:root {
  --primary-color: #FFD700; /* Vàng sang trọng */
  --secondary-color: #8B0000; /* Đỏ rượu vang sâu lắng */
  --dark-bg-color: #1a1a1a; /* Nền tối */
  --light-text-color: #ffffff; /* Chữ sáng */
  --dark-text-color: #333333; /* Chữ tối */
  --medium-gray: #f0f0f0;
  --border-color: #333;
  --button-hover-bg: #ccac00;
  --card-bg: #2a2a2a;
}

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

.page-index a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

.page-index a:hover {
  color: var(--button-hover-bg);
}

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

.page-index .section-title {
  font-size: 3em;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 40px;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.page-index p {
  font-size: 1.1em;
  text-align: center;
  margin-bottom: 30px;
  color: #cccccc;
}

.page-index .btn-primary, .page-index .btn-secondary {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 5px;
  font-weight: bold;
  text-transform: uppercase;
  transition: all 0.3s ease;
  text-align: center;
  border: none;
  cursor: pointer;
}

.page-index .btn-primary {
  background: var(--primary-color);
  color: var(--dark-text-color);
  font-size: 1.1em;
  margin-top: 20px;
}

.page-index .btn-primary:hover {
  background: var(--button-hover-bg);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.page-index .btn-secondary {
  background: var(--secondary-color);
  color: var(--light-text-color);
  font-size: 0.95em;
  padding: 10px 20px;
  border: 1px solid var(--secondary-color);
}

.page-index .btn-secondary:hover {
  background: darken(var(--secondary-color), 10%);
  border-color: darken(var(--secondary-color), 10%);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* HERO Section */
.page-index .hero-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
  background-color: var(--dark-bg-color);
}

.page-index .hero-container {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.page-index .hero-image {
  width: 100%;
  margin-bottom: 30px;
}

.page-index .hero-image img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.page-index .hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  width: 100%;
}

.page-index .hero-content h1 {
  font-size: 3.8em;
  color: var(--primary-color);
  margin-bottom: 20px;
  font-weight: 900;
  line-height: 1.2;
  text-shadow: 0 3px 6px rgba(0, 0, 0, 0.6);
}

.page-index .hero-content p {
  font-size: 1.4em;
  color: #e0e0e0;
  max-width: 800px;
  margin: 0 auto 40px auto;
  line-height: 1.5;
}

.page-index .cta-button {
  display: inline-block;
  padding: 18px 45px;
  background: var(--secondary-color);
  color: var(--light-text-color);
  text-decoration: none;
  border-radius: 8px;
  font-size: 1.5em;
  font-weight: bold;
  margin-top: 20px;
  transition: all 0.3s ease;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
  border: 2px solid var(--primary-color);
}

.page-index .cta-button:hover {
  background: var(--primary-color);
  color: var(--dark-text-color);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
  border-color: var(--secondary-color);
}

/* Intro Section */
.page-index .intro-section {
  padding: 80px 0;
  background-color: var(--card-bg);
  text-align: center;
}

.page-index .intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-index .intro-item {
  background: #333;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  text-align: center;
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index .intro-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-index .intro-item .intro-icon {
  width: 100px;
  height: 100px;
  margin-bottom: 20px;
  object-fit: contain;
}

.page-index .intro-item h3 {
  font-size: 1.5em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-index .intro-item p {
  font-size: 1em;
  color: #bbb;
  text-align: center;
  margin-bottom: 0;
}

/* Quick Access Section */
.page-index .quick-access-section {
  padding: 80px 0;
  background-color: var(--dark-bg-color);
  text-align: center;
}

.page-index .access-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 25px;
  margin-top: 50px;
}

.page-index .access-item {
  background: var(--card-bg);
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease, background-color 0.3s ease;
}

.page-index .access-item:hover {
  transform: translateY(-5px);
  background-color: #383838;
}

.page-index .access-item .access-icon {
  width: 80px;
  height: 80px;
  margin-bottom: 15px;
  object-fit: contain;
}

.page-index .access-item h3 {
  font-size: 1.3em;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.page-index .access-item p {
  font-size: 0.95em;
  color: #bbb;
  text-align: center;
  margin-bottom: 0;
}

/* Games Section */
.page-index .games-section {
  padding: 80px 0;
  background-color: var(--card-bg);
}

.page-index .game-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-index .game-card {
  background: #333;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index .game-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.page-index .game-card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

.page-index .game-card-content {
  padding: 25px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-index .game-card-content h3 {
  font-size: 1.6em;
  color: var(--primary-color);
  margin-bottom: 15px;
  text-align: left;
  width: 100%;
}

.page-index .game-card-content p {
  font-size: 1em;
  color: #bbb;
  text-align: left;
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-index .game-card-content .card-link {
  color: var(--primary-color);
}

.page-index .game-card-content .card-link:hover {
  color: var(--button-hover-bg);
}

/* Promotion Section */
.page-index .promotion-section {
  padding: 80px 0;
  background-color: var(--dark-bg-color);
}

.page-index .promotion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-index .promo-item {
  background: #333;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  text-align: center;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index .promo-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-index .promo-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.page-index .promo-item h3 {
  font-size: 1.4em;
  color: var(--primary-color);
  margin: 20px 15px 10px 15px;
}

.page-index .promo-item p {
  font-size: 0.95em;
  color: #bbb;
  padding: 0 15px 20px 15px;
  text-align: center;
  margin-bottom: 0;
  flex-grow: 1;
}

