body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
      margin: 0;
      background:  #020024;
      background: radial-gradient(circle, rgba(2, 0, 36, 1) 0%, rgba(32, 32, 110, 1) 53%);
      padding: 20px;
    }

    .chat-container {
      width: 100%;
      max-width: 400px;
      height: 700px;
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(10px);
      border-radius: 20px;
      display: flex;
      flex-direction: column;
      overflow: hidden;
      box-shadow: 0 8px 32px rgba(0,0,0,0.3);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .chat-header {
      background: linear-gradient(45deg, #362c49, #31094d);
      color: white;
      text-align: center;
      position: relative;
    } 

    .chat-header img {
      height: 40px;
      margin-top: 10px;
      margin-bottom: 10px;
    }

    .chat-messages {
      flex: 1;
      padding: 15px;
      overflow-y: auto;
      color: white;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .message {
      padding: 12px 15px;
      border-radius: 15px;
      max-width: 85%;
      word-wrap: break-word;
      animation: fadeIn 0.3s ease-in;
    }

    .bot {
      background: rgba(255, 255, 255, 0.2);
      align-self: flex-start;
      border: 1px solid rgba(255, 255, 255, 0.3);
    }

    .user {
      background: linear-gradient(45deg, #362c49, #31094d);
      align-self: flex-end;
      color: white;
    }

    .typing-indicator {
      display: none;
      padding: 10px 15px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 15px;
      align-self: flex-start;
      max-width: 85px;
    }

    .typing-dots {
      display: flex;
      gap: 4px;
    }

    .typing-dots span {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: white;
      animation: typing 1.4s infinite ease-in-out;
    }

    .typing-dots span:nth-child(1) { animation-delay: 0s; }
    .typing-dots span:nth-child(2) { animation-delay: 0.2s; }
    .typing-dots span:nth-child(3) { animation-delay: 0.4s; }

    .chat-input {
      display: flex;
      border-top: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(255, 255, 255, 0.1);
      padding: 15px;
      gap: 10px;
    }

    .chat-input input {
      flex: 1;
      padding: 12px 15px;
      border: none;
      outline: none;
      background: rgba(255, 255, 255, 0.2);
      color: white;
      border-radius: 25px;
      font-size: 14px;
      border: 1px solid rgba(255, 255, 255, 0.3);
    }

    .chat-input input::placeholder {
      color: rgba(255, 255, 255, 0.7);
    }

    .chat-input button {
      background: linear-gradient(45deg, #ff6b6b, #ee5a24);
      color: white;
      border: none;
      padding: 12px 20px;
      cursor: pointer;
      border-radius: 25px;
      font-weight: bold;
      transition: transform 0.2s ease;
    }

    .chat-input button:hover {
      transform: scale(1.05);
    }

    .chat-input button:active {
      transform: scale(0.95);
    }

    .suggestions {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 10px;
    }

    .suggestion-btn {
      background: rgba(255, 255, 255, 0.2);
      color: white;
      border: 1px solid rgba(255, 255, 255, 0.3);
      padding: 6px 12px;
      border-radius: 15px;
      cursor: pointer;
      font-size: 12px;
      transition: all 0.2s ease;
    }

    .suggestion-btn:hover {
      background: rgba(255, 255, 255, 0.3);
      transform: translateY(-2px);
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: translateY(0); }
    }

    @keyframes typing {
      0%, 60%, 100% { transform: translateY(0); }
      30% { transform: translateY(-10px); }
    }

    /* Custom scrollbar */
    .chat-messages::-webkit-scrollbar {
      width: 6px;
    }

    .chat-messages::-webkit-scrollbar-track {
      background: rgba(255, 255, 255, 0.1);
      border-radius: 3px;
    }

    .chat-messages::-webkit-scrollbar-thumb {
      background: rgba(255, 255, 255, 0.3);
      border-radius: 3px;
    }

    .donghua-title {
      font-weight: bold;
      color: #ffd700;
    }

    .rating {
      color: #ffd700;
    }