/* style/about.css */
:root {
  --s777-primary: #11A84E;
  --s777-secondary: #22C768;
  --s777-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --s777-card-bg: #11271B;
  --s777-bg-color: #08160F;
  --s777-text-main: #F2FFF6;
  --s777-text-secondary: #A7D9B8;
  --s777-border: #2E7A4E;
  --s777-glow: #57E38D;
  --s777-gold: #F2C14E;
  --s777-divider: #1E3A2A;
  --s777-deep-green: #0A4B2C;
}

/* body đã padding-top: var(--header-offset) từ shared.css, không lặp lại ở đây */
.page-about {
  font-family: 'Arial', sans-serif;
  color: var(--s777-text-main); /* Mặc định chữ sáng trên nền tối */
  background-color: var(--s777-bg-color);
  line-height: 1.6;
}

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

/* Hero Section */
.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 10px; /* Nhỏ, không dùng var(--header-offset) */
  padding-bottom: 60px;
  overflow: hidden;
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  position: relative; /* Đảm bảo hình ảnh không bị đè bởi văn bản */
  z-index: 1;
}

.page-about__hero-content {
  position: relative; /* Đảm bảo văn bản nằm dưới hình ảnh */
  z-index: 2;
  text-align: center;
  padding: 40px 20px;
  max-width: 900px;
  margin-top: -80px; /* Kéo lên một chút để tạo sự liền mạch */
  background: rgba(8, 22, 15, 0.8); /* Nền tối để chữ nổi bật */
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.page-about__main-title {
  font-size: clamp(2em, 3.5vw, 3.2em); /* H1 không dùng giá trị cố định quá lớn */
  color: var(--s777-text-main);
  margin-bottom: 20px;
  font-weight: bold;
  line-height: 1.2;
}

.page-about__description {
  font-size: 1.1em;
  color: var(--s777-text-secondary);
  margin-bottom: 30px;
}

.page-about__btn-primary {
  display: inline-block;
  padding: 15px 30px;
  background: var(--s777-button-gradient);
  color: #ffffff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  box-sizing: border-box;
}

.page-about__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(87, 227, 141, 0.4);
}

/* General Section Styling */
.page-about__section {
  padding: 60px 0;
  background-color: var(--s777-bg-color);
}

.page-about__dark-section {
  background-color: var(--s777-card-bg);
  color: var(--s777-text-main);
}

.page-about__section-title {
  font-size: 2.5em;
  color: var(--s777-primary);
  text-align: center;
  margin-bottom: 40px;
  font-weight: bold;
}

.page-about__section-title--light {
  color: var(--s777-text-main);
}

.page-about__sub-title {
  font-size: 1.8em;
  color: var(--s777-text-main);
  margin-top: 30px;
  margin-bottom: 20px;
}

.page-about__text-block {
  font-size: 1em;
  color: var(--s777-text-secondary);
  margin-bottom: 20px;
  text-align: justify;
}

.page-about__text-block--light {
  color: var(--s777-text-main);
}

.page-about__image-content {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 40px auto;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.page-about__image-content--center {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

/* Features Grid */
.page-about__grid-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__feature-item {
  background-color: var(--s777-deep-green);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__feature-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(87, 227, 141, 0.3);
}

.page-about__feature-title {
  font-size: 1.5em;
  color: var(--s777-gold);
  margin-bottom: 15px;
  font-weight: bold;
}

.page-about__feature-text {
  font-size: 0.95em;
  color: var(--s777-text-secondary);
}

/* Values List */
.page-about__values-list ul {
  list-style: none;
  padding: 0;
  margin-top: 20px;
}

.page-about__values-list li {
  background-color: var(--s777-card-bg);
  margin-bottom: 10px;
  padding: 15px 20px;
  border-left: 5px solid var(--s777-primary);
  border-radius: 5px;
  font-size: 1.1em;
  color: var(--s777-text-main);
  box-shadow: 0 1px 5px rgba(0,0,0,0.1);
}

.page-about__values-list li strong {
  color: var(--s777-gold);
}

/* Contact List */
.page-about__contact-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
}

.page-about__contact-list li {
  font-size: 1.1em;
  margin-bottom: 15px;
  color: var(--s777-text-main);
}

.page-about__link-contact {
  color: var(--s777-glow);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-about__link-contact:hover {
  color: var(--s777-gold);
  text-decoration: underline;
}

.page-about__link-inline {
  color: var(--s777-glow);
  text-decoration: underline;
  transition: color 0.3s ease;
}

.page-about__link-inline:hover {
  color: var(--s777-gold);
}

/* FAQ Section */
.page-about__faq-list {
  margin-top: 40px;
}

.page-about__faq-item {
  background-color: var(--s777-card-bg);
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.page-about__faq-item summary {
  list-style: none; /* Ẩn dấu mũi tên mặc định */
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  cursor: pointer;
  background-color: var(--s777-deep-green);
  color: var(--s777-text-main);
  font-weight: bold;
  font-size: 1.1em;
  border-bottom: 1px solid var(--s777-divider);
  transition: background-color 0.3s ease;
}

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

.page-about__faq-item summary:hover {
  background-color: var(--s777-primary);
}

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

.page-about__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
  color: var(--s777-glow);
}

.page-about__faq-answer {
  padding: 20px;
  background-color: var(--s777-card-bg);
  color: var(--s777-text-secondary);
  font-size: 1em;
}

.page-about__faq-answer p {
  margin-bottom: 10px;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
  .page-about__main-title {
    font-size: clamp(2em, 4vw, 3em);
  }
  .page-about__section-title {
    font-size: 2em;
  }
  .page-about__hero-content {
    margin-top: -50px;
    padding: 30px;
  }
}

@media (max-width: 768px) {
  .page-about__container {
    padding: 0 15px;
  }
  .page-about__hero-section {
    padding-bottom: 40px;
  }
  .page-about__hero-content {
    margin-top: -30px;
    padding: 20px;
  }
  .page-about__main-title {
    font-size: clamp(1.8em, 6vw, 2.5em);
  }
  .page-about__description {
    font-size: 0.95em;
  }
  .page-about__btn-primary {
    padding: 12px 25px;
    font-size: 0.9em;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  .page-about__section-title {
    font-size: 1.8em;
    margin-bottom: 30px;
  }
  .page-about__sub-title {
    font-size: 1.5em;
  }
  .page-about__text-block {
    font-size: 0.9em;
  }
  .page-about__feature-item {
    padding: 20px;
  }
  .page-about__feature-title {
    font-size: 1.3em;
  }
  .page-about__contact-list li, .page-about__values-list li {
    font-size: 1em;
  }
  .page-about__faq-item summary {
    font-size: 1em;
    padding: 15px;
  }
  .page-about__faq-toggle {
    font-size: 1.2em;
  }
  .page-about__faq-answer {
    padding: 15px;
  }

  /* 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 {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-about__hero-section {
    padding-left: 0;
    padding-right: 0;
  }
  .page-about__hero-image {
    border-radius: 0; /* Full width */
  }
  .page-about__video-section {
    padding-top: 10px !important;
  }

  /* Nút bấm responsive */
  .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, .page-about__button-group, .page-about__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-wrap: wrap !important;
    gap: 10px;
  }
  .page-about__cta-buttons {
    display: flex;
    flex-direction: column;
  }
}