/* ========================================
   夏企宽带官网 - 响应式样式
   ======================================== */

/* ========================================
   1. 平板设备 (max-width: 1200px)
   ======================================== */
@media (max-width: 1200px) {
  /* 导航栏适配 - 减小字体和间距 */
  .navbar,
  .nav {
    max-width: 100%;
    padding: 10px 20px;
  }

  .logo {
    font-size: 20px;
  }

  .logo-icon {
    width: 34px;
    height: 34px;
    font-size: 14px;
  }
  
  .nav-menu {
    gap: 2px;
    padding: 0 12px;
  }
  
  .nav-link,
  .nav-menu > li > a {
    font-size: 13px;
    padding: 8px 10px;
  }

  .nav-actions {
    gap: 8px;
  }

  .nav-actions .btn {
    font-size: 12px !important;
    padding: 6px 14px !important;
  }

  /* 隐藏下拉箭头以节省空间 */
  .dropdown-toggle::after {
    display: none;
  }
}

/* ========================================
   1.2 平板设备竖屏 (max-width: 1024px)
   ======================================== */
@media (max-width: 1024px) {
  .container {
    max-width: 100%;
    padding: 0 var(--spacing-lg);
  }
  
  .hero-title {
    font-size: 40px;
  }
  
  .services-grid,
  .pricing-grid,
  .pricing-grid-3,
  .cases-grid,
  #casesContainer.cases-grid,
  .news-grid,
  .home-news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-card.featured,
  .pricing-card.popular {
    transform: scale(1);
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 解决方案页面 */
  .solution-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .solution-reverse .solution-grid {
    direction: ltr; /* 移动端取消左右交替布局 */
  }

  .industries-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .honors-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .partners-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .culture-grid {
    grid-template-columns: 1fr;
  }

  .steps-grid.steps-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .speed-capabilities {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonials-carousel {
    grid-template-columns: 1fr;
  }

  .featured-article {
    grid-template-columns: 1fr;
  }

  .news-layout {
    grid-template-columns: 1fr;
  }

  .news-sidebar {
    position: static;
  }

  .newsletter-box {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-lg);
  }

  .newsletter-form {
    width: 100%;
    justify-content: center;
  }

  .newsletter-form input {
    flex: 1;
    max-width: 400px;
  }
}

/* ========================================
   2. 移动设备 (max-width: 768px)
   ======================================== */
@media (max-width: 768px) {
  /* 导航栏 - 移动端优化 */
  .header {
    position: relative; /* 改为相对定位，避免fixed问题 */
  }

  .navbar,
  .nav {
    padding: 12px 16px;
    flex-wrap: wrap;
  }

  .logo {
    font-size: 18px;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 13px;
  }
  
  /* 隐藏桌面端导航菜单 */
  .nav-menu {
    display: none !important; /* 默认隐藏 */
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transform: translateX(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    overflow-y: auto;
    gap: 0;
  }
  
  /* 显示移动端菜单时 */
  .nav-menu.active,
  .nav-menu.mobile-open {
    display: flex !important;
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-link,
  .nav-menu > li > a {
    font-size: 16px; /* 移动端字体稍大便于点击 */
    padding: 14px 0;
    border-bottom: 1px solid var(--gray-100);
    text-align: left;
  }

  .nav-link:hover,
  .nav-menu > li > a:hover {
    background: transparent;
  }

  /* 下拉菜单在移动端改为展开样式 */
  .dropdown-menu {
    position: static;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    padding-left: 20px;
    display: none;
  }

  .dropdown.active .dropdown-menu,
  .dropdown.mobile-open .dropdown-menu {
    display: block;
  }
  
  .nav-actions {
    display: none !important; /* 隐藏操作按钮，移到菜单内 */
  }
  
  /* 移动端菜单按钮显示并美化 */
  .mobile-menu-toggle {
    display: flex;
    order: -1; /* 移到最右边 */
    margin-left: auto;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
  }

  .mobile-menu-toggle:hover {
    background: var(--gray-100);
  }
  
  /* 汉堡菜单动画 - 打开状态 */
  .mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
  
  /* Hero区域 */
  .hero {
    min-height: auto;
    padding: 100px 0 var(--spacing-3xl); /* 减少顶部padding */
  }

  .hero-smaller {
    min-height: auto;
    padding: 80px 0 var(--spacing-2xl);
  }
  
  .hero-title {
    font-size: 32px;
  }

  .hero h1 {
    font-size: 28px;
  }
  
  .hero-subtitle {
    font-size: 16px;
  }
  
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  /* Trust badges 响应式 */
  .trust-badges {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .trust-badges span {
    text-align: center;
  }
  
  .hero-stats,
  .stats-grid,
  .stats-grid-4 {
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(2, 1fr);
    display: grid !important;
  }
  
  .stat-item,
  .stat-box {
    text-align: center;
  }
  
  .stat-number {
    font-size: 28px;
  }

  .inline-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }

  /* 网格布局 - 全部改为单列 */
  .services-grid,
  .pricing-grid,
  .pricing-grid-3,
  .cases-grid,
  #casesContainer.cases-grid,
  .news-grid,
  .home-news-grid,
  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  /* 特性卡片网格 */
  .features-grid {
    grid-template-columns: 1fr;
  }

