/* ==========================================================================
   Mega Menu Styles for ART TREK FUTURE
   - 四种布局对应四张设计图
   - 只作用于 header 主导航中的 .has-mega-menu，不影响首页 Top Category Demo
   ========================================================================== */

/* 顶级菜单项（有 Mega Menu）保持与普通菜单一致的排版 */
.primary-navigation .nav-menu > li.has-mega-menu {
	position: relative;
}

/* Mega Menu 容器：默认隐藏，悬停时显示（仅桌面端） */
.primary-navigation .nav-menu > li.has-mega-menu > .submenu-dropdown.mega-menu {
	position: absolute;
	top: 100%;
	left: 0;
	right: auto;
	margin-left: 0;
	width: 96vw;
	transform: none;
	background: #ffffff00;
	padding: 12px 0 28px;
	display: none;
	z-index: 1001;
	border-radius: 0 0 24px 24px;
}

@media (min-width: 961px) {
	.primary-navigation .nav-menu > li.has-mega-menu:hover > .submenu-dropdown.mega-menu {
		display: block !important;
	}
}

/* 内部内容区域：与页面主内容同宽，限制总宽度防止溢出 */
.primary-navigation .nav-menu > li.has-mega-menu > .submenu-dropdown.mega-menu .submenu-dropdown-inner {
	width: 100%;
	margin: 0 auto;
	box-sizing: border-box;
}

/* 通用列样式 */
.mega-layout {
	display: flex;
	gap: 28px;
	align-items: stretch;
	max-width: 100%;
	box-sizing: border-box;
}

.mega-column {
	background: #ffffff;
    border-radius: 28px;
    padding: 13px 25px 90px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* 纯图片列不需要内边距，只保留外层圆角与阴影 */
.mega-column-image,
.mega-column-double-image {
	background: #FFFFFF00;
	padding: 0;
}

.mega-second-title {
	display: inline-block !important;
	text-align: center;
	font-size: 18px;
	font-weight: 600;
	color: #111 !important;
	margin-bottom: 10px;
	text-decoration: none;
}

.mega-second-title:hover {
	color: var(--primary-color);
}

.mega-third-list {
	display: flex;
	flex-direction: column;
	gap: 12px;
}

.mega-third-link {
	font-size: 12px;
	color: #777 !important;
	text-decoration: none;
	padding: 3px 0;
}

.mega-third-link:hover {
	color: var(--primary-color);
}

/* 带四级菜单的分列布局（用于 mega-layout-1 的 col-3 和 mega-layout-2 文本列） */
.mega-menu .mega-third-list-columns {
	display: flex;
	flex-direction: row; /* 关键：改为横向排列列 */
	gap: 6px;
	flex-wrap: nowrap;
}

.mega-menu .mega-third-column {
	flex: 1 1 0;
	display: flex;
	flex-direction: column;
	gap: 9px;
	min-width: 0;
}

.mega-menu .mega-third-heading {
	font-size: 13px;
	font-weight: 600;
	color: #111 !important;
	margin-bottom: 4px;
}

.mega-menu .mega-fourth-list {
	display: flex;
	flex-direction: column;
	gap: 19px;
}

.mega-menu .mega-fourth-link {
	font-size: 12px;
	color: #777 !important;
	text-decoration: none;
}

.mega-menu .mega-fourth-link:hover {
	color: var(--primary-color);
}

.mega-second-extra {
	margin-top: 16px;
	border-top: 1px solid #eee;
	padding-top: 10px;
	display: flex;
	flex-direction: column;
	gap: 4px;
}

.mega-second-link {
	font-size: 15px;
	color: #555;
	text-decoration: none;
}

.mega-second-link:hover {
	color: var(--primary-color);
}

.mega-menu a::before {
	/* Mega Menu 内所有链接不需要主导航的菱形 ::before */
	content: none !important;
	display: none !important;
}

.mega-image-link,
.mega-color-image-link,
.mega-card-image-link {
	display: block;
	overflow: hidden;
	border-radius: 24px;
}

.mega-image-bg,
.mega-color-image-bg,
.mega-card-image-bg {
	width: 100%;
	/* 基础纵横比，后续可以按具体设计微调 */
	padding-top: 73.5%;
	background-size: cover;
	background-position: center;
	transition: transform 0.45s ease;
}

.mega-image-link:hover .mega-image-bg,
.mega-color-image-link:hover .mega-color-image-bg,
.mega-card-image-link:hover .mega-card-image-bg {
	transform: scale(1.04);
}

/* 布局 1：五列混合布局（第一张图） ---------------------------------------- */
.mega-layout-1-grid {
	/* 不同列宽：第1列略窄，第2列略宽，第3列最宽，第4≈第2，第5≈第1 */
	display: grid;
	grid-template-columns: 0.68fr 1fr 1.95fr 1.1fr 0.68fr;
	gap: 14px;
	max-width: 100%;
	box-sizing: border-box;
}

.mega-layout-1-grid .mega-col-2 {
	padding: 0;
	display: flex;
}

.mega-layout-1-grid .mega-col-2 .mega-image-link {
	flex: 1 1 auto;
	height: 100%;
}

