/* /css/style.css */
:root {
    --primary-color: #6c5ce7;
    --secondary-color: #a29bfe;
    --accent-color: #fd79a8;
    --dark-bg: #1a1a2e;
    --darker-bg: #16213e;
    --darkest-bg: #0f0f23;
    --text-primary: #ffffff;
    --text-secondary: #b2bec3;
    --text-muted: #74b9ff;
    --border-color: #2d3748;
    --success-color: #00b894;
    --warning-color: #fdcb6e;
    --error-color: #e84393;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 8px 25px rgba(0, 0, 0, 0.15);
    --shadow-heavy: 0 15px 35px rgba(0, 0, 0, 0.2);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

.header {
    background: var(--darker-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(20px);
}

.header-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0.1;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    position: relative;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo a {
    font-size: 28px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.tagline {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle,
.user-menu {
    position: relative;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: var(--transition);
}

.theme-toggle:hover,
.user-menu:hover {
    background: rgba(255, 255, 255, 0.1);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--darker-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 8px 0;
    min-width: 120px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    box-shadow: var(--shadow-medium);
}

.user-menu:hover .user-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-dropdown a {
    display: block;
    padding: 8px 16px;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.user-dropdown a:hover {
    background: rgba(255, 255, 255, 0.1);
}

.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-top: 1px solid var(--border-color);
    position: relative;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -17px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.search-container {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    padding: 4px;
    backdrop-filter: blur(10px);
}

.search-input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    padding: 12px 16px;
    width: 280px;
    font-size: 14px;
}

.search-input::placeholder {
    color: var(--text-secondary);
}

.search-button {
    background: var(--gradient-primary);
    border: none;
    color: white;
    padding: 12px 16px;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 16px;
}

.search-button:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-light);
}

.main-content {
    flex: 1;
    padding: 32px 0;
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 32px;
    font-size: 14px;
}

.breadcrumb-nav a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb-nav a:hover {
    color: var(--primary-color);
}

.separator {
    color: var(--text-secondary);
}

.current {
    color: var(--text-primary);
    font-weight: 500;
}

.book-showcase {
    background: var(--darker-bg);
    border-radius: var(--border-radius);
    padding: 40px;
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
}

.book-showcase::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-secondary);
    opacity: 0.05;
    z-index: 0;
}

.book-hero {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 40px;
    position: relative;
    z-index: 1;
}

.book-cover-container {
    position: relative;
}

.cover-frame {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-heavy);
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition);
}

.cover-frame:hover {
    transform: perspective(1000px) rotateY(0deg) scale(1.02);
}

.book-cover {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
}

.cover-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(108, 92, 231, 0.2), rgba(253, 121, 168, 0.2));
    opacity: 0;
    transition: var(--transition);
}

.cover-frame:hover .cover-overlay {
    opacity: 1;
}

.rating-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 8px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.rating-score {
    font-size: 18px;
    font-weight: bold;
    display: block;
}

.rating-stars {
    font-size: 12px;
    color: #ffd700;
}

.book-info-panel {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.book-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

.book-title {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 8px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.book-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 500;
}

.book-metadata {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.meta-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.meta-label {
    color: var(--text-secondary);
    font-weight: 500;
    min-width: 60px;
}

.meta-value {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.meta-value:hover {
    color: var(--primary-color);
}

.status-ongoing {
    color: var(--success-color);
    font-weight: 600;
}

.book-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tag-hot {
    background: var(--gradient-secondary);
    color: white;
}

.tag-new {
    background: var(--gradient-accent);
    color: white;
}

.tag-complete {
    background: var(--gradient-primary);
    color: white;
}

.book-description {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.book-description p {
    line-height: 1.8;
    color: var(--text-secondary);
}

.action-panel {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.action-btn {
    padding: 12px 24px;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
}

.action-btn.primary {
    background: var(--gradient-primary);
    color: white;
}

.action-btn.secondary {
    background: var(--gradient-secondary);
    color: white;
}

.action-btn.outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.action-btn.share {
    background: var(--gradient-accent);
    color: white;
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.chapter-section {
    background: var(--darker-bg);
    border-radius: var(--border-radius);
    padding: 32px;
    margin-bottom: 40px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
}

