popup.css

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: url('background.avif');
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.calculator-container {
    background-color: #fff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    text-align: center;
    animation: fadeInUp 0.8s ease-out;
    max-width: 400px;
    width: 100%;
}

button {
    background-color: #4caf50;
    color: #fff;
    padding: 12px 20px;
    /* Smaller button padding */
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    /* Slightly smaller font size */
    margin-top: 15px;
    transition: background-color 0.3s ease, transform 0.2s ease-out;
}

button:hover {
    background-color: #45a049;
    transform: scale(1.05);
}

input {
    padding: 10px;
    /* Smaller input padding */
    margin: 10px 0;
    /* Reduced margin */
    width: 90%;
    /* Adjusted width for responsiveness */
    box-sizing: border-box;
    font-size: 14px;
    /* Slightly smaller font size */
    border: 1px solid #ccc;
    border-radius: 6px;
    transition: border-color 0.3s ease, transform 0.2s ease-out;
}

input:focus {
    outline: none;
    border-color: #4caf50;
    transform: scale(1.02);
}

.result-container {
    font-size: 18px;
    /* Slightly larger font size for result */
    font-weight: bold;
    color: #333;
    margin-top: 15px;
    animation: fadeIn 1s ease-out;
}

/* Media queries for responsiveness */
@media screen and (max-width: 600px) {
    .calculator-container {
        padding: 15px;
    }

    button {
        padding: 10px 15px;
        font-size: 14px;
    }

    input {
        padding: 8px;
        font-size: 12px;
    }

    .result-container {
        font-size: 16px;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}