/* Biến màu sắc */
:root {
  --page-download-primary-color: #FF8C1A;
  --page-download-accent-color: #FFA53A;
  --page-download-card-bg: #17191F;
  --page-download-background-color: #0D0E12;
  --page-download-text-main: #FFF3E6;
  --page-download-border-color: #A84F0C;
  --page-download-glow-color: #FFB04D;
  --page-download-deep-orange: #D96800;
}

/* Thiết lập chung cho trang download */
.page-download {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--page-download-text-main); /* Áp dụng màu văn bản chính cho nền tối */
  background-color: var(--page-download-background-color);
}

.page-download__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.page-download__section {
  padding: 60px 0;
  position: relative;
}

.page-download__dark-bg {
  background-color: var(--page-download-background-color);
  color: var(--page-download-text-main);
}

.page-download__light-bg {
  background-color: #f8f8f8; /* Một màu nền sáng an toàn */
  color: #333333; /* Màu chữ tối cho nền sáng */
}

.page-download__section-title {
  font-size: 36px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
  color: var(--page-download-primary-color);
  text-shadow: 0 0 8px rgba(255, 140, 26, 0.5);
}

.page-download__text-block {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px;
  font-size: 18px;
  line-height: 1.8;
}

.page-download__text-center {
  text-align: center;
}

/* Hero Section */
.page-download__hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-top: 10px; /* Small top padding, body handles header offset */
  padding-bottom: 60px;
  position: relative;
  overflow: hidden;
}

.page-download__hero-image {
  width: 100%;
  max-height: 700px;
  overflow: hidden;
  position: relative;
  z-index: 0;
}

.page-download__hero-image img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  object-position: center;
}

.page-download__hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin-top: 40px;
  padding: 0 20px;
}

.page-download__main-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 900;
  color: var(--page-download-accent-color);
  margin-bottom: 20px;
  line-height: 1.2;
  text-shadow: 0 0 15px rgba(255, 165, 58, 0.7);
}

.page-download__description {
  font-size: clamp(16px, 2vw, 20px);
  margin-bottom: 30px;
  color: var(--page-download-text-main);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.page-download__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}

.page-download__btn-primary,
.page-download__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-download__btn-primary {
  background: linear-gradient(180deg, var(--page-download-accent-color) 0%, var(--page-download-deep-orange) 100%);
  color: #ffffff;
  border: 2px solid transparent;
  box-shadow: 0 5px 15px rgba(255, 165, 58, 0.4);
}

.page-download__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(255, 165, 58, 0.6);
  opacity: 0.9;
}

.page-download__btn-secondary {
  background: #ffffff;
  color: var(--page-download-primary-color);
  border: 2px solid var(--page-download-primary-color);
  box-shadow: 0 5px 15px rgba(255, 140, 26, 0.2);
}

.page-download__btn-secondary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(255, 140, 26, 0.4);
  background: var(--page-download-primary-color);
  color: #ffffff;
}

/* Why Download Section */
.page-download__why-download .page-download__section-title {
  color: var(--page-download-primary-color);
}

.page-download__why-download .page-download__text-block {
  color: #555555;
}

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

.page-download__feature-card {
  background-color: #ffffff; /* Sáng cho nền sáng */
  color: #333333;
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #e0e0e0;
}

.page-download__feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
}

.page-download__feature-card img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.page-download__feature-card .page-download__card-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--page-download-primary-color);
}

.page-download__feature-card p {
  font-size: 16px;
  line-height: 1.7;
  color: #555555;
}

/* How To Download Section */
.page-download__how-to-download .page-download__section-title {
  color: var(--page-download-accent-color);
}

.page-download__how-to-download .page-download__text-block {
  color: var(--page-download-text-main);
}

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

.page-download__step-card {
  background-color: var(--page-download-card-bg); /* Tối cho nền tối */
  color: var(--page-download-text-main);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--page-download-border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-download__step-card .page-download__card-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--page-download-accent-color);
}

.page-download__step-card p {
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.page-download__step-card img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-top: auto;
  margin-bottom: 20px;
  display: block;
}

.page-download__app-previews {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.page-download__app-previews img {
  width: 100%;
  max-width: 200px;
  height: auto;
  object-fit: contain;
  border: 1px solid var(--page-download-border-color);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* FAQ Section */
.page-download__faq-section .page-download__section-title {
  color: var(--page-download-primary-color);
}

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

details.page-download__faq-item {
  margin-bottom: 15px;
  border-radius: 12px;
  border: 1px solid #e0e0e0;
  overflow: hidden;
  background: #ffffff;
  color: #333333;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

details.page-download__faq-item summary.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}

details.page-download__faq-item summary.page-download__faq-question::-webkit-details-marker {
  display: none;
}

details.page-download__faq-item summary.page-download__faq-question:hover {
  background: #f5f5f5;
}

.page-download__faq-qtext {
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--page-download-primary-color);
}

