/* CSS cho trang Blog */

/* Body background from shared.css: #08162B (Deep Navy), dark type. Text should be light. */

.page-blog {
  color: #F3F8FF; /* Text Main */
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
}

.page-blog__hero-section {
  position: relative;
  width: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-bottom: 40px; /* Space below content */
}

.page-blog__hero-image {
  width: 100%;
  height: 675px;
  object-fit: cover;
  display: block;
  /* No filter property */
}

.page-blog__hero-content {
  max-width: 900px;
  text-align: center;
  padding: 30px 20px;
  margin-top: -100px; /* Overlap slightly with image for visual flow */
  background: rgba(16, 35, 63, 0.9); /* Card BG with transparency */
  border-radius: 10px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  position: relative;
  z-index: 2;
  border: 1px solid #244D84; /* Border */
}

.page-blog__main-title {
  font-size: clamp(2.2em, 4vw, 3.2em);
  font-weight: 700;
  color: #F2C14E; /* Gold */
  margin-bottom: 15px;
  line-height: 1.2;
  text-shadow: 0 0 10px rgba(242, 193, 78, 0.5);
}

.page-blog__description {
  font-size: 1.1em;
  color: #AFC4E8; /* Text Secondary */
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.page-blog__cta-button {
  display: inline-block;
  padding: 15px 30px;
  background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%); /* Button gradient */
  color: #F3F8FF; /* Text Main */
  text-decoration: none;
  border-radius: 8px;
  font-weight: bold;
  font-size: 1.1em;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-blog__cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3), 0 0 15px #4FA8FF; /* Glow */
}

.page-blog__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 15px;
}

.page-blog__section-title {
  font-size: 2.5em;
  font-weight: 700;
  color: #F2C14E; /* Gold */
  text-align: center;
  margin-top: 60px;
  margin-bottom: 40px;
  position: relative;
  padding-bottom: 15px;
}

.page-blog__section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: #1D5FD1; /* Auxiliary color */
  border-radius: 2px;
}

.page-blog__intro-text {
  font-size: 1.1em;
  color: #AFC4E8; /* Text Secondary */
  text-align: center;
  max-width: 800px;
  margin: -20px auto 40px auto;
}

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

.page-blog__post-card {
  background: #10233F; /* Card BG */
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #244D84; /* Border */
}

.page-blog__post-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4), 0 0 10px #4FA8FF; /* Glow */
}

.page-blog__post-thumbnail {
  width: 100%;
  height: 225px;
  object-fit: cover;
  display: block;
  /* No filter property */
}

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

.page-blog__post-title {
  font-size: 1.5em;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.3;
}

.page-blog__post-title a {
  color: #F3F8FF; /* Text Main */
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-blog__post-title a:hover {
  color: #F2C14E; /* Gold */
}

.page-blog__post-meta {
  font-size: 0.9em;
  color: #AFC4E8; /* Text Secondary */
  margin-bottom: 15px;
}

.page-blog__post-excerpt {
  font-size: 1em;
  color: #AFC4E8; /* Text Secondary */
  margin-bottom: 20px;
}

.page-blog__read-more-btn {
  display: inline-block;
  padding: 10px 20px;
  background: #1D5FD1; /* Auxiliary color */
  color: #F3F8FF; /* Text Main */
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
  font-size: 0.9em;
  transition: background-color 0.3s ease;
}

.page-blog__read-more-btn:hover {
  background: #2B73F6;
}

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

.page-blog__why-b789-blog {
  background: #08162B; /* Deep Navy */
  padding: 80px 0;
  margin-top: 60px;
  border-top: 1px solid #1B3357; /* Divider */
}

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

.page-blog__feature-item {
  background: #10233F; /* Card BG */
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
  border: 1px solid #244D84; /* Border */
}

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

.page-blog__feature-icon {
  width: 150px;
  height: auto;
  margin-bottom: 20px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  /* No filter property */
  min-width: 200px; /* Enforce minimum size */
  min-height: 150px;
  object-fit: contain;
}

.page-blog__feature-title {
  font-size: 1.6em;
  font-weight: 600;
  color: #F2C14E; /* Gold */
  margin-bottom: 15px;
}

.page-blog__feature-item p {
  color: #AFC4E8; /* Text Secondary */
  font-size: 1em;
}

.page-blog__faq-section {
  padding: 80px 0;
  background: #08162B; /* Deep Navy */
}

.page-blog__faq-list {
  margin-top: 40px;
}

details.page-blog__faq-item {
  margin-bottom: 15px;
  border-radius: 10px;
  border: 1px solid #244D84; /* Border */
  overflow: hidden;
  background: #10233F; /* Card BG */
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

details.page-blog__faq-item summary.page-blog__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}

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

details.page-blog__faq-item summary.page-blog__faq-question:hover {
  background: #1B3357; /* Slightly lighter Deep Navy */
}

.page-blog__faq-qtext {
  flex: 1;
  font-size: 1.2em;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: #F3F8FF; /* Text Main */
}

.page-blog__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: #F2C14E; /* Gold */
  flex-shrink: 0;
  margin-left: 15px;
  width: 32px;
  text-align: center;
  transition: transform 0.3s ease;
}

details.page-blog__faq-item[open] .page-blog__faq-toggle {
  transform: rotate(45deg);
}

details.page-blog__faq-item .page-blog__faq-answer {
  padding: 0 25px 20px;
  background: #08162B; /* Deep Navy */
  border-radius: 0 0 10px 10px;
  color: #AFC4E8; /* Text Secondary */
  font-size: 1em;
}

