/* Small additions on top of the Strata template (main.css is left unchanged). */

/* Publication lists */
ul.pubs li {
	padding: 1em 0;
	line-height: 1.6;
}

ul.pubs li:first-child {
	padding-top: 0;
}

/* Titles use the template's heading grey; my own name uses its bold style. */
.pub-title,
.pub-title a {
	color: #787878;
	font-weight: 700;
	border-bottom: 0;
}

.pub-title a:hover {
	color: #49bf9d !important;
}

.pub-meta {
	font-size: 0.9em;
}

.pub-stats {
	font-size: 0.9em;
	font-style: italic;
}

/* Floated research images: stop a left and a right image squeezing the
   text between them into a narrow column. */
#main span.image.left,
#main span.image.right {
	clear: both;
}

/* Contact links */
ul.contact-links {
	list-style: none;
	padding-left: 0;
}

ul.contact-links li {
	padding: 0.25em 0;
}

/* Sticky section bar across the top of the content column.
   Negative margins pull it out to the edges of #main's padding, which
   Strata changes at each breakpoint (see main.css "#main"). */
#nav {
	position: -webkit-sticky;
	position: sticky;
	top: 0;
	z-index: 100;
	margin: -8em -4em 4em -4em;
	padding: 0 4em;
	background: #fff;
	border-bottom: solid 2px #efefef;
	/* #main has a max-width, so on wide screens carry the bar's background
	   and bottom line on to the right edge of the window. Shadows and
	   border-image outsets are painted only, so they never add scrolling. */
	box-shadow: 0 0 0 100vmax #fff;
	clip-path: inset(0 -100vmax 0 0);
	border-image: linear-gradient(#efefef, #efefef) 0 0 1 0 / 0 0 2px 0 / 0 100vmax 0 0;
}

/* Short labels (nav "short:" in _config.yml) for very narrow screens. */
#nav .nav-short {
	display: none;
}

#nav ul {
	display: flex;
	flex-wrap: nowrap;
	gap: 0 2.5em;
	list-style: none;
	margin: 0;
	padding: 0;
	overflow-x: auto;
	scrollbar-width: none;
}

#nav ul::-webkit-scrollbar {
	display: none;
}

#nav li {
	flex: none;
	padding: 0;
}

#nav a {
	display: block;
	padding: 1.6em 0 1.35em 0;
	margin-bottom: -2px;
	border-bottom: solid 2px transparent;
	color: #787878;
	font-size: 0.8em;
	font-weight: 700;
	letter-spacing: 0.15em;
	text-transform: uppercase;
	white-space: nowrap;
}

#nav a.active {
	color: #49bf9d;
	border-bottom-color: #49bf9d;
}

#nav a.active:hover {
	border-bottom-color: #49bf9d;
}

/* The bar replaces the divider line above the first section. */
#main > #nav + section {
	border-top: 0;
	margin-top: 0;
	padding-top: 0;
}

/* Keep section tops clear of the bar when jumping to them. */
#main > section {
	scroll-margin-top: 3.5em;
}

@media screen and (max-width: 1280px) {
	#nav {
		margin: -6em -3em 3em -3em;
		padding: 0 3em;
	}
}

@media screen and (max-width: 980px) {
	#nav {
		margin: -6em -4em 3em -4em;
		padding: 0 4em;
	}
}

@media screen and (max-width: 736px) {
	#nav {
		margin: -2.25em -1.5em 2.25em -1.5em;
		padding: 0 1.5em;
	}

	#nav ul {
		gap: 0 1.5em;
	}

	#nav a {
		padding: 1.25em 0 1.1em 0;
		letter-spacing: 0.08em;
	}
}

@media screen and (max-width: 480px) {
	#nav ul {
		gap: 0 1.25em;
	}

	#nav a {
		font-size: 0.75em;
	}

	#nav .nav-long.has-short {
		display: none;
	}

	#nav .nav-short {
		display: inline;
	}
}

/* Interactive 3D model: still image with a launch button, replaced by the
   viewer in an iframe on click (see site.js). */
.model-viewer {
	position: relative;
	aspect-ratio: 2688 / 1566;
	margin-bottom: 1em;
	border: solid 2px #efefef;
	border-radius: 0.35em;
	overflow: hidden;
	background: #fff;
}

.model-viewer img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: opacity 0.3s ease-in-out;
}

.model-viewer .model-launch {
	position: absolute;
	left: 50%;
	top: 50%;
	transform: translate(-50%, -50%);
	box-shadow: 0 0.25em 1em rgba(0, 0, 0, 0.2);
}

.model-viewer .model-status {
	position: absolute;
	left: 50%;
	top: 50%;
	transform: translate(-50%, -50%);
	margin: 0;
	padding: 0.5em 1em;
	border-radius: 0.35em;
	background: rgba(255, 255, 255, 0.9);
	color: #787878;
	white-space: nowrap;
}

.model-viewer .model-status:empty {
	display: none;
}

.model-viewer iframe {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	border: 0;
	opacity: 0;
	transition: opacity 0.3s ease-in-out;
}

.model-viewer.is-ready iframe {
	opacity: 1;
}

.model-viewer.is-loading img {
	opacity: 0.4;
}

.model-note {
	font-size: 0.9em;
}

/* Larger profile photo in the sidebar (template default is 6.25em). */
#header .image.avatar {
	width: 15em;
	max-width: 100%;
	margin-bottom: 1.5em;
}

@media screen and (max-width: 736px) {
	#header .image.avatar {
		width: 12em;
		margin-bottom: 1em;
	}
}

/* Single-page navigation: scroll smoothly to each section. */
html {
	scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
	html {
		scroll-behavior: auto;
	}
}

/* Contact links at the end of "About Me" */
#about ul.contact-links {
	margin-top: 1.5em;
}