/* style/download.css */

/* Biến CSS */
:root {
  --primary-color: #003366;
  --secondary-color: #FFD700;
  --accent-color: #CC0000;
  --text-light: #ffffff;
  --text-dark: #333333;
  --bg-dark: #121212;
  --bg-light: #f8f8f8;
  --border-color: #e0e0e0;
}

/* Cơ sở toàn trang (trong phạm vi .page-download) */
.page-download {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-light); /* Đảm bảo chữ sáng trên nền tối của body */
  background-color: var(--bg-dark); /* Nền tối để phù hợp với body */
  padding: 20px;
}

.page-download a {
  color: var(--secondary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-download a:hover {
  color: #ffeb80; /* Màu vàng nhạt hơn khi hover */
}

/* Cấu trúc chung cho các phần */
.page-download__title-container,
.page-download__features-container,
.page-download__brand-container,
.page-download__faq-container,
.page-download__blog-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  box-sizing: border-box;
}

.page-download__section-title,
.page-download__blog-title,
.page-download__brand-title {
  font-size: 36px;
  font-weight: bold;
  color: var(--secondary-color); /* Tiêu đề màu vàng */
  text-align: center;
  margin-bottom: 50px;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

/* Phần Tiêu đề chính */
.page-download__title-section {
  position: relative;
  width: 100%;
  padding: 60px 20px;
  padding-top: 120px; /* Đảm bảo nội dung không bị che bởi header cố định */
  text-align: center;
  background: linear-gradient(135deg, var(--primary-color) 0%, #001a33 100%); /* Nền gradient xanh đậm */
  color: var(--text-light);
  overflow: hidden;
  box-sizing: border-box;
}

.page-download__main-title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.2;
  color: var(--secondary-color); /* Tiêu đề chính màu vàng */
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.4);
}

.page-download__title-description {
  font-size: 20px;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: rgba(255, 255, 255, 0.9);
}

.page-download__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 40px;
}

.page-download__cta-button {
  display: inline-block;
  padding: 15px 35px;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  border: none;
  cursor: pointer;
  white-space: normal; /* Cho phép chữ xuống dòng */
  word-wrap: break-word; /* Ngắt từ khi quá dài */
}

.page-download__cta-button--primary {
  background: var(--secondary-color);
  color: var(--primary-color); /* Nút chính màu vàng chữ xanh đậm */
}

.page-download__cta-button--primary:hover {
  background: #ffeb80;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-download__cta-button--secondary {
  background: var(--primary-color);
  color: var(--text-light);
  border: 2px solid var(--secondary-color); /* Nút phụ màu xanh đậm chữ trắng viền vàng */
}

.page-download__cta-button--secondary:hover {
  background: #004d99;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-download__promo-image {
  max-width: 700px;
  width: 100%;
  height: auto;
  margin: 0 auto;
  display: block;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
  object-fit: contain;
}

/* Phần Tính năng */
.page-download__features-section {
  background-color: var(--bg-dark);
  padding-top: 60px;
  padding-bottom: 60px;
  box-sizing: border-box;
}

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

.page-download__feature-item {
  background: rgba(255, 255, 255, 0.1); /* Nền hơi trong suốt */
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  color: var(--text-light);
}

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

.page-download__feature-icon {
  width: 100px;
  height: 100px;
  object-fit: contain;
  margin-bottom: 20px;
  border-radius: 8px; /* Đảm bảo ảnh không phải icon nhỏ */
}

.page-download__feature-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--secondary-color);
}

.page-download__feature-description {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
}

/* Phần Giới thiệu thương hiệu */
.page-download__brand-section {
  background-color: #1a1a1a; /* Nền hơi sáng hơn một chút so với body */
  padding-top: 60px;
  padding-bottom: 60px;
  box-sizing: border-box;
}

.page-download__brand-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.page-download__brand-item {
  background: rgba(255, 255, 255, 0.08); /* Nền hơi trong suốt */
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  color: var(--text-light);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.page-download__brand-item h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--secondary-color);
}

.page-download__brand-item p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
}

/* Phần FAQ */
.page-download__faq-section {
  background-color: var(--bg-dark);
  padding-top: 60px;
  padding-bottom: 60px;
  box-sizing: border-box;
}

