@keyframes galaxyFloat {
	0% {
		transform: scale(1.05) translate3d(-1%, -.5%, 0);
	}

	50% {
		transform: scale(1.08) translate3d(1%, .7%, 0);
	}

	100% {
		transform: scale(1.05) translate3d(-.5%, 1%, 0);
	}
}

body {
	position: relative;
}

body::before {
	position: fixed;
	z-index: -1;
	content: "";
	animation: galaxyFloat 18s ease-in-out infinite alternate;
	background: url("../img/bg/conference.png") center / cover no-repeat;
	inset: -5%;
}

.content {
	margin: 2rem;
	border-radius: 4rem;
	background: #BFBFBFDF;
}

.title {
	margin: .5rem;
	padding: .5rem;
	text-align: center;
}

main {
	margin: 0 1rem 0 1rem;
	padding: 1rem;
}

.hero {
	display: flex;
	flex-wrap: wrap;
}

.hero a {
	font-size: 1.5rem;
	font-weight: bold;
	display: flex;
	overflow: hidden;
	align-items: center;
	justify-content: center;
	width: 8rem;
	height: 8rem;
	margin: 1rem;
	padding: 1rem;
	transition: .25s;
	text-decoration: none;
	color: #000000;
	border: .5rem solid #00BFFF;
	border-radius: 50%;
	background: #007FFF;
}

.hero a:hover {
	border: .5rem dashed #007FFF;
	background: #00BFFF;
}

.cover {
	display: block;
	max-width: 100%;
	max-height: 32rem;
	margin: 1rem auto;
}

.list {
	font-size: 2rem;
	text-align: center;
	border-bottom: .25rem dashed #000000;
}

.search {
	text-align: center;
}

.search input {
	font-family: inherit;
	font-size: inherit;
	min-width: 50%;
	margin: 1rem;
	padding: 1rem;
	transition: .25s;
	text-align: center;
	color: #000000;
	border: 1px solid #FFFFFF;
	border-radius: 10rem;
	outline: none;
	background: #FFFFFF;
	box-shadow: 0 0 2rem #FFFFFF7F;
}

.search input:hover {
	border-color: #000000;
}

.search input:focus {
	border-color: #000000;
	background: #7FFFFF;
}

.articles {
	display: grid;
	margin: 1rem 0;
	grid-template-columns: repeat(2, 1fr);
	gap: 1rem;
}

article {
	padding: 2rem;
	text-align: center;
	border-radius: 1rem;
	background: #BFFFFF;
	box-shadow: 0 0 1rem #FFFFFF7F;
}

article pre {
	font-family: inherit;
	margin: 1rem 0;
	white-space: pre-wrap;
	overflow-wrap: break-word;
}

article .writers {
	color: #00007F;
}

article .keywords {
	margin: 1rem 0;
	color: #3F3F3F;
}

summary {
	font-size: 1rem;
	font-weight: bold;
	padding: 1rem 1.25rem;
	cursor: pointer;
	transition: .25s;
	border-radius: 1rem 1rem 0 0;
	background: #7FBFFF;
}

summary:hover {
	background: #7FFFFF;
}

.file {
	font-family: Vazir;
	font-size: 1rem;
	font-weight: bold;
	display: inline-block;
	margin: .25rem;
	padding: .5rem;
	cursor: pointer;
	transition: all .25s;
	text-decoration: none;
	color: #FFFFFF;
	border: none;
	border-radius: 0 0 .5rem .5rem;
	outline: none;
	background-color: #007F00;
}

.file:hover {
	background-color: #009F00;
}

.file:active {
	background-color: #00BF00;
}

@media (max-width: 768px) {
	.articles {
		grid-template-columns: 1fr;
	}
}