/* 移动端适配专用CSS */
/* 该文件只包含移动端特定的样式，不会影响PC端逻辑 */

/* 优化视口和根字体大小 */
@media (max-width: 767.98px) {
  html {
    font-size: 15px;
  }
}

/* 通用移动端调整 */
@media (max-width: 767.98px) {
  /* 增加触摸区域大小 */
  button, 
  .btn, 
  .nav-link, 
  .dropdown-item {
    padding: 0.75rem 1rem !important;
    min-height: 44px;
  }
  
  /* 优化轮播和滑块控件 */
  .swiper-button-prev, 
  .swiper-button-next,
  .platform-swiper-button-prev,
  .platform-swiper-button-next,
  .institutions-prev,
  .institutions-next,
  .version-swiper-button-prev,
  .version-swiper-button-next {
    width: 40px !important;
    height: 40px !important;
  }
  
  /* 增强表单元素的可用性 */
  input, select, textarea {
    font-size: 16px !important; /* 防止iOS自动缩放 */
    padding: 12px !important;
  }
  
  /* 调整标题字体大小 */
  h1, .h1 {
    font-size: 2.25rem !important;
  }
  
  h2, .h2 {
    font-size: 1.75rem !important;
  }
  
  h3, .h3 {
    font-size: 1.5rem !important;
  }
  
  /* 优化行距 */
  p, li {
    line-height: 1.6 !important;
  }
  
  /* 减少动画复杂度以提高性能 */
  [data-aos] {
    transition-duration: 500ms !important;
  }
}

/* 导航栏移动端优化 */
@media (max-width: 991.98px) {
  .navbar {
    padding: 10px 0 !important;
  }
  
  .navbar-toggler {
    padding: 10px !important;
    margin-right: 5px;
  }
  
  .navbar-collapse {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-top: 10px;
    padding: 10px 0;
  }
  
  body.dark-mode .navbar-collapse {
    background-color: var(--dark-bg);
  }
  
  .navbar-nav {
    padding: 10px;
  }
  
  .navbar-nav .nav-item {
    margin: 5px 0;
  }
  
  .nav-link {
    border-radius: 6px;
  }
  
  .nav-item:hover {
    transform: none !important; /* 覆盖原有的悬停效果 */
  }
  
  .logo-text {
    font-size: 1.2rem !important;
  }
  
  /* 语言下拉菜单优化 */
  .dropdown-menu {
    width: 100%;
    margin-top: 0;
    box-shadow: none;
    border-left: 3px solid var(--primary-color);
  }
  
  /* 优化下拉菜单项 */
  .dropdown-item {
    padding: 12px 20px !important;
  }
}

/* 主横幅(Hero Section)优化 */
@media (max-width: 767.98px) {
  .hero-section,
  .slide-content {
    height: auto !important;
    min-height: 450px !important;
  }
  
  .hero-section .container {
    padding-top: 50px;
    padding-bottom: 50px;
  }
  
  .slide-content .display-4 {
    font-size: 2rem !important;
    margin-bottom: 1rem;
  }
  
  .slide-content .lead {
    font-size: 1.1rem !important;
    margin-bottom: 1.5rem;
  }
  
  .slide-content .btn-lg {
    padding: 0.75rem 1.5rem !important;
    font-size: 1rem !important;
  }
}

/* 平台展示部分优化 */
@media (max-width: 767.98px) {
  .platform-section {
    padding: 2.5rem 0 !important;
  }
  
  .platform-item {
    padding: 15px !important;
  }
  
  .platform-item i {
    font-size: 2.2rem !important;
    margin-bottom: 10px !important;
  }
  
  .platform-item p {
    font-size: 0.9rem !important;
    margin-bottom: 0 !important;
  }
  
  .platform-swiper-nav {
    width: 100%;
    justify-content: space-between;
    padding: 0 5px;
  }
  
  .platform-slider-container {
    padding: 0 30px !important;
  }
}

/* 功能特点卡片优化 */
@media (max-width: 767.98px) {
  .features-section {
    padding: 2.5rem 0 !important;
  }
  
  .feature-card {
    margin-bottom: 20px !important;
    padding: 20px !important;
  }
  
  .feature-icon {
    margin-bottom: 15px !important;
  }
  
  .feature-card h3 {
    font-size: 1.25rem !important;
    margin-bottom: 10px !important;
  }
  
  .feature-card p {
    font-size: 0.95rem !important;
  }
}

/* 下载部分优化 */
@media (max-width: 767.98px) {
  .download-section {
    padding: 2.5rem 0 !important;
  }
  
  .download-card {
    padding: 25px 15px !important;
  }
  
  .download-icon i {
    font-size: 2.5rem !important;
  }
  
  .download-card h3 {
    font-size: 1.25rem !important;
    margin: 10px 0 !important;
  }
  
  .download-card p {
    font-size: 0.9rem !important;
    margin-bottom: 15px !important;
  }
  
  .download-note {
    margin-top: 2rem !important;
    padding-top: 1.5rem !important;
  }
  
