/* style/download.css */
:root {
  --primary-color: #FFD700; /* Vàng kim */
  --secondary-color: #8B0000; /* Đỏ rượu */
  --dark-text-color: #333333;
  --light-text-color: #ffffff;
  --card-bg-light: #ffffff;
  --card-bg-dark: rgba(255, 255, 255, 0.1);
  --section-bg-dark: #0d0d0d; /* Slightly lighter than pure black for sections */
  --section-bg-light: #f0f0f0;
}

.page-download {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--light-text-color); /* Default text color for dark body background */
  background-color: #000; /* Body background is black */
}

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

/* Fixed header spacing */
.page-download__hero-section {
  position: relative;
  padding-top: 120px; /* Desktop: Adjust for fixed header */
  padding-bottom: 60px;
  background-color: var(--section-bg-dark);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page-download__hero-title {
  font-size: 3.2em;
  color: var(--primary-color);
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-download__hero-description {
  font-size: 1.2em;
  max-width: 800px;
  margin: 0 auto 40px auto;
  color: var(--light-text-color);
}

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

.page-download__cta-button {
  display: inline-block;
  padding: 15px 40px;
  border-radius: 8px;
  font-size: 1.1em;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  border: none;
  cursor: pointer;
}

.page-download__cta-button--primary {
  background: var(--primary-color);
  color: var(--dark-text-color);
}

.page-download__cta-button--primary:hover {
  background: #e6c200;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

.page-download__cta-button--secondary {
  background: var(--secondary-color);
  color: var(--light-text-color);
  border: 2px solid var(--primary-color);
}

.page-download__cta-button--secondary:hover {
  background: #7a0000;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

.page-download__hero-image {
  max-width: 80%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-download__section-title {
  font-size: 2.5em;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 40px;
  padding-top: 40px;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.page-download__section-subtitle {
  font-size: 1.8em;
  color: var(--primary-color);
  text-align: center;
  margin-top: 40px;
  margin-bottom: 30px;
}

.page-download__intro-section {
  padding: 80px 0;
  background-color: var(--section-bg-dark);
  color: var(--light-text-color);
}

.page-download__intro-section p {
  font-size: 1.1em;
  margin-bottom: 20px;
  text-align: justify;
}

.page-download__benefits-section {
  padding: 80px 0;
  background-color: var(--section-bg-dark);
  color: var(--light-text-color);
}

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

.page-download__benefit-card {
  background: var(--card-bg-dark);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  color: var(--light-text-color);
}

.page-download__benefit-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-download__benefit-icon {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 5px var(--primary-color)); /* Safe filter for visual effect, not color change */
}

.page-download__card-title {
  font-size: 1.5em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-download__benefit-card p {
  font-size: 1em;
  color: #cccccc;
}

.page-download__guide-section {
  padding: 80px 0;
  background-color: var(--section-bg-light);
  color: var(--dark-text-color);
}

.page-download__guide-section .page-download__section-title, .page-download__guide-section .page-download__section-subtitle {
  color: var(--secondary-color);
  text-shadow: none;
}

.page-download__guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-download__guide-card {
  background: var(--card-bg-light);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  color: var(--dark-text-color);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-download__guide-image {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: 8px;
  margin-bottom: 25px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.page-download__guide-card h3 {
  color: var(--secondary-color);
  margin-bottom: 20px;
}

.page-download__guide-card ol {
  list-style: decimal;
  padding-left: 25px;
  margin-bottom: 30px;
  font-size: 1.05em;
}

.page-download__guide-card ol li {
  margin-bottom: 15px;
  line-height: 1.7;
}

.page-download__guide-card ol li strong {
  color: var(--primary-color);
}

.page-download__btn-primary {
  display: inline-block;
  padding: 12px 30px;
  background: var(--primary-color);
  color: var(--dark-text-color);
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
}

.page-download__btn-primary:hover {
  background: #e6c200;
  transform: translateY(-2px);
  box-shadow: 0 5px 12px rgba(0, 0, 0, 0.2);
}

.page-download__qr-code-section {
  margin-top: 60px;
  text-align: center;
  padding-top: 40px;
  border-top: 1px dashed #ccc;
}

.page-download__qr-codes {
  display: flex;
  justify-content: center;
  gap: 50px;
  margin-top: 30px;
  margin-bottom: 30px;
}

.page-download__qr-item {
  text-align: center;
}

.page-download__qr-image {
  width: 200px;
  height: 200px;
  border: 5px solid var(--primary-color);
  border-radius: 5px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.page-download__qr-item p {
  margin-top: 15px;
  font-weight: bold;
  color: var(--dark-text-color);
  font-size: 1.1em;
}

.page-download__qr-description {
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.05em;
  color: var(--dark-text-color);
}

.page-download__features-section {
  padding: 80px 0;
  background-color: var(--section-bg-dark);
  color: var(--light-text-color);
}

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

.page-download__feature-item {
  background: var(--card-bg-dark);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  color: var(--light-text-color);
}

