.page-download {
  --bg-color-main: #08160F;
  --bg-color-card: #11271B;
  --text-color-main: #F2FFF6;
  --text-color-secondary: #A7D9B8;
  --btn-bg-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --border-color: #2E7A4E;
  --glow-color: #57E38D;
  --gold-color: #F2C14E;
  --divider-color: #1E3A2A;
  --deep-green-color: #0A4B2C;
}

.page-download {
  background-color: var(--bg-color-main);
  color: var(--text-color-main);
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
}

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

.page-download__light-bg {
  background-color: #f0f0f0; /* Sử dụng màu sáng hơn để tạo độ tương phản */
  color: #333333;
}

.page-download__section-title {
  font-size: clamp(28px, 4vw, 48px);
  color: var(--gold-color);
  text-align: center;
  margin-bottom: 20px;
  font-weight: 700;
  line-height: 1.2;
}

.page-download__section-description {
  font-size: 18px;
  color: var(--text-color-secondary);
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px auto;
}

.page-download__hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 20px 60px 20px; /* body đã có padding-top, đây chỉ là khoảng cách phụ */
  position: relative;
  overflow: hidden;
}

.page-download__hero-image-wrapper {
  width: 100%;
  max-width: 1920px;
  margin-bottom: 30px;
}

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

.page-download__hero-content {
  text-align: center;
  max-width: 900px;
  padding: 0 20px;
}

.page-download__main-title {
  font-size: clamp(32px, 5vw, 58px);
  color: var(--gold-color);
  margin-bottom: 20px;
  font-weight: 800;
  line-height: 1.2;
}

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

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

.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: 700;
  text-decoration: none;
  transition: all 0.3s ease;
  min-width: 180px;
  box-sizing: border-box;
}

.page-download__btn-primary {
  background: var(--btn-bg-gradient);
  color: var(--text-color-main);
  border: 2px solid transparent;
}

.page-download__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(87, 227, 141, 0.4);
}

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

.page-download__btn-secondary:hover {
  background-color: var(--gold-color);
  color: var(--bg-color-main);
  transform: translateY(-3px);
}

.page-download__why-download-section,
.page-download__how-to-download-section,
.page-download__app-features-section,
.page-download__security-section,
.page-download__promotions-section,
.page-download__faq-section,
.page-download__cta-bottom-section {
  padding: 80px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

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

.page-download__card {
  background-color: var(--bg-color-card);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  color: var(--text-color-main);
}

.page-download__card-image {
  width: 100%;
  height: 250px;
  object-fit: contain;
  margin-bottom: 20px;
  border-radius: 8px;
  min-width: 200px;
  min-height: 200px;
}

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

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

.page-download__qr-code-section {
  text-align: center;
  margin-top: 60px;
  padding: 30px;
  background-color: var(--bg-color-card);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.page-download__qr-image {
  width: 250px;
  height: 250px;
  object-fit: contain;
  margin-bottom: 20px;
  min-width: 200px;
  min-height: 200px;
}

.page-download__qr-text {
  font-size: 18px;
  color: var(--text-color-main);
  font-weight: 600;
}

.page-download__features-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin-top: 40px;
  text-align: left;
}

.page-download__feature-item {
  background-color: var(--bg-color-card);
  padding: 25px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
}

.page-download__feature-heading {
  font-size: 22px;
  color: var(--gold-color);
  margin-bottom: 10px;
  font-weight: 700;
}

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

.page-download__app-screenshot {
  width: 100%;
  height: auto;
  display: block;
  margin-top: 50px;
  border-radius: 15px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  border: 2px solid var(--border-color);
  min-width: 200px;
  min-height: 200px;
}

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

.page-download__security-item {
  background-color: var(--bg-color-card);
  padding: 25px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  color: var(--text-color-main);
}

.page-download__security-heading {
  font-size: 22px;
  color: var(--gold-color);
  margin-bottom: 10px;
  font-weight: 700;
}

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

.page-download__security-image {
  width: 100%;
  max-width: 800px;
  height: auto;
  display: block;
  margin: 50px auto 0 auto;
  border-radius: 15px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  border: 2px solid var(--border-color);
  min-width: 200px;
  min-height: 200px;
}

