body {
  font-family: Arial, sans-serif;
  background: #0f0f12;
  color: #eaeaea;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 16px;
}

.card {
  background: #1a1a22;
  padding: 32px;
  border-radius: 14px;
  width: 100%;
  max-width: 520px;
}

h1 {
  font-size: 22px;
  margin-bottom: 20px;
}

input, select {
  width: 100%;
  padding: 14px;
  margin-top: 12px;
  border-radius: 10px;
  border: none;
  font-size: 16px;
}

button {
  width: 100%;
  margin-top: 14px;
  padding: 14px;
  border: none;
  border-radius: 10px;
  background: #4c6fff;
  color: white;
  font-size: 16px;
  cursor: pointer;
}

.output {
  margin-top: 16px;
  padding: 16px;
  background: #111118;
  border-radius: 10px;
}