/* 
 * Islamic Digital Library - State-of-the-Art Academic Light Theme 
 * Features warm paper colors, smooth HSL gradients, glassmorphism, 
 * and custom typography (Amiri for classical text, Cairo for UI, Outfit for English).
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Naskh+Arabic:wght@400;500;600;700&family=Cairo:wght@400;500;600;700&display=swap');

:root {
    /* Color Palette - HSL (Emerald Islamic theme with warm academic ivory tones) */
    --bg-base: hsl(35, 30%, 96%);          /* Soft, warm academic book-paper background */
    --bg-card: hsl(0, 0%, 100%);           /* Crisp white for panels and cards */
    --bg-panel: hsla(0, 0%, 100%, 0.75);   /* Semi-transparent for glassmorphism */
    --bg-input: hsl(35, 20%, 93%);
    
    --primary: hsl(150, 75%, 28%);         /* Islamic Deep Jade/Emerald */
    --primary-hover: hsl(150, 80%, 22%);
    --primary-light: hsl(150, 50%, 95%);   /* Very soft green tint */
    
    --accent: hsl(38, 85%, 48%);           /* Warm Gold / Amber */
    --accent-hover: hsl(38, 90%, 40%);
    
    --text-primary: hsl(210, 24%, 16%);    /* Deep Obsidian / Navy-Slate */
    --text-secondary: hsl(210, 12%, 40%);  /* Muted grey-slate */
    --text-light: hsl(210, 8%, 60%);
    
    --border: hsla(210, 24%, 16%, 0.08);   /* Elegant, very soft borders */
    --border-hover: hsla(210, 24%, 16%, 0.16);
    --border-glow: hsla(150, 75%, 28%, 0.25);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 20px rgba(45, 55, 72, 0.06);
    --shadow-lg: 0 16px 36px rgba(45, 55, 72, 0.1);
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-ar: 'Noto Naskh Arabic', 'Traditional Arabic', serif;
    --font-serif: 'Noto Naskh Arabic', 'Traditional Arabic', serif;
    --font-en: 'Inter', 'Segoe UI', sans-serif;
    --font-ui: 'Cairo', 'Traditional Arabic', sans-serif;
}

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

body {
    direction: rtl;
    text-align: right;
    font-family: var(--font-ar);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.lang-en {
    font-family: var(--font-en);
    direction: ltr;
    text-align: left;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 24px;
    left: 24px;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 380px;
    pointer-events: none;
}

.toast {
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 14px 20px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border-right: 4px solid var(--primary);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    transform: translateY(20px);
    opacity: 0;
    animation: toastIn 0.3s forwards cubic-bezier(0.18, 0.89, 0.32, 1.28);
    pointer-events: auto;
}

.toast.toast-error {
    border-right-color: #ef4444;
}

.toast.toast-success {
    border-right-color: #10b981;
}

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

/* Navbar */
.navbar {
    background: var(--bg-panel);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 16px 0;
    transition: var(--transition);
}

.container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 24px;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 38px;
    height: 38px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2);
}

.logo-text {
    font-family: var(--font-ui);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    font-family: var(--font-ui);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition);
    cursor: pointer;
}

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

.nav-link.admin-pill {
    border: 1px solid var(--accent);
    color: var(--accent);
}

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

/* Status Bar & Setup settings link */
.status-bar {
    background: hsl(35, 100%, 98%);
    border-bottom: 1px solid var(--border);
    padding: 8px 0;
    font-size: 12px;
    color: var(--text-secondary);
}

.status-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.status-badge {
    font-family: var(--font-en);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--bg-input);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
}

.status-badge.connected {
    background: hsl(150, 50%, 90%);
    color: hsl(150, 80%, 20%);
}

.status-badge.disconnected {
    background: hsl(0, 100%, 94%);
    color: hsl(0, 80%, 30%);
}

/* Main Content Layout */
.main-wrapper {
    padding: 32px 0 64px 0;
    min-height: calc(100vh - 120px);
}

.screen {
    display: none;
}

.screen.active {
    display: block;
    animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Glassmorphism Panel Wrapper */
.panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-md);
    margin-bottom: 24px;
}

