/* style/about.css */
:root {
  --primary-color: #002060; /* Hải quân/Hoàng gia xanh */
  --secondary-color: #FFD700; /* Vàng kim */
  --text-light: #ffffff;
  --text-dark: #333333;
  --background-dark: #000000; /* Body background from shared.css */
  --card-bg-dark-mode: rgba(255, 255, 255, 0.1);
  --border-color-dark-mode: rgba(255, 255, 255, 0.2);
}

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

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

/* Video Section */
.page-about__video-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  padding-top: 120px; /* Adjusted for fixed header - Desktop */
  background: linear-gradient(135deg, var(--primary-color) 0%, #000000 100%);
  box-sizing: border-box;
}

.page-about__video-container {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

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

.page-about__video-link:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.page-about__video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  background-color: #000;
}

.page-about__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 12px;
  object-fit: cover;
  pointer-events: none; /* Prevent video controls from blocking click event */
}

.page-about__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, 0.4);
  border-radius: 12px;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 1;
}

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

.page-about__video-click-hint {
  color: var(--text-light);
  font-size: 20px;
  font-weight: bold;
  text-shadow: 0 2px 5px rgba(0, 0, 0, 0.7);
  padding: 15px 30px;
  background: rgba(255, 215, 0, 0.8);
  border-radius: 10px;
  white-space: nowrap;
  text-align: center;
}

.page-about__video-cta {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 40px;
}

.page-about__play-now-button {
  display: inline-block;
  padding: 18px 50px;
  background: var(--secondary-color);
  color: var(--primary-color);
  text-decoration: none;
  border-radius: 10px;
  font-size: 22px;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 6px 15px rgba(255, 215, 0, 0.4);
  border: none;
  cursor: pointer;
  text-transform: uppercase;
}

.page-about__play-now-button:hover {
  background: #e6c200;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(255, 215, 0, 0.6);
}

.page-about__play-now-button:active {
  transform: translateY(0);
  box-shadow: 0 4px 10px rgba(255, 215, 0, 0.3);
}

/* Hero Section */
.page-about__hero-section {
  padding: 80px 20px;
  text-align: center;
  background: var(--primary-color);
  color: var(--text-light);
  box-sizing: border-box;
}

.page-about__main-title {
  font-size: 48px;
  margin-bottom: 20px;
  color: var(--secondary-color);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-about__hero-description {
  font-size: 18px;
  max-width: 900px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

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

.page-about__cta-button {
  display: inline-block;
  padding: 15px 35px;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  border: 2px solid transparent;
}

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

.page-about__btn-primary:hover {
  background: #e6c200;
  border-color: #e6c200;
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(255, 215, 0, 0.4);
}

.page-about__btn-secondary {
  background: transparent;
  color: var(--secondary-color);
  border-color: var(--secondary-color);
}

.page-about__btn-secondary:hover {
  background: var(--secondary-color);
  color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(255, 215, 0, 0.4);
}

/* Brand Section */
.page-about__brand-section {
  padding: 80px 20px;
  background: var(--background-dark);
  color: var(--text-light);
  box-sizing: border-box;
}

.page-about__brand-title {
  font-size: 42px;
  text-align: center;
  margin-bottom: 30px;
  color: var(--secondary-color);
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
}

.page-about__brand-intro-text {
  font-size: 17px;
  text-align: center;
  max-width: 900px;
  margin: 0 auto 50px;
  line-height: 1.7;
}

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

.page-about__brand-item {
  background: var(--card-bg-dark-mode);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border-color-dark-mode);
}

.page-about__brand-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
}

.page-about__brand-item-icon {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  object-fit: contain;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.page-about__brand-item-title {
  font-size: 24px;
  color: var(--secondary-color);
  margin-bottom: 15px;
}

.page-about__brand-item p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
}

/* FAQ Section */
.page-about__faq-section {
  padding: 80px 20px;
  background: #1a1a1a;
  color: var(--text-light);
  box-sizing: border-box;
}

.page-about__faq-main-title {
  font-size: 42px;
  text-align: center;
  margin-bottom: 30px;
  color: var(--secondary-color);
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
}

.page-about__faq-intro-text {
  font-size: 17px;
  text-align: center;
  max-width: 900px;
  margin: 0 auto 50px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
}

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

.page-about__faq-item {
  margin-bottom: 15px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  background: var(--primary-color);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-about__faq-question:hover {
  background: #002d7e;
  border-color: rgba(255, 215, 0, 0.5);
}

.page-about__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-light);
  pointer-events: none;
}

.page-about__faq-toggle {
  font-size: 30px;
  font-weight: bold;
  line-height: 1;
  color: var(--secondary-color);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 20px;
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 35px;
  height: 35px;
}

.page-about__faq-item.active .page-about__faq-toggle {
  color: var(--text-light);
  transform: rotate(45deg);
}

