/* Certificates Grid — styled to match screenshot */

.cert-grid-wrap {
	width: 100%;
}

.cert-grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 24px;
}

/* Card */
.cert-grid-item {
	background: #fff;
	border: 1px solid #e8e8e8;
	border-radius: 4px;
	box-shadow: 0 2px 12px rgba(0, 0, 0, 0.07);
	overflow: hidden;
	transition: transform 0.28s ease, box-shadow 0.28s ease;
	cursor: pointer;
}

.cert-grid-item:hover {
	transform: translateY(-3px);
	box-shadow: 0 8px 28px rgba(0, 0, 0, 0.13);
}

.cert-grid-link {
	display: block;
	text-decoration: none;
	color: inherit;
}

.cert-grid-link:hover {
	text-decoration: none;
	color: inherit;
}

/* Thumbnail — portrait ratio like an A4 certificate */
.cert-grid-thumb {
	position: relative;
	width: 100%;
	padding-top: 133%;  /* ~3:4 portrait ratio */
	background: #f7f7f7;
	overflow: hidden;
	border-bottom: 1px solid #efefef;
}

.cert-grid-thumb img {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: top center;
	display: block;
	transition: transform 0.4s ease;
}

.cert-grid-item:hover .cert-grid-thumb img {
	transform: scale(1.03);
}

/* PDF canvas thumbnail */
.cert-pdf-canvas {
	position: absolute;
	top: 0;
	left: 0;
	width: 100% !important;
	height: auto !important;
	display: block;
	transition: transform 0.4s ease;
}

.cert-grid-item:hover .cert-pdf-canvas {
	transform: scale(1.03);
}

/* Loading spinner shown while PDF renders */
.cert-pdf-loading {
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	background: #f2f2f2;
	font-size: 1.4rem;
	color: #bbb;
}

.cert-pdf-loading::after {
	content: '';
	width: 28px;
	height: 28px;
	border: 3px solid #ddd;
	border-top-color: #aaa;
	border-radius: 50%;
	animation: cert-spin 0.8s linear infinite;
}

@keyframes cert-spin {
	to { transform: rotate(360deg); }
}

.cert-pdf-ready .cert-pdf-loading {
	display: none;
}

/* Meta — title + date below image */
.cert-grid-meta {
	padding: 16px 18px 20px;
	text-align: center;
	background: #fff;
}

.cert-title {
	margin: 0;
	font-size: 0.8rem;
	font-weight: 400;
	font-style: italic;
	line-height: 1.4;
	color: #333;
}

/* Empty state */
.cert-grid-empty {
	color: #999;
	font-style: italic;
}

/* Responsive */
@media (max-width: 767px) {
	.cert-grid {
		grid-template-columns: repeat(2, 1fr);
		gap: 16px;
	}
}