/* CSS Variables - 浅色科技主题 */
:root {
  /* Primary Colors - 浅色科技蓝灰 */
  --primary-dark: #F5F7FA;
  --primary-medium: #E8EEF5;
  --primary-light: #D9E6F2;

  /* Accent Colors - 科技蓝和活力橙 */
  --accent-blue: #2563EB;
  --accent-blue-light: #3B82F6;
  --accent-orange: #F59E0B;
  --accent-orange-light: #FBBF24;

  /* Text Colors - 深色文字以适应浅色背景 */
  --text-primary: #1F2937;
  --text-secondary: #4B5563;
  --text-muted: #9CA3AF;

  /* Background Colors - 浅色系 */
  --bg-dark: #F5F7FA;
  --bg-card: #FFFFFF;
  --bg-input: #F8F9FA;
  --bg-light: #FAFBFC;

  /* Border Colors */
  --border-light: #E5E7EB;
  --border-medium: #D1D5DB;

  /* Shadow - 增加层次感 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* 下拉菜单分组样式 - 减少材质类别的缩进 */
select optgroup {
  padding-left: 0;
  text-indent: 0;
}

select optgroup option {
  padding-left: 16px;
}


/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 固定滚动条状态，防止布局变化 */
html {
  overflow-y: scroll;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #F5F7FA 0%, #E8EEF5 50%, #D9E6F2 100%);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  /* 确保内容不会被滚动条挤压 */
  min-width: 100vw;
}

a {
  color: var(--accent-blue-light);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--accent-orange);
}

/* Navigation */
.navbar {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
  min-width: 200px;
}

.nav-brand:hover {
  color: var(--accent-orange);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  justify-content: center;
  flex: 1;
}

#user-status {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  min-width: 300px;
  justify-content: flex-end;
  opacity: 0;
  transition: opacity 0.15s ease;
}

#user-status.visible {
  opacity: 1;
}

#user-status .btn-login {
  padding: 8px 16px;
  background: #2d2d2d;
  color: white;
  border-radius: 6px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.3s ease;
  border: none;
}

#user-status .btn-login:hover {
  background: #1a1a1a;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

#user-status .btn-login.disabled {
  background: #999;
  color: #ddd;
  cursor: not-allowed;
  pointer-events: none;
  opacity: 0.6;
}

#user-status .btn-admin {
  padding: 6px 12px;
  background: var(--accent-orange);
  color: white;
  border-radius: 6px;
  font-size: 13px;
  text-decoration: none;
}

#user-status .btn-usage {
  padding: 6px 12px;
  background: var(--accent-blue);
  color: white;
  border-radius: 6px;
  font-size: 13px;
  text-decoration: none;
}

#user-status .btn-usage:hover {
  background: #1d4ed8;
}

#user-status .btn-logout {
  padding: 6px 12px;
  background: transparent;
  border: 1px solid var(--border-medium);
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
}

#user-status .btn-logout:hover {
  border-color: var(--accent-orange);
  color: var(--accent-orange);
}

#user-status .welcome-text {
  color: var(--text-secondary);
  font-size: 14px;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 1.05rem;
  font-weight: 600;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: white;
  background-color: var(--accent-blue);
}

/* Main Content */
.main-content {
  max-width: 1600px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
  min-height: calc(100vh - 200px);
}

/* 主布局容器 - 左右分栏 */
.main-layout-wrapper {
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
}

/* 左侧内容区域 - 包含所有子模块 - 占据更多空间 */
.left-content {
  flex: 1;
  min-width: 0;
}

/* 右侧侧边栏 - 固定宽度200px */
.right-sidebar {
  flex: 0 0 200px;
  position: sticky;
  top: 96px;
  height: fit-content;
  max-height: calc(100vh - 96px);
  overflow: visible;
}

/* 隐藏侧边栏滚动条 */
.sidebar-nav::-webkit-scrollbar {
  display: none;
}

/* 左侧侧边栏 - 与右侧样式一致 */
.left-sidebar {
  flex: 0 0 200px;
  position: sticky;
  top: 8px;
  align-self: flex-start;
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 16px);
  overflow: hidden;
}

/* 主内容区带侧边栏 */
.main-content.with-sidebar {
  flex: 1;
  min-width: 0;
}

/* 侧边栏样式 */
.design-output-sidebar {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  border: 1px solid var(--border-light);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-normal);
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-light));
  color: white;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-blue-light), var(--accent-orange));
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(25, 118, 210, 0.4);
}

.btn-secondary {
  background-color: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
  background-color: var(--accent-blue);
  color: white;
  border-color: var(--accent-blue);
}

.btn-orange {
  background: linear-gradient(135deg, var(--accent-orange), var(--accent-orange-light));
  color: white;
}

.btn-orange:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 152, 0, 0.4);
}

/* Cards */
.card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.card:hover {
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-md);
}

.card-title {
  font-size: 1.25rem;
  font-weight: bold;
  color: var(--accent-blue-light);
  margin-bottom: var(--spacing-sm);
}