.mega-layout-1-grid .mega-col-2 .mega-image-bg {
	height: 100%;
	padding-top: 0; /* 取消固定比例，改为跟随列高度 */
}

.mega-layout-1-grid .mega-col-4 {
	row-gap: 16px;
}

.mega-column-double-image {
	gap: 16px;
}

.mega-image-top,
.mega-image-bottom {
	display: block;
}

/* 布局 2：文本 + 上一项图片交替（四列网格，第二张图） --------------------- */
.mega-layout-2-grid {
	display: grid;
	/* 文本 / 图片 / 文本 / 图片 四列交替，文本更宽、图片更窄 */
	grid-template-columns: 0.8fr 0.65fr 1fr 0.99fr;
	gap: 10px;
	max-width: 100%;
	box-sizing: border-box;
}

.mega-layout-2-image {
	padding: 0;
	display: flex; /* 让图片列内部可以拉伸到整列高度 */
}

.mega-layout-2-image .mega-image-link {
	flex: 1 1 auto;
	height: 100%;
}

.mega-layout-2-image .mega-image-bg {
	height: 100%;
	padding-top: 0; /* 跟随列高度，而不是固定比例 */
}

/* 布局 3：颜色分类布局（第三张图） ---------------------------------------- */
.mega-layout-3-grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 14px;
	max-width: 100%;
	box-sizing: border-box;
}

.mega-color-column {
	/* 父容器只负责布局，不再统一包裹背景与圆角 */
	padding: 0;
	display: flex;
	gap: 14px;
	align-items: stretch;
	flex-direction: row; /* 左右排布：左图右文 */
	background: transparent;
	border-radius: 0;
	box-shadow: none;
}

.mega-color-image-link {
	display: block;
	flex: 1 1 50%;
	height: 100%;
}

.mega-color-image-bg {
	height: 100%;
	padding-top: 0;
}

.mega-color-text {
	flex: 1 1 50%;
	padding: 12px 34px 100px;
	background: #ffffff;
	border-radius: 24px;
	box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
	min-width: 0;
}

/* 布局 3：第一个颜色列的三级菜单改为一行两列布局 */
.mega-layout-3-grid .mega-color-column:first-child .mega-color-text .mega-third-list {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 0;
    row-gap: 12px;
}

@media (min-width: 961px) {
	/* Layout 3 image/text width progression: narrow, +5%, +10% */
	.mega-layout-3-grid .mega-color-column .mega-color-image-link {
		flex: 0 0 59.7%;
		max-width: 58%;
	}

	.mega-layout-3-grid .mega-color-column .mega-color-text {
		max-width: 42%;
	}

	.mega-layout-3-grid .mega-color-column:nth-child(2) .mega-color-image-link {
		flex-basis: 63%;
		max-width: 59%;
	}

	.mega-layout-3-grid .mega-color-column:nth-child(2) .mega-color-text {
		flex-basis: 37%;
		max-width: 37%;
	}

	.mega-layout-3-grid .mega-color-column:nth-child(3) .mega-color-image-link {
		flex-basis: 57%;
		max-width: 68%;
	}

	.mega-layout-3-grid .mega-color-column:nth-child(3) .mega-color-text {
		flex-basis: 32%;
		max-width: 32%;
	}
}

/* 布局 4：大图卡片布局（第四张图） ---------------------------------------- */
.mega-layout-4-grid {
	display: grid;
	/* 文本列略宽，图片列略窄，保持现在的整体布局，仅区分两者宽度 */
	grid-template-columns:0.22fr 0.4fr 0.22fr 0.4fr 0.22fr 0.4fr 0.22fr;
	gap: 10px;
	align-items: stretch;
	max-width: 100%;
	box-sizing: border-box;
}

/* 列本身不允许超出容器宽度 */
.mega-column,
.mega-color-column,
.mega-card-column {
	max-width: 100%;
	box-sizing: border-box;
}

.mega-card-column {
	padding: 0;
	background: transparent;
	border-radius: 0;
	box-shadow: none;
}

.mega-card-column-image {
	display: flex;
	flex-direction: column;
	border-radius: 24px;
	overflow: hidden;
}

.mega-card-column-text {
	padding: 12px 18px 100px;
	background: #ffffff;
	border-radius: 24px;
	box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
	display: flex;
	flex-direction: column;
}

.mega-card-image-link {
	display: block;
	height: 100%;
}

.mega-card-image-bg,
.mega-card-image-placeholder {
	height: 100%;
	padding-top: 0;
	min-height: 180px;
	border-radius: 24px;
	background-size: cover;
	background-position: center;
	box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

.mega-card-image-placeholder {
	background: #f5f5f5;
}

/* 响应式：中等屏幕收缩列数 */
@media (max-width: 1400px) {
	.mega-layout-4-grid {
		/* 1400px 以下：保留「文本宽 / 图片窄」的比例 */
		grid-template-columns:0.22fr 0.4fr 0.22fr 0.4fr 0.22fr 0.4fr 0.22fr;
	}
}

