/* style/khuyen-mai.css */

:root {
  --primary-color: #FF8C1A;
  --secondary-color: #FFA53A;
  --button-gradient: linear-gradient(180deg, #FFA53A 0%, #D96800 100%);
  --card-bg: #17191F;
  --body-bg: #0D0E12;
  --text-main: #FFF3E6;
  --border-color: #A84F0C;
  --glow-color: #FFB04D;
  --deep-orange: #D96800;
}

.page-khuyen-mai {
  color: var(--text-main); /* Default text color for the page content */
  background-color: var(--body-bg);
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  padding-bottom: 40px;
}

.page-khuyen-mai__article-wrap {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-khuyen-mai__hero-section {
  padding-top: 10px; /* Small top padding as per instruction */
  padding-bottom: 60px;
  text-align: center;
  background-color: var(--body-bg);
}

.page-khuyen-mai__hero-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

.page-khuyen-mai__main-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  color: var(--secondary-color);
  margin-bottom: 20px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.page-khuyen-mai__intro-text {
  font-size: 1.15rem;
  color: rgba(255, 243, 230, 0.8);
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyen-mai__hero-cta {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.page-khuyen-mai__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  white-space: normal;
  word-wrap: break-word;
  box-sizing: border-box;
  max-width: 100%;
  min-width: 180px;
}

.page-khuyen-mai__btn--primary {
  background: var(--button-gradient);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 15px rgba(255, 140, 26, 0.4);
}

.page-khuyen-mai__btn--primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 140, 26, 0.6);
}

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

.page-khuyen-mai__btn--secondary:hover {
  background-color: rgba(255, 165, 58, 0.1);
  color: var(--glow-color);
  border-color: var(--glow-color);
  transform: translateY(-2px);
}

.page-khuyen-mai__section {
  padding: 60px 0;
  background-color: var(--body-bg);
}

.page-khuyen-mai__section-title {
  font-size: 2.2rem;
  color: var(--secondary-color);
  text-align: center;
  margin-bottom: 20px;
  font-weight: 700;
}

.page-khuyen-mai__section-description {
  font-size: 1.05rem;
  color: rgba(255, 243, 230, 0.7);
  text-align: center;
  max-width: 800px;
  margin: 0 auto 40px auto;
}

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

.page-khuyen-mai__promo-card {
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 25px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--border-color);
}

.page-khuyen-mai__promo-figure {
  margin: 0 0 20px 0;
}

.page-khuyen-mai__promo-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
  margin: 0 auto;
}

.page-khuyen-mai__card-title {
  font-size: 1.5rem;
  color: var(--secondary-color);
  margin-bottom: 15px;
  font-weight: 600;
  line-height: 1.3;
}

.page-khuyen-mai__card-text {
  font-size: 1rem;
  color: rgba(255, 243, 230, 0.8);
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-khuyen-mai__btn--small {
  padding: 10px 20px;
  font-size: 0.95rem;
  min-width: unset;
  width: fit-content;
  margin: 0 auto;
}

.page-khuyen-mai__info-card {
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  margin-bottom: 25px;
  border: 1px solid var(--border-color);
}

.page-khuyen-mai__info-card--dark {
  background-color: var(--deep-orange);
  border: 1px solid var(--glow-color);
  color: #ffffff;
}

.page-khuyen-mai__info-card--dark .page-khuyen-mai__card-title {
  color: #ffffff;
}

.page-khuyen-mai__info-card--dark .page-khuyen-mai__card-text {
  color: rgba(255, 255, 255, 0.9);
}

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

.page-khuyen-mai__step-item {
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 25px;
  text-align: center;
  border: 1px solid var(--border-color);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-khuyen-mai__step-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 15px;
  display: block;
}

.page-khuyen-mai__step-title {
  font-size: 1.4rem;
  color: var(--secondary-color);
  margin-bottom: 10px;
  font-weight: 600;
  line-height: 1.3;
}