.section-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.chapter-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

.chapter-sort {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
}

.view-toggle {
    display: flex;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    overflow: hidden;
}

.view-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 8px 16px;
    cursor: pointer;
    transition: var(--transition);
}

.view-btn.active,
.view-btn:hover {
    background: var(--primary-color);
    color: white;
}

.chapter-container {
    display: grid;
    gap: 16px;
}

.chapter-container.grid-view {
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
}

.chapter-container.list-view {
    grid-template-columns: 1fr;
}

.chapter-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid transparent;
}

.chapter-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.chapter-link {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    text-decoration: none;
    color: inherit;
}

.chapter-number {
    background: var(--gradient-primary);
    color: white;
    width: 48px;
    height: 48px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 14px;
    flex-shrink: 0;
}

.chapter-content {
    flex: 1;
}

.chapter-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.chapter-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chapter-date {
    font-size: 12px;
    color: var(--text-secondary);
}

.chapter-status {
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 10px;
    font-weight: bold;
    text-transform: uppercase;
}

.chapter-status.new {
    background: var(--success-color);
    color: white;
}

.chapter-status.hot {
    background: var(--error-color);
    color: white;
}

.chapter-status.latest {
    background: var(--warning-color);
    color: var(--dark-bg);
}

.load-more-section {
    text-align: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.load-more-btn {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 12px 32px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 16px;
}

.load-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.chapter-stats {
    color: var(--text-secondary);
    font-size: 14px;
}

.recommendation-section {
    background: var(--darker-bg);
    border-radius: var(--border-radius);
    padding: 32px;
}

.recommendation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.book-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid transparent;
}

.book-card:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

.card-cover {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.card-cover:hover .card-overlay {
    opacity: 1;
}

.card-cover:hover img {
    transform: scale(1.1);
}

.quick-read {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.quick-read:hover {
    transform: scale(1.05);
}

.card-info {
    padding: 20px;
}

.card-title {
    margin-bottom: 8px;
}

.card-title a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition);
}

.card-title a:hover {
    color: var(--primary-color);
}

.card-author {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 8px;
}

.card-desc {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 12px;
}

.card-stats {
    display: flex;
    gap: 16px;
}

.stat-item {
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.footer {
    background: var(--darkest-bg);
    position: relative;
    overflow: hidden;
}

.footer-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0.05;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    padding: 48px 0 32px;
    position: relative;
    z-index: 1;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-title {
    font-size: 24px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-desc {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding: 24px 0;
    text-align: center;
    position: relative;
    z-index: 1;
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 4px;
}

.floating-tools {
    position: fixed;
    right: 24px;
    bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 1000;
}

.tool-btn {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    box-shadow: var(--shadow-medium);
}

.tool-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-heavy);
}

@media (max-width: 1024px) {
    .container {
        padding: 0 16px;
    }
    
    .book-hero {
        grid-template-columns: 1fr;
        gap: 24px;
        text-align: center;
    }
    
    .cover-frame {
        max-width: 250px;
        margin: 0 auto;
        transform: none;
    }
    
    .book-metadata {
        grid-template-columns: 1fr;
    }
    
    .chapter-container.grid-view {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .header-top {
        flex-direction: column;
        gap: 16px;
    }
    
    .main-nav {
        flex-direction: column;
        gap: 16px;
    }
    
    .nav-list {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
    
    .search-input {
        width: 200px;
    }
    
    .book-showcase {
        padding: 24px;
    }
    
    .book-title {
        font-size: 24px;
    }
    
    .action-panel {
        justify-content: center;
    }
    
    .section-header {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .chapter-container.grid-view {
        grid-template-columns: 1fr;
    }
    
    .recommendation-grid {
        grid-template-columns: 1fr;
    }
    
    .floating-tools {
        right: 16px;
        bottom: 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }
    
    .book-showcase {
        padding: 16px;
    }
    
    .chapter-section,
    .recommendation-section {
        padding: 20px;
    }
    
    .nav-list {
        gap: 12px;
    }
    
    .search-input {
        width: 150px;
    }
    
    .action-btn {
        min-width: 100px;
        padding: 10px 16px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 32px 0 24px;
    }
}