/* Posts Grid Showcase
 * Course-style card grid inspired by Educrat LearnPress style4.
 * Namespaced under .pgs-* to avoid theme collisions.
 */

.pgs-wrapper {
	--pgs-accent: #f1592a;
	--pgs-text: #15171c;
	--pgs-muted: #75787c;
	--pgs-border: #e9e9ec;
	--pgs-radius: 12px;
	--pgs-shadow: 0 6px 30px rgba(20, 23, 28, 0.06);
	--pgs-shadow-hover: 0 18px 40px rgba(20, 23, 28, 0.14);
	font-family: inherit;
	color: var(--pgs-text);
	max-width: 1280px;
	margin: 0 auto;
	position: relative;
}

/* ---------- Toolbar ---------- */
.pgs-toolbar {
	display: flex;
	flex-wrap: wrap;
	gap: 16px;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 32px;
}

.pgs-filters {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}

.pgs-filter {
	appearance: none;
	border: 1px solid var(--pgs-border);
	background: #fff;
	color: var(--pgs-muted);
	font-size: 14px;
	font-weight: 600;
	line-height: 1;
	padding: 11px 18px;
	border-radius: 999px;
	cursor: pointer;
	transition: all 0.18s ease;
}

.pgs-filter:hover {
	color: var(--pgs-text);
	border-color: var(--pgs-text);
}

.pgs-filter.is-active {
	background: var(--pgs-accent);
	border-color: var(--pgs-accent);
	color: #fff;
}

.pgs-search {
	position: relative;
	flex: 0 0 260px;
	max-width: 100%;
}

.pgs-search-input {
	width: 100%;
	border: 1px solid var(--pgs-border);
	border-radius: 999px;
	padding: 12px 42px 12px 18px;
	font-size: 14px;
	outline: none;
	transition: border-color 0.18s ease;
	box-sizing: border-box;
}

.pgs-search-input:focus {
	border-color: var(--pgs-accent);
}

.pgs-search-icon {
	position: absolute;
	right: 16px;
	top: 50%;
	transform: translateY(-50%);
	color: var(--pgs-muted);
	pointer-events: none;
}

/* ---------- Grid ---------- */
.pgs-grid {
	display: grid;
	gap: 30px;
	grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pgs-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.pgs-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.pgs-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.pgs-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.pgs-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.pgs-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

/* ---------- Card ---------- */
.pgs-card {
	background: #fff;
	border: 1px solid var(--pgs-border);
	border-radius: var(--pgs-radius);
	overflow: hidden;
	display: flex;
	flex-direction: column;
	box-shadow: var(--pgs-shadow);
	transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.pgs-card:hover {
	transform: translateY(-6px);
	box-shadow: var(--pgs-shadow-hover);
}

.pgs-card-media {
	position: relative;
	display: block;
	aspect-ratio: 16 / 11;
	overflow: hidden;
}

.pgs-card-media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
	transition: transform 0.4s ease;
}

.pgs-card:hover .pgs-card-media img {
	transform: scale(1.06);
}

.pgs-badge {
	position: absolute;
	top: 14px;
	left: 14px;
	background: #fff;
	color: var(--pgs-text);
	font-size: 12px;
	font-weight: 700;
	letter-spacing: 0.02em;
	padding: 7px 12px;
	border-radius: 6px;
	box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.pgs-card-body {
	padding: 22px 22px 24px;
	display: flex;
	flex-direction: column;
	flex: 1;
}

.pgs-card-meta {
	display: flex;
	flex-wrap: wrap;
	gap: 16px;
	margin-bottom: 12px;
	color: var(--pgs-muted);
	font-size: 13px;
}

.pgs-meta-item {
	display: inline-flex;
	align-items: center;
	gap: 5px;
}

.pgs-card-title {
	font-size: 19px;
	line-height: 1.4;
	font-weight: 700;
	margin: 0 0 10px;
}

.pgs-card-title a {
	color: var(--pgs-text);
	text-decoration: none;
	transition: color 0.18s ease;
}

.pgs-card-title a:hover {
	color: var(--pgs-accent);
}

.pgs-card-excerpt {
	color: var(--pgs-muted);
	font-size: 14px;
	line-height: 1.6;
	margin: 0 0 18px;
}

.pgs-card-footer {
	margin-top: auto;
	padding-top: 16px;
	border-top: 1px solid var(--pgs-border);
}

.pgs-card-link {
	display: inline-flex;
	align-items: center;
	gap: 4px;
	color: var(--pgs-accent);
	font-weight: 700;
	font-size: 14px;
	text-decoration: none;
}

.pgs-card-link svg {
	transition: transform 0.18s ease;
}

.pgs-card-link:hover svg {
	transform: translateX(3px);
}

/* ---------- States ---------- */
.pgs-empty {
	grid-column: 1 / -1;
	text-align: center;
	padding: 60px 20px;
	color: var(--pgs-muted);
	font-size: 16px;
}

.pgs-grid.is-loading {
	opacity: 0.45;
	pointer-events: none;
	transition: opacity 0.2s ease;
}

.pgs-loader {
	display: flex;
	justify-content: center;
	padding: 28px 0;
}

.pgs-loader[hidden] {
	display: none;
}

.pgs-spinner {
	width: 34px;
	height: 34px;
	border: 3px solid var(--pgs-border);
	border-top-color: var(--pgs-accent);
	border-radius: 50%;
	animation: pgs-spin 0.7s linear infinite;
}

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

/* ---------- Load more ---------- */
.pgs-loadmore-wrap {
	display: flex;
	justify-content: center;
	margin-top: 40px;
}

.pgs-loadmore {
	appearance: none;
	display: inline-flex;
	align-items: center;
	gap: 10px;
	border: 1px solid var(--pgs-text);
	background: var(--pgs-text);
	color: #fff;
	font-size: 15px;
	font-weight: 700;
	line-height: 1;
	padding: 15px 34px;
	border-radius: 999px;
	cursor: pointer;
	transition: all 0.18s ease;
}

.pgs-loadmore:hover {
	background: var(--pgs-accent);
	border-color: var(--pgs-accent);
}

.pgs-loadmore[hidden] {
	display: none;
}

.pgs-loadmore.is-loading {
	cursor: default;
	opacity: 0.85;
}

.pgs-loadmore-spinner {
	width: 18px;
	height: 18px;
	border-width: 2px;
	border-color: rgba(255, 255, 255, 0.4);
	border-top-color: #fff;
}

.pgs-loadmore-spinner[hidden] {
	display: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
	.pgs-cols-4, .pgs-cols-5, .pgs-cols-6 {
		grid-template-columns: repeat(3, minmax(0, 1fr));
	}
}

@media (max-width: 768px) {
	.pgs-grid,
	.pgs-cols-3, .pgs-cols-4, .pgs-cols-5, .pgs-cols-6 {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
	.pgs-toolbar {
		flex-direction: column;
		align-items: stretch;
	}
	.pgs-search {
		flex-basis: auto;
	}
}

@media (max-width: 520px) {
	.pgs-grid,
	.pgs-cols-2, .pgs-cols-3, .pgs-cols-4, .pgs-cols-5, .pgs-cols-6 {
		grid-template-columns: 1fr;
	}
}