/* Qlobus Kitab Evi Design System (White-Green Theme) */

:root {
    --primary-color: #08807A;
    --primary-hover: #055f5b;
    --primary-light: #e6f3f2;
    --primary-medium: #83c0bc;
    --text-dark: #2c3e50;
    --text-muted: #7f8c8d;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --border-color: #e2e8f0;
    --danger-color: #e74c3c;
    --success-color: #2ecc71;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.02);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.08);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-round: 50px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-main: 'Outfit', sans-serif;
}

/* Global Reset */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-main);
    background-color: var(--white);
    color: var(--text-dark);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

input, button, textarea, select {
    font-family: inherit;
    outline: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Button UI Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 22px;
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    gap: 8px;
    border: none;
    font-size: 0.95rem;
}

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

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

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 1.5px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-light);
}

.btn-block {
    width: 100%;
    padding: 12px;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
}

/* Top Announcement Bar */
.top-bar {
    background-color: var(--primary-hover);
    color: var(--white);
    padding: 8px 0;
    font-size: 0.85rem;
    font-weight: 400;
}

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

.top-bar-links {
    display: flex;
    gap: 20px;
}

.top-bar-links a {
    color: var(--primary-light);
}

.top-bar-links a:hover {
    color: var(--white);
}

/* Main Header */
.main-header {
    background-color: var(--white);
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 25px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-logo-img {
    height: 45px;
    width: auto;
    max-height: 100%;
    object-fit: contain;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.brand-qlobus {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--primary-color);
    line-height: 1.1;
}

.brand-sub {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

/* Search Form */
.search-form {
    flex: 1;
    max-width: 500px;
}

.search-input-group {
    display: flex;
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-round);
    padding: 3px 3px 3px 20px;
    transition: var(--transition);
}

.search-input-group:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 126, 52, 0.1);
    background-color: var(--white);
}

.search-input-group input {
    border: none;
    background: transparent;
    width: 100%;
    font-size: 0.95rem;
    color: var(--text-dark);
}

.search-btn {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-round);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

/* Contact Info */
.header-contact {
    display: flex;
    align-items: center;
}

.whatsapp-link {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-hover);
}

.whatsapp-link i {
    font-size: 2rem;
    color: #25d366;
}

.contact-details {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.contact-number {
    font-weight: 600;
    font-size: 0.95rem;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.auth-trigger-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 10px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
}

.auth-trigger-btn:hover {
    background-color: var(--bg-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* User dropdown menu */
.user-menu {
    position: relative;
}

.user-menu-btn {
    background: var(--primary-light);
    color: var(--primary-color);
    border: none;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 5px);
    right: 0;
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    min-width: 160px;
    box-shadow: var(--shadow-lg);
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.user-menu:hover .user-dropdown {
    display: flex;
}

.user-dropdown a {
    padding: 10px 15px;
    font-size: 0.9rem;
    color: var(--text-dark);
    border-bottom: 1px solid var(--border-color);
}

.user-dropdown a:last-child {
    border-bottom: none;
}

.user-dropdown a:hover {
    background-color: var(--bg-light);
    color: var(--primary-color);
}

/* Cart Button */
.header-cart-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: var(--primary-light);
    padding: 10px 18px;
    border-radius: var(--radius-md);
    color: var(--primary-color);
    font-weight: 500;
}

.header-cart-btn:hover {
    background-color: var(--primary-medium);
    color: var(--white);
}

.header-cart-btn:hover .cart-badge {
    background-color: var(--white);
    color: var(--primary-hover);
}

.cart-icon-wrapper {
    position: relative;
    font-size: 1.4rem;
}

.cart-badge {
    position: absolute;
    top: -8px;
    right: -10px;
    background-color: var(--primary-color);
    color: var(--white);
    font-size: 0.7rem;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cart-info {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.cart-label {
    font-size: 0.75rem;
    opacity: 0.8;
}

.cart-total {
    font-weight: 700;
    font-size: 0.9rem;
}

/* Mobile menu toggles and drawer headers default to hidden on desktop */
.mobile-menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.mobile-menu-toggle:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.mobile-nav-header {
    display: none;
}

