/* style/index.css */
:root {
  --primary-color: #26A9E0;
  --secondary-color: #0056b3; /* Darker shade for hover */
  --text-dark: #333333;
  --text-light: #ffffff;
  --background-light: #ffffff;
  --background-dark: #26A9E0;
  --button-login: #EA7C07;
}

.page-index {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--background-light);
}

/* 🚨 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;
  /* 🚨 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 */
  padding-top: var(--header-offset, 120px);
  background-color: #f0f0f0; /* Light background for this section */
}

.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, 0.2);
}

.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: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.page-index__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 8px;
  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（可选，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, 0.3);
  border-radius: 8px;
  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: #ffffff;
  font-size: 18px;
  font-weight: bold;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  padding: 10px 20px;
  background: rgba(38, 169, 224, 0.8); /* Using primary color */
  border-radius: 5px;
  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: 30px;
}

.page-index__play-now-button {
  display: inline-block;
  padding: 15px 40px;
  background: var(--button-login, #EA7C07); /* Using login color for CTA */
  color: var(--text-light, #ffffff);
  text-decoration: none;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: none;
  cursor: pointer;
}

.page-index__play-now-button:hover {
  background: #d46a00; /* Slightly darker orange */
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.page-index__play-now-button:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.page-index__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-index__hero-section {
  padding: 80px 0;
  text-align: center;
  background-color: var(--background-light);
  color: var(--text-dark);
}

.page-index__main-title {
  font-size: 3.2em;
  color: var(--primary-color);
  margin-bottom: 20px;
  line-height: 1.2;
  font-weight: bold;
}

.page-index__description {
  font-size: 1.2em;
  color: #555;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

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

.page-index__cta-button {
  display: inline-block;
  padding: 15px 30px;
  text-decoration: none;
  border-radius: 5px;
  font-size: 1.1em;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

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

.page-index__btn-primary:hover {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.page-index__btn-secondary {
  background-color: var(--background-light);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.page-index__btn-secondary:hover {
  background-color: var(--primary-color);
  color: var(--text-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.page-index__section-title {
  font-size: 2.5em;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 10px;
}

.page-index__section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--button-login);
  border-radius: 2px;
}

.page-index__about-us-section {
  padding: 80px 0;
  background-color: var(--background-light);
  color: var(--text-dark);
}

.page-index__about-content {
  display: flex;
  gap: 40px;
  align-items: center;
  flex-wrap: wrap;
}

.page-index__about-text {
  flex: 1;
  min-width: 300px;
}

.page-index__about-text p {
  margin-bottom: 20px;
  font-size: 1.1em;
  color: #555;
}

.page-index__about-image {
  flex: 1;
  min-width: 300px;
  text-align: center;
}

.page-index__about-image img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  min-width: 200px;
  min-height: 200px;
}

.page-index__read-more-button {
  margin-top: 20px;
}

.page-index__features-section {
  padding: 80px 0;
  background-color: var(--background-dark);
  color: var(--text-light);
}

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

.page-index__feature-item {
  text-align: center;
  padding: 30px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__feature-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.page-index__feature-item img {
  max-width: 100%;
  height: auto;
  margin-bottom: 20px;
  border-radius: 8px;
  min-width: 200px;
  min-height: 200px;
}

.page-index__feature-title {
  font-size: 1.6em;
  color: var(--text-light);
  margin-bottom: 15px;
}

.page-index__feature-item p {
  color: rgba(255, 255, 255, 0.8);
}

.page-index__games-section {
  padding: 80px 0;
  background-color: var(--background-light);
  color: var(--text-dark);
  text-align: center;
}

.page-index__games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-index__game-card {
  background: var(--background-light);
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__game-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.page-index__game-card img {
  width: 100%;
  height: 200px; /* Fixed height for consistency */
  object-fit: cover;
  min-width: 200px;
  min-height: 200px;
}

.page-index__game-title {
  font-size: 1.4em;
  margin: 20px 15px 10px;
}

.page-index__game-title a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-index__game-title a:hover {
  color: var(--secondary-color);
}

.page-index__game-card p {
  color: #666;
  padding: 0 15px 20px;
  font-size: 0.95em;
}

.page-index__cta-center {
  margin-top: 50px;
}

.page-index__faq-section {
  padding: 80px 0;
  background-color: var(--background-light);
  color: var(--text-dark);
}

