#ai-chat-button {
    position: fixed;
    bottom: 10%;
    right: 20px;
    background: #2563eb;
    color: #fff;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    font-size: 22px;
    z-index: 9999;
  }
  
  #ai-chat-window {
    position: fixed;
    bottom: 90px;
    right: 20px;
    width: 320px;
    height: 420px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,.15);
    display: none;
    flex-direction: column;
    z-index: 9999;
  }
  
  #ai-chat-header {
    padding: 12px;
    font-weight: 600;
    border-bottom: 1px solid #eee;
  }
  
  #ai-chat-messages {
    flex: 1;
    padding: 12px;
    overflow-y: auto;
    font-size: 14px;
  }
  
  .ai-msg.user { text-align: right; margin-bottom: 8px; }
  .ai-msg.bot { text-align: left; margin-bottom: 8px; }
  
  .ai-msg span {
    display: inline-block;
    padding: 8px 10px;
    border-radius: 8px;
    max-width: 80%;
  }
  
  .ai-msg.user span { background: #2563eb; color: #fff; }
  .ai-msg.bot span { background: #f1f5f9; }
  
  #ai-chat-input {
    display: flex;
    border-top: 1px solid #eee;
  }
  
  #ai-chat-input input {
    flex: 1;
    border: none;
    padding: 10px;
    outline: none;
  }
  
  #ai-chat-input button {
    border: none;
    background: #2563eb;
    color: #fff;
    padding: 0 16px;
    cursor: pointer;
  }