/* ==========================================================================
   Public OPAC Styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   Public Layout
   -------------------------------------------------------------------------- */

.public-body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--color-bg-secondary);
}

.public-main {
    flex: 1;
    padding: var(--space-6) 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* --------------------------------------------------------------------------
   Public Header
   -------------------------------------------------------------------------- */

.public-header {
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-3) var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.header-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-text-primary);
}

.header-brand:hover {
    color: var(--color-accent);
}

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

.header-nav {
    display: flex;
    gap: var(--space-4);
}

.header-nav .nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.header-search {
    flex: 1;
    max-width: 400px;
}

.header-search .search-form {
    display: flex;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.header-search .search-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
}

.header-search .search-btn {
    background: transparent;
    border: none;
    padding: var(--space-2) var(--space-3);
    cursor: pointer;
    color: var(--color-text-secondary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

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

.btn-outline:hover {
    background: var(--color-bg-secondary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: var(--text-xl);
    cursor: pointer;
    color: var(--color-text-primary);
}

@media (max-width: 768px) {
    .header-nav,
    .header-search,
    .header-actions {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
        margin-left: auto;
    }
}

/* --------------------------------------------------------------------------
   Mobile Navigation
   -------------------------------------------------------------------------- */

.mobile-nav {
    display: none;
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4);
}

.mobile-nav.open {
    display: block;
}

.mobile-nav-link {
    display: block;
    padding: var(--space-3);
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
}

.mobile-nav-link:hover {
    background: var(--color-bg-secondary);
}

@media (min-width: 769px) {
    .mobile-nav {
        display: none !important;
    }
}

/* --------------------------------------------------------------------------
   Public Footer
   -------------------------------------------------------------------------- */

.public-footer {
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
    padding: var(--space-6) 0;
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-secondary);
}

.footer-links {
    display: flex;
    gap: var(--space-4);
}

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

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

.footer-copyright {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

@media (max-width: 640px) {
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
}

/* --------------------------------------------------------------------------
   Catalog Home
   -------------------------------------------------------------------------- */

.catalog-hero {
    background: linear-gradient(135deg, var(--color-accent) 0%, #6366f1 100%);
    color: white;
    padding: var(--space-8) var(--space-4);
    text-align: center;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-6);
}

.catalog-hero h1 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-3);
}

.catalog-hero p {
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--space-5);
}

.hero-search {
    max-width: 500px;
    margin: 0 auto;
}

.hero-search .search-form {
    display: flex;
    background: white;
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.hero-search .search-input {
    flex: 1;
    border: none;
    padding: var(--space-4) var(--space-5);
    font-size: var(--text-base);
    color: var(--color-text-primary);
}

.hero-search .search-btn {
    background: var(--color-accent);
    border: none;
    padding: var(--space-4) var(--space-5);
    color: white;
    cursor: pointer;
    font-size: var(--text-lg);
}

/* --------------------------------------------------------------------------
   Book Grid
   -------------------------------------------------------------------------- */

.book-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-5);
}

.book-card {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.book-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.book-card-cover {
    aspect-ratio: 2 / 3;
    background: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--color-text-muted);
}

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

.book-card-body {
    padding: var(--space-4);
}

.book-card-title {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.book-card-author {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}

.book-card-availability {
    font-size: var(--text-sm);
}

/* --------------------------------------------------------------------------
   Book Detail
   -------------------------------------------------------------------------- */

.book-detail {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--space-6);
}

@media (max-width: 768px) {
    .book-detail {
        grid-template-columns: 1fr;
    }
}

.book-cover-large {
    aspect-ratio: 2 / 3;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
    color: var(--color-text-muted);
    overflow: hidden;
}

.book-cover-large img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.book-info h1 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-2);
}

.book-authors {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
}

.book-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.book-meta-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

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

.book-meta-value {
    font-weight: 500;
}

.book-description {
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-5);
}

.book-availability-box {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}

.availability-status {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.availability-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.availability-dot.available {
    background: var(--color-success);
}

.availability-dot.unavailable {
    background: var(--color-error);
}

/* --------------------------------------------------------------------------
   Patron Portal
   -------------------------------------------------------------------------- */

.account-header {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    margin-bottom: var(--space-5);
}

.account-header h1 {
    margin-bottom: var(--space-1);
}

.account-email {
    color: var(--color-text-secondary);
}

.account-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.account-stat {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    text-align: center;
}

.account-stat-value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text-primary);
}

.account-stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.account-nav {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-5);
    flex-wrap: wrap;
}

.account-nav-link {
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   Checkout/Hold Lists
   -------------------------------------------------------------------------- */

.item-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.item-card {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    display: flex;
    gap: var(--space-4);
}

.item-card-cover {
    width: 60px;
    height: 90px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

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

.item-card-title {
    font-weight: 600;
    margin-bottom: var(--space-1);
}

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

.item-card-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.item-card.overdue {
    border-left: 4px solid var(--color-error);
}

.item-card.ready {
    border-left: 4px solid var(--color-success);
}

/* --------------------------------------------------------------------------
   Author Grid
   -------------------------------------------------------------------------- */

.author-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--space-4);
}

.author-card {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    transition: transform var(--transition-fast);
}

.author-card:hover {
    transform: translateY(-2px);
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--color-accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    font-weight: 600;
    flex-shrink: 0;
}

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

.author-name {
    font-weight: 600;
    color: var(--color-text-primary);
}

.author-books-count {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   Empty States
   -------------------------------------------------------------------------- */

.empty-state {
    text-align: center;
    padding: var(--space-8);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.empty-icon {
    font-size: 4rem;
    opacity: 0.3;
    margin-bottom: var(--space-4);
}

.empty-state h3 {
    margin-bottom: var(--space-2);
    color: var(--color-text-primary);
}

.empty-state p {
    color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   Section Headers
   -------------------------------------------------------------------------- */

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: var(--text-xl);
    font-weight: 600;
}

/* --------------------------------------------------------------------------
   Filters
   -------------------------------------------------------------------------- */

.filter-bar {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin-bottom: var(--space-5);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    align-items: center;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.filter-label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}