/* style/download.css */

/* Biến màu sắc */
:root {
  --k8-primary-color: #017439;
  --k8-secondary-color: #FFFFFF;
  --k8-register-btn-color: #C30808;
  --k8-login-btn-color: #C30808;
  --k8-btn-text-color: #FFFF00;
  --k8-background-color: #FFFFFF;
  --k8-text-dark: #333333;
  --k8-text-light: #ffffff;
}

.page-download {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--k8-text-dark);
  background-color: var(--k8-background-color);
}

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

/* Sections */
.page-download__hero-section,
.page-download__why-k8,
.page-download__app-features,
.page-download__cta-bottom {
  padding: 80px 0;
  text-align: center;
}

.page-download__video-section,
.page-download__how-to-download,
.page-download__faq-section {
  padding: 80px 0;
  text-align: center;
}

/* Color Schemes for Sections */
.page-download__dark-bg {
  background-color: var(--k8-primary-color);
  color: var(--k8-text-light);
}

.page-download__light-bg {
  background-color: var(--k8-background-color);
  color: var(--k8-text-dark);
}

/* Hero Section */
.page-download__hero-section {
  padding-top: calc(var(--header-offset, 120px) + 60px);
}

.page-download__hero-title {
  font-size: 3.2em;
  margin-bottom: 20px;
  line-height: 1.2;
  color: var(--k8-text-light);
}

.page-download__hero-description {
  font-size: 1.2em;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: var(--k8-text-light);
}

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

.page-download__btn-primary,
.page-download__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: background-color 0.3s ease, color 0.3s ease;
  border: 2px solid transparent;
}

.page-download__btn-primary {
  background-color: var(--k8-register-btn-color);
  color: var(--k8-btn-text-color);
  border-color: var(--k8-register-btn-color);
}

.page-download__btn-primary:hover {
  background-color: darken(var(--k8-register-btn-color), 10%);
  border-color: darken(var(--k8-register-btn-color), 10%);
}

.page-download__btn-secondary {
  background-color: var(--k8-secondary-color);
  color: var(--k8-primary-color);
  border-color: var(--k8-primary-color);
}

.page-download__btn-secondary:hover {
  background-color: darken(var(--k8-secondary-color), 5%);
  border-color: darken(var(--k8-primary-color), 10%);
}

.page-download__qr-code-section {
  margin-top: 40px;
}

.page-download__qr-code {
  max-width: 300px;
  height: auto;
  border: 5px solid var(--k8-secondary-color);
  border-radius: 10px;
}

.page-download__qr-code-text {
  margin-top: 15px;
  font-size: 1.1em;
  color: var(--k8-text-light);
}

/* Video Section */
.page-download__section-title {
  font-size: 2.5em;
  margin-bottom: 20px;
  color: inherit;
}

.page-download__section-description {
  font-size: 1.1em;
  margin-bottom: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  color: inherit;
}

.page-download__video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  max-width: 100%;
  background: #000;
  margin: 0 auto 30px;
  border-radius: 10px;
}

.page-download__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  cursor: pointer;
}

.page-download__video-caption {
  font-size: 1em;
  margin-top: 10px;
  color: inherit;
}

.page-download__video-cta {
  margin-top: 30px;
}

/* Why K8 Section */
.page-download__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-download__feature-card {
  background-color: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  transition: transform 0.3s ease;
  color: var(--k8-text-light);
}

.page-download__feature-card:hover {
  transform: translateY(-10px);
}

.page-download__feature-icon {
  width: 200px;
  height: 200px;
  margin-bottom: 20px;
  object-fit: contain;
}

.page-download__feature-title {
  font-size: 1.8em;
  margin-bottom: 15px;
  color: var(--k8-text-light);
}

.page-download__feature-text {
  font-size: 1em;
  color: var(--k8-text-light);
}

/* How to Download Section */
.page-download__download-steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 50px;
}

.page-download__step-card {
  background-color: var(--k8-secondary-color);
  padding: 30px;
  border-radius: 10px;
  text-align: left;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  color: var(--k8-text-dark);
}

.page-download__step-title {
  font-size: 2em;
  margin-bottom: 20px;
  color: var(--k8-primary-color);
}

.page-download__step-list {
  list-style: none;
  padding: 0;
  margin-bottom: 30px;
}

.page-download__step-list li {
  margin-bottom: 15px;
  font-size: 1.1em;
  counter-increment: step-counter;
  position: relative;
  padding-left: 30px;
}

.page-download__step-list li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0;
  background-color: var(--k8-primary-color);
  color: var(--k8-text-light);
  border-radius: 50%;
  width: 25px;
  height: 25px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 0.9em;
  font-weight: bold;
}

