body {
  background-color: #0f172a;
  color: #f8fafc;
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  text-align: center;
  background: #1e293b;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

input {
  padding: 0.6rem;
  width: 80%;
  border: none;
  border-radius: 8px;
  margin-top: 1rem;
  font-size: 1rem;
}

button {
  margin-top: 1rem;
  padding: 0.6rem 1.2rem;
  background: #38bdf8;
  border: none;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  color: #0f172a;
}

button:hover {
  background: #0ea5e9;
}

#result {
  margin-top: 1.5rem;
  font-size: 1.2rem;
}