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

.page-download__promo-card {
  background-color: var(--bg-color-card);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  color: var(--text-color-main);
}

.page-download__view-all-promos {
  margin-top: 40px;
  display: block;
  text-align: center;
}

.page-download__promo-image {
  width: 100%;
  height: auto;
  display: block;
  margin-top: 50px;
  border-radius: 15px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  border: 2px solid var(--border-color);
  min-width: 200px;
  min-height: 200px;
}

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

.page-download__faq-item {
  background-color: var(--bg-color-card);
  margin-bottom: 15px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  color: var(--text-color-main);
}

.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 20px;
  font-weight: 600;
  color: var(--gold-color);
  cursor: pointer;
  list-style: none; /* For details tag */
}

.page-download__faq-question::-webkit-details-marker {
  display: none; /* For details tag */
}

.page-download__faq-toggle {
  font-size: 24px;
  line-height: 1;
  transition: transform 0.3s ease;
}

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

.page-download__faq-answer {
  padding: 0 25px 20px 25px;
  font-size: 16px;
  color: var(--text-color-secondary);
}

.page-download__cta-bottom-section {
  text-align: center;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
  .page-download__hero-section {
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-download__main-title {
    font-size: clamp(28px, 8vw, 48px);
  }

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

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

  .page-download__btn-primary,
  .page-download__btn-secondary {
    max-width: 100% !important;
    width: 100% !important;
    padding: 12px 20px;
    font-size: 16px;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-download__section-title {
    font-size: clamp(24px, 6vw, 36px);
  }

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

  .page-download__why-download-section,
  .page-download__how-to-download-section,
  .page-download__app-features-section,
  .page-download__security-section,
  .page-download__promotions-section,
  .page-download__faq-section,
  .page-download__cta-bottom-section {
    padding: 40px 15px;
  }

  .page-download__features-grid,
  .page-download__download-steps-grid,
  .page-download__features-list,
  .page-download__security-points,
  .page-download__promo-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-download__card-image,
  .page-download__qr-image,
  .page-download__app-screenshot,
  .page-download__security-image,
  .page-download__promo-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    min-width: unset;
    min-height: unset;
  }

  .page-download__card,
  .page-download__feature-item,
  .page-download__security-item,
  .page-download__promo-card,
  .page-download__faq-item,
  .page-download__qr-code-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 20px;
  }

  .page-download__faq-question {
    font-size: 18px;
    padding: 15px 20px;
  }

  .page-download__faq-answer {
    padding: 0 20px 15px 20px;
  }
  
  .page-download__video-section {
    padding-top: 10px !important; /* body đã承担 --header-offset，此处禁止 var(--header-offset) */
  }
  
  .page-download__video-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }
}

/* Ensure content images are not smaller than 200px in CSS */
.page-download img:not(.page-download__hero-image) {
  min-width: 200px;
  min-height: 200px;
}

.page-download__hero-image {
  min-width: 300px;
  min-height: 200px;
}

/* For light-bg sections, ensure text is dark */
.page-download__light-bg .page-download__section-title,
.page-download__light-bg .page-download__section-description,
.page-download__light-bg .page-download__card-title,
.page-download__light-bg .page-download__card-text,
.page-download__light-bg .page-download__qr-text,
.page-download__light-bg .page-download__feature-heading,
.page-download__light-bg .page-download__feature-text,
.page-download__light-bg .page-download__security-heading,
.page-download__light-bg .page-download__security-text,
.page-download__light-bg .page-download__promo-card .page-download__card-title,
.page-download__light-bg .page-download__promo-card .page-download__card-text,
.page-download__light-bg .page-download__faq-question,
.page-download__light-bg .page-download__faq-answer {
  color: #333333;
}

.page-download__light-bg .page-download__card {
  background-color: #ffffff;
  border-color: #e0e0e0;
}

.page-download__light-bg .page-download__faq-item {
  background-color: #ffffff;
  border-color: #e0e0e0;
}

.page-download__light-bg .page-download__faq-question {
  color: #11A84E; /* Sử dụng màu thương hiệu cho tiêu đề FAQ */
}