/* Biến màu sắc */
:root {
  --color-primary: #11A84E;
  --color-secondary: #22C768;
  --color-background-dark: #08160F;
  --color-card-bg: #11271B;
  --color-text-main: #F2FFF6;
  --color-text-secondary: #A7D9B8;
  --color-border: #2E7A4E;
  --color-button-gradient-start: #2AD16F;
  --color-button-gradient-end: #13994A;
  --color-glow: #57E38D;
  --color-gold: #F2C14E;
  --color-divider: #1E3A2A;
  --color-deep-green: #0A4B2C;
}

.page-news {
  font-family: Arial, sans-serif;
  color: var(--color-text-main); /* Mặc định chữ sáng trên nền tối */
  background-color: var(--color-background-dark);
}

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

.page-news__section {
  padding: 60px 0;
  text-align: center;
}

.page-news__section-title {
  font-size: clamp(28px, 4vw, 42px);
  color: var(--color-text-main);
  margin-bottom: 20px;
  font-weight: bold;
  line-height: 1.2;
}

.page-news__section-description {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 800px;
  margin: 0 auto 40px;
  line-height: 1.6;
}

/* Hero Section */
.page-news__hero-section {
  padding-top: 10px; /* Chỉ 10px vì body đã có padding-top từ shared.css */
  position: relative;
  overflow: hidden;
  background-color: var(--color-deep-green);
}

.page-news__hero-image {
  width: 100%;
  height: 500px;
  overflow: hidden;
  position: relative;
}

.page-news__hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-news__hero-content {
  padding: 60px 20px;
  text-align: center;
}

.page-news__main-title {
  font-size: clamp(36px, 5vw, 56px);
  color: var(--color-gold);
  margin-bottom: 25px;
  font-weight: 700;
  line-height: 1.1;
  text-shadow: 0 0 10px rgba(242, 193, 78, 0.4);
}

.page-news__description {
  font-size: 19px;
  color: var(--color-text-main);
  max-width: 900px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

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

.page-news__btn-primary,
.page-news__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 18px;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  min-width: 180px;
}

.page-news__btn-primary {
  background: linear-gradient(180deg, var(--color-button-gradient-start) 0%, var(--color-button-gradient-end) 100%);
  color: var(--color-text-main);
  border: 2px solid transparent;
  box-shadow: 0 4px 15px rgba(34, 199, 104, 0.4);
}

.page-news__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(34, 199, 104, 0.6);
}

.page-news__btn-secondary {
  background: transparent;
  color: var(--color-gold);
  border: 2px solid var(--color-gold);
}

.page-news__btn-secondary:hover {
  background: var(--color-gold);
  color: var(--color-background-dark);
  transform: translateY(-3px);
}

/* Updates Section */
.page-news__updates-section {
  background-color: var(--color-background-dark);
}

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

.page-news__card {
  background-color: var(--color-card-bg);
  border-radius: 10px;
  overflow: hidden;
  text-align: left;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  color: var(--color-text-main);
}

.page-news__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

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

.page-news__card-title {
  font-size: 22px;
  font-weight: bold;
  padding: 20px 25px 10px;
  color: var(--color-text-main);
}

.page-news__card-text {
  font-size: 16px;
  color: var(--color-text-secondary);
  padding: 0 25px 20px;
  line-height: 1.6;
  flex-grow: 1;
}

.page-news__card-link {
  display: inline-block;
  padding: 10px 25px 20px;
  color: var(--color-gold);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

.page-news__card-link:hover {
  color: var(--color-glow);
  text-decoration: underline;
}

/* Promotions Section */
.page-news__promotions-section {
  background-color: var(--color-deep-green);
  padding-bottom: 80px;
}

.page-news__promo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-top: 40px;
}

.page-news__promo-card {
  background-color: var(--color-card-bg);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
}

.page-news__promo-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
}

.page-news__promo-content {
  padding: 25px;
  text-align: left;
  flex-grow: 1;
}

.page-news__promo-title {
  font-size: 24px;
  font-weight: bold;
  margin-bottom: 15px;
  color: var(--color-text-main);
}

.page-news__promo-text {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 25px;
}

