/* ===================================
   移动端响应式样式统一管理
   ================================= */

/* ===== 断点系统定义 ===== */
:root {
  /* 标准断点变量 */
  --breakpoint-xl: 1400px;    /* 超大屏幕 */
  --breakpoint-lg: 1200px;    /* 大屏幕 */
  --breakpoint-md: 1024px;    /* 中等屏幕 */
  --breakpoint-sm: 768px;     /* 平板设备 */
  --breakpoint-xs: 480px;     /* 手机设备 */
  
  /* 响应式导航栏高度 */
  --header-height-desktop: 70px;
  --header-height-tablet: 60px;
  --header-height-mobile: 50px;
}

/* ===== 超大屏幕优化 (1400px+) ===== */
@media (min-width: 1400px) {
  .container {
    max-width: 1320px;
  }
  
  .banner {
    height: 85vh;
  }
}

/* ===== 大屏幕优化 (1200px - 1399px) ===== */
@media (max-width: 1199px) {
  .team-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .container {
    max-width: 1140px;
  }
}

/* ===== 中等屏幕优化 (1024px - 1199px) ===== */
@media (max-width: 1023px) {
  :root {
    --header-height: var(--header-height-tablet);
  }
  
  .container {
    max-width: 960px;
    padding: 0 20px;
  }
  
  /* 导航栏调整 */
  .nav {
    padding: 12px 20px;
  }
  
  .logo {
    font-size: 20px;
  }
}

/* ===== 平板设备优化 (768px - 1023px) ===== */
@media (max-width: 767px) {
  :root {
    --header-height: var(--header-height-tablet);
  }

  /* ===== 全局移动端优化 ===== */
  * {
    -webkit-tap-highlight-color: transparent !important;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
  }

  /* 允许文本选择的元素 */
  p, span, div, h1, h2, h3, h4, h5, h6, 
  .content, .description, .text-selectable {
    -webkit-user-select: text;
    user-select: text;
  }

  /* 恢复导航菜单的交互能力 */
  .nav, .nav-links, .nav-links *, 
  .dropdown, .dropdown *, 
  .dropdown-content, .dropdown-content *,
  .mobile-menu, .mobile-menu *,
  a, button, input, select, textarea {
    -webkit-user-select: auto;
    user-select: auto;
    pointer-events: auto !important;
    touch-action: manipulation;
    -webkit-touch-callout: default;
  }

  body {
    padding-top: var(--header-height) !important;
    overflow-x: hidden;
  }

  .container {
    max-width: 100%;
    padding: 0 15px;
  }

  /* ===== 导航栏移动端 ===== */
  
  .nav-links {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    flex-direction: column;
    padding: 20px;
    gap: 15px;
    z-index: 1100;
    box-shadow: var(--shadow-heavy);
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
    margin: 0;
    justify-content: flex-start;
  }
  
  .nav-links.mobile-active {
    display: flex;
  }
  
  .nav-links li {
    width: 100%;
  }
  
  .nav-links a {
    display: block;
    padding: 12px 15px;
    border-radius: var(--border-radius);
    color: white;
    transform: none;
    text-align: left;
  }
  
  .nav-links a:hover {
    background: rgba(255,255,255,0.1);
    transform: none;
  }
  
  /* ===== 移动端下拉菜单 ===== */
  /* 移动端下拉菜单基础样式 - 提高优先级 */
  @media (max-width: 767px) {
    .nav-links .dropdown .dropdown-content {
      position: static !important;
      background: rgba(255,255,255,0.1) !important;
      box-shadow: none !important;
      display: none !important;
      margin-top: 10px !important;
      border-radius: var(--border-radius) !important;
      opacity: 1 !important;
      transform: translateY(0) !important;
      transition: none !important;
      min-width: auto !important;
      /* 确保下拉菜单容器可交互 */
      pointer-events: auto !important;
      touch-action: manipulation;
      z-index: 999;
      visibility: visible !important;
      width: 100% !important;
    }
    
    /* 移动端激活状态 - 确保最高优先级 */
    .nav-links .dropdown.mobile-active .dropdown-content,
    .nav-links.mobile-active .dropdown.mobile-active .dropdown-content {
      display: block !important;
      visibility: visible !important;
      opacity: 1 !important;
    }
  }
  
  /* 移动端下拉菜单项样式 */
  @media (max-width: 767px) {
    .nav-links .dropdown-content a {
      color: rgba(255,255,255,0.9) !important;
      padding: 10px 15px !important;
      font-size: 14px !important;
      border-bottom: 1px solid rgba(255,255,255,0.1) !important;
      border-radius: 4px !important;
      margin-bottom: 2px !important;
      display: block !important;
      text-decoration: none !important;
      /* 确保下拉菜单项可点击 */
      cursor: pointer;
      -webkit-tap-highlight-color: rgba(255,255,255,0.2);
      touch-action: manipulation;
      pointer-events: auto !important;
    }
  }
  