  /* 解决方案页面 */
  .solution-section {
    padding: var(--spacing-3xl) 0;
  }

  .solution-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .solution-reverse .solution-grid {
    direction: ltr; /* 移动端取消左右交替 */
  }

  .image-placeholder {
    height: 220px;
  }

  .image-placeholder.large {
    height: 280px;
  }

  .solution-content h3 {
    font-size: 22px;
  }

  .solution-stats {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .solution-action {
    flex-direction: column;
  }

  .solution-action .btn {
    width: 100%;
  }

  .industries-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .custom-solution-cta h2 {
    font-size: 24px;
  }

  /* 案例页面 */
  .filter-tabs {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .filter-tab {
    font-size: 13px;
    padding: 6px 14px;
  }

  .case-card {
    display: block;
  }

  .case-image .image-placeholder {
    height: 200px;
  }

  .case-highlights {
    padding: var(--spacing-md);
  }

  .highlight-item {
    flex-direction: column;
    gap: 4px;
  }

  /* 新闻页面 */
  .featured-article {
    grid-template-columns: 1fr;
  }

  .featured-image .image-placeholder {
    height: 200px;
  }

  .article-title-large {
    font-size: 22px;
  }

  .news-card {
    grid-template-columns: 1fr;
  }

  .news-image .image-placeholder {
    height: 160px;
  }

  .tags-cloud {
    gap: 6px;
  }

  .sidebar-widget {
    margin-bottom: var(--spacing-md);
  }

  /* 关于我们页面 */
  .about-intro {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .intro-content .lead {
    font-size: 16px;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    padding-left: 60px;
  }

  .timeline-dot {
    left: 10px;
    width: 20px;
    height: 20px;
  }

  .culture-card {
    padding: var(--spacing-xl);
  }

  .team-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .honors-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .partners-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .join-us-cta {
    padding: var(--spacing-xl);
  }

  /* 价格方案页面 */
  .pricing-card.popular {
    transform: scale(1);
    border-width: 2px;
  }

  .popular-badge {
    position: static;
    transform: none;
    display: inline-block;
    margin-bottom: var(--spacing-md);
  }

  .promo-banner {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-lg);
  }

  .speed-comparison {
    overflow-x: auto;
  }

  .speed-capabilities {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .cap-item {
    font-size: 12px;
    padding: 4px 8px;
  }

  .steps-grid.steps-4 {
    grid-template-columns: 1fr;
  }

  .faq-container {
    max-width: 100%;
  }

  .testimonials-carousel {
    grid-template-columns: 1fr;
  }

  .testimonial-card {
    padding: var(--spacing-lg);
  }

  /* Section标题 */
  .section-title {
    font-size: 26px;
  }

  .section-header h2 {
    font-size: 24px;
  }
  
  .section-subtitle {
    font-size: 15px;
  }
  
  /* 卡片 */
  .service-card,
  .pricing-card,
  .feature-card,
  .case-card,
  .news-card {
    padding: var(--spacing-lg);
  }

  .feature-card.featured {
    transform: scale(1);
  }

  .feature-list {
    font-size: 13px;
  }
  
  /* 表单 */
  .form-row {
    flex-direction: column;
  }

  /* CTA区域 */
  .cta-content h2 {
    font-size: 26px;
  }

  .cta-buttons {
    flex-direction: column;
    width: 100%;
  }

  .cta-buttons .btn {
    width: 100%;
  }

  /* Newsletter */
  .newsletter-box {
    flex-direction: column;
    text-align: center;
  }

  .newsletter-form {
    flex-direction: column;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
  }

  .newsletter-form input {
    width: 100% !important;
  }

  .newsletter-form .btn {
    width: 100%;
  }
  
  /* 页脚 */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  /* 分页 */
  .pagination {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .page-numbers {
    order: -1;
    width: 100%;
    justify-content: center;
    margin-bottom: var(--spacing-md);
  }

  /* 首页新闻网格 */
  .home-news-grid {
    grid-template-columns: 1fr;
  }

  .home-news-grid .news-image {
    height: 160px;
  }
}

/* ========================================
   3. 小屏手机 (max-width: 480px)
   ======================================== */
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero-title {
    font-size: 28px;
  }
  
  .section-title {
    font-size: 24px;
  }
  
  .stat-number {
    font-size: 28px;
  }
  
  .btn-large {
    padding: 12px 24px;
    font-size: 16px;
  }
}

/* ========================================
   4. 打印样式
   ======================================== */
@media print {
  .header,
  .footer,
  .btn,
  .mobile-menu-toggle {
    display: none !important;
  }
  
  .hero {
    min-height: auto;
    padding: var(--spacing-xl) 0;
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.5;
  }
}

/* ========================================
   5. 高分辨率屏幕
   ======================================== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  /* 高清图片适配 */
  img {
    image-rendering: -webkit-optimize-contrast;
  }
}

/* ========================================
   6. 深色模式 (可选)
   ======================================== */
@media (prefers-color-scheme: dark) {
  /* 如需支持深色模式,可在此添加样式 */
}

/* ========================================
   7. 动画减弱 (无障碍)
   ======================================== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}