/* Product Detail Page - Modern Design */
:root {
  /* Color Variables */
  --primary-color: #2E5E82;        /* Main blue color */
  --primary-light: #4A7EA8;        /* Lighter blue for hover states */
  --primary-dark: #1D3F5A;         /* Darker blue for active states */
  --accent-color: #FF6A00;         /* Orange accent for highlighting */
  --accent-light: #FF8833;         /* Lighter orange for hover states */
  --text-primary: #333333;         /* Main text color */
  --text-secondary: #6C757D;       /* Secondary text color */
  --background-light: #F8F9FA;     /* Light background color */
  --background-white: #FFFFFF;     /* White background */
  --border-color: #E1E7EC;         /* Border color */
  --success-color: #28A745;        /* Success green */
  --info-color: #17A2B8;           /* Info blue */
  --warning-color: #FFC107;        /* Warning yellow */
  
  /* Font Variables */
  --font-primary: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-xxl: 1.5rem;
  --font-size-h1: 2.25rem;
  --font-size-h2: 1.75rem;
  --font-size-h3: 1.5rem;
  --line-height-base: 1.5;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  /* Shadows */
  --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  --shadow-md: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
  
  /* Transitions */
  --transition-base: all 0.3s ease;
  --transition-fast: all 0.15s ease;
  --transition-slow: all 0.5s ease;
  
  /* Border Radius */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  --border-radius-xxl: 1.5rem;
  --border-radius-circle: 50%;
}

/* Global Styles */
body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--text-primary);
  background-color: var(--background-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Hero Banner */
.product-hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  padding: var(--spacing-xl) 0;
  position: relative;
  overflow: hidden;
}

.product-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: url('/images/hero-pattern.svg') repeat;
  opacity: 0.05;
  z-index: 1;
}

.product-hero .container {
  position: relative;
  z-index: 2;
}

.product-title {
  font-size: var(--font-size-h1);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.5px;
}

.product-subtitle {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: var(--spacing-md);
  font-weight: var(--font-weight-normal);
}

.product-badge {
  display: inline-block;
  background-color: var(--accent-color);
  color: white;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: var(--shadow-sm);
}

/* Breadcrumb */
.breadcrumb-container {
  padding: var(--spacing-md) 0;
  background: linear-gradient(to right, rgba(0, 64, 120, 0.08), rgba(0, 64, 120, 0.03));
  border-bottom: 1px solid #E1E7EC;
}

.breadcrumb {
  margin-bottom: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  font-size: var(--font-size-sm);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  color: #6C757D;
  font-weight: var(--font-weight-normal);
}

.breadcrumb-item + .breadcrumb-item {
  padding-left: 0.75rem;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-top: 2px solid #004078;
  border-right: 2px solid #004078;
  transform: rotate(45deg);
  margin-right: 0.75rem;
  opacity: 0.7;
}

.breadcrumb-item a {
  color: #004078;
  text-decoration: none;
  position: relative;
  transition: all 0.3s ease;
}

.breadcrumb-item a:hover {
  color: #f2a900;
}

.breadcrumb-item.active {
  color: #373737;
  font-weight: var(--font-weight-medium);
}

@media (max-width: 768px) {
  .breadcrumb-container {
    padding: var(--spacing-sm) 0;
    background: linear-gradient(to right, rgba(0, 64, 120, 0.06), rgba(0, 64, 120, 0.02));
  }
  
  .breadcrumb {
    font-size: calc(var(--font-size-sm) - 1px);
  }
  
  .breadcrumb-item + .breadcrumb-item {
    padding-left: 0.5rem;
  }
  
  .breadcrumb-item + .breadcrumb-item::before {
    width: 6px;
    height: 6px;
    margin-right: 0.5rem;
  }
}

/* Product Container */
.product-container {
  padding: var(--spacing-xl) 0;
}

.product-section {
  background-color: var(--background-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-xl);
  overflow: hidden;
  transition: var(--transition-base);
}

.product-section:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.section-header {
  background: linear-gradient(to right, var(--primary-color), var(--primary-light));
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
  position: relative;
  overflow: hidden;
}

.section-header::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 30%;
  height: 100%;
  background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.1));
  transform: skewX(-30deg);
}

.section-title {
  margin: 0;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-medium);
}

.section-body {
  padding: var(--spacing-lg);
}

/* Product Gallery */
.product-gallery {
  position: relative;
  margin-bottom: var(--spacing-lg);
}

.product-main-image {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-md);
  object-fit: contain;
  background-color: var(--background-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  pointer-events: none;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  -webkit-user-drag: none;
}