  /* 移动端下拉箭头和交互效果 */
  @media (max-width: 767px) {
    .nav-links .dropdown > a::after {
      content: ' ▼' !important;
      font-size: 10px !important;
      margin-left: 8px !important;
      transition: transform 0.2s ease;
      display: inline !important;
    }
    
    .nav-links .dropdown.mobile-active > a::after {
      content: ' ▲' !important;
    }

    /* 下拉菜单项悬停效果 */
    .nav-links .dropdown-content a:hover,
    .nav-links .dropdown-content a:active,
    .nav-links .dropdown-content a:focus {
      background: rgba(255,255,255,0.2) !important;
      transform: none !important;
    }
  }

  /* 移动端触摸反馈 */
  .dropdown > a:active,
  .nav-links a:active {
    background: rgba(255,255,255,0.1);
    transform: scale(0.98);
  }

  /* ===== 主要内容区域移动端优化 ===== */
  .banner {
    height: 60vh !important;
    margin-top: var(--header-height) !important;
  }

  .banner-slide img {
    height: 100% !important;
    object-fit: cover;
  }

  .banner-prev, .banner-next {
    padding: 8px 12px !important;
    font-size: 14px !important;
  }

  /* ===== 网格布局移动端优化 ===== */
  .store-images,
  .team-grid,
  .news-grid {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }

  .stats {
    flex-direction: column !important;
    gap: 20px !important;
    margin: 40px auto !important;
    padding: 0 15px !important;
  }

  .stat-item {
    flex: 100% !important;
    padding: 15px !important;
  }

  /* ===== 新闻区域移动端优化 ===== */
  .news {
    margin: 60px auto !important;
    padding: 0 15px !important;
  }
  
  .news-item {
    margin-bottom: 15px !important;
  }
  
  .news-img-wrapper {
    height: 160px !important;
  }
  
  .news-content {
    padding: 20px !important;
  }
  
  .news-title {
    font-size: 16px !important;
    margin-bottom: 12px !important;
  }
  
  .news-excerpt {
    font-size: 13px !important;
    -webkit-line-clamp: 2 !important;
    line-clamp: 2 !important;
    margin-bottom: 16px !important;
  }
  
  .news-category {
    font-size: 10px !important;
    padding: 3px 8px !important;
  }

  /* ===== 表单移动端优化 ===== */
  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 15px 18px !important;
    font-size: 16px !important; /* 防止iOS缩放 */
    border-radius: var(--border-radius);
  }
  
  .submit-btn {
    padding: 16px !important;
    font-size: 16px !important;
    width: 100%;
  }

  /* ===== 联系信息移动端优化 ===== */
  .contact {
    padding: 40px 0 !important;
  }
  
  .contact-container {
    padding: 0 15px !important;
    gap: 20px !important;
    flex-direction: column;
  }
  
  .contact-info {
    padding: 20px !important;
    margin-bottom: 15px !important;
  }
  
  .contact-form-wrapper {
    padding: 25px !important;
  }

  /* ===== 团队区域移动端优化 ===== */
  .team {
    margin: 80px auto !important;
    padding: 0 15px !important;
  }
  
  .team-image img {
    height: 200px !important;
    object-fit: cover;
  }

  /* ===== 页脚移动端优化 ===== */
  .footer-container {
    grid-template-columns: 1fr !important;
    text-align: center;
    padding: 30px 15px;
  }

  .footer-left {
    margin: 10px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .footer-left img {
    max-width: 300px !important;
    height: auto !important;
  }

  .footer-links {
    display: none !important;
  }

  /* ===== 图片优化 ===== */
  .store-image img,
  .team-image img,
  .ad36 img {
    width: 100% !important;
    height: auto !important;
    object-fit: cover;
  }
}

/* ===== 手机设备优化 (480px以下) ===== */
@media (max-width: 479px) {
  :root {
    --header-height: var(--header-height-mobile);
  }

  body {
    padding-top: var(--header-height) !important;
  }

  .container {
    padding: 0 12px;
  }

  .nav {
    padding: 8px 15px;
  }

  .logo {
    font-size: 18px;
  }

  /* ===== 超小屏幕banner优化 ===== */
  .banner {
    height: 50vh !important;
    margin-top: var(--header-height) !important;
  }

  /* ===== 统计数据超小屏优化 ===== */
  .stats {
    margin: 30px auto !important;
  }

  .stat-item {
    padding: 12px !important;
  }

  /* ===== 新闻区域超小屏优化 ===== */
  .news {
    margin: 40px auto !important;
  }

  .news-grid {
    gap: 15px !important;
  }

  .news-img-wrapper {
    height: 140px !important;
  }

  .news-content {
    padding: 16px !important;
  }

  .news-title {
    font-size: 15px !important;
    line-height: 1.3 !important;
  }

