/* style/index.css */
:root {
  --primary-color: #26A9E0;
  --secondary-color: #FFFFFF;
  --text-dark: #333333;
  --text-light: #ffffff;
  --background-dark: #000000;
  --background-light: #f8f9fa;
  --login-color: #EA7C07;
}

.page-index {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-light); /* Body background is dark (#000000 from shared.css), so main text is light */
  background-color: var(--background-dark);
}

/* 🚨 桌面端视频区域样式（必须严格遵守） */
.page-index__video-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  padding-top: var(--header-offset, 120px); /* 🚨 顶部间距以公用片段约定为准，使用 var(--header-offset)，避免被固定页头盖住 */
  background: linear-gradient(135deg, #000000 0%, #0a0a0a 100%);
}

.page-index__video-container {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* 🚨 视频点击链接样式（必须严格遵守） */
.page-index__video-link {
  display: block;
  text-decoration: none;
  position: relative;
  width: 100%;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__video-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.page-index__video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 宽高比 - 🚨 PageSpeed优化：固定宽高比避免布局偏移（CLS） */
  height: 0;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.page-index__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 12px;
  object-fit: cover;
  pointer-events: none; /* 防止视频控件阻止点击事件 */
}

/* 🚨 视频点击提示遮罩层样式（增强用户体验） */
.page-index__video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.4);
  border-radius: 12px;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 1;
}

.page-index__video-link:hover .page-index__video-overlay {
  opacity: 1;
}

.page-index__video-click-hint {
  color: var(--text-light);
  font-size: 20px;
  font-weight: bold;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.6);
  padding: 12px 25px;
  background: rgba(38, 169, 224, 0.8);
  border-radius: 8px;
  white-space: nowrap;
}

/* 🚨 Play Now按钮样式（必须严格遵守，位于视频下方中间位置） */
.page-index__video-cta {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 40px;
}

.page-index__play-now-button {
  display: inline-block;
  padding: 18px 45px;
  background: var(--primary-color);
  color: var(--text-light);
  text-decoration: none;
  border-radius: 10px;
  font-size: 20px;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 6px 15px rgba(38, 169, 224, 0.4);
  border: none;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.page-index__play-now-button:hover {
  background: #1e87c0;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(38, 169, 224, 0.6);
}

.page-index__play-now-button:active {
  transform: translateY(0);
  box-shadow: 0 4px 10px rgba(38, 169, 224, 0.3);
}

.page-index__title-section {
  background: var(--background-dark);
  padding: 80px 20px;
  text-align: center;
  color: var(--text-light);
}

.page-index__title-container {
  max-width: 900px;
  margin: 0 auto;
}

.page-index__main-title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 25px;
  line-height: 1.2;
  color: var(--primary-color);
  text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
}

.page-index__title-description {
  font-size: 18px;
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  color: var(--text-light);
}

.page-index__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.page-index__cta-button {
  display: inline-block;
  padding: 16px 35px;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  max-width: 100%; /* 🚨 按钮响应式 */
  box-sizing: border-box; /* 🚨 按钮响应式 */
  white-space: normal; /* 🚨 按钮响应式 */
  word-wrap: break-word; /* 🚨 按钮响应式 */
}

.page-index__cta-button--primary {
  background: var(--primary-color);
  color: var(--text-light);
  border: 2px solid var(--primary-color);
}

.page-index__cta-button--primary:hover {
  background: #1e87c0;
  border-color: #1e87c0;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

.page-index__cta-button--secondary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.page-index__cta-button--secondary:hover {
  background: var(--primary-color);
  color: var(--text-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

.page-index__brand-section {
  background: var(--background-light);
  padding: 80px 20px;
  color: var(--text-dark);
}

.page-index__brand-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.page-index__brand-title {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.page-index__brand-intro-text {
  font-size: 18px;
  margin-bottom: 50px;
  line-height: 1.7;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-index__brand-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.page-index__brand-item {
  background: var(--secondary-color);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  text-align: left;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__brand-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-index__brand-item-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 25px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  min-width: 200px; /* 🚨 图片最小尺寸 */
  min-height: 200px; /* 🚨 图片最小尺寸 */
}

.page-index__brand-item-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-index__brand-item-description {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-dark);
}

.page-index__faq-section {
  background: var(--background-dark);
  padding: 80px 20px;
  color: var(--text-light);
}

.page-index__faq-container {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.page-index__faq-title {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 50px;
  color: var(--primary-color);
}

.page-index__faq-list {
  text-align: left;
}

/* FAQ容器样式 */
.page-index__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  background: #1a1a1a;
}

/* FAQ默认状态 - 答案隐藏 */
.page-index__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
  padding: 0 20px;
  opacity: 0;
  color: var(--text-light);
}

/* FAQ展开状态 - 🚨 使用!important và đủ lớn max-height để đảm bảo mở rộng */
.page-index__faq-item.active .page-index__faq-answer {
  max-height: 2000px !important; /* 🚨 Sử dụng!important để đảm bảo ưu tiên, giá trị đủ lớn để chứa mọi nội dung */
  padding: 20px !important;
  opacity: 1;
  background: #2a2a2a;
  border-radius: 0 0 8px 8px;
}