.product-thumbnails {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.product-thumbnail {
  width: 80px;
  height: 80px;
  border-radius: var(--border-radius-sm);
  object-fit: cover;
  cursor: pointer;
  border: 2px solid var(--border-color);
  transition: var(--transition-base);
  pointer-events: none;
}

.product-thumbnail.active {
  border-color: var(--primary-color);
}

/* Product Info */
.product-info-card {
  height: 100%;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.info-card-header {
  background-color: var(--primary-color);
  color: white;
  padding: var(--spacing-md);
  text-align: center;
  font-weight: var(--font-weight-medium);
}

.info-card-body {
  padding: var(--spacing-md);
}

.info-table {
  width: 100%;
}

.info-table tr {
  border-bottom: 1px solid var(--border-color);
}

.info-table tr:last-child {
  border-bottom: none;
}

.info-table td {
  padding: var(--spacing-sm) 0;
}

.info-table td:first-child {
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
  width: 40%;
}

.info-table td:last-child {
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

/* Action Buttons */
.product-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.btn-product-action {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  text-align: center;
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  transition: var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  min-width: 120px;
}

.btn-primary-action {
  background-color: var(--accent-color);
  color: white;
  border: none;
  transition: all 0.3s ease;
}

.btn-primary-action:hover {
  background-color: var(--accent-color);
  color: rgba(255, 255, 255, 0.95);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn-primary-action:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(52, 152, 219, 0.2);
}

.btn-secondary-action {
  background-color: var(--background-light);
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
}

.btn-secondary-action:hover {
  background-color: var(--primary-light);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* Product Dimensions */
.dimensions-wrapper {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-lg);
}

.product-drawing {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-md);
  pointer-events: none;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  -webkit-user-drag: none;
}

.dimensions-table-container {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.dimensions-table-header {
  background-color: var(--primary-light);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: center;
  font-weight: var(--font-weight-medium);
}

.dimensions-table {
  width: 100%;
}

.dimensions-table tr {
  border-bottom: 1px solid var(--border-color);
}

.dimensions-table tr:last-child {
  border-bottom: none;
}

.dimensions-table td {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.dimensions-table td:first-child {
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
}

.dimensions-table td:last-child {
  text-align: right;
  font-weight: var(--font-weight-bold);
}

/* Product Description */
.product-description {
  line-height: 1.7;
}

.description-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--primary-dark);
  border-bottom: 2px solid var(--accent-color);
  padding-bottom: var(--spacing-xs);
  display: inline-block;
}

/* Applications Section */
.applications-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.application-card {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.application-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

/* 添加图片容器 */
.application-images {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: repeat(2, 1fr);
  gap: 1px;
  background-color: var(--border-color);
}

.application-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  display: block;
  background-color: var(--background-white);
}

.application-content {
  padding: var(--spacing-md);
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--background-white);
}

.application-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--primary-color);
}

.application-list {
  margin: 0;
  padding-left: var(--spacing-lg);
  flex: 1;
}

.application-list li {
  margin-bottom: var(--spacing-xs);
  line-height: 1.5;
}

/* Related Products */
.related-products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.related-product-card {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  transition: var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.related-product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.related-product-image-container {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.related-product-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: var(--transition-base);
  pointer-events: none;
}

.related-product-card:hover .related-product-image {
  transform: scale(1.05);
}

.related-product-content {
  padding: var(--spacing-md);
  background-color: var(--background-white);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.related-product-title {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-height: 1.3;
  max-height: 2.6em; /* 2倍行高，给予一些额外空间 */
}

.related-product-action {
  margin-top: auto;
  text-align: center;
}

.related-product-btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--primary-color);
  color: white;
  border-radius: var(--border-radius-sm);
  text-decoration: none;
  transition: var(--transition-base);
  font-size: var(--font-size-sm);
}

.related-product-btn:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
}

/* Features Section */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.feature-card {
  text-align: center;
  padding: var(--spacing-lg);
  background-color: var(--background-light);
  border-radius: var(--border-radius-md);
  transition: var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-sm);
  background-color: white;
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.feature-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.feature-description {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* Image Protection Styles */
.protected-image {
  pointer-events: none;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  -webkit-user-drag: none;
  -khtml-user-drag: none;
  -moz-user-drag: none;
  -o-user-drag: none;
  -webkit-touch-callout: none;
}

/* Video Modal */
.video-modal .modal-content {
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.video-modal .modal-header {
  background-color: var(--primary-color);
  color: white;
  border-bottom: none;
}

.video-modal .modal-body {
  padding: 0;
}

.video-modal .ratio {
  border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
  overflow: hidden;
}

/* Photos Modal */
.photos-modal .modal-content {
  border-radius: var(--border-radius-md);
  overflow: hidden;
}

.photos-modal .modal-header {
  background-color: var(--primary-color);
  color: white;
  border-bottom: none;
}

