* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
	line-height: 1.6;
	color: #333;
	background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
	min-height: 100vh;
	padding: 2rem;
}

.container {
	max-width: 900px;
	margin: 0 auto;
	background: white;
	border-radius: 12px;
	box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
	overflow: hidden;
}

header {
	background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
	color: white;
	padding: 3rem 2rem;
	text-align: center;
}

header h1 {
	font-size: 2rem;
	margin-bottom: 0.5rem;
}

header p {
	opacity: 0.9;
	font-size: 1.1rem;
}

section {
	padding: 2rem;
}

h2 {
	color: #667eea;
	margin-bottom: 1rem;
	font-size: 1.5rem;
}

h3 {
	color: #555;
	margin-bottom: 0.5rem;
	font-size: 1.2rem;
}

.test-section {
	border-bottom: 1px solid #e0e0e0;
}

.test-group {
	display: flex;
	flex-wrap: wrap;
	gap: 1rem;
	margin-bottom: 1.5rem;
}

button {
	background: #667eea;
	color: white;
	border: none;
	padding: 0.75rem 1.5rem;
	border-radius: 6px;
	font-size: 1rem;
	cursor: pointer;
	transition: all 0.2s;
	font-weight: 500;
}

button:hover {
	background: #5568d3;
	transform: translateY(-2px);
	box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

button:active {
	transform: translateY(0);
}

#results {
	background: #f5f5f5;
	border-radius: 8px;
	padding: 1.5rem;
}

#output {
	background: #1e1e1e;
	color: #d4d4d4;
	padding: 1rem;
	border-radius: 6px;
	overflow-x: auto;
	font-family: 'Monaco', 'Courier New', monospace;
	font-size: 0.9rem;
	line-height: 1.5;
	white-space: pre-wrap;
	word-wrap: break-word;
}

.info-section ul {
	list-style: none;
	padding-left: 0;
}

.info-section li {
	padding: 0.75rem;
	margin-bottom: 0.5rem;
	background: #f8f9fa;
	border-left: 4px solid #667eea;
	border-radius: 4px;
}

.info-section strong {
	color: #667eea;
}

code {
	background: #e8eaf6;
	padding: 0.2rem 0.4rem;
	border-radius: 3px;
	font-family: 'Monaco', 'Courier New', monospace;
	font-size: 0.9em;
	color: #5e35b1;
}

footer {
	background: #f8f9fa;
	padding: 1.5rem 2rem;
	text-align: center;
	border-top: 1px solid #e0e0e0;
}

footer a {
	color: #667eea;
	text-decoration: none;
	font-weight: 500;
	margin: 0 0.5rem;
}

footer a:hover {
	text-decoration: underline;
}

@media (max-width: 600px) {
	body {
		padding: 1rem;
	}

	header {
		padding: 2rem 1rem;
	}

	header h1 {
		font-size: 1.5rem;
	}

	section {
		padding: 1.5rem;
	}

	.test-group {
		flex-direction: column;
	}

	button {
		width: 100%;
	}
}