/**
 * 导航专用样式 - 仅包含导航和下拉菜单
 * 用于产品页面等需要显示子栏目下拉菜单的页面
 */

/* 导航基础 */
.navbar-tech {
	background: transparent;
	padding: 0;
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 1030;
	transition: all 0.3s ease;
}

.navbar-tech.scrolled {
	background: #fff;
	box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

/* Logo */
.navbar-tech .navbar-brand {
	padding: 20px 0;
	transition: all 0.3s ease;
}

.navbar-tech.scrolled .navbar-brand {
	padding: 15px 0;
}

.navbar-tech .navbar-brand img {
	height: 50px;
	width: auto;
	transition: all 0.3s ease;
}

.navbar-tech.scrolled .navbar-brand img {
	height: 40px;
}

/* 导航链接 */
.navbar-tech .nav-link {
	color: #fff !important;
	font-weight: 500;
	padding: 30px 20px !important;
	font-size: 15px;
	transition: all 0.3s ease;
	position: relative;
}

.navbar-tech .nav-link:hover,
.navbar-tech .nav-item.active .nav-link {
	opacity: 0.8;
}

.navbar-tech.scrolled .nav-link {
	color: #1a1a2e !important;
	padding: 20px 20px !important;
}

.navbar-tech.scrolled .nav-link:hover,
.navbar-tech.scrolled .nav-item.active .nav-link {
	color: #0066CC !important;
	opacity: 1;
}

.navbar-tech .nav-link::after {
	display: none;
}

/* 下拉箭头 */
.navbar-tech .dropdown-toggle::after {
	border-top-color: #fff;
	margin-left: 8px;
	transition: all 0.3s ease;
}

.navbar-tech.scrolled .dropdown-toggle::after {
	border-top-color: #1a1a2e;
}

/* 下拉菜单 - 悬停显示 */
.navbar-tech .dropdown-menu {
	border: none;
	box-shadow: 0 10px 40px rgba(0,0,0,0.15);
	border-radius: 8px;
	margin-top: 0;
	padding: 10px 0;
	min-width: 220px;
	display: block;
	opacity: 0;
	visibility: hidden;
	transform: translateY(10px);
	transition: all 0.3s ease;
}

.navbar-tech .dropdown:hover .dropdown-menu {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}

.navbar-tech .dropdown:hover .dropdown-toggle::after {
	transform: rotate(180deg);
}

/* 下拉菜单项 */
.navbar-tech .dropdown-item {
	padding: 12px 25px;
	font-size: 14px;
	color: #1a1a2e;
	transition: all 0.2s ease;
	border-left: 3px solid transparent;
}

.navbar-tech .dropdown-item:hover {
	background: #f8fafc;
	color: #0066CC;
	border-left-color: #0066CC;
	padding-left: 30px;
}

/* 语言切换 */
.lang-switch {
	display: flex;
	align-items: center;
	gap: 15px;
}

.lang-switch a {
	color: #fff;
	font-size: 14px;
	text-decoration: none;
	opacity: 0.8;
	transition: opacity 0.3s;
}

.lang-switch a:hover,
.lang-switch a.active {
	opacity: 1;
	font-weight: 600;
}

.lang-switch .divider {
	color: rgba(255,255,255,0.5);
}

.navbar-tech.scrolled .lang-switch a {
	color: #1a1a2e;
}

.navbar-tech.scrolled .lang-switch .divider {
	color: #6b7280;
}

/* 占位 */
.nav-placeholder {
	display: none;
}

/* 移动端菜单按钮 */
.navbar-toggler {
	border: none;
	padding: 10px;
	outline: none !important;
}

.navbar-toggler-icon {
	background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

.navbar-tech.scrolled .navbar-toggler-icon {
	background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(26,26,46,1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* 移动端适配 */
@media (max-width: 991px) {
	.navbar-tech {
		background: #fff;
		box-shadow: 0 2px 10px rgba(0,0,0,0.1);
	}
	
	.navbar-tech .nav-link {
		color: #1a1a2e !important;
		padding: 15px 20px !important;
	}
	
	.navbar-tech .dropdown-menu {
		background: #fff;
		box-shadow: 0 4px 20px rgba(0,0,0,0.1);
		border-radius: 8px;
		margin: 10px;
		padding: 10px 0;
		opacity: 1;
		visibility: visible;
		transform: none;
		display: none;
		border: 1px solid #e2e8f0;
	}
	
	.navbar-tech .dropdown.show .dropdown-menu {
		display: block;
	}
	
	/* 移动端下拉菜单项 */
	.navbar-tech .dropdown-item {
		color: #1a1a2e;
		padding: 12px 20px;
		border-left: 3px solid transparent;
	}
	
	.navbar-tech .dropdown-item:hover {
		background: #f8fafc;
		color: #0066CC;
		border-left-color: #0066CC;
	}
	
	.nav-placeholder {
		display: block;
		height: 70px;
	}
	
	/* 移动端菜单按钮始终显示深色 */
	.navbar-toggler-icon {
		background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(26,26,46,1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
	}
}