/* =============================================
   MangaReader - Main Stylesheet
   Modern Dark Theme with Glassmorphism
   ============================================= */

/* CSS Variables */
:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: rgba(26, 26, 37, 0.8);
    --bg-glass: rgba(26, 26, 37, 0.6);
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6a6a7a;
    
    --accent-primary: #8b5cf6;
    --accent-secondary: #6366f1;
    --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(139, 92, 246, 0.3);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Layout */
    --header-height: 70px;
    --container-max: 1400px;
    --sidebar-width: 280px;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

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

/* =============================================
   Header Styles
   ============================================= */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    height: var(--header-height);
    gap: var(--spacing-xl);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

/* Dropdown */
.nav-dropdown {
    position: relative;
}

.dropdown-toggle::after {
    content: '▼';
    font-size: 0.6em;
    margin-left: var(--spacing-xs);
    opacity: 0.6;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
    z-index: 100;
}

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

.dropdown-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.dropdown-menu a:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.dropdown-menu hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-sm) 0;
}

.genres-dropdown {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    width: 320px;
}

.genres-dropdown .see-all {
    grid-column: 1 / -1;
    color: var(--accent-primary);
    font-weight: 500;
    margin-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-md);
}

/* Search */
.header-search {
    flex: 1;
    max-width: 400px;
    position: relative;
}

.search-form {
    display: flex;
    align-items: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.search-form:focus-within {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.search-form input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    outline: none;
}

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

.search-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.search-btn:hover {
    color: var(--accent-primary);
}

.search-results {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    display: none;
}

.search-results.active {
    display: block;
}

.search-result-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-fast);
}

.search-result-item:hover {
    background: var(--bg-tertiary);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-cover {
    width: 50px;
    height: 70px;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

.search-result-info h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.search-result-info p {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* User Menu */
.user-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-dropdown {
    position: relative;
}

.user-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

.user-btn:hover {
    background: var(--bg-tertiary);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--accent-primary);
}

.user-name {
    font-weight: 500;
    color: var(--text-secondary);
}

.user-dropdown .dropdown-menu {
    right: 0;
    left: auto;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    z-index: 999;
    overflow-y: auto;
}

.mobile-menu.active {
    display: block;
}

.mobile-nav a {
    display: block;
    padding: var(--spacing-md);
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-md) 0;
}

/* =============================================
   Buttons
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-sm);
}

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

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

.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
}

/* =============================================
   Main Content
   ============================================= */
.main-content {
    padding-top: calc(var(--header-height) + var(--spacing-xl));
    min-height: calc(100vh - var(--header-height));
}

/* Section Headers */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.section-title::before {
    content: '';
    display: block;
    width: 4px;
    height: 24px;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
}

.section-link {
    color: var(--accent-primary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.section-link:hover {
    text-decoration: underline;
}

/* =============================================
   Manga Cards
   ============================================= */
.manga-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-lg);
}

.manga-card {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
}

.manga-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.manga-card-cover {
    position: relative;
    aspect-ratio: 2/3;
    overflow: hidden;
}

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

.manga-card:hover .manga-card-cover img {
    transform: scale(1.05);
}

.manga-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

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

.manga-card-badges {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-xs);
}

.badge {
    padding: 2px 8px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.badge-hot {
    background: linear-gradient(135deg, #ef4444, #f97316);
    color: white;
}

.badge-new {
    background: linear-gradient(135deg, #10b981, #14b8a6);
    color: white;
}

.badge-type {
    background: var(--bg-glass);
    color: var(--text-secondary);
    backdrop-filter: blur(10px);
}

.manga-card-info {
    padding: var(--spacing-md);
}

.manga-card-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.manga-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.manga-card-chapter {
    color: var(--accent-primary);
    font-weight: 500;
}

/* =============================================
   Hero Section
   ============================================= */
.hero-section {
    position: relative;
    padding: var(--spacing-2xl) 0;
    overflow: hidden;
}

.hero-carousel {
    position: relative;
}

.hero-slide {
    display: none;
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    min-height: 400px;
    background: var(--bg-secondary);
}

.hero-slide.active {
    display: flex;
}

.hero-slide-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    filter: blur(20px);
    opacity: 0.3;
    transform: scale(1.1);
}

.hero-slide-content {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
    padding: var(--spacing-2xl);
    z-index: 1;
}

.hero-slide-cover {
    flex-shrink: 0;
    width: 200px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.hero-slide-cover img {
    width: 100%;
    aspect-ratio: 2/3;
    object-fit: cover;
}

.hero-slide-info {
    flex: 1;
}

.hero-slide-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-slide-genres {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.hero-slide-genres span {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-glass);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.hero-slide-synopsis {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.hero-slide-actions {
    display: flex;
    gap: var(--spacing-md);
}

.hero-nav {
    position: absolute;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 10;
}

.hero-nav-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    backdrop-filter: blur(10px);
    transition: all var(--transition-fast);
}

.hero-nav-btn:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

.hero-dots {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 10;
}

.hero-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: all var(--transition-fast);
}

.hero-dot.active {
    width: 24px;
    border-radius: var(--radius-full);
    background: var(--accent-primary);
}

/* =============================================
   Latest Updates Section
   ============================================= */
.updates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.update-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.update-card:hover {
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.update-card-cover {
    flex-shrink: 0;
    width: 70px;
    height: 100px;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.update-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.update-card-info {
    flex: 1;
    min-width: 0;
}

.update-card-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.update-card-chapters {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.update-chapter {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
}

.update-chapter-num {
    color: var(--accent-primary);
    font-weight: 500;
}

.update-chapter-time {
    color: var(--text-muted);
}

/* =============================================
   Footer Styles
   ============================================= */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-2xl) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-2xl);
}

.footer-title {
    font-size: var(--font-size-xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--accent-primary);
    color: white;
}

.footer-heading {
    font-size: var(--font-size-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* =============================================
   Alerts
   ============================================= */
.alert {
    padding: var(--spacing-md) 0;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

/* =============================================
   Pagination
   ============================================= */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-2xl);
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.page-link:hover,
.page-link.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

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

/* =============================================
   Responsive Styles
   ============================================= */
@media (max-width: 1024px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-slide-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-slide-cover {
        width: 150px;
    }
    
    .hero-slide-genres {
        justify-content: center;
    }
    
    .hero-slide-actions {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }
    
    .header-search {
        display: none;
    }
    
    .user-menu .btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    .manga-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: var(--spacing-md);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .updates-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-slide {
        min-height: 300px;
    }
    
    .hero-slide-title {
        font-size: var(--font-size-xl);
    }
}

/* =============================================
   Utilities
   ============================================= */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* Lazy Load */
.lazy {
    opacity: 0;
    transition: opacity var(--transition-base);
}

.lazy.loaded {
    opacity: 1;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-card) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}