/* style/about.css */

/* Biến CSS */
:root {
  --primary-color: #007bff;
  --secondary-color: #ffc107;
  --text-light: #ffffff;
  --text-dark: #333333;
  --bg-dark: #121212;
  --bg-card-dark: rgba(255, 255, 255, 0.08);
  --border-color-dark: rgba(255, 255, 255, 0.15);
}

/* Reset cơ bản và kiểu chữ cho page-about */
.page-about {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-light); /* Do body background là #121212 (dark) */
  background-color: var(--bg-dark);
  padding-top: 100px; /* Điều chỉnh để không bị header cố định che mất nội dung */
}

.page-about h1, .page-about h2, .page-about h3, .page-about h4, .page-about h5, .page-about h6 {
  color: var(--text-light);
  margin-bottom: 15px;
  line-height: 1.3;
}

.page-about h1 {
  font-size: 44px;
  font-weight: bold;
  text-align: center;
}

.page-about h2 {
  font-size: 36px;
  font-weight: bold;
  text-align: center;
  margin-bottom: 40px;
}

.page-about h3 {
  font-size: 24px;
  font-weight: 600;
}

.page-about p {
  margin-bottom: 15px;
}

.page-about a {
  text-decoration: none;
  color: var(--primary-color);
  transition: color 0.3s ease;
}

.page-about a:hover {
  color: var(--secondary-color);
}

/* Container chung */
.page-about__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Các section chung */
.page-about__hero-section {
  background: linear-gradient(135deg, #0056b3, var(--primary-color));
  padding: 80px 0;
  text-align: center;
  color: var(--text-light);
  padding-top: 120px; /* Đảm bảo không bị header che */
}

.page-about__section-title {
  margin-bottom: 40px;
  color: var(--text-light);
}

.page-about__section-text {
  text-align: center;
  max-width: 800px;
  margin: 20px auto 40px auto;
  font-size: 18px;
  line-height: 1.7;
}

/* Button styles */
.page-about__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.page-about__cta-buttons--center {
  justify-content: center;
}

.page-about__cta-buttons--margin-top {
    margin-top: 40px;
}

.page-about__cta-button {
  display: inline-block;
  padding: 15px 35px;
  border-radius: 8px;
  font-size: 18px;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: none;
  cursor: pointer;
  max-width: 100%; /* Đảm bảo responsive */
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-about__cta-button--primary {
  background: var(--secondary-color);
  color: var(--text-dark);
}

.page-about__cta-button--primary:hover {
  background: #e0a800;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.page-about__cta-button--secondary {
  background: transparent;
  color: var(--text-light);
  border: 2px solid var(--text-light);
}

.page-about__cta-button--secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* Brand Section */
.page-about__brand-section {
  padding: 80px 0;
  background-color: var(--bg-dark);
}

.page-about__dark-section {
    background-color: #1a1a1a;
    padding: 80px 0;
}

.page-about__brand-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__brand-item {
  background: var(--bg-card-dark);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
}

.page-about__brand-item:hover {
  transform: translateY(-5px);
}

.page-about__brand-image {
  width: 150px; /* Đảm bảo kích thước tối thiểu 200px */
  height: 150px;
  object-fit: contain;
  margin-bottom: 20px;
  border-radius: 5px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.page-about__brand-item-title {
  color: var(--secondary-color);
  margin-bottom: 10px;
}

/* Advantages Section */
.page-about__advantages-section {
  padding: 80px 0;
  background-color: #0d0d0d;
}

.page-about__advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__advantage-card {
  background: var(--bg-card-dark);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
}

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

.page-about__advantage-image {
  width: 200px; /* Đảm bảo kích thước tối thiểu 200px */
  height: 200px;
  object-fit: cover;
  margin-bottom: 20px;
  border-radius: 8px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.page-about__advantage-title {
  color: var(--primary-color);
  margin-bottom: 10px;
}

/* FAQ Section */
.page-about__faq-section {
  padding: 80px 0;
}

.page-about__faq-list {
  max-width: 900px;
  margin: 40px auto 0 auto;
}

.page-about__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.page-about__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  background: #2a2a2a;
  border: 1px solid var(--border-color-dark);
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.page-about__faq-question:hover {
  background: #3a3a3a;
  border-color: rgba(255, 255, 255, 0.25);
}

