.overlay {
	position: fixed; /* 또는 fixed */
	top: 0;
	left: 0;
	width: 100vw;
	height: 100vh;
	background: rgba(0, 0, 0, 0.4); /* 어두운 투명 배경 */
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 9999;
}

.loader {
	width: 48px;
	height: 48px;
	border: 6px solid #fff;
	border-top: 6px solid #888;
	border-radius: 50%;
	animation: spin 1s linear infinite;
}

@keyframes spin {
	0% { transform: rotate(0deg); }
	100% { transform: rotate(360deg); }
}