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

.page-contact {
  color: var(--text-main-color); /* Text Main for body on deep navy background */
  background-color: var(--deep-navy);
  padding-bottom: 50px;
}

.page-contact__hero-section {
  padding-top: 10px; /* Small top padding, body handles header offset */
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  min-height: 500px;
  padding-bottom: 40px;
}

.page-contact__hero-image-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
}

.page-contact__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.6);
  display: block;
}

.page-contact__hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

.page-contact__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--gold-color);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-contact__hero-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.6;
  margin-bottom: 30px;
  color: var(--text-secondary-color);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

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

.page-contact__btn-primary,
.page-contact__btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 15px 30px;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  box-sizing: border-box;
  max-width: 100%;
  white-space: normal;
  word-wrap: break-word;
}

.page-contact__btn-primary {
  background: var(--button-gradient);
  color: var(--text-main-color);
  border: 2px solid var(--glow-color);
  box-shadow: 0 0 15px rgba(79, 168, 255, 0.7);
}

.page-contact__btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 25px rgba(79, 168, 255, 1);
}

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

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

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

.page-contact__section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--gold-color);
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.page-contact__section-description {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.6;
  max-width: 800px;
  margin: 0 auto 40px;
  color: var(--text-secondary-color);
}

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

.page-contact__contact-methods {
  background-color: var(--primary-color);
  padding: 80px 0;
}

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

.page-contact__method-card {
  background: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  box-sizing: border-box;
}

.page-contact__method-icon {
  width: 100%;
  max-width: 250px;
  height: auto;
  object-fit: contain;
  margin-bottom: 20px;
  border-radius: 8px;
}

.page-contact__method-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--gold-color);
  margin-bottom: 15px;
}

.page-contact__method-description {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-secondary-color);
  margin-bottom: 25px;
  flex-grow: 1;
}

.page-contact__faq-section {
  background-color: var(--deep-navy);
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-contact__faq-list {
  max-width: 900px;
  margin: 40px auto 0;
  text-align: left;
}

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

details.page-contact__faq-item summary.page-contact__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(--text-main-color);
  font-size: 1.1rem;
  font-weight: 600;
}

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

details.page-contact__faq-item summary.page-contact__faq-question:hover {
  background: rgba(var(--primary-color), 0.5);
}

.page-contact__faq-qtext {
  flex: 1;
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--text-main-color);
}

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

details.page-contact__faq-item .page-contact__faq-answer {
  padding: 0 25px 25px;
  background: rgba(var(--deep-navy), 0.7);
  border-radius: 0 0 8px 8px;
  color: var(--text-secondary-color);
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-contact__commitment-section {
  background-color: var(--primary-color);
  padding-top: 80px;
  padding-bottom: 80px;
}

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

.page-contact__commitment-item {
  background: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  height: 100%;
  box-sizing: border-box;
}

.page-contact__commitment-icon {
  width: 100%;
  max-width: 200px;
  height: auto;
  object-fit: contain;
  margin-bottom: 20px;
  border-radius: 8px;
}

.page-contact__commitment-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold-color);
  margin-bottom: 15px;
}

.page-contact__commitment-text {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-secondary-color);
}

.page-contact__closing-statement {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  line-height: 1.6;
  max-width: 900px;
  margin: 60px auto 0;
  color: var(--gold-color);
  font-weight: 600;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

/* --- General Image & Container Responsive Styles --- */
.page-contact img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-contact__section,
.page-contact__container,
.page-contact__method-card,
.page-contact__commitment-item {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

/* --- Mobile Responsive Styles --- */
@media (max-width: 768px) {
  .page-contact {
    font-size: 16px;
    line-height: 1.6;
  }

  .page-contact__hero-section {
    padding-top: 10px; /* Ensure small top padding */
    min-height: 400px;
    padding-bottom: 30px;
  }

  .page-contact__hero-image {
    object-fit: contain !important; /* HERO mobile: contain, not cover */
    aspect-ratio: unset !important; /* Remove fixed aspect ratio */
    filter: brightness(0.4);
  }

  .page-contact__hero-content {
    padding: 15px;
  }

  .page-contact__main-title {
    font-size: clamp(2rem, 8vw, 2.5rem);
    margin-bottom: 15px;
  }

  .page-contact__hero-description {
    font-size: clamp(0.9rem, 3.5vw, 1rem);
    margin-bottom: 25px;
  }

  .page-contact__cta-buttons {
    flex-direction: column; /* Buttons stack vertically */
    gap: 15px;
    padding: 0 15px;
  }

  .page-contact__btn-primary,
  .page-contact__btn-secondary {
    max-width: 100% !important;
    width: 100% !important;
    padding: 12px 20px;
    font-size: 1rem;
  }

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

  .page-contact__section-title {
    font-size: clamp(1.8rem, 7vw, 2.2rem);
    margin-bottom: 15px;
  }

  .page-contact__section-description {
    font-size: clamp(0.9rem, 3.5vw, 1rem);
    margin-bottom: 30px;
    padding: 0 15px;
  }

  .page-contact__container {
    padding: 0 15px;
  }

  .page-contact__contact-methods {
    padding: 60px 0;
  }

  .page-contact__methods-grid {
    grid-template-columns: 1fr; /* Stack cards */
    gap: 20px;
  }

  .page-contact__method-card {
    padding: 25px;
  }

  .page-contact__method-title {
    font-size: 1.4rem;
  }

  .page-contact__method-description {
    font-size: 0.95rem;
  }

  .page-contact__faq-section {
    padding-top: 60px;
    padding-bottom: 60px;
  }

  .page-contact__faq-list {
    margin-top: 30px;
  }

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

  .page-contact__faq-qtext {
    font-size: clamp(0.95rem, 3.8vw, 1.05rem);
  }

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

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

  .page-contact__commitment-section {
    padding-top: 60px;
    padding-bottom: 60px;
  }

  .page-contact__commitment-grid {
    grid-template-columns: 1fr; /* Stack items */
    gap: 20px;
  }

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

  .page-contact__commitment-title {
    font-size: 1.3rem;
  }

  .page-contact__commitment-text {
    font-size: 0.95rem;
  }

  .page-contact__closing-statement {
    font-size: clamp(1rem, 4vw, 1.15rem);
    margin-top: 40px;
  }
  
  /* Generic image and container overrides for mobile */
  .page-contact img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  
  .page-contact__section,
  .page-contact__container,
  .page-contact__method-card,
  .page-contact__commitment-item {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    /* padding-left and padding-right are handled by .page-contact__container for main sections */
  }
}

/* --- Specific 768px overrides for '768px必写清单' --- */
/* 1. HERO主图区域 - already covered above with .page-contact__hero-image { object-fit: contain !important; aspect-ratio: unset !important; } and padding-top: 10px; */

/* 2. Sản phẩm hiển thị - Not applicable to contact page directly. */
/* If a contact page were to contain a product-like grid, it would be handled as such: */
/* @media (max-width: 768px) { */
/*   .page-contact__products-grid { */
/*     grid-template-columns: repeat(2, 1fr); */
/*     gap: 15px; */
/*     overflow-x: hidden; */
/*   } */
/* } */

/* 3. Tiêu đề chính trang trí + khu vực SEO dài - covered by .page-contact__section-title and .page-contact__section-description */
/*    and .page-contact__hero-description, .page-contact__main-title above. */

/* 4. Hình ảnh và vùng chứa chung - covered by .page-contact img and .page-contact__section, .page-contact__container etc. */

/* 5. Nút và vùng chứa nút - covered by .page-contact__cta-buttons and .page-contact__btn-primary, .page-contact__btn-secondary */