.chatWindow {
  position: fixed;
  bottom: 100px;
  right: 24px;
  width: 400px;
  height: 600px;
  max-height: calc(100vh - 140px);
  background: white;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  z-index: 9999;
  overflow: hidden;
}

.header {
  padding: 16px 20px;
  border-bottom: 1px solid #e5e7eb;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

.closeButton {
  background: none;
  border: none;
  color: white;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.closeButton:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.messagesContainer {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  background: #f9fafb;
}

@media (max-width: 768px) {
  .chatWindow {
    bottom: 0;
    right: 0;
    left: 0;
    width: 100%;
    height: 100%;
    max-height: 100vh;
    border-radius: 0;
  }
}