.page-blog__faq-answer p {
    margin-bottom: 10px;
    color: #AFC4E8; /* Text Secondary */
}

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

.page-blog__faq-answer a {
    color: #1D5FD1; /* Auxiliary color */
    text-decoration: underline;
}

.page-blog__faq-answer a:hover {
    color: #2B73F6;
}

.page-blog__cta-bottom {
  text-align: center;
  padding: 60px 0;
  background: linear-gradient(180deg, #113B7A 0%, #08162B 100%); /* Main color to Deep Navy */
  border-top: 1px solid #1B3357; /* Divider */
}

.page-blog__cta-title {
  font-size: 2.8em;
  font-weight: 700;
  color: #F2C14E; /* Gold */
  margin-bottom: 20px;
}

.page-blog__cta-text {
  font-size: 1.2em;
  color: #AFC4E8; /* Text Secondary */
  max-width: 800px;
  margin: 0 auto 40px auto;
}

.page-blog__cta-button--large {
  padding: 18px 40px;
  font-size: 1.25em;
}

/* ------------------------------------------------------------------------- */
/* Responsive Styles */
/* ------------------------------------------------------------------------- */

/* @media (max-width: 1024px) for Tablets */
@media (max-width: 1024px) {
  .page-blog__hero-image {
    height: 550px;
  }

  .page-blog__hero-content {
    margin-top: -80px;
    padding: 25px 15px;
  }

  .page-blog__main-title {
    font-size: clamp(2em, 5vw, 2.8em);
  }

  .page-blog__description {
    font-size: 1em;
  }

  .page-blog__posts-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
  }

  .page-blog__section-title {
    font-size: 2em;
    margin-top: 50px;
    margin-bottom: 30px;
  }

  .page-blog__intro-text {
    font-size: 1em;
    margin-bottom: 30px;
  }

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

  .page-blog__feature-title {
    font-size: 1.4em;
  }

  details.page-blog__faq-item summary.page-blog__faq-question {
    padding: 15px 20px;
  }

  .page-blog__faq-qtext {
    font-size: 1.1em;
  }

  .page-blog__faq-toggle {
    font-size: 24px;
    width: 28px;
  }

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

  .page-blog__cta-title {
    font-size: 2.2em;
  }

  .page-blog__cta-text {
    font-size: 1.1em;
  }
}

/* @media (max-width: 768px) for Mobile */
@media (max-width: 768px) {
  /* 1. Top section padding (Approx 10px top spacing) */
  .page-blog__hero-section {
    padding-top: 10px;
    padding-bottom: 20px;
  }

  .page-blog__hero-image {
    max-width: 100% !important;
    width: 100% !important;
    height: 350px;
  }

  .page-blog__hero-content {
    margin-top: -60px;
    padding: 20px 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-blog__main-title {
    font-size: clamp(1.8em, 7vw, 2.5em);
  }

  .page-blog__description {
    font-size: 0.95em;
    margin-bottom: 20px;
  }

  /* 2. Landing page dual-column modules (not directly applicable for blog post grid, but general container rule) */
  .page-blog__container,
  .page-blog__posts-grid,
  .page-blog__content-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-blog__section-title {
    font-size: 1.8em;
    margin-top: 40px;
    margin-bottom: 25px;
  }

  .page-blog__intro-text {
    font-size: 0.95em;
    margin-bottom: 25px;
  }

  .page-blog__post-card {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-blog__post-thumbnail {
    max-width: 100% !important;
    width: 100% !important;
    height: 180px;
  }

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

  .page-blog__read-more-btn {
    padding: 8px 15px;
    font-size: 0.85em;
  }

  .page-blog__why-b789-blog {
    padding: 60px 0;
  }

  .page-blog__feature-item {
    padding: 25px;
  }

  .page-blog__feature-icon {
    min-width: 150px; /* Adjust min-width for mobile, still >= 200px if possible */
    min-height: 120px;
    width: 150px; /* Explicit width for mobile to prevent overflow */
    height: auto;
  }

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

  .page-blog__faq-section {
    padding: 60px 0;
  }

  details.page-blog__faq-item summary.page-blog__faq-question {
    padding: 15px;
  }

  .page-blog__faq-qtext {
    font-size: 1em;
  }

  .page-blog__faq-toggle {
    font-size: 22px;
    width: 25px;
  }

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

  .page-blog__cta-bottom {
    padding: 40px 0;
  }

  .page-blog__cta-title {
    font-size: 1.8em;
  }

  .page-blog__cta-text {
    font-size: 1em;
    margin-bottom: 30px;
  }

  /* 3. Universal images and containers */
  .page-blog img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-blog__section,
  .page-blog__card,
  .page-blog__container,
  .page-blog__hero-section,
  .page-blog__latest-posts,
  .page-blog__why-b789-blog,
  .page-blog__faq-section,
  .page-blog__cta-bottom {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* 4. Buttons */
  .page-blog__cta-button,
  .page-blog__read-more-btn,
  .page-blog a[class*="button"],
  .page-blog 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;
    text-align: center;
  }

  .page-blog__view-all {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-blog__cta-bottom .page-blog__container {
    padding-left: 15px;
    padding-right: 15px;
  }
}