.page-index .promo-item .btn-secondary {
  margin: 0 20px 20px 20px;
  align-self: center;
}

/* Security & Support Section */
.page-index .security-support-section {
  padding: 80px 0;
  background-color: var(--card-bg);
}

.page-index .security-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-index .security-item {
  background: #333;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  text-align: center;
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index .security-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-index .security-item .security-icon {
  width: 90px;
  height: 90px;
  margin-bottom: 20px;
  object-fit: contain;
}

.page-index .security-item h3 {
  font-size: 1.5em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-index .security-item p {
  font-size: 1em;
  color: #bbb;
  text-align: center;
  margin-bottom: 0;
}

/* FAQ Section */
.page-index .faq-section {
  padding: 80px 0;
  background-color: var(--dark-bg-color);
}

.page-index .faq-list {
  margin-top: 50px;
}

.page-index .faq-item {
  margin-bottom: 15px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.page-index .faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  background: #333;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.page-index .faq-question:hover {
  background: #444;
  border-color: var(--primary-color);
}

.page-index .faq-question h3 {
  font-size: 1.3em;
  color: var(--light-text-color);
  margin: 0;
  text-align: left;
}

.page-index .faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  transition: transform 0.3s ease;
  line-height: 1;
}

.page-index .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out, padding 0.4s ease-out;
  padding: 0 25px;
  background: #2a2a2a;
  color: #cccccc;
  border-left: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  border-radius: 0 0 8px 8px;
}

.page-index .faq-answer p {
  padding: 15px 0;
  margin: 0;
  text-align: left;
  font-size: 1em;
}

.page-index .faq-item.active .faq-answer {
  max-height: 500px; /* Đủ lớn để chứa nội dung */
  padding: 15px 25px;
  border-bottom: 1px solid var(--primary-color);
}

.page-index .faq-item.active .faq-question {
  background: #444;
  border-color: var(--primary-color);
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

.page-index .faq-item.active .faq-toggle {
  transform: rotate(45deg);
  color: var(--secondary-color);
}

/* Blog Section */
.page-index .blog-section {
  padding: 80px 0;
  background-color: var(--card-bg);
}

.page-index .blog-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-index .blog-card {
  background: #333;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index .blog-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

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

.page-index .blog-card-content {
  padding: 25px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-index .blog-card-content h3 {
  font-size: 1.5em;
  color: var(--primary-color);
  margin-bottom: 10px;
  text-align: left;
  width: 100%;
}

.page-index .blog-card-content p {
  font-size: 1em;
  color: #bbb;
  text-align: left;
  margin-bottom: 15px;
  flex-grow: 1;
}

.page-index .blog-card-content .blog-date {
  font-size: 0.85em;
  color: #888;
  margin-bottom: 15px;
  display: block;
}

.page-index .blog-card-content .card-link {
  color: var(--primary-color);
}

.page-index .blog-card-content .card-link:hover {
  color: var(--button-hover-bg);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-index .hero-content h1 {
    font-size: 3em;
  }
  .page-index .hero-content p {
    font-size: 1.2em;
  }
  .page-index .cta-button {
    font-size: 1.3em;
    padding: 15px 40px;
  }
  .page-index .section-title {
    font-size: 2.5em;
  }
}

@media (max-width: 768px) {
  .page-index .hero-section {
    padding: 40px 15px;
  }
  .page-index .hero-image img {
    border-radius: 4px;
  }
  .page-index .hero-content h1 {
    font-size: 2.5em;
  }
  .page-index .hero-content p {
    font-size: 1.1em;
  }
  .page-index .cta-button {
    padding: 12px 30px;
    font-size: 1.1em;
  }
  .page-index .section-title {
    font-size: 2em;
    margin-bottom: 30px;
  }
  .page-index p {
    font-size: 1em;
    margin-bottom: 20px;
  }
  .page-index .intro-grid, .page-index .access-grid, .page-index .game-cards-grid, .page-index .promotion-grid, .page-index .security-grid, .page-index .blog-cards-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .page-index .intro-item, .page-index .access-item, .page-index .game-card, .page-index .promo-item, .page-index .security-item, .page-index .blog-card {
    padding: 20px;
  }
  .page-index .faq-question {
    padding: 15px 20px;
  }
  .page-index .faq-question h3 {
    font-size: 1.1em;
  }
  .page-index .faq-toggle {
    font-size: 20px;
  }
  .page-index .faq-answer {
    padding: 0 20px;
  }
  .page-index .faq-item.active .faq-answer {
    padding: 15px 20px;
  }
  .page-index .game-card-img, .page-index .promo-img, .page-index .blog-card-img {
    height: 160px;
  }
}

@media (max-width: 480px) {
  .page-index .hero-content h1 {
    font-size: 2em;
  }
  .page-index .hero-content p {
    font-size: 0.95em;
  }
  .page-index .cta-button {
    padding: 10px 25px;
    font-size: 1em;
  }
  .page-index .section-title {
    font-size: 1.8em;
  }
  .page-index .intro-item h3, .page-index .security-item h3 {
    font-size: 1.3em;
  }
  .page-index .access-item h3 {
    font-size: 1.1em;
  }
  .page-index .game-card-content h3, .page-index .promo-item h3, .page-index .blog-card-content h3 {
    font-size: 1.3em;
  }
}