.page-download__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: var(--page-download-primary-color);
  flex-shrink: 0;
  margin-left: 15px;
  width: 30px;
  text-align: center;
  transition: transform 0.3s ease;
}

details.page-download__faq-item[open] .page-download__faq-toggle {
  transform: rotate(45deg);
}

details.page-download__faq-item .page-download__faq-answer {
  padding: 0 25px 25px;
  background: #f9f9f9;
  border-radius: 0 0 12px 12px;
}

details.page-download__faq-item .page-download__faq-answer p {
  font-size: 16px;
  line-height: 1.7;
  color: #555555;
}

/* CTA Bottom Section */
.page-download__cta-bottom {
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-download__cta-bottom .page-download__section-title {
  color: var(--page-download-accent-color);
}

.page-download__cta-bottom .page-download__description {
  font-size: 20px;
  margin-bottom: 40px;
  color: var(--page-download-text-main);
}

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

/* Media Queries for Responsiveness */
@media (max-width: 1024px) {
  .page-download__section {
    padding: 40px 0;
  }

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

  .page-download__text-block {
    font-size: 16px;
    margin-bottom: 30px;
  }

  .page-download__hero-content {
    margin-top: 30px;
  }

  .page-download__main-title {
    font-size: clamp(28px, 4.5vw, 42px);
  }

  .page-download__description {
    font-size: clamp(15px, 1.8vw, 18px);
  }

  .page-download__btn-primary,
  .page-download__btn-secondary {
    padding: 12px 25px;
    font-size: 16px;
  }

  .page-download__features-grid,
  .page-download__download-steps {
    gap: 20px;
  }

  .page-download__feature-card .page-download__card-title,
  .page-download__step-card .page-download__card-title {
    font-size: 22px;
  }

  details.page-download__faq-item summary.page-download__faq-question {
    padding: 15px 20px;
  }

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

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

  details.page-download__faq-item .page-download__faq-answer {
    padding: 0 20px 20px;
  }

  .page-download__cta-bottom {
    padding-top: 60px;
    padding-bottom: 60px;
  }

  .page-download__cta-bottom .page-download__description {
    font-size: 18px;
  }
}

@media (max-width: 768px) {
  .page-download__container {
    padding: 0 15px !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-download__section {
    padding: 30px 0 !important;
  }

  .page-download__section-title {
    font-size: 26px !important;
    margin-bottom: 25px !important;
  }

  .page-download__text-block {
    font-size: 15px !important;
    margin-bottom: 25px !important;
  }

  /* HERO 主图区域 */
  .page-download__hero-section {
    padding-top: 10px !important; /* Small top padding */
    padding-bottom: 40px !important;
  }

  .page-download__hero-image img {
    object-fit: contain !important; /* 禁止 cover 裁切两侧 */
    aspect-ratio: unset !important;
    height: auto !important;
  }

  .page-download__hero-content {
    margin-top: 20px !important;
    padding: 0 15px !important;
  }

  .page-download__main-title {
    font-size: clamp(24px, 8vw, 36px) !important;
  }

  .page-download__description {
    font-size: 15px !important;
    margin-bottom: 25px !important;
  }

  /* 按钮与按钮容器 */
  .page-download__cta-buttons {
    flex-direction: column !important; /* 移动端垂直排列 */
    gap: 15px !important;
    max-width: 100% !important;
    width: 100% !important;
    padding: 0 15px;
    box-sizing: border-box !important;
  }

  .page-download__btn-primary,
  .page-download__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    font-size: 16px !important;
    padding: 12px 15px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    box-sizing: border-box !important;
  }

  /* 通用图片与容器 */
  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
  }

  .page-download__section,
  .page-download__card,
  .page-download__container,
  .page-download__feature-card,
  .page-download__step-card {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  
  /* 产品展示图区域 (features-grid) */
  .page-download__features-grid {
    grid-template-columns: 1fr !important; /* Đảm bảo 1 cột trên di động */
    gap: 20px !important;
    overflow-x: hidden;
  }

  .page-download__feature-card {
    padding: 25px !important;
  }

  .page-download__feature-card .page-download__card-title {
    font-size: 20px !important;
  }

  .page-download__feature-card p {
    font-size: 15px !important;
  }

  /* Hướng dẫn tải ứng dụng */
  .page-download__download-steps {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }

  .page-download__step-card {
    padding: 25px !important;
  }

  .page-download__step-card .page-download__card-title {
    font-size: 20px !important;
  }

  .page-download__app-previews {
    flex-direction: column !important;
    align-items: center;
    gap: 15px !important;
  }

  .page-download__app-previews img {
    
    width: 100% !important;
  }

  /* FAQ */
  details.page-download__faq-item {
    border-radius: 8px !important;
  }

  details.page-download__faq-item summary.page-download__faq-question {
    padding: 15px !important;
  }

  .page-download__faq-qtext {
    font-size: 15px !important;
  }

  .page-download__faq-toggle {
    font-size: 22px !important;
    width: 25px !important;
  }

  details.page-download__faq-item .page-download__faq-answer {
    padding: 0 15px 15px !important;
  }

  details.page-download__faq-item .page-download__faq-answer p {
    font-size: 15px !important;
  }

  /* CTA Bottom */
  .page-download__cta-bottom {
    padding-top: 40px !important;
    padding-bottom: 40px !important;
  }

  .page-download__cta-bottom .page-download__description {
    font-size: 16px !important;
  }
}