/* 
 * Responsive Layout Fix - CosmosCloud.AI
 * 优化大屏幕显示效果,不影响移动端布局
 * Created: 2025-11-13
 */

/* ==========================================
   1. 大屏幕容器宽度优化
   ========================================== */

/* 1920px 及以上屏幕 - 容器宽度扩展到 1600px */
@media (min-width: 1920px) {
  .container,
  .container-lg,
  .container-md,
  .container-sm,
  .container-xl,
  .container-xxl {
    max-width: 1600px;
  }
}

/* 2K 屏幕 (2560px) 及以上 - 容器宽度扩展到 1800px */
@media (min-width: 2560px) {
  .container,
  .container-lg,
  .container-md,
  .container-sm,
  .container-xl,
  .container-xxl {
    max-width: 1800px;
  }
}

/* 4K 屏幕 (3840px) 及以上 - 容器宽度扩展到 2400px */
@media (min-width: 3840px) {
  .container,
  .container-lg,
  .container-md,
  .container-sm,
  .container-xl,
  .container-xxl {
    max-width: 2400px;
  }
}


/* ==========================================
   2. Logo 定位修复
   ========================================== */

/* 修复 Logo 的负边距问题 - 使用更高优先级的选择器 */
.lrn-navbar .lrn-logo {
  margin-left: 0 !important;
  padding-left: 15px !important;
}

/* 确保 Logo 在所有屏幕上都在左上角 */
.lrn-logo {
  position: relative !important;
  width: auto !important;
  font-size: 0;
  display: flex !important;
  align-items: center !important;
  margin-left: 0 !important;
}

.lrn-logo a {
  display: flex;
  align-items: center;
  text-decoration: none;
}


/* ==========================================
   3. 导航栏布局优化 - 防止重叠
   ========================================== */

/* 基础导航栏布局 - 菜单移到最右侧 */
@media (min-width: 992px) {
  .lrn-navbar {
    padding: 15px 30px;
    position: relative;
    z-index: 100;
  }
  
  .lrn-navbar .container {
    max-width: 100% !important;
    padding-left: 30px;
    padding-right: 30px;
  }
  
  .lrn-navbar .row {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    width: 100% !important;
    flex-wrap: nowrap !important;
  }
  
  /* Logo 区域 - 固定在最左侧 */
  .lrn-navbar .col-md-3 {
    flex: 0 0 auto !important;
    max-width: 250px !important;
    width: auto !important;
    position: relative;
    z-index: 3;
    order: 1 !important;
  }
  
  /* 菜单区域 - 移到最右侧 */
  .lrn-navbar .col-md-8 {
    flex: 1 1 auto !important;
    display: flex !important;
    justify-content: flex-end !important; /* 靠右对齐 */
    text-align: right !important;
    padding: 0 20px !important;
    margin-left: auto !important;
    position: relative;
    z-index: 2;
    order: 2 !important;
  }
  
  /* 菜单按钮区域 - 隐藏在桌面端 */
  .lrn-navbar .col-md-1 {
    flex: 0 0 auto !important;
    width: auto !important;
    position: relative;
    z-index: 3;
    order: 3 !important;
  }
  
  /* 确保菜单容器靠右 */
  .lrn-main-menu {
    max-width: 100%;
  }
  
  .lrn-main-menu > ul {
    display: flex !important;
    flex-wrap: nowrap !important;
    justify-content: flex-end !important;
  }
}

/* 超大屏幕 - 保持菜单靠右 */
@media (min-width: 1600px) {
  .lrn-navbar .col-md-3 {
    max-width: 280px !important;
  }
}

/* 中等屏幕优化 (1200px - 1400px) */
@media (min-width: 1200px) and (max-width: 1400px) {
  .lrn-navbar .col-md-3 {
    max-width: 220px !important;
  }
  
  /* 减小菜单项间距 */
  .lrn-main-menu > ul > li {
    margin-left: 25px !important;
  }
  
  .lrn-main-menu > ul > li:first-child {
    margin-left: 0 !important;
  }
}

/* 小屏幕优化 (992px - 1200px) */
@media (min-width: 992px) and (max-width: 1200px) {
  .lrn-navbar {
    padding: 15px 20px;
  }
  
  .lrn-navbar .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  
  .lrn-navbar .col-md-3 {
    max-width: 180px !important;
  }
  
  /* 进一步减小菜单项间距 */
  .lrn-main-menu > ul > li {
    margin-left: 18px !important;
  }
  
  .lrn-main-menu > ul > li:first-child {
    margin-left: 0 !important;
  }
  
  /* 减小字体以适应更小空间 */
  .lrn-main-menu > ul > li > a {
    font-size: 14px;
    padding: 8px 0;
  }
}


/* 中等屏幕优化 (992px - 1400px) */
@media (min-width: 992px) and (max-width: 1400px) {
  .lrn-navbar .col-md-3 {
    min-width: 160px;
  }
  
  /* 减小菜单项间距 */
  .lrn-main-menu > ul > li {
    margin-left: 20px;
  }
  
  .lrn-main-menu > ul > li:first-child {
    margin-left: 0;
  }
}

/* 小屏幕时防止重叠 */
@media (min-width: 992px) and (max-width: 1200px) {
  .lrn-navbar {
    padding: 15px 20px;
  }
  
  .lrn-navbar .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  
  .lrn-navbar .col-md-3 {
    min-width: 140px;
  }
  
  /* 进一步减小菜单项间距 */
  .lrn-main-menu > ul > li {
    margin-left: 15px;
  }
  
  /* 减小字体 */
  .lrn-main-menu > ul > li > a {
    font-size: 14px;
  }
}

/* 超大屏幕优化 */
@media (min-width: 1920px) {
  .lrn-navbar {
    padding: 15px 50px;
  }
  