.mobile-only-item {
    display: none;
}

/* Main Navigation */
.main-nav {
    background-color: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
}

.nav-links {
    display: flex;
    width: 100%;
}

.nav-links li {
    position: relative;
}

.nav-item {
    display: block;
    padding: 12px 20px;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-dark);
}

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

/* Main Content Body */
.main-content {
    flex: 1;
    padding: 30px 0;
}

/* Alerts */
.alert-container {
    margin-bottom: 25px;
}

.alert {
    padding: 15px 20px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-close {
    position: absolute;
    right: 15px;
    background: transparent;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: inherit;
}

/* Hero Section / Slider */
.hero-slider {
    background: linear-gradient(135deg, var(--primary-light) 0%, #ffffff 100%);
    border-radius: var(--radius-lg);
    padding: 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.hero-slider::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background-color: rgba(30, 126, 52, 0.05);
    top: -100px;
    right: -100px;
}

.slider-content {
    max-width: 500px;
    position: relative;
    z-index: 1;
}

.slider-content h2 {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 15px;
    line-height: 1.2;
}

.slider-content h2 span {
    color: var(--primary-color);
}

.slider-content p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 25px;
}

.slider-img {
    max-width: 450px;
    position: relative;
    z-index: 1;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.feature-box {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background-color: var(--primary-light);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.feature-text h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.feature-text p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 25px;
    border-left: 4px solid var(--primary-color);
    padding-left: 15px;
}

.section-header h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-dark);
}

.section-header a {
    color: var(--primary-color);
    font-weight: 500;
    font-size: 0.9rem;
}

.section-header a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Book Grid & Cards */
.books-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-bottom: 50px;
}

.book-card {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
}

.book-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-medium);
}

.book-img-wrapper {
    background-color: var(--bg-light);
    padding: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 250px;
    overflow: hidden;
}

.book-img-wrapper a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
}

.book-img-wrapper img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.book-card:hover .book-img-wrapper img {
    transform: scale(1.05);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

/* Default Placeholder Cover Style */
.book-cover-placeholder {
    width: 140px;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: var(--white);
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 15px;
    font-size: 0.8rem;
    position: relative;
    border-left: 6px solid rgba(0,0,0,0.25);
}

.placeholder-title {
    font-weight: 700;
    font-size: 0.9rem;
    line-height: 1.2;
}

.placeholder-author {
    font-size: 0.75rem;
    opacity: 0.8;
}

.book-card-info {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.book-author {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 5px;
}

.book-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.3;
    color: var(--text-dark);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 2.6em;
}

.book-rating {
    display: flex;
    gap: 3px;
    color: #f1c40f;
    font-size: 0.75rem;
    margin-bottom: 10px;
}

.book-price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    margin-bottom: 15px;
}

.book-price {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-color);
}

.book-badge {
    font-size: 0.7rem;
    background-color: var(--primary-light);
    color: var(--primary-color);
    padding: 3px 8px;
    border-radius: var(--radius-round);
    font-weight: 500;
}

.book-card-actions {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 8px;
}

/* Category Grid list on Home Page */
.category-boxes {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 15px;
    margin-bottom: 50px;
}

.category-box {
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px 10px;
    text-align: center;
    transition: var(--transition);
}

.category-box:hover {
    background-color: var(--primary-light);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.category-box i {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.category-box h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dark);
}

/* Book Detail Page Styles */
.book-details-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 50px;
}

.book-gallery {
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    max-height: 450px;
}

.book-detail-placeholder {
    width: 200px;
    height: 300px;
    font-size: 1.1rem;
    padding: 25px;
}

.book-gallery img {
    max-height: 380px;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
}

.book-info-panel h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 10px;
    line-height: 1.2;
}

.book-info-author {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.book-info-author span {
    color: var(--primary-color);
    font-weight: 500;
}

.book-info-price-block {
    background-color: var(--bg-light);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.book-info-price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
}

.book-stock-status {
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
}

.status-in-stock {
    color: var(--success-color);
}

.status-out-stock {
    color: var(--danger-color);
}

.book-specs-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 30px;
}

.book-specs-table td {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.book-specs-table td:first-child {
    color: var(--text-muted);
    width: 40%;
}