  .news-excerpt {
    font-size: 12px !important;
    line-height: 1.4 !important;
  }

  /* ===== 表单超小屏优化 ===== */
  .contact-form-wrapper {
    padding: 20px !important;
  }

  .form-group input,
  .form-group textarea {
    padding: 12px 15px !important;
  }

  /* ===== 团队区域超小屏优化 ===== */
  .team-grid {
    gap: 15px !important;
  }

  .team-image img {
    height: 180px !important;
  }

  /* ===== 页面特定优化 ===== */
  .investment-page .investment-grid {
    grid-template-columns: 1fr !important;
    gap: 15px !important;
  }

  .contact-page .contact-grid {
    grid-template-columns: 1fr !important;
  }

  .news-page .news-list {
    grid-template-columns: 1fr !important;
  }
}

/* ===== 特殊移动端优化 ===== */

/* 横屏手机优化 */
@media (max-height: 500px) and (orientation: landscape) {
  .banner {
    height: 80vh !important;
  }

  .nav-links {
    max-height: 70vh !important;
  }
}

/* 高分辨率显示屏优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .logo img,
  .team-image img,
  .store-image img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
  :root {
    --text-color: #f0f0f0;
    --bg-color: #1a1a1a;
  }
}

/* ===== 确保PC端隐藏汉堡菜单 ===== */
@media (min-width: 769px) {
  .mobile-menu,
  #mobileMenuBtn {
    display: none !important;
  }
}

/* ===== 移动端全局布局修复 ===== */
@media (max-width: 768px) {
  /* 防止页面内容超出屏幕宽度 */
  body {
    overflow-x: hidden !important;
    max-width: 100vw !important;
  }
  
  /* 确保所有容器不超出屏幕 */
  .investment-container,
  .container,
  .nav {
    max-width: 100vw !important;
    overflow-x: hidden !important;
  }
  
  /* 移动端导航容器布局 */
  .nav {
    padding: 12px 20px !important;
    justify-content: space-between !important;
    align-items: center !important;
    width: 100vw !important;
    box-sizing: border-box !important;
  }
  
  /* 隐藏移动端的导航链接 */
  .nav-links {
    display: none !important;
  }
  
  /* 隐藏PC端电话文字 */
  .phone-text {
    display: none;
  }
  
  /* 固定按钮现在由 fixed-buttons.css 统一管理响应式样式 */
  
  .bbk-chat-container {
    right: 15px !important;
    bottom: 105px !important; /* 与新调整的按钮位置匹配 */
    width: calc(100vw - 30px) !important;
    max-width: 350px !important;
    height: 400px !important;
  }

  /* 汉堡菜单激活时的导航显示 */
  .nav .nav-links.mobile-active {
    display: flex !important;
    position: fixed !important;
    top: var(--header-height) !important;
    left: 0 !important;
    width: 100% !important;
    background: rgba(0, 0, 0, 0.95) !important;
    backdrop-filter: blur(10px) !important;
    -webkit-backdrop-filter: blur(10px) !important;
    flex-direction: column !important;
    padding: 20px 0 !important;
    z-index: 1000 !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3) !important;
  }
  
  /* 移动端导航链接基础样式 */
  .nav .nav-links > a,
  .nav .nav-links > .dropdown > a {
    color: white !important;
    padding: 15px 30px !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
    display: block !important;
    text-decoration: none !important;
    transition: background 0.2s ease !important;
  }
  
  /* 移动端导航链接悬停效果 */
  .nav .nav-links > a:hover,
  .nav .nav-links > .dropdown > a:hover {
    background: rgba(235, 102, 48, 0.2) !important;
  }

  /* 精美下拉菜单容器 - 修正选择器 */
  .nav .nav-links .dropdown.mobile-active .dropdown-content,
  .dropdown.mobile-active .dropdown-content,
  .nav-links.mobile-active .dropdown.mobile-active .dropdown-content {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: static !important;
    /* 精美的半透明白色背景 */
    background: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(12px) !important;
    -webkit-backdrop-filter: blur(12px) !important;
    margin-top: 12px !important;
    border-radius: 12px !important;
    max-height: none !important;
    overflow: visible !important;
    width: 100% !important;
    margin-left: 0 !important;
    z-index: 999 !important;
    /* 精美的边框和阴影 - 匹配整站橙色主题 */
    border: 2px solid rgba(235, 102, 48, 0.2) !important;
    box-shadow: 0 8px 25px rgba(235, 102, 48, 0.15), 0 2px 10px rgba(0, 0, 0, 0.1) !important;
    padding: 12px 0 !important;
    /* 平滑展开动画 */
    animation: dropdownSlideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    transform-origin: top !important;
  }

