.responsive-grid {
  /* CSS Custom Properties for easy customization */
  --min-column-width: 300px;
  --gap: 1.5rem;
  --padding: 1rem;

  display: grid;
  grid-template-columns: repeat(
    auto-fit, 
    minmax(var(--min-column-width), 1fr)
  );
  gap: var(--gap);
  padding: var(--padding);
  
  /* Ensure grid items don't overflow */
  overflow: hidden;
}

.grid-item {
  /* Maintain aspect ratio */
  aspect-ratio: 16 / 9;
  
  /* Styling */
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 12px;
  padding: 1.5rem;
  color: white;
  
  /* Flexbox for content alignment */
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  
  /* Smooth transitions */
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.grid-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .responsive-grid {
    --min-column-width: 250px;
    --gap: 1rem;
    --padding: 0.5rem;
  }
}

@media (max-width: 480px) {
  .responsive-grid {
    --min-column-width: 200px;
    grid-template-columns: 1fr;
  }
  
  .grid-item {
    aspect-ratio: 4 / 3;
  }
}

/* Alternative: Card-based layout */
.card-grid {
  --card-min-width: 280px;
  --card-max-width: 400px;
  
  display: grid;
  grid-template-columns: repeat(
    auto-fill, 
    minmax(var(--card-min-width), var(--card-max-width))
  );
  justify-content: center;
  gap: 2rem;
  padding: 2rem;
}

.card {
  background: white;
  border-radius: 16px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transition: all 0.3s ease;
}

.card:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}