.photos-modal .carousel-item img {
  max-height: 70vh;
  object-fit: contain;
  pointer-events: none;
}

.photos-modal .carousel-control-prev,
.photos-modal .carousel-control-next {
  width: 40px;
  height: 40px;
  background-color: var(--primary-dark);
  border-radius: var(--border-radius-circle);
  opacity: 0.7;
  top: 50%;
  transform: translateY(-50%);
  margin: 0 var(--spacing-md);
}

.photos-modal .carousel-control-prev:hover,
.photos-modal .carousel-control-next:hover {
  opacity: 1;
}

.photos-modal .carousel-indicators {
  position: relative;
  margin: var(--spacing-md) 0 0;
}

.photos-modal .carousel-indicators button {
  width: 10px;
  height: 10px;
  border-radius: var(--border-radius-circle);
  background-color: var(--border-color);
  opacity: 0.7;
  margin: 0 var(--spacing-xs);
}

.photos-modal .carousel-indicators button.active {
  background-color: var(--primary-color);
  opacity: 1;
}

/* Responsive Adjustments */
@media (max-width: 1199px) {
  :root {
    --font-size-h1: 2rem;
    --font-size-h2: 1.625rem;
    --font-size-h3: 1.375rem;
  }
}

@media (max-width: 991px) {
  .dimensions-wrapper {
    grid-template-columns: 1fr;
  }
  
  .product-gallery {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: var(--spacing-xl);
  }
  
  .applications-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
}

@media (max-width: 767px) {
  :root {
    --font-size-h1: 1.75rem;
    --font-size-h2: 1.5rem;
    --font-size-h3: 1.25rem;
    --spacing-xl: 1.5rem;
    --spacing-xxl: 2rem;
  }
  
  .section-body {
    padding: var(--spacing-md);
  }
  
  .product-actions {
    flex-direction: column;
  }
  
  .btn-product-action {
    width: 100%;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .related-products-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
  
  .applications-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 575px) {
  .product-thumbnails {
    justify-content: center;
  }
  
  .product-thumbnail {
    width: 60px;
    height: 60px;
  }
  
  .related-products-grid {
    grid-template-columns: 1fr;
  }
}

/* ----------------------------------------------------------------
	Header Styles
-----------------------------------------------------------------*/
/* Header Styles */
.top-header {
  background: var(--primary-dark);
  color: white;
  padding: 8px 0;
  font-size: 14px;
}

.top-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.contact-info {
  display: flex;
  gap: 20px;
}

.contact-info span {
  transition: color 0.3s;
  cursor: pointer;
}

.contact-info span:hover {
  color: var(--primary-color);
}

.language-selector {
  display: flex;
  align-items: center;
  gap: 8px;
}

.language-selector a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s;
}

.language-selector a:hover {
  color: var(--primary-color);
}

.main-header {
  padding: 20px 0;
  background: white;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.main-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  max-height: 60px;
}

.nav-menu {
  display: flex;
  gap: 30px;
}

.nav-menu a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.nav-menu a:hover {
  color: var(--primary-color);
}

/* Header 样式更新 */
.header-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

.menu-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--secondary-color);
  font-size: 16px;
  transition: color 0.3s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
}

.menu-btn:hover {
  color: var(--primary-color);
}

.menu-icon {
  font-size: 20px;
}

.menu-text {
  font-weight: 500;
  letter-spacing: 1px;
}

/* ----------------------------------------------------------------
	Footer Styles
-----------------------------------------------------------------*/
/* Footer Styles */
footer {
  background: var(--primary-dark);
  color: white;
  padding: 8px 0;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-right a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s;
}

.footer-right a:hover {
  color: var(--primary-color);
}

.footer-divider {
  margin: 0 8px;
  color: rgba(255,255,255,0.5);
}

/* 返回顶部按钮样式 */
#topBtn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: rgba(46, 94, 130, 0.8); /* 使用半透明背景 */
  border: none;
  transition: all 0.3s;
  border-radius: 4px; /* 添加圆角 */
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1000;
  color: #ffffff; /* 确保箭头为纯白色 */
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2); /* 添加阴影效果 */
}

#topBtn:hover {
  background: var(--primary-color);
  opacity: 1;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

#topBtn svg {
  transition: transform 0.3s;
  fill: #ffffff; /* 确保SVG图标为白色 */
  stroke: #ffffff; /* 添加描边 */
  stroke-width: 1; /* 描边宽度 */
}

#topBtn:hover svg {
  transform: translateY(-2px);
}

/* Additional Media Queries for Header & Footer */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .menu-btn {
    padding: 5px;
  }
  
