/* style/blog.css */
/* body đã padding-top: var(--header-offset) từ shared.css, không lặp lại ở đây */

:root {
  --bg-primary: #08160F;
  --bg-card: #11271B;
  --text-main: #F2FFF6;
  --text-secondary: #A7D9B8;
  --btn-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --border-color: #2E7A4E;
  --glow-color: #57E38D;
  --gold-color: #F2C14E;
  --divider-color: #1E3A2A;
  --deep-green: #0A4B2C;
}

.page-blog {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-main); /* Mặc định chữ sáng trên nền tối */
  background-color: var(--bg-primary);
}

.page-blog__section {
  padding: 60px 0;
  position: relative;
}

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

/* Hero Section */
.page-blog__hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-top: 10px; /* Small padding top, body handles header offset */
  padding-bottom: 60px;
  background-color: var(--bg-primary);
}

.page-blog__hero-image-wrapper {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  box-sizing: border-box;
  margin-bottom: 30px;
}

.page-blog__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 8px;
}

.page-blog__hero-content {
  max-width: 900px;
  padding: 0 20px;
}

.page-blog__main-title {
  font-size: clamp(2em, 5vw, 2.8em); /* Use clamp for H1 font size */
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-main);
  margin-bottom: 20px;
  text-shadow: 0 0 10px rgba(87, 227, 141, 0.4);
}

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

/* Buttons */
.page-blog__btn-primary,
.page-blog__btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-blog__btn-primary {
  background: var(--btn-gradient);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 15px rgba(42, 209, 111, 0.4);
}

.page-blog__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(42, 209, 111, 0.6);
}

.page-blog__btn-secondary {
  background: transparent;
  color: var(--glow-color);
  border: 2px solid var(--glow-color);
  margin-left: 20px;
}

.page-blog__btn-secondary:hover {
  background: var(--glow-color);
  color: var(--bg-primary);
}

.page-blog__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
}

/* Section Titles */
.page-blog__section-title {
  font-size: 2.2em;
  font-weight: 700;
  color: var(--text-main);
  text-align: center;
  margin-bottom: 40px;
  text-shadow: 0 0 8px rgba(87, 227, 141, 0.3);
}

.page-blog__section-description {
  font-size: 1.05em;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 50px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Latest Posts Grid */
.page-blog__latest-posts {
  background-color: var(--bg-primary);
}

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

.page-blog__post-card {
  background-color: var(--bg-card);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border-color);
}

.page-blog__post-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.page-blog__post-link {
  text-decoration: none;
  display: block;
  color: inherit;
}

.page-blog__post-thumbnail {
  width: 100%;
  height: 225px;
  object-fit: cover;
  display: block;
}

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

.page-blog__post-title {
  font-size: 1.3em;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
  line-height: 1.4;
}

.page-blog__post-meta {
  font-size: 0.9em;
  color: var(--text-secondary);
  margin-bottom: 15px;
}

.page-blog__post-excerpt {
  font-size: 1em;
  color: var(--text-secondary);
}

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

/* Featured Topics */
.page-blog__featured-topics {
  background-color: var(--deep-green);
  color: var(--text-main);
}

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

.page-blog__topic-card {
  background-color: var(--bg-card);
  border-radius: 10px;
  padding: 25px;
  text-align: center;
  text-decoration: none;
  color: var(--text-main);
  transition: transform 0.3s ease, background-color 0.3s ease;
  border: 1px solid var(--border-color);
}

.page-blog__topic-card:hover {
  transform: translateY(-5px);
  background-color: rgba(17, 39, 27, 0.8);
}

.page-blog__topic-title {
  font-size: 1.4em;
  font-weight: 600;
  color: var(--glow-color);
  margin-bottom: 10px;
}

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

/* CTA Bottom */
.page-blog__cta-bottom {
  background-color: var(--bg-primary);
  text-align: center;
}

/* FAQ Section */
.page-blog__faq-section {
  background-color: var(--bg-card);
  color: var(--text-main);
}

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

.page-blog__faq-item {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-blog__faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1.1em;
  color: var(--text-main);
  background-color: var(--bg-card);
  transition: background-color 0.3s ease;
}

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

.page-blog__faq-item summary:hover {
  background-color: var(--deep-green);
}

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

.page-blog__faq-item[open] .page-blog__faq-toggle {
  content: '−'; /* Changed by JS */
}

.page-blog__faq-answer {
  padding: 15px 25px 20px;
  font-size: 1em;
  color: var(--text-secondary);
  background-color: var(--bg-primary);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-blog__main-title {
    font-size: clamp(1.8em, 4.5vw, 2.5em);
  }
  .page-blog__section-title {
    font-size: 2em;
  }
  .page-blog__posts-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
  .page-blog__topic-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }
}

@media (max-width: 768px) {
  .page-blog {
    font-size: 16px;
    line-height: 1.6;
  }
  .page-blog__hero-section,
  .page-blog__section {
    padding: 40px 0;
  }
  .page-blog__container {
    padding: 0 15px !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-blog__main-title {
    font-size: clamp(1.5em, 6vw, 2em);
  }
  .page-blog__description {
    font-size: 1em;
  }
  .page-blog__btn-primary,
  .page-blog__btn-secondary {
    width: 100% !important;
    margin-left: 0 !important;
    margin-bottom: 15px;
    padding: 12px 20px;
    max-width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  .page-blog__cta-buttons {
    flex-direction: column;
    gap: 10px;
  }
  .page-blog__posts-grid,
  .page-blog__topic-grid {
    grid-template-columns: 1fr;
  }
  .page-blog__post-card {
    margin-bottom: 20px;
  }
  .page-blog__post-thumbnail {
    height: 180px;
  }
  .page-blog__post-title {
    font-size: 1.1em;
  }
  .page-blog__hero-image,
  .page-blog__post-thumbnail {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-blog__hero-image-wrapper,
  .page-blog__post-card,
  .page-blog__topic-card,
  .page-blog__faq-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }
  .page-blog__hero-section {
    padding-top: 10px !important; /* body handles header offset */
  }
}

@media (max-width: 480px) {
  .page-blog__main-title {
    font-size: clamp(1.4em, 8vw, 1.8em);
  }
  .page-blog__section-title {
    font-size: 1.8em;
  }
  .page-blog__btn-primary,
  .page-blog__btn-secondary {
    padding: 10px 15px;
  }
}