/* style/khuyen-mai.css */

:root {
  --page-khuyen-mai-primary-color: #2F6BFF;
  --page-khuyen-mai-secondary-color: #6FA3FF;
  --page-khuyen-mai-text-main: #1F2D3D;
  --page-khuyen-mai-text-dark: #000000;
  --page-khuyen-mai-card-bg: #FFFFFF;
  --page-khuyen-mai-bg-light: #F4F7FB;
  --page-khuyen-mai-border-color: #D6E2FF;
  --page-khuyen-mai-glow-color: #A5C4FF;
  --page-khuyen-mai-button-gradient: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
}

.page-khuyen-mai {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--page-khuyen-mai-text-main);
  background-color: var(--page-khuyen-mai-bg-light);
}

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

.page-khuyen-mai__hero-section {
  position: relative;
  padding-top: 10px; /* Small top padding, assuming body handles --header-offset */
  margin-bottom: 40px;
  overflow: hidden;
  color: #ffffff;
  background-color: var(--page-khuyen-mai-primary-color);
}

.page-khuyen-mai__hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.2;
}

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

.page-khuyen-mai__hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
  padding: 80px 20px;
  text-align: center;
}

.page-khuyen-mai__main-title {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #ffffff;
}

.page-khuyen-mai__hero-description {
  font-size: 1.25rem;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

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

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

.page-khuyen-mai__btn-primary {
  background: var(--page-khuyen-mai-button-gradient);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 15px rgba(47, 107, 255, 0.4);
}

.page-khuyen-mai__btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(47, 107, 255, 0.6);
}

.page-khuyen-mai__btn-secondary {
  background: var(--page-khuyen-mai-card-bg);
  color: var(--page-khuyen-mai-primary-color);
  border: 2px solid var(--page-khuyen-mai-primary-color);
}

.page-khuyen-mai__btn-secondary:hover {
  background: var(--page-khuyen-mai-primary-color);
  color: #ffffff;
  transform: translateY(-2px);
}

.page-khuyen-mai__section {
  padding: 40px 0;
  margin-bottom: 40px;
  background-color: var(--page-khuyen-mai-bg-light);
}

.page-khuyen-mai__section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--page-khuyen-mai-text-dark);
  text-align: center;
  margin-bottom: 25px;
  line-height: 1.3;
}

.page-khuyen-mai__section-description {
  font-size: 1.1rem;
  text-align: center;
  max-width: 900px;
  margin: 0 auto 40px auto;
  color: var(--page-khuyen-mai-text-main);
}

.page-khuyen-mai__promo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

.page-khuyen-mai__promo-card {
  background-color: var(--page-khuyen-mai-card-bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.page-khuyen-mai__promo-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.page-khuyen-mai__promo-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.page-khuyen-mai__card-content {
  padding: 25px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.page-khuyen-mai__card-title {
  font-size: 1.4rem;
  font-weight: 600;
  margin-top: 0;
  margin-bottom: 15px;
  color: var(--page-khuyen-mai-text-dark);
  line-height: 1.4;
}

.page-khuyen-mai__card-title a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

.page-khuyen-mai__card-title a:hover {
  color: var(--page-khuyen-mai-primary-color);
}

.page-khuyen-mai__card-text {
  font-size: 1rem;
  color: var(--page-khuyen-mai-text-main);
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-khuyen-mai__card-button {
  display: inline-block;
  padding: 10px 20px;
  background: var(--page-khuyen-mai-button-gradient);
  color: #ffffff;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  text-align: center;
  transition: background-color 0.3s ease;
  max-width: 100%;
  box-sizing: border-box;
  white-space: normal;
  word-wrap: break-word;
}

.page-khuyen-mai__card-button:hover {
  background: var(--page-khuyen-mai-primary-color);
  box-shadow: 0 2px 10px rgba(47, 107, 255, 0.4);
}

.page-khuyen-mai__content-block {
  background-color: var(--page-khuyen-mai-card-bg);
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  margin-bottom: 40px;
}

.page-khuyen-mai__text-block {
  font-size: 1.05rem;
  margin-bottom: 25px;
  color: var(--page-khuyen-mai-text-main);
}

.page-khuyen-mai__numbered-list,
.page-khuyen-mai__bullet-list {
  list-style: none;
  padding: 0;
  margin-bottom: 30px;
}

.page-khuyen-mai__numbered-list li,
.page-khuyen-mai__bullet-list li {
  margin-bottom: 20px;
  display: flex;
  align-items: flex-start;
  font-size: 1.05rem;
  color: var(--page-khuyen-mai-text-main);
}

.page-khuyen-mai__numbered-list li {
  counter-increment: list-counter;
}

.page-khuyen-mai__numbered-list li::before {
  content: counter(list-counter) ". ";
  font-weight: bold;
  color: var(--page-khuyen-mai-primary-color);
  margin-right: 10px;
  font-size: 1.2em;
  flex-shrink: 0;
}

.page-khuyen-mai__bullet-list li::before {
  content: "\2022"; /* Unicode bullet */
  font-weight: bold;
  color: var(--page-khuyen-mai-primary-color);
  margin-right: 10px;
  font-size: 1.2em;
  flex-shrink: 0;
}

.page-khuyen-mai__list-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--page-khuyen-mai-text-dark);
  margin-top: 0;
  margin-bottom: 5px;
  line-height: 1.4;
}

.page-khuyen-mai__numbered-list li p,
.page-khuyen-mai__bullet-list li p {
  margin: 0;
  font-size: 1rem;
}

