body {
  margin: 0;
  background: radial-gradient(circle at top left, #0a001a, #1a002e);
  color: #fff;
  font-family: "Poppins", sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  width: 90%;
  max-width: 480px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 0 20px rgba(255, 182, 193, 0.3);
}

h1 {
  text-align: center;
  color: #ffb6c1;
}

.subtitle {
  text-align: center;
  font-size: 0.9rem;
  color: #ccc;
  margin-bottom: 10px;
}

.chat-box {
  height: 380px;
  overflow-y: auto;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  padding: 10px;
}

.message {
  margin: 8px 0;
  padding: 10px 12px;
  border-radius: 10px;
  line-height: 1.4;
}

.you {
  text-align: right;
  background: #ffb6c1;
  color: #000;
}

.nitank {
  text-align: left;
  background: rgba(255, 255, 255, 0.15);
}

.input-area {
  display: flex;
  margin-top: 15px;
}

#user-input {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

#send-btn {
  margin-left: 10px;
  background: #ff6fa0;
  border: none;
  color: #fff;
  border-radius: 10px;
  padding: 10px 20px;
  cursor: pointer;
}

#send-btn:hover {
  background: #ff92b6;
}