body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #89f7fe, #66a6ff);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
  }
  
  .container {
    background: white;
    padding: 30px 25px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
    text-align: center;
  }
  
  .container h2 {
    margin-bottom: 20px;
    color: #333;
  }
  
  label {
    display: block;
    margin-top: 15px;
    margin-bottom: 5px;
    font-weight: bold;
    color: #444;
    text-align: left;
  }
  
  select, input {
    width: 100%;
    max-width: 100%;
    padding: 12px;
    font-size: 1rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    box-sizing: border-box;
    transition: border-color 0.3s;
  }
  
  select:focus, input:focus {
    outline: none;
    border-color: #66a6ff;
  }
  
  button {
    width: 100%;
    background: #66a6ff;
    color: white;
    padding: 12px;
    margin-top: 20px;
    font-size: 1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s ease;
  }
  
  button:hover {
    background: #4a90e2;
  }
  
  #resultado {
    margin-top: 20px;
    padding: 10px;
    background-color: #ffffff;
    color: #333;
    font-size: 1.1rem;
    border-radius: 5px;
    white-space: pre-line;
  }