/* style/about.css */

/* Các biến màu tùy chỉnh */
:root {
  --page-about-bg-dark: #08160F;
  --page-about-card-bg: #11271B;
  --page-about-text-main: #F2FFF6;
  --page-about-text-secondary: #A7D9B8;
  --page-about-btn-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --page-about-border-color: #2E7A4E;
  --page-about-glow-color: #57E38D;
  --page-about-gold-color: #F2C14E;
  --page-about-divider-color: #1E3A2A;
  --page-about-deep-green: #0A4B2C;
  --page-about-primary-brand: #11A84E;
  --page-about-secondary-brand: #22C768;
}

/* body đã padding-top: var(--header-offset) từ shared.css, không lặp lại ở đây */
.page-about {
  background-color: var(--page-about-bg-dark);
  color: var(--page-about-text-main);
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  overflow-x: hidden; /* Ngăn chặn tràn ngang */
}

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

.page-about__section-title {
  font-size: clamp(28px, 4vw, 48px);
  color: var(--page-about-text-main);
  text-align: center;
  margin-bottom: 40px;
  font-weight: 700;
  line-height: 1.2;
}

.page-about__section-description {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--page-about-text-secondary);
  text-align: center;
  margin-bottom: 50px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-about__sub-title {
  font-size: clamp(22px, 3vw, 32px);
  color: var(--page-about-gold-color);
  margin-top: 30px;
  margin-bottom: 15px;
  font-weight: 600;
}

/* Nút chung */
.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  text-align: center;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-about__btn-primary {
  background: var(--page-about-btn-gradient);
  color: var(--page-about-text-main);
  border: 2px solid transparent;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-about__btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-about__btn-secondary {
  background-color: transparent;
  color: var(--page-about-gold-color);
  border: 2px solid var(--page-about-gold-color);
}

.page-about__btn-secondary:hover {
  background-color: var(--page-about-gold-color);
  color: var(--page-about-bg-dark);
}

/* Hero Section */
.page-about__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  padding-top: 10px; /* Chỉ một khoảng cách nhỏ từ header */
  background-color: var(--page-about-bg-dark);
  overflow: hidden;
}

.page-about__hero-image-wrapper {
  width: 100%;
  max-height: 700px;
  overflow: hidden;
  margin-bottom: 40px; /* Khoảng cách giữa ảnh và nội dung */
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 12px;
  min-width: 200px;
  min-height: 200px;
}

.page-about__hero-content {
  text-align: center;
  max-width: 900px;
  z-index: 1;
}

.page-about__main-title {
  font-size: clamp(36px, 5vw, 60px);
  color: var(--page-about-gold-color);
  margin-bottom: 20px;
  font-weight: 800;
  line-height: 1.1;
}

.page-about__intro-text {
  font-size: clamp(18px, 2.5vw, 24px);
  color: var(--page-about-text-main);
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Mission & Vision Section */
.page-about__mission-vision-section {
  padding: 80px 0;
  background-color: var(--page-about-card-bg);
}

.page-about__dark-section {
  background-color: var(--page-about-card-bg);
  color: var(--page-about-text-main);
}

.page-about__content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.page-about__text-block p {
  color: var(--page-about-text-secondary);
  margin-bottom: 15px;
  font-size: 17px;
}

.page-about__image-block .page-about__image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  min-width: 200px;
  min-height: 200px;
}

/* Advantages Section */
.page-about__advantages-section {
  padding: 80px 0;
  background-color: var(--page-about-bg-dark);
}

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

.page-about__card {
  background-color: var(--page-about-card-bg);
  border: 1px solid var(--page-about-border-color);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  color: var(--page-about-text-main);
}

.page-about__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.page-about__card-image {
  width: 100%;
  height: 200px; /* Chiều cao cố định cho ảnh thẻ */
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
  min-width: 200px;
  min-height: 200px;
}

.page-about__card-title {
  font-size: 24px;
  color: var(--page-about-gold-color);
  margin-bottom: 15px;
  font-weight: 700;
}

.page-about__card p {
  font-size: 16px;
  color: var(--page-about-text-secondary);
  margin-bottom: 20px;
}

.page-about__card-link {
  display: inline-block;
  color: var(--page-about-secondary-brand);
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  transition: color 0.3s ease;
}

.page-about__card-link:hover {
  color: var(--page-about-gold-color);
  text-decoration: underline;
}

/* Commitment Section */
.page-about__commitment-section {
  padding: 80px 0;
}

/* Legal Section */
.page-about__legal-section {
  padding: 80px 0;
  background-color: var(--page-about-bg-dark);
}

