* {
	box-sizing: border-box;
	font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
		sans-serif;
}

body {
	margin: 0;
	padding: 0;
	background: #0f172a;
	color: #e5e7eb;
	display: flex;
	justify-content: center;
	align-items: center;
	min-height: 100vh;
}

.app {
	background: #020617;
	border-radius: 12px;
	border: 1px solid #1f2937;
	padding: 16px;
	width: 100%;
	max-width: 600px;
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

h1 {
	margin-top: 0;
	font-size: 1.4rem;
	text-align: center;
	color: #f9fafb;
}

.messages {
	height: 400px;
	overflow-y: auto;
	background: #020617;
	border: 1px solid #1f2937;
	border-radius: 8px;
	padding: 8px;
	margin-bottom: 10px;
}

.message {
	padding: 6px 8px;
	border-radius: 4px;
	margin-bottom: 6px;
	font-size: 0.95rem;
	line-height: 1.4;
}

.message.user {
	background: #1f2937;
	align-self: flex-end;
}

.message.assistant {
	background: #111827;
}

.chat-form {
	display: flex;
	gap: 8px;
}

.chat-form input {
	flex: 1;
	padding: 8px 10px;
	border-radius: 6px;
	border: 1px solid #4b5563;
	background: #020617;
	color: #e5e7eb;
}

.chat-form button {
	padding: 8px 14px;
	border-radius: 6px;
	border: none;
	background: #2563eb;
	color: white;
	cursor: pointer;
}

.chat-form button:hover {
	background: #1d4ed8;
}