body {
      background: linear-gradient(135deg, #1d3557, #457b9d);
      color: #fff;
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 40px 15px;
    }

    .qr-wrapper {
      width: 100%;
      max-width: 700px;
    }

    .title {
      font-size: 2.5rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .subtitle {
      font-size: 1.1rem;
      color: #e0e0e0;
      margin-bottom: 30px;
    }

    .form-control {
      border-radius: 0;
      padding: 15px;
      font-size: 1rem;
    }

    .btn-generate {
      background-color: #fca311;
      color: #000;
      font-weight: 600;
      padding: 12px;
      font-size: 1.1rem;
      border: none;
      transition: background 0.3s ease;
    }

    .btn-generate:hover {
      background-color: #ff9f1c;
    }

    #qrContainer {
      background-color: #fff;
      padding: 20px;
      border-radius: 10px;
      min-height: 200px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-top: 30px;
    }

    #qrContainer p {
      color: #333;
      margin: 0;
    }

    @media (max-width: 576px) {
      .title {
        font-size: 1.8rem;
      }
    }