#hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: start;
  height: 100vh;
}

#hero h1 {
  font-size: 8rem;
  font-weight: bold;
  margin-top: 15rem;
  filter: drop-shadow(0 0 4rem var(--foreground));
}

#hero h2 {
  font-size: 2rem;
  margin-top: 1rem;
}

#about {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 16rem;
  background-color: var(--card);
}

#about h2 {
  font-size: 2rem;
  font-weight: bold;
}

#courses {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
}

#courses h2 {
  font-size: 3rem;
  margin-bottom: 3rem;
}

#courses h3 {
  font-size: 2rem;
  margin-bottom: 2rem;
}

.courses-list {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 4rem;
  margin: 0 16rem;
}

.course-item {
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 2rem;
  margin-bottom: 2rem;
  max-width: 36rem;
  background-color: var(--card);
  transition:
    background-color 0.1s ease,
    box-shadow 0.1s ease;
}

.course-item:hover {
  background-color: var(--background);
  box-shadow: 0 0 1rem var(--foreground);
}

.course-item a {
  text-decoration: none;
  color: var(--primary);
  font-size: 1.5rem;
  font-weight: bold;
  transition: color 0.1s ease;
}

.course-item a:hover {
  color: var(--muted-foreground);
}

/* Responsive design */
@media (max-width: 1200px) {
  #about {
    padding: 4rem 8rem;
  }

  .courses-list {
    margin: 0 4rem;
  }
}

@media (max-width: 768px) {
  #hero h1 {
    font-size: 4rem;
    margin-top: 10rem;
  }

  #hero h2 {
    font-size: 1.5rem;
    text-align: center;
    padding: 0 1rem;
  }

  #about {
    padding: 2rem 2rem;
    font-size: 0.9375rem;
  }

  #courses {
    padding: 2rem 1rem;
  }

  #courses h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
  }

  #courses h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
  }

  .courses-list {
    flex-direction: column;
    margin: 0 1rem;
    gap: 2rem;
  }

  .course-item {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  #hero h1 {
    font-size: 3rem;
    margin-top: 8rem;
  }

  #hero h2 {
    font-size: 1.25rem;
  }

  #about {
    padding: 1.5rem 1rem;
    font-size: 0.875rem;
  }

  #courses h2 {
    font-size: 1.75rem;
  }

  #courses h3 {
    font-size: 1.25rem;
  }

  .course-item {
    padding: 1.5rem;
  }

  .course-item a {
    font-size: 1.25rem;
  }
}