/* Download Guide Section */
.page-news__download-guide {
  background-color: var(--color-background-dark);
}

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

.page-news__guide-item {
  background-color: var(--color-card-bg);
  border-radius: 10px;
  padding: 30px;
  text-align: left;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: var(--color-text-main);
}

.page-news__guide-title {
  font-size: 24px;
  font-weight: bold;
  color: var(--color-gold);
  margin-bottom: 15px;
}

.page-news__guide-item p {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 25px;
  flex-grow: 1;
}

.page-news__center-cta {
  margin-top: 50px;
  text-align: center;
}

/* Events Section */
.page-news__events-section {
  background-color: var(--color-deep-green);
}

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

.page-news__article-card {
  background-color: var(--color-card-bg);
  border-radius: 10px;
  overflow: hidden;
  text-align: left;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  color: var(--color-text-main);
}

.page-news__article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

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

.page-news__article-title {
  font-size: 22px;
  font-weight: bold;
  padding: 20px 25px 10px;
  color: var(--color-text-main);
}

.page-news__article-text {
  font-size: 16px;
  color: var(--color-text-secondary);
  padding: 0 25px 20px;
  line-height: 1.6;
  flex-grow: 1;
}

.page-news__article-link {
  display: inline-block;
  padding: 10px 25px 20px;
  color: var(--color-gold);
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s ease;
}

.page-news__article-link:hover {
  color: var(--color-glow);
  text-decoration: underline;
}

/* Security Section */
.page-news__security-section {
  background-color: var(--color-background-dark);
  padding-bottom: 80px;
}

.page-news__security-content {
  display: flex;
  flex-direction: row;
  gap: 40px;
  align-items: center;
  margin-top: 40px;
}

.page-news__security-image {
  width: 50%;
  height: auto;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.page-news__security-text {
  width: 50%;
  text-align: left;
  background-color: var(--color-card-bg);
  padding: 30px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
}

.page-news__security-subtitle {
  font-size: 22px;
  font-weight: bold;
  color: var(--color-text-main);
  margin-bottom: 15px;
}

.page-news__security-text p {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

/* FAQ Section */
.page-news__faq-section {
  background-color: var(--color-deep-green);
}

.page-news__faq-list {
  margin-top: 40px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

details.page-news__faq-item {
  margin-bottom: 15px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  overflow: hidden;
  background-color: var(--color-card-bg);
  color: var(--color-text-main);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

details.page-news__faq-item summary.page-news__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;
  color: var(--color-text-main);
}

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

details.page-news__faq-item summary.page-news__faq-question:hover {
  background-color: rgba(34, 199, 104, 0.1);
}

.page-news__faq-qtext {
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--color-text-main);
}

.page-news__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: var(--color-gold);
  flex-shrink: 0;
  margin-left: 15px;
  width: 30px;
  text-align: center;
  line-height: 1;
}

details.page-news__faq-item .page-news__faq-answer {
  padding: 0 25px 25px;
  background-color: var(--color-deep-green);
  border-radius: 0 0 10px 10px;
  color: var(--color-text-secondary);
  text-align: left;
  line-height: 1.7;
}

.page-news__faq-answer p {
  margin: 0;
  padding-top: 10px;
  font-size: 16px;
  color: var(--color-text-secondary);
}

/* Conclusion Section */
.page-news__conclusion-section {
  background-color: var(--color-background-dark);
  padding-top: 80px;
}

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

/* Tablet (max-width: 1024px) */
@media (max-width: 1024px) {
  .page-news__container {
    padding: 0 15px;
  }

  .page-news__section {
    padding: 40px 0;
  }

  .page-news__hero-image {
    height: 400px;
  }

  .page-news__hero-content {
    padding: 40px 15px;
  }

  .page-news__main-title {
    font-size: clamp(32px, 4.5vw, 48px);
  }

  .page-news__description {
    font-size: 17px;
  }

  .page-news__card-title {
    font-size: 20px;
  }

  .page-news__promo-title {
    font-size: 22px;
  }

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

  .page-news__security-image,
  .page-news__security-text {
    width: 100%;
  }
}

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
  .page-news__section {
    padding: 30px 0;
  }

