/* ========================================
   book-epub.com - Modern CSS Design System
   ======================================== */

/* CSS Variables */
:root {
    /* Colors - Dark Modern Theme */
    --color-bg: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-surface: rgba(255, 255, 255, 0.05);
    --color-border: rgba(255, 255, 255, 0.1);
    --color-text: #f8fafc;
    --color-text-muted: #94a3b8;
    --color-primary: #38bdf8;
    --color-primary-hover: #0ea5e9;
    --color-accent: #818cf8;
    --color-gradient: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);

    /* Typography */
    --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    --font-size-4xl: 3.5rem;
    --line-height: 1.6;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Layout */
    --container-max: 1200px;
    --container-narrow: 800px;
    --radius: 12px;
    --radius-lg: 20px;

    /* Transitions */
    --transition: all 0.3s ease;
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

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

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

ul,
ol {
    list-style: none;
}

/* SVG Icons */
.icon {
    width: 1em;
    height: 1em;
    display: inline-block;
    vertical-align: -0.125em;
    flex-shrink: 0;
}

.icon-sm {
    width: 0.875em;
    height: 0.875em;
}

.icon-lg {
    width: 1.5em;
    height: 1.5em;
}

.icon-xl {
    width: 2em;
    height: 2em;
}

.icon-star {
    color: #fbbf24;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

h1 {
    font-size: var(--font-size-4xl);
}

h2 {
    font-size: var(--font-size-2xl);
}

h3 {
    font-size: var(--font-size-xl);
}

p {
    margin-bottom: var(--space-md);
    color: var(--color-text-muted);
}

.lead {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
}

/* Layout */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-narrow {
    max-width: var(--container-narrow);
}

.section {
    padding: var(--space-3xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-2xl);
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Grid */
.grid {
    display: grid;
    gap: var(--space-xl);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md) 0;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    flex-wrap: nowrap;
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
    letter-spacing: -0.5px;
    white-space: nowrap;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-list {
    display: flex;
    gap: var(--space-md);
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-list>li {
    position: relative;
}

.nav-list a {
    color: var(--color-text-muted);
    font-weight: 500;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius);
    transition: var(--transition);
    display: block;
}

.nav-list a:hover {
    color: var(--color-text);
    background: var(--color-surface);
}

/* Dropdown Menu */
.nav-item-dropdown:hover .dropdown-menu {
    display: block;
    animation: fadeIn 0.2s ease;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    min-width: 400px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    z-index: 200;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}
}

.dropdown-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}

.dropdown-menu h4 {
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--space-xs);
}

.dropdown-menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.dropdown-menu li {
    margin-bottom: var(--space-xs);
}

.dropdown-menu a {
    padding: 4px 0;
    font-size: var(--font-size-sm);
}

.dropdown-menu a:hover {
    background: none;
    color: var(--color-primary);
    transform: translateX(4px);
}

/* Header Search */
.header-search {
    position: relative;
}

.header-search form {
    display: flex;
    align-items: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    /* Pill shape */
    padding: 4px 16px;
    width: 250px;
    transition: var(--transition);
}

.header-search form:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
    width: 300px;
}

.header-search input {
    background: none;
    border: none;
    color: var(--color-text);
    padding: 8px 0;
    flex: 1;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    outline: none;
}

.header-search button {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0;
    margin-left: 8px;
    transition: var(--transition);
}

.header-search button:hover {
    color: var(--color-primary);
    transform: scale(1.1);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    padding: var(--space-sm);
    z-index: 201;
}

.mobile-menu-btn .bar {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: 0.3s;
}

/* Responsive Styles */
@media (max-width: 900px) {
    .mobile-menu-btn {
        display: flex;
    }

    .nav-wrapper {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--color-bg-secondary);
        flex-direction: column;
        padding: 80px 20px 20px;
        transition: 0.3s ease;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
        align-items: stretch;
        gap: var(--space-lg);
    }

    .nav-wrapper.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }

    .nav-list>li {
        width: 100%;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(255, 255, 255, 0.03);
        min-width: 0;
        padding: var(--space-md);
        display: none;
        /* JS toggle needed for submenus usually, or CSS hack */
    }

    .nav-item-dropdown:hover .dropdown-menu {
        display: block;
        /* Create simple hover effect for mobile for now */
    }

    .dropdown-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .header-search form {
        width: 100%;
    }

    .header-search form:focus-within {
        width: 100%;
    }
}

/* Hero Section */
.hero {
    padding: var(--space-3xl) 0;
    text-align: center;
    background: radial-gradient(ellipse at top, var(--color-bg-secondary) 0%, var(--color-bg) 70%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.1) 0%, transparent 50%);
    animation: pulse 10s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.5;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.3;
    }
}

