:root {
	--bg-color: #000;
	--text-color: #e0e0e0;
	--card-bg: #1c1c1c;
	--accent-color: #2196F3;
	--input-border: #555;
	--input-focus: #90caf9;
}
body {
	background-color: var(--bg-color);
	color: var(--text-color);
	font-family: sans-serif;
	margin: 0;
	padding: 0;
}
.container {
	width: 95%;
	max-width: 350px;
	margin: 10px auto;
	padding: 10px;
}
h3 {
	text-align: center;
	font-size: 20px;
	margin-bottom: 10px;
}
.card {
	background: var(--card-bg);
	border-radius: 4px;
	box-shadow: 0 2px 4px rgba(0,0,0,0.7);
	margin-bottom: 10px;
}
.card .card-content {
	padding: 20px;
}
.card .card-title {
	font-size: 18px;
	margin-bottom: 35px;
	text-align: center;
}
.input-field {
	margin-bottom: 20px;
	position: relative;
}
.input-field input {
	width: 80%;
	padding: 12px 12px 12px 40px;
	border: none;
	border-bottom: 1px solid var(--input-border);
	background: transparent;
	color: var(--text-color);
	font-size: 16px;
	outline: none;
	transition: border-color 0.3s;
}
.input-field input:focus {
	border-bottom: 2px solid var(--input-focus);
}
.input-field .icon {
	position: absolute;
	left: 10px;
	top: 50%;
	transform: translateY(-50%);
	width: 20px;
	height: 20px;
}
.btn {
	background-color: var(--accent-color);
	color: #fff;
	border: none;
	padding: 12px;
	border-radius: 4px;
	cursor: pointer;
	font-size: 16px;
	width: 100%;
	box-shadow: 0 2px 2px rgba(0,0,0,0.3);
	margin-top: 10px;
}
.btn:hover {
	background-color: #1976D2;
}
.btn-link {
	background-color: #37474F;
	color: #fff;
	border: none;
	padding: 12px;
	border-radius: 4px;
	cursor: pointer;
	font-size: 16px;
	width: 100%;
	box-shadow: 0 2px 2px rgba(0,0,0,0.3);
	margin-top: 10px;
}
.card-panel {
	width: 80%;
	padding: 10px;
	border-radius: 4px;
	margin: 10px auto;
	font-size: 16px;
	text-align: center;
}
.red { background-color: #f44336; }
.green { background-color: #4CAF50; }
@media (max-width: 600px) {
	.input-field input {
		font-size: 18px;
		padding: 14px 14px 14px 44px;
	}
	.btn, .btn-link {
		font-size: 18px;
		padding: 14px;
	}
	h3 {
		font-size: 22px;
	}
}