:root {
    --black: #121212;
    --dark-black: #0a0a0a;
    --white: #f5f5f5;
    --gold: #D4AF37;
    --light-gold: #f0e6c5;
    --dark-gold: #b38f2b;
    --gray: #888;
    --light-gray: #e0e0e0;
    --red: #e74c3c;
}

/* Base Styles */
body {
    font-family: 'Cormorant Garamond', serif;
    background-color: var(--black);
    color: var(--white);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* Navigation */
.navbar {
    background: var(--dark-black);
    padding: 1rem 2rem;
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
}

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

.nav-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 2px;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--gold);
}

.nav-link.active {
    color: var(--gold);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Main Content */
.main-container {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.page-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--gold);
}

/* Filter Bar */
.filter-bar {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.search-container {
    flex: 1;
    min-width: 300px;
}

.search-box {
    display: flex;
    background: var(--dark-black);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 4px;
    overflow: hidden;
}

.search-box input {
    flex: 1;
    padding: 0.8rem;
    border: none;
    background: transparent;
    color: var(--white);
    font-family: inherit;
}

.search-box input:focus {
    outline: none;
    border-color: var(--gold);
}

.search-btn {
    padding: 0 1rem;
    background: transparent;
    border: none;
    color: var(--gray);
    cursor: pointer;
}

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

.filter-options {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
}

.filter-label {
    font-size: 0.8rem;
    color: var(--light-gold);
    margin-bottom: 0.3rem;
}

.filter-select {
    padding: 0.8rem;
    background: var(--dark-black);
    border: 1px solid rgba(212, 175, 55, 0.3);
    color: var(--white);
    border-radius: 4px;
    min-width: 200px;
    cursor: pointer;
}

.filter-select:focus {
    outline: none;
    border-color: var(--gold);
}

/* Book Counter */
.book-counter {
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--light-gold);
}

.book-counter span {
    color: var(--gold);
    font-weight: bold;
}

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

.book-card {
    background: var(--dark-black);
    border: 1px solid rgba(212, 175, 55, 0.1);
    border-radius: 8px;
    transition: all 0.3s ease;
    overflow: hidden;
}

.book-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.1);
    border-color: var(--gold);
}

.book-cover-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.book-cover {
    height: 350px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.book-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    padding: 1.5rem;
}

.book-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--white);
}

.book-author {
    color: var(--light-gold);
    font-style: italic;
}

.book-meta {
    padding: 1.5rem;
}

.book-genre {
    display: inline-block;
    background: rgba(212, 175, 55, 0.2);
    color: var(--gold);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    margin-bottom: 1rem;
}

.book-description {
    color: var(--light-gray);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--gold);
    text-decoration: none;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 4px;
    font-size: 0.8rem;
}

.action-btn:hover {
    background: var(--gold);
    color: var(--black);
}

/* PDF links special style */
.action-btn .fa-file-pdf {
    color: var(--red);
}

/* No Results */
.no-results {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 4rem 0;
    text-align: center;
}

.no-results i {
    font-size: 3rem;
    color: var(--gold);
}

.no-results h3 {
    font-size: 1.5rem;
    color: var(--light-gold);
}

.no-results p {
    color: var(--gray);
}

/* Footer */
.footer {
    background: var(--dark-black);
    padding: 2rem;
    margin-top: 3rem;
    border-top: 1px solid rgba(212, 175, 55, 0.1);
    text-align: center;
}

.footer-logo {
    font-size: 1.5rem;
    color: var(--gold);
    margin-bottom: 1rem;
}

.copyright {
    color: var(--gray);
    font-size: 0.8rem;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .filter-bar {
        flex-direction: column;
    }
    
    .filter-options {
        width: 100%;
    }
    
    .filter-select {
        width: 100%;
    }
}