/* style/index.css */
:root {
  --primary-color: #FFD700; /* Vàng kim */
  --secondary-color: #0A192F; /* Xanh đậm */
  --text-light: #ffffff;
  --text-dark: #333333;
  --background-dark: #0a0a0a; /* Body background color */
  --card-bg-dark: rgba(255, 255, 255, 0.1);
  --card-bg-light: #ffffff;
  --border-color: #e0e0e0;
}

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

.page-index h1, .page-index h2, .page-index h3, .page-index h4, .page-index h5, .page-index h6 {
  color: var(--primary-color);
  margin-bottom: 15px;
  line-height: 1.2;
}

.page-index p {
  margin-bottom: 15px;
}

.page-index a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-index a:hover {
  color: #fff;
}

.page-index__cta-button {
  display: inline-block;
  padding: 12px 25px;
  border-radius: 5px;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  margin: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

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

.page-index__btn-primary:hover {
  background: darken(var(--primary-color), 10%);
  color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

.page-index__btn-secondary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.page-index__btn-secondary:hover {
  background: var(--primary-color);
  color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

/* General Section Styling */
.page-index__video-section,
.page-index__title-section,
.page-index__features-section,
.page-index__brand-section,
.page-index__faq-section,
.page-index__blog-section {
  padding: 60px 20px;
  text-align: center;
  position: relative;
  /* Ensure content is below fixed header */
  padding-top: 120px; /* Desktop: Adjust based on shared header height */
}

.page-index__video-section {
  padding-top: 10px; /* Specific for video section */
}

.page-index__dark-section {
  background-color: var(--secondary-color);
  color: var(--text-light);
}

.page-index__light-bg {
  background-color: var(--card-bg-light);
  color: var(--text-dark);
}

.page-index__light-bg h1, .page-index__light-bg h2, .page-index__light-bg h3 {
  color: var(--secondary-color);
}

.page-index__light-bg a {
  color: var(--secondary-color);
}

.page-index__light-bg a:hover {
  color: var(--primary-color);
}

.page-index__light-bg .page-index__cta-button {
  background: var(--secondary-color);
  color: var(--primary-color);
  border: 2px solid var(--secondary-color);
}

.page-index__light-bg .page-index__cta-button:hover {
  background: var(--primary-color);
  color: var(--secondary-color);
  border-color: var(--primary-color);
}

.page-index__dark-section .page-index__cta-button {
  background: var(--primary-color);
  color: var(--secondary-color);
  border: 2px solid var(--primary-color);
}

.page-index__dark-section .page-index__cta-button:hover {
  background: darken(var(--primary-color), 10%);
  color: var(--secondary-color);
  border-color: darken(var(--primary-color), 10%);
}

.page-index__dark-section .page-index__btn-secondary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.page-index__dark-section .page-index__btn-secondary:hover {
  background: var(--primary-color);
  color: var(--secondary-color);
}

/* Container Styling */
.page-index__video-container,
.page-index__title-container,
.page-index__features-container,
.page-index__brand-container,
.page-index__faq-container,
.page-index__blog-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Video Section */
.page-index__video-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-bottom: 40px;
}

.page-index__video-link {
  display: block;
  text-decoration: none;
  position: relative;
  width: 100%;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__video-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.page-index__video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.page-index__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 8px;
  object-fit: cover;
  pointer-events: none; /* Prevent video controls from blocking click event on parent <a> */
}

.page-index__video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 1;
}

.page-index__video-link:hover .page-index__video-overlay {
  opacity: 1;
}

.page-index__video-click-hint {
  color: #ffffff;
  font-size: 18px;
  font-weight: bold;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  padding: 10px 20px;
  background: rgba(0, 123, 255, 0.8);
  border-radius: 5px;
  white-space: nowrap;
}

.page-index__video-cta {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 30px;
}

.page-index__play-now-button {
  display: inline-block;
  padding: 15px 40px;
  background: var(--primary-color);
  color: var(--secondary-color);
  text-decoration: none;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: none;
  cursor: pointer;
}

.page-index__play-now-button:hover {
  background: darken(var(--primary-color), 10%);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.page-index__play-now-button:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* H1 Section */
.page-index__main-title {
  font-size: 3.2em;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.page-index__title-description {
  font-size: 1.2em;
  margin-bottom: 30px;
  color: var(--text-light);
}

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

/* Features Section */
.page-index__features-title {
  font-size: 2.5em;
  margin-bottom: 20px;
}

.page-index__features-description {
  font-size: 1.1em;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-index__features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-index__feature-card {
  background: var(--card-bg-light);
  color: var(--text-dark);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-index__feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.page-index__feature-card-image {
  max-width: 100%;
  height: 200px; /* Fixed height for consistency */
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.page-index__feature-card-title {
  font-size: 1.8em;
  color: var(--secondary-color);
  margin-bottom: 15px;
}

.page-index__feature-card-text {
  font-size: 1em;
  color: var(--text-dark);
  flex-grow: 1;
}

.page-index__feature-card-link {
  display: inline-block;
  margin-top: 20px;
  color: var(--primary-color);
  font-weight: bold;
  text-decoration: none;
}

