/* style/download.css */

/* --- Base Styles for Download Page --- */
.page-download {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: #ffffff; /* Default text color for dark body background */
  background-color: transparent; /* Body background is #000000 from shared.css */
  padding-top: var(--header-offset, 120px); /* Ensure content is below fixed header */
}

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

.page-download__section-title {
  font-size: 36px;
  font-weight: bold;
  color: #FFD700; /* Gold for titles */
  text-align: center;
  margin-bottom: 20px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.page-download__section-description {
  font-size: 18px;
  color: #f0f0f0;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px auto;
  line-height: 1.8;
}

/* --- Hero Section --- */
.page-download__hero-section {
  background: #1A1A1A; /* Dark background for hero */
  color: #ffffff;
  padding: 80px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border-bottom: 5px solid #FFD700;
}

.page-download__hero-container {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.page-download__main-title {
  font-size: 52px;
  font-weight: 900;
  color: #FFD700;
  margin-bottom: 25px;
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.7);
  line-height: 1.2;
}

.page-download__description {
  font-size: 20px;
  color: #e0e0e0;
  margin-bottom: 40px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

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

.page-download__cta-button {
  display: inline-flex;
  align-items: center;
  padding: 18px 35px;
  background: linear-gradient(145deg, #FFD700, #E0B500); /* Gold gradient */
  color: #1A1A1A; /* Dark text on gold button */
  text-decoration: none;
  border-radius: 50px;
  font-size: 20px;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
  border: none;
  cursor: pointer;
  white-space: nowrap;
  gap: 10px;
}

.page-download__cta-button:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
  background: linear-gradient(145deg, #E0B500, #FFD700);
}

/* Specific CTA button styles for secondary actions */
.page-download__cta-button--primary {
  background: linear-gradient(145deg, #FFD700, #E0B500);
  color: #1A1A1A;
}

.page-download__cta-button--secondary {
  background: #333333;
  color: #FFD700;
  border: 2px solid #FFD700;
}

.page-download__cta-button--secondary:hover {
  background: #1A1A1A;
  color: #FFD700;
  border-color: #FFD700;
}

/* --- Download Methods Section --- */
.page-download__methods-section {
  background-color: #0d0d0d; /* Slightly lighter dark background */
  padding: 60px 0;
}

.page-download__method-tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
  border-bottom: 2px solid #333333;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.page-download__tab-button {
  background: transparent;
  border: none;
  padding: 15px 30px;
  font-size: 18px;
  font-weight: bold;
  color: #e0e0e0;
  cursor: pointer;
  transition: all 0.3s ease;
  border-bottom: 3px solid transparent;
  outline: none;
}

.page-download__tab-button:hover {
  color: #FFD700;
}

.page-download__tab-button.active {
  color: #FFD700;
  border-bottom-color: #FFD700;
}

.page-download__tab-content {
  display: none;
  animation: fadeIn 0.5s ease-in-out;
}

.page-download__tab-content.active {
  display: block;
}

.page-download__download-card {
  background: #1A1A1A;
  border-radius: 12px;
  padding: 40px;
  text-align: center;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
  max-width: 600px;
  margin: 0 auto;
  border: 1px solid #333333;
}

.page-download__card-title {
  font-size: 28px;
  color: #FFD700;
  margin-bottom: 20px;
}

.page-download__qr-code-wrapper {
  margin: 30px auto;
  width: 250px;
  height: 250px;
  background: #ffffff;
  padding: 15px;
  border-radius: 8px;
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.2);
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-download__qr-code {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

.page-download__pc-image-wrapper {
  margin: 30px auto;
  max-width: 100%;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.page-download__pc-image {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}

.page-download__card-text {
  font-size: 17px;
  color: #c0c0c0;
  margin-bottom: 30px;
  line-height: 1.7;
}

.page-download__download-button {
  display: inline-block;
  padding: 15px 30px;
  background: linear-gradient(145deg, #CC0000, #990000); /* Red emphasis */
  color: #ffffff;
  text-decoration: none;
  border-radius: 50px;
  font-size: 18px;
  font-weight: bold;
  transition: all 0.3s ease;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  border: none;
  cursor: pointer;
}

