* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Poppins", sans-serif;
}

html,
body {
    height: 100%;
    width: 100%;
}

body {
    background-color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px;
}

/* Main Container */
#main {
    max-width: 600px;
    width: 90%;
    background-color: black;
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 0 15px rgba(0, 174, 255, 0.6);
    animation: fadeIn 0.8s ease-in-out;
}

/* Heading */
#heading {
    text-align: center;
    color: rgb(0, 174, 255);
    letter-spacing: 1px;
    font-size: 28px;
    margin-bottom: 10px;
}

/* Underline */
#mini_underline_div {
    height: 2px;
    width: 80%;
    margin: 0 auto;
    background-color: white;
}

/* Generate Button */
#button_div {
    display: flex;
    justify-content: center;
    margin: 30px;
}

#button_div button {
    padding: 12px 50px;
    border-radius: 20px;
    background-color: gray;
    color: white;
    font-weight: 600;
    font-size: 16px;
    transition: 0.3s all ease;
    border: none;
    cursor: pointer;
}

#button_div button:hover {
    transform: scale(1.05);
    color: rgb(0, 255, 0);
    background-color: #444;
}

/* Input and Submit Button */
#input_div {
    margin-top: 40px;
    display: flex;
    justify-content: space-around;
    gap: 10px;
    flex-wrap: wrap;
}

input {
    padding: 10px 20px;
    border: none;
    border-radius: 10px;
    font-size: 18px;
    flex: 1;
    min-width: 120px;
}

#submit {
    padding: 12px 30px;
    border-radius: 10px;
    font-weight: 600;
    transition: 0.3s all ease;
    background-color: #ddd;
    border: none;
    cursor: pointer;
}

#submit:hover {
    background-color: yellow;
    transform: scale(1.05);
}

/* Final Answer Styling */
.final_ans_right,
.final_ans_wrong {
    color: yellow;
    text-align: center;
    font-weight: 600;
    font-size: 24px;
    margin-top: 10px;
}

/* Good Job Text */
#good_job {
    font-size: 60px;
    text-align: center;
    color: white;
    letter-spacing: 2px;
    display: none;
    animation: popUp 0.6s ease-in-out;
}

/* Animations */
@keyframes fadeIn {
    from {opacity: 0; transform: translateY(-20px);}
    to {opacity: 1; transform: translateY(0);}
}

@keyframes popUp {
    0% {transform: scale(0.5); opacity: 0;}
    100% {transform: scale(1); opacity: 1;}
}

/* Responsive Design */
@media (max-width: 768px) {
    #heading {
        font-size: 24px;
    }

    #button_div button {
        padding: 10px 30px;
        font-size: 14px;
    }

    input {
        font-size: 16px;
    }

    #good_job {
        font-size: 40px;
    }
}

@media (max-width: 480px) {
    #main {
        width: 95%;
        padding: 15px;
    }

    #heading {
        font-size: 20px;
    }

    #button_div button {
        padding: 8px 20px;
    }

    #submit {
        padding: 10px 20px;
    }

    #good_job {
        font-size: 30px;
    }
}