/* style/download.css */
:root {
  --primary-color: #0A1931;
  --secondary-color: #FFD700;
  --text-light: #ffffff;
  --text-dark: #333333;
  --background-dark: #000;
  --background-light: #f8f9fa;
  --border-color: #3a475a;
}

.page-download {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-light); /* Default text color for dark body background */
  background-color: transparent; /* Body background is handled by shared.css */
  padding-top: 120px; /* Adjust for fixed header on desktop */
}

/* Ensure the main content container respects responsive padding */
.page-download__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-download__section-title {
  font-size: 38px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 25px;
  color: var(--secondary-color);
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.page-download__section-subtitle {
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 20px;
  color: var(--secondary-color);
}

.page-download__section-description {
  font-size: 18px;
  text-align: center;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: var(--text-light);
}

/* General Section Styles */
.page-download__dark-section {
  background-color: var(--primary-color);
  padding: 80px 0;
  color: var(--text-light);
}

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

.page-download__light-bg .page-download__section-title, 
.page-download__light-bg .page-download__section-subtitle, 
.page-download__light-bg .page-download__section-description {
  color: var(--text-dark);
}

/* Hero Section */
.page-download__hero-section {
  text-align: center;
  position: relative;
  overflow: hidden;
  padding-bottom: 40px; /* Space for image below */
  padding-top: 120px; /* Ensure content is below fixed header */
}

.page-download__main-title {
  font-size: 48px;
  color: var(--secondary-color);
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-download__subtitle {
  font-size: 22px;
  color: var(--text-light);
  margin-bottom: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-download__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.page-download__btn-primary,
.page-download__btn-secondary {
  display: inline-block;
  padding: 15px 35px;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  text-align: center;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

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

.page-download__btn-primary:hover {
  background-color: darken(var(--secondary-color), 10%);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

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

.page-download__btn-secondary:hover {
  background-color: var(--secondary-color);
  color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

.page-download__hero-image {
  max-width: 800px;
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
  margin-top: 30px;
}

/* Feature Grid Section */
.page-download__feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-download__feature-item {
  text-align: center;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  background-color: #ffffff; /* Light background for card in light section */
  color: var(--text-dark);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.page-download__feature-icon {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

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

.page-download__feature-text {
  font-size: 16px;
  color: var(--text-dark);
}

/* Guide Section */
.page-download__guide-steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 40px;
}

.page-download__guide-card {
  background-color: rgba(255, 255, 255, 0.08); /* Semi-transparent white for dark section */
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  color: var(--text-light);
}

.page-download__guide-title {
  font-size: 32px;
  font-weight: bold;
  margin-bottom: 25px;
  color: var(--secondary-color);
  text-align: center;
}

.page-download__guide-list {
  list-style-type: decimal;
  padding-left: 25px;
  margin-bottom: 30px;
  font-size: 17px;
}

.page-download__guide-list li {
  margin-bottom: 15px;
}

.page-download__guide-list li strong {
  color: var(--secondary-color);
}

.page-download__guide-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 30px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.page-download__important-notes {
  background-color: rgba(255, 255, 255, 0.08);
  padding: 30px;
  border-radius: 12px;
  margin-top: 50px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  color: var(--text-light);
}

.page-download__important-notes h3 {
  color: var(--secondary-color);
  margin-bottom: 20px;
  font-size: 24px;
  text-align: center;
}

.page-download__important-notes ul {
  list-style-type: disc;
  padding-left: 25px;
  font-size: 16px;
}

.page-download__important-notes li {
  margin-bottom: 10px;
}

/* App Features Detail Section */
.page-download__features-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-download__feature-item-detail {
  background-color: #ffffff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  color: var(--text-dark);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

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

.page-download__feature-detail-title {
  font-size: 26px;
  font-weight: bold;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-download__feature-detail-text {
  font-size: 16px;
  color: var(--text-dark);
}

/* Brand Intro Section */
.page-download__brand-intro-section {
  padding: 80px 0;
}

.page-download__brand-content {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-top: 40px;
}

.page-download__brand-image {
  width: 300px;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  flex-shrink: 0;
}

.page-download__brand-text p {
  font-size: 18px;
  margin-bottom: 20px;
  color: var(--text-light);
}

/* FAQ Section */
.page-download__faq-section {
  padding: 80px 0;
}

.page-download__faq-list {
  margin-top: 40px;
}

/* FAQ容器样式 */
.page-download__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background-color: #ffffff;
  color: var(--text-dark);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

