/* style/download.css */
/* body đã padding-top: var(--header-offset) từ shared.css, không cần lặp lại ở đây */

.page-download {
  color: #ffffff; /* Text color for dark body background */
  background-color: transparent; /* Body handles the background */
}

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

.page-download__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 10px; /* Small top padding, body handles header offset */
  padding-bottom: 60px;
  text-align: center;
  overflow: hidden;
  background: #1a1a2e; /* Inherit from body or a slightly darker variant */
}

.page-download__hero-image-wrapper {
  width: 100%;
  max-height: 700px; /* Limit image height */
  overflow: hidden;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 0;
}

.page-download__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  filter: brightness(0.4); /* Darken image for text readability, not color change */
}

.page-download__hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  padding: 80px 20px;
  box-sizing: border-box;
  background: rgba(0, 0, 0, 0.4); /* Semi-transparent overlay for text */
  border-radius: 10px;
}

.page-download__main-title {
  font-size: clamp(2.2rem, 4vw, 3rem); /* Responsive font size */
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #ffffff;
}

.page-download__description {
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 30px;
  color: #f0f0f0;
}

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

.page-download__btn-primary,
.page-download__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.1rem;
  transition: background-color 0.3s ease, transform 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-download__btn-primary {
  background-color: #26A9E0;
  color: #ffffff;
  border: 2px solid #26A9E0;
}

.page-download__btn-primary:hover {
  background-color: #1e87c0;
  transform: translateY(-2px);
}

.page-download__btn-secondary {
  background-color: #ffffff;
  color: #26A9E0;
  border: 2px solid #26A9E0;
}

.page-download__btn-secondary:hover {
  background-color: #f0f0f0;
  transform: translateY(-2px);
}

.page-download__section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
  line-height: 1.3;
}

.page-download__sub-title {
  font-size: clamp(1.4rem, 2.8vw, 2rem);
  font-weight: 600;
  margin-bottom: 20px;
  line-height: 1.4;
}

.page-download__text-block {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 20px;
  text-align: justify;
}

.page-download__introduction-section {
  padding: 60px 0;
  background-color: #f0f0f0; /* Light background for contrast */
  color: #333333; /* Dark text for light background */
}

.page-download__introduction-section .page-download__section-title,
.page-download__introduction-section .page-download__text-block {
  color: #333333;
}

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

.page-download__feature-item {
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  text-align: center;
  background-color: #ffffff; /* White card for contrast */
  color: #333333;
}

.page-download__feature-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: #26A9E0;
}

.page-download__feature-description {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #555555;
}

.page-download__dark-section {
  background-color: #1a1a2e; /* Dark background */
  color: #ffffff; /* White text */
}

.page-download__guide-section {
  padding: 60px 0;
}

.page-download__guide-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 50px;
  margin-top: 40px;
}

.page-download__guide-platform {
  background-color: rgba(255, 255, 255, 0.08); /* Slightly lighter dark card */
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-download__platform-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 30px;
  color: #26A9E0;
}

.page-download__step-item {
  margin-bottom: 30px;
  text-align: center;
}

.page-download__step-item:last-child {
  margin-bottom: 0;
}

.page-download__step-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 20px;
  display: block; /* Ensure it behaves as a block element */
  margin-left: auto;
  margin-right: auto;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.page-download__step-item h4 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: #ffffff;
}

.page-download__step-item p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #f0f0f0;
}

.page-download__important-notes {
  margin-top: 50px;
  padding: 30px;
  background-color: rgba(38, 169, 224, 0.2); /* Semi-transparent brand color */
  border-left: 5px solid #26A9E0;
  border-radius: 8px;
  color: #ffffff;
}

.page-download__important-notes ul {
  list-style: none;
  padding-left: 0;
}

.page-download__important-notes li {
  margin-bottom: 10px;
  font-size: 1rem;
  line-height: 1.6;
  position: relative;
  padding-left: 25px;
}

.page-download__important-notes li::before {
  content: '⚠️'; /* Warning emoji */
  position: absolute;
  left: 0;
  color: #ffcc00;
}

.page-download__features-overview {
  padding: 60px 0;
  background-color: #f0f0f0;
  color: #333333;
}

.page-download__features-overview .page-download__section-title,
.page-download__features-overview .page-download__text-block {
  color: #333333;
}

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

.page-download__feature-card {
  background-color: #ffffff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  text-align: center;
  color: #333333;
}

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

.page-download__feature-heading {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 15px;
  color: #26A9E0;
}

.page-download__feature-card p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #555555;
}

