body {
  margin: 0;
  background: #0b0f14;
  font-family: system-ui;
  color: white;
}

#layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  height: 100vh;
}

#viewer {
  background: #111;
}

#panel {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

textarea {
  flex: 1;
  background: #141a22;
  color: white;
  border: 1px solid #2a3442;
  border-radius: 8px;
  padding: 12px;
  font-size: 16px;
}

button {
  padding: 14px;
  font-size: 16px;
  background: #3b82f6;
  border: none;
  border-radius: 8px;
  color: white;
  cursor: pointer;
}