:root {
  --main-color: #113B7A;
  --auxiliary-color: #1D5FD1;
  --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
  --card-bg-color: #10233F;
  --text-main-color: #F3F8FF;
  --text-secondary-color: #AFC4E8;
  --border-color: #244D84;
  --glow-color: #4FA8FF;
  --gold-color: #F2C14E;
  --divider-color: #1B3357;
  --deep-navy-color: #08162B;
}

.page-tin-tuc {
  font-family: Arial, sans-serif;
  color: var(--text-main-color); /* Default text color for the page */
  line-height: 1.6;
  background-color: var(--deep-navy-color); /* Inherited from body or set as fallback */
}

.page-tin-tuc__container {
  max-width: 1170px;
  margin: 0 auto;
  padding: 0 16px;
  box-sizing: border-box;
}

/* Hero Section (Title and Intro) */
.page-tin-tuc__hero-section {
  padding-top: 10px; /* Small top padding, body handles header offset */
  padding-bottom: 60px;
  text-align: center;
  background-color: var(--deep-navy-color);
  color: var(--text-main-color);
}

.page-tin-tuc__main-title {
  font-size: clamp(2em, 3.5vw, 2.8em);
  font-weight: 700;
  color: var(--gold-color); /* H1 can use gold for emphasis */
  margin-bottom: 15px;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.page-tin-tuc__intro-text {
  font-size: 1.1em;
  color: var(--text-secondary-color);
  max-width: 800px;
  margin: 0 auto 30px;
}

.page-tin-tuc__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
  flex-wrap: wrap; /* Allow buttons to wrap on smaller screens */
}

.page-tin-tuc__btn-primary,
.page-tin-tuc__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 30px;
  border-radius: 8px;
  font-size: 1.1em;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s ease;
  min-width: 180px;
  box-sizing: border-box;
  max-width: 100%; /* Ensure responsiveness */
  white-space: normal; /* Allow text wrapping */
  word-wrap: break-word; /* Allow text breaking */
}

.page-tin-tuc__btn-primary {
  background: var(--button-gradient);
  color: var(--text-main-color);
  border: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-tin-tuc__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.page-tin-tuc__btn-secondary {
  background-color: transparent;
  color: var(--auxiliary-color);
  border: 2px solid var(--auxiliary-color);
}

.page-tin-tuc__btn-secondary:hover {
  background-color: var(--auxiliary-color);
  color: var(--deep-navy-color); /* Dark text on light background for hover */
}

/* News List Section */
.page-tin-tuc__news-list-section {
  padding: 60px 0;
  background-color: var(--card-bg-color); /* Dark background for this section */
  color: var(--text-main-color);
}

.page-tin-tuc__section-title {
  font-size: clamp(1.8em, 3vw, 2.2em);
  font-weight: 700;
  color: var(--gold-color);
  text-align: center;
  margin-bottom: 40px;
}

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

.page-tin-tuc__news-card {
  background-color: var(--deep-navy-color); /* Slightly darker than section background */
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.page-tin-tuc__news-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

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

.page-tin-tuc__news-image {
  width: 100%;
  height: 220px; /* Fixed height for consistent card images */
  object-fit: cover;
  display: block;
}

.page-tin-tuc__news-content {
  padding: 20px;
  flex-grow: 1; /* Allow content to grow and fill space */
}

.page-tin-tuc__news-date {
  display: block;
  font-size: 0.9em;
  color: var(--text-secondary-color);
  margin-bottom: 10px;
}

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

.page-tin-tuc__news-title:hover {
  color: var(--gold-color); /* Hover effect for titles */
}

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

/* Pagination */
.page-tin-tuc__pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 50px;
}

.page-tin-tuc__pagination-link,
.page-tin-tuc__pagination-next {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 6px;
  background-color: var(--deep-navy-color);
  color: var(--text-main-color);
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.3s ease, color 0.3s ease;
  border: 1px solid var(--border-color);
}

.page-tin-tuc__pagination-link:hover,
.page-tin-tuc__pagination-next:hover {
  background-color: var(--auxiliary-color);
  color: var(--deep-navy-color);
}

.page-tin-tuc__pagination-link--active {
  background-color: var(--auxiliary-color);
  color: var(--deep-navy-color);
  border-color: var(--auxiliary-color);
}

.page-tin-tuc__pagination-next {
  width: auto;
  padding: 0 15px;
}

/* FAQ Section */
.page-tin-tuc__faq-section {
  padding: 60px 0;
  background-color: var(--deep-navy-color);
  color: var(--text-main-color);
}