.book-specs-table td:last-child {
    font-weight: 500;
}

.book-actions-row {
    display: flex;
    gap: 15px;
    align-items: center;
}

.quantity-stepper {
    display: flex;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.qty-btn {
    background-color: var(--white);
    border: none;
    width: 40px;
    height: 45px;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-dark);
}

.qty-btn:hover {
    background-color: var(--bg-light);
}

.qty-input {
    width: 50px;
    text-align: center;
    border: none;
    border-left: 1.5px solid var(--border-color);
    border-right: 1.5px solid var(--border-color);
    font-size: 1rem;
    font-weight: 600;
}

/* Book description / Tabs */
.book-desc-section {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    margin-top: 40px;
}

.desc-tabs {
    display: flex;
    gap: 20px;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 20px;
}

.desc-tab-btn {
    background: transparent;
    border: none;
    padding: 10px 5px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    position: relative;
}

.desc-tab-btn.active {
    color: var(--primary-color);
}

.desc-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

.tab-pane {
    font-size: 0.95rem;
    color: var(--text-dark);
    line-height: 1.7;
}

/* Catalog / Search Page Layout */
.catalog-container {
    display: grid;
    grid-template-columns: 1fr 3fr;
    gap: 30px;
}

/* Sidebar Filters */
.catalog-sidebar {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    height: fit-content;
}

.filter-group {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.filter-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.filter-group h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.filter-list li {
    margin-bottom: 10px;
}

.filter-list label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    cursor: pointer;
}

.filter-list input[type="checkbox"],
.filter-list input[type="radio"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-color);
}

/* Catalog View Main Panel */
.catalog-main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    background-color: var(--bg-light);
    padding: 12px 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.results-count {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.results-count strong {
    color: var(--text-dark);
}

.sort-select-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sort-select-wrapper span {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.sort-select {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--white);
    font-size: 0.9rem;
    color: var(--text-dark);
    cursor: pointer;
}

/* Shopping Cart Page */
.cart-table-wrapper {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 30px;
    box-shadow: var(--shadow-sm);
}

.cart-table {
    width: 100%;
    border-collapse: collapse;
}

.cart-table th {
    background-color: var(--bg-light);
    padding: 15px 20px;
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-dark);
    border-bottom: 1px solid var(--border-color);
}

.cart-table td {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.cart-table tr:last-child td {
    border-bottom: none;
}

.cart-book-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.cart-book-img {
    width: 60px;
    height: 80px;
    background-color: var(--bg-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5px;
}

.cart-book-img img {
    max-height: 100%;
    object-fit: contain;
}

.cart-book-img-placeholder {
    width: 45px;
    height: 65px;
    font-size: 0.5rem;
    padding: 5px;
    border-left-width: 3px;
}

.cart-book-meta h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 3px;
}

.cart-book-meta p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.cart-item-price {
    font-weight: 600;
    font-size: 0.95rem;
}

.cart-item-total {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--primary-color);
}

.btn-remove-item {
    background: transparent;
    border: none;
    color: var(--danger-color);
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-remove-item:hover {
    transform: scale(1.1);
}

/* Cart Summary Page Widget */
.cart-summary-panel {
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 25px;
    max-width: 400px;
    margin-left: auto;
    box-shadow: var(--shadow-sm);
}

.cart-summary-panel h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    border-bottom: 1.5px solid var(--border-color);
    padding-bottom: 10px;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.summary-row.total-row {
    border-top: 1.5px solid var(--border-color);
    padding-top: 15px;
    margin-top: 15px;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary-color);
}

.cart-empty-state {
    text-align: center;
    padding: 60px 20px;
    background-color: var(--bg-light);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-lg);
}

.cart-empty-state i {
    font-size: 4rem;
    color: var(--primary-medium);
    margin-bottom: 20px;
}

.cart-empty-state h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.cart-empty-state p {
    color: var(--text-muted);
    margin-bottom: 25px;
}

/* Checkout Page Layout */
.checkout-layout {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
}

.checkout-card {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-sm);
}

.checkout-card h2 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 25px;
    border-bottom: 1.5px solid var(--border-color);
    padding-bottom: 10px;
}