.page-about__faq-question h3 {
  margin: 0;
  padding: 0;
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-light);
  pointer-events: none; /* Ngăn h3 chặn sự kiện click */
}

.page-about__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  line-height: 1;
  color: var(--secondary-color);
  transition: transform 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
  margin-left: 15px;
  pointer-events: none; /* Ngăn toggle chặn sự kiện click */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}

.page-about__faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
  padding: 0 25px;
  opacity: 0;
  background: #1f1f1f;
  color: #cccccc;
}

.page-about__faq-item.active .page-about__faq-answer {
  max-height: 2000px !important; /* Đảm bảo đủ cao để hiển thị mọi nội dung */
  padding: 20px 25px !important;
  opacity: 1;
  border-top: 1px solid var(--border-color-dark);
  border-radius: 0 0 8px 8px;
}

.page-about__faq-item.active .page-about__faq-toggle {
  color: var(--primary-color);
  transform: rotate(180deg);
}

/* Blog Section */
.page-about__blog-section {
  padding: 80px 0;
  background-color: #0d0d0d;
}

.page-about__blog-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-about__blog-item {
  background: var(--bg-card-dark);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about__blog-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-about__blog-link {
  display: block;
  color: inherit;
}

.page-about__blog-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

.page-about__blog-content {
  padding: 20px;
}

.page-about__blog-item-title {
  font-size: 20px;
  margin-bottom: 10px;
  color: var(--text-light);
}

.page-about__blog-item-title:hover {
  color: var(--secondary-color);
}

.page-about__blog-item-excerpt {
  font-size: 15px;
  color: #cccccc;
  margin-bottom: 15px;
}

.page-about__blog-item-date {
  font-size: 14px;
  color: #999999;
}

/* Responsive */
@media (max-width: 1024px) {
  .page-about__hero-section {
    padding: 100px 0 60px 0;
  }
  .page-about h1 {
    font-size: 38px;
  }
  .page-about h2 {
    font-size: 30px;
  }
}

@media (max-width: 768px) {
  .page-about {
    padding-top: 80px !important; /* Điều chỉnh cho mobile header */
    font-size: 15px;
  }
  .page-about__container {
    padding: 0 15px;
  }
  .page-about__hero-section {
    padding: 80px 0 40px 0;
    padding-top: 100px; /* Điều chỉnh cho mobile header */
  }
  .page-about__main-title {
    font-size: 32px;
  }
  .page-about__description {
    font-size: 16px;
  }
  .page-about__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-about__cta-button {
    width: 100% !important; /* Đảm bảo nút chiếm toàn bộ chiều rộng */
    padding: 12px 25px;
    font-size: 16px;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-about__section-title {
    font-size: 26px;
    margin-bottom: 30px;
  }
  .page-about__brand-section, .page-about__advantages-section, .page-about__faq-section, .page-about__blog-section {
    padding: 60px 0;
  }
  .page-about__brand-content, .page-about__advantages-grid, .page-about__blog-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-about__brand-item, .page-about__advantage-card {
    padding: 25px;
  }
  .page-about__faq-question {
    padding: 15px 20px;
  }
  .page-about__faq-question h3 {
    font-size: 16px;
  }
  .page-about__faq-toggle {
    font-size: 24px;
    width: 28px;
    height: 28px;
  }
  .page-about__faq-answer {
    padding: 0 20px;
  }
  .page-about__faq-item.active .page-about__faq-answer {
    padding: 15px 20px !important;
  }
  .page-about__blog-image {
    height: 180px;
  }
  .page-about__blog-item-title {
    font-size: 18px;
  }
  .page-about__blog-item-excerpt {
    font-size: 14px;
  }
  /* Ảnh responsive */
  .page-about img {
    max-width: 100% !important;
    height: auto !important;
    display: block !important;
    box-sizing: border-box !important;
  }
  .page-about__brand-image, .page-about__advantage-image {
    width: 100% !important;
    height: auto !important;
    max-width: 200px !important; /* Giữ tỷ lệ và không quá nhỏ */
  }
  .page-about__blog-image {
    width: 100% !important;
    height: auto !important;
  }
  .page-about__section, .page-about__card, .page-about__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }
}