.page-app-download {
  font-family: 'Arial', sans-serif;
  color: #E0E0E0; /* Light gray for general text on dark background */
  background-color: #000000; /* Dark background for contrast */
}

.page-app-download__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.page-app-download__section-title {
  font-size: 2.5em;
  color: #FFD700; /* Secondary color for titles */
  text-align: center;
  margin-bottom: 20px;
  font-weight: bold;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
  line-height: 1.2;
}

.page-app-download__section-description {
  font-size: 1.1em;
  color: #B0BEC5; /* Lighter gray for descriptions */
  text-align: center;
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.page-app-download__btn {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1em;
  transition: all 0.3s ease;
  text-align: center;
  cursor: pointer;
  border: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.page-app-download__btn--primary {
  background-color: #FFD700; /* Gold */
  color: #1A237E; /* Deep Blue */
  border: 2px solid #FFD700;
}

.page-app-download__btn--primary:hover {
  background-color: #e5c100;
  color: #10154e;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.page-app-download__btn--secondary {
  background-color: transparent;
  color: #FFD700; /* Gold */
  border: 2px solid #FFD700;
}

.page-app-download__btn--secondary:hover {
  background-color: #FFD700;
  color: #1A237E;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.page-app-download__btn--small {
  padding: 10px 20px;
  font-size: 0.9em;
  border-radius: 5px;
}

.page-app-download__btn--mt {
  margin-top: 20px;
}

/* Hero Section */
.page-app-download__hero-section {
  background: linear-gradient(135deg, #1A237E 0%, #0D103D 100%); /* Deep blue gradient */
  padding: 80px 0;
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
}

.page-app-download__hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.page-app-download__hero-title {
  font-size: 3.5em;
  color: #FFD700; /* Gold for main title */
  margin-bottom: 20px;
  line-height: 1.1;
  font-weight: 900;
  text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.7);
}

.page-app-download__hero-description {
  font-size: 1.3em;
  margin-bottom: 40px;
  line-height: 1.6;
  color: #CFD8DC; /* Lighter white for description */
}

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

.page-app-download__hero-image-wrapper {
  position: absolute;
  bottom: -50px;
  right: -100px;
  opacity: 0.15;
  z-index: 1;
  transform: rotate(15deg);
}

.page-app-download__hero-image {
  max-width: 600px;
  height: auto;
}

/* Why Download Section */
.page-app-download__why-download-section {
  padding: 80px 0;
  background-color: #121212; /* Slightly lighter dark background */
}

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

.page-app-download__feature-item {
  background-color: #1A237E; /* Primary color as card background */
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-app-download__feature-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
}

.page-app-download__feature-icon {
  width: 60px;
  height: 60px;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 5px #FFD700);
}

.page-app-download__feature-title {
  font-size: 1.6em;
  color: #FFD700; /* Gold for feature titles */
  margin-bottom: 15px;
  font-weight: bold;
}

.page-app-download__feature-text {
  font-size: 1em;
  color: #CFD8DC;
  line-height: 1.6;
}

/* Download Guide Section */
.page-app-download__download-guide-section {
  padding: 80px 0;
  background-color: #000000;
}

.page-app-download__guide-tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
  border-bottom: 2px solid #37474F;
}

.page-app-download__tab-btn {
  background-color: transparent;
  border: none;
  padding: 15px 30px;
  font-size: 1.2em;
  font-weight: bold;
  color: #B0BEC5;
  cursor: pointer;
  transition: all 0.3s ease;
  border-bottom: 3px solid transparent;
}

.page-app-download__tab-btn:hover {
  color: #FFD700;
}

.page-app-download__tab-btn--active {
  color: #FFD700;
  border-bottom-color: #FFD700;
}

.page-app-download__tab-content {
  display: none;
  padding-top: 30px;
}

.page-app-download__tab-content--active {
  display: block;
}

.page-app-download__platform-title {
  font-size: 2em;
  color: #FFD700;
  text-align: center;
  margin-bottom: 30px;
  font-weight: bold;
}