  .download-note h4 {
    font-size: 1.1rem !important;
  }
  
  .download-note p {
    font-size: 0.9rem !important;
  }
}

/* 使用教程部分优化 */
@media (max-width: 767.98px) {
  .tutorial-section {
    padding: 2.5rem 0 !important;
  }
  
  .tutorial-tabs {
    margin-top: 2rem !important;
  }
  
  .tutorial-institutions-slider {
    padding: 0 30px !important;
  }
  
  .institution-tab {
    padding: 8px 10px !important;
    font-size: 0.85rem !important;
  }
  
  .institution-content-container {
    padding: 20px 15px !important;
    margin-top: 1.5rem !important;
  }
  
  .tutorial-step {
    padding-left: 35px !important;
    margin-bottom: 30px !important;
  }
  
  .step-number {
    width: 30px !important;
    height: 30px !important;
    font-size: 1rem !important;
    line-height: 30px !important;
    left: 0 !important;
  }
  
  .step-content h4 {
    font-size: 1.1rem !important;
    margin-bottom: 10px !important;
  }
  
  .step-content p {
    font-size: 0.9rem !important;
  }
  
  .step-image {
    margin: 15px 0 !important;
  }
}

/* FAQ部分优化 */
@media (max-width: 767.98px) {
  .faq-section {
    padding: 2.5rem 0 !important;
  }
  
  .accordion-item {
    margin-bottom: 15px !important;
  }
  
  .accordion-header button {
    padding: 15px !important;
    font-size: 1rem !important;
  }
  
  .accordion-body {
    padding: 15px !important;
    font-size: 0.9rem !important;
  }
}

/* 版本历史部分优化 */
@media (max-width: 767.98px) {
  .history-section {
    padding: 2.5rem 0 !important;
  }
  
  .version-card {
    min-height: auto !important;
    padding: 20px 15px !important;
  }
  
  .version-header h3 {
    font-size: 1.25rem !important;
  }
  
  .version-date {
    font-size: 0.85rem !important;
  }
  
  .version-features li {
    font-size: 0.9rem !important;
    margin-bottom: 10px !important;
  }
  
  .version-slider-container {
    padding: 0 30px !important;
  }
  
  .version-swiper-button-prev,
  .version-swiper-button-next {
    width: 35px !important;
    height: 35px !important;
  }
}

/* 联系我们部分优化 */
@media (max-width: 767.98px) {
  .contact-section {
    padding: 2.5rem 0 !important;
  }
  
  .contact-method-card {
    padding: 20px 15px !important;
    margin-bottom: 20px !important;
  }
  
  .contact-method-icon {
    font-size: 1.8rem !important;
    margin-bottom: 15px !important;
  }
  
  .contact-method-card h4 {
    font-size: 1.2rem !important;
    margin-bottom: 10px !important;
  }
  
  .contact-method-card p {
    font-size: 0.9rem !important;
  }
  
  .social-icon-large {
    width: 45px !important;
    height: 45px !important;
    font-size: 1.4rem !important;
    margin: 0 5px !important;
  }
  
  .qrcode {
    max-width: 120px !important;
  }
}

/* 使用条款部分优化 */
@media (max-width: 767.98px) {
  .terms-section {
    padding: 2.5rem 0 !important;
  }
  
  .terms-card {
    padding: 20px 15px !important;
    margin-bottom: 20px !important;
  }
  
  .terms-header h3 {
    font-size: 1.2rem !important;
  }
  
  .terms-content {
    font-size: 0.9rem !important;
  }
}

/* 页脚优化 */
@media (max-width: 767.98px) {
  .footer-main {
    padding: 40px 0 30px !important;
    text-align: center;
  }
  
  .footer-brand h3 {
    font-size: 1.5rem !important;
  }
  
  .footer-brand p {
    font-size: 0.9rem !important;
    margin-bottom: 20px !important;
  }
  
  .footer-links,
  .footer-newsletter {
    margin-top: 30px !important;
  }
  
  .footer-links h4,
  .footer-newsletter h4 {
    font-size: 1.2rem !important;
    margin-bottom: 15px !important;
  }
  
  .footer-links ul li {
    margin-bottom: 10px !important;
  }
  
  .footer-links ul li a {
    font-size: 0.95rem !important;
  }
  
  .newsletter-form .input-group {
    width: 100% !important;
  }
  
  .footer-bottom {
    padding: 20px 0 !important;
    text-align: center;
  }
  
  .copyright p {
    font-size: 0.85rem !important;
    margin-bottom: 10px !important;
  }
  
  .footer-bottom-links a {
    font-size: 0.85rem !important;
    margin: 0 10px !important;
  }
}

/* 返回顶部按钮优化 */
@media (max-width: 767.98px) {
  .back-to-top {
    width: 40px !important;
    height: 40px !important;
    right: 15px !important;
    bottom: 15px !important;
  }
  
  .back-to-top i {
    font-size: 1rem !important;
  }
}

/* 修复导航栏按钮可访问性问题 */
.navbar-toggler:focus {
  outline: 2px solid var(--primary-color) !important;
  box-shadow: 0 0 0 0.25rem rgba(26, 115, 232, 0.25) !important;
}