.grammar-hero {
  padding: 100px 20px;
  background: linear-gradient(to right, var(--accent), var(--primary));
  color: white;
  text-align: center;
}

.grammar-hero h1 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
}

.grammar-hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.grammar-section {
  padding: 3rem 1.5rem;
}

.section-title {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 2rem;
  color: var(--primary);
}

.accordion-item {
  border: 2px solid var(--accent);
  border-radius: 10px;
  margin-bottom: 1rem;
  background-color: var(--button-bg);
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}

.accordion-header {
  cursor: pointer;
  padding: 1rem 1.2rem;
  font-weight: bold;
  color: var(--button-text);
  background-color: transparent;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-header:hover {
  color: var(--accent);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease, padding 0.3s ease;
  padding: 0 1.2rem;
}

.accordion-content.open {
  padding: 1rem 1.2rem;
}

.accordion-content p,
.accordion-content ul {
  margin-bottom: 1rem;
  color: var(--text);
}

.accordion-content ul {
  list-style-type: disc;
  padding-left: 1.5rem;
}