/* ------------------------------------------------------------------
   Custom additions for newtonnguyen.com
   Layered on top of the HTML5 UP "Story" template.
   ------------------------------------------------------------------ */

:root {
	--ink:        #30363d;
	--ink-soft:   #5b6a6f;
	--ink-faint:  #8e9a9e;
	--rule:       #e2e8ea;
	--teal:       #4f9aa5;
	--teal-dark:  #1d6670;
	--teal-wash:  #f3f9fa;
	--accent:     #47D3E5;
}

/* Keyboard users need to see where they are. */
a:focus-visible,
button:focus-visible,
.topnav a:focus-visible {
	outline: 3px solid var(--accent);
	outline-offset: 3px;
}

/* Skip link: first stop for screen-reader and keyboard users. */
.skip-link {
	position: absolute;
	left: -9999px;
	top: 0;
	z-index: 10000;
	padding: 0.5rem 0.9rem;
	background: #ffffff;
	color: #000000;
	font-weight: 600;
	text-decoration: none;
	border: 2px solid var(--accent);
}

.skip-link:focus {
	left: 0.5rem;
	top: 0.5rem;
}

/* ---------- Nav ----------
   The template floats nav links right, which wraps badly on narrow
   screens. Flex with row-reverse keeps the same right-aligned order on
   desktop, and wrap-reverse keeps the reading order correct when it wraps. */

.topnav {
	display: flex;
	flex-direction: row-reverse;
	flex-wrap: wrap-reverse;
	justify-content: flex-start;
	align-items: center;
}

.topnav a {
	float: none;
}

.topnav a[aria-current="page"] {
	box-shadow: inset 0 -3px 0 var(--accent);
}

@media screen and (max-width: 736px) {
	.topnav {
		justify-content: center;
	}

	.topnav a {
		padding: 6px 12px;
		font-size: 16px;
	}
}

/* ---------- Section scaffolding ---------- */

.section-intro {
	max-width: 34rem;
	margin: 0 auto 2.5rem auto;
	color: var(--ink-soft);
}

.section-label {
	display: block;
	margin-bottom: 0.5rem;
	font-size: 0.7em;
	font-weight: 700;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--teal-dark);
}

.rule {
	height: 1px;
	margin: 3rem 0;
	background: var(--rule);
	border: 0;
}

/* ---------- Research themes ---------- */

.themes {
	display: grid;
	gap: 2.5rem;
	margin: 0;
	padding: 0;
	list-style: none;
}

.theme {
	display: grid;
	grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
	gap: 2rem;
	align-items: center;
	padding: 1.6rem;
	border: 1px solid var(--rule);
	border-radius: 10px;
	background: #ffffff;
}

.theme:nth-child(even) .theme-figure {
	order: 2;
}

.theme-figure {
	margin: 0;
	min-width: 0;
}

.theme-figure img {
	display: block;
	width: 100%;
	height: auto;
	border-radius: 6px;
	background: #ffffff;
}

.theme-body h3 {
	margin-bottom: 0.6rem;
	letter-spacing: -0.025em;
}

.theme-body p {
	color: var(--ink-soft);
	margin-bottom: 0.9rem;
}

.theme-body p:last-child {
	margin-bottom: 0;
}

.tags {
	display: flex;
	flex-wrap: wrap;
	gap: 0.4rem;
	margin: 0 0 0.9rem 0;
	padding: 0;
	list-style: none;
}

.tags li {
	padding: 0.18em 0.6em;
	border: 1px solid var(--rule);
	border-radius: 999px;
	background: var(--teal-wash);
	color: var(--teal-dark);
	font-size: 0.72em;
	font-weight: 600;
	letter-spacing: 0.02em;
	white-space: nowrap;
}

/* ---------- Result figures from published papers ---------- */

.figures {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
	gap: 2rem;
	margin: 0;
	padding: 0;
	list-style: none;
}

