/* style/about.css */
.page-about {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--background);
}

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

.page-about__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 0 60px 0; /* body đã có padding-top từ header-offset */
  background-color: var(--deep-green); /* Sử dụng màu deep green làm nền cho hero */
  text-align: center;
  overflow: hidden;
}

.page-about__hero-image-wrapper {
  width: 100%;
  max-height: 675px; /* Giới hạn chiều cao của ảnh hero */
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}

.page-about__hero-content {
  position: relative;
  z-index: 10;
  max-width: 900px;
  padding: 40px 20px;
  color: var(--text-main);
  background: rgba(17, 39, 27, 0.7); /* Card B G với độ trong suốt */
  border-radius: 10px;
  margin-top: 20px; /* Tạo khoảng cách với ảnh */
}

.page-about__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  color: var(--text-main);
  font-weight: bold;
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-about__hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__cta-button {
  display: inline-block;
  padding: 15px 30px;
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: #ffffff;
  text-decoration: none;
  border-radius: 50px;
  font-weight: bold;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-about__cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  opacity: 0.9;
}

.page-about__intro-section,
.page-about__why-choose-us,
.page-about__team-section,
.page-about__faq-section {
  padding: 80px 0;
  background-color: var(--background);
  color: var(--text-main);
}

.page-about__dark-section {
  padding: 80px 0;
  background-color: var(--card-b-g);
  color: var(--text-main);
}

.page-about__section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--text-main);
  text-align: center;
  margin-bottom: 50px;
  font-weight: bold;
}

.page-about__text-block {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 20px;
  color: var(--text-secondary);
  text-align: justify;
}

.page-about__text-block:last-child {
  margin-bottom: 0;
}

.page-about__mission-vision .page-about__container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-about__mv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
  width: 100%;
}

.page-about__mv-item {
  background-color: var(--card-b-g);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
  color: var(--text-main);
  border: 1px solid var(--border);
}

.page-about__mv-item:hover {
  transform: translateY(-5px);
}

.page-about__mv-icon {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  object-fit: contain;
}

.page-about__mv-heading {
  font-size: 1.5rem;
  color: var(--glow);
  margin-bottom: 15px;
}

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

.page-about__feature-item {
  background-color: #11271B; /* Sử dụng màu Card B G */
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
  color: var(--text-main);
  border: 1px solid var(--border);
}

.page-about__feature-item:hover {
  transform: translateY(-5px);
}

.page-about__feature-icon {
  width: 80px;
  height: 80px;
  margin-bottom: 20px;
  object-fit: contain;
}

.page-about__feature-heading {
  font-size: 1.4rem;
  color: var(--text-main);
  margin-bottom: 15px;
}

.page-about__security-content {
  display: flex;
  gap: 40px;
  align-items: center;
  margin-top: 40px;
}

.page-about__security-image {
  flex: 1;
  max-width: 50%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.page-about__security-text {
  flex: 1;
  color: var(--text-secondary);
}

.page-about__text-link {
  display: block;
  color: var(--glow);
  text-decoration: none;
  margin-top: 10px;
  font-weight: bold;
  transition: color 0.3s ease;
}

.page-about__text-link:hover {
  color: var(--gold);
}

.page-about__team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__team-member {
  background-color: #11271B; /* Sử dụng màu Card B G */
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  color: var(--text-main);
  border: 1px solid var(--border);
}

.page-about__team-avatar {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 20px auto;
  border: 3px solid var(--glow);
}

.page-about__member-name {
  font-size: 1.4rem;
  color: var(--text-main);
  margin-bottom: 5px;
}

.page-about__member-role {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 15px;
}

.page-about__team-closing {
  text-align: center;
  margin-top: 40px;
  font-size: 1.1rem;
  font-style: italic;
}

.page-about__cta-section {
  padding: 80px 0;
  background-color: var(--deep-green);
  text-align: center;
  color: var(--text-main);
}

.page-about__cta-content {
  max-width: 800px;
}

.page-about__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
}

.page-about__btn-primary {
  background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  color: #ffffff;
  border: none;
}

.page-about__btn-secondary {
  background: var(--card-b-g);
  color: var(--glow);
  border: 2px solid var(--glow);
}

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

.page-about__faq-item {
  background-color: #11271B; /* Sử dụng màu Card B G */
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 15px;
  overflow: hidden;
  color: var(--text-main);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  font-size: 1.1rem;
  font-weight: bold;
  cursor: pointer;
  color: var(--text-main);
  background-color: rgba(17, 39, 27, 0.8); /* Hơi tối hơn card BG */
  border-bottom: 1px solid var(--divider);
}

.page-about__faq-item[open] .page-about__faq-question {
  border-bottom: 1px solid var(--glow);
}

.page-about__faq-toggle {
  font-size: 1.5rem;
  line-height: 1;
  color: var(--glow);
  transition: transform 0.3s ease;
}

.page-about__faq-item[open] .page-about__faq-toggle {
  transform: rotate(45deg);
}

.page-about__faq-answer {
  padding: 20px 25px;
  font-size: 1rem;
  color: var(--text-secondary);
}

.page-about__faq-item summary {
  list-style: none;
}

.page-about__faq-item summary::-webkit-details-marker {
  display: none;
}

/* Responsive adjustments */
@media (max-width: 992px) {
  .page-about__hero-content {
    padding: 30px 15px;
  }
  .page-about__main-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
  }
  .page-about__hero-description {
    font-size: 1rem;
  }
  .page-about__security-content {
    flex-direction: column;
    text-align: center;
  }
  .page-about__security-image {
    max-width: 80%;
    margin-bottom: 30px;
  }
}

@media (max-width: 768px) {
  .page-about__hero-section {
    padding: 10px 0 40px 0;
  }
  .page-about__hero-content {
    margin-top: 10px;
  }
  .page-about__intro-section,
  .page-about__mission-vision,
  .page-about__why-choose-us,
  .page-about__security-section,
  .page-about__team-section,
  .page-about__cta-section,
  .page-about__faq-section {
    padding: 50px 0;
  }
  .page-about__section-title {
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    margin-bottom: 30px;
  }
  .page-about__mv-grid,
  .page-about__feature-grid,
  .page-about__team-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-about__security-image {
    max-width: 100%;
  }
  .page-about__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-about__cta-button {
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    padding: 12px 20px;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  .page-about__faq-question {
    font-size: 1rem;
    padding: 15px 20px;
  }
  .page-about__faq-answer {
    padding: 15px 20px;
  }

  /* Mobile image responsiveness */
  .page-about img {
    max-width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-about__hero-image-wrapper,
  .page-about__security-content,
  .page-about__container,
  .page-about__mv-item,
  .page-about__feature-item,
  .page-about__team-member,
  .page-about__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden;
  }
  .page-about__hero-section {
    padding-top: 10px !important; /* body đã承担 --header-offset，此处禁止 var(--header-offset) */
  }
}

@media (max-width: 480px) {
  .page-about__hero-content {
    padding: 20px 10px;
  }
  .page-about__cta-button {
    font-size: 0.9rem;
  }
  .page-about__faq-question {
    font-size: 0.95rem;
  }
  .page-about__faq-answer {
    font-size: 0.9rem;
  }
}