.page-app-download__guide-flex {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 50px;
  align-items: flex-start;
}

.page-app-download__guide-steps {
  flex: 1;
  min-width: 300px;
  max-width: 600px;
}

.page-app-download__guide-steps ol {
  list-style: none;
  padding: 0;
  counter-reset: step-counter;
}

.page-app-download__guide-steps li {
  margin-bottom: 20px;
  font-size: 1.1em;
  color: #CFD8DC;
  line-height: 1.6;
  position: relative;
  padding-left: 45px;
}

.page-app-download__guide-steps li::before {
  counter-increment: step-counter;
  content: "Bước " counter(step-counter) ":";
  position: absolute;
  left: 0;
  top: 0;
  font-weight: bold;
  color: #FFD700;
  font-size: 1.2em;
}

.page-app-download__qr-code-wrapper {
  text-align: center;
  flex-shrink: 0;
  min-width: 250px;
  max-width: 300px;
  background-color: #1A237E;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
}

.page-app-download__qr-code {
  width: 180px;
  height: 180px;
  border: 5px solid #FFD700;
  border-radius: 5px;
  margin-bottom: 15px;
}

.page-app-download__qr-label {
  font-size: 1em;
  color: #CFD8DC;
  margin-bottom: 20px;
}

.page-app-download__phone-mockup {
  max-width: 100%;
  height: auto;
  border-radius: 15px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
}

/* Game Features Section */
.page-app-download__game-features-section {
  padding: 80px 0;
  background-color: #121212;
}

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

.page-app-download__game-item {
  background-color: #1A237E;
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-app-download__game-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
}

.page-app-download__game-icon {
  width: 70px;
  height: 70px;
  margin-bottom: 20px;
  filter: drop-shadow(0 0 5px #FFD700);
}

.page-app-download__game-title {
  font-size: 1.8em;
  color: #FFD700;
  margin-bottom: 15px;
  font-weight: bold;
}

.page-app-download__game-text {
  font-size: 1em;
  color: #CFD8DC;
  line-height: 1.6;
}

/* Exclusive Benefits Section */
.page-app-download__exclusive-benefits-section {
  padding: 80px 0;
  background-color: #000000;
}

.page-app-download__benefits-list {
  list-style: none;
  padding: 0;
  max-width: 900px;
  margin: 0 auto 40px auto;
}

.page-app-download__benefits-list li {
  background-color: #1A237E;
  margin-bottom: 15px;
  padding: 20px 25px;
  border-radius: 8px;
  font-size: 1.1em;
  color: #CFD8DC;
  line-height: 1.6;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
  position: relative;
  padding-left: 50px;
}

.page-app-download__benefits-list li::before {
  content: '✔️'; /* Checkmark icon */
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3em;
  color: #FFD700;
}

.page-app-download__benefit-highlight {
  color: #FFD700;
  font-weight: bold;
}

.page-app-download__cta-bottom {
  text-align: center;
  margin-top: 50px;
}

.page-app-download__cta-bottom p {
  font-size: 1.4em;
  color: #FFD700;
  margin-bottom: 25px;
  font-weight: bold;
}

/* FAQ Section */
.page-app-download__faq-section {
  padding: 80px 0;
  background-color: #121212;
}

.page-app-download__faq-accordion {
  max-width: 900px;
  margin: 0 auto;
}

.page-app-download__accordion-item {
  margin-bottom: 15px;
  border: 1px solid #37474F;
  border-radius: 8px;
  overflow: hidden;
}

.page-app-download__accordion-header {
  background-color: #1A237E;
  color: #FFD700;
  padding: 18px 25px;
  width: 100%;
  text-align: left;
  font-size: 1.2em;
  font-weight: bold;
  border: none;
  cursor: pointer;
  transition: background-color 0.3s ease;
  position: relative;
}

