.page-khuyen-mai {
  background-color: #0A0A0A;
  color: #FFF6D6;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

.page-khuyen-mai *,
.page-khuyen-mai *::before,
.page-khuyen-mai *::after {
  box-sizing: border-box;
}

.page-khuyen-mai img {
  max-width: 100%;
  height: auto;
}

/* Hero Section */
.page-khuyen-mai__hero-section {
  display: flex;
  flex-direction: column;
  padding-top: 10px;
  background: linear-gradient(180deg, #0A0A0A, #111111);
}

.page-khuyen-mai__hero-image-wrap {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0;
}

.page-khuyen-mai__hero-image {
  display: block;
  width: 100%;
  max-width: 1200px;
  height: auto;
  aspect-ratio: 16/7;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid #3A2A12;
  box-shadow: 0 8px 30px rgba(255, 211, 107, 0.1);
}

.page-khuyen-mai__hero-content {
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 24px 40px;
  text-align: center;
}

.page-khuyen-mai__main-title {
  color: #FFF6D6;
  font-size: clamp(1.5rem, 2vw + 1rem, 2.2rem);
  font-weight: 800;
  line-height: 1.2;
  margin-top: 0;
  margin-bottom: 16px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.6);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyen-mai__hero-description {
  font-size: clamp(1rem, 0.5vw + 1rem, 1.1rem);
  line-height: 1.8;
  margin-bottom: 28px;
  color: #FFF6D6;
  opacity: 0.85;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyen-mai__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.page-khuyen-mai__btn {
  display: inline-block;
  max-width: 100%;
  padding: 14px 34px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  line-height: 1.4;
  white-space: normal;
  word-break: break-word;
}

.page-khuyen-mai__btn--primary {
  background: linear-gradient(180deg, #FFD86A 0%, #DDA11D 100%);
  color: #111111;
  box-shadow: 0 4px 20px rgba(255, 211, 107, 0.3);
}

.page-khuyen-mai__btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(255, 211, 107, 0.5);
}

.page-khuyen-mai__btn--secondary {
  background: transparent;
  color: #FFF6D6;
  border: 2px solid #F2C14E;
  padding: 12px 32px;
}

.page-khuyen-mai__btn--secondary:hover {
  background: rgba(242, 193, 78, 0.1);
}

/* Section Header */
.page-khuyen-mai__section-header {
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 48px 24px 16px;
  text-align: center;
}

.page-khuyen-mai__section-title {
  color: #F2C14E;
  font-size: clamp(1.7rem, 2vw + 1rem, 2.4rem);
  font-weight: 700;
  margin: 0 0 16px;
}

.page-khuyen-mai__section-subtitle {
  font-size: 1.1rem;
  max-width: 800px;
  margin: 0 auto;
  color: #FFF6D6;
  opacity: 0.85;
  line-height: 1.8;
}

/* Promo Section */
.page-khuyen-mai__promo-section {
  padding-bottom: 20px;
}

.page-khuyen-mai__promo-grid {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.page-khuyen-mai__promo-grid + .page-khuyen-mai__promo-grid {
  margin-top: 24px;
}

.page-khuyen-mai__promo-card {
  background: #111111;
  border: 1px solid #3A2A12;
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  max-width: 100%;
}

.page-khuyen-mai__promo-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(255, 211, 107, 0.15);
}

.page-khuyen-mai__promo-card-img-wrap {
  width: 100%;
  overflow: hidden;
}

.page-khuyen-mai__promo-card-img {
  width: 100%;
  aspect-ratio: 2/1;
  object-fit: cover;
  display: block;
}

.page-khuyen-mai__promo-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.page-khuyen-mai__promo-badge {
  background: linear-gradient(180deg, #FFD86A 0%, #DDA11D 100%);
  color: #111111;
  display: inline-block;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 12px;
  align-self: flex-start;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.page-khuyen-mai__promo-card-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 0 12px;
  color: #F2C14E;
  line-height: 1.4;
}

