em;
    background-color: #F7FAFC;
}

/* And have a more post-it like appearance for the opening lists of texts to have read and writing to turn in */

.prereqs {
    background-color: rgba(234, 230, 114, .33);
    margin-bottom: 2em;
}

.prereqs details summary {
    background-color: initial;
    border: initial;
}

.prereqs details {
    padding: 0.1em;
}



/* Add more visual separation between consecutive
   dictionary list items (e.g. on resources page) */
dt:nth-child(1) {
    border-top: 3px solid #008000a8;
    padding-top: 0.5em;
}

dd + dt {
    border-top: 3px solid #008000a8;
    margin-top: 3em;
    padding-top: 0.5em;
}


dd + dt:nth-of-type(even) {
    border-top: 3px solid #05015ea8;
}

/* Get rid of that default pink code styling */
pre, code {
    border-radius: 2px;
    -moz-border-radius: 2px;
    -webkit-border-radius: 2px;
    border: 1px solid hsla(210, 3%, 83%, 1);
    padding: 3px;
    line-height: inherit;
    font-family: "Lucida Console", "Monaco", monospace;
    font-size: 0.9rem;
    color: #462d32;
    background-color: #efefef;
    vertical-align: baseline;
}

pre {
    padding: 0.2em 1em 1.2em;
}

pre code {
    border: none;
    padding: initial;
}

/* Dummy span to stop Atom from italicizing after real underscores and asterisks */

.hidden {
	display: none;
}

/* TO DO: Add powerpoint-like "appear" animation where desired, using @keyframes and :active


*/


/* CSS-only Carousel, via https://css-tricks.com/css-only-carousel/ */

.slider {
    max-width: 600px;
    text-align: center;
    margin: 2em auto;
    overflow: hidden;
}

.slides {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;

    /*
    scroll-snap-points-x: repeat(60vw);
    scroll-snap-type: mandatory;
    */
}

.slides::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}
.slides::-webkit-scrollbar-thumb {
    background: black;
    border-radius: 10px;
}
.slides::-webkit-scrollbar-track {
    background: transparent;
}

.slides > figure {
    scroll-snap-align: start;
    flex-shrink: 0;
    width: 100%;
    margin-right: 50px;
    border-radius: 10px;
    background: #eee;
    transform-origin: center center;
    transform: scale(1);
    transition: transform 0.5s;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    scroll-margin-top: 10px;
}

.slides img {
    object-fit: cover;
    width: 100%;
}

.slider > a {
    display: inline-flex;
    width: 1.5rem;
    height: 1.5rem;
    background: white;
    text-decoration: none;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin: 0.5rem 0 0.5rem 0;
    position: relative;
}
.slider > a:active {
    top: 1px;
}
.slider > a:focus {
    background: #333;
    color: #48a0ff;
}


.slides figcaption {
    font-size: 0.75em;
}

.slides code {
    font-size:0.9em;
    border: none;
}

.smaller {
    font-size: smaller;
}


/* Blockquote styling from https://css-tricks.com/snippets/css/simple-and-nice-blockquote-styling/ */
blockquote {
  background: #f9f9f9;
  border-left: 10px solid #ccc;
  margin: 1.5em 10px;
  padding: 0.5em 10px;
  quotes: "\201C""\201D""\2018""\2019";
}
blockquote:before {
  color: #ccc;
  content: open-quote;
  font-size: 4em;
  line-height: 0.1em;
  margin-right: 0.25em;
  vertical-align: -0.4em;
}

blockquote p {
	display: inline-block;
}

blockquote p.bq_cite {
	max-width: 50%;
	margin-right: 0;
	margin-left: auto;
	font-style: italic;
}


/* Don't need button navigation
@supports (scroll-snap-type) {
    .slider > a {
      display: none;
    }
} */

/* Don't use animations for people who prefer reduced motion */
@media screen and (prefers-reduced-motion: reduce) {
    .animate { animation: none !important; }
  }