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

.page-blog {
  font-family: 'Arial', sans-serif;
  color: #333333; /* Default text color for light background */
  line-height: 1.6;
}

.page-blog__hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
  padding-top: 10px; /* Small top padding, body handles header offset */
  background-color: #FFFFFF;
}

.page-blog__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  margin-bottom: 30px;
}

.page-blog__hero-image {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.page-blog__hero-content {
  max-width: 900px;
  margin: 0 auto;
}

.page-blog__main-title {
  font-size: clamp(2em, 4vw, 3.5em); /* Responsive font size for H1 */
  font-weight: 700;
  color: #26A9E0;
  margin-bottom: 20px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.page-blog__hero-description {
  font-size: 1.1em;
  color: #555555;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

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

.page-blog__btn-primary,
.page-blog__btn-secondary {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
}

.page-blog__btn-primary {
  background-color: #26A9E0;
  color: #FFFFFF;
  border: 2px solid #26A9E0;
}

.page-blog__btn-primary:hover {
  background-color: #1a8ccf;
  border-color: #1a8ccf;
}

.page-blog__btn-secondary {
  background-color: #FFFFFF;
  color: #26A9E0;
  border: 2px solid #26A9E0;
}

.page-blog__btn-secondary:hover {
  background-color: #e0f2f7;
  color: #26A9E0;
}

.page-blog__content-area {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  background-color: #FFFFFF;
}

.page-blog__section-title {
  font-size: 2.2em;
  font-weight: 700;
  color: #26A9E0;
  margin-bottom: 30px;
  text-align: center;
  padding-top: 20px;
}

.page-blog__introduction-section p {
  font-size: 1.05em;
  margin-bottom: 15px;
  color: #444444;
}

.page-blog__introduction-section p a {
  color: #26A9E0;
  text-decoration: none;
}

.page-blog__introduction-section p a:hover {
  text-decoration: underline;
}

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

.page-blog__post-card {
  background-color: #FFFFFF;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.page-blog__post-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-blog__post-link {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.page-blog__post-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.page-blog__card-content {
  padding: 20px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.page-blog__card-title {
  font-size: 1.4em;
  font-weight: 600;
  color: #26A9E0;
  margin-bottom: 10px;
}

.page-blog__card-excerpt {
  font-size: 0.95em;
  color: #555555;
  margin-bottom: 15px;
  flex-grow: 1;
}

.page-blog__post-date {
  font-size: 0.85em;
  color: #777777;
  margin-top: auto;
}

.page-blog__view-all-button-container {
  text-align: center;
  margin-top: 50px;
}

.page-blog__categories-section {
  padding: 60px 20px;
  background-color: #26A9E0; /* Dark background */
  color: #FFFFFF; /* Light text */
}

.page-blog__categories-section .page-blog__section-title {
  color: #FFFFFF;
  margin-bottom: 40px;
}

.page-blog__category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
}

.page-blog__category-card {
  background-color: #FFFFFF;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
  text-decoration: none;
  color: #333333;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-blog__category-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

.page-blog__category-title {
  font-size: 1.3em;
  font-weight: 600;
  color: #26A9E0;
  margin-bottom: 10px;
}

.page-blog__category-card p {
  font-size: 0.95em;
  color: #555555;
}

.page-blog__category-card a {
  color: #26A9E0;
  text-decoration: none;
}

.page-blog__about-pkbet {
  padding: 60px 20px;
}

.page-blog__about-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
}

.page-blog__about-content p {
  font-size: 1.05em;
  color: #444444;
  text-align: justify;
}

.page-blog__about-content p a {
  color: #26A9E0;
  text-decoration: none;
}

.page-blog__about-content p a:hover {
  text-decoration: underline;
}

.page-blog__about-image {
  width: 100%;
  max-width: 800px;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  margin-top: 20px;
}

.page-blog__faq-section {
  padding: 60px 20px;
  background-color: #f8f8f8;
}

.page-blog__faq-list {
  max-width: 900px;
  margin: 0 auto;
  margin-top: 30px;
}

