/* style/about.css */
/* body đã padding-top: var(--header-offset)；trang này không được viết lại biến đó */

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

.page-about {
  font-family: 'Arial', sans-serif;
  color: var(--page-about-text-main); /* Default text color for dark background */
  background-color: var(--page-about-bg-color);
}

.page-about__hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 10px 0 60px 0; /* body đã xử lý padding-top, chỉ thêm khoảng cách nhỏ */
  background-color: var(--page-about-bg-color);
  text-align: center;
  overflow: hidden;
}

.page-about__hero-image-wrapper {
  width: 100%;
  max-height: 500px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 30px;
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  filter: brightness(0.8); /* Slightly darken for text readability on top */
}

.page-about__hero-content {
  max-width: 900px;
  padding: 0 20px;
  z-index: 1;
  color: var(--page-about-text-main);
}

.page-about__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  color: var(--page-about-gold-color);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
}

.page-about__hero-description {
  font-size: 1.15rem;
  line-height: 1.6;
  margin-bottom: 30px;
  color: var(--page-about-text-secondary);
}

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

.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: 1.1rem;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  max-width: 100%;
  text-align: center;
}

.page-about__btn-primary {
  background: var(--page-about-button-gradient);
  color: var(--page-about-text-main);
  border: 2px solid transparent;
}

.page-about__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(42, 209, 111, 0.4);
}

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

.page-about__btn-secondary:hover {
  background: var(--page-about-gold-color);
  color: var(--page-about-bg-color);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(242, 193, 78, 0.4);
}

.page-about__section {
  padding: 60px 20px;
}

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

.page-about__light-section {
  background-color: #11271B; /* Card BG as light section background for contrast */
  color: var(--page-about-text-main);
}

.page-about__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
  box-sizing: border-box;
}

.page-about__section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  color: var(--page-about-gold-color);
  text-align: center;
  margin-bottom: 40px;
  font-weight: 700;
}

.page-about__intro-text {
  font-size: 1.1rem;
  line-height: 1.7;
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px auto;
  color: var(--page-about-text-secondary);
}

.page-about__grid {
  display: grid;
  gap: 40px;
}

.page-about__grid.page-about__products-grid,
.page-about__grid.page-about__commitments-grid,
.page-about__grid.page-about__join-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.page-about__text-block {
  line-height: 1.7;
  font-size: 1rem;
}

.page-about__image-block {
  text-align: center;
}

.page-about__content-image {
  width: 100%;
  height: auto;
  border-radius: 12px;
  object-fit: cover;
  margin-bottom: 15px;
  display: block;
}

.page-about__image-caption {
  font-style: italic;
  color: var(--page-about-text-secondary);
  font-size: 0.95rem;
}

.page-about__sub-title {
  font-size: 1.7rem;
  color: var(--page-about-primary-color);
  margin-top: 30px;
  margin-bottom: 15px;
  font-weight: 600;
}

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

.page-about__list li {
  position: relative;
  padding-left: 25px;
  margin-bottom: 10px;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--page-about-text-secondary);
}

.page-about__list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--page-about-gold-color);
  font-weight: 700;
}

.page-about__feature-card,
.page-about__product-card,
.page-about__commitment-item,
.page-about__join-item {
  background-color: var(--page-about-card-bg);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  text-align: left;
  display: flex;
  flex-direction: column;
  color: var(--page-about-text-secondary);
}

.page-about__feature-card .page-about__card-title,
.page-about__product-card .page-about__card-title {
  color: var(--page-about-gold-color);
  font-size: 1.5rem;
  margin-top: 20px;
  margin-bottom: 15px;
  font-weight: 600;
}

.page-about__feature-card p,
.page-about__product-card p {
  flex-grow: 1;
  line-height: 1.6;
  font-size: 0.95rem;
}

.page-about__card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 15px;
  display: block;
}

.page-about__btn-link {
  display: inline-block;
  margin-top: 20px;
  color: var(--page-about-gold-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
  border-bottom: 2px solid var(--page-about-gold-color);
  padding-bottom: 5px;
}

.page-about__btn-link:hover {
  color: var(--page-about-glow-color);
  border-color: var(--page-about-glow-color);
}

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

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

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

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  cursor: pointer;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--page-about-text-main);
  background-color: var(--page-about-deep-green-color);
  border-bottom: 1px solid var(--page-about-divider-color);
  list-style: none;
  -webkit-touch-callout: none; /* iOS Safari */
  -webkit-user-select: none;   /* Safari */
  -khtml-user-select: none;    /* Konqueror HTML */
  -moz-user-select: none;      /* Old versions of Firefox */
  -ms-user-select: none;       /* Internet Explorer/Edge */
  user-select: none;           /* Non-prefixed version, currently supported by Chrome, Edge, Opera and Firefox */
}

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

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

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

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

.page-about__faq-answer {
  padding: 15px 25px 20px 25px;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--page-about-text-secondary);
  background-color: var(--page-about-bg-color);
}

/* Responsive Styles */
@media (min-width: 769px) {
  .page-about__vision-mission .page-about__grid {
    grid-template-columns: 2fr 1fr;
    align-items: center;
  }
  .page-about__vision-mission .page-about__image-block {
    order: 2;
  }
  .page-about__why-choose .page-about__features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about__hero-image-wrapper {
    max-height: 600px;
  }
}

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

  .page-about__container,
  .page-about__hero-section,
  .page-about__section {
    padding-left: 15px !important;
    padding-right: 15px !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-about__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px !important;
  }

  .page-about__main-title {
    font-size: clamp(2rem, 8vw, 2.5rem);
  }

  .page-about__hero-description {
    font-size: 1rem;
  }

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

  .page-about__btn-primary,
  .page-about__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 1rem;
  }

  .page-about__section-title {
    font-size: clamp(1.8rem, 7vw, 2.2rem);
    margin-bottom: 30px;
  }

  .page-about__intro-text {
    font-size: 0.95rem;
    margin-bottom: 40px;
  }

  .page-about__grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .page-about__sub-title {
    font-size: 1.4rem;
    margin-top: 25px;
    margin-bottom: 10px;
  }

  .page-about__list li {
    font-size: 0.95rem;
  }

  .page-about__feature-card,
  .page-about__product-card,
  .page-about__commitment-item,
  .page-about__join-item {
    padding: 25px;
  }

  .page-about__feature-card .page-about__card-title,
  .page-about__product-card .page-about__card-title {
    font-size: 1.3rem;
  }

  .page-about__card-image {
    height: 180px;
  }

  .page-about__faq-question {
    font-size: 1rem;
    padding: 15px 20px;
  }

  .page-about__faq-answer {
    padding: 10px 20px 15px 20px;
    font-size: 0.95rem;
  }

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

  .page-about__hero-image-wrapper {
    max-height: 300px;
  }

  .page-about__section,
  .page-about__card,
  .page-about__container,
  .page-about__hero-section,
  .page-about__vision-mission,
  .page-about__why-choose,
  .page-about__products-services,
  .page-about__commitments,
  .page-about__join-us,
  .page-about__faq-section {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }
}