/* style/index.css */

/* Biến CSS */
:root {
  --page-index-primary-color: #2C3E50;
  --page-index-secondary-color: #E74C3C;
  --page-index-text-light: #f5f5f5;
  --page-index-text-dark: #333333;
  --page-index-bg-light: #ffffff;
  --page-index-bg-dark: #1a252f;
  --page-index-accent-color: #FFD700; /* Màu vàng kim cho điểm nhấn */
}

.page-index {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--page-index-text-dark);
  background-color: var(--page-index-bg-light);
}

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

.page-index__section-title,
.page-index__hero-title,
.page-index__cta-title,
.page-index__final-cta-title {
  font-size: 2.5em;
  color: var(--page-index-primary-color);
  text-align: center;
  margin-bottom: 40px;
  font-weight: 700;
  position: relative;
  padding-bottom: 15px;
}

.page-index__section-title::after,
.page-index__hero-title::after,
.page-index__cta-title::after,
.page-index__final-cta-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--page-index-secondary-color);
  border-radius: 2px;
}

.page-index__text-content {
  font-size: 1.1em;
  text-align: justify;
  margin-bottom: 20px;
  color: var(--page-index-text-dark);
}

/* Nút chung */
.page-index__btn {
  display: inline-block;
  padding: 12px 25px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  text-align: center;
  cursor: pointer;
  font-size: 1.05em;
}

.page-index__btn--primary {
  background-color: var(--page-index-secondary-color);
  color: var(--page-index-text-light);
  border: 2px solid var(--page-index-secondary-color);
}

.page-index__btn--primary:hover {
  background-color: darken(var(--page-index-secondary-color), 10%);
  border-color: darken(var(--page-index-secondary-color), 10%);
  transform: translateY(-2px);
}

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

.page-index__btn--secondary:hover {
  background-color: var(--page-index-secondary-color);
  color: var(--page-index-text-light);
  transform: translateY(-2px);
}

.page-index__btn--small {
  padding: 8px 18px;
  font-size: 0.95em;
}

.page-index__btn--large {
  padding: 15px 35px;
  font-size: 1.2em;
}

/* Hero Section */
.page-index__hero {
  background: linear-gradient(135deg, var(--page-index-primary-color) 0%, var(--page-index-bg-dark) 100%);
  color: var(--page-index-text-light);
  padding: 80px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.page-index__hero-title {
  color: var(--page-index-accent-color);
  font-size: 3.5em;
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-index__hero-title::after {
  background-color: var(--page-index-accent-color);
}

.page-index__hero-description {
  font-size: 1.3em;
  text-align: center;
  max-width: 800px;
  margin-bottom: 40px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.9);
}

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

.page-index__hero-image-wrapper {
  margin-top: 50px;
  width: 100%;
  max-width: 900px;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.page-index__hero-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* About Section */
.page-index__about {
  padding: 60px 0;
  background-color: var(--page-index-bg-light);
}

/* Features Section */
.page-index__features {
  padding: 60px 0;
  background-color: var(--page-index-bg-dark);
  color: var(--page-index-text-light);
}

.page-index__features .page-index__section-title {
  color: var(--page-index-accent-color);
}

.page-index__features .page-index__section-title::after {
  background-color: var(--page-index-accent-color);
}

.page-index__feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.page-index__feature-item {
  background-color: var(--page-index-primary-color);
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__feature-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 25px rgba(0, 0, 0, 0.3);
}

.page-index__feature-icon {
  width: 60px;
  height: 60px;
  margin-bottom: 20px;
  display: inline-block;
}

.page-index__feature-title {
  font-size: 1.5em;
  color: var(--page-index-accent-color);
  margin-bottom: 15px;
}

.page-index__feature-description {
  font-size: 1em;
  color: rgba(255, 255, 255, 0.8);
}

/* Games Section */
.page-index__games {
  padding: 60px 0;
  background-color: var(--page-index-bg-light);
}

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

.page-index__game-item {
  background-color: var(--page-index-bg-light);
  border: 1px solid #e0e0e0;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-index__game-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.page-index__game-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.page-index__game-title {
  font-size: 1.4em;
  color: var(--page-index-primary-color);
  padding: 15px 20px 10px;
  font-weight: 600;
}

.page-index__game-description {
  font-size: 0.95em;
  color: var(--page-index-text-dark);
  padding: 0 20px 15px;
  flex-grow: 1;
}

.page-index__game-item .page-index__btn {
  margin: 0 20px 20px;
  width: calc(100% - 40px);
}