/* Buttons */
.btn {
    font-family: var(--font-ui);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text-primary);
    transition: var(--transition);
}

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

.btn-primary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.15);
}

.btn-primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-accent {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.btn-accent:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-danger {
    background: #ef4444;
    color: white;
    border-color: #ef4444;
}

.btn-danger:hover {
    background: #dc2626;
    border-color: #dc2626;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: var(--radius-sm);
}

/* Forms */
.form-group {
    margin-bottom: 18px;
}

.form-label {
    font-family: var(--font-ui);
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    transition: var(--transition);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--border-glow);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

/* Modern Auth Card */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    width: 100%;
    max-width: 440px;
}

.auth-header {
    text-align: center;
    margin-bottom: 28px;
}

.auth-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

/* Book Bar / Cover page row */
.book-bar {
    display: flex;
    overflow-x: auto;
    gap: 20px;
    padding: 10px 4px 24px 4px;
    margin-bottom: 30px;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) transparent;
}

.book-bar::-webkit-scrollbar {
    height: 6px;
}

.book-bar::-webkit-scrollbar-thumb {
    background-color: var(--primary);
    border-radius: var(--radius-full);
}

.bar-book-card {
    flex: 0 0 110px;
    cursor: pointer;
    text-align: center;
    transition: var(--transition);
}

.bar-book-card:hover {
    transform: translateY(-8px);
}

.bar-book-cover {
    width: 110px;
    height: 155px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    object-fit: cover;
    border: 1px solid var(--border);
    background: white;
}

.bar-book-title {
    font-size: 11px;
    font-weight: 600;
    margin-top: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

/* Search and Filters Layout */
.search-filter-panel {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 32px;
}

.search-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 16px;
    align-items: flex-end;
}

@media (max-width: 992px) {
    .search-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 600px) {
    .search-grid {
        grid-template-columns: 1fr;
    }
}

.search-box-wrapper {
    position: relative;
}

.search-box-wrapper input {
    padding-right: 44px;
}

.search-icon {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
}

/* Library Sidebar & Split Panel Layout */
.library-layout-wrapper {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 24px;
    align-items: start;
}

@media (max-width: 992px) {
    .library-layout-wrapper {
        grid-template-columns: 1fr;
    }
    .library-sidebar-tabs {
        flex-direction: row !important;
        overflow-x: auto;
    }
}

/* Right Sidebar vertical tabs */
.library-sidebar-tabs {
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 12px;
    box-shadow: var(--shadow-sm);
}

.sidebar-tab-item {
    font-family: var(--font-ui);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
}

.sidebar-tab-item:hover {
    background: var(--bg-input);
    color: var(--text-primary);
}

.sidebar-tab-item.active {
    background: var(--primary-light);
    color: var(--primary);
}

.tab-icon {
    font-size: 16px;
}

.tab-text {
    font-size: 14px;
}

/* Left Main View Container */
.library-main-content {
    min-width: 0; /* Prevents flex items from breaking layout */
}

.lib-tab-view {
    display: none;
    animation: fadeIn 0.3s ease forwards;
}

.lib-tab-view.active {
    display: block;
}

/* Split Column Layout for Authors and Categories */
.split-layout-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 70vh;
    box-shadow: var(--shadow-sm);
}

@media (max-width: 768px) {
    .split-layout-container {
        grid-template-columns: 1fr;
        height: auto;
    }
    .split-panel-sidebar {
        border-left: none !important;
        border-bottom: 1px solid var(--border);
        height: 250px;
    }
    .split-layout-container {
        height: auto;
    }
}

/* Right side of split layout (RTL list) */
.split-panel-sidebar {
    background: hsl(35, 100%, 99%);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.panel-search-box {
    padding: 12px;
    border-bottom: 1px solid var(--border);
}

.panel-search-box input {
    font-size: 12px;
    padding: 8px 12px;
}

.split-list-scrollable {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.split-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 4px;
    color: var(--text-primary);
}

.split-list-item:hover {
    background: var(--bg-input);
}

.split-list-item.active {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 700;
}

