* {
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
  }

  body {
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-image: url(money.jpg);
   background-size: cover;
  }

  .calculator {
    background: #fff;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
    width: 350px;
    text-align: center;
    transition: transform 0.3s ease;
  }

  .calculator:hover {
    transform: translateY(-5px);
  }

  h1 {
    margin-bottom: 25px;
    color: #333;
    font-weight: 600;
    letter-spacing: 1px;
  }

  input, select, button {
    width: 100%;
    padding: 12px 15px;
    margin: 12px 0;
    border-radius: 12px;
    border: 1px solid #ccc;
    font-size: 16px;
    outline: none;
    transition: all 0.3s ease;
  }

  input:focus, select:focus {
    border-color: #74ebd5;
    box-shadow: 0 0 10px rgba(116,235,213,0.5);
  }

  button {
    background: #7a2f14;
    color: #fff;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease;
  }

  button:hover {
    background: #67d8c3;
    transform: scale(1.05);
  }

  .result {
    margin-top: 25px;
    padding: 20px;
    border-radius: 15px;
    background: #f9f9f9;
    color: #333;
    font-weight: bold;
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.5s ease;
  }

  .result.show {
    opacity: 1;
    transform: translateY(0);
    background: linear-gradient(135deg, #a15153, #fad0c4);
    color: #fff;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
  }