/* Promotions Section */
.page-index__promotions {
  padding: 60px 0;
  background-color: var(--page-index-primary-color);
  color: var(--page-index-text-light);
}

.page-index__promotions .page-index__section-title {
  color: var(--page-index-accent-color);
}

.page-index__promotions .page-index__section-title::after {
  background-color: var(--page-index-accent-color);
}

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

.page-index__promo-item {
  background-color: var(--page-index-bg-dark);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.25);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-index__promo-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.35);
}

.page-index__promo-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.page-index__promo-title {
  font-size: 1.4em;
  color: var(--page-index-accent-color);
  padding: 15px 20px 10px;
  font-weight: 600;
}

.page-index__promo-description {
  font-size: 0.95em;
  color: rgba(255, 255, 255, 0.8);
  padding: 0 20px 15px;
  flex-grow: 1;
}

.page-index__promo-item .page-index__btn {
  margin: 0 20px 20px;
  width: calc(100% - 40px);
  background-color: var(--page-index-secondary-color);
  border-color: var(--page-index-secondary-color);
  color: var(--page-index-text-light);
}

.page-index__promo-item .page-index__btn:hover {
  background-color: darken(var(--page-index-secondary-color), 10%);
  border-color: darken(var(--page-index-secondary-color), 10%);
}

/* CTA Section */
.page-index__cta {
  background: var(--page-index-secondary-color);
  color: var(--page-index-text-light);
  padding: 80px 0;
  text-align: center;
}

.page-index__cta-title {
  color: var(--page-index-text-light);
  font-size: 2.8em;
  margin-bottom: 20px;
}

.page-index__cta-title::after {
  background-color: var(--page-index-accent-color);
}

.page-index__cta-description {
  font-size: 1.2em;
  max-width: 700px;
  margin: 0 auto 40px;
  color: rgba(255, 255, 255, 0.9);
}

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

.page-index__cta-actions .page-index__btn--primary {
  background-color: var(--page-index-primary-color);
  border-color: var(--page-index-primary-color);
}

.page-index__cta-actions .page-index__btn--primary:hover {
  background-color: darken(var(--page-index-primary-color), 10%);
  border-color: darken(var(--page-index-primary-color), 10%);
}

.page-index__cta-actions .page-index__btn--secondary {
  color: var(--page-index-text-light);
  border-color: var(--page-index-text-light);
}

.page-index__cta-actions .page-index__btn--secondary:hover {
  background-color: var(--page-index-text-light);
  color: var(--page-index-secondary-color);
}

/* Download App Section */
.page-index__download-app {
  padding: 60px 0;
  background-color: var(--page-index-bg-light);
  text-align: center;
}

.page-index__app-download-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.page-index__btn--app {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1em;
  padding: 12px 30px;
}

.page-index__btn--ios {
  background-color: #000000;
  color: var(--page-index-text-light);
  border: 2px solid #000000;
}

.page-index__btn--ios:hover {
  background-color: #333333;
  border-color: #333333;
}

.page-index__btn--android {
  background-color: #3DDC84;
  color: var(--page-index-text-light);
  border: 2px solid #3DDC84;
}

.page-index__btn--android:hover {
  background-color: darken(#3DDC84, 10%);
  border-color: darken(#3DDC84, 10%);
}

.page-index__app-icon {
  width: 24px;
  height: 24px;
  vertical-align: middle;
}

.page-index__app-screenshot {
  max-width: 400px;
  width: 100%;
  height: auto;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  margin-top: 30px;
}

/* Detail Pages Section */
.page-index__detail-pages {
  padding: 60px 0;
  background-color: var(--page-index-bg-dark);
  color: var(--page-index-text-light);
}

.page-index__detail-pages .page-index__section-title {
  color: var(--page-index-accent-color);
}

.page-index__detail-pages .page-index__section-title::after {
  background-color: var(--page-index-accent-color);
}

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

.page-index__detail-item {
  background-color: var(--page-index-primary-color);
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.page-index__detail-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.page-index__detail-title {
  font-size: 1.4em;
  margin-bottom: 15px;
  font-weight: 600;
}

.page-index__detail-title a {
  color: var(--page-index-accent-color);
  text-decoration: none;
}

.page-index__detail-title a:hover {
  text-decoration: underline;
}

.page-index__detail-description {
  font-size: 0.95em;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-index__detail-item .page-index__btn {
  background-color: var(--page-index-secondary-color);
  border-color: var(--page-index-secondary-color);
  color: var(--page-index-text-light);
}

.page-index__detail-item .page-index__btn:hover {
  background-color: darken(var(--page-index-secondary-color), 10%);
  border-color: darken(var(--page-index-secondary-color), 10%);
}

