.overview_items {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.overview_card {
  display: block;
  background: var(--card-bg);       /* auto dark/light */
  border-radius: 10px;
  border: 1px solid var(--card-border); /* auto dark/light */
  padding: 1.5rem;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.overview_card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.2); /* stronger for dark mode */
}

.overview_card h2 {
  margin-top: 0;
  font-size: 1.2rem;
  color: var(--text-title); /* adapts to theme */
}

.overview_card p {
  margin-top: 0.5rem;
  font-size: 0.95rem;
  color: var(--text-normal); /* adapts to theme */
  line-height: 1.4;
}