/* Vấn đề phong cách */
.page-index__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  background: #0d0d0d;
  border: 1px solid #262626;
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-index__faq-question:hover {
  background: #1a1a1a;
  border-color: var(--primary-color);
}

.page-index__faq-question:active {
  background: #262626;
}

/* Vấn đề tiêu đề phong cách */
.page-index__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none; /* Ngăn chặn thẻ h3 chặn sự kiện nhấp */
  color: var(--primary-color);
}

/* Chuyển đổi biểu tượng */
.page-index__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  line-height: 1;
  color: var(--primary-color);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* Ngăn chặn biểu tượng chặn sự kiện nhấp */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(38, 169, 224, 0.1);
}

.page-index__faq-item.active .page-index__faq-toggle {
  color: var(--text-light);
  background: var(--primary-color);
  transform: rotate(45deg); /* Optional: rotate for 'X' effect */
}

.page-index__blog-section {
  background: var(--background-light);
  padding: 80px 20px;
  color: var(--text-dark);
}

.page-index__blog-container {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.page-index__blog-title {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.page-index__blog-intro-text {
  font-size: 18px;
  margin-bottom: 50px;
  line-height: 1.7;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-index__blog-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.page-index__blog-item {
  background: var(--secondary-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: left;
}

.page-index__blog-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-index__blog-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.page-index__blog-item-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  min-width: 200px; /* 🚨 图片最小尺寸 */
  min-height: 200px; /* 🚨 图片最小尺寸 */
}

.page-index__blog-item-title {
  font-size: 20px;
  font-weight: 600;
  margin: 20px 20px 10px 20px;
  line-height: 1.4;
  color: var(--primary-color);
}

.page-index__blog-item-excerpt {
  font-size: 15px;
  margin: 0 20px 15px 20px;
  color: var(--text-dark);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.page-index__blog-item-date {
  font-size: 14px;
  color: #777;
  margin: 0 20px 20px 20px;
  display: block;
}

.page-index__blog-view-all {
  margin-top: 50px;
  text-align: center;
}

/* 🚨 移动端响应式设计（必须严格遵守） */
@media (max-width: 768px) {
  .page-index {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-index__video-section {
    padding-top: var(--header-offset, 120px) !important;
    padding-bottom: 40px;
    padding-left: 15px;
    padding-right: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }
  
  .page-index__video-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0;
    padding-right: 0;
    overflow: hidden !important;
  }
  
  .page-index__video-link {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  
  .page-index__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    border-radius: 8px;
    overflow: hidden !important;
  }
  
  .page-index__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    border-radius: 8px;
    object-fit: contain; 
  }
  
  .page-index__video-cta {
    margin-top: 30px;
    padding-left: 15px;
    padding-right: 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
  
  .page-index__play-now-button {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 15px 30px !important;
    font-size: 18px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-index__video-click-hint {
    font-size: 16px !important;
    padding: 10px 20px !important;
  }

  .page-index__title-section,
  .page-index__brand-section,
  .page-index__faq-section,
  .page-index__blog-section {
    padding: 40px 15px;
  }

  .page-index__main-title {
    font-size: 32px;
  }

  .page-index__title-description {
    font-size: 16px;
  }

  .page-index__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }

  .page-index__cta-button {
    width: 100%;
    padding: 14px 25px;
    font-size: 16px;
  }

  .page-index__brand-title,
  .page-index__faq-title,
  .page-index__blog-title {
    font-size: 30px;
    margin-bottom: 30px;
  }

  .page-index__brand-intro-text,
  .page-index__blog-intro-text {
    font-size: 16px;
    margin-bottom: 30px;
  }

  .page-index__brand-content,
  .page-index__blog-list {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .page-index__brand-item-title {
    font-size: 20px;
  }

  .page-index__brand-item-image {
    height: 200px;
  }

  /* FAQ specific mobile styles */
  .page-index__faq-question {
    padding: 15px 20px;
  }
  
  .page-index__faq-question h3 {
    font-size: 16px;
  }
  
  .page-index__faq-toggle {
    font-size: 24px;
    width: 28px;
    height: 28px;
  }

  .page-index__faq-item.active .page-index__faq-answer {
    padding: 15px !important;
  }

  /* 🚨 移动端所有图片响应式适配（必须严格遵守） */
  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    min-width: 200px !important;
    min-height: 200px !important;
  }
  
  .page-index__section,
  .page-index__card,
  .page-index__container,
  .page-index__brand-item,
  .page-index__blog-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0;
    padding-right: 0;
    margin-left: auto;
    margin-right: auto;
    overflow: hidden !important;
  }
  
  .page-index__brand-section .page-index__brand-container,
  .page-index__faq-section .page-index__faq-container,
  .page-index__blog-section .page-index__blog-container {
    padding-left: 0;
    padding-right: 0;
  }

  .page-index__blog-item-image {
    min-width: 200px !important;
    min-height: 200px !important;
  }
}