.page-download__feature-title {
  font-size: 1.6em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-download__feature-item p {
  font-size: 1em;
  color: #cccccc;
  text-align: justify;
}

.page-download__security-section {
  padding: 80px 0;
  background-color: var(--section-bg-dark);
  color: var(--light-text-color);
}

.page-download__security-section p {
  font-size: 1.1em;
  margin-bottom: 20px;
  text-align: justify;
}

.page-download__tech-info-section {
  padding: 80px 0;
  background-color: var(--section-bg-light);
  color: var(--dark-text-color);
}

.page-download__tech-info-section .page-download__section-title {
  color: var(--secondary-color);
  text-shadow: none;
}

.page-download__tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-download__tech-item {
  background: var(--card-bg-light);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  color: var(--dark-text-color);
}

.page-download__tech-item h3 {
  color: var(--secondary-color);
  margin-bottom: 20px;
}

.page-download__tech-item ul {
  list-style: disc;
  padding-left: 25px;
  margin-bottom: 20px;
}

.page-download__tech-item ul li {
  margin-bottom: 10px;
  color: var(--dark-text-color);
}

.page-download__tech-item strong {
  color: var(--primary-color);
}

.page-download__faq-section {
  padding: 80px 0;
  background-color: var(--section-bg-light);
  color: var(--dark-text-color);
}

.page-download__faq-section .page-download__section-title {
  color: var(--secondary-color);
  text-shadow: none;
}

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

.page-download__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  overflow: hidden;
  border: 1px solid #e0e0e0;
}

.page-download__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
  padding: 0 15px;
  opacity: 0;
}

.page-download__faq-item.active .page-download__faq-answer {
  max-height: 2000px !important;
  padding: 20px 15px !important;
  opacity: 1;
  background: #f9f9f9;
  border-radius: 0 0 5px 5px;
}

.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  background: var(--card-bg-light);
  border-radius: 5px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-download__faq-question:hover {
  background: #f5f5f5;
  border-color: #d0d0d0;
}

.page-download__faq-question:active {
  background: #eeeeee;
}

.page-download__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  pointer-events: none;
  color: var(--dark-text-color);
}

.page-download__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  line-height: 1;
  color: #666;
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.page-download__faq-item.active .page-download__faq-toggle {
  color: #333;
}

.page-download__cta-bottom-section {
  padding: 80px 0;
  background-color: var(--secondary-color);
  color: var(--light-text-color);
  text-align: center;
}

.page-download__cta-bottom-section .page-download__section-title {
  color: var(--light-text-color);
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.page-download__cta-bottom-section p {
  font-size: 1.2em;
  max-width: 800px;
  margin: 0 auto 40px auto;
}

.page-download__cta-bottom-section .page-download__cta-button {
  background: var(--primary-color);
  color: var(--dark-text-color);
}

.page-download__cta-bottom-section .page-download__cta-button:hover {
  background: #e6c200;
}

/* Common image styles */
.page-download img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-download__content-image {
  margin: 60px auto;
  max-width: 90%;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-download__hero-title {
    font-size: 2.8em;
  }
  .page-download__section-title {
    font-size: 2em;
  }
  .page-download__guide-grid {
    grid-template-columns: 1fr;
  }
  .page-download__features-grid,
  .page-download__tech-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
  .page-download__qr-codes {
    flex-direction: column;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .page-download__hero-section {
    padding-top: 100px !important; /* Mobile: Adjust for fixed header */
    padding-bottom: 40px;
    padding-left: 15px;
    padding-right: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-download__hero-title {
    font-size: 2em;
    margin-bottom: 15px;
  }

  .page-download__hero-description {
    font-size: 1em;
    margin-bottom: 30px;
  }

  .page-download__cta-buttons {
    flex-direction: column;
    gap: 15px;
    margin-bottom: 30px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-download__cta-button {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding: 12px 20px !important;
    font-size: 1em !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-download__hero-image {
    max-width: 95%;
  }

  .page-download__section-title {
    font-size: 1.8em;
    margin-bottom: 30px;
    padding-top: 30px;
  }

  .page-download__section-subtitle {
    font-size: 1.5em;
    margin-top: 30px;
    margin-bottom: 20px;
  }

  .page-download__container {
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-download__intro-section,
  .page-download__benefits-section,
  .page-download__guide-section,
  .page-download__features-section,
  .page-download__security-section,
  .page-download__tech-info-section,
  .page-download__faq-section,
  .page-download__cta-bottom-section {
    padding: 50px 0;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

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

  .page-download__benefit-card,
  .page-download__guide-card,
  .page-download__feature-item,
  .page-download__tech-item {
    padding: 20px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-download__guide-card ol {
    padding-left: 20px;
  }

  .page-download__qr-codes {
    flex-direction: column;
    gap: 20px;
  }

  .page-download__qr-image {
    width: 150px;
    height: 150px;
  }

  .page-download__content-image {
    margin: 30px auto;
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
  }

  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

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

  .page-download__faq-question h3 {
    font-size: 15px;
  }

  .page-download__faq-toggle {
    font-size: 20px;
    width: 24px;
    height: 24px;
  }

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