.page-download__download-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
  background: linear-gradient(145deg, #990000, #CC0000);
}

/* --- Features Section --- */
.page-download__features-section {
  background-color: #1A1A1A;
  padding: 60px 0;
}

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

.page-download__feature-item {
  background: #0d0d0d;
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
  border: 1px solid #333333;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-download__feature-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
}

.page-download__feature-icon {
  width: 200px; /* Display size matches min requirement */
  height: 200px;
  max-width: 100%;
  height: auto;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 5px #FFD700); /* Gold shadow for icons */
}

.page-download__feature-title {
  font-size: 22px;
  color: #FFD700;
  margin-bottom: 15px;
}

.page-download__feature-text {
  font-size: 16px;
  color: #c0c0c0;
  line-height: 1.7;
}

/* --- Installation Guide Section --- */
.page-download__installation-guide-section {
  background-color: #0d0d0d;
  padding: 60px 0;
}

.page-download__guide-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-download__guide-item {
  background: #1A1A1A;
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
  border: 1px solid #333333;
  position: relative;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-download__guide-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
}

.page-download__step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: #FFD700;
  color: #1A1A1A;
  border-radius: 50%;
  font-size: 32px;
  font-weight: bold;
  margin-bottom: 20px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.page-download__step-title {
  font-size: 22px;
  color: #FFD700;
  margin-bottom: 15px;
}

.page-download__step-description {
  font-size: 16px;
  color: #c0c0c0;
  line-height: 1.7;
}

/* --- Security Section --- */
.page-download__security-section {
  background-color: #1A1A1A;
  padding: 60px 0;
}

.page-download__security-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-download__security-item {
  background: #0d0d0d;
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
  border: 1px solid #333333;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-download__security-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
}

.page-download__security-icon {
  width: 200px; /* Display size matches min requirement */
  height: 200px;
  max-width: 100%;
  height: auto;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 5px #CC0000); /* Red shadow for security icons */
}

.page-download__security-title {
  font-size: 22px;
  color: #CC0000; /* Red for emphasis on security */
  margin-bottom: 15px;
}

.page-download__security-text {
  font-size: 16px;
  color: #c0c0c0;
  line-height: 1.7;
}

.page-download__cta-center {
  text-align: center;
  margin-top: 50px;
}

/* --- FAQ Section --- */
.page-download__faq-section {
  background-color: #0d0d0d;
  padding: 60px 0;
}

.page-download__faq-list {
  max-width: 900px;
  margin: 50px auto 0 auto;
}

/* FAQ容器样式 */
.page-download__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  border: 1px solid #333333;
}

/* 问题样式 */
.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  background: #1A1A1A;
  border-radius: 8px; /* Only top corners initially */
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-download__faq-question:hover {
  background: #2a2a2a;
}

.page-download__faq-question:active {
  background: #3a3a3a;
}

/* 问题标题样式 */
.page-download__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  color: #FFD700;
  pointer-events: none; /* 防止h3标签阻止点击事件 */
}

/* 切换图标 */
.page-download__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  line-height: 1;
  color: #FFD700;
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 20px;
  pointer-events: none; /* 防止图标阻止点击事件 */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
}

.page-download__faq-item.active .page-download__faq-toggle {
  color: #CC0000;
  transform: rotate(45deg); /* Plus to X for active state */
}

/* FAQ默认状态 - 答案隐藏 */
.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, opacity 0.4s ease;
  padding: 0 25px;
  opacity: 0;
  background: #0d0d0d;
  color: #c0c0c0;
  font-size: 16px;
  line-height: 1.7;
}

/* FAQ展开状态 - 🚨 Sử dụng!important và đủ lớn max-height để đảm bảo có thể mở rộng */
.page-download__faq-item.active .page-download__faq-answer {
  max-height: 2000px !important; /* 🚨 Sử dụng!important để đảm bảo ưu tiên, giá trị đủ lớn để chứa mọi nội dung */
  padding: 20px 25px !important;
  opacity: 1;
  border-top: 1px solid #333333;
  border-radius: 0 0 8px 8px;
}

