:root {
    --background-color: #000000;
    --text-color: #f8f8f8;
    --max-width: 800px;
    --spacing: 20px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: Arial, sans-serif;
    line-height: 1.8;
    padding: var(--spacing);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.content-box {
    max-width: var(--max-width);
    margin: 50px auto;
    padding: clamp(1rem, 3vw, 2rem); /* Responsive padding */
    background-color: var(--background-color);
}

img {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
    transition: transform 0.3s ease;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

img:hover {
    transform: scale(1.02);
}

p {
    max-width: 75ch; /* Optimal reading length */
    margin: 0 auto 1.8em;
    text-align: justify;
    hyphens: auto;
}

.signature {
    margin-top: 2em;
    font-style: italic;
    text-align: left; /* Keep signature left-aligned */
}

@media print {
    body {
        background: white;
        color: black;
    }
    
    .content-box {
        margin: 0;
        padding: 0;
    }
    
    img:hover {
        transform: none;
    }
}

@media (min-width: 601px) {    
    .content-box {
        margin: 20px auto;
    }
}

@media (max-width: 600px) {
    body {
        padding: 10px;
    }
}