.page-blog__faq-item {
  background-color: #FFFFFF;
  border-radius: 8px;
  margin-bottom: 15px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.page-blog__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.1em;
  font-weight: 600;
  color: #26A9E0;
  cursor: pointer;
  background-color: #eaf8ff;
  border-bottom: 1px solid #d0edff;
  list-style: none; /* For <details> summary */
}

.page-blog__faq-question::-webkit-details-marker {
  display: none; /* For <details> summary */
}

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

.page-blog__faq-toggle {
  font-size: 1.5em;
  line-height: 1;
  margin-left: 15px;
  color: #26A9E0;
}

.page-blog__faq-answer {
  padding: 0 25px 20px;
  font-size: 1em;
  color: #555555;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.page-blog__faq-item[open] .page-blog__faq-answer {
  max-height: 500px; /* Adjust as needed */
  padding-top: 15px;
}

/* Fallback for .page-blog__faq-item.active .page-blog__faq-answer if not using <details> */
.page-blog__faq-item.active .page-blog__faq-answer {
  max-height: 2000px !important; /* Larger value for smooth transition */
  padding-top: 15px;
}

.page-blog__faq-answer p a {
  color: #26A9E0;
  text-decoration: none;
}

.page-blog__faq-answer p a:hover {
  text-decoration: underline;
}

.page-blog__cta-bottom {
  padding: 80px 20px;
  background-color: #26A9E0; /* Brand color background */
  color: #FFFFFF; /* White text */
  text-align: center;
}

.page-blog__cta-bottom .page-blog__section-title {
  color: #FFFFFF;
  margin-bottom: 25px;
}

.page-blog__cta-bottom p {
  font-size: 1.1em;
  max-width: 800px;
  margin: 0 auto 40px;
}

.page-blog__cta-bottom p a {
  color: #FFFFFF;
  text-decoration: underline;
}

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

  .page-blog__main-title {
    font-size: clamp(1.8em, 8vw, 2.5em); /* Smaller H1 on mobile */
  }

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

  .page-blog__cta-buttons {
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
  }

  .page-blog__btn-primary,
  .page-blog__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-blog__content-area,
  .page-blog__categories-section,
  .page-blog__faq-section,
  .page-blog__cta-bottom {
    padding: 30px 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-blog__section-title {
    font-size: 1.8em;
    margin-bottom: 20px;
  }

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

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

  .page-blog__card-title {
    font-size: 1.2em;
  }

  .page-blog__category-grid {
    grid-template-columns: 1fr;
  }

  .page-blog__about-content {
    flex-direction: column;
  }

  .page-blog__about-image {
    max-width: 100%;
  }

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

  .page-blog__faq-answer {
    padding: 0 20px 15px;
  }

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

  .page-blog__hero-image-wrapper,
  .page-blog__post-card,
  .page-blog__category-card,
  .page-blog__about-content,
  .page-blog__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
}

/* Ensuring content area images are not too small */
.page-blog__content-area img,
.page-blog__post-card img,
.page-blog__about-image {
  min-width: 200px;
  min-height: 200px;
}

/* Color contrast fixes based on body background (default light) */
.page-blog__light-bg {
  background-color: #FFFFFF;
  color: #333333;
}

.page-blog__dark-bg {
  background-color: #26A9E0;
  color: #FFFFFF;
}

.page-blog__category-card {
  background-color: #FFFFFF;
  color: #333333;
}

.page-blog__category-card p {
  color: #555555;
}

.page-blog__faq-item {
  background-color: #FFFFFF;
  color: #333333;
}

.page-blog__faq-question {
  background-color: #eaf8ff;
  color: #26A9E0;
}

.page-blog__faq-toggle {
  color: #26A9E0;
}

.page-blog__faq-answer p {
  color: #555555;
}

.page-blog__faq-answer p a {
  color: #26A9E0;
}