.page-khuyen-mai__promo-card-desc {
  font-size: 0.95rem;
  line-height: 1.8;
  color: #FFF6D6;
  opacity: 0.85;
  flex: 1;
  margin-bottom: 20px;
}

.page-khuyen-mai__promo-card .page-khuyen-mai__btn {
  align-self: flex-start;
}

/* Guide Section */
.page-khuyen-mai__guide-section {
  background: #0A0A0A;
  padding: 20px 0 60px;
}

.page-khuyen-mai__guide-grid {
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.page-khuyen-mai__guide-item {
  margin: 0;
  background: #111111;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid #3A2A12;
  display: flex;
  flex-direction: column;
}

.page-khuyen-mai__guide-image {
  width: 100%;
  aspect-ratio: 2/1;
  object-fit: cover;
}

.page-khuyen-mai__guide-caption {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.page-khuyen-mai__guide-step {
  color: #FFD36B;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.page-khuyen-mai__guide-title {
  color: #FFF6D6;
  font-size: 1.2rem;
  font-weight: 700;
  margin: 8px 0 12px;
  line-height: 1.4;
}

.page-khuyen-mai__guide-text {
  font-size: 0.95rem;
  line-height: 1.8;
  color: #FFF6D6;
  opacity: 0.8;
  margin: 0;
}

/* Terms Section */
.page-khuyen-mai__terms-section {
  padding-bottom: 60px;
}

.page-khuyen-mai__terms-content {
  max-width: 1000px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  background: #111111;
  border: 1px solid #3A2A12;
  border-radius: 16px;
  padding: 32px;
}

.page-khuyen-mai__terms-list {
  margin: 0 0 28px;
  padding-left: 20px;
  display: grid;
  gap: 12px;
}

.page-khuyen-mai__terms-item {
  color: #FFF6D6;
  opacity: 0.85;
  line-height: 1.8;
}

.page-khuyen-mai__terms-item::marker {
  color: #F2C14E;
}

.page-khuyen-mai__terms-actions {
  text-align: center;
}

@media (max-width: 1024px) {
  .page-khuyen-mai__promo-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .page-khuyen-mai__guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .page-khuyen-mai__hero-image {
    aspect-ratio: 2/1;
    border-radius: 8px;
  }

  .page-khuyen-mai__hero-content {
    padding: 24px 16px 32px;
  }

  .page-khuyen-mai__promo-grid,
  .page-khuyen-mai__guide-grid {
    grid-template-columns: 1fr;
    padding: 0 16px;
  }

  .page-khuyen-mai__section-header {
    padding: 32px 16px 12px;
  }

  .page-khuyen-mai__terms-content {
    padding: 24px 16px;
    margin: 0 16px;
  }

  .page-khuyen-mai__promo-card {
    margin-bottom: 8px;
  }

  /* Universal image constraint for mobile */
  .page-khuyen-mai img {
    max-width: 100% !important;
    height: auto !important;
    width: 100% !important;
  }

  .page-khuyen-mai__btn {
    max-width: 100%;
    width: auto;
    white-space: normal;
    word-break: break-word;
    padding: 12px 24px;
  }

  .page-khuyen-mai__hero-actions {
    flex-direction: column;
    width: 100%;
    max-width: 100%;
    align-items: center;
  }

  .page-khuyen-mai__hero-actions .page-khuyen-mai__btn {
    width: 100%;
    max-width: 100%;
  }

  .page-khuyen-mai__promo-grid + .page-khuyen-mai__promo-grid {
    margin-top: 0;
  }

  .page-khuyen-mai__promo-card-img {
    aspect-ratio: 16/9;
  }
}

@media (max-width: 480px) {
  .page-khuyen-mai__main-title {
    font-size: 1.3rem;
  }

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

  .page-khuyen-mai__guide-grid {
    grid-template-columns: 1fr;
  }

  .page-khuyen-mai__promo-card {
    margin-bottom: 12px;
  }
}