/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.logo-text h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
}

.logo-text p {
    font-size: 1rem;
    opacity: 0.9;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.language-switch {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255,255,255,0.1);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    backdrop-filter: blur(10px);
}

.lang-btn {
    background: none;
    border: none;
    color: white;
    font-weight: 600;
    cursor: pointer;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.lang-btn.active {
    background: rgba(255,255,255,0.2);
}

.lang-btn:hover {
    background: rgba(255,255,255,0.15);
}

/* Navigation */
.nav {
    background: white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
    padding: 1rem 0;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-list a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.nav-list a:hover {
    background: #3498db;
    color: white;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    background: #e74c3c;
    color: white;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.cta-button:hover {
    background: #c0392b;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
}

/* Featured Books Section */
.featured-books {
    padding: 4rem 0;
    background: white;
}

.featured-books h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

/* Author Section */
.author-section {
    padding: 4rem 0;
    background: #f8f9fa;
}

.author-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: center;
}

.author-image img {
    width: 100%;
    max-width: 300px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.author-text h2 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.author-text h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #3498db;
}

.author-text p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.author-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.author-links a {
    background: #3498db;
    color: white;
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.author-links a:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

/* Genres Section */
.genres-section {
    padding: 4rem 0;
    background: white;
}

.genres-section h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.genres-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.genre-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.genre-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    border-color: #3498db;
}

.genre-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.genre-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.genre-card p {
    color: #666;
    line-height: 1.6;
}

/* Books Section */
.books-section {
    padding: 4rem 0;
    background: #f8f9fa;
}

.books-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.books-header h2 {
    font-size: 2.2rem;
    color: #2c3e50;
}

.books-controls {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.search-box input {
    padding: 0.8rem 1.2rem;
    border: 2px solid #ddd;
    border-radius: 25px;
    font-size: 1rem;
    width: 250px;
    transition: all 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 10px rgba(52, 152, 219, 0.2);
}

.filter-dropdown select {
    padding: 0.8rem 1.2rem;
    border: 2px solid #ddd;
    border-radius: 25px;
    font-size: 1rem;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-dropdown select:focus {
    outline: none;
    border-color: #3498db;
}

/* Books Grid */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.book-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.book-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    border-color: #3498db;
}

.book-image {
    position: relative;
    overflow: hidden;
}

.book-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.book-content {
    padding: 1.5rem;
}

.book-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #2c3e50;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.book-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.book-link {
    display: inline-block;
    padding: 0.5rem 1rem;
    text-decoration: none;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
    min-width: 80px;
}

.book-link.amazon-de {
    background: #ff9500;
    color: white;
}

.book-link.amazon-com {
    background: #232f3e;
    color: white;
}

.book-link.apple-books {
    background: #007aff;
    color: white;
}

.book-link.books2read {
    background: #28a745;
    color: white;
}

.book-link.audiobook {
    background: #6f42c1;
    color: white;
}

.book-link:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: #3498db;
}

.footer-section p,
.footer-section a {
    color: #bdc3c7;
    text-decoration: none;
    margin-bottom: 0.5rem;
    display: block;
}

.footer-section a:hover {
    color: #3498db;
}

.footer-links,
.social-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-legal {
    display: flex;
    gap: 1rem;
}

.footer-legal a {
    color: #bdc3c7;
    text-decoration: none;
}

.footer-legal a:hover {
    color: #3498db;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .logo-text h1 {
        font-size: 1.5rem;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .author-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .books-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .books-controls {
        justify-content: center;
    }
    
    .search-box input {
        width: 100%;
        max-width: 300px;
    }
    
    .nav-list {
        gap: 1rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 2rem 0;
    }
    
    .hero-content h2 {
        font-size: 1.5rem;
    }
    
    .books-grid {
        grid-template-columns: 1fr;
    }
    
    .genres-grid {
        grid-template-columns: 1fr;
    }
    
    .book-links {
        flex-direction: column;
    }
    
    .book-link {
        text-align: center;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading Animation */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
}

.loading::after {
    content: '';
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Fade In Animation */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hidden class for filtering */
.hidden {
    display: none !important;
}