hr.keyboard-separator {
  height: 1px;
  border: none;
  background: linear-gradient(to right, transparent, #ddd, transparent);
}


.number-preview {
    text-align: center;
    font-size: 16px;
    margin:0px;
    font-weight:600;
}

  .numeric-keyboard {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    max-width: 260px;
    margin: 0 auto;
    justify-content: center;
  }

  .key {
    width: 80px;
    height: 44px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
    border: 2px solid #ccc;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease, box-shadow 0.1s ease;
  }

  .key.number {
    background-color: white;
    color: #1B1B1B;
      border: 2px solid #1B1B1B;
    background-color: white;
    box-shadow: 0 3px 0px #3F3F3F;
  }
  .key.number:hover {
    background-color: #dddddd;
  }

  .key.backspace {
    background-color: #FF4C4C;
    border: 1px solid #DB3737;
    box-shadow: 0 3px 0px #C21D1D;
    color: white;
    font-size: 16px;
  }
  .key.backspace:hover {
    background-color: #F63939;
  }

  .key.submit {
    background-color: #46DE62;
    border: 1px solid #25BE42;
    box-shadow: 0 3px 0px #1EAE39;
    color: white;
    font-size: 16px;
  }
  .key.submit:hover {
    background-color: #33CF50;
  }

  @media (max-width: 560px) {
    .numeric-keyboard {
      max-width: 100%;
      padding: 0 10px;
      gap: 10px;
    }

    .key {
      width: 100%;
      font-size: 18px;
    }

  }