body {
  font-family: system-ui, sans-serif;
  max-width: 760px;
  margin: 40px auto;
  padding: 0 16px;
  background: #0b0b0b;
  color: #eee;
}

h1 {
  margin-bottom: 1rem;
  text-align: center;
}

#chat {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #111;
  padding: 12px;
  border-radius: 10px;
  min-height: 300px;
  overflow-y: auto;
  white-space: pre-wrap;
}

.user {
  align-self: flex-end;
  background: #333;
  padding: 8px 12px;
  border-radius: 12px;
}

.bot,
.system {
  align-self: flex-start;
  background: #1e1e1e;
  padding: 8px 12px;
  border-radius: 12px;
}

form {
  display: flex;
  gap: 8px;
  margin-top: 1rem;
}

input {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 8px;
  background: #222;
  color: #eee;
}

button {
  padding: 10px 14px;
  border: none;
  border-radius: 8px;
  background: #3a3a3a;
  color: #fff;
  cursor: pointer;
}


.meta {
  font-size: 0.75rem;
  color: #aaa;
  margin-bottom: 2px;
}
.text {
  white-space: normal;
  line-height: 1.4;
}
pre.plan {
  background: #111;
  color: #0f0;
  padding: 8px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 0.85rem;
}