/* Global Styles */
body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f4f8; /* Light background color */
    background-image: linear-gradient(135deg, rgb(240, 182, 205), #ffdd00, #00ff99, #00aaff, #a400ff);
    background-size: 400% 400%; /* Ensure the gradient covers the full background */
    animation: gradient 15s ease infinite; /* Animation for gradient */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

@keyframes gradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Header Styles */
header {
    padding: 0em;
    font-weight: bold;
    font-size: 1.8em; /* Medium size */
    color: #ffffff; /* White color for contrast */
    text-align: center;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7); /* Stronger shadow for visibility */
    margin-bottom: 30px;
}

/* Calculator Container */
#calculator {
    max-width: 400px;
    width: 90%;
    margin: 20px auto;
    padding: 20px;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.9); /* Slightly transparent white */
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3); /* Darker shadow for depth */
    transition: transform 0.3s ease;
}

/* Hover Effect on Calculator */
#calculator:hover {
    transform: scale(1.02);
}

/* Label Styles */
label {
    font-weight: bold;
    display: block;
    margin-bottom: 8px;
    color: #333333;
}

/* Input and Select Styles */
input,
select {
    width: 100%;
    padding: 12px;
    margin-bottom: 16px;
    box-sizing: border-box;
    border-radius: 10px;
    border: 1px solid #cccccc;
    transition: border-color 0.3s, box-shadow 0.3s;
}

/* Input Focus Effect */
input:focus,
select:focus {
    border-color: #6c63ff;
    box-shadow: 0 0 5px rgba(108, 99, 255, 0.5);
    outline: none;
}

/* Button Styles */
button {
    width: 100%;
    height: 50px;
    font-size: 18px;
    cursor: pointer;
    background-color: #6c63ff; /* Button background color */
    color: #ffffff;
    border: none;
    border-radius: 10px;
    transition: background-color 0.3s, transform 0.2s;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

/* Button Hover Effect */
button:hover {
    background-color: #5a52e0; /* Darker shade on hover */
    transform: translateY(-2px);
}

/* Result Styles */
#result {
    margin-top: 16px;
    font-weight: bold;
    font-size: 1.5em;
    color: #333333;
    text-align: center;
    opacity: 0; /* Initially hidden */
    animation: fadeIn 0.5s forwards; /* Animation */
}

/* Fade-in Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Media Queries for Responsiveness */
@media (max-width: 768px) {
    header {
        font-size: 1.6em; /* Adjust for medium screens */
    }

    #calculator {
        max-width: 90%;
    }

    button {
        height: 45px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    header {
        font-size: 1.4em; /* Further adjust for small screens */
    }

    button {
        height: 40px;
        font-size: 14px;
    }

    #result {
        font-size: 1.2em;
    }
}