/* style/nh.css */
/* body đã padding-top: var(--header-offset)；trang này không được viết lại biến đó */

/* Custom colors variables */
:root {
  --primary-color: #11A84E;
  --secondary-color: #22C768;
  --button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --card-bg: #11271B;
  --background: #08160F;
  --text-main: #F2FFF6;
  --text-secondary: #A7D9B8;
  --border: #2E7A4E;
  --glow: #57E38D;
  --gold: #F2C14E;
  --divider: #1E3A2A;
  --deep-green: #0A4B2C;
}

.page-nh {
  font-family: 'Arial', sans-serif;
  color: var(--text-main); /* #F2FFF6 */
  background-color: var(--background); /* #08160F */
  line-height: 1.6;
}

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

.page-nh__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 10px; /* Small top padding, body handles --header-offset */
  padding-bottom: 60px;
  background-color: var(--background);
}

.page-nh__hero-image-wrapper {
  width: 100%;
  max-height: 700px; /* Limit height for hero image */
  overflow: hidden;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-nh__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  min-width: 200px; /* Ensure image is not too small */
  min-height: 200px; /* Ensure image is not too small */
}

.page-nh__hero-content {
  text-align: center;
  padding: 40px 20px;
  max-width: 900px;
  margin-top: 20px;
  z-index: 1;
}

.page-nh__main-title {
  font-size: clamp(2.2rem, 4vw, 3.5rem); /* Responsive font size */
  font-weight: 700;
  color: var(--text-main); /* #F2FFF6 */
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-nh__description {
  font-size: 1.15rem;
  color: var(--text-secondary); /* #A7D9B8 */
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

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

.page-nh__btn-primary,
.page-nh__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  transition: all 0.3s ease;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
  text-align: center;
  min-width: 180px; /* Ensure minimum button width */
}

.page-nh__btn-primary {
  background: var(--button-gradient);
  color: var(--text-main); /* #F2FFF6 */
  border: 2px solid transparent;
}

.page-nh__btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(42, 209, 111, 0.4);
}

.page-nh__btn-secondary {
  background-color: transparent;
  color: var(--text-main); /* #F2FFF6 */
  border: 2px solid var(--border); /* #2E7A4E */
}

.page-nh__btn-secondary:hover {
  background-color: var(--border); /* #2E7A4E */
  color: var(--text-main);
  transform: translateY(-2px);
}

.page-nh__cta-buttons--center {
  margin-top: 30px;
}

.page-nh__section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: var(--text-main); /* #F2FFF6 */
  text-align: center;
  margin-bottom: 40px;
  line-height: 1.3;
}

.page-nh__text-block {
  font-size: 1.05rem;
  color: var(--text-secondary); /* #A7D9B8 */
  text-align: center;
  max-width: 900px;
  margin: 0 auto 30px auto;
}

/* Intro Section */
.page-nh__intro-section {
  padding: 80px 0;
}

.page-nh__dark-section {
  background-color: var(--card-bg); /* #11271B */
  color: var(--text-main); /* #F2FFF6 */
}

.page-nh__feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-nh__feature-item {
  background-color: var(--background); /* #08160F */
  padding: 30px;
  border-radius: 12px;
  text-align: center;
  border: 1px solid var(--border); /* #2E7A4E */
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-nh__feature-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.page-nh__feature-icon {
  width: 100px;
  height: 100px;
  object-fit: contain;
  margin: 0 auto 20px auto;
  min-width: 200px; /* Enforce min image size */
  min-height: 200px; /* Enforce min image size */
}

.page-nh__feature-title {
  font-size: 1.5rem;
  color: var(--text-main); /* #F2FFF6 */
  margin-bottom: 15px;
}

.page-nh__feature-description {
  font-size: 1rem;
  color: var(--text-secondary); /* #A7D9B8 */
}

/* Gameplay Section */
.page-nh__gameplay-section {
  padding: 80px 0;
  background-color: var(--background); /* #08160F */
}

.page-nh__gameplay-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-nh__step-item {
  background-color: var(--card-bg); /* #11271B */
  padding: 30px;
  border-radius: 12px;
  text-align: center;
  border: 1px solid var(--border); /* #2E7A4E */
}

.page-nh__step-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--glow); /* #57E38D */
  margin-bottom: 15px;
}

.page-nh__step-title {
  font-size: 1.4rem;
  color: var(--text-main); /* #F2FFF6 */
  margin-bottom: 10px;
}

.page-nh__step-description {
  font-size: 1rem;
  color: var(--text-secondary); /* #A7D9B8 */
}

/* Video Section */
.page-nh__video-section {
  padding: 80px 0;
}

.page-nh__video-link-wrapper {
  display: block;
  width: 100%;
  max-width: 900px;
  margin: 40px auto 0 auto;
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.page-nh__video {
  width: 100%;
  height: auto;
  display: block;
  min-width: 200px; /* Ensure video is not too small */
  min-height: 112px; /* 16:9 aspect ratio for 200px width */
  cursor: pointer;
}