/* 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, opacity 0.4s ease;
  padding: 0 20px;
  opacity: 0;
  background: #fdfdfd;
  color: var(--text-dark);
  font-size: 16px;
}

/* 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 đảm bảo ưu tiên, giá trị đủ lớn để chứa mọi nội dung */
  padding: 20px !important;
  opacity: 1;
  border-top: 1px solid var(--border-color);
  border-radius: 0 0 8px 8px;
}

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

.page-download__faq-item.active .page-download__faq-question {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  background: var(--primary-color);
}

.page-download__faq-question:hover {
  background: #1a2a47; /* Slightly lighter primary color on hover */
}

.page-download__faq-question:active {
  background: #050c18;
}

/* 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(--text-light);
}

/* 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;
  border-radius: 50%;
  border: 2px solid var(--secondary-color);
}

.page-download__faq-item.active .page-download__faq-toggle {
  color: var(--primary-color);
  background-color: var(--secondary-color);
  transform: rotate(180deg);
}

/* Final CTA Section */
.page-download__final-cta-section {
  text-align: center;
  padding: 100px 0;
}

/* Card general style */
.page-download__card {
  background-color: #ffffff;
  color: var(--text-dark);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Image general responsive styles */
.page-download img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-download__main-title {
    font-size: 42px;
  }
  .page-download__section-title {
    font-size: 34px;
  }
  .page-download__guide-steps {
    grid-template-columns: 1fr;
  }
  .page-download__brand-content {
    flex-direction: column;
    text-align: center;
  }
  .page-download__brand-image {
    margin-bottom: 30px;
  }
}

@media (max-width: 768px) {
  .page-download {
    padding-top: 100px !important; /* Mobile: Adjust for fixed header */
    font-size: 16px;
    line-height: 1.6;
  }
  
  .page-download__container {
    padding: 0 15px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-download__hero-section {
    padding-top: 10px !important; /* Mobile: Adjust for fixed header */
    padding-bottom: 30px;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-download__main-title {
    font-size: 32px;
    margin-bottom: 15px;
  }

  .page-download__subtitle {
    font-size: 18px;
    margin-bottom: 30px;
  }

  .page-download__cta-buttons {
    flex-direction: column;
    gap: 15px;
    margin-bottom: 40px;
    padding: 0 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

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

  .page-download__section-title {
    font-size: 28px;
    margin-bottom: 20px;
  }

  .page-download__section-description {
    font-size: 16px;
    margin-bottom: 30px;
  }

  .page-download__feature-grid, .page-download__features-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-download__feature-item,
  .page-download__guide-card,
  .page-download__important-notes,
  .page-download__feature-item-detail,
  .page-download__brand-content,
  .page-download__faq-item,
  .page-download__card {
    padding: 20px;
    border-radius: 8px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-download__guide-card {
    padding: 30px 20px;
  }

  .page-download__guide-title {
    font-size: 26px;
  }

  .page-download__guide-list {
    font-size: 15px;
    padding-left: 20px;
  }

  .page-download__important-notes h3 {
    font-size: 20px;
  }

  .page-download__brand-image {
    width: 250px;
    height: auto;
  }

  /* FAQ Mobile */
  .page-download__faq-question {
    padding: 15px;
    flex-wrap: wrap;
  }
  
  .page-download__faq-question h3 {
    font-size: 16px;
    width: calc(100% - 40px);
  }
  
  .page-download__faq-toggle {
    margin-left: 10px;
    width: 28px;
    height: 28px;
    font-size: 24px;
  }
  
  .page-download__faq-answer {
    padding: 0 15px;
  }
  
  .page-download__faq-item.active .page-download__faq-answer {
    padding: 15px !important;
  }

  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  .page-download__section, .page-download__card, .page-download__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
}

@media (max-width: 480px) {
  .page-download__main-title {
    font-size: 28px;
  }
  .page-download__subtitle {
    font-size: 16px;
  }
  .page-download__section-title {
    font-size: 24px;
  }
  .page-download__feature-title {
    font-size: 20px;
  }
  .page-download__guide-title {
    font-size: 22px;
  }
  .page-download__feature-detail-title {
    font-size: 22px;
  }
  .page-download__hero-image {
    border-radius: 8px;
  }
  .page-download__btn-primary, .page-download__btn-secondary {
    padding: 10px 20px;
    font-size: 15px;
  }
  .page-download__faq-question h3 {
    font-size: 15px;
  }
}