.flask {
    width: 200px;
    height: 300px;
    background: linear-gradient(180deg, #7c446c, #440d3f);
    position: relative;
    border-radius: 15px;
    overflow: hidden;
  }
  
  .flask:before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    height: 95%;
    background: linear-gradient(180deg, #440d3f, #7c446c);
    border-radius: 50%;
  }
  
  .flask:after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 20px;
    background: linear-gradient(180deg, #440d3f, #7c446c);
    border-radius: 50%;
  }
  
  .flask .liquid {
    position: absolute;
    bottom: 20px;
    left: 10%;
    width: 80%;
    height: 70%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.3));
    transform-origin: bottom;
    animation: liquidFloat 2s infinite alternate;
  }
  
  @keyframes liquidFloat {
    0% {
      transform: scaleY(1);
    }
    100% {
      transform: scaleY(0.9);
    }
  }
  
  .flask .bubbles {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
  }
  
  .flask .bubbles:before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: bubble 2s infinite alternate;
  }
  
  @keyframes bubble {
    0% {
      transform: translate(-50%, -50%);
    }
    100% {
      transform: translate(-50%, -70%);
    }
  }