.page-index__faq-list {
  max-width: 900px;
  margin: 0 auto;
  margin-top: 40px;
}

/* FAQ容器样式 */
.page-index__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  overflow: hidden;
  border: 1px solid #e0e0e0;
}

/* 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 15px;
  opacity: 0;
}

/* FAQ展开状态 - 🚨 使用!important và đủ lớn max-height để đảm bảo có thể 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 15px !important;
  opacity: 1;
  background: #f9f9f9;
  border-radius: 0 0 5px 5px;
}

/* Vấn đề kiểu dáng */
.page-index__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: #fff;
  border-bottom: 1px solid #e0e0e0; /* Add a bottom border */
  border-radius: 5px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-index__faq-item.active .page-index__faq-question {
  border-bottom: none; /* Remove border when active */
  border-radius: 5px 5px 0 0;
}

.page-index__faq-question:hover {
  background: #f5f5f5;
  border-color: #d0d0d0;
}

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

/* Vấn đề tiêu đề kiểu dáng */
.page-index__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none; /* Ngăn thẻ h3 chặn sự kiện nhấp */
}

/* Biểu tượng chuyển đổi */
.page-index__faq-toggle {
  font-size: 24px;
  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 biểu tượng chặn sự kiện nhấp */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.page-index__faq-item.active .page-index__faq-toggle {
  color: var(--secondary-color);
  transform: rotate(45deg); /* Rotate for 'x' effect */
}

.page-index__brand-section {
  padding: 80px 0;
  background-color: var(--background-dark);
  color: var(--text-light);
  text-align: center;
}

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

.page-index__brand-item {
  background: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.page-index__brand-item img {
  max-width: 100%;
  height: auto;
  margin-bottom: 20px;
  border-radius: 8px;
  min-width: 200px;
  min-height: 200px;
}

.page-index__brand-title-item {
  font-size: 1.8em;
  color: var(--text-light);
  margin-bottom: 15px;
}

.page-index__brand-item p {
  color: rgba(255, 255, 255, 0.8);
}

.page-index__blog-section {
  padding: 80px 0;
  background-color: var(--background-light);
  color: var(--text-dark);
  text-align: center;
}

.page-index__blog-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-index__blog-item {
  background: var(--background-light);
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  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 20px rgba(0, 0, 0, 0.15);
}

.page-index__blog-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  min-width: 200px;
  min-height: 200px;
}

.page-index__blog-content {
  padding: 20px;
}

.page-index__blog-item-title {
  font-size: 1.4em;
  margin-bottom: 10px;
  line-height: 1.3;
}

.page-index__blog-item-title a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-index__blog-item-title a:hover {
  color: var(--secondary-color);
}

.page-index__blog-item-excerpt {
  color: #666;
  font-size: 0.95em;
  margin-bottom: 15px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.page-index__blog-item-date {
  font-size: 0.85em;
  color: #999;
}

.page-index__contact-cta-section {
  padding: 80px 0;
  background-color: var(--background-dark);
  color: var(--text-light);
  text-align: center;
}

/* 🚨 移动端响应式设计（必须严格遵守） */
@media (max-width: 768px) {
  .page-index__video-section {
    /* 移动端 --header-offset 由 shared 在 media 中定义，此处沿用变量即可 */
    padding-top: var(--header-offset, 120px) !important;
    padding-bottom: 40px;
    padding-left: 15px;
    padding-right: 15px;
    /* 🚨 移动端必须确保不超出容器 */
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }
  
  .page-index__video-container {
    /* 🚨 移动端必须确保不超出容器 */
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0;
    padding-right: 0;
    overflow: hidden !important;
  }
  
  /* 🚨 视频链接移动端适配（必须严格遵守） */
  .page-index__video-link {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  
  .page-index__video-wrapper {
    /* 🚨 移动端必须确保不超出容器 */
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    border-radius: 4px;
    overflow: hidden !important;
  }
  
  .page-index__video {
    /* 🚨 移动端必须确保视频不超出容器 */
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    border-radius: 4px;
    object-fit: contain; /* 移动端使用contain đảm bảo video hiển thị đầy đủ và không bị tràn */
  }
  
  /* 🚨 Play Now nút phản hồi trên thiết bị di động (phải tuân thủ nghiêm ngặt) */
  .page-index__video-cta {
    margin-top: 20px;
    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: 12px 30px !important;
    font-size: 16px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  
  /* 🚨 Lớp phủ gợi ý nhấp vào video trên thiết bị di động */
  .page-index__video-click-hint {
    font-size: 14px !important;
    padding: 8px 16px !important;
  }

