modrinth/packages/ui/src/components/base/LoadingIndicator.vue

<template>
	<div class="w-full flex items-center justify-center flex-col gap-2">
		<div class="title">Loading</div>
		<div class="placeholder"></div>
		<div class="placeholder"></div>
		<div class="placeholder"></div>
	</div>
</template>

<script setup></script>
<style scoped>
.title {
	position: absolute;
	z-index: 1;
	font-weight: bold;
	color: var(--color-contrast);

	&::after {
		content: '';
		animation: dots 2s infinite;
	}
}

@keyframes dots {
	25% {
		content: '';
	}
	50% {
		content: '.';
	}
	75% {
		content: '..';
	}
	0%,
	100% {
		content: '...';
	}
}

.placeholder {
	border-radius: var(--radius-lg);
	width: 100%;
	height: 4rem;
	opacity: 0.25;
	position: relative;
	overflow: hidden;
	background-color: var(--color-raised-bg);
	animation: pop 4s ease-in-out infinite;
	border: 1px solid transparent;

	&::before {
		content: '';
		position: absolute;
		inset: 0;
		background-image: linear-gradient(
			-45deg,
			transparent 30%,
			rgba(196, 217, 237, 0.075) 50%,
			transparent 70%
		);
		animation: shimmer 4s ease-in-out infinite;
	}

	&:nth-child(2)::before {
		animation-delay: 0s;
	}

	&:nth-child(3)::before {
		animation-delay: 0.3s;
	}

	&:nth-child(4)::before {
		animation-delay: 0.6s;
	}

	&:nth-child(2) {
		animation-delay: 0s;
	}

	&:nth-child(3) {
		animation-delay: 0.3s;
	}

	&:nth-child(4) {
		animation-delay: 0.6s;
	}
}

@keyframes pop {
	from {
		opacity: 0.25;
		border-color: transparent;
	}
	50% {
		opacity: 0.5;
		border-color: var(--color-button-bg);
	}
	to {
		opacity: 0.25;
		border-color: transparent;
	}
}

@keyframes shimmer {
	from {
		transform: translateX(-80%);
	}
	50%,
	to {
		transform: translateX(80%);
	}
}
</style>