.checkout-form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-group-full {
    grid-column: span 2;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 15px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input, 
.form-group textarea,
.form-group select {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group input:focus, 
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 126, 52, 0.08);
}

.text-danger {
    font-size: 0.75rem;
    color: var(--danger-color);
    margin-top: 3px;
}

.checkout-item-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.checkout-item-row:last-child {
    border-bottom: none;
}

.checkout-item-title {
    font-size: 0.9rem;
    font-weight: 500;
}

.checkout-item-qty {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Modals global configuration */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.modal-content {
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    position: relative;
    max-width: 500px;
    width: 90%;
    animation: modalFadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalFadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.6rem;
    font-weight: 700;
    cursor: pointer;
    color: var(--text-muted);
}

.close-modal:hover {
    color: var(--text-dark);
}

/* Auth Modal elements */
.auth-tabs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 25px;
}

.auth-tab-btn {
    background: transparent;
    border: none;
    padding: 12px;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    position: relative;
}

.auth-tab-btn.active {
    color: var(--primary-color);
}

.auth-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

.hidden {
    display: none !important;
}

.oneclick-modal-box {
    max-width: 450px;
}

.oneclick-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

/* Footer Section */
.main-footer {
    background-color: #1a2a1d;
    color: #e8f5e9;
    padding: 60px 0 0 0;
    border-top: 5px solid var(--primary-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.footer-logo-img {
    height: 38px;
    width: auto;
    object-fit: contain;
}

.footer-desc {
    font-size: 0.85rem;
    opacity: 0.8;
    line-height: 1.6;
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 36px;
    height: 36px;
    background-color: rgba(255,255,255,0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.social-links a:hover {
    background-color: var(--primary-color);
}

.footer-col h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 35px;
    height: 2px;
    background-color: var(--primary-medium);
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    font-size: 0.85rem;
    opacity: 0.8;
}

.footer-col ul li a:hover {
    opacity: 1;
    color: var(--primary-medium);
    padding-left: 5px;
}

.contact-list li {
    display: flex;
    gap: 12px;
    font-size: 0.85rem;
    opacity: 0.8;
}

.contact-list li i {
    color: var(--primary-medium);
    font-size: 1rem;
    margin-top: 3px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    font-size: 0.8rem;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    opacity: 0.7;
}

.payment-icons {
    display: flex;
    gap: 15px;
    font-size: 1.8rem;
}

/* ==========================================================================
   Admin Area Styles (Embedded inside site.css for uniform theme)
   ========================================================================== */
.admin-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--white);
    font-size: 1.3rem;
    cursor: pointer;
}

.admin-sidebar-header-mobile {
    display: none;
}

.admin-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: calc(100vh - 170px);
}

.admin-sidebar {
    background-color: #121c14;
    color: #e8f5e9;
    padding: 25px 0;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.admin-sidebar h2 {
    font-size: 1.15rem;
    font-weight: 700;
    padding: 0 25px 20px 25px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    margin-bottom: 20px;
    color: var(--white);
    display: flex;
    align-items: center;
    gap: 8px;
}

.admin-menu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 25px;
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0.85;
    color: #e8f5e9;
    border-left: 3px solid transparent;
}

.admin-menu-link:hover, .admin-menu-link.active {
    background-color: rgba(255,255,255,0.05);
    opacity: 1;
    color: var(--white);
    border-left-color: var(--primary-color);
}

.admin-menu-link i {
    width: 20px;
    font-size: 1rem;
    color: var(--primary-medium);
}

.admin-main-panel {
    background-color: var(--white);
    padding: 35px;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    border: 1px solid var(--border-color);
    border-left: none;
}

/* Admin Dashboard Stats Cards */
.admin-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-bottom: 40px;
}

.stat-card {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 25px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
}

.stat-details h3 {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 5px;
}

.stat-details p {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-dark);
}

.stat-icon-box {
    width: 60px;
    height: 60px;
    background-color: var(--primary-light);
    color: var(--primary-color);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
}

.stat-card:nth-child(2) .stat-icon-box {
    background-color: #e3f2fd;
    color: #1e88e5;
}