/* --- Final CTA Section --- */
.page-download__final-cta-section {
  background-color: #1A1A1A;
  padding: 60px 0 80px 0;
  text-align: center;
  border-top: 5px solid #FFD700;
}

.page-download__final-cta-section .page-download__section-description {
  margin-bottom: 40px;
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
  .page-download__main-title {
    font-size: 44px;
  }
  .page-download__section-title {
    font-size: 32px;
  }
}

@media (max-width: 768px) {
  .page-download {
    padding-top: var(--header-offset, 120px) !important; /* Mobile header offset */
  }
  .page-download__container {
    padding: 20px 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important; /* Prevent horizontal scroll */
  }

  .page-download__main-title {
    font-size: 36px;
    margin-bottom: 20px;
  }

  .page-download__description {
    font-size: 17px;
    margin-bottom: 30px;
  }

  .page-download__cta-buttons {
    flex-direction: column; /* Stack buttons vertically */
    gap: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 0 15px;
  }
  
  .page-download__cta-button {
    width: 100% !important;
    max-width: 100% !important;
    font-size: 18px;
    padding: 15px 20px;
    white-space: normal !important;
    word-wrap: break-word !important;
    box-sizing: border-box !important;
  }

  .page-download__section-title {
    font-size: 28px;
    margin-bottom: 15px;
  }

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

  .page-download__method-tabs {
    flex-wrap: wrap;
    margin-bottom: 30px;
  }

  .page-download__tab-button {
    flex: 1 1 auto;
    padding: 12px 15px;
    font-size: 16px;
    white-space: nowrap;
  }

  .page-download__download-card {
    padding: 30px 20px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-download__card-title {
    font-size: 24px;
  }

  .page-download__qr-code-wrapper {
    width: 200px;
    height: 200px;
    padding: 10px;
    margin-bottom: 20px;
  }
  
  .page-download__qr-code,
  .page-download__pc-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    box-sizing: border-box !important;
  }

  .page-download__download-button {
    font-size: 16px;
    padding: 12px 25px;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-download__features-grid,
  .page-download__guide-steps,
  .page-download__security-grid {
    grid-template-columns: 1fr; /* Single column layout for mobile */
    gap: 20px;
  }

  .page-download__feature-item,
  .page-download__guide-item,
  .page-download__security-item {
    padding: 25px;
  }

  .page-download__feature-icon,
  .page-download__security-icon {
    width: 200px; /* Still meet min requirement */
    height: 200px;
    margin-bottom: 15px;
  }

  .page-download__feature-title,
  .page-download__step-title,
  .page-download__security-title {
    font-size: 20px;
  }

  .page-download__feature-text,
  .page-download__step-description,
  .page-download__security-text {
    font-size: 15px;
  }

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

  .page-download__faq-question h3 {
    font-size: 16px;
  }

  .page-download__faq-toggle {
    font-size: 24px;
    width: 25px;
    height: 25px;
    margin-left: 15px;
  }
  
  .page-download__faq-answer {
    padding: 0 20px;
  }
  
  .page-download__faq-item.active .page-download__faq-answer {
    padding: 15px 20px !important;
  }

  .page-download__final-cta-section .page-download__cta-buttons {
    padding: 0 15px;
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Ensure images and videos are responsive */
.page-download img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-download video {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Specific overrides for mobile to ensure no overflow */
@media (max-width: 768px) {
  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
  }
  .page-download video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
  }
  .page-download__qr-code-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    margin-left: auto;
    margin-right: auto;
  }
  .page-download__pc-image-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    margin-left: auto;
    margin-right: auto;
  }
  /* All containers that hold images/videos */
  .page-download__hero-section,
  .page-download__methods-section,
  .page-download__features-section,
  .page-download__installation-guide-section,
  .page-download__security-section,
  .page-download__faq-section,
  .page-download__final-cta-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important; /* Crucial for preventing horizontal scroll */
  }
  /* For elements that are direct children of sections and might cause overflow */
  .page-download__download-card,
  .page-download__features-grid,
  .page-download__guide-steps,
  .page-download__security-grid,
  .page-download__faq-list {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    margin-left: auto;
    margin-right: auto;
  }
}

/* No filter on images */
.page-download img {
  filter: none; /* Explicitly remove any potential filter */
}