.page-khuyen-mai__numbered-list li div,
.page-khuyen-mai__bullet-list li div {
  flex-grow: 1;
}

.page-khuyen-mai__btn-block {
  width: 100%;
  display: block;
  text-align: center;
  margin-top: 30px;
}

.page-khuyen-mai__faq-section {
  background-color: var(--page-khuyen-mai-primary-color);
  padding: 60px 0;
  color: #ffffff;
}

.page-khuyen-mai__faq-section .page-khuyen-mai__section-title {
  color: #ffffff;
  margin-bottom: 40px;
}

.page-khuyen-mai__faq-list {
  max-width: 900px;
  margin: 0 auto;
}

details.page-khuyen-mai__faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

details.page-khuyen-mai__faq-item summary.page-khuyen-mai__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: #ffffff;
  font-weight: 600;
}

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

details.page-khuyen-mai__faq-item summary.page-khuyen-mai__faq-question:hover {
  background: rgba(255, 255, 255, 0.1);
}

.page-khuyen-mai__faq-qtext {
  flex: 1;
  font-size: 1.1rem;
  line-height: 1.5;
  text-align: left;
}

.page-khuyen-mai__faq-toggle {
  font-size: 1.8rem;
  font-weight: bold;
  color: #ffffff;
  flex-shrink: 0;
  margin-left: 15px;
  width: 30px;
  text-align: center;
}

details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
  padding: 0 25px 20px;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 0 0 8px 8px;
  color: #f0f0f0;
  font-size: 1rem;
}

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

@media (max-width: 1024px) {
  .page-khuyen-mai__hero-content {
    padding: 60px 20px;
  }

  .page-khuyen-mai__main-title {
    font-size: clamp(2.2rem, 3.5vw, 3rem);
  }

  .page-khuyen-mai__hero-description {
    font-size: 1.1rem;
  }

  .page-khuyen-mai__promo-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
  }

  .page-khuyen-mai__content-block {
    padding: 30px;
  }

  .page-khuyen-mai__faq-qtext {
    font-size: 1rem;
  }
}

@media (max-width: 768px) {
  .page-khuyen-mai__hero-section {
    padding-top: 10px; /* Consistent small top padding */
    margin-bottom: 30px;
  }

  .page-khuyen-mai__hero-image img {
    object-fit: contain !important; /* HERO mobile: object-fit:contain */
    aspect-ratio: unset !important; /* HERO mobile: aspect-ratio:unset */
    height: auto !important;
    position: relative;
    opacity: 0.1; /* Less opaque on mobile */
  }

  .page-khuyen-mai__hero-content {
    padding: 50px 15px;
  }

  .page-khuyen-mai__main-title {
    font-size: clamp(1.8rem, 7vw, 2.5rem);
    margin-bottom: 15px;
  }

  .page-khuyen-mai__hero-description {
    font-size: 1rem;
    margin-bottom: 25px;
  }

  .page-khuyen-mai__cta-buttons {
    flex-direction: column; /* Buttons stack vertically */
    gap: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 0 15px;
  }

  .page-khuyen-mai__btn-primary,
  .page-khuyen-mai__btn-secondary {
    width: 100% !important;
    max-width: 100% !important;
    padding: 12px 20px;
    font-size: 1rem;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-khuyen-mai__section {
    padding: 30px 0;
    margin-bottom: 30px;
  }

  .page-khuyen-mai__section-title {
    font-size: 1.8rem;
    margin-bottom: 20px;
  }

  .page-khuyen-mai__section-description {
    font-size: 0.95rem;
    margin-bottom: 30px;
    padding: 0 15px;
  }

  .page-khuyen-mai__promo-grid {
    grid-template-columns: 1fr; /* Product grid mobile: 1 column */
    gap: 20px;
    margin-bottom: 40px;
    padding: 0 15px;
    overflow-x: hidden; /* Prevent horizontal scroll */
  }

  .page-khuyen-mai__promo-card img {
    
  }

  .page-khuyen-mai__card-content {
    padding: 20px;
  }

  .page-khuyen-mai__card-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
  }

  .page-khuyen-mai__card-text {
    font-size: 0.9rem;
    margin-bottom: 15px;
  }

  .page-khuyen-mai__card-button {
    font-size: 0.9rem;
    padding: 8px 15px;
  }

  .page-khuyen-mai__content-block {
    padding: 25px;
    margin-bottom: 30px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  .page-khuyen-mai__text-block {
    font-size: 1rem;
    margin-bottom: 20px;
  }

  .page-khuyen-mai__numbered-list li,
  .page-khuyen-mai__bullet-list li {
    font-size: 1rem;
    margin-bottom: 15px;
  }

  .page-khuyen-mai__list-title {
    font-size: 1.05rem;
  }

  .page-khuyen-mai__numbered-list li p,
  .page-khuyen-mai__bullet-list li p {
    font-size: 0.95rem;
  }

  .page-khuyen-mai__faq-section {
    padding: 40px 0;
  }

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

  .page-khuyen-mai__faq-qtext {
    font-size: 1rem;
  }

  .page-khuyen-mai__faq-toggle {
    font-size: 1.5rem;
    width: 25px;
  }

  details.page-khuyen-mai__faq-item .page-khuyen-mai__faq-answer {
    padding: 0 20px 15px;
    font-size: 0.95rem;
  }

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

  .page-khuyen-mai__container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
}