body {
  font-family: system-ui, sans-serif;
  margin: 0;
  background: #0b0c10;
  color: #e5e7eb;
}

main {
  max-width: 780px;
  margin: 0 auto;
  padding: 24px;
}

#setup {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

#log {
  height: 62vh;
  overflow: auto;
  padding: 12px;
  background: #111827;
  border-radius: 8px;
}

#log > div {
  padding: 10px 12px;
  margin: 8px 0;
  border-radius: 8px;
  white-space: pre-wrap;
}

#log > .user {
  background: #1f2937;
  text-align: right;
}

#log > .bot {
  background: #0f172a;
}

#log > .system {
  color: #9ca3af;
  font-style: italic;
}

form {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

input,
select {
  flex: 1;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #374151;
  background: #0b1220;
  color: #e5e7eb;
}

button {
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid #374151;
  background: #111827;
  color: #e5e7eb;
  cursor: pointer;
}