.page-index__feature-card-link:hover {
  text-decoration: underline;
}

/* Brand Section */
.page-index__brand-title {
  font-size: 2.5em;
  margin-bottom: 40px;
  color: var(--primary-color);
}

.page-index__brand-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.page-index__brand-item {
  background: var(--card-bg-dark);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
}

.page-index__brand-item-icon {
  width: 100px; /* Ensure minimum size */
  height: 100px; /* Ensure minimum size */
  object-fit: contain;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 5px rgba(255, 215, 0, 0.5)); /* Subtle glow for dark background */
}

.page-index__brand-item-title {
  font-size: 1.8em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

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

.page-index__brand-cta {
  margin-top: 50px;
}

/* FAQ Section */
.page-index__faq-title {
  font-size: 2.5em;
  margin-bottom: 40px;
  color: var(--secondary-color);
}

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

.page-index__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

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

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

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

.page-index__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 1.1em;
  font-weight: 600;
  line-height: 1.5;
  color: var(--secondary-color);
  pointer-events: none; /* Prevent h3 from blocking click event */
}

.page-index__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  line-height: 1;
  color: var(--secondary-color);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* Prevent toggle from blocking click event */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
}

.page-index__faq-item.active .page-index__faq-toggle {
  color: var(--primary-color);
  transform: rotate(45deg);
}

.page-index__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 15px;
  opacity: 0;
  text-align: left;
}

.page-index__faq-item.active .page-index__faq-answer {
  max-height: 2000px !important; /* Sufficiently large to contain any content */
  padding: 20px 20px !important;
  opacity: 1;
  background: #f9f9f9;
  color: var(--text-dark);
  border-radius: 0 0 5px 5px;
}

/* Blog Section */
.page-index__blog-title {
  font-size: 2.5em;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.page-index__blog-description {
  font-size: 1.1em;
  margin-bottom: 40px;
  color: var(--text-light);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-index__blog-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-index__blog-item {
  background: var(--card-bg-dark);
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  text-align: left;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.page-index__blog-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.page-index__blog-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 20px;
  color: var(--text-light);
}

.page-index__blog-link:hover {
  color: var(--primary-color);
}

.page-index__blog-item-image {
  width: 100%;
  height: 200px; /* Fixed height for consistency */
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.page-index__blog-item-title {
  font-size: 1.4em;
  color: var(--primary-color);
  margin-bottom: 10px;
  flex-grow: 1;
}

.page-index__blog-item-excerpt {
  font-size: 0.95em;
  color: #cccccc;
  margin-bottom: 15px;
}

.page-index__blog-item-date {
  font-size: 0.85em;
  color: #999999;
  display: block;
}

.page-index__blog-cta {
  margin-top: 50px;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-index__main-title {
    font-size: 2.8em;
  }
  .page-index__features-title,
  .page-index__brand-title,
  .page-index__faq-title,
  .page-index__blog-title {
    font-size: 2.2em;
  }
}

@media (max-width: 768px) {
  .page-index__video-section,
  .page-index__title-section,
  .page-index__features-section,
  .page-index__brand-section,
  .page-index__faq-section,
  .page-index__blog-section {
    padding: 40px 15px;
    padding-top: 100px !important; /* Mobile: Adjust based on shared header height */
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }
  
  .page-index__video-section {
    padding-top: 10px !important; /* Mobile: specific for video section */
  }

  .page-index__video-container,
  .page-index__title-container,
  .page-index__features-container,
  .page-index__brand-container,
  .page-index__faq-container,
  .page-index__blog-container {
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-index__main-title {
    font-size: 2em;
  }

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

  .page-index__cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
  }

  .page-index__cta-button,
  .page-index__play-now-button {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding: 12px 20px !important;
    font-size: 16px !important;
    margin: 0 !important; /* Remove horizontal margins for full width */
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-index__features-title,
  .page-index__brand-title,
  .page-index__faq-title,
  .page-index__blog-title {
    font-size: 1.8em;
  }

  .page-index__features-grid,
  .page-index__brand-content,
  .page-index__blog-list {
    grid-template-columns: 1fr;
  }

  .page-index__feature-card,
  .page-index__brand-item,
  .page-index__blog-item {
    padding: 20px;
  }

  .page-index__faq-question {
    padding: 15px;
    flex-wrap: wrap;
  }
  
  .page-index__faq-question h3 {
    font-size: 15px;
    margin-bottom: 0;
    width: calc(100% - 40px);
  }
  
  .page-index__faq-toggle {
    margin-left: 10px;
    width: 24px;
    height: 24px;
    font-size: 20px;
  }
  
  .page-index__faq-answer {
    padding: 0 15px;
  }
  
  .page-index__faq-item.active .page-index__faq-answer {
    padding: 15px !important;
  }
  
  .page-index img,
  .page-index__feature-card-image,
  .page-index__brand-item-icon,
  .page-index__blog-item-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
    object-fit: contain; /* Ensure image fits within container on mobile */
  }

  .page-index video,
  .page-index__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    box-sizing: border-box !important;
    object-fit: contain; /* Ensure video fits within container on mobile */
  }
  
  .page-index__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-bottom: 56.25% !important; /* Maintain aspect ratio */
  }
  
  .page-index__video-link {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
}