/* Why Choose Us Section */
.page-index__why-choose-us {
  padding: 60px 0;
  background-color: var(--page-index-bg-light);
}

.page-index__reason-list {
  list-style: none;
  padding: 0;
  margin-top: 30px;
}

.page-index__reason-list li {
  background-color: #f9f9f9;
  border-left: 5px solid var(--page-index-secondary-color);
  padding: 15px 20px;
  margin-bottom: 15px;
  border-radius: 8px;
  font-size: 1.05em;
  line-height: 1.5;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.page-index__reason-list li strong {
  color: var(--page-index-primary-color);
}

/* FAQ Section */
.page-index__faq {
  padding: 60px 0;
  background-color: var(--page-index-primary-color);
  color: var(--page-index-text-light);
}

.page-index__faq .page-index__section-title {
  color: var(--page-index-accent-color);
}

.page-index__faq .page-index__section-title::after {
  background-color: var(--page-index-accent-color);
}

.page-index__faq-item {
  background-color: var(--page-index-bg-dark);
  padding: 25px 30px;
  margin-bottom: 20px;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.page-index__faq-question {
  font-size: 1.3em;
  color: var(--page-index-accent-color);
  margin-bottom: 10px;
  cursor: pointer;
  position: relative;
  padding-right: 30px;
}

.page-index__faq-question::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5em;
  line-height: 1;
  transition: transform 0.3s ease;
}

.page-index__faq-question.active::after {
  content: '-';
  transform: translateY(-50%) rotate(180deg);
}

.page-index__faq-answer {
  font-size: 1em;
  color: rgba(255, 255, 255, 0.8);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease-out;
}

.page-index__faq-answer.show {
  max-height: 200px; /* Adjust as needed */
}

.page-index__faq-answer a {
  color: var(--page-index-secondary-color);
  text-decoration: none;
}

.page-index__faq-answer a:hover {
  text-decoration: underline;
}

/* Final CTA Section */
.page-index__final-cta {
  background: linear-gradient(135deg, var(--page-index-secondary-color) 0%, #a2352a 100%);
  color: var(--page-index-text-light);
  padding: 100px 0;
  text-align: center;
}

.page-index__final-cta-title {
  color: var(--page-index-text-light);
  font-size: 3em;
  margin-bottom: 25px;
}

.page-index__final-cta-title::after {
  background-color: var(--page-index-accent-color);
}

.page-index__final-cta-description {
  font-size: 1.3em;
  max-width: 800px;
  margin: 0 auto 50px;
  color: rgba(255, 255, 255, 0.95);
}

/* Responsive Design */
@media (max-width: 992px) {
  .page-index__hero-title {
    font-size: 2.8em;
  }
  .page-index__hero-description {
    font-size: 1.1em;
  }
  .page-index__section-title {
    font-size: 2em;
  }
  .page-index__cta-title,
  .page-index__final-cta-title {
    font-size: 2.5em;
  }
  .page-index__feature-grid, .page-index__game-grid, .page-index__promo-grid, .page-index__detail-list {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  .page-index__hero {
    padding: 60px 0;
  }
  .page-index__hero-title {
    font-size: 2.2em;
  }
  .page-index__hero-description {
    font-size: 1em;
  }
  .page-index__hero-actions {
    flex-direction: column;
    gap: 15px;
  }
  .page-index__btn {
    width: 80%;
    margin: 0 auto;
  }
  .page-index__app-download-links {
    flex-direction: column;
    gap: 15px;
  }
  .page-index__btn--app {
    width: 80%;
    margin: 0 auto;
  }
  .page-index__section-title {
    font-size: 1.8em;
  }
  .page-index__cta-title,
  .page-index__final-cta-title {
    font-size: 2em;
  }
}

@media (max-width: 480px) {
  .page-index__hero-title {
    font-size: 1.8em;
  }
  .page-index__hero-description {
    font-size: 0.9em;
  }
  .page-index__section-title {
    font-size: 1.5em;
  }
  .page-index__cta-title,
  .page-index__final-cta-title {
    font-size: 1.7em;
  }
  .page-index__btn {
    width: 90%;
    font-size: 0.9em;
  }
  .page-index__feature-item, .page-index__game-item, .page-index__promo-item, .page-index__detail-item {
    padding: 20px;
  }
  .page-index__feature-title, .page-index__game-title, .page-index__promo-title, .page-index__detail-title {
    font-size: 1.2em;
  }
  .page-index__faq-question {
    font-size: 1.1em;
  }
}