/*
	cosmos.css: star and planet formation theme, layered on top of main.css.
	main.css is untouched; delete this file's <link> to get the original look back.

	Palette follows a disk's temperature profile, hot core to cold outer dust:
	  core  #fff1d6   ember #f2a65a   rust #c45a3a   dust #865864   ice #9cc7dc
	  jet   #cfe6ff   void  #070816
*/

:root {
	--void: #070816;
	--core: #fff1d6;
	--ember: #f2a65a;
	--rust: #c45a3a;
	--dust: #865864;
	--ice: #9cc7dc;
	--jet: #cfe6ff;
}

/* Type: Jost, a geometric face in the Futura tradition of space-age signage */

body {
	background: var(--void);
}

body, input, select, textarea {
	font-family: "Jost", "Source Sans Pro", "Century Gothic", "Futura", sans-serif;
	font-weight: 300;
}

h1, h2, h3, h4, h5, h6 {
	font-family: "Jost", "Source Sans Pro", "Century Gothic", sans-serif;
	font-weight: 500;
}

#header h1 {
	font-weight: 400;
	letter-spacing: 0.6rem;
	text-shadow: 0 0 1.5rem rgba(7, 8, 22, 0.9), 0 0 0.25rem rgba(7, 8, 22, 0.8);
}

#header .content p {
	color: var(--core);
	text-shadow: 0 0 1rem rgba(7, 8, 22, 0.95);
}

::selection {
	background: var(--ember);
	color: var(--void);
}

/* Background: the canvases from cosmos.js replace the photo when JS runs */

.cosmos-layer {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 1;
	display: block;
	transition: transform 0.325s ease-in-out, filter 0.325s ease-in-out;
}

.cosmos-on #bg:after {
	display: none;
}

/* Keep the template's fade-from-black intro, but swap the dot screen for a
   gentle vignette so the disk reads clearly */
.cosmos-on #bg:before {
	background-image: radial-gradient(ellipse at center, rgba(7, 8, 22, 0) 45%, rgba(7, 8, 22, 0.6) 100%);
	background-size: cover;
	background-repeat: no-repeat;
}

/* Same depth effect the template applies to its photo when a card opens */
body.is-article-visible .cosmos-layer {
	transform: scale(0.965);
	filter: blur(0.2rem) brightness(0.75);
}

/* Header: the vertical connector lines become the protostellar jet */

#header {
	background-image: radial-gradient(rgba(7, 8, 22, 0.3) 20%, rgba(7, 8, 22, 0) 55%);
}

#header > *:before {
	background: linear-gradient(to bottom, rgba(207, 230, 255, 0.05), var(--jet));
}

#header .content {
	border-color: rgba(255, 241, 214, 0.75);
	background: rgba(7, 8, 22, 0.18);
	backdrop-filter: blur(1.5px);
	-webkit-backdrop-filter: blur(2px);
}

#header nav ul,
#header nav ul li {
	border-color: rgba(255, 241, 214, 0.75);
}

#header nav ul {
	background: rgba(7, 8, 22, 0.35);
}

#header nav.use-middle:after {
	background: rgba(255, 241, 214, 0.75);
}

#header nav ul li a:hover {
	background-color: rgba(242, 166, 90, 0.14);
	color: var(--core);
}

#header nav ul li a:active {
	background-color: rgba(242, 166, 90, 0.26);
}

/* Cards */

#main article {
	background-color: rgba(9, 10, 26, 0.86);
	box-shadow: inset 0 1px 0 rgba(255, 241, 214, 0.08), 0 2rem 5rem -2rem rgba(196, 90, 58, 0.35);
	backdrop-filter: blur(6px);
	-webkit-backdrop-filter: blur(6px);
}

/* Heading rule runs hot to cold, like the disk from star outward */
h2.major {
	border-bottom: 0;
	padding-bottom: 0.6rem;
	background-image: linear-gradient(90deg, var(--core), var(--ember) 30%, var(--rust) 60%, var(--dust) 82%, var(--ice));
	background-size: 100% 1px;
	background-position: left bottom;
	background-repeat: no-repeat;
}

#main article a {
	border-bottom-color: rgba(242, 166, 90, 0.6);
}

#main article a:hover {
	color: var(--ember);
}

#main .image.main img {
	border-radius: 4px;
}

/* Research list */

#arxiv-list {
	padding-left: 1.1rem;
}

#arxiv-list li {
	margin-bottom: 1.5rem;
	padding-left: 0.4rem;
	line-height: 1.6;
}

#arxiv-list li::marker {
	color: var(--ember);
}

#arxiv-list li i {
	color: rgba(255, 241, 214, 0.75);
}

/* Focus that's visible on the dark sky */

a:focus-visible,
button:focus-visible,
#main article .close:focus-visible {
	outline: 2px solid var(--ember);
	outline-offset: 3px;
	border-radius: 2px;
}

#footer .copyright {
	color: rgba(255, 241, 214, 0.55);
}