  .page-index__main-title {
    font-size: 2.2em;
  }

  .page-index__description {
    font-size: 1em;
    padding: 0 15px;
  }

  .page-index__cta-buttons {
    flex-direction: column;
    gap: 15px;
    padding: 0 15px;
  }

  .page-index__cta-button {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
  }

  .page-index__section-title {
    font-size: 2em;
    margin-bottom: 30px;
  }

  .page-index__about-content {
    flex-direction: column;
    gap: 30px;
  }

  .page-index__about-text, .page-index__about-image {
    min-width: unset;
    width: 100%;
    padding: 0 15px;
    box-sizing: border-box;
  }

  .page-index__features-grid, .page-index__games-grid, .page-index__brand-content, .page-index__blog-list {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 15px;
  }

  .page-index__feature-item, .page-index__game-card, .page-index__brand-item, .page-index__blog-item {
    padding: 20px;
  }

  .page-index__game-card img, .page-index__blog-item img {
    
  }

  .page-index__game-title, .page-index__feature-title, .page-index__brand-title-item, .page-index__blog-item-title {
    font-size: 1.3em;
  }

  .page-index__faq-question {
    padding: 15px;
    flex-wrap: wrap;
  }
  
  .page-index__faq-question h3 {
    font-size: 15px;
    margin-bottom: 0;
    width: calc(100% - 40px);
  }
  
  .page-index__faq-toggle {
    margin-left: 10px;
    width: 24px;
    height: 24px;
    font-size: 20px;
  }
  
  .page-index__faq-answer {
    padding: 0 15px;
  }
  
  .page-index__faq-item.active .page-index__faq-answer {
    padding: 15px !important;
  }

  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  
  .page-index__section, .page-index__card, .page-index__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* 视频容器 mobile adapt */
  .page-index video,
  .page-index__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  
  .page-index__video-section,
  .page-index__video-container,
  .page-index__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0px;
    padding-right: 0px;
    overflow: hidden !important;
  }

  .page-index__cta-button,
  .page-index__btn-primary,
  .page-index__btn-secondary,
  .page-index a[class*="button"],
  .page-index a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  
  .page-index__cta-buttons,
  .page-index__button-group,
  .page-index__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-wrap: wrap !important;
    gap: 10px;
  }
  
  .page-index__cta-buttons {
    display: flex;
    flex-direction: column;
  }
}

/* 智能文字颜色选择器 - Phải triển khai (sử dụng quy tắc đặt tên BEM) */
.page-index__light-bg {
  color: var(--text-dark); /* Nền sáng với văn bản tối */
  background-color: var(--background-light);
}

.page-index__dark-bg {
  color: var(--text-light); /* Nền tối với văn bản sáng */
  background-color: var(--background-dark);
}

/* Vùng nội dung chính - Ưu tiên cao nhất (sử dụng quy tắc đặt tên BEM) */
.page-index__hero-section p, .page-index__about-us-section p, .page-index__features-section p, .page-index__games-section p, .page-index__faq-section p, .page-index__brand-section p, .page-index__blog-item p, .page-index__contact-cta-section p {
  color: #555555; /* Đảm bảo dễ đọc trên hầu hết các nền */
}

.page-index__dark-bg p {
  color: rgba(255, 255, 255, 0.9); /* Màu văn bản sáng trên nền tối */
}

.page-index__dark-bg h1, .page-index__dark-bg h2, .page-index__dark-bg h3 {
  color: var(--text-light);
}

.page-index__light-bg h1, .page-index__light-bg h2, .page-index__light-bg h3 {
  color: var(--primary-color);
}

.page-index__blog-item {
  background: var(--background-light);
  color: var(--text-dark);
  border: 1px solid #e0e0e0; /* Thêm đường viền để tăng khả năng đọc */
}

.page-index__btn-primary {
  background: var(--primary-color);
  color: var(--text-light); /* Nút văn bản luôn sử dụng màu trắng */
  border: 2px solid transparent;
}

.page-index__btn-secondary {
  background: var(--background-light);
  color: var(--primary-color); /* Sử dụng màu thương hiệu để đảm bảo độ tương phản */
  border: 2px solid var(--primary-color);
}

.page-index__play-now-button {
  background: var(--button-login);
  color: var(--text-light);
}