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

body {
	font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
	line-height: 1.6;
	color: #333;
	background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
	min-height: 100vh;
	padding: 20px;
}

.container {
	max-width: 800px;
	margin: 0 auto;
	background: white;
	border-radius: 10px;
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
	overflow: hidden;
}

header {
	background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
	color: white;
	padding: 40px;
	text-align: center;
}

header h1 {
	font-size: 2.5em;
	margin-bottom: 10px;
}

.subtitle {
	font-size: 1.2em;
	opacity: 0.9;
}

main {
	padding: 40px;
}

.content {
	text-align: center;
}

.content p {
	margin-bottom: 30px;
	font-size: 1.1em;
	color: #666;
}

.btn {
	background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
	color: white;
	border: none;
	padding: 15px 30px;
	font-size: 1.1em;
	border-radius: 5px;
	cursor: pointer;
	transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
	transform: translateY(-2px);
	box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn:active {
	transform: translateY(0);
}

.output {
	margin-top: 30px;
	padding: 20px;
	background: #f5f5f5;
	border-radius: 5px;
	min-height: 50px;
	font-weight: bold;
	color: #667eea;
}

footer {
	background: #f5f5f5;
	padding: 20px;
	text-align: center;
	color: #666;
}