body {
  font-family: Arial;
  text-align: center;
  background: #111;
  color: white;
}

.container {
  margin: 40px auto;
  padding: 20px;
  max-width: 700px;
  background: #1e1e1e;
  border-radius: 12px;
}

select, button {
  margin: 5px;
  padding: 10px;
  border-radius: 6px;
  border: none;
}

button {
  background: #ff4757;
  color: white;
  cursor: pointer;
}

button:hover {
  background: #ff6b81;
}

#result {
  margin-top: 20px;
  padding: 15px;
  border: 1px solid #444;
  min-height: 50px;
}

#history {
  margin-top: 20px;
  text-align: left;
  max-height: 200px;
  overflow-y: auto;
}