.vocab-hero {
  padding: 5rem 2rem;
  text-align: center;
  background: linear-gradient(to right, var(--primary), var(--accent));
  color: #fff;
  border-bottom: 4px solid var(--accent);
}

.hero-content {
  max-width: 720px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: #f0f0f0;
}

.word-carousel {
  margin: 3rem auto;
  text-align: center;
  max-width: 500px;
  padding: 2rem;
}



.word-card {
  padding: 2rem 1.5rem;
  border-radius: 1.2rem;
  background-color: var(--bg);
  color: var(--text);
  border: 2px solid var(--accent);
  box-shadow: 0 6px 20px rgba(0, 188, 212, 0.25); /* soft teal based on --primary */
  max-width: 420px;
  margin: 2rem auto;
  transition: all 0.4s ease;
  animation: fadeSlide 1s ease forwards;
}

body.dark .word-card {
  background-color: #1e1e1e;
  color: var(--button-text);
  border: 2px solid var(--accent);
  box-shadow: 0 6px 20px rgba(187, 134, 252, 0.3); /* based on --accent in dark */
}



@keyframes fadeSlide {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.vocab-categories {
  padding: 3rem 1.5rem;
  text-align: center;
}

.section-heading {
  font-size: 2rem;
  margin-bottom: 2rem;
  color: var(--primary);
}

.category-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}

.category-card {
  background-color: var(--button-bg);
  border: 2px solid var(--accent);
  border-radius: 1rem;
  padding: 1.5rem;
  width: 230px;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0,0,0,0.07);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.category-emoji {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  display: block;
}