/* Tips Section */
.page-nh__tips-section {
  padding: 80px 0;
  background-color: var(--background); /* #08160F */
}

.page-nh__tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-nh__tip-card {
  background-color: var(--card-bg); /* #11271B */
  padding: 30px;
  border-radius: 12px;
  border: 1px solid var(--border); /* #2E7A4E */
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-nh__tip-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.page-nh__tip-title {
  font-size: 1.4rem;
  color: var(--gold); /* #F2C14E */
  margin-bottom: 15px;
}

.page-nh__tip-description {
  font-size: 1rem;
  color: var(--text-secondary); /* #A7D9B8 */
}

/* FAQ Section */
.page-nh__faq-section {
  padding: 80px 0;
}

.page-nh__faq-list {
  margin-top: 50px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-nh__faq-item {
  background-color: var(--background); /* #08160F */
  border: 1px solid var(--border); /* #2E7A4E */
  border-radius: 8px;
  margin-bottom: 15px;
  overflow: hidden;
}

.page-nh__faq-item summary {
  list-style: none; /* Hide default marker */
  cursor: pointer;
  padding: 20px 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-main); /* #F2FFF6 */
  background-color: var(--card-bg); /* #11271B */
  transition: background-color 0.3s ease;
}

.page-nh__faq-item summary:hover {
  background-color: var(--deep-green); /* #0A4B2C */
}

.page-nh__faq-item summary::-webkit-details-marker {
  display: none; /* Hide default marker for webkit browsers */
}

.page-nh__faq-toggle {
  font-size: 1.8rem;
  line-height: 1;
  color: var(--glow); /* #57E38D */
  margin-left: 15px;
}

.page-nh__faq-answer {
  padding: 20px 25px;
  font-size: 1rem;
  color: var(--text-secondary); /* #A7D9B8 */
  border-top: 1px solid var(--divider); /* #1E3A2A */
}

/* Bottom CTA */
.page-nh__cta-bottom {
  padding: 60px 0;
  background-color: var(--card-bg); /* #11271B */
  text-align: center;
}

/* Global image/video responsiveness for content area */
.page-nh img,
.page-nh video {
  max-width: 100%;
  height: auto;
  display: block;
  box-sizing: border-box;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  .page-nh__hero-content {
    padding: 30px 15px;
  }
  .page-nh__main-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
  }
  .page-nh__description {
    font-size: 1rem;
  }
  .page-nh__section-title {
    font-size: clamp(1.6rem, 3.8vw, 2.5rem);
  }
  .page-nh__feature-item,
  .page-nh__step-item,
  .page-nh__tip-card {
    padding: 25px;
  }
}

@media (max-width: 768px) {
  .page-nh {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-nh__container {
    padding: 0 15px; /* Add padding to container for mobile */
  }

  .page-nh__hero-section {
    padding-bottom: 40px;
  }

  .page-nh__main-title {
    font-size: clamp(1.8rem, 6vw, 2.5rem);
    margin-bottom: 15px;
  }

  .page-nh__description {
    font-size: 0.95rem;
    margin-bottom: 25px;
  }

  .page-nh__cta-buttons {
    flex-direction: column;
    gap: 15px;
  }

  .page-nh__btn-primary,
  .page-nh__btn-secondary {
    width: 100% !important; /* Enforce full width */
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 1rem;
    white-space: normal !important;
    word-wrap: break-word !important;
    box-sizing: border-box !important;
    margin: 0 auto; /* Center buttons */
  }

  .page-nh__intro-section,
  .page-nh__gameplay-section,
  .page-nh__video-section,
  .page-nh__tips-section,
  .page-nh__faq-section,
  .page-nh__cta-bottom {
    padding: 40px 0;
  }

  .page-nh__section-title {
    font-size: clamp(1.5rem, 5vw, 2rem);
    margin-bottom: 30px;
  }

  .page-nh__text-block {
    font-size: 0.95rem;
    margin-bottom: 20px;
  }

  .page-nh__feature-icon {
    min-width: 200px !important; /* Override with !important to ensure minimum size */
    min-height: 200px !important;
  }

  .page-nh img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
  }
  
  .page-nh__section,
  .page-nh__card,
  .page-nh__container,
  .page-nh__video-section,
  .page-nh__video-container,
  .page-nh__video-wrapper,
  .page-nh__cta-buttons,
  .page-nh__button-group,
  .page-nh__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-nh__video-section {
    padding-top: 10px !important; /* body đã承担 --header-offset，此处禁止 var(--header-offset) */
  }

  .page-nh video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  .page-nh__faq-item summary {
    font-size: 1rem;
    padding: 15px 20px;
  }

  .page-nh__faq-answer {
    padding: 15px 20px;
    font-size: 0.9rem;
  }
}