.split-list-item .count-badge {
    background: var(--bg-input);
    color: var(--text-secondary);
    font-size: 10px;
    padding: 1px 6px;
    border-radius: var(--radius-full);
}

.split-list-item.active .count-badge {
    background: var(--primary);
    color: white;
}

/* Left side of split layout: Books list panel */
.split-panel-main {
    display: flex;
    flex-direction: column;
    padding: 24px;
    overflow-y: auto;
}

.panel-header-desc {
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Vertical List of Horizontal Rows */
.book-row-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Full-width Book Card Row */
.book-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    width: 100%;
}

.book-card:hover {
    transform: translateX(-4px); /* RTL slide left */
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.book-card-cover-wrapper {
    flex: 0 0 55px;
}

.book-card-cover {
    width: 55px;
    height: 80px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.book-card-info {
    flex: 1;
    display: grid;
    grid-template-columns: 2fr 1.5fr 1fr;
    gap: 16px;
    align-items: center;
}

@media (max-width: 768px) {
    .book-card {
        flex-direction: column;
        align-items: flex-start;
    }
    .book-card-info {
        grid-template-columns: 1fr;
        gap: 8px;
        width: 100%;
    }
    .book-card-actions {
        width: 100%;
        justify-content: flex-end;
    }
}

.book-card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.book-card-author {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.book-card-death {
    font-size: 11px;
    color: var(--accent-hover);
    font-weight: 600;
    margin-right: 6px;
}

.book-card-meta-badges {
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-weight: 500;
    background: var(--bg-input);
    color: var(--text-secondary);
}

.badge-primary {
    background: var(--primary-light);
    color: var(--primary);
}

.badge-accent {
    background: hsl(38, 100%, 94%);
    color: var(--accent-hover);
}

.book-card-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}


/* Tabs Panel - IDE / Browser multi-tab layout */
.tabs-container {
    display: flex;
    background: var(--bg-input);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    overflow-x: auto;
    border: 1px solid var(--border);
    border-bottom: none;
}

.tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-left: 1px solid var(--border);
    cursor: pointer;
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
    white-space: nowrap;
}

.tab.active {
    background: var(--bg-card);
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
}

.tab-close {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: var(--text-light);
    transition: var(--transition);
}

.tab-close:hover {
    background: #fee2e2;
    color: #ef4444;
}

/* Inbuilt PDF Reader Panel */
.reader-workspace {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-height: 80vh;
}

.reader-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
}

.toolbar-group {
    font-family: var(--font-ui);
    display: flex;
    align-items: center;
    gap: 12px;
}

.page-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.page-nav input {
    width: 50px;
    text-align: center;
    padding: 4px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.reader-viewer-container {
    flex: 1;
    overflow: auto;
    background: hsl(35, 10%, 90%);
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    max-height: 70vh;
}

.pdf-canvas-wrapper {
    position: relative;
    box-shadow: var(--shadow-lg);
    background: white;
}

/* Text layer overlay for copy-paste/selection in reader */
.textLayer {
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    opacity: 0.2; /* Subtle overlay */
    line-height: 1.0;
}

/* Admin Dashboard Layout */
.admin-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 24px;
}

@media (max-width: 992px) {
    .admin-grid {
        grid-template-columns: 1fr;
    }
}

.admin-sidebar {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    height: fit-content;
}

.admin-menu-item {
    font-family: var(--font-ui);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
    margin-bottom: 8px;
}

.admin-menu-item:hover, .admin-menu-item.active {
    background: var(--primary-light);
    color: var(--primary);
}

/* ================= RESPONSIVE / MOBILE IMPROVEMENTS ================= */

@media (max-width: 768px) {
    /* Container: reduce padding on mobile */
    .container {
        padding: 0 12px;
    }
    .main-wrapper {
        padding: 16px 0 32px 0;
    }

    /* Navbar: stack logo and links */
    .navbar-container {
        flex-wrap: wrap;
        gap: 8px;
    }
    .navbar {
        padding: 10px 0;
    }
    .nav-links {
        width: 100%;
        overflow-x: auto;
        gap: 4px;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    .nav-link {
        font-size: 12px;
        padding: 6px 10px;
        white-space: nowrap;
    }
    .logo-text {
        font-size: 18px;
    }

