body {
	font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
	margin: 0;
	letter-spacing: 0.025em;
	background-color: #f5f7fa;
}

.layout {
	width: 90vw;
}

.header {
	display: flex;
	align-items: center;
	width: 80%;
	padding: 30px;
}

img {
	width: 150px;
	height: 150px;
	border-radius: 100%;
	display: inline-block;
}

h1 {
	text-align: left;
	padding: 20px;
	font-size: 2.5em;
	font-weight: 400;
	display: block;
	margin-bottom: 0.2em;
}

h2 {
	text-align: left;
	font-size: 1.2em;
	font-weight: normal;
	color: #666;
	margin-top: 0;
	display: block;
	padding: 0 20px;
}

.introduction {
	padding: 0vw 5vw;
	margin-bottom: 20px;
}

.intro-text {
	font-size: 1.1rem;
	line-height: 1.6;
	color: #333;
	text-align: left;
	margin: 0;
	padding: 0 20px;
}

.intro-text strong {
	font-weight: 600;
}

div.datasets-wrapper {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	padding: 0vw 5vw;
	gap: 20px;
}

div.dataset-div {
	text-align: center;
	border-radius: 10px;
	padding: 20px;
	margin: 20px;
	box-shadow: 0px 2px 4px 1px #999;
	background-color: white;
}

.top {
	display: flex;
	align-items: center;
	justify-content: center;
}

.dataset-title {
	margin: 0px 20px;
	font-weight: 400;
}

div.button-wrapper {
	display: inline-flex;
	text-align: center;
}

.button-wrapper button {
	padding: 10px 20px;
	margin: 0px 10px 0px 5px;
	background-color: #8b0000; /* dark red */
	color: white;
	border: none;
	border-radius: 20px;
	cursor: pointer;
	font-size: 1.05em;
	box-shadow: 0 4px 15px rgba(149, 165, 166, 0.3);
	display: inline-flex;
	justify-content: center;
	align-items: center;
	white-space: nowrap;
	min-height: 40px;
	min-width: 160px;
	width: auto;
}

.button-wrapper button:hover {
	background-color: #a52a2a; /* slightly lighter red */
	transition: background-color 0.3s ease;
	box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

p.dataset-description {
	display: block;
	margin-top: 25px;
	text-align: left;
	line-height: 1.5;
}

/* ========================================
   MOBILE RESPONSIVE STYLES
   ======================================== */
@media screen and (max-width: 850px) {
	div.datasets-wrapper {
		grid-template-columns: 1fr;
		padding: 0vw 3vw;
	}

	div.dataset-div {
		margin: 10px 0;
	}

	.button-wrapper button:hover,
	.button-wrapper button:active,
	.button-wrapper button:focus {
		background-color: #a52a2a;
		transition: all 0.3s ease;
		box-shadow: 0 8px 25px rgba(139, 0, 0, 0.4), 0 0 20px rgba(255, 182, 193, 0.6), 0 0 40px rgba(255, 182, 193, 0.3);
		transform: translateY(-2px);
	}

	.button-wrapper button:active {
		transform: translateY(0px);
		box-shadow: 0 4px 15px rgba(139, 0, 0, 0.5), 0 0 15px rgba(255, 182, 193, 0.8), 0 0 30px rgba(255, 182, 193, 0.4);
	}

	.header {
		flex-direction: column;
		text-align: center;
		width: 100%;
		padding: 20px;
	}

	.header-text {
		display: flex;
		flex-direction: column;
	}

	img {
		width: 120px;
		height: 120px;
		margin-bottom: 2px;
	}

	h1 {
		font-size: 1.8em;
		text-align: center;
		padding: 10px;
	}

	.introduction {
		padding: 0vw 3vw;
	}

	.intro-text {
		padding: 0 10px;
		font-size: 1rem;
		line-height: 1.4;
		text-align: justify;
	}

	@media screen and (max-width: 480px) {
		.top {
			flex-direction: column;
			gap: 15px;
		}

		.dataset-title {
			margin: 0;
			font-size: 1.2em;
		}

		div.button-wrapper {
			flex-direction: column;
			width: 100%;
		}

		.button-wrapper button {
			margin: 5px 0;
			width: 100%;
			justify-content: center;
		}
	}
}

/* ================================
   Disclaimer Component
   ================================ */
.disclaimer-box {
	border: 1px solid #e0e0e0;
	border-radius: 8px;
	padding: 14px 16px;
	background: #ffffff;
	box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
	margin: 20px;
}

/* Smooth collapsible effect */
.disclaimer-collapsible {
	overflow: hidden;
	max-height: 0;
	opacity: 0;
	transition: max-height 300ms ease, opacity 300ms ease;
}

.disclaimer-collapsible.open {
	opacity: 1;
}