/* style/about.css */
/* body đã xử lý padding-top cho header offset; các phần tử trong trang không được sử dụng lại biến này */
.page-about {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: #FFF3E6; /* Text Main */
  background-color: #0D0E12; /* Background */
  padding-bottom: 50px;
}

.page-about__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 10px; /* Padding nhỏ ở trên, body đã xử lý phần bù của header */
  background-color: #0D0E12;
  overflow: hidden;
}

.page-about__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  max-height: 600px;
}

.page-about__hero-content {
  position: relative;
  text-align: center;
  padding: 40px 20px;
  max-width: 900px;
  margin-top: -100px; /* Tạo hiệu ứng chồng lấn nhẹ, nhưng văn bản vẫn ở dưới hình ảnh */
  background: rgba(13, 14, 18, 0.8); /* Nền bán trong suốt để dễ đọc văn bản */
  border-radius: 8px;
  z-index: 1;
  box-sizing: border-box;
}

.page-about__main-title {
  font-size: clamp(2em, 4vw, 3.5em);
  font-weight: bold;
  color: #FF8C1A; /* Main brand color */
  margin-bottom: 20px;
  line-height: 1.2;
  letter-spacing: 1px;
}

.page-about__intro-text {
  font-size: 1.1em;
  margin-bottom: 30px;
  color: #FFF3E6;
}

.page-about__section {
  padding: 60px 20px;
  background-color: #0D0E12;
  color: #FFF3E6;
}

.page-about__section:nth-of-type(even) {
  background-color: #17191F; /* Card BG */
}

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

.page-about__section-title {
  font-size: 2.5em;
  color: #FF8C1A;
  text-align: center;
  margin-bottom: 40px;
  font-weight: bold;
}

.page-about__text-block {
  font-size: 1em;
  margin-bottom: 20px;
  color: #FFF3E6;
}

.page-about__image {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 30px auto;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.page-about__product-list,
.page-about__security-list,
.page-about__responsibility-list,
.page-about__vision-list,
.page-about__contact-list {
  list-style: none;
  padding: 0;
  margin: 0 0 30px 0;
}

.page-about__list-item {
  background-color: #17191F; /* Card BG */
  border-left: 5px solid #FF8C1A; /* Main brand color */
  padding: 15px 20px;
  margin-bottom: 10px;
  border-radius: 5px;
  color: #FFF3E6;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.page-about__list-item strong {
  color: #FFA53A; /* Auxiliary brand color */
}

.page-about__cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
}

.page-about__btn-primary,
.page-about__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-about__btn-primary {
  background: linear-gradient(180deg, #FFA53A 0%, #D96800 100%);
  color: #FFF3E6;
  border: none;
  box-shadow: 0 5px 15px rgba(255, 140, 26, 0.4);
}

.page-about__btn-primary:hover {
  background: linear-gradient(180deg, #D96800 0%, #FFA53A 100%);
  transform: translateY(-3px);
}

.page-about__btn-secondary {
  background-color: transparent;
  color: #FF8C1A;
  border: 2px solid #FF8C1A;
}

.page-about__btn-secondary:hover {
  background-color: #FF8C1A;
  color: #FFF3E6;
  transform: translateY(-3px);
}

.page-about__contact-list a {
  color: #FFA53A; /* Auxiliary brand color for links */
  text-decoration: none;
}

.page-about__contact-list a:hover {
  text-decoration: underline;
}

.page-about__faq-section {
  background-color: #17191F; /* Card BG */
}

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

.page-about__faq-item {
  background-color: #0D0E12; /* Background */
  border: 1px solid #A84F0C; /* 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: 1.1em;
  font-weight: bold;
  color: #FFA53A; /* Auxiliary brand color */
  cursor: pointer;
  background-color: #0D0E12;
  user-select: none;
  list-style: none; /* Loại bỏ dấu mặc định của summary */
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  position: relative;
}

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

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

.page-about__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
  color: #FF8C1A; /* Main brand color */
}

.page-about__faq-item[open] .page-about__faq-toggle {
  content: "−";
}

.page-about__faq-answer {
  padding: 15px 25px 20px;
  font-size: 1em;
  color: #FFF3E6;
  background-color: #17191F; /* Card BG */
  border-top: 1px solid #A84F0C; /* Border color */
}

.page-about__video-section {
  padding: 60px 20px;
  background-color: #0D0E12;
  text-align: center;
  padding-top: 10px;
}

.page-about__video-wrapper {
  position: relative;
  width: 100%;
  max-width: 1000px;
  margin: 0 auto 30px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
  background-color: black;
}

.page-about__video {
  width: 100%;
  height: auto;
  display: block;
  cursor: pointer;
}

.page-about__video-description {
  font-size: 1.1em;
  color: #FFF3E6;
  max-width: 800px;
  margin: 0 auto 30px;
}

/* Responsive styles */
@media (max-width: 1024px) {
  .page-about__hero-content {
    margin-top: -50px;
    padding: 30px 15px;
  }

  .page-about__main-title {
    font-size: clamp(1.8em, 5vw, 3em);
  }

  .page-about__intro-text {
    font-size: 1em;
  }

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

@media (max-width: 768px) {
  .page-about__hero-section {
    padding-top: 10px !important;
  }
  .page-about__hero-content {
    margin-top: 0;
    padding: 20px 15px;
    background: rgba(13, 14, 18, 0.9);
  }

  .page-about__main-title {
    font-size: clamp(1.5em, 6vw, 2.5em);
    margin-bottom: 15px;
  }

  .page-about__intro-text {
    font-size: 0.95em;
  }

  .page-about__section {
    padding: 40px 15px;
  }

  .page-about__section-title {
    font-size: 1.8em;
    margin-bottom: 30px;
  }

  .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: 1em;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

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

  .page-about__container,
  .page-about__video-section,
  .page-about__video-container,
  .page-about__video-wrapper,
  .page-about__faq-list,
  .page-about__cta-buttons {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }

  .page-about__list-item {
    padding: 12px 15px;
    font-size: 0.95em;
  }

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

  .page-about__faq-answer {
    padding: 10px 20px 15px;
    font-size: 0.95em;
  }
  .page-about__video-section {
    padding-top: 10px !important;
  }
}

@media (max-width: 480px) {
  .page-about__main-title {
    font-size: clamp(1.2em, 7vw, 2em);
  }

  .page-about__section-title {
    font-size: 1.5em;
  }
}