:root {
    --primary: #1a1a2e;
    --secondary: #16213e;
    --accent: #0f3460;
    --gold: #c9a227;
    --text: #333;
    --text-light: #666;
    --bg: #fff;
    --bg-light: #f8f9fa;
    --border: #e0e0e0;
    --max-width: 1200px;
}

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

body {
    font-family: 'Georgia', 'Times New Roman', serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--gold); }

img { max-width: 100%; height: auto; }

/* Header */
.site-header {
    background: var(--primary);
    color: #fff;
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    height: 70px;
}

.site-logo {
    font-family: 'Georgia', serif;
    font-size: 1.3rem;
    font-weight: bold;
    color: #fff;
    letter-spacing: 0.5px;
}

.site-logo span { color: var(--gold); }

.main-nav { display: flex; gap: 30px; align-items: center; }
.main-nav a {
    color: #ccc;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s;
}
.main-nav a:hover, .main-nav a.active { color: var(--gold); }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 50%, var(--accent) 100%);
    color: #fff;
    padding: 80px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 15px;
    font-weight: 400;
    letter-spacing: 1px;
}

.hero h1 span { color: var(--gold); }

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-cta {
    display: inline-block;
    background: var(--gold);
    color: var(--primary);
    padding: 14px 35px;
    font-size: 1rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 3px;
    transition: background 0.3s;
}

.hero-cta:hover { background: #d4af37; color: var(--primary); }

/* Container */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* Book Grid */
.books-section { padding: 80px 20px; background: var(--bg-light); }
.books-section h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 50px;
    color: var(--primary);
    font-weight: 400;
}

.books-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.book-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.book-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.book-cover {
    height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.book-cover-inner {
    width: 180px;
    height: 260px;
    border-radius: 4px;
    box-shadow: 5px 5px 20px rgba(0,0,0,0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    text-align: center;
    color: #fff;
    position: relative;
}

.book-cover-inner::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 12px;
    background: rgba(0,0,0,0.2);
    border-radius: 4px 0 0 4px;
}

.book-cover-inner h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    line-height: 1.3;
    font-weight: 700;
}

.book-cover-inner .cover-author {
    font-size: 0.75rem;
    opacity: 0.85;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.book-cover-inner .cover-line {
    width: 40px;
    height: 2px;
    background: rgba(255,255,255,0.5);
    margin: 12px 0;
}

.book-card-body { padding: 25px; }
.book-card-body h3 { font-size: 1.3rem; margin-bottom: 8px; color: var(--primary); }
.book-card-body .book-subtitle { font-size: 0.9rem; color: var(--text-light); margin-bottom: 12px; font-style: italic; }
.book-card-body p { font-size: 0.95rem; color: var(--text-light); margin-bottom: 15px; }

.book-links { display: flex; gap: 10px; flex-wrap: wrap; }
.book-links a {
    font-size: 0.8rem;
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    transition: all 0.3s;
}
.book-links a:hover { border-color: var(--gold); color: var(--gold); }

/* Author Section */
.author-section {
    padding: 80px 20px;
    background: #fff;
}

.author-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 50px;
    align-items: start;
}

.author-photo-placeholder {
    width: 300px;
    height: 380px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 4rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.author-photo-placeholder span {
    font-size: 0.9rem;
    margin-top: 15px;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.author-bio h2 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 20px;
    font-weight: 400;
}

.author-bio p { margin-bottom: 15px; color: var(--text-light); }

.author-links {
    margin-top: 25px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.author-links a {
    font-size: 0.85rem;
    padding: 8px 18px;
    background: var(--bg-light);
    border-radius: 3px;
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    transition: all 0.3s;
}

.author-links a:hover { background: var(--gold); color: #fff; }

/* Blog Section */
.blog-section { padding: 80px 20px; background: var(--bg-light); }
.blog-section h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 50px;
    color: var(--primary);
    font-weight: 400;
}

.blog-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.blog-card {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.blog-card:hover { transform: translateY(-3px); }
.blog-card .blog-date {
    font-size: 0.8rem;
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    margin-bottom: 10px;
}
.blog-card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.blog-card h3 a { color: var(--primary); }
.blog-card h3 a:hover { color: var(--gold); }

/* Page Content */
.page-hero {
    padding: 60px 20px;
    text-align: center;
    color: #fff;
}

.page-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 400;
}

.page-hero p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.breadcrumb {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 15px 20px;
    font-size: 0.85rem;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-light);
}

.breadcrumb a { color: var(--text-light); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span { margin: 0 8px; }

.page-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 50px 20px 80px;
}

.page-content h2 {
    font-size: 1.6rem;
    color: var(--primary);
    margin: 35px 0 15px;
    font-weight: 400;
}

.page-content h3 {
    font-size: 1.3rem;
    color: var(--primary);
    margin: 25px 0 12px;
}

.page-content p { margin-bottom: 15px; }

.page-content ul, .page-content ol {
    margin: 15px 0 15px 25px;
}

.page-content li { margin-bottom: 8px; }

.page-content blockquote {
    border-left: 3px solid var(--gold);
    padding: 15px 20px;
    margin: 25px 0;
    background: var(--bg-light);
    font-style: italic;
    color: var(--text-light);
}

/* Book Detail Page */
.book-detail-hero {
    padding: 60px 20px;
    color: #fff;
}

.book-detail-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 50px;
    align-items: center;
}

