/* style/about.css */
/* body đã có padding-top: var(--header-offset) từ shared.css, không cần thêm tại đây để tránh trùng lặp */

:root {
  --page-about-primary-color: #11A84E;
  --page-about-secondary-color: #22C768;
  --page-about-background-color: #08160F;
  --page-about-card-background-color: #11271B;
  --page-about-text-main-color: #F2FFF6;
  --page-about-text-secondary-color: #A7D9B8;
  --page-about-border-color: #2E7A4E;
  --page-about-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
}

.page-about {
  font-family: 'Arial', sans-serif;
  color: var(--page-about-text-main-color); /* Mặc định chữ sáng trên nền tối */
  background-color: var(--page-about-background-color);
  line-height: 1.6;
}

.page-about__section {
  padding: 60px 20px;
  background-color: var(--page-about-background-color);
}

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

.page-about__card-bg {
  background-color: var(--page-about-card-background-color);
}

.page-about__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px; /* Thêm padding ngang cho container */
  box-sizing: border-box;
}

.page-about__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 20px;
  padding-top: 10px; /* Chỉ một khoảng cách nhỏ từ header */
  text-align: center;
  overflow: hidden;
}

.page-about__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  margin-bottom: 30px;
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-about__hero-content {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  z-index: 1;
}

.page-about__main-title {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--page-about-text-main-color);
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-about__subtitle {
  font-size: 1.1rem;
  color: var(--page-about-text-secondary-color);
  margin-bottom: 30px;
}

.page-about__heading {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: var(--page-about-text-main-color);
  margin-bottom: 30px;
  text-align: center;
}

.page-about__sub-heading {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 600;
  color: var(--page-about-primary-color);
  margin-top: 40px;
  margin-bottom: 20px;
  text-align: left;
}

.page-about__paragraph {
  font-size: 1rem;
  color: var(--page-about-text-main-color);
  margin-bottom: 15px;
  text-align: justify;
}

.page-about__paragraph a {
  color: var(--page-about-secondary-color);
  text-decoration: underline;
}

.page-about__list {
  list-style: none;
  padding-left: 0;
  margin-bottom: 20px;
}

.page-about__list-item {
  font-size: 1rem;
  color: var(--page-about-text-main-color);
  margin-bottom: 10px;
  padding-left: 25px;
  position: relative;
  text-align: justify;
}

.page-about__list-item::before {
  content: '✔';
  color: var(--page-about-primary-color);
  position: absolute;
  left: 0;
  font-weight: bold;
}

.page-about__content-image {
  width: 100%;
  height: auto;
  display: block;
  margin: 30px auto;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* Buttons */
.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-about__btn-primary {
  background: var(--page-about-button-gradient);
  color: #ffffff; /* Luôn dùng màu trắng cho chữ trên nền nút gradient */
  border: none;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-about__btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
  opacity: 0.9;
}

.page-about__btn-secondary {
  background-color: transparent;
  color: var(--page-about-primary-color);
  border: 2px solid var(--page-about-primary-color);
  margin-left: 15px;
}

.page-about__btn-secondary:hover {
  background-color: var(--page-about-primary-color);
  color: #ffffff;
}

/* FAQ Section */
.page-about__faq-section {
  padding: 60px 20px;
}

.page-about__faq-list {
  margin-top: 30px;
  border-top: 1px solid var(--page-about-border-color);
}

.page-about__faq-item {
  border-bottom: 1px solid var(--page-about-border-color);
  padding: 20px 0;
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--page-about-text-main-color);
  padding: 10px 0;
  list-style: none; /* For details summary */
}

.page-about__faq-question::-webkit-details-marker {
  display: none; /* For details summary */
}

.page-about__faq-qtext {
  flex-grow: 1;
}

.page-about__faq-toggle {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--page-about-primary-color);
  margin-left: 15px;
}

.page-about__faq-answer {
  padding-top: 10px;
  font-size: 1rem;
  color: var(--page-about-text-secondary-color);
  line-height: 1.6;
}

.page-about__faq-item[open] .page-about__faq-toggle {
  content: '−'; /* Change to minus when open */
}

/* Responsive Design */
@media (max-width: 768px) {
  .page-about__section {
    padding: 40px 15px;
  }

  .page-about__hero-section {
    padding: 40px 15px;
    padding-top: 10px !important; /* body đã xử lý header offset, chỉ cần 10px */
  }

  .page-about__hero-content {
    padding: 0 10px;
  }

  .page-about__main-title {
    font-size: 2rem;
  }

  .page-about__subtitle {
    font-size: 1rem;
  }

  .page-about__heading {
    font-size: 1.8rem;
  }

  .page-about__sub-heading {
    font-size: 1.3rem;
  }

  .page-about__paragraph,
  .page-about__list-item,
  .page-about__faq-question,
  .page-about__faq-answer {
    font-size: 0.95rem;
  }

  /* Mobile Images */
  .page-about img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
    box-sizing: border-box !important;
  }

  /* Mobile Containers for images */
  .page-about__section,
  .page-about__container,
  .page-about__hero-image-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important; /* Ngăn tràn ngang */
    padding-left: 15px;
    padding-right: 15px;
  }

  /* Mobile Buttons */
  .page-about__btn-primary,
  .page-about__btn-secondary {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    margin-left: 0 !important;
    margin-bottom: 15px;
    padding: 12px 20px;
  }

  .page-about__hero-content a {
    display: block;
    margin-left: auto; /* Căn giữa nút */
    margin-right: auto;
    max-width: 300px; /* Giới hạn chiều rộng nút để không quá lớn */
  }

  .page-about__hero-content .page-about__btn-secondary {
    margin-top: 10px;
  }

  .page-about__contact .page-about__btn-primary {
    max-width: 300px;
    margin: 0 auto;
  }

  /* Ensure no horizontal scroll */
  .page-about {
    overflow-x: hidden;
  }
}