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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: #667eea;
}

.nav-logo i {
    font-size: 2rem;
    animation: rotate 2s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.nav-search {
    display: flex;
    align-items: center;
    background: #f8f9fa;
    border-radius: 25px;
    padding: 0.5rem 1rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.nav-search:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.nav-search input {
    border: none;
    background: transparent;
    outline: none;
    padding: 0.5rem;
    font-size: 1rem;
    width: 300px;
}

.search-btn {
    background: linear-gradient(45deg, #667eea, #764ba2);
    border: none;
    color: white;
    padding: 0.5rem;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #667eea;
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: linear-gradient(45deg, #667eea, #764ba2);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.cart-btn {
    position: relative;
    padding: 0.5rem;
    border-radius: 10px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white !important;
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #ff4757;
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Hero Section */
.hero {
    padding: 120px 2rem 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 800px;
    z-index: 2;
    position: relative;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.highlight {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.hero-subtitle {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s both;
}

.cta-btn {
    background: linear-gradient(45deg, #ff6b6b, #ffa500);
    border: none;
    color: white;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(255, 107, 107, 0.3);
    animation: fadeInUp 1s ease 0.4s both;
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(255, 107, 107, 0.4);
}

.hero-books {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-book {
    position: absolute;
    width: 80px;
    height: 100px;
    border-radius: 8px;
    animation: float 6s ease-in-out infinite;
}

.book-1 {
    background: linear-gradient(45deg, #ff6b6b, #ff8e8e);
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.book-2 {
    background: linear-gradient(45deg, #4ecdc4, #44a08d);
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.book-3 {
    background: linear-gradient(45deg, #45b7d1, #96c93d);
    top: 30%;
    right: 30%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Categories Section */
.categories {
    padding: 80px 2rem;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #333;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 4px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.category-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.category-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s ease;
}

.category-card:hover::before {
    left: 100%;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.category-card i {
    font-size: 3rem;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.category-card:hover i {
    transform: scale(1.2) rotate(5deg);
}

.category-card.fiction i { color: #ff6b6b; }
.category-card.non-fiction i { color: #4ecdc4; }
.category-card.mystery i { color: #45b7d1; }
.category-card.romance i { color: #ff8e8e; }
.category-card.sci-fi i { color: #96c93d; }
.category-card.self-help i { color: #ffd700; }

.category-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

.category-card p {
    color: #666;
    font-size: 0.9rem;
}

/* Featured Books Section */
.featured-books {
    padding: 80px 2rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.books-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.book-card {
    background: white;
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
}

.book-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.book-card:hover::before {
    opacity: 1;
}

.book-card:hover {
    transform: translateY(-15px) rotateX(5deg);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

.book-cover {
    width: 100%;
    height: 250px;
    border-radius: 15px;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.book-cover::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
}

.book-card:hover .book-cover::after {
    left: 100%;
}

.book-info h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

.book-info .author {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.book-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.stars {
    color: #ffd700;
}

.rating-text {
    color: #666;
    font-size: 0.9rem;
}

.book-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 1rem;
}

.add-to-cart {
    width: 100%;
    background: linear-gradient(45deg, #667eea, #764ba2);
    border: none;
    color: white;
    padding: 0.8rem;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.add-to-cart::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.add-to-cart:hover::before {
    left: 100%;
}

.add-to-cart:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 3rem;
}

.page-btn {
    background: linear-gradient(45deg, #667eea, #764ba2);
    border: none;
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.page-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.page-btn:hover::before {
    left: 100%;
}

.page-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.4);
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.page-btn:disabled:hover {
    transform: none;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.page-numbers {
    display: flex;
    gap: 0.5rem;
}

.page-number {
    width: 40px;
    height: 40px;
    border: 2px solid #667eea;
    background: white;
    color: #667eea;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.page-number:hover,
.page-number.active {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

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

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #667eea;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #667eea;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* Product Detail Page Styles */
.product-detail {
    padding: 120px 2rem 80px;
    background: white;
    min-height: 100vh;
}

.product-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.product-image {
    position: relative;
}

.product-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.product-image:hover img {
    transform: scale(1.02);
}

.product-info {
    padding: 2rem 0;
}

.product-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 1rem;
}

.product-author {
    font-size: 1.2rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.product-price {
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 2rem;
}

.product-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 2rem;
}

.product-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn-primary {
    background: linear-gradient(45deg, #667eea, #764ba2);
    border: none;
    color: white;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: white;
    border: 2px solid #667eea;
    color: #667eea;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-3px);
}

.suggestions {
    margin-top: 4rem;
}

.suggestions h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: #333;
}

.suggestions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.suggestion-card {
    background: white;
    border-radius: 15px;
    padding: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.suggestion-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.suggestion-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 1rem;
}

.suggestion-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

.suggestion-card .price {
    font-size: 1.1rem;
    font-weight: 700;
    color: #667eea;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-search input {
        width: 250px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .category-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .books-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .product-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .books-grid {
        grid-template-columns: 1fr;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
}

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

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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