.chat-bubble {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    z-index: 10000;
  }

  .chat-bubble:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
  }

  .chat-bubble svg {
    width: 28px;
    height: 28px;
    fill: white;
  }

  .chat-widget {
    position: fixed;
    bottom: 100px;
    right: 24px;
    width: 380px;
    height: 600px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    display: none;
    flex-direction: column;
    overflow: hidden;
    z-index: 10000;
    animation: slideUp 0.3s ease;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  }

  .chat-widget.active {
    display: flex;
  }

  @keyframes slideUp {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .chat-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .chat-header h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
  }

  .chat-header p {
    font-size: 13px;
    opacity: 0.9;
    margin: 4px 0 0 0;
  }

  .close-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    font-size: 18px;
  }

  .close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
  }

  .chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background: #f7f8fa;
  }

  .message {
    margin-bottom: 16px;
    display: flex;
    animation: fadeIn 0.3s ease;
  }

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

  .message.user {
    justify-content: flex-end;
  }

  .message-content {
    max-width: 75%;
    padding: 12px 16px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.4;
  }

  .message.bot .message-content {
    background: white;
    color: #333;
    border-bottom-left-radius: 4px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  }

  .message.user .message-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-bottom-right-radius: 4px;
  }

  .typing-indicator {
    display: none;
    padding: 12px 16px;
    background: white;
    border-radius: 18px;
    border-bottom-left-radius: 4px;
    width: fit-content;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  }

  .typing-indicator.active {
    display: block;
    animation: fadeIn 0.3s ease;
  }

  .typing-indicator span {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #999;
    margin: 0 2px;
    animation: bounce 1.4s infinite;
  }

  .typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
  }

  .typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
  }

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

  .chat-input {
    padding: 16px;
    background: white;
    border-top: 1px solid #e5e7eb;
    display: flex;
    gap: 8px;
  }

  .chat-input input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid #e5e7eb;
    border-radius: 24px;
    font-size: 14px;
    outline: none;
    transition: border 0.2s;
    font-family: inherit;
  }

  .chat-input input:focus {
    border-color: #667eea;
  }

  .chat-input button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 24px;
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.2s;
    font-family: inherit;
  }

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

  .chat-input button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: scale(1);
  }

  @media (max-width: 480px) {
    .chat-widget {
      width: calc(100vw - 32px);
      height: calc(100vh - 120px);
      right: 16px;
      bottom: 90px;
    }

    .chat-bubble {
      right: 16px;
      bottom: 16px;
    }
  }