  .lrn-navbar .container {
    padding-left: 50px;
    padding-right: 50px;
  }
  
  /* 增加菜单项间距 */
  .lrn-main-menu > ul > li {
    margin-left: 35px;
  }
  
  .lrn-main-menu > ul > li:first-child {
    margin-left: 0;
  }
}

/* 2K 及以上屏幕 */
@media (min-width: 2560px) {
  .lrn-navbar {
    padding: 20px 80px;
  }
  
  .lrn-navbar .container {
    padding-left: 80px;
    padding-right: 80px;
  }
  
  /* 进一步增加菜单项间距 */
  .lrn-main-menu > ul > li {
    margin-left: 45px;
  }
}


/* ==========================================
   4. 内容区域优化
   ========================================== */

/* 确保内容区域在大屏幕上有合适的间距 */
@media (min-width: 1920px) {
  .lrn-section {
    padding-left: 50px;
    padding-right: 50px;
  }
}

@media (min-width: 2560px) {
  .lrn-section {
    padding-left: 80px;
    padding-right: 80px;
  }
}


/* ==========================================
   5. 移动端保护 - 确保不影响小屏幕
   ========================================== */

/* 小屏幕(平板及以下)保持原有布局 */
@media (max-width: 991px) {
  .lrn-navbar {
    padding: 15px 14px !important;
  }
  
  .lrn-navbar .container {
    padding-left: 15px !important;
    padding-right: 15px !important;
  }
  
  .lrn-logo {
    margin-left: 0 !important;
    padding-left: 0 !important;
  }
}

/* 手机屏幕特别处理 */
@media (max-width: 767px) {
  .container {
    max-width: 100% !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
  }
}


/* ==========================================
   6. Hero Section 优化
   ========================================== */

/* 首页 Hero 区域在大屏幕上的优化 */
@media (min-width: 1920px) {
  .lrn-started-image {
    max-width: 1600px;
    margin: 0 auto;
  }
  
  .lrn-banner,
  .lrn-hero-section {
    padding-left: 50px;
    padding-right: 50px;
  }
}

@media (min-width: 2560px) {
  .lrn-started-image {
    max-width: 1800px;
  }
  
  .lrn-banner,
  .lrn-hero-section {
    padding-left: 80px;
    padding-right: 80px;
  }
}


/* ==========================================
   7. 字体和元素缩放优化(可选)
   ========================================== */

/* 在超大屏幕上适当增加字体大小,提升可读性 */
@media (min-width: 2560px) {
  body {
    font-size: 18px;
  }
  
  h1 {
    font-size: 52px;
  }
  
  h2 {
    font-size: 48px;
  }
  
  h3 {
    font-size: 40px;
  }
  
  .lrn-logo img {
    height: 50px;
  }
}

@media (min-width: 3840px) {
  body {
    font-size: 20px;
  }
  
  h1 {
    font-size: 60px;
  }
  
  h2 {
    font-size: 54px;
  }
  
  h3 {
    font-size: 46px;
  }
  
  .lrn-logo img {
    height: 60px;
  }
}


/* ==========================================
   8. 确保内容居中和对齐
   ========================================== */

/* 防止内容过度拉伸 */
@media (min-width: 1920px) {
  .align-center {
    text-align: center;
  }
  
  .align-right {
    text-align: right;
  }
  
  .align-left {
    text-align: left;
  }
}

/* 修复主菜单居中对齐 */
@media (min-width: 992px) {
  .lrn-main-menu {
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .lrn-main-menu > ul {
    display: flex;
    align-items: center;
    margin: 0;
    padding: 0;
  }
}


/* ==========================================
   9. 页脚列对齐优化 - 确保图标平行
   ========================================== */

/* 确保两个列的第一个ul元素从同一位置开始 */
.lrn-footer .lrn-f-contact,
.lrn-footer .lrn-f-hours {
  padding-top: 0 !important;
  margin-top: 0 !important;
}

/* 重置ul的上边距 */
.lrn-footer .lrn-f-contact ul,
.lrn-footer .lrn-f-hours ul {
  margin: 0 !important;
  padding: 0 !important;
  list-style: none !important;
}

/* 关键：使用固定的间距，不管内容有多少行 */
.lrn-footer .lrn-f-contact ul li {
  position: relative !important;
  padding-left: 50px !important;
  color: #555 !important;
  /* 使用固定高度确保对齐 */
  height: 75px !important;
  display: flex !important;
  flex-direction: column !important;
  justify-content: flex-start !important;
}

/* Address项需要更高的高度因为有两行 */
.lrn-footer .lrn-f-contact ul li:first-child {
  height: 90px !important;
}

/* 图标固定在顶部，不管内容多高 */
.lrn-footer .lrn-f-contact ul li i {
  position: absolute !important;
  left: 0 !important;
  top: 0 !important;
  font-size: 40px !important;
  width: 40px !important;
  height: 40px !important;
  line-height: 40px !important;
  color: #007acc !important;
}

/* 标签样式 */
.lrn-footer .lrn-f-contact ul li em {
  display: block !important;
  margin-bottom: 5px !important;
  line-height: 1.4 !important;
  color: #007acc !important;
  font-style: normal !important;
  font-weight: 600 !important;
}

/* 确保内容区域从固定位置开始 */
.lrn-footer .lrn-f-contact ul li em,
.lrn-footer .lrn-f-contact ul li br,
.lrn-footer .lrn-f-contact ul li:not(:has(em)) {
  position: relative !important;
}