body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f7f9fc;
  padding: 20px;
}

.converter-container {
  max-width: 480px;
  margin: auto;
  background: #fff;
  padding: 24px;
  border-radius: 12px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  text-align: center;
}

.converter-box {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

label {
  font-weight: 600;
}

input, select, button {
  padding: 10px;
  font-size: 1rem;
  border-radius: 6px;
  border: 1px solid #ccc;
}

button {
  background-color: #0066cc;
  color: #fff;
  border: none;
  cursor: pointer;
}

button:hover {
  background-color: #004da1;
}

.result {
  margin-top: 10px;
  font-weight: bold;
  text-align: center;
  color: #333;
}

@media (max-width: 600px) {
  .converter-container {
    padding: 16px;
  }

  h1 {
    font-size: 1.25rem;
  }
}