.page-download__step-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-top: 20px;
  border: 1px solid #e0e0e0;
}

/* App Features Section */
.page-download__features-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
  margin-top: 50px;
  text-align: left;
}

.page-download__feature-item {
  background-color: rgba(255, 255, 255, 0.15);
  padding: 25px;
  border-radius: 8px;
  color: var(--k8-text-light);
}

.page-download__feature-item-title {
  font-size: 1.6em;
  margin-bottom: 10px;
  color: var(--k8-text-light);
}

.page-download__feature-item-text {
  font-size: 1em;
  color: var(--k8-text-light);
}

/* FAQ Section */
.page-download__faq-list {
  max-width: 900px;
  margin: 50px auto 0;
  text-align: left;
}

.page-download__faq-item {
  background-color: var(--k8-secondary-color);
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  color: var(--k8-text-dark);
}

.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  cursor: pointer;
  background-color: var(--k8-secondary-color);
  border-bottom: 1px solid #eee;
  transition: background-color 0.3s ease;
}

.page-download__faq-question:hover {
  background-color: #f5f5f5;
}

.page-download__faq-title {
  font-size: 1.2em;
  margin: 0;
  color: var(--k8-text-dark);
}

.page-download__faq-toggle {
  font-size: 1.8em;
  font-weight: bold;
  color: var(--k8-primary-color);
  transition: transform 0.3s ease;
}

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

.page-download__faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 25px;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: var(--k8-text-dark);
}

.page-download__faq-item.active .page-download__faq-answer {
  max-height: 1000px !important; /* Ensure enough height for content */
  padding: 15px 25px;
}

.page-download__faq-text {
  margin: 0;
  font-size: 1em;
}

/* Bottom CTA */
.page-download__cta-bottom .page-download__section-title,
.page-download__cta-bottom .page-download__section-description {
  color: var(--k8-text-light);
}

.page-download__cta-bottom .page-download__btn-primary {
  margin-top: 30px;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-download__hero-title {
    font-size: 2.8em;
  }
  .page-download__section-title {
    font-size: 2em;
  }
  .page-download__download-steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .page-download {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-download__hero-section,
  .page-download__why-k8,
  .page-download__app-features,
  .page-download__cta-bottom,
  .page-download__video-section,
  .page-download__how-to-download,
  .page-download__faq-section {
    padding: 40px 0;
  }

  .page-download__hero-section {
    padding-top: var(--header-offset, 120px) !important; /* Ensure header offset on mobile */
  }

  .page-download__hero-title {
    font-size: 2.2em;
  }

  .page-download__hero-description {
    font-size: 1em;
  }

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

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

  .page-download__section-title {
    font-size: 1.8em;
  }

  .page-download__section-description {
    font-size: 0.95em;
  }

  .page-download__video-wrapper {
    margin: 0 15px 30px;
    max-width: calc(100% - 30px) !important;
    width: calc(100% - 30px) !important;
    box-sizing: border-box !important;
  }

  .page-download__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

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

  .page-download__feature-icon {
    width: 150px;
    height: 150px;
  }

  .page-download__feature-title {
    font-size: 1.5em;
  }

  .page-download__step-card {
    padding: 20px;
  }

  .page-download__step-title {
    font-size: 1.6em;
  }

  .page-download__step-list li {
    font-size: 1em;
  }

  .page-download__step-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

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

  .page-download__faq-title {
    font-size: 1.1em;
  }

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

  .page-download__faq-item.active .page-download__faq-answer {
    padding: 15px 20px;
  }

  /* Ensure all content containers are responsive */
  .page-download__section,
  .page-download__card,
  .page-download__container,
  .page-download__download-steps,
  .page-download__features-grid,
  .page-download__features-list,
  .page-download__faq-list {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-download__qr-code-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-download__qr-code {
    width: 200px;
    height: 200px;
  }

  /* Image responsiveness for all img tags within .page-download */
  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  /* Content area images CSS dimensions lower bound */
  /* Any selector targeting img within .page-download must ensure display size >= 200px */
  /* This is handled by max-width: 100%; height: auto; on larger images, ensuring they scale down without going below 200px if original is larger */
  /* For images that might be smaller, their original HTML width/height attributes should be >= 200px */
}

@media (max-width: 480px) {
  .page-download__hero-title {
    font-size: 1.8em;
  }
  .page-download__section-title {
    font-size: 1.6em;
  }
  .page-download__btn-primary,
  .page-download__btn-secondary {
    font-size: 1em;
    padding: 10px 15px;
  }
  .page-download__feature-title {
    font-size: 1.3em;
  }
  .page-download__step-title {
    font-size: 1.4em;
  }
  .page-download__faq-title {
    font-size: 1em;
  }
}