/* ========== BASE STYLES ========== */
body {
    font-family: "Times New Roman", serif;
    font-size: 12pt;
    line-height: 1.5;
    margin: 0;
    padding: 20px;
    color: #333;
    hyphens: auto;
}

/* ========== TITLE PAGE ========== */
.title-page {
    text-align: center;
    page-break-after: always;
    padding-top: 2in;
}

.book-title {
    font-size: 36pt;
    margin: 20px 0;
    font-weight: bold;
    letter-spacing: 2px;
}

.book-author {
    font-size: 24pt;
    margin: 15px 0;
    color: #444;
}

.publication-details {
    margin-top: 1in;
    font-size: 14pt;
}

/* ========== HEADINGS ========== */
h1 {
    font-size: 24pt;
    margin: 24px 0;
    page-break-after: avoid;
}

h2 {
    font-size: 20pt;
    font-weight: bold;
    margin: 24px 0 12px 0;
    padding-bottom: 6px;
    border-bottom: 2px solid #ccc;
    page-break-after: avoid;
}

h3 {
    font-size: 16pt;
    font-weight: bold;
    margin: 18px 0 9px 0;
    page-break-after: avoid;
}

/* ========== CONTENT STRUCTURE ========== */
.contents {
    page-break-after: always;
}

.contents-title {
    font-size: 24pt;
    text-align: center;
    margin: 40px 0;
    border-bottom: 3px double #333;
    padding-bottom: 15px;
}

.contents-list {
    font-size: 14pt;
    margin: 0 auto;
    width: 70%;
    counter-reset: chapter;
}

.contents-list li {
    margin: 15px 0;
    padding-left: 30px;
    position: relative;
    page-break-inside: avoid;
}

.contents-list li:before {
    content: counter(chapter) ".";
    counter-increment: chapter;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* ========== TEXT ELEMENTS ========== */
p {
    margin: 0 0 12px 0;
    text-align: justify;
}

em {
    font-style: italic;
}

strong {
    font-weight: bold;
}

blockquote {
    margin: 15px 30px;
    padding: 10px 20px;
    border-left: 4px solid #ccc;
    color: #666;
}

/* ========== LISTS ========== */
ul, ol {
    margin: 12px 0;
    padding-left: 40px;
}

li {
    margin: 6px 0;
    page-break-inside: avoid;
}

/* ========== MATH CONTENT ========== */
.MathJax {
    font-size: 1.1em !important;
}

mjx-container {
    overflow-x: auto;
    overflow-y: hidden;
    margin: 4px 0;
}

/* ========== SPECIAL SECTIONS ========== */
.preface {
    margin: 40px 0;
}

.callout-box {
    border-left: 4px solid #0066cc;
    padding-left: 20px;
    margin: 20px 0;
    font-style: italic;
}

.emphasis-note {
    font-weight: bold;
    color: #0066cc;
    margin-top: 15px;
    text-align: center;
}

/* ========== VISUAL ELEMENTS ========== */
hr {
    border: 0;
    border-top: 1px solid #ccc;
    margin: 24px 0;
}

img {
    max-width: 100%;
    height: auto;
    margin: 12px auto;
    display: block;
}

/* ========== PRINT STYLES ========== */
@media print {
    body {
        padding: 0.5in;
    }
    
    .title-page {
        padding-top: 3in;
    }
    
    h2 {
        page-break-before: always;
    }
    
    img {
        max-width: 90% !important;
    }
    
    script, link, meta, title {
        display: none !important;
    }
    
    .chapter, .example {
        page-break-inside: avoid;
    }
    
    ul, ol {
        page-break-inside: avoid;
    }
    
    .contents-list {
        width: 80%;
    }
    
    .callout-box {
        border-width: 3px;
    }
}

@page {
    size: A4;
    margin: 1in;
    @top-right {
        content: counter(page);
        font-size: 10pt;
    }
}