.card-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
}

/* 核心功能模块icon亮度调整 */
.card .placeholder-icon img {
  filter: brightness(1.15) contrast(1.05);
  transition: filter 0.3s ease;
}

.card:hover .placeholder-icon img {
  filter: brightness(1.25) contrast(1.1);
}

/* Form Elements */
.form-group {
  margin-bottom: 1.0rem;
}

.form-label {
  display: block;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  background-color: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition-fast);
  text-align: center !important;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-range {
  width: 100%;
  height: 6px;
  background-color: var(--border-light);
  border-radius: var(--radius-sm);
  outline: none;
  -webkit-appearance: none;
}

.form-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background-color: var(--accent-blue);
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition-fast);
}

.form-range::-webkit-slider-thumb:hover {
  background-color: var(--accent-orange);
  transform: scale(1.1);
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
}

/* Flex Layouts */
.flex {
  display: flex;
}

.flex-between {
  justify-content: space-between;
  align-items: center;
}

.flex-center {
  justify-content: center;
  align-items: center;
}

.flex-col {
  flex-direction: column;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

/* Sections */
.section {
  margin-bottom: 1.5rem;
  padding: 0;
}

/* 为所有可滚动的 section 添加 scroll-margin-top，避免被导航栏遮挡 */
.section[id="section-design-input"],
.section[id="section-performance-curves"],
.section[id="section-performance-table"],
.section[id="section-instant-flow"],
.section[id="section-kinematics"],
.section[id="section-mechanics"],
.section[id="section-bearing"],
.section[id="section-torque"],
.section[id="section-bolt"] {
  scroll-margin-top: 80px;
}

.section-title {
  font-size: 2rem;
  font-weight: bold;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  border-left: 4px solid var(--accent-blue);
  padding-left: var(--spacing-sm);
}

/* 结构设计页面子模块标题样式 */
.left-content .section-title {
  color: var(--accent-blue-light);
  font-size: 1.25rem;
  border-left: none;
  padding-left: 0;
  margin-bottom: var(--spacing-sm);
  margin-top: 0;
}

.left-content .section {
  padding: 0;
}

.left-content .card {
  padding-top: var(--spacing-md);
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  padding-left: calc(var(--spacing-sm) + 4px);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.hero-title {
  font-size: 3rem;
  font-weight: bold;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--accent-blue-light), var(--accent-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-slogan {
  font-size: 1.5rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-lg);
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
}

/* Placeholder Elements */
.placeholder-box {
  background-color: var(--bg-input);
  border: 2px dashed var(--primary-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 200px;
}

.placeholder-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
  opacity: 0.5;
}

/* Status Badges */
.badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
}

.badge-info {
  background-color: rgba(33, 150, 243, 0.2);
  color: var(--accent-blue-light);
}

.badge-warning {
  background-color: rgba(34, 197, 94, 0.15);
  color: #16a34a;
}

/* Footer */
.footer {
  background-color: var(--primary-medium);
  border-top: 1px solid var(--primary-light);
  padding: var(--spacing-lg) 0;
  margin-top: var(--spacing-xl);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  text-align: center;
}

.footer-text {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .nav-links {
    gap: var(--spacing-sm);
  }
  
  .nav-links a {
    font-size: 0.9rem;
    padding: var(--spacing-xs);
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-slogan {
    font-size: 1.2rem;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .main-content {
    padding: var(--spacing-md) var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.5rem;
  }
  
  .hero-slogan {
    font-size: 1rem;
  }
  
  .btn {
    width: 100%;
    padding: var(--spacing-sm);
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* 参数设计输出侧边栏导航 */
.design-output-sidebar {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  border: 1px solid var(--border-light);
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  position: sticky;
  top: 20px;
}

.sidebar-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  padding: 10px 8px;
}

.sidebar-title {
  font-size: 1rem;
  font-weight: bold;
  color: var(--text-primary);
  margin-bottom: 8px;
  text-align: left;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--primary-light);
  line-height: 1.2;
}

.sidebar-nav {
  display: flex;
  flex-direction: column !important;
  gap: 6px;
  flex-wrap: wrap;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 6px 10px;
  background-color: transparent;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
  width: 100%;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.2;
}

.nav-item::before,
.nav-item::after {
  display: none !important;
  content: none !important;
}

.nav-item:hover {
  background-color: rgba(37, 99, 235, 0.05);
  border-color: var(--accent-blue);
  transform: translateX(-2px);
}

.nav-item.active {
  background-color: var(--accent-blue);
  border-color: var(--accent-blue);
  color: white;
  font-weight: 600;
}

.nav-item.active:hover {
  background-color: var(--accent-blue-light);
  transform: translateX(0);
}

.nav-icon {
  font-size: 0.9rem;
  flex-shrink: 0;
}

.nav-text {
  flex: 1;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: inline;
}

.nav-text::before,
.nav-text::after {
  display: none !important;
  content: none !important;
}

