/* style/download.css */
/* body đã padding-top: var(--header-offset) từ shared.css, trang này không cần thêm */

:root {
  --primary-color: #2F6BFF;
  --secondary-color: #6FA3FF;
  --text-main-color: #1F2D3D;
  --text-dark-color: #000000;
  --card-bg-color: #FFFFFF;
  --page-bg-color: #F4F7FB;
  --border-color: #D6E2FF;
  --glow-color: #A5C4FF;
  --button-gradient: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
}

.page-download {
  font-family: Arial, sans-serif;
  color: var(--text-main-color); /* Body background is light, so text is dark */
  background-color: var(--page-bg-color);
  line-height: 1.6;
}

.page-download__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 20px 60px 20px; /* Small top padding, relying on body for header offset */
  background-color: var(--primary-color);
  color: #ffffff;
  text-align: center;
}

.page-download__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
  margin-bottom: 20px;
}

.page-download__hero-image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.page-download__hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.page-download__main-title {
  font-size: 2.8em;
  font-weight: 700;
  margin-bottom: 15px;
  line-height: 1.2;
  color: #ffffff;
}

.page-download__description {
  font-size: 1.1em;
  margin-bottom: 30px;
  color: rgba(255, 255, 255, 0.9);
}

.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: 1.1em;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-download__btn-primary {
  background: var(--button-gradient);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-download__btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

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

.page-download__btn-secondary:hover {
  background-color: var(--primary-color);
  color: #ffffff;
}

.page-download__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  box-sizing: border-box;
}

.page-download__section-title {
  font-size: 2.2em;
  font-weight: 700;
  color: var(--text-dark-color);
  text-align: center;
  margin-bottom: 40px;
}

.page-download__features-section {
  background-color: var(--page-bg-color);
  padding: 60px 0;
}

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

.page-download__feature-card {
  background-color: var(--card-bg-color);
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  text-align: center;
  transition: transform 0.3s ease;
  color: var(--text-main-color);
}

.page-download__feature-card:hover {
  transform: translateY(-5px);
}

.page-download__feature-title {
  font-size: 1.4em;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 15px;
}

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

.page-download__download-guide-section {
  background-color: #f8f9fa;
  padding: 60px 0;
}

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

.page-download__guide-platform {
  background-color: var(--card-bg-color);
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  text-align: center;
  color: var(--text-main-color);
}

.page-download__platform-title {
  font-size: 1.8em;
  font-weight: 700;
  color: var(--text-dark-color);
  margin-bottom: 25px;
}

.page-download__qr-code-wrapper {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
  margin: 0 auto 25px auto;
}

.page-download__qr-code-image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border: 5px solid var(--border-color);
  border-radius: 10px;
}

.page-download__platform-instruction {
  font-size: 1.05em;
  margin-bottom: 10px;
  text-align: left;
  padding-left: 20px;
  position: relative;
}

.page-download__platform-instruction::before {
  content: '✓';
  color: var(--primary-color);
  font-weight: bold;
  position: absolute;
  left: 0;
}

.page-download__btn-platform {
  margin-top: 20px;
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}

.page-download__app-preview-section {
  background-color: var(--page-bg-color);
  padding: 60px 0;
}

.page-download__app-preview-image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 10px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-download__faq-section {
  background-color: #f8f9fa;
  padding: 60px 0;
}

.page-download__faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.page-download__faq-item {
  background-color: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
  color: var(--text-main-color);
}

.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.15em;
  font-weight: 600;
  color: var(--text-dark-color);
  cursor: pointer;
  background-color: var(--card-bg-color);
  transition: background-color 0.3s ease;
}

.page-download__faq-question:hover {
  background-color: #f0f0f0;
}

.page-download__faq-toggle {
  font-size: 1.5em;
  font-weight: bold;
  color: var(--primary-color);
}

.page-download__faq-item[open] .page-download__faq-question {
  background-color: #e6f0ff;
}

.page-download__faq-item[open] .page-download__faq-toggle {
  content: '−';
}

.page-download__faq-answer {
  padding: 0 25px 20px 25px;
  font-size: 1em;
  color: var(--text-main-color);
}

/* Responsive Styles */
@media (max-width: 992px) {
  .page-download__main-title {
    font-size: 2.2em;
  }
  .page-download__section-title {
    font-size: 1.8em;
  }
}

@media (max-width: 768px) {
  .page-download__hero-section {
    padding: 10px 15px 40px 15px;
  }

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

  .page-download__description {
    font-size: 1em;
  }

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

  .page-download__btn-primary,
  .page-download__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 1em;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-download__container {
    padding: 20px 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-download__section-title {
    font-size: 1.6em;
    margin-bottom: 30px;
  }

  .page-download__features-grid,
  .page-download__guide-content {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .page-download__feature-card,
  .page-download__guide-platform {
    padding: 25px;
  }

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

  .page-download__qr-code-image {
    max-width: 80% !important;
  }

  .page-download__platform-instruction {
    font-size: 0.95em;
    padding-left: 15px;
  }

  .page-download__faq-question {
    font-size: 1em;
    padding: 15px 20px;
  }

  .page-download__faq-answer {
    padding: 0 20px 15px 20px;
  }

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

  .page-download__hero-image-wrapper,
  .page-download__qr-code-wrapper,
  .page-download__app-preview-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
    padding-left: 15px;
    padding-right: 15px;
  }
}

@media (max-width: 480px) {
  .page-download__main-title {
    font-size: 1.5em;
  }
  .page-download__section-title {
    font-size: 1.4em;
  }
  .page-download__qr-code-image {
    max-width: 90% !important;
  }
}