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

.page-tin-tuc__faq-item {
  background-color: var(--card-bg-color);
  border-radius: 10px;
  margin-bottom: 15px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.page-tin-tuc__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  font-size: 1.2em;
  font-weight: 600;
  color: var(--text-main-color);
  cursor: pointer;
  list-style: none; /* Remove default marker for summary */
  position: relative;
  user-select: none;
}

.page-tin-tuc__faq-question::-webkit-details-marker {
  display: none; /* Hide default marker for webkit browsers */
}

.page-tin-tuc__faq-question::marker {
  display: none; /* Hide default marker for other browsers */
}

.page-tin-tuc__faq-qtext {
  flex-grow: 1;
}

.page-tin-tuc__faq-toggle {
  font-size: 1.5em;
  font-weight: 300;
  color: var(--gold-color);
  margin-left: 15px;
  line-height: 1;
  transition: transform 0.3s ease;
}

.page-tin-tuc__faq-item[open] .page-tin-tuc__faq-toggle {
  transform: rotate(45deg); /* Rotate plus to form an 'x' or simply change to minus */
}

.page-tin-tuc__faq-answer {
  padding: 0 25px 20px;
  font-size: 1em;
  color: var(--text-secondary-color);
  line-height: 1.7;
}

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

/* --- Responsive Styles --- */
@media (max-width: 1024px) {
  .page-tin-tuc__main-title {
    font-size: 2.5em;
  }
  .page-tin-tuc__section-title {
    font-size: 2em;
  }
  .page-tin-tuc__news-image {
    height: 180px;
  }
}

@media (max-width: 768px) {
  /* HERO section */
  .page-tin-tuc__hero-section {
    padding-top: 10px !important; /* Specific top padding for mobile, body handles offset */
    padding-bottom: 40px;
  }
  .page-tin-tuc__container {
    padding: 0 15px;
  }
  .page-tin-tuc__main-title {
    font-size: 2em; /* Smaller H1 for mobile */
    margin-bottom: 10px;
  }
  .page-tin-tuc__intro-text {
    font-size: 1em;
    margin-bottom: 25px;
  }
  .page-tin-tuc__cta-buttons {
    flex-direction: column; /* Stack buttons vertically */
    gap: 15px;
    width: 100% !important;
    max-width: 100% !important;
    padding-left: 15px;
    padding-right: 15px;
    box-sizing: border-box !important;
  }
  .page-tin-tuc__btn-primary,
  .page-tin-tuc__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding-left: 15px !important;
    padding-right: 15px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  /* News List Section */
  .page-tin-tuc__news-list-section {
    padding: 40px 0;
  }
  .page-tin-tuc__section-title {
    font-size: 1.8em;
    margin-bottom: 30px;
  }
  .page-tin-tuc__news-grid {
    grid-template-columns: 1fr; /* Single column for news cards */
    gap: 20px;
  }
  .page-tin-tuc__news-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important; /* Ensure images are responsive */
  }
  .page-tin-tuc__news-card {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }
  .page-tin-tuc__news-content {
    padding: 15px;
  }
  .page-tin-tuc__news-title {
    font-size: 1.2em;
  }
  .page-tin-tuc__news-excerpt {
    font-size: 0.95em;
  }

  /* Pagination */
  .page-tin-tuc__pagination {
    margin-top: 40px;
    flex-wrap: wrap;
    padding: 0 15px;
  }
  .page-tin-tuc__pagination-link,
  .page-tin-tuc__pagination-next {
    width: 35px;
    height: 35px;
    font-size: 0.9em;
  }
  .page-tin-tuc__pagination-next {
    padding: 0 10px;
  }

  /* FAQ Section */
  .page-tin-tuc__faq-section {
    padding: 40px 0;
  }
  .page-tin-tuc__faq-question {
    font-size: 1.1em;
    padding: 15px 20px;
  }
  .page-tin-tuc__faq-answer {
    padding: 0 20px 15px;
    font-size: 0.95em;
  }
  .page-tin-tuc__faq-toggle {
    font-size: 1.3em;
  }

  /* General image and container responsiveness */
  .page-tin-tuc img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-tin-tuc__section,
  .page-tin-tuc__card,
  .page-tin-tuc__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  /* Specific override for faq-item which has internal padding */
  .page-tin-tuc__faq-item {
    padding-left: 0 !important;
    padding-right: 0 !important;
  }
}