/* style/about.css */
/* body đã padding-top: var(--header-offset) từ shared.css; trang này không cần thêm */

:root {
  --page-about-bg-primary: #08160F;
  --page-about-card-bg: #11271B;
  --page-about-text-main: #F2FFF6;
  --page-about-text-secondary: #A7D9B8;
  --page-about-border-color: #2E7A4E;
  --page-about-btn-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;
  line-height: 1.6;
  color: var(--page-about-text-main); /* Default text color for dark body bg */
  background-color: var(--page-about-bg-primary);
}

.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 20px;
  padding-top: 10px; /* Small top padding, body handles header offset */
  background-color: var(--page-about-bg-primary);
  overflow: hidden;
}

.page-about__hero-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 30px;
}

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

.page-about__main-title {
  font-size: clamp(2.2em, 4vw, 3.2em);
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--page-about-text-main);
  line-height: 1.2;
}

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

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

.page-about__btn-primary,
.page-about__btn-secondary,
.page-about__cta-button {
  display: inline-block;
  padding: 12px 25px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  max-width: 100%;
}

.page-about__btn-primary {
  background: var(--page-about-btn-gradient);
  color: #ffffff;
  border: 2px solid transparent;
}

.page-about__btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

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

.page-about__btn-secondary:hover {
  background: var(--page-about-glow-color);
  color: var(--page-about-bg-primary);
  transform: translateY(-2px);
}

.page-about__mission-vision-section,
.page-about__why-choose-us-section,
.page-about__team-section,
.page-about__cta-section {
  background-color: var(--page-about-bg-primary);
  color: var(--page-about-text-main);
}

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

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

.page-about__content-area {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}

.page-about__section-title {
  font-size: clamp(1.8em, 3.5vw, 2.8em);
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
  color: var(--page-about-text-main);
  position: relative;
  padding-bottom: 15px;
}

.page-about__section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--page-about-glow-color);
  border-radius: 2px;
}

.page-about__sub-title {
  font-size: clamp(1.4em, 2.5vw, 2em);
  font-weight: 600;
  margin-top: 30px;
  margin-bottom: 15px;
  color: var(--page-about-glow-color);
}

.page-about__paragraph {
  font-size: 1.05em;
  margin-bottom: 15px;
  color: var(--page-about-text-secondary);
}

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

.page-about__value-card {
  background-color: var(--page-about-card-bg);
  border: 1px solid var(--page-about-border-color);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
  color: var(--page-about-text-main);
}

.page-about__value-card:hover {
  transform: translateY(-5px);
}

.page-about__card-title {
  font-size: 1.4em;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--page-about-glow-color);
}

.page-about__card-text {
  font-size: 1em;
  color: var(--page-about-text-secondary);
}

.page-about__feature-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 40px;
  margin-top: 30px;
}

.page-about__feature-item {
  flex: 1;
  min-width: 300px;
}

.page-about__feature-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  max-width: 100%;
}

.page-about__feature-content {
  flex: 2;
  min-width: 300px;
}

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

.page-about__list-item {
  background-color: var(--page-about-card-bg);
  border: 1px solid var(--page-about-border-color);
  border-radius: 8px;
  padding: 15px 20px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  color: var(--page-about-text-main);
}

.page-about__list-item::before {
  content: '✓';
  color: var(--page-about-glow-color);
  font-weight: bold;
  margin-right: 10px;
  font-size: 1.2em;
}

.page-about__team-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
  margin-top: 30px;
  max-width: 100%;
}

.page-about__faq-list {
  margin-top: 30px;
}

.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;
  color: var(--page-about-text-main);
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.15em;
  font-weight: 600;
  cursor: pointer;
  color: var(--page-about-glow-color);
  background-color: var(--page-about-deep-green-color);
  border-bottom: 1px solid var(--page-about-border-color);
}

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

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

.page-about__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  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: 1em;
  color: var(--page-about-text-secondary);
}

.page-about__faq-answer p {
  margin-bottom: 0;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
  .page-about__hero-section {
    padding: 40px 15px;
    padding-top: 10px !important;
  }

  .page-about__hero-content {
    padding: 0 15px;
  }

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

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

  .page-about__hero-cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100%;
    padding: 0 15px;
    box-sizing: border-box !important;
  }

  .page-about__btn-primary,
  .page-about__btn-secondary,
  .page-about__cta-button {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 15px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

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

  .page-about__section-title {
    font-size: 2em;
    margin-bottom: 30px;
  }

  .page-about__sub-title {
    font-size: 1.3em;
  }

  .page-about__paragraph {
    font-size: 0.95em;
  }

  .page-about__values-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .page-about__value-card {
    padding: 25px;
  }

  .page-about__feature-grid {
    flex-direction: column;
    gap: 30px;
  }

  .page-about__feature-item,
  .page-about__feature-content {
    min-width: unset;
    width: 100%;
  }

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

  .page-about video,
  .page-about__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .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: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }

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

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