/* Black header text on white background */
.md-header {
  background-color: #fff;
  color: #333;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.md-header__topic {
  color: #333;
}

.md-header .md-header__button {
  color: #333;
}

.md-tabs {
  background-color: #fff;
  border-bottom: 1px solid #eee;
}

.md-tabs__link {
  color: #555;
}

.md-tabs__link--active {
  color: #000;
}

/* Example card grid */
.example-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.example-card {
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.example-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.example-card a {
  text-decoration: none;
  color: inherit;
  display: block;
}

.example-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1px solid #e0e0e0;
}

.example-card .card-body {
  padding: 1rem;
}

.example-card .card-body h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1rem;
  color: #333;
}

.example-card .card-body p {
  margin: 0;
  font-size: 0.85rem;
  color: #666;
  line-height: 1.4;
}

/* Tomography gallery grid */
.tomography-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1rem;
  margin-bottom: 2rem;
}

@media (max-width: 480px) {
  .tomography-grid {
    grid-template-columns: 1fr;
  }
}

.tomography-card {
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  overflow: hidden;
  text-align: center;
  background: #fff;
  transition: box-shadow 0.2s;
}

.tomography-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.tomography-card img {
  width: 100%;
  height: auto;
  display: block;
  border-bottom: 1px solid #e0e0e0;
}

.tomography-label {
  display: block;
  padding: 0.4rem 0.5rem 0.15rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: #333;
}

.tomography-tag {
  display: block;
  padding: 0 0.5rem 0.4rem;
  font-size: 0.7rem;
  color: #888;
}

/* Placeholder for missing thumbnails */
.example-card .placeholder-img {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, #f5f5f5, #e0e0e0);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #999;
  font-size: 0.9rem;
  border-bottom: 1px solid #e0e0e0;
}