body {
  font-family: Arial, sans-serif;
  background: #f2f2f2;
  margin: 0;
  padding: 0;
}

.converter-container {
  max-width: 500px;
  margin: 60px auto;
  background: #fff;
  padding: 30px;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  text-align: center;
}

h1 {
  margin-bottom: 20px;
  font-size: 1.6rem;
}

.converter {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.input-section {
  display: flex;
  justify-content: center;
  gap: 10px;
}

input {
  padding: 10px;
  font-size: 1rem;
  width: 80px;
  border: 1px solid #ccc;
  border-radius: 8px;
  text-align: center;
}

button {
  padding: 10px;
  background: #007bff;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
}

button:hover {
  background: #0056b3;
}

.result {
  margin-top: 20px;
  font-size: 1.1rem;
  color: #333;
}

.preview-box {
  margin-top: 10px;
  height: 50px;
  width: 100px;
  margin-left: auto;
  margin-right: auto;
  border-radius: 6px;
  border: 1px solid #ccc;
}