.hero-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-lg);
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
    position: relative;
    z-index: 1;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: var(--font-size-base);
    position: relative;
    z-index: 1;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(56, 189, 248, 0.3);
    color: var(--color-bg);
}

/* Cards */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-genre h3 {
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
}

.card-genre p {
    margin: 0;
}

/* Book Cards */
.card-book {
    position: relative;
    display: block;
}

.card-book h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
    color: var(--color-text);
    transition: var(--transition);
}

.card-book:hover h3 {
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-rating {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--color-gradient);
    color: var(--color-bg);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.card-author {
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
    font-weight: 500;
}

.card-genre,
.card-meta {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin: 0;
}

/* PDF Card with Image */
.card-pdf {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
    padding: var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    text-decoration: none;
    color: inherit;
}

.card-pdf:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.card-pdf .card-image {
    flex-shrink: 0;
}

.card-pdf .card-image img {
    width: 80px;
    height: 120px;
    object-fit: cover;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

.card-pdf .card-content {
    flex: 1;
    min-width: 0;
}

.card-pdf .card-rating {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
    position: static;
    background: none;
    padding: 0;
}

.card-pdf h3 {
    font-size: var(--font-size-base);
    margin-bottom: var(--space-xs);
    line-height: 1.4;
}

.card-pdf .card-meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

@media (max-width: 600px) {
    .card-pdf .card-image img {
        width: 60px;
        height: 90px;
    }
}

/* Book Detail Page */
.book-detail .book-header {
    margin-bottom: var(--space-2xl);
}

.book-detail h1 {
    font-size: var(--font-size-3xl);
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.book-detail .book-author {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.book-detail .book-meta {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.book-detail .book-meta span {
    background: var(--color-surface);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border);
}

.book-detail .book-meta .rating {
    background: var(--color-gradient);
    color: var(--color-bg);
    border: none;
    font-weight: 600;
}

.book-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
}

@media (min-width: 768px) {
    .book-layout {
        grid-template-columns: 2fr 1fr;
    }
}

.book-content h2 {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
}

.book-content h2:first-child {
    margin-top: 0;
}

.sidebar-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
}

.sidebar-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.info-list li {
    color: var(--color-text-muted);
}

.info-list a {
    color: var(--color-primary);
}

.related-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.related-list a {
    display: block;
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius);
    transition: var(--transition);
}

.related-list a:hover {
    background: rgba(255, 255, 255, 0.05);
}

.related-list strong {
    display: block;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.related-list span {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* Error Page */
.error-page {
    text-align: center;
    padding: var(--space-3xl) 0;
}

.error-page h1 {
    font-size: 8rem;
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0;
}

.error-page .lead {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-md);
}

.error-page p {
    margin-bottom: var(--space-xl);
}

/* Breadcrumb */
.breadcrumb {
    padding: var(--space-lg) 0;
    margin: 0 auto;
    max-width: var(--container-max);
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
}

.breadcrumb li:not(:last-child)::after {
    content: '/';
    margin-left: var(--space-sm);
    color: var(--color-text-muted);
}

.breadcrumb li[aria-current="page"] {
    color: var(--color-text-muted);
}

/* Page Header */
.page-header {
    margin-bottom: var(--space-2xl);
}

.page-header h1 {
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-3xl);
    color: var(--color-text-muted);
    grid-column: 1 / -1;
}

/* Footer */
.footer {
    margin-top: auto;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--space-2xl) 0 var(--space-lg);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
}

.footer-tagline {
    color: var(--color-text-muted);
    margin: 0;
}

.footer-nav ul {
    display: flex;
    gap: var(--space-lg);
}

.footer-nav a {
    color: var(--color-text-muted);
}

.footer-nav a:hover {
    color: var(--color-text);
}

.copyright {
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin: 0;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

/* Legal Pages */
.legal-page h1 {
    margin-bottom: var(--space-2xl);
}

.legal-page h2 {
    font-size: var(--font-size-xl);
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.legal-page ul {
    list-style: disc;
    padding-left: var(--space-xl);
    margin-bottom: var(--space-md);
}

.legal-page li {
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

/* Book Article */
.book-article {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
}

@media (min-width: 768px) {
    .book-article .container {
        display: grid;
        grid-template-columns: 2fr 1fr;
        gap: var(--space-2xl);
    }

    .book-article .page-header {
        grid-column: 1 / -1;
    }
}

.book-sidebar {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    height: fit-content;
}

.book-sidebar h2 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-md);
}

.book-sidebar ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.book-sidebar li {
    color: var(--color-text-muted);
}

/* Main */
.main {
    flex: 1;
}

/* Responsive */
@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2.5rem;
        --font-size-3xl: 2rem;
        --font-size-2xl: 1.5rem;
    }

    .nav-list {
        display: none;
        /* TODO: Add mobile menu */
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-nav ul {
        justify-content: center;
    }
}

