.otp-wrapper {
    font-family: 'Segoe UI', sans-serif;
  }

  .otp-wrapper .otp-modal {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    background: rgba(0, 0, 0, 0.5); /* Overlay background */
    backdrop-filter: blur(2px);
    justify-content: center;
    align-items: center;
    z-index: 9999;
    padding: 20px;
    box-sizing: border-box;
  }

  .otp-wrapper .otp-modal.show {
    display: flex;
  }

  .otp-wrapper .otp-box {
    background: #ffffff; /* Modal background */
    color: #111827;
    padding: 30px 20px;
    width: 100%;
    max-width: 380px;
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    text-align: center;
    position: relative;
  }

  .otp-wrapper .otp-box h2 {
    margin-bottom: 8px;
    font-size: 20px;
  }

  .otp-wrapper .otp-box p {
    color: #6b7280;
    font-size: 14px;
    margin-bottom: 20px;
  }

  .otp-wrapper .otp-inputs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
  }

  .otp-wrapper .otp-inputs input {
    width: 50px;
    height: 55px;
    font-size: 22px;
    text-align: center;
    border: 1px solid #ccc;
    border-radius: 8px;
    outline: none;
    transition: all 0.2s ease;
  }

  .otp-wrapper .otp-inputs input:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
  }

  .otp-wrapper .close-btn {
    position: absolute;
    top: 10px;
    right: 14px;
    font-size: 22px;
    cursor: pointer;
    color: #aaa;
  }

  .otp-wrapper #otp-message {
    font-size: 14px;
    margin-top: 10px;
    color: #e11d48; /* red by default for errors */
  }

  .otp-wrapper button {
    padding: 12px 22px;
    background-color: #6366f1;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    display: block;
    transition: background 0.2s ease;
  }

  .otp-wrapper button:hover {
    background-color: #4f46e5;
  }

  @media (max-width: 480px) {
    .otp-wrapper .otp-box {
      padding: 24px 16px;
    }

    .otp-wrapper .otp-inputs {
      gap: 8px;
    }

    .otp-wrapper .otp-inputs input {
      width: 45px;
      height: 50px;
      font-size: 20px;
    }

    .otp-wrapper .otp-box h2 {
      font-size: 18px;
    }

    .otp-wrapper button {
      padding: 10px 18px;
      font-size: 15px;
    }
  }