.page-app-download__accordion-header:hover {
  background-color: #283593;
}

.page-app-download__accordion-header::after {
  content: '+';
  position: absolute;
  right: 25px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5em;
}

.page-app-download__accordion-header.active::after {
  content: '-';
}

.page-app-download__accordion-content {
  padding: 0 25px;
  background-color: #0D103D;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out, padding 0.4s ease-out;
}

.page-app-download__accordion-content p {
  font-size: 1em;
  color: #CFD8DC;
  line-height: 1.6;
  padding-bottom: 20px;
}

.page-app-download__accordion-content.active {
  max-height: 200px; /* Adjust as needed */
  padding-top: 15px;
}

/* Detail Pages Section */
.page-app-download__detail-pages-section {
  padding: 80px 0;
  background-color: #000000;
}

.page-app-download__detail-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
}

.page-app-download__detail-item {
  background-color: #1A237E;
  padding: 30px;
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
  flex: 1;
  min-width: 300px;
  max-width: 45%;
}

.page-app-download__detail-title {
  font-size: 1.8em;
  color: #FFD700;
  margin-bottom: 15px;
  font-weight: bold;
}

.page-app-download__detail-title a {
  color: #FFD700;
  text-decoration: none;
}

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

.page-app-download__detail-description {
  font-size: 1em;
  color: #CFD8DC;
  line-height: 1.6;
  margin-bottom: 25px;
}

/* Responsive Design */
@media (max-width: 992px) {
  .page-app-download__hero-title {
    font-size: 2.8em;
  }
  .page-app-download__hero-description {
    font-size: 1.1em;
  }
  .page-app-download__section-title {
    font-size: 2em;
  }
  .page-app-download__features-grid,
  .page-app-download__game-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
  .page-app-download__guide-flex {
    flex-direction: column;
    align-items: center;
  }
  .page-app-download__guide-steps,
  .page-app-download__qr-code-wrapper {
    max-width: 100%;
  }
  .page-app-download__detail-item {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .page-app-download__hero-title {
    font-size: 2.2em;
  }
  .page-app-download__hero-description {
    font-size: 1em;
  }
  .page-app-download__hero-buttons {
    flex-direction: column;
    gap: 15px;
  }
  .page-app-download__btn {
    width: 80%;
    margin: 0 auto;
  }
  .page-app-download__section-title {
    font-size: 1.8em;
  }
  .page-app-download__tab-btn {
    padding: 12px 20px;
    font-size: 1em;
  }
  .page-app-download__feature-title,
  .page-app-download__game-title,
  .page-app-download__detail-title {
    font-size: 1.4em;
  }
}

@media (max-width: 480px) {
  .page-app-download__hero-section,
  .page-app-download__why-download-section,
  .page-app-download__download-guide-section,
  .page-app-download__game-features-section,
  .page-app-download__exclusive-benefits-section,
  .page-app-download__faq-section,
  .page-app-download__detail-pages-section {
    padding: 40px 0;
  }
  .page-app-download__hero-title {
    font-size: 1.8em;
  }
  .page-app-download__hero-description {
    font-size: 0.9em;
  }
  .page-app-download__btn {
    font-size: 1em;
    padding: 12px 20px;
  }
  .page-app-download__section-title {
    font-size: 1.5em;
  }
  .page-app-download__section-description {
    font-size: 0.9em;
  }
  .page-app-download__feature-item,
  .page-app-download__game-item,
  .page-app-download__detail-item {
    padding: 20px;
  }
  .page-app-download__qr-code-wrapper {
    width: 100%;
    min-width: unset;
  }
  .page-app-download__accordion-header {
    font-size: 1.1em;
    padding: 15px 20px;
  }
  .page-app-download__accordion-header::after {
    right: 15px;
  }
  .page-app-download__accordion-content {
    padding: 0 20px;
  }
  .page-app-download__accordion-content p {
    padding-bottom: 15px;
  }
}