body {
  font-family: 'Segoe UI', sans-serif;
  background: #f9f9f9;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

#kaira-app {
  background: white;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
  width: 360px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.avatar {
  padding: 16px;
  text-align: center;
  background: #e6f0ff;
}

.avatar img {
  border-radius: 50%;
  width: 80px;
  height: 80px;
}

.chat-window {
  padding: 16px;
  flex: 1;
  overflow-y: auto;
  background: #f2f2f2;
}

.message {
  padding: 10px 14px;
  margin-bottom: 10px;
  border-radius: 14px;
  max-width: 85%;
}

.message.kaira {
  background: #d1eaff;
  align-self: flex-start;
}

.message.user {
  background: #d4f8d4;
  align-self: flex-end;
  margin-left: auto;
}

.input-area {
  display: flex;
  padding: 12px;
  border-top: 1px solid #ccc;
  background: #fff;
}

#user-input {
  flex: 1;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid #ccc;
}

#send-btn {
  margin-left: 8px;
  padding: 10px 16px;
  border: none;
  background: #0077ff;
  color: white;
  border-radius: 10px;
  cursor: pointer;
}

#send-btn:hover {
  background: #005ecb;
}