:root {
  --hero-gradient: linear-gradient(
    135deg,
    rgba(30, 30, 30, 0.9) 0%,
    rgba(18, 18, 18, 0.95) 100%
  );
}

.hero-section {
  min-height: calc(100vh - 70px);
  display: flex;
  align-items: center;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.hero-content {
  flex: 1;
  z-index: 2;
  max-width: 600px;
}

.hero-logo img {
  display: none;
}

.hero-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  animation: float 6s ease-in-out infinite;
  border-radius: 16px;
}

.hero-section h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.2;
  background: linear-gradient(to right, var(--primary-light), var(--teal));
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 80%;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.primary-button,
.secondary-button {
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s ease;
}

.primary-button {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--bg-dark);
}

.primary-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
}

.secondary-button {
  background: transparent;
  color: var(--primary-light);
  border: 1px solid var(--primary-light);
}

.secondary-button:hover {
  background: rgba(100, 181, 246, 0.1);
  transform: translateY(-2px);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text-highlight);
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto;
}

.study-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 0 auto;
  max-width: 1200px;
}

.study-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 2rem;
  border: var(--border-light);
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.study-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.card-icon {
  font-size: 2rem;
  color: var(--primary-light);
  margin-bottom: 1.5rem;
}

.study-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-highlight);
}

.study-card p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-link {
  color: var(--primary-light);
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.2s;
}

.card-link:hover {
  color: var(--primary);
}

.features-section {
  padding: 5rem 2rem;
  background: var(--card-bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background: rgba(30, 30, 30, 0.6);
  border-radius: var(--border-radius);
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
  border: var(--border-light);
}

.feature-card:hover {
  transform: translateY(-5px);
  background: rgba(30, 30, 30, 0.8);
}

.feature-icon {
  font-size: 2.5rem;
  color: var(--primary-light);
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--text-highlight);
}

.feature-card p {
  color: var(--text-muted);
}

.cta-section {
  padding: 5rem 2rem;
  text-align: center;
  background: linear-gradient(
    135deg,
    rgba(30, 30, 30, 0.9),
    rgba(18, 18, 18, 0.95)
  );
}

.cta-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text-highlight);
}

.cta-content p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto 2rem;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

@keyframes float {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-15px);
  }
  100% {
    transform: translateY(0px);
  }
}

@media (max-width: 1024px) {
  .hero-section {
    flex-direction: column;
    text-align: center;
    padding-top: 4rem;
  }

  .hero-content {
    max-width: 100%;
    margin-bottom: 3rem;
  }

  .hero-subtitle {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .hero-section h1 {
    font-size: 2.5rem;
  }

  .section-header h2 {
    font-size: 2rem;
  }

  .cta-buttons,
  .hero-buttons {
    flex-direction: column;
    gap: 1rem;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
    justify-content: center;
  }

  .hero-logo {
    align-items: center;
  }

  .hero-logo img {
    display: block;
    height: 150px;
    width: auto;
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .hero-section h1 {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section-header h2 {
    font-size: 1.75rem;
  }
}