body {
  font-family: sans-serif;
  margin: 0;
  padding: 20px;
  background: #f5f5f5;
}

#app {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

#input-panel,
#workflow-panel,
#carrier-panel,
#output-panel {
  background: white;
  padding: 15px;
  border-radius: 6px;
  box-shadow: 0 0 4px rgba(0,0,0,0.1);
}

/* Chat window layout */
#output-panel {
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  gap: 10px;
  height: 400px;
  padding-left: 20px;
  padding-right: 20px;
}

/* Input polish */
#input-text {
  width: 100%;
  padding: 8px;
  resize: none;
  font-size: 14px;
  margin-bottom: 6px;
}

#input-submit {
  padding: 6px 12px;
  font-size: 14px;
  cursor: pointer;
}