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

.page-about__legal-item {
  background-color: var(--page-about-card-bg);
  border: 1px solid var(--page-about-border-color);
  border-radius: 12px;
  padding: 30px;
  color: var(--page-about-text-main);
}

.page-about__legal-item p {
  color: var(--page-about-text-secondary);
  font-size: 16px;
}

/* FAQ Section */
.page-about__faq-section {
  padding: 80px 0;
}

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

.page-about__faq-item {
  background-color: var(--page-about-card-bg);
  border: 1px solid var(--page-about-border-color);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 18px;
  font-weight: 600;
  color: var(--page-about-text-main);
  cursor: pointer;
  background-color: var(--page-about-card-bg);
  transition: background-color 0.3s ease;
}

.page-about__faq-question:hover {
  background-color: var(--page-about-deep-green);
}

.page-about__faq-qtext {
  flex-grow: 1;
  color: var(--page-about-gold-color);
}

.page-about__faq-toggle {
  font-size: 24px;
  line-height: 1;
  margin-left: 15px;
  color: var(--page-about-gold-color);
}

.page-about__faq-answer {
  padding: 0 25px 18px;
  font-size: 16px;
  color: var(--page-about-text-secondary);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.page-about__faq-item[open] .page-about__faq-answer {
  max-height: 500px; /* Đủ lớn để chứa nội dung */
  padding-top: 10px;
}

/* Để loại bỏ marker mặc định của details */
.page-about__faq-item summary {
  list-style: none;
}

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

/* CTA Section */
.page-about__cta-section {
  padding: 80px 0;
  background-color: var(--page-about-bg-dark);
  text-align: center;
}

.page-about__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
  flex-wrap: wrap; /* Cho phép xuống dòng trên mobile */
}

/* ---------------------------------- */
/* Responsive Design */
/* ---------------------------------- */

/* Tablet (max-width: 1024px) */
@media (max-width: 1024px) {
  .page-about__hero-section {
    padding: 40px 15px;
  }

  .page-about__main-title {
    font-size: clamp(30px, 4.5vw, 50px);
  }

  .page-about__intro-text {
    font-size: clamp(16px, 2vw, 20px);
  }

  .page-about__content-grid {
    grid-template-columns: 1fr;
  }

  .page-about__image-block {
    order: -1; /* Đẩy ảnh lên trên trong lưới 1 cột */
  }

  .page-about__section-title {
    margin-bottom: 30px;
  }

  .page-about__section-description {
    margin-bottom: 40px;
  }

  .page-about__advantage-cards {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }

  .page-about__legal-info {
    grid-template-columns: 1fr;
  }

  .page-about__cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .page-about__btn-primary,
  .page-about__btn-secondary {
    width: 100%;
    max-width: 300px;
  }
}

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
  .page-about {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-about__hero-section {
    padding: 30px 15px;
    padding-top: 10px !important;
  }

  .page-about__hero-image-wrapper {
    margin-bottom: 30px;
  }

  .page-about__main-title {
    font-size: clamp(28px, 8vw, 40px);
  }

  .page-about__intro-text {
    font-size: 16px;
  }

  .page-about__section-title {
    font-size: clamp(24px, 7vw, 36px);
    margin-bottom: 25px;
  }

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

  .page-about__sub-title {
    font-size: clamp(20px, 6vw, 28px);
    margin-top: 25px;
    margin-bottom: 10px;
  }

  /* Hình ảnh và Video Responsive */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__hero-section,
  .page-about__mission-vision-section,
  .page-about__advantages-section,
  .page-about__commitment-section,
  .page-about__legal-section,
  .page-about__faq-section,
  .page-about__cta-section,
  .page-about__hero-image-wrapper,
  .page-about__image-block,
  .page-about__advantage-cards,
  .page-about__legal-info,
  .page-about__cta-buttons {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow-x: hidden !important;
  }

  .page-about__card-image {
    height: 180px; /* Điều chỉnh chiều cao ảnh thẻ trên mobile */
  }

  /* Nút Responsive */
  .page-about__btn-primary,
  .page-about__btn-secondary,
  .page-about a[class*="button"],
  .page-about a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-about__cta-buttons {
    flex-direction: column !important;
    gap: 15px;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-about__faq-question {
    padding: 15px 20px;
    font-size: 16px;
  }

  .page-about__faq-answer {
    padding: 0 20px 15px;
    font-size: 15px;
  }
}