/* ===========================================
   PDF PAGES STYLES
   =========================================== */

/* PDF Badge */
.pdf-badge {
    display: inline-block;
    background: #ef4444;
    color: white;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius);
    font-size: var(--font-size-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pdf-badge.badge-epub {
    background: #8b5cf6;
}

.pdf-badge.badge-fiction {
    background: #f59e0b;
}

.pdf-badge.badge-nonfiction {
    background: #10b981;
}

.pdf-badges {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
    margin-bottom: var(--space-sm);
}

/* Characters Grid */
.characters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-md);
}

.character-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-md);
}

.character-card h4 {
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
    font-size: var(--font-size-base);
}

.character-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin: 0;
}

/* Themes List */
.themes-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.theme-tag {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: var(--space-xs) var(--space-md);
    border-radius: 50px;
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

/* Key Points */
.key-points {
    list-style: none;
    padding: 0;
}

.key-points li {
    padding: var(--space-sm) 0;
    padding-left: var(--space-lg);
    position: relative;
    border-bottom: 1px solid var(--color-border);
}

.key-points li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

.key-points li:last-child {
    border-bottom: none;
}

/* FAQ Section */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.faq-item {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.faq-item summary {
    padding: var(--space-md);
    cursor: pointer;
    font-weight: 600;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::after {
    content: "+";
    font-size: var(--font-size-xl);
    color: var(--color-primary);
}

.faq-item[open] summary::after {
    content: "−";
}

.faq-item p {
    padding: 0 var(--space-md) var(--space-md);
    margin: 0;
    color: var(--color-text-muted);
}

/* PDF Page Header */
.pdf-header {
    margin-bottom: var(--space-2xl);
}

.pdf-header-content {
    display: flex;
    gap: var(--space-xl);
    align-items: flex-start;
}

.pdf-cover {
    flex-shrink: 0;
}

.pdf-cover img {
    width: 150px;
    height: auto;
    border-radius: var(--radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--color-border);
}

@media (max-width: 600px) {
    .pdf-header-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .pdf-cover img {
        width: 120px;
    }
}

.pdf-header-info {
    flex: 1;
}

.pdf-header h1 {
    font-size: var(--font-size-2xl);
    margin-top: var(--space-md);
    line-height: 1.3;
}

.pdf-meta {
    display: flex;
    gap: var(--space-lg);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

.pdf-meta span {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* PDF Layout */
.pdf-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
}

@media (min-width: 768px) {
    .pdf-layout {
        grid-template-columns: 2fr 1fr;
    }
}

/* Content Block */
.content-block {
    margin-bottom: var(--space-2xl);
}

.content-block h2 {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

/* Download Steps */
.download-steps {
    list-style: decimal;
    padding-left: var(--space-xl);
}

.download-steps li {
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
    padding-left: var(--space-sm);
}

/* Download CTA */
.download-cta {
    text-align: center;
    padding: var(--space-2xl);
    background: var(--color-surface);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    margin: var(--space-2xl) 0;
}

.btn-download {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-lg) var(--space-2xl);
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    color: white;
    border-radius: var(--radius-lg);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(34, 197, 94, 0.4);
    color: white;
}

.btn-download .btn-icon {
    font-size: 1.5rem;
}

.btn-download .btn-text {
    font-size: var(--font-size-lg);
}

.btn-download .btn-format {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    text-transform: none;
}

.download-note {
    margin-top: var(--space-md);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* Dual Download Buttons */
.download-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn-download-epub {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.btn-download-epub:hover {
    box-shadow: 0 15px 40px rgba(139, 92, 246, 0.4);
}

/* Info Table */
.info-table {
    width: 100%;
    border-collapse: collapse;
}

.info-table td {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

.info-table td:first-child {
    color: var(--color-text-muted);
    width: 40%;
}

.info-table td:last-child {
    color: var(--color-text);
    font-weight: 500;
}

/* Related PDFs */
.related-pdfs {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.related-pdfs a {
    display: block;
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius);
    transition: var(--transition);
}

.related-pdfs a:hover {
    background: rgba(255, 255, 255, 0.05);
}

.related-title {
    display: block;
    color: var(--color-text);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-xs);
}

.related-volume {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* Category List */
.category-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.category-list a {
    color: var(--color-text-muted);
    transition: var(--transition);
}

.category-list a:hover {
    color: var(--color-primary);
}

/* ===========================================
   DOWNLOAD GATEWAY STYLES
   =========================================== */

.download-gateway {
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.gateway-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center;
}

.gateway-header {
    margin-bottom: var(--space-2xl);
}

.gateway-header h1 {
    margin-top: var(--space-md);
    font-size: var(--font-size-2xl);
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Countdown */
.countdown-section {
    margin: var(--space-2xl) 0;
}

