body {
  background: #0e0f11;
  color: #fff;
  margin: 0;
  font-family: Arial, sans-serif;
}

#app {
  width: 100%;
  max-width: 650px;
  margin: auto;
  padding: 20px;
}

.title {
  text-align: center;
  font-size: 32px;
  margin-top: 20px;
  color: #32aaff;
}

.subtitle {
  text-align: center;
  margin-top: -10px;
  margin-bottom: 25px;
  opacity: 0.6;
}

#chat-box {
  background: #18191c;
  padding: 15px;
  border-radius: 12px;
  height: 70vh;
  overflow-y: auto;
}

.msg {
  margin-bottom: 18px;
  padding: 12px 18px;
  border-radius: 10px;
  max-width: 85%;
  line-height: 1.4;
}

.user {
  background: #005eff;
  align-self: flex-end;
}

.bot {
  background: #26272b;
}

#input-area {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

#user-input {
  flex: 1;
  padding: 12px;
  border-radius: 8px;
  border: none;
  outline: none;
  font-size: 16px;
}

#send-btn {
  background: #32aaff;
  padding: 12px 20px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  color: white;
  font-size: 16px;
}