.page-download__faq-section {
  padding: 60px 0;
}

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

.page-download__faq-item {
  background-color: rgba(255, 255, 255, 0.08);
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  font-size: 1.1rem;
  font-weight: 600;
  color: #ffffff;
  cursor: pointer;
  background-color: rgba(38, 169, 224, 0.15); /* Slightly darker brand color for question */
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.page-download__faq-question:hover {
  background-color: rgba(38, 169, 224, 0.25);
}

.page-download__faq-item[open] .page-download__faq-question {
  background-color: #26A9E0;
  color: #ffffff;
}

.page-download__faq-toggle {
  font-size: 1.5rem;
  line-height: 1;
  margin-left: 15px;
  transition: transform 0.3s ease;
}

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

.page-download__faq-answer {
  padding: 20px;
  font-size: 1rem;
  line-height: 1.6;
  color: #f0f0f0;
  background-color: rgba(255, 255, 255, 0.05);
}

.page-download__faq-answer p {
  margin-bottom: 0;
}

.page-download__cta-section {
  padding: 80px 0;
  text-align: center;
  background-color: #f0f0f0;
  color: #333333;
}

.page-download__cta-section .page-download__section-title,
.page-download__cta-section .page-download__text-block {
  color: #333333;
}

.page-download__btn-large {
  padding: 18px 40px;
  font-size: 1.2rem;
  margin-top: 40px;
}

/* Responsive adjustments */
@media (max-width: 992px) {
  .page-download__hero-content {
    padding: 60px 20px;
  }
  .page-download__main-title {
    font-size: clamp(2rem, 5vw, 2.8rem);
  }
  .page-download__description {
    font-size: 1rem;
  }
  .page-download__platform-title {
    font-size: 1.8rem;
  }
}

@media (max-width: 768px) {
  .page-download__container {
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-download__hero-section {
    padding-top: 10px !important; /* Body handles header offset, small decorative padding */
    padding-bottom: 40px;
  }
  .page-download__hero-content {
    padding: 40px 15px;
  }
  .page-download__main-title {
    font-size: clamp(1.8rem, 6vw, 2.5rem);
  }
  .page-download__description {
    font-size: 0.95rem;
  }
  .page-download__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-download__btn-primary,
  .page-download__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-download__section-title {
    font-size: clamp(1.5rem, 5vw, 2.2rem);
    margin-bottom: 30px;
  }
  .page-download__sub-title {
    font-size: clamp(1.2rem, 4vw, 1.8rem);
  }
  .page-download__text-block {
    font-size: 0.95rem;
  }

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

  .page-download__feature-item,
  .page-download__feature-card {
    padding: 20px;
  }
  .page-download__feature-title,
  .page-download__feature-heading {
    font-size: 1.3rem;
  }

  .page-download__guide-platform {
    padding: 20px;
  }
  .page-download__platform-title {
    font-size: 1.6rem;
  }
  .page-download__step-item h4 {
    font-size: 1.2rem;
  }

  .page-download__important-notes {
    margin-top: 30px;
    padding: 20px;
  }

  .page-download__faq-question {
    font-size: 1rem;
    padding: 15px;
  }
  .page-download__faq-answer {
    padding: 15px;
    font-size: 0.95rem;
  }

  .page-download__cta-section {
    padding: 60px 0;
  }
  .page-download__btn-large {
    padding: 15px 30px;
    font-size: 1.1rem;
    margin-top: 30px;
  }

  /* Mobile image and video responsive */
  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-download__section,
  .page-download__card,
  .page-download__container,
  .page-download__hero-section,
  .page-download__introduction-section,
  .page-download__guide-section,
  .page-download__features-overview,
  .page-download__faq-section,
  .page-download__cta-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-download video,
  .page-download__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-download__video-section,
  .page-download__video-container,
  .page-download__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }
  .page-download__cta-button,
  .page-download__btn-primary,
  .page-download__btn-secondary,
  .page-download a[class*="button"],
  .page-download 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-download__cta-buttons,
  .page-download__button-group,
  .page-download__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-download__cta-buttons {
    flex-direction: column;
  }

  details summary::-webkit-details-marker {
    display: none;
  }
}

@media (min-width: 769px) {
  .page-download__guide-steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .page-download__hero-content {
    padding: 100px 50px;
  }
  .page-download__platform-title {
    font-size: 2.2rem;
  }
}

/* CSS for details/summary compatibility */
.page-download__faq-item summary {
  list-style: none;
}
.page-download__faq-item summary::-webkit-details-marker {
  display: none;
}