  .page-news__section-title {
    font-size: clamp(24px, 6vw, 36px);
    padding: 0 15px;
  }

  .page-news__section-description {
    font-size: 16px;
    padding: 0 15px;
    margin-bottom: 30px;
  }

  /* HERO 主图区域 */
  .page-news__hero-section {
    padding-top: 10px;
  }

  .page-news__hero-image {
    height: 300px;
  }

  .page-news__hero-image img {
    object-fit: contain !important; /* Force contain for mobile */
    aspect-ratio: unset !important; /* Reset aspect ratio */
  }

  .page-news__hero-content {
    padding: 30px 15px;
  }

  .page-news__main-title {
    font-size: clamp(28px, 7vw, 40px);
    margin-bottom: 15px;
  }

  .page-news__description {
    font-size: 15px;
    margin-bottom: 30px;
  }

  .page-news__cta-buttons {
    flex-direction: column;
    gap: 15px;
    padding: 0 15px;
  }

  .page-news__btn-primary,
  .page-news__btn-secondary {
    max-width: 100% !important;
    width: 100% !important;
    font-size: 16px;
    padding: 12px 20px;
  }

  /* Product/Updates Grid */
  .page-news__content-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 15px;
  }

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

  .page-news__card-title {
    font-size: 18px;
    padding: 15px 20px 8px;
  }

  .page-news__card-text {
    font-size: 14px;
    padding: 0 20px 15px;
  }

  .page-news__card-link {
    padding: 8px 20px 15px;
  }

  /* Promotions Section */
  .page-news__promo-card {
    flex-direction: column;
    padding: 0;
    margin: 0 15px;
  }

  .page-news__promo-image {
    height: 200px;
  }

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

  .page-news__promo-title {
    font-size: 20px;
    margin-bottom: 10px;
  }

  .page-news__promo-text {
    font-size: 14px;
    margin-bottom: 20px;
  }

  /* Download Guide */
  .page-news__guide-steps {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 15px;
  }

  .page-news__guide-item {
    padding: 20px;
  }

  .page-news__guide-title {
    font-size: 20px;
  }

  .page-news__guide-item p {
    font-size: 14px;
  }

  .page-news__center-cta {
    margin-top: 30px;
    padding: 0 15px;
  }

  /* Events Section */
  .page-news__article-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 15px;
  }

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

  .page-news__article-title {
    font-size: 18px;
    padding: 15px 20px 8px;
  }

  .page-news__article-text {
    font-size: 14px;
    padding: 0 20px 15px;
  }

  .page-news__article-link {
    padding: 8px 20px 15px;
  }

  /* Security Section */
  .page-news__security-content {
    flex-direction: column;
    gap: 20px;
    padding: 0 15px;
  }

  .page-news__security-image {
    width: 100%;
    max-width: 100% !important;
    height: auto !important;
  }

  .page-news__security-text {
    width: 100%;
    padding: 20px;
  }

  .page-news__security-subtitle {
    font-size: 18px;
  }

  .page-news__security-text p {
    font-size: 14px;
  }

  /* FAQ Section */
  .page-news__faq-list {
    padding: 0 15px;
  }

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

  .page-news__faq-qtext {
    font-size: 16px;
  }

  .page-news__faq-toggle {
    font-size: 24px;
    width: 24px;
    height: 24px;
  }

  details.page-news__faq-item .page-news__faq-answer {
    padding: 0 20px 20px;
  }

  .page-news__faq-answer p {
    font-size: 14px;
  }

  /* General Image & Container rules for mobile */
  .page-news img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block;
  }

  .page-news__section,
  .page-news__card,
  .page-news__container,
  .page-news__promo-card,
  .page-news__guide-item,
  .page-news__article-card,
  .page-news__security-content,
  .page-news__security-text,
  .page-news__faq-list {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    /* padding-left and padding-right are handled by specific sections where needed */
  }

  /* Ensure no horizontal overflow */
  .page-news {
    overflow-x: hidden;
  }

  .page-news__content-grid,
  .page-news__promo-grid,
  .page-news__guide-steps,
  .page-news__article-grid {
    overflow-x: hidden;
    padding-left: 15px;
    padding-right: 15px;
  }
}