/**
 * Image Grid Module Styles (4-column grid with lightbox)
 *
 * @package WP_R2Go4_Detail
 */

.wp-r2go4-image-grid-module {
	width: 100%;
}

/* Anchor target for tab navigation with header offset */
.wp-r2go4-anchor-target {
	position: relative;
	top: -50px;
	visibility: hidden;
	height: 0;
}

/* Spacing for Grundrisse section below Immobilienbilder */
.wp-r2go4-grundrisse-module {
	margin-top: 80px;
}

.wp-r2go4-image-grid-title {
	margin: 0 0 50px 0;
}

/* 4-Column Grid */
.wp-r2go4-image-grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 20px;
}

.wp-r2go4-image-grid-item {
	position: relative;
	aspect-ratio: 4 / 3;
	overflow: hidden;
	border-radius: 0;
	background-color: #f5f5f5;
}

.wp-r2go4-image-grid-button {
	display: block;
	width: 100%;
	height: 100%;
	padding: 0;
	border: none;
	background: none;
	cursor: pointer;
	position: relative;
}

.wp-r2go4-image-grid-img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: center;
	display: block;
	transition: transform 0.3s ease;
}

.wp-r2go4-image-grid-button:hover .wp-r2go4-image-grid-img {
	transform: scale(1.05);
}

/* Overlay with zoom icon */
.wp-r2go4-image-grid-overlay {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background-color: rgba(0, 0, 0, 0);
	display: flex;
	align-items: center;
	justify-content: center;
	transition: background-color 0.3s ease;
}

.wp-r2go4-image-grid-button:hover .wp-r2go4-image-grid-overlay {
	background-color: rgba(0, 0, 0, 0.3);
}

.wp-r2go4-image-grid-zoom {
	color: white;
	opacity: 0;
	transform: scale(0.8);
	transition: opacity 0.3s ease, transform 0.3s ease;
}

.wp-r2go4-image-grid-button:hover .wp-r2go4-image-grid-zoom {
	opacity: 1;
	transform: scale(1);
}

/* Lightbox */
.wp-r2go4-image-grid-lightbox {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 99999;
	display: none;
}

.wp-r2go4-image-grid-lightbox.wp-r2go4-lightbox-open {
	display: block;
}

.wp-r2go4-image-grid-lightbox-overlay {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background-color: rgba(0, 0, 0, 0.9);
}

.wp-r2go4-image-grid-lightbox-content {
	position: relative;
	width: 100%;
	height: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 2rem;
}

.wp-r2go4-image-grid-lightbox-close {
	position: absolute;
	top: 1rem;
	right: 1rem;
	width: 48px;
	height: 48px;
	padding: 0;
	border: none;
	background-color: rgba(255, 255, 255, 0.1);
	color: #ffffff;
	border-radius: 50%;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	transition: background-color 0.2s;
	z-index: 10;
	flex-shrink: 0;
}

.wp-r2go4-image-grid-lightbox-close:hover {
	background-color: rgba(255, 255, 255, 0.2);
}

/* CSS-based X icon (no dashicons dependency) */
.wp-r2go4-image-grid-lightbox-close::before,
.wp-r2go4-image-grid-lightbox-close::after {
	content: '';
	position: absolute;
	width: 20px;
	height: 2px;
	background-color: #ffffff;
	top: 50%;
	left: 50%;
}

.wp-r2go4-image-grid-lightbox-close::before {
	transform: translate(-50%, -50%) rotate(45deg);
}

.wp-r2go4-image-grid-lightbox-close::after {
	transform: translate(-50%, -50%) rotate(-45deg);
}

.wp-r2go4-image-grid-lightbox-nav {
	position: absolute;
	top: 50%;
	transform: translateY(-50%);
	width: 48px;
	height: 48px;
	padding: 0;
	border: none;
	background-color: rgba(255, 255, 255, 0.1);
	color: #ffffff;
	border-radius: 50%;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	transition: background-color 0.2s;
	z-index: 10;
	flex-shrink: 0;
}

.wp-r2go4-image-grid-lightbox-nav:hover {
	background-color: rgba(255, 255, 255, 0.2);
}

/* CSS-based arrow icons (no dashicons dependency) */
.wp-r2go4-image-grid-lightbox-nav::after {
	content: '';
	position: absolute;
	width: 10px;
	height: 10px;
	border-right: 2px solid #ffffff;
	border-bottom: 2px solid #ffffff;
	top: 50%;
}

.wp-r2go4-image-grid-lightbox-prev {
	left: 2rem;
}

.wp-r2go4-image-grid-lightbox-prev::after {
	transform: translateY(-50%) rotate(135deg);
	left: calc(50% - 2px);
}

.wp-r2go4-image-grid-lightbox-next {
	right: 2rem;
}

.wp-r2go4-image-grid-lightbox-next::after {
	transform: translateY(-50%) rotate(-45deg);
	right: calc(50% - 2px);
}

.wp-r2go4-image-grid-lightbox-image-wrapper {
	max-width: 90%;
	max-height: 90%;
	display: flex;
	flex-direction: column;
	align-items: center;
}

.wp-r2go4-image-grid-lightbox-img {
	max-width: 100%;
	max-height: 80vh;
	width: auto;
	height: auto;
	display: block;
	box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.wp-r2go4-image-grid-lightbox-caption {
	margin-top: 1rem;
	color: #ffffff;
	font-size: 1rem;
	text-align: center;
	max-width: 600px;
}

/* Responsive */
@media (max-width: 1024px) {
	.wp-r2go4-image-grid {
		grid-template-columns: repeat(3, 1fr);
	}
}

@media (max-width: 768px) {
	.wp-r2go4-image-grid {
		grid-template-columns: repeat(2, 1fr);
		gap: 10px;
	}

	.wp-r2go4-image-grid-title {
		margin-bottom: 20px;
	}

	.wp-r2go4-image-grid-lightbox-content {
		padding: 1rem;
	}

	.wp-r2go4-image-grid-lightbox-prev {
		left: 0.5rem;
	}

	.wp-r2go4-image-grid-lightbox-next {
		right: 0.5rem;
	}

	.wp-r2go4-image-grid-lightbox-nav,
	.wp-r2go4-image-grid-lightbox-close {
		width: 2.5rem;
		height: 2.5rem;
	}
}