  /* 下拉菜单平滑展开动画 */
  @keyframes dropdownSlideIn {
    0% {
      opacity: 0;
      transform: translateY(-8px) scaleY(0.95);
    }
    100% {
      opacity: 1;
      transform: translateY(0) scaleY(1);
    }
  }

  /* 精美的下拉菜单项显示效果 - 修正选择器 */
  .nav .nav-links .dropdown.mobile-active .dropdown-content a,
  .nav-links.mobile-active .dropdown.mobile-active .dropdown-content a,
  .dropdown.mobile-active .dropdown-content a {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    /* 清晰美观的文字样式 */
    color: #2c3e50 !important;
    background-color: transparent !important;
    padding: 16px 24px !important;
    text-decoration: none !important;
    border-bottom: 1px solid rgba(235, 102, 48, 0.1) !important;
    margin: 0 8px !important;
    width: calc(100% - 16px) !important;
    box-sizing: border-box !important;
    border-radius: 8px !important;
    /* 增强交互性 */
    pointer-events: auto !important;
    cursor: pointer !important;
    -webkit-tap-highlight-color: rgba(235, 102, 48, 0.1) !important;
    /* 平滑过渡效果 */
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
    font-size: 15px !important;
    font-weight: 500 !important;
    line-height: 1.5 !important;
    /* 确保文字完整显示 */
    white-space: normal !important;
    word-wrap: break-word !important;
    overflow: visible !important;
    /* 添加图标间距 */
    position: relative !important;
    padding-left: 50px !important;
    min-height: 24px !important;
  }

  /* 为下拉菜单项添加精美图标 - 修正选择器 */
  .nav .nav-links .dropdown.mobile-active .dropdown-content a::before,
  .nav-links.mobile-active .dropdown.mobile-active .dropdown-content a::before {
    content: "➤" !important;
    position: absolute !important;
    left: 24px !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    font-size: 14px !important;
    color: var(--primary-color) !important;
    opacity: 0.8 !important;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
  }

  /* 整站风格匹配的子项目交互效果 - 修正选择器 */
  .nav .nav-links .dropdown.mobile-active .dropdown-content a:hover,
  .nav .nav-links .dropdown.mobile-active .dropdown-content a:focus,
  .nav-links.mobile-active .dropdown.mobile-active .dropdown-content a:hover,
  .nav-links.mobile-active .dropdown.mobile-active .dropdown-content a:focus,
  .dropdown.mobile-active .dropdown-content a:hover,
  .dropdown.mobile-active .dropdown-content a:focus {
    background: linear-gradient(135deg, rgba(235, 102, 48, 0.12), rgba(235, 102, 48, 0.08)) !important;
    color: var(--primary-dark) !important;
    transform: translateX(4px) scale(1.02) !important;
    border-radius: 8px !important;
    box-shadow: 0 4px 12px rgba(235, 102, 48, 0.2) !important;
    border-bottom-color: rgba(235, 102, 48, 0.3) !important;
  }

  /* 子项目悬停时的图标动画 - 修正选择器 */
  .nav .nav-links .dropdown.mobile-active .dropdown-content a:hover::before,
  .nav-links.mobile-active .dropdown.mobile-active .dropdown-content a:hover::before {
    transform: translateY(-50%) translateX(3px) scale(1.1) !important;
    color: var(--primary-dark) !important;
    opacity: 1 !important;
  }

  /* 子项目激活状态 - 修正选择器 */
  .nav .nav-links .dropdown.mobile-active .dropdown-content a:active,
  .nav-links.mobile-active .dropdown.mobile-active .dropdown-content a:active,
  .dropdown.mobile-active .dropdown-content a:active {
    background: linear-gradient(135deg, rgba(235, 102, 48, 0.2), rgba(235, 102, 48, 0.15)) !important;
    color: #B8441A !important;
    transform: translateX(2px) scale(0.98) !important;
    box-shadow: 0 2px 8px rgba(235, 102, 48, 0.3), inset 0 1px 3px rgba(235, 102, 48, 0.2) !important;
  }

  /* 最后一个子项目去除边框 - 修正选择器 */
  .nav .nav-links .dropdown.mobile-active .dropdown-content a:last-child,
  .nav-links.mobile-active .dropdown.mobile-active .dropdown-content a:last-child {
    border-bottom: none !important;
    margin-bottom: 0 !important;
  }
}



/* ===== 移动端调试辅助 (开发环境) ===== */
@media (max-width: 768px) {
  /* 开发时可取消注释查看布局边界 */
  /* 
  * {
    outline: 1px solid rgba(255, 0, 0, 0.3) !important;
  }
  */
}