.page-download__faq-list {
  margin-top: 30px;
}

/* FAQ容器样式 */
.page-download__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.08); /* Nền hơi trong suốt */
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* FAQ默认状态 - 答案隐藏 */
.page-download__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
  padding: 0 20px;
  opacity: 0;
  color: rgba(255, 255, 255, 0.7);
}

/* FAQ展开状态 - 🚨 使用!important和足够大的max-height确保一定能展开 */
.page-download__faq-item.active .page-download__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: rgba(255, 255, 255, 0.05); /* Nền hơi sáng hơn khi mở */
  border-radius: 0 0 8px 8px;
  color: rgba(255, 255, 255, 0.85);
}

/* 问题样式 */
.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
  color: var(--text-light);
}

.page-download__faq-item.active .page-download__faq-question {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

.page-download__faq-question:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.1);
}

.page-download__faq-question:active {
  background: rgba(255, 255, 255, 0.2);
}

/* 问题标题样式 */
.page-download__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none; /* 防止h3标签阻止点击事件 */
  color: var(--secondary-color);
}

/* 切换图标 */
.page-download__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  line-height: 1;
  color: var(--secondary-color);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* 防止图标阻止点击事件 */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}

.page-download__faq-item.active .page-download__faq-toggle {
  color: var(--secondary-color);
  transform: rotate(45deg);
}

/* Phần Blog */
.page-download__blog-section {
  background-color: #1a1a1a;
  padding-top: 60px;
  padding-bottom: 60px;
  box-sizing: border-box;
}

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

.page-download__blog-item {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.page-download__blog-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.page-download__blog-link {
  display: block;
  padding: 20px;
  color: var(--text-light);
  text-decoration: none;
}

.page-download__blog-item-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.page-download__blog-item-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--secondary-color);
}

.page-download__blog-item-excerpt {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 15px;
}

.page-download__blog-item-date {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  display: block;
  text-align: right;
}

/* Responsive */
@media (max-width: 1024px) {
  .page-download__main-title {
    font-size: 40px;
  }
  .page-download__section-title,
  .page-download__blog-title,
  .page-download__brand-title {
    font-size: 32px;
  }
}

@media (max-width: 768px) {
  .page-download__title-section {
    padding-top: 100px !important; /* Mobile: Adjust for fixed header */
    padding-left: 15px;
    padding-right: 15px;
    box-sizing: border-box;
  }
  
  .page-download__title-container,
  .page-download__features-container,
  .page-download__brand-container,
  .page-download__faq-container,
  .page-download__blog-container {
    padding: 30px 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

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

  .page-download__title-description {
    font-size: 18px;
  }

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

  .page-download__cta-button {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding: 12px 25px;
    font-size: 16px;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-download__promo-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
    border-radius: 8px;
  }

  .page-download__section-title,
  .page-download__blog-title,
  .page-download__brand-title {
    font-size: 28px;
    margin-bottom: 30px;
  }

  .page-download__feature-item,
  .page-download__brand-item,
  .page-download__blog-item {
    padding: 25px;
  }

  .page-download__feature-icon {
    width: 80px;
    height: 80px;
  }

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

  .page-download__faq-question h3 {
    font-size: 16px;
  }

  .page-download__faq-toggle {
    font-size: 24px;
    width: 28px;
    height: 28px;
  }

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

  .page-download__blog-item-image {
    height: 180px;
  }

  .page-download__blog-item-title {
    font-size: 18px;
  }

  /* Tất cả hình ảnh trong .page-download */
  .page-download img {
    max-width: 100% !important;
    height: auto !important;
    display: block !important;
    box-sizing: border-box !important;
  }
}

@media (max-width: 480px) {
  .page-download__main-title {
    font-size: 28px;
  }
  .page-download__title-description {
    font-size: 16px;
  }
  .page-download__section-title,
  .page-download__blog-title,
  .page-download__brand-title {
    font-size: 24px;
  }
  .page-download__cta-button {
    font-size: 15px;
    padding: 10px 20px;
  }
  .page-download__feature-title {
    font-size: 18px;
  }
  .page-download__faq-question h3 {
    font-size: 15px;
  }
  .page-download__faq-toggle {
    font-size: 22px;
    width: 26px;
    height: 26px;
  }
  .page-download__blog-item-title {
    font-size: 17px;
  }
}