body {
    font-family: "Poppins", sans-serif;
    background-image: url("assets/background.jpg");
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background-color: rgba(200, 234, 245, 0.1);
    padding: 120px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.6);
    max-width: 400px;
    text-align: center;
    position: relative;
}

.header-image {
    width: 100%;
    height: 50%;
    position: absolute;
    top: -60px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0);
}

h1 {
    font-size: 35px;
    margin-top: 90px;
    color: white;
}

input[type="number"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 30px;
    border: 1px solid #dddddd;
    border-radius: 5px;
    font-size: 16px;
}

/* Button Animation */
button {
    padding: 10px 20px;
    border: 1px solid black;
    border-radius: 5px;
    background: linear-gradient(to top left, purple, yellow);
    color: #080707;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background: linear-gradient(to top left, red, rgb(246, 129, 4));
    box-shadow: rgb(27, 25, 25, 0.4);
}

.result {
    margin-top: 20px;
    font-size: 24px;
    font-weight: 600;
    color: white;
}

@media (max-width: 768px) {
    .container {
        padding: 40px;
    }

    input[type="number"] {
        font-size: 14px;
    }

    button {
        font-size: 14px;
    }

    .result {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 20px;
    }

    input[type="number"] {
        font-size: 12px;
    }

    button {
        font-size: 12px;
    }

    .result {
        font-size: 18px;
    }
}