  .menu-text {
    display: none;
  }
  
  .side-menu {
    width: 280px;
    left: -280px;
  }
  
  .side-menu-wrapper.active .side-menu {
    transform: translateX(280px);
  }
  
  .footer-container {
    flex-direction: column;
    gap: 15px;
    padding: 15px 0;
  }
  
  .footer-right {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .contact-info {
    flex-direction: column;
    gap: 5px;
  }
  
  .language-selector {
    display: none;
  }
}

/* ----------------------------------------------------------------
	Side Menu Styles
-----------------------------------------------------------------*/
/* 侧边菜单样式 */
.side-menu-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  visibility: hidden;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  will-change: visibility;
}

.side-menu-wrapper.active {
  visibility: visible;
}

.side-menu {
  position: fixed;
  top: 0;
  left: -320px;
  width: 320px;
  height: 100%;
  background: rgba(44, 62, 80, 0.95);
  box-shadow: 2px 0 10px rgba(0,0,0,0.1);
  transition: transform 0.3s ease-out;
  -webkit-transition: -webkit-transform 0.3s ease-out;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  z-index: 2;
  will-change: transform;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.side-menu-wrapper.active .side-menu {
  transform: translateX(320px);
  -webkit-transform: translateX(320px);
}

.side-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  opacity: 0;
  transition: opacity 0.3s ease-out;
  -webkit-transition: opacity 0.3s ease-out;
  z-index: 1;
  will-change: opacity;
  pointer-events: none;
}

.side-menu-wrapper.active .side-menu-overlay {
  opacity: 1;
  pointer-events: auto;
}

.side-menu-header {
  padding: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: flex-end;
}

.close-menu {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: #fff;
  padding: 5px;
  transition: color 0.3s;
}

.close-menu:hover {
  color: var(--primary-color);
}

.side-menu-content {
  padding: 20px;
}

.menu-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.menu-item {
  margin-bottom: 0 !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
}

.menu-item:last-child {
  border-bottom: none !important;
}

.menu-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  text-decoration: none;
  font-size: 16px;
  padding: 15px 10px !important;
  transition: all 0.3s ease;
}

.menu-link:hover {
  color: var(--primary-color);
  background-color: rgba(255, 255, 255, 0.05);
}

.submenu {
  list-style: none;
  padding: 0;
  margin: 0;
  background: transparent;
  border-radius: 0;
  border-left: none;
  display: block !important;
  padding-left: 15px;
}

.submenu li {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin: 0;
}

.submenu li:last-child {
  border-bottom: none;
}

.submenu a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  padding: 12px 15px 12px 15px;
  display: block;
  font-size: 14px;
  transition: all 0.3s;
  position: relative;
}

.submenu a:before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.3);
  transition: background-color 0.3s, transform 0.2s;
}

.submenu a:hover {
  color: var(--primary-color);
  background: rgba(255, 255, 255, 0.05);
  padding-left: 20px;
}

.submenu a:hover:before {
  background-color: var(--primary-color);
  transform: translateY(-50%) scale(1.2);
}

.has-submenu > .menu-link {
  color: #fff;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 14px;
  padding: 15px 0 15px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15) !important;
  background-color: transparent;
  display: block;
  padding-left: 10px;
  position: relative;
}

.has-submenu > .menu-link:after {
  content: none;
}

/* 禁止滚动类 */
.no-scroll {
  overflow: hidden !important;
  width: 100%;
  position: fixed;
  overscroll-behavior: none;
  -ms-scroll-chaining: none;
}

/* 优化滚动条样式 */
.side-menu::-webkit-scrollbar {
  width: 6px;
}

.side-menu::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
}

.side-menu::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
}

.side-menu::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Custom style for Conversion Sidebar */
aside .container ul li a {
  /* Add a subtle left border for visual separation, initially transparent */
  border-left: 3px solid transparent;
  transition: background-color 0.2s ease-in-out, border-left-color 0.2s ease-in-out, color 0.2s ease-in-out;
  color: var(--text-secondary); /* Default link color */
}

aside .container ul li a:not(.active-sub-sidebar-link):hover {
  background-color: rgba(74, 126, 168, 0.1); /* Lighter blue, 10% opacity */
  color: var(--primary-dark); /* Darker text on hover */
  border-left-color: var(--primary-light); /* Show light blue border on hover */
}

aside .container ul li a.active-sub-sidebar-link {
  background-color: rgba(46, 94, 130, 0.15); /* --primary-color with 15% opacity */
  color: var(--primary-dark); /* Darker text for active */
  font-weight: var(--font-weight-medium); /* Slightly bolder text */
  border-left-color: var(--primary-color); /* Show main blue border for active */
}

/* Ensure span text inherits color */
aside .container ul li a span.sub-sidebar-text {
  color: inherit; /* Make sure the text color matches the link state */
}