body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #f7f7f8;
}
#chat-container {
  max-width: 720px;
  margin: auto;
  height: 100vh;
  display: flex;
  flex-direction: column;
}
#chat-header {
  background-color: #10a37f;
  color: white;
  padding: 12px;
  font-weight: bold;
  font-size: 1.1em;
}
#chat-box {
  flex: 1;
  padding: 10px;
  overflow-y: auto;
  background: white;
}
.message {
  margin: 10px 0;
  padding: 10px;
  border-radius: 6px;
}
.user {
  background: #d1e7dd;
  text-align: right;
}
.ai {
  background: #e9ecef;
  text-align: left;
}
#chat-form {
  display: flex;
  padding: 10px;
  border-top: 1px solid #ccc;
  background: white;
}
#user-input {
  flex: 1;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  resize: none;
}
button {
  background-color: #10a37f;
  color: white;
  border: none;
  padding: 10px 16px;
  margin-left: 10px;
  border-radius: 4px;
  cursor: pointer;
}