body {
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
	background: #f0f0f1;
	display: flex;
	justify-content: center;
	align-items: center;
	min-height: 100vh;
	margin: 0;
}
.sheetpop-dl-container {
	background: #fff;
	padding: 40px;
	border-radius: 8px;
	box-shadow: 0 1px 3px rgba(0,0,0,0.1);
	text-align: center;
	max-width: 400px;
}
.sheetpop-dl-container h1 { font-size: 20px; color: #1d2327; margin: 0 0 10px; }
.sheetpop-dl-container p { color: #50575e; margin: 0 0 20px; }
.sheetpop-dl-container .note { font-size: 12px; color: #999; margin-top: 20px; }
.sheetpop-dl-container a.button {
	display: inline-block;
	padding: 12px 24px;
	background: #0073aa;
	color: #fff;
	text-decoration: none;
	border-radius: 4px;
	font-weight: bold;
}
.sheetpop-dl-container a.button:hover { background: #005a87; }
.sheetpop-spinner-icon {
	width: 40px;
	height: 40px;
	border: 4px solid #0073aa;
	border-top-color: transparent;
	border-radius: 50%;
	animation: sheetpop-spin 1s linear infinite;
	margin: 0 auto 20px;
}
@keyframes sheetpop-spin {
	to { transform: rotate(360deg); }
}
.sheetpop-icon-success {
	width: 50px;
	height: 50px;
	background: #46b450;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	margin: 0 auto 20px;
	color: #fff;
	font-size: 28px;
}
.sheetpop-icon-error {
	width: 40px;
	height: 40px;
	background: #d63638;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	margin: 0 auto 20px;
	color: #fff;
	font-size: 24px;
}