    /* Status bar: stack left/right */
    .status-flex {
        flex-direction: column;
        gap: 6px;
        align-items: flex-start;
    }

    /* Reader toolbar: wrap on small screens */
    .reader-toolbar {
        flex-wrap: wrap;
        gap: 8px;
        padding: 10px 12px;
    }
    .reader-toolbar .toolbar-group {
        flex: 1 1 auto;
        min-width: 0;
    }
    .reader-toolbar .toolbar-group:first-child {
        width: 100%;
    }
    .page-nav {
        flex-wrap: wrap;
    }
    .page-nav input {
        width: 40px;
    }

    /* Reader viewer: reduce padding */
    .reader-viewer-container {
        padding: 12px;
        max-height: 60vh;
    }

    /* Queue grid: stack on mobile */
    .queue-grid {
        grid-template-columns: 1fr;
    }
    .queue-cover-column img {
        max-width: 120px;
        margin: 0 auto;
    }

    /* Meta edit grid: single column */
    .meta-edit-grid {
        grid-template-columns: 1fr;
    }

    /* Admin */
    .admin-grid {
        grid-template-columns: 1fr;
    }
    .admin-sidebar {
        display: flex;
        overflow-x: auto;
        padding: 12px;
        gap: 4px;
        flex-wrap: nowrap;
    }
    .admin-sidebar > div:first-child {
        display: none; /* Hide the "لوحة المشرف" header on mobile */
    }
    .admin-menu-item {
        white-space: nowrap;
        font-size: 12px;
        padding: 8px 12px;
        margin-bottom: 0;
        flex-shrink: 0;
    }
    .admin-content-area {
        padding: 0;
    }

    /* Auth card: full width on mobile */
    .auth-card {
        padding: 24px;
        margin: 0 8px;
    }

    /* Split layout panels */
    .split-panel-main {
        padding: 12px;
    }
    .panel-header-desc {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }

    /* Tables: horizontal scroll */
    .panel[style*="overflow-x: auto"] {
        max-width: 100%;
    }
    table {
        font-size: 12px !important;
    }
    table th, table td {
        padding: 8px !important;
    }
    table td[style*="display: flex"] {
        flex-wrap: wrap;
        gap: 4px !important;
    }

    /* Modals: full screen on mobile */
    .panel[style*="max-width:"] {
        max-width: 100% !important;
        margin: 8px !important;
        max-height: 95vh !important;
    }
}

@media (max-width: 480px) {
    /* Further tighten for small phones */
    .reader-viewer-container {
        padding: 8px;
        max-height: 50vh;
    }
    .book-card {
        padding: 8px 12px;
    }
    .book-card-cover-wrapper {
        flex-basis: 40px;
    }
    .book-card-cover {
        width: 40px;
        height: 60px;
    }
    .book-card-title {
        font-size: 13px;
    }
    .upload-dropzone {
        padding: 20px;
    }
    .upload-dropzone-icon {
        font-size: 32px;
    }
    .btn {
        padding: 8px 14px;
        font-size: 12px;
    }
    .search-filter-panel {
        padding: 12px;
    }
}

/* ================= Admin Queue / Metadata review ================= */
.queue-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 20px;
}

.queue-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
    margin-bottom: 16px;
}

.queue-grid {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 20px;
}

.queue-cover-column {
    text-align: center;
}

.queue-cover-column img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
}

.queue-details-column {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.meta-edit-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

/* Statistics widgets */
.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-widget {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
}

/* File Upload Drag & Drop */
.upload-dropzone {
    border: 2px dashed var(--primary);
    border-radius: var(--radius-lg);
    background: var(--primary-light);
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.upload-dropzone:hover {
    background: hsl(150, 50%, 92%);
}

.upload-dropzone-icon {
    font-size: 48px;
    color: var(--primary);
    margin-bottom: 12px;
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 64px;
    color: var(--text-light);
    margin-bottom: 16px;
}