.progress-ring {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-lg);
}

.progress-ring svg {
    transform: rotate(-90deg);
    width: 100%;
    height: 100%;
}

.progress-ring-bg {
    fill: none;
    stroke: var(--color-border);
    stroke-width: 8;
}

.progress-ring-circle {
    fill: none;
    stroke: url(#gradient);
    stroke: var(--color-primary);
    stroke-width: 8;
    stroke-linecap: round;
    transition: stroke-dashoffset 1s linear;
}

.countdown-number {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--font-size-3xl);
    font-weight: 700;
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.countdown-text {
    color: var(--color-text-muted);
}

.gateway-actions {
    margin: var(--space-2xl) 0;
}

.gateway-info {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.gateway-info p {
    margin: 0;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.related-section {
    margin-top: var(--space-3xl);
}

.related-section h2 {
    text-align: center;
    margin-bottom: var(--space-xl);
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
}

/* ===========================================
   THEME & GENRE LINKS
   =========================================== */

.theme-tag-link {
    display: inline-block;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    color: var(--color-text);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: var(--transition);
    margin: var(--space-xs);
}

.theme-tag-link:hover {
    background: var(--color-gradient);
    color: var(--color-bg);
    border-color: transparent;
    transform: translateY(-2px);
}

.themes-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

/* Badge variants */
.badge-fiction {
    background: #10b981 !important;
}

.badge-nonfiction {
    background: #3b82f6 !important;
}

.badge-epub {
    background: #818cf8 !important;
}

/* Genre Pills */
.genre-pill {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: rgba(129, 140, 248, 0.1);
    border: 1px solid var(--color-accent);
    border-radius: 50px;
    color: var(--color-accent);
    font-size: var(--font-size-sm);
    text-decoration: none;
    transition: var(--transition);
}

.genre-pill:hover {
    background: var(--color-accent);
    color: white;
}

/* Author display in cards */
.card-author {
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    margin: var(--space-xs) 0;
}

/* Book Author in PDF pages */
.book-author {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.book-author strong {
    color: var(--color-primary);
}

.pdf-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.pdf-meta span {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* ===========================================
   UI ENHANCEMENTS (FORMS, TABLES, ADMIN)
   =========================================== */

/* Forms */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: var(--space-md);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    font-family: var(--font-family);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
}

.table th,
.table td {
    padding: var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-muted);
}

.table th {
    background: rgba(255, 255, 255, 0.03);
    color: var(--color-text);
    font-weight: 600;
    text-transform: uppercase;
    font-size: var(--font-size-sm);
    letter-spacing: 0.5px;
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
    color: var(--color-text);
}

/* Alerts */
.alert {
    padding: var(--space-md);
    border-radius: var(--radius);
    margin-bottom: var(--space-lg);
    border: 1px solid transparent;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border-color: rgba(34, 197, 94, 0.2);
    color: #4ade80;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

.alert-info {
    background: rgba(56, 189, 248, 0.1);
    border-color: rgba(56, 189, 248, 0.2);
    color: #7dd3fc;
}

/* Admin Dashboard Specifics */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.admin-header h1 {
    margin: 0;
    font-size: var(--font-size-2xl);
}

.badge-source {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-source-gemini {
    background: rgba(129, 140, 248, 0.2);
    color: #a5b4fc;
}

.badge-source-manual {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-muted);
}

/* Author Page Specifics */
.author-header {
    text-align: center;
    padding: var(--space-3xl) 0;
    background: radial-gradient(circle at center, rgba(56, 189, 248, 0.05) 0%, transparent 70%);
    margin-bottom: var(--space-2xl);
}

.author-title {
    font-size: var(--font-size-4xl);
    background: var(--color-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-md);
}

.author-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
}

.cta-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center;
    margin-top: var(--space-3xl);
}

.cta-box h3 {
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-text-muted);
    background: rgba(255, 255, 255, 0.05);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover {
    background: rgba(56, 189, 248, 0.1);
}

.btn-sm {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-sm);
}

/* Author Page Grid Fix */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--space-xl);
}

.card-book {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    height: 100%;
    border: 1px solid var(--color-border);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card-book:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: var(--color-primary);
}

.card-book .card-image {
    width: 100%;
    aspect-ratio: 2/3;
    overflow: hidden;
    background: #1e293b;
    position: relative;
    border-bottom: 1px solid var(--color-border);
}

.card-book .card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    display: block;
}

.card-book:hover .card-image img {
    transform: scale(1.05);
}

.card-book .card-content {
    padding: var(--space-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background: var(--color-surface);
}

.card-book h3 {
    font-size: 1.1rem;
    line-height: 1.4;
    margin-bottom: var(--space-xs);
    flex-grow: 1;
}

.card-book h3 a {
    color: var(--color-text);
    text-decoration: none;
}

.card-book h3 a:hover {
    color: var(--color-primary);
}