.book-detail-cover {
    width: 220px;
    height: 320px;
    border-radius: 6px;
    box-shadow: 8px 8px 30px rgba(0,0,0,0.4);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 25px;
    text-align: center;
    color: #fff;
    position: relative;
}

.book-detail-cover::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 15px;
    background: rgba(0,0,0,0.2);
    border-radius: 6px 0 0 6px;
}

.book-detail-cover h2 {
    font-size: 1.5rem;
    line-height: 1.3;
    margin-bottom: 12px;
}

.book-detail-cover .cover-line {
    width: 40px;
    height: 2px;
    background: rgba(255,255,255,0.5);
    margin: 10px 0;
}

.book-detail-cover .cover-author {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0.85;
}

.book-detail-info h1 {
    font-size: 2.5rem;
    margin-bottom: 8px;
    font-weight: 400;
}

.book-detail-info .subtitle {
    font-size: 1.2rem;
    opacity: 0.85;
    font-style: italic;
    margin-bottom: 20px;
}

.book-detail-info p {
    font-size: 1.05rem;
    line-height: 1.7;
    opacity: 0.9;
    margin-bottom: 25px;
}

.buy-buttons { display: flex; gap: 12px; flex-wrap: wrap; }
.buy-btn {
    display: inline-block;
    padding: 12px 28px;
    border: 2px solid #fff;
    color: #fff;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 3px;
    transition: all 0.3s;
}
.buy-btn:hover { background: #fff; color: var(--primary); }
.buy-btn.primary-btn { background: var(--gold); border-color: var(--gold); color: var(--primary); }
.buy-btn.primary-btn:hover { background: #d4af37; border-color: #d4af37; }

/* Reviews */
.reviews { margin: 40px 0; }
.review {
    background: var(--bg-light);
    padding: 20px 25px;
    border-radius: 6px;
    margin-bottom: 15px;
    border-left: 3px solid var(--gold);
}
.review p { font-style: italic; margin-bottom: 8px; }
.review .reviewer { font-size: 0.85rem; color: var(--text-light); font-style: normal; }

/* Chapter List */
.chapter-list { margin: 30px 0; }
.chapter-item {
    display: block;
    padding: 20px 25px;
    background: var(--bg-light);
    border-radius: 6px;
    margin-bottom: 10px;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}
.chapter-item:hover { border-left-color: var(--gold); background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.chapter-item .chapter-num {
    font-size: 0.8rem;
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 5px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
.chapter-item h3 { font-size: 1.1rem; color: var(--primary); margin-bottom: 5px; }
.chapter-item p { font-size: 0.9rem; color: var(--text-light); }

/* Sidebar / TOC */
.content-with-sidebar {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    padding: 40px 20px 80px;
}

.sidebar {
    position: sticky;
    top: 90px;
    align-self: start;
}

.sidebar h3 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-light);
    margin-bottom: 15px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.sidebar a {
    display: block;
    padding: 8px 12px;
    font-size: 0.9rem;
    color: var(--text-light);
    border-left: 2px solid var(--border);
    margin-bottom: 2px;
    transition: all 0.3s;
}

.sidebar a:hover, .sidebar a.active {
    color: var(--gold);
    border-left-color: var(--gold);
    background: var(--bg-light);
}

/* Footer */
.site-footer {
    background: var(--primary);
    color: #aaa;
    padding: 60px 20px 30px;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.footer-col h4 {
    color: #fff;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 15px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.footer-col a {
    display: block;
    color: #888;
    font-size: 0.9rem;
    margin-bottom: 8px;
    transition: color 0.3s;
}

.footer-col a:hover { color: var(--gold); }

.footer-bottom {
    max-width: var(--max-width);
    margin: 40px auto 0;
    padding-top: 20px;
    border-top: 1px solid #333;
    text-align: center;
    font-size: 0.8rem;
    color: #666;
}

/* Responsive */
@media (max-width: 768px) {
    .header-inner { height: 60px; }
    .main-nav { display: none; }
    .mobile-menu-btn { display: block; }
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }
    .author-inner { grid-template-columns: 1fr; }
    .author-photo-placeholder { width: 200px; height: 250px; margin: 0 auto; }
    .book-detail-inner { grid-template-columns: 1fr; text-align: center; }
    .book-detail-cover { margin: 0 auto; }
    .buy-buttons { justify-content: center; }
    .content-with-sidebar { grid-template-columns: 1fr; }
    .sidebar { position: static; }
    .blog-grid { grid-template-columns: 1fr; }
    .books-grid { grid-template-columns: 1fr; }
    .page-hero h1 { font-size: 1.8rem; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.5rem; }
    .book-cover { height: 260px; }
    .book-cover-inner { width: 140px; height: 200px; }
}

/* Real Book Cover Images */
.book-cover-img {
    width: 180px;
    height: 260px;
    object-fit: cover;
    border-radius: 4px;
    box-shadow: 5px 5px 20px rgba(0,0,0,0.3);
    transition: transform 0.3s;
}

.book-cover-img:hover {
    transform: scale(1.03);
}

.book-detail-cover-img {
    width: 220px;
    height: auto;
    max-height: 350px;
    object-fit: cover;
    display: block;
}

@media (max-width: 768px) {
    .book-detail-cover-img {
        margin: 0 auto;
        width: 180px;
    }
}

@media (max-width: 480px) {
    .book-cover-img {
        width: 140px;
        height: 200px;
    }
}