html, body {
    margin: 0;
    padding: 20px;
    font-family: 'Arial', sans-serif;
    text-align: center;
    background-color: #f5f5f5;
}

body {
    position: relative;
    min-height: 100vh;
}

h1 {
    color: #333;
    margin-bottom: 30px;
}

#open-modal, #close-modal {
    background-color: #4285f4;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
    font-size: 16px;
}

#open-modal:hover, #close-modal:hover {
    background-color: #3367d6;
}

#overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    backdrop-filter: blur(3px);
}

#modal {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    animation: modalFadeIn 0.4s ease-out;
}

#modal h2 {
    margin-top: 0;
    color: #333;
}

#modal p {
    color: #666;
    line-height: 1.6;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translate(-50%, -40%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}