* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
}

body {
  background-color: #f4f7f6;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.chat-container {
  width: 100%;
  max-width: 450px;
  height: 600px;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat-header {
  background: #0084ff;
  color: #fff;
  padding: 15px;
  text-align: center;
}

.api-key-container {
  padding: 10px;
  background: #f0f0f0;
  border-bottom: 1px solid #ddd;
}

.api-key-container input {
  width: 100%;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 12px;
}

.chat-box {
  flex: 1;
  padding: 15px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.message {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 15px;
  font-size: 14px;
  line-height: 1.4;
  word-wrap: break-word;
}

.bot-message {
  background: #e9e9eb;
  color: #000;
  align-self: flex-start;
  border-bottom-left-radius: 2px;
}

.user-message {
  background: #0084ff;
  color: #fff;
  align-self: flex-end;
  border-bottom-right-radius: 2px;
}

.input-area {
  display: flex;
  padding: 10px;
  background: #fff;
  border-top: 1px solid #ddd;
}

.input-area input {
  flex: 1;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 20px;
  outline: none;
}

.input-area button {
  margin-left: 8px;
  padding: 10px 18px;
  background: #0084ff;
  color: white;
  border: none;
  border-radius: 20px;
  cursor: pointer;
}

.input-area button:hover {
  background: #006bce;
}