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

body {
    font-family: 'Times New Roman', Times, serif;
    background-color: #c0c0c0;
    background-image:
        repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255,255,255,.05) 10px, rgba(255,255,255,.05) 20px);
    color: #000000;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    padding: 40px 0;
    background-color: #ffffff;
    border: 5px ridge #808080;
    margin: 20px;
}

.book-layout {
    text-align: center;
}

.book-cover {
    margin-bottom: 30px;
}

.book-cover img {
    width: 280px;
    height: auto;
    border: 4px solid #000000;
}

.book-info h1 {
    font-size: 3rem;
    font-weight: bold;
    color: #0000ff;
    margin-bottom: 10px;
    text-shadow: 2px 2px #ffff00;
}

.subtitle {
    font-size: 1.8rem;
    color: #ff0000;
    margin-bottom: 20px;
    font-style: italic;
}

.authors {
    font-size: 1.2rem;
    margin-bottom: 20px;
    background-color: #ffff00;
    padding: 10px;
    border: 3px solid #000000;
    display: inline-block;
}

.authors strong {
    color: #000000;
}

.tagline {
    font-size: 1.1rem;
    color: #000080;
    margin: 20px auto;
    padding: 15px;
    background-color: #ffffe0;
    border: 2px dashed #ff0000;
    max-width: 600px;
}

.publication-info {
    font-size: 1rem;
    color: #008000;
    margin-bottom: 30px;
    font-weight: bold;
}

.publication-info span {
    display: block;
    margin: 5px 0;
}

.cta-buttons {
    margin: 20px 0;
}

.toc {
    margin-top: 25px;
    padding: 15px;
    background-color: #ccccff;
    border: 3px solid #0000ff;
}

.toc p {
    margin: 8px 0;
    font-size: 1.4rem;
    font-family: Arial, sans-serif;
}

.toc a {
    color: #0000ff;
    text-decoration: underline;
    font-weight: bold;
}

.toc a:visited {
    color: #800080;
}

.toc a:hover {
    color: #ff0000;
    background-color: #ffff00;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 1.1rem;
    font-weight: bold;
    text-decoration: none;
    border: 3px outset #808080;
    margin: 5px;
    font-family: Arial, sans-serif;
}

.btn-primary {
    background-color: #ff0000;
    color: #ffff00;
}

.btn-primary:hover {
    background-color: #cc0000;
    border-style: inset;
}

.btn-secondary {
    background-color: #00ff00;
    color: #000000;
}

.btn-secondary:hover {
    background-color: #00cc00;
    border-style: inset;
}

/* About Section */
.about {
    padding: 30px;
    background-color: #ffffff;
    border: 5px ridge #808080;
    margin: 20px;
}

.about h2,
.authors-section h2,
.details h2 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 25px;
    color: #0000ff;
    text-decoration: underline;
    text-align: center;
}

.description p {
    font-size: 1.1rem;
    margin-bottom: 15px;
    text-align: left;
}

.description p:first-child {
    font-size: 1.3rem;
    color: #ff0000;
    font-weight: bold;
    text-align: center;
}

.review-quote {
    margin-top: 30px;
    padding: 20px;
    background-color: #ffff00;
    border: 4px double #ff0000;
    font-style: italic;
    color: #000000;
    text-align: center;
}

.review-source {
    font-style: normal;
    font-size: 0.9rem;
    color: #000080;
    display: block;
    margin-top: 10px;
    font-weight: bold;
}

/* Authors Section */
.authors-section {
    padding: 30px;
    background-color: #ffccff;
    border: 5px ridge #808080;
    margin: 20px;
}

.authors-section .authors-photo {
    max-width: 450px;
    width: 100%;
    height: auto;
    border: 4px solid #0000ff;
    margin: 0 auto 25px auto;
    display: block;
}

.authors-grid {
    display: block;
}

.author {
    margin-bottom: 30px;
    padding: 20px;
    background-color: #ffffff;
    border: 3px solid #0000ff;
}

.author h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: #ff00ff;
    text-decoration: underline;
}

.author p {
    color: #000000;
    line-height: 1.6;
    font-size: 1.05rem;
}

.author em {
    color: #0000ff;
    font-weight: bold;
}

/* Details Section */
.details {
    padding: 30px;
    background-color: #ccffcc;
    border: 5px ridge #808080;
    margin: 20px;
}

.details-list {
    list-style: none;
    text-align: left;
    max-width: 500px;
    margin: 0 auto;
}

.details-list li {
    font-size: 1.1rem;
    margin: 10px 0;
    padding: 8px;
    background-color: #ffffff;
    border: 2px solid #008000;
}

.details-list .label {
    color: #ff0000;
    margin-right: 8px;
    font-weight: bold;
}

/* Events Section */
.events {
    padding: 30px;
    background-color: #ffffcc;
    border: 5px ridge #808080;
    margin: 20px;
}

.events h2 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 25px;
    color: #0000ff;
    text-decoration: underline;
    text-align: center;
}

.events-intro {
    font-size: 1.2rem;
    text-align: center;
    color: #000000;
    font-style: italic;
}

.events-list {
    list-style: none;
    max-width: 600px;
    margin: 0 auto;
}

.events-list li {
    font-size: 1.2rem;
    margin: 15px 0;
    padding: 12px;
    background-color: #ffffff;
    border: 3px solid #ff0000;
    color: #000000;
    font-weight: bold;
}

.events-list a {
    color: #0000ff;
    text-decoration: underline;
}

.events-list a:visited {
    color: #800080;
}

.events-list a:hover {
    color: #ff0000;
    background-color: #ffff00;
}

/* Footer */
footer {
    padding: 30px;
    background-color: #000080;
    color: #ffffff;
    text-align: center;
    border: 5px ridge #808080;
    margin: 20px;
}

footer .authors-photo {
    max-width: 500px;
    width: 100%;
    height: auto;
    border: 4px solid #ffff00;
    margin-bottom: 15px;
}

footer p {
    font-size: 1rem;
    color: #ffff00;
    font-family: Arial, sans-serif;
}

/* Responsive */
@media (max-width: 768px) {
    .book-info h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1.3rem;
    }

    .book-cover img {
        width: 200px;
    }

    .btn {
        display: block;
        margin: 10px auto;
        max-width: 250px;
    }

    .about h2,
    .authors-section h2,
    .details h2 {
        font-size: 1.8rem;
    }
}