.figure-card {
	margin: 0;
	padding: 1.2rem;
	border: 1px solid var(--rule);
	border-radius: 10px;
	background: #ffffff;
}

.figure-card img {
	display: block;
	width: 100%;
	height: auto;
	border-radius: 4px;
}

.figure-card figcaption {
	margin-top: 0.9rem;
	color: var(--ink-soft);
	font-size: 0.82em;
	line-height: 1.6;
}

.figure-card figcaption strong {
	color: var(--ink);
}

.figure-source {
	display: block;
	margin-top: 0.5rem;
	color: var(--ink-faint);
	font-size: 0.95em;
}

/* ---------- Publications ---------- */

.pub-year {
	display: flex;
	align-items: center;
	gap: 0.9rem;
	margin: 2.2rem 0 1.1rem 0;
	color: var(--ink-faint);
	font-size: 0.78em;
	font-weight: 700;
	letter-spacing: 0.16em;
}

.pub-year::after {
	content: "";
	flex: 1;
	height: 1px;
	background: var(--rule);
}

.pubs {
	margin: 0;
	padding: 0;
	list-style: none;
}

.pubs li {
	padding: 0 0 1.3rem 0;
	margin: 0;
}

.pubs li:last-child {
	padding-bottom: 0;
}

.pub-title {
	display: block;
	margin-bottom: 0.3rem;
	color: var(--ink);
	font-weight: 600;
	line-height: 1.45;
}

.pub-authors {
	display: block;
	margin-bottom: 0.35rem;
	color: var(--ink-soft);
	font-size: 0.84em;
	line-height: 1.6;
}

.pub-authors .me {
	color: var(--ink);
	font-weight: 700;
}

.pub-meta {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.5rem;
	font-size: 0.8em;
}

.venue {
	padding: 0.18em 0.6em;
	border-radius: 4px;
	background: #eef3f4;
	color: var(--ink);
	font-weight: 600;
	font-style: normal;
}

.venue.is-flagship {
	background: var(--teal);
	color: #ffffff;
}

.venue.is-preprint {
	background: #f4f0e6;
	color: #6f6346;
}

.pub-meta a {
	color: var(--teal-dark);
	border-bottom: 1px dotted currentColor;
	text-decoration: none;
}

.pub-meta a:hover {
	border-bottom-style: solid;
}

.pub-status {
	color: var(--ink-faint);
	font-style: italic;
}

/* ---------- Software ---------- */

.software {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
	gap: 1.5rem;
	margin: 0;
	padding: 0;
	list-style: none;
}

.software li {
	padding: 1.3rem;
	border: 1px solid var(--rule);
	border-radius: 10px;
	background: #ffffff;
}

.software h3 {
	margin-bottom: 0.2rem;
	font-size: 1.05em;
	font-weight: 600;
	letter-spacing: -0.02em;
}

.software .lang {
	display: block;
	margin-bottom: 0.7rem;
	color: var(--ink-faint);
	font-size: 0.75em;
	font-weight: 600;
	letter-spacing: 0.1em;
	text-transform: uppercase;
}

.software p {
	margin-bottom: 0.8rem;
	color: var(--ink-soft);
	font-size: 0.88em;
}

.software a.repo {
	color: var(--teal-dark);
	font-size: 0.85em;
	font-weight: 600;
	border-bottom: 1px dotted currentColor;
	text-decoration: none;
}

.software a.repo:hover {
	border-bottom-style: solid;
}

/* ---------- Narrow screens ---------- */

@media screen and (max-width: 980px) {
	.theme {
		grid-template-columns: 1fr;
		gap: 1.4rem;
	}

	.theme:nth-child(even) .theme-figure {
		order: 0;
	}
}

@media screen and (max-width: 736px) {
	.theme {
		padding: 1.1rem;
	}

	.figures {
		grid-template-columns: 1fr;
	}
}

/* ---------- Print ---------- */

@media print {
	.topnav,
	footer {
		display: none;
	}
}