.stat-card:nth-child(3) .stat-icon-box {
    background-color: #fff8e1;
    color: #ffb300;
}

/* Standard Admin Table */
.admin-table-wrapper {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    box-shadow: var(--shadow-sm);
    margin-top: 20px;
    -webkit-overflow-scrolling: touch;
}

.admin-table th,
.admin-table td {
    white-space: nowrap;
}

.admin-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.admin-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    gap: 15px;
    flex-wrap: wrap;
}

/* Admin Top Header */
.admin-top-header {
    background-color: #121c14;
    color: var(--white);
    padding: 12px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.admin-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    color: var(--white);
    font-size: 1.1rem;
}

.admin-brand i {
    color: var(--primary-color);
}

.admin-user-info {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 0.9rem;
}

.admin-user-info span i {
    color: var(--primary-medium);
}

.admin-logout-btn {
    color: #fee2e2;
    font-weight: 500;
}

.admin-logout-btn:hover {
    color: var(--danger-color);
}

.admin-container {
    padding: 0;
}

.admin-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.admin-table th {
    background-color: var(--bg-light);
    color: var(--text-dark);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 16px 20px;
    border-bottom: 2px solid var(--border-color);
    text-align: left;
}

.admin-table td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-dark);
    vertical-align: middle;
    transition: var(--transition);
}

.admin-table tbody tr {
    transition: var(--transition);
}

.admin-table tbody tr:hover {
    background-color: rgba(8, 128, 122, 0.03);
}

.admin-table tr:last-child td {
    border-bottom: none;
}

.admin-actions-cell {
    display: flex;
    gap: 8px;
}

/* Badges */
.admin-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    border-radius: var(--radius-round);
    font-size: 0.75rem;
    font-weight: 600;
}

.admin-badge-success {
    background-color: #e8f8f5;
    color: #117a65;
}

.admin-badge-danger {
    background-color: #fce4d6;
    color: #c0392b;
}

.admin-badge-category {
    background-color: var(--primary-light);
    color: var(--primary-color);
    border: 1px solid var(--primary-medium);
}

.admin-badge-lang {
    background-color: #f1f5f9;
    color: #475569;
    border: 1px solid #cbd5e1;
}

/* Actions Button Group */
.admin-btn-action {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    background-color: var(--white);
    color: var(--text-dark);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

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

.admin-btn-action-delete {
    color: var(--danger-color);
    border-color: #f8d7da;
}

.admin-btn-action-delete:hover {
    border-color: var(--danger-color);
    color: var(--white);
    background-color: var(--danger-color);
}

/* Form Styles for Admin CRUD */
.admin-form-box {
    max-width: 700px;
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-sm);
}

/* Responsive adjustments */
@media(max-width: 992px) {
    /* Mobile Drawer Menu */
    .main-nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
        display: none;
        border-bottom: none;
        backdrop-filter: blur(4px);
    }
    .main-nav.open {
        display: block;
    }
    .nav-container {
        position: absolute;
        left: 0;
        top: 0;
        width: 290px;
        height: 100%;
        background-color: var(--white);
        flex-direction: column;
        padding: 0;
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .main-nav.open .nav-container {
        transform: translateX(0);
    }
    .mobile-nav-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
    }
    .mobile-nav-title {
        font-weight: 700;
        font-size: 1.1rem;
        color: var(--text-dark);
        letter-spacing: 0.5px;
    }
    .mobile-nav-close {
        background: transparent;
        border: none;
        font-size: 1.8rem;
        font-weight: 700;
        cursor: pointer;
        color: var(--text-muted);
    }
    .mobile-nav-close:hover {
        color: var(--text-dark);
    }
    .nav-links {
        flex-direction: column;
        width: 100%;
        padding: 10px 0;
    }
    .nav-links li {
        width: 100%;
    }
    .nav-item {
        padding: 12px 20px;
        font-size: 1rem;
        border-left: 3px solid transparent;
    }
    .nav-item:hover, .nav-item.active {
        color: var(--primary-color);
        background-color: var(--primary-light);
        border-left-color: var(--primary-color);
    }
    .mobile-only-item {
        display: block;
    }
    .mobile-nav-divider {
        border: 0;
        border-top: 1px solid var(--border-color);
        margin: 10px 0;
    }
    .mobile-nav-whatsapp {
        color: #25d366 !important;
        font-weight: 600;
        font-size: 0.95rem;
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 12px 20px;
    }
    .mobile-user-info {
        padding: 12px 20px;
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    .mobile-user-name {
        font-weight: 600;
        color: var(--text-dark);
        font-size: 0.95rem;
    }
    .mobile-user-sublinks {
        display: flex;
        flex-direction: column;
        gap: 8px;
        padding-left: 15px;
    }
    .mobile-user-sublinks a {
        font-size: 0.9rem;
        color: var(--text-muted);
        padding: 4px 0;
        border: none;
    }
    .mobile-user-sublinks a:hover {
        color: var(--primary-color);
        background: transparent;
    }