.page-about__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: #2a2a2a;
  border-radius: 0 0 10px 10px;
}

.page-about__faq-item.active .page-about__faq-answer {
  max-height: 2000px !important; /* Ensure enough height for content */
  padding: 25px !important;
  opacity: 1;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.page-about__faq-answer p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.7;
  margin: 0;
}

/* Blog Section */
.page-about__blog-section {
  padding: 80px 20px;
  background: var(--background-dark);
  color: var(--text-light);
  box-sizing: border-box;
}

.page-about__blog-title {
  font-size: 42px;
  text-align: center;
  margin-bottom: 30px;
  color: var(--secondary-color);
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.4);
}

.page-about__blog-intro-text {
  font-size: 17px;
  text-align: center;
  max-width: 900px;
  margin: 0 auto 50px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
}

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

.page-about__blog-item {
  background: var(--card-bg-dark-mode);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border-color-dark-mode);
}

.page-about__blog-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
}

.page-about__blog-link {
  text-decoration: none;
  color: inherit;
  display: block;
  height: 100%;
}

.page-about__blog-item-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

.page-about__blog-item-content {
  padding: 25px;
}

.page-about__blog-item-title {
  font-size: 22px;
  color: var(--secondary-color);
  margin-bottom: 10px;
  line-height: 1.4;
}

.page-about__blog-item-excerpt {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 15px;
  line-height: 1.6;
}

.page-about__blog-item-date {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  display: block;
  text-align: right;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-about__main-title {
    font-size: 40px;
  }
  .page-about__brand-title, .page-about__faq-main-title, .page-about__blog-title {
    font-size: 38px;
  }
  .page-about__video-section {
    padding-top: 100px; /* Tablet padding */
  }
}

@media (max-width: 768px) {
  .page-about__video-section {
    padding-top: 100px !important; /* Mobile padding */
    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-about__video-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0;
    padding-right: 0;
    overflow: hidden !important;
  }
  .page-about__video-link {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-about__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    border-radius: 8px;
    overflow: hidden !important;
  }
  .page-about__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    border-radius: 8px;
    object-fit: contain;
  }
  .page-about__video-cta {
    margin-top: 25px;
    padding-left: 15px;
    padding-right: 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
  .page-about__play-now-button {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 15px 30px !important;
    font-size: 18px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    border-radius: 8px;
  }
  .page-about__video-click-hint {
    font-size: 16px !important;
    padding: 10px 20px !important;
  }

  .page-about__container {
    padding: 30px 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-about__hero-section {
    padding: 60px 15px;
  }

  .page-about__main-title {
    font-size: 32px;
  }

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

  .page-about__cta-buttons {
    flex-direction: column;
    gap: 15px;
    padding: 0 15px;
  }

  .page-about__cta-button {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding: 12px 20px !important;
    font-size: 16px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-about__brand-section, .page-about__faq-section, .page-about__blog-section {
    padding: 60px 15px;
  }

  .page-about__brand-title, .page-about__faq-main-title, .page-about__blog-title {
    font-size: 30px;
    margin-bottom: 25px;
  }

  .page-about__brand-intro-text, .page-about__faq-intro-text, .page-about__blog-intro-text {
    font-size: 15px;
    margin-bottom: 40px;
  }

  .page-about__brand-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .page-about__brand-item-icon {
    width: 80px;
    height: 80px;
  }

  .page-about__brand-item-title {
    font-size: 20px;
  }

  .page-about__brand-item p {
    font-size: 15px;
  }

  .page-about__faq-question {
    padding: 15px 20px;
    flex-wrap: wrap;
  }

  .page-about__faq-question h3 {
    font-size: 16px;
    width: calc(100% - 40px);
  }

  .page-about__faq-toggle {
    margin-left: 10px;
    width: 28px;
    height: 28px;
    font-size: 24px;
  }

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

  .page-about__faq-item.active .page-about__faq-answer {
    padding: 20px !important;
  }

  .page-about__faq-answer p {
    font-size: 15px;
  }

  .page-about__blog-list {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .page-about__blog-item-image {
    height: 180px;
  }

  .page-about__blog-item-content {
    padding: 20px;
  }

  .page-about__blog-item-title {
    font-size: 18px;
  }

  .page-about__blog-item-excerpt {
    font-size: 14px;
  }

  .page-about__blog-item-date {
    font-size: 13px;
  }
}

/* All images responsive */
.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* All video responsive */
.page-about video,
.page-about__video {
  max-width: 100%;
  width: 100%;
  height: auto;
  display: block;
}

.page-about__video-section,
.page-about__video-container,
.page-about__video-wrapper {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

@media (max-width: 768px) {
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-about video,
  .page-about__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__video-section,
  .page-about__video-container,
  .page-about__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    /* padding-left and padding-right are handled by specific sections for better control */
    overflow: hidden !important;
  }
}