/* 响应式设计 - 侧边栏在移动端隐藏 */
@media (max-width: 1200px) {
  .right-sidebar {
    display: none;
  }
  
  .left-sidebar {
    display: none;
  }
  
  /* 小屏幕时主布局改为单列 */
  .main-layout-wrapper {
    flex-direction: column;
  }
}

/* 往复泵性能曲线模块样式 */
.tab-btn {
  font-size: 1rem;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-bottom: 3px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
}

.placeholder-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
}

.tab-pane {
  padding: var(--spacing-md) 0;
}

/* 曲线布局样式 */
.curve-layout {
  display: flex !important;
  gap: var(--spacing-lg) !important;
  margin-bottom: var(--spacing-lg) !important;
  align-items: stretch !important;
  width: 100% !important;
}

.curve-layout > .curve-chart,
.curve-layout > .curve-params {
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

.curve-layout > .curve-chart > div,
.curve-layout > .curve-params > .params-container {
  min-height: 500px;
  box-sizing: border-box;
}

.curve-chart {
  display: flex;
  flex-direction: column;
}

.curve-params {
  display: flex;
  flex-direction: column;
}

.params-container {
  background-color: var(--bg-input);
  border: 1px solid var(--primary-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.placeholder-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: var(--bg-input);
  border: 2px dashed var(--primary-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  color: var(--text-muted);
  height: 100%;
  min-height: 400px;
}

/* 自定义计算模块样式 */
.custom-calc {
  transition: all var(--transition-normal);
}

.custom-calc:hover {
  border-color: var(--accent-blue-light);
  background-color: rgba(33, 150, 243, 0.08);
}

.custom-calc-title {
  border-bottom: 1px solid var(--accent-blue);
  padding-bottom: var(--spacing-xs);
  display: inline-block;
}

.result-display {
  background-color: var(--bg-card);
  border: 1px solid var(--accent-blue);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 600;
  text-align: center;
  transition: var(--transition-fast);
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.result-display:hover {
  border-color: var(--accent-blue-light);
  background-color: rgba(33, 150, 243, 0.05);
}

/* 响应式优化 - 性能曲线Tab */
@media (max-width: 1024px) {
  .curve-layout {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .curve-chart,
  .curve-params {
    width: 100% !important;
    flex: none;
  }

  .placeholder-box {
    min-height: 300px;
  }
}

@media (max-width: 768px) {
  .tab-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.95rem;
  }

  .placeholder-icon {
    font-size: 3rem;
  }

  .custom-calc {
    padding: var(--spacing-md);
  }

  .params-container {
    padding: var(--spacing-md);
  }

  .param-display {
    font-size: 1rem;
    padding: var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .tab-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.9rem;
  }

  .placeholder-icon {
    font-size: 2.5rem;
  }

  .placeholder-box {
    padding: var(--spacing-lg);
  }

  .custom-calc {
    padding: var(--spacing-sm);
  }

  .custom-calc-title {
    font-size: 1rem;
  }

  .params-container {
    padding: var(--spacing-sm);
  }

  .param-display {
    font-size: 0.95rem;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

/* ==================== 图片轮播组件 ==================== */
.carousel-container {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.carousel-wrapper {
  position: relative;
  width: 100%;
  height: 450px;
}

.carousel-slides {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-input);
}

.carousel-slide.active {
  opacity: 1;
  z-index: 1;
}

.carousel-slide img {
  max-width: 90%;
  max-height: 380px;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.carousel-caption {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(45, 45, 45, 0.85);
  color: white;
  padding: 8px 24px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
}

/* 轮播按钮 */
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.carousel-btn:hover {
  background: white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.carousel-btn svg {
  color: var(--text-primary);
}

.carousel-prev {
  left: 16px;
}

.carousel-next {
  right: 16px;
}

/* 轮播指示器 */
.carousel-indicators {
  position: absolute;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}

.indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  border: 2px solid rgba(45, 45, 45, 0.3);
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
}

.indicator:hover {
  background: rgba(255, 255, 255, 0.8);
}

.indicator.active {
  background: #2d2d2d;
  border-color: #2d2d2d;
  transform: scale(1.2);
}

/* 响应式 */
@media (max-width: 768px) {
  .carousel-wrapper {
    height: 350px;
  }
  
  .carousel-slide img {
    max-height: 280px;
  }
  
  .carousel-btn {
    width: 36px;
    height: 36px;
  }
  
  .carousel-prev {
    left: 8px;
  }
  
  .carousel-next {
    right: 8px;
  }
}

/* 轴向油槽形状示意图展开/收起箭头旋转 */
details[open] .toggle-icon {
  transform: rotate(180deg);
}

/* 衬套设计参数输入模块 - 统一高度 */
#bushing-material,
#rod-bearing-backing-material,
#rod-bearing-lining-material,
.param-display {
  height: 42px !important;
  box-sizing: border-box !important;
  padding-top: 10px !important;
  padding-bottom: 10px !important;
}