    /* Header Responsive Layout */
    .mobile-menu-toggle {
        display: flex;
    }
    .header-container {
        display: grid;
        grid-template-columns: 1fr auto;
        grid-template-rows: auto auto;
        gap: 12px 20px;
        padding-top: 10px;
        padding-bottom: 10px;
    }
    .logo {
        grid-column: 1;
        grid-row: 1;
    }
    .header-actions {
        grid-column: 2;
        grid-row: 1;
        gap: 10px;
    }
    .search-form {
        grid-column: 1 / span 2;
        grid-row: 2;
        max-width: 100%;
        width: 100%;
    }
    .header-contact, 
    .auth-trigger-btn,
    .user-menu,
    .cart-info {
        display: none !important;
    }
    .header-cart-btn {
        padding: 8px 12px;
        background-color: transparent;
    }
    .header-cart-btn:hover {
        background-color: var(--primary-light);
        color: var(--primary-color);
    }
    .header-cart-btn:hover .cart-badge {
        background-color: var(--primary-color);
        color: var(--white);
    }

    /* Page-level grids response */
    .hero-slider {
        flex-direction: column;
        padding: 30px;
        text-align: center;
        gap: 30px;
    }
    .slider-content {
        max-width: 100%;
    }
    .slider-img {
        max-width: 100%;
        margin-top: 20px;
    }
    .hero-slider .slider-img > div {
        font-size: 6rem !important;
        gap: 15px !important;
    }
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    .category-boxes {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }
    .books-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    .book-details-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .catalog-container {
        grid-template-columns: 1fr;
    }
    .cart-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .cart-summary-panel {
        max-width: 100%;
        margin-left: 0;
    }
    .checkout-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .admin-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .admin-top-header {
        justify-content: space-between;
        flex-wrap: nowrap;
        gap: 10px;
        padding: 15px 20px;
    }
    
    .admin-user-info {
        margin-left: 0;
    }

    .admin-sidebar-header-mobile {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px;
        border-bottom: 1px solid rgba(255,255,255,0.06);
        margin-bottom: 10px;
    }
    
    .admin-sidebar-header-mobile span {
        font-weight: 700;
        font-size: 0.9rem;
        color: rgba(255,255,255,0.6);
        letter-spacing: 1px;
    }
    
    .admin-sidebar-close {
        background: transparent;
        border: none;
        color: rgba(255,255,255,0.6);
        font-size: 1.8rem;
        font-weight: 700;
        cursor: pointer;
    }

    .admin-sidebar-close:hover {
        color: var(--white);
    }

    .admin-sidebar {
        position: fixed;
        left: 0;
        top: 0;
        width: 260px;
        height: 100%;
        z-index: 1001;
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        border-radius: 0 !important;
        box-shadow: var(--shadow-lg);
        overflow-y: auto;
        padding: 0 0 25px 0;
    }

    .admin-sidebar.open {
        transform: translateX(0);
    }
    
    .admin-sidebar h2 {
        padding: 10px 25px 20px 25px;
        border-bottom: 1px solid rgba(255,255,255,0.06);
        margin-bottom: 20px;
        font-size: 1.15rem;
    }

    .admin-sidebar .admin-menu-link {
        border-left: 3px solid transparent;
        border-bottom: none;
        padding: 12px 25px;
        justify-content: flex-start;
        border-radius: 0;
        background-color: transparent;
    }
    
