body {
      margin: 0;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background: linear-gradient(to right, #e0f7fa, #fff);
      display: flex;
      flex-direction: column;
      align-items: center;
      padding: 20px;
    }

    h1 {
      color: #00796b;
      text-align: center;
    }

    .container {
      background: white;
      padding: 20px;
      border-radius: 20px;
      box-shadow: 0 4px 20px rgba(0,0,0,0.1);
      width: 100%;
      max-width: 500px;
      animation: fadeIn 1s ease-in-out;
    }

    label {
      display: block;
      margin-top: 15px;
      font-weight: bold;
    }

    select, input {
      width: 100%;
      padding: 10px;
      margin-top: 5px;
      border: 1px solid #ccc;
      border-radius: 10px;
      box-sizing: border-box;
    }

    button {
      margin-top: 20px;
      width: 100%;
      background-color: #00796b;
      color: white;
      padding: 12px;
      border: none;
      border-radius: 10px;
      font-size: 16px;
      cursor: pointer;
      transition: background-color 0.3s ease;
    }

    button:hover {
      background-color: #004d40;
    }

    .result {
      margin-top: 20px;
      font-size: 16px;
      color: #004d40;
      background: #f1f8f7;
      padding: 15px;
      border-radius: 10px;
      white-space: pre-wrap;
    }

    .nama-bold {
      font-weight: bold;
      font-size: 17px;
    }

    @keyframes fadeIn {
      from {opacity: 0; transform: translateY(-10px);}
      to {opacity: 1; transform: translateY(0);}
    }