body {
    background-image: url('image/wp2.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    font-family: 'Segoe UI', sans-serif;
    color: white;
    padding: 20px;
    margin: 0;
  }
  
  /* Container Card */
  .card {
    max-width: 420px;
    margin: auto;
    background: rgba(0, 0, 0, 0.533);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 0 30px rgba(0, 255, 255, 0.2);
    text-align: center;
    backdrop-filter: blur(10px);
  }
  
  /* Neon Logo Box */
  .logo-box {
    background: rgba(0, 0, 0, 0.4);
    padding: 20px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 15px;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
    animation: neon-glow 2s infinite alternate;
  }
  
  .logo {
    width: 140px;
    height: auto;
    filter: drop-shadow(0 0 8px #00f2ff);
  }
  
  /* Judul Neon */
  .title {
    font-size: 2rem;
    color: #00f2ff;
    font-weight: bold;
    text-shadow: 0 0 10px #00f2ff, 0 0 20px #00f2ff;
    margin-bottom: 20px;
  }
  
  h1, h2 {
    color: #ffd700;
    font-size: 1rem;
    margin: 10px 0;
  }
  
  .number-grid {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
  }
  
  .number-grid input {
    width: 50px;
    height: 50px;
    font-size: 1.1rem;
    text-align: center;
    border: none;
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.6);
    color: #00f2ff;
    box-shadow: 0 0 8px #00f2ff;
    outline: none;
  }
  
  
  .additional-box {
    background: rgba(0, 0, 0, 0.6);
    padding: 10px;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 0 8px #ffd700;
  }
  
  .additional-box input {
    width: 60px;
    height: 40px;
    text-align: center;
    border: none;
    font-size: 1.2rem;
    background: #121212;
    color: #ffd700;
    border-radius: 8px;
    box-shadow: 0 0 6px #ffd700;
  }
  
  /* Tombol */
  button {
    background: linear-gradient(145deg, #00f2ff, #007bff);
    border: none;
    padding: 12px 25px;
    font-size: 1rem;
    border-radius: 12px;
    cursor: pointer;
    color: white;
    transition: 0.3s ease;
    box-shadow: 0 0 10px #00f2ff;
  }
  
  button:hover {
    background: #00aaff;
    box-shadow: 0 0 20px #00f2ff;
  }
  

  .result {
    background: #ffffff10;
    color: #00ffea;
    font-size: 2rem;
    font-weight: bold;
    border-radius: 12px;
    padding: 15px;
    margin-top: 20px;
    width: 150px;
    margin-left: auto;
    margin-right: auto;
    letter-spacing: 5px;
    box-shadow: 0 0 15px #00f2ff;
  }
  
  /* Tombol Group */
  .button-group {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
  }
  
  /* Neon Glow Animation */
  @keyframes neon-glow {
    0% {
      box-shadow: 0 0 10px #00f2ff, 0 0 20px #00f2ff;
    }
    100% {
      box-shadow: 0 0 20px #00f2ff, 0 0 40px #00f2ff;
    }
  }