.theme-selector {
  width: 100%;
}

.themes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.theme-card {
  background: white;
  border: 2px solid #e2e8f0;
  border-radius: 0.75rem;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
}

.theme-card:hover {
  border-color: #cbd5e1;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.theme-card.selected {
  border-color: #22c55e;
  box-shadow: 0 4px 6px -1px rgba(34, 197, 94, 0.2);
}

.theme-preview {
  position: relative;
  height: 120px;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.color-preview-strip {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.color-swatch {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 3px solid white;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
}

.no-colors {
  color: #9ca3af;
  font-size: 0.875rem;
  text-align: center;
  font-style: italic;
}

.selection-indicator {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 10;
}

.theme-info {
  padding: 1.5rem;
}

.theme-name {
  margin: 0 0 0.5rem 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: #1e293b;
}

.theme-description {
  margin: 0 0 1rem 0;
  color: #64748b;
  font-size: 0.875rem;
  line-height: 1.4;
}

.theme-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.theme-stats {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: #6b7280;
}

.layouts-count {
  font-weight: 500;
  color: #475569;
}

.theme-author {
  color: #6b7280;
}

.theme-version {
  color: #9ca3af;
  font-family: 'Courier New', monospace;
}

.theme-actions {
  display: flex;
  gap: 0.5rem;
}

.preview-link {
  color: #3b82f6;
  text-decoration: none;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  transition: background-color 0.2s ease;
}

.preview-link:hover {
  background: #eff6ff;
  text-decoration: none;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem;
  color: #6b7280;
}

.empty-state h3 {
  margin: 0 0 0.5rem 0;
  color: #374151;
}

.empty-state p {
  margin: 0;
  font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .themes-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .theme-card {
    min-width: 0;
  }
  
  .theme-preview {
    height: 100px;
    padding: 0.75rem;
  }
  
  .color-swatch {
    width: 36px;
    height: 36px;
  }
  
  .theme-info {
    padding: 1rem;
  }
  
  .theme-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
}

/* Focus states for accessibility */
.theme-card:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Animation for selection */
@keyframes selectPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.theme-card.selected .selection-indicator {
  animation: selectPulse 0.3s ease-out;
}