body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f7f8fc;
  color: #1c2230;
}

.container {
  max-width: 840px;
  margin: 0 auto;
  padding: 24px;
}

h1 {
  margin-bottom: 8px;
}

.subtitle {
  margin-top: 0;
  color: #56617a;
}

.controls {
  margin: 12px 0 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logout-form {
  margin-left: auto;
}

.chat {
  background: #fff;
  border: 1px solid #d8deea;
  border-radius: 8px;
  min-height: 360px;
  max-height: 60vh;
  overflow: auto;
  padding: 12px;
}

.msg {
  border-radius: 8px;
  padding: 10px 12px;
  margin: 8px 0;
  white-space: pre-wrap;
}

.msg.user {
  background: #e8f2ff;
}

.msg.assistant {
  background: #f0f3f8;
}

.feedback {
  margin-top: 6px;
  display: flex;
  gap: 8px;
}

.chat-form {
  margin-top: 12px;
  display: flex;
  gap: 10px;
}

textarea {
  flex: 1;
  min-height: 64px;
  padding: 10px;
}

input[type="password"],
input[type="text"] {
  flex: 1;
  min-height: 40px;
  padding: 8px;
}

button {
  padding: 10px 14px;
  cursor: pointer;
}