    .admin-sidebar .admin-menu-link:hover, 
    .admin-sidebar .admin-menu-link.active {
        border-left-color: var(--primary-color);
        border-bottom-color: transparent;
        background-color: rgba(255, 255, 255, 0.05);
    }

    .admin-sidebar .admin-sidebar-footer {
        margin-top: 25px !important;
        padding-top: 15px !important;
        border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    /* Sidebar slide-out overlay */
    .admin-sidebar-overlay {
        position: fixed;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0,0,0,0.5);
        z-index: 1000;
        opacity: 0;
        transition: opacity 0.3s ease;
        backdrop-filter: blur(2px);
    }
    
    .admin-sidebar-overlay.show {
        opacity: 1;
    }

    .admin-layout {
        grid-template-columns: 1fr;
    }

    .admin-container {
        padding: 0 15px;
    }

    .admin-main-panel {
        border-radius: var(--radius-lg);
        border: 1px solid var(--border-color);
        padding: 25px 20px;
    }

    .admin-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        margin-bottom: 25px;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
}

@media(max-width: 768px) {
    /* Responsive Admin Table */
    .admin-table-wrapper {
        background: transparent;
        border: none;
        box-shadow: none;
        margin-top: 15px;
    }
    
    .admin-table,
    .admin-table tbody,
    .admin-table tr,
    .admin-table td {
        display: block;
        width: 100% !important;
    }
    
    .admin-table thead {
        display: none;
    }
    
    .admin-table tr {
        background-color: var(--white);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        padding: 20px;
        margin-bottom: 20px;
        box-shadow: var(--shadow-sm);
        position: relative;
    }
    
    .admin-table td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 12px 0;
        border-bottom: 1px dashed var(--border-color);
        font-size: 0.9rem;
        text-align: right;
        white-space: normal;
    }
    
    .admin-table td:last-child {
        border-bottom: none;
        padding-bottom: 0;
        justify-content: flex-end;
    }
    
    .admin-table td::before {
        content: attr(data-label);
        font-weight: 700;
        color: var(--text-muted);
        font-size: 0.8rem;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        text-align: left;
        margin-right: 15px;
        flex-shrink: 0;
    }

    /* Responsive Cart Table */
    .cart-table thead {
        display: none;
    }
    .cart-table tr {
        display: flex;
        flex-direction: column;
        border-bottom: 1px solid var(--border-color);
        padding: 15px;
        position: relative;
        gap: 8px;
    }
    .cart-table td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 4px 0;
        border: none;
        width: 100% !important;
        text-align: right;
    }
    .cart-table td:first-child {
        flex-direction: row;
        justify-content: flex-start;
        text-align: left;
        gap: 15px;
        padding-bottom: 8px;
        border-bottom: 1px dashed var(--border-color);
    }
    .cart-table td:last-child {
        position: absolute;
        right: 15px;
        top: 15px;
        width: auto !important;
    }
    .cart-table td::before {
        content: attr(data-label);
        font-weight: 700;
        color: var(--text-dark);
        font-size: 0.85rem;
    }
    .cart-table td:first-child::before,
    .cart-table td:last-child::before {
        content: none;
    }
}

@media(max-width: 576px) {
    .admin-form-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    .admin-top-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        flex-wrap: nowrap;
        padding: 12px 15px;
    }
    .admin-brand {
        font-size: 0.95rem;
    }
    .admin-user-info span {
        display: none;
    }
    .admin-user-info {
        gap: 12px;
    }
    .books-grid {
        grid-template-columns: 1fr;
    }
    .category-boxes {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .top-bar-content {
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }
    .slider-content h2 {
        font-size: 2rem;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .checkout-form-grid {
        grid-template-columns: 1fr;
    }
    .form-group-full {
        grid-column: span 1;
    }
    .book-actions-row {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    .book-actions-row form {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }
    .quantity-stepper {
        width: 100%;
        justify-content: center;
    }
    .qty-btn {
        flex: 1;
    }
    .qty-input {
        flex: 1.5;
    }
    .book-actions-row form button[type="submit"],
    .book-actions-row .btn-outline {
        width: 100%;
        height: 45px;
    }
}