/* Mobile-specific styles */
.fullscreen-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, #4a6eff 0%, #5e81ff 100%);
  color: white;
  border: none;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1000;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  transition: all 0.3s ease;
}

.fullscreen-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 15px rgba(0,0,0,0.4);
}

@media (max-width: 768px) {
  .container {
    padding: 10px;
  }
  
  header h1 {
    font-size: 1.8rem;
  }
  
  .category-selector {
    flex-wrap: wrap;
  }
  
  .input-area {
    flex-direction: column;
    gap: 10px;
  }
  
  #objectPrompt {
    width: 100%;
  }
  
  .user-badge {
    margin-bottom: 5px;
  }
  
  #canvas {
    height: 50vh;
  }
  
  /* Adjust announcement banner for mobile */
  #announcement-container {
    max-height: 200px;
    overflow-y: auto;
  }
}