@media (max-width: 1200px) {
	.primary-navigation .nav-menu > li.has-mega-menu > .submenu-dropdown.mega-menu .submenu-dropdown-inner {
		padding: 0 24px;
	}

	.mega-layout-1-grid {
		grid-template-columns: repeat(4, minmax(0, 1fr));
	}

	.mega-layout-4-grid {
		/* 1200px 以下：继续保持文本列更宽、图片列更窄 */
		grid-template-columns:0.22fr 0.4fr 0.22fr 0.4fr 0.22fr 0.4fr 0.22fr;
	}
}

@media (max-width: 960px) {
	/* Mobile: show mega menu on click - full screen overlay */
	.primary-navigation .nav-menu > li.has-mega-menu > .submenu-dropdown.mega-menu {
		position: fixed !important;
		top: 0 !important;
		left: 0 !important;
		right: auto !important;
		bottom: 0 !important;
		width: 100vw !important;
		height: 100vh !important;
		max-width: 100vw !important;
		margin: 0 !important;
		padding: 0 !important;
		background: #ffffff;
		box-shadow: none;
		border-radius: 0;
		display: none;
		z-index: 9999;
		transform: none !important;
		overflow: hidden;
	}

	.primary-navigation .nav-menu > li.has-mega-menu.submenu-open > .submenu-dropdown.mega-menu {
		display: block !important;
	}

	/* Inner scrollable container */
	.primary-navigation .nav-menu > li.has-mega-menu > .submenu-dropdown.mega-menu .submenu-dropdown-inner {
		max-width: 100%;
		height: 100%;
		padding: 12px 12px 25px;
		overflow-y: auto;
		-webkit-overflow-scrolling: touch;
	}

	.mega-layout,
	.mega-layout-1-grid,
	.mega-layout-2-grid,
	.mega-layout-3-grid,
	.mega-layout-4-grid {
		display: flex;
		flex-direction: column;
		gap: 10px;
	}

	.mega-column {
		width: 100%;
		padding: 10px 12px;
		border-radius: 14px;
	}

	.mega-column-image,
	.mega-column-double-image {
		padding: 0;
	}

	.mega-color-column,
	.mega-card-column {
		flex-direction: column;
		gap: 10px;
	}

	.mega-color-image-link,
	.mega-color-text,
	.mega-card-column-image,
	.mega-card-column-text {
		flex: 1 1 auto;
		max-width: 100%;
		width: 100%;
		flex-basis: auto;
	}

	.mega-image-bg,
	.mega-color-image-bg,
	.mega-card-image-bg {
		padding-top: 0 !important;
		height: auto !important;
		border-radius: 10px;
	}

	.mega-column-double-image {
		gap: 10px;
	}

	.mega-third-list-columns {
		flex-direction: column;
		gap: 10px;
	}

	.mega-third-column {
		width: 100%;
		gap: 0px !important;
	}

	.mega-third-heading {
		font-size: 13px;
		margin-bottom: 6px;
	}

	.mega-second-title {
		font-size: 16px;
		margin-bottom: 8px;
	}

	.mega-third-link {
		font-size: 11px;
		padding: 5px 0;
	}

	.mega-color-title {
		font-size: 12px;
	}

	.mega-color-subtitle {
		font-size: 10px;
	}
	
	.mega-third-link,
	.mega-fourth-link {
		font-size: 13px !important;
		padding: 5px 0;
	}
	
	.mega-third-list {
		gap: 10px;
	}
	
	.mega-fourth-list {
		gap: 2px !important;
	}

	/* Close button - real DOM element created by JS */
	.mega-menu-close-btn {
		position: fixed !important;
		top: 10px !important;
		right: 10px !important;
		width: 36px;
		height: 36px;
		display: flex !important;
		align-items: center;
		justify-content: center;
		font-size: 36px;
		line-height: 1;
		color: #FFFFFF;
		background: rgb(0, 0, 0);
		border: none;
		border-radius: 50%;
		cursor: pointer;
		z-index: 10001 !important;
		transition: background 0.3s ease;
		padding: 0;
		margin: 0;
	}

	.mega-menu-close-btn:hover,
	.mega-menu-close-btn:active {
		background: rgba(0, 0, 0, 0.1);
	}
	
	.mega-menu-close-btn svg {
		width: 18px;
		height: 18px;
	}

	/* Add indicator for expandable menu items */
	.primary-navigation .nav-menu > li.has-mega-menu > a::after {
		content: '';
		display: inline-block;
		width: 6px;
		height: 6px;
		border-width: 1.5px;
		border: 2px solid currentColor;
		border-left: 0;
		border-top: 0;
		transform: rotate(45deg);
		margin-left: 5px;
		transition: transform 0.3s ease;
	}

	.primary-navigation .nav-menu > li.has-mega-menu.submenu-open > a::after {
		transform: rotate(-135deg);
	}

	/* Prevent body scroll when mega menu is open */
	body.mega-menu-open {
		overflow: hidden !important;
	}
}