.page-khuyen-mai__step-text {
  font-size: 0.95rem;
  color: rgba(255, 243, 230, 0.75);
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-khuyen-mai__btn--center {
  margin: 30px auto 0 auto;
}

.page-khuyen-mai__cta-bottom {
  background-color: var(--deep-orange);
  padding: 70px 0;
  text-align: center;
  border-top: 2px solid var(--glow-color);
}

.page-khuyen-mai__cta-title {
  font-size: 2.5rem;
  color: #ffffff;
  margin-bottom: 20px;
  font-weight: 700;
}

.page-khuyen-mai__cta-description {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.page-khuyen-mai__cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

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

@media (max-width: 1024px) {
  .page-khuyen-mai__article-wrap {
    padding: 0 15px;
  }

  .page-khuyen-mai__main-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
  }

  .page-khuyen-mai__section-title {
    font-size: 2rem;
  }

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

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

  .page-khuyen-mai__cta-title {
    font-size: 2.2rem;
  }

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

@media (max-width: 768px) {
  /* 1. 顶区标题 + 双 CTA */
  .page-khuyen-mai__hero-section {
    padding-top: 10px !important; /* Enforce small top padding */
    padding-bottom: 40px;
  }

  .page-khuyen-mai__main-title {
    font-size: clamp(1.8rem, 8vw, 2.5rem);
    margin-bottom: 15px;
  }

  .page-khuyen-mai__intro-text {
    font-size: 1rem;
    margin-bottom: 25px;
    padding: 0 10px;
  }

  .page-khuyen-mai__hero-cta {
    flex-direction: column; /* Stack buttons vertically */
    gap: 10px;
    padding: 0 15px;
  }

  .page-khuyen-mai__btn {
    width: 100% !important;
    max-width: 100% !important;
    min-width: unset;
    padding: 12px 20px;
    font-size: 1rem;
    white-space: normal !important;
    word-wrap: break-word !important;
    box-sizing: border-box !important;
  }

  /* 2. 单栏长文容器 */
  .page-khuyen-mai__article-wrap {
    padding: 0 15px !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

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

  .page-khuyen-mai__section-title {
    font-size: 1.8rem;
    margin-bottom: 15px;
    padding: 0 10px;
  }

  .page-khuyen-mai__section-description {
    font-size: 0.95rem;
    margin-bottom: 30px;
    padding: 0 10px;
  }

  .page-khuyen-mai__promo-grid,
  .page-khuyen-mai__steps-grid {
    grid-template-columns: 1fr; /* Single column layout */
    gap: 20px;
  }

  .page-khuyen-mai__promo-card,
  .page-khuyen-mai__info-card,
  .page-khuyen-mai__step-item {
    padding: 20px;
  }

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

  .page-khuyen-mai__card-text,
  .page-khuyen-mai__step-text {
    font-size: 0.9rem;
  }

  /* 3. 通用图片与 figure */
  .page-khuyen-mai img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    box-sizing: border-box !important;
  }

  .page-khuyen-mai__promo-figure {
    margin-bottom: 15px;
  }

  /* 4. 按钮与按钮容器 */
  .page-khuyen-mai__cta-buttons {
    flex-direction: column; /* Stack buttons vertically */
    gap: 10px;
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-khuyen-mai__btn--center {
    width: 100% !important;
    max-width: 100% !important;
    margin-left: 0;
    margin-right: 0;
    padding: 0 15px;
  }

  /* 5. CTA bottom section */
  .page-khuyen-mai__cta-bottom {
    padding: 50px 0;
  }

  .page-khuyen-mai__cta-title {
    font-size: 2rem;
    padding: 0 10px;
  }

  .page-khuyen-mai__cta-description {
    font-size: 1rem;
    margin-bottom: 30px;
    padding: 0 10px;
  }
}

@media (max-width: 480px) {
  .page-khuyen-mai__main-title {
    font-size: clamp(1.5rem, 9vw, 2.2rem);
  }

  .page-khuyen-mai__section-title {
    font-size: 1.6rem;
  }

  .page-khuyen-mai__cta-title {
    font-size: 1.8rem;
  }
}