@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Rubik:wght@300;400;500;600;700&display=swap');

:root {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --border-color: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --primary-color: #3b82f6;
    --primary-glow: rgba(59, 130, 246, 0.08);
    --accent-color: #10b981;
    --accent-glow: rgba(16, 185, 129, 0.08);
    --font-sans: 'Rubik', 'Outfit', sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --blur-intensity: 12px;
}

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

html, body {
    overflow-x: hidden !important;
    max-width: 100vw;
    width: 100%;
    position: relative;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    line-height: 1.6;
}

/* Header & Navbar */
header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(var(--blur-intensity));
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1500px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1rem;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-img {
    height: 42px;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.nav-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    cursor: pointer;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

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

.nav-btn.primary {
    background: var(--primary-color);
    border-color: transparent;
    color: #fff;
}

.nav-btn.primary:hover {
    background: #2563eb;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

/* Dropdown Navigation Menus */
.nav-dropdown {
    position: relative;
    display: inline-block;
    padding-bottom: 8px;
    margin-bottom: -8px;
}

.nav-dropdown-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.nav-dropdown-btn:hover,
.nav-dropdown:hover .nav-dropdown-btn {
    background: var(--bg-primary);
    border-color: var(--primary-color);
}

.nav-dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--bg-card);
    min-width: 220px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    z-index: 1000;
    padding: 0.35rem 0;
}

.nav-dropdown-content::before {
    content: "";
    position: absolute;
    top: -14px;
    left: 0;
    right: 0;
    height: 14px;
    background: transparent;
}

.nav-dropdown-content a {
    color: var(--text-primary);
    padding: 0.65rem 1.1rem;
    text-decoration: none;
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.15s ease, color 0.15s ease;
    text-align: right;
}

.nav-dropdown-content a:first-child {
    border-top-left-radius: 11px;
    border-top-right-radius: 11px;
}

.nav-dropdown-content a:last-child {
    border-bottom-left-radius: 11px;
    border-bottom-right-radius: 11px;
}

.nav-dropdown-content a:hover {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
}

.nav-dropdown:hover .nav-dropdown-content,
.nav-dropdown:focus-within .nav-dropdown-content {
    display: block;
}

/* Main Container */
main.container {
    max-width: 1500px;
    margin: 1.5rem auto;
    padding: 0 1rem;
}

/* Card Style */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    transition: var(--transition-smooth);
}

.card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

/* Search and Filters Section */
.filter-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.search-box {
    display: flex;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.25rem 0.5rem;
    align-items: center;
    transition: var(--transition-smooth);
}

.search-box:focus-within {
    border-color: var(--primary-color);
    background: #fff;
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.search-box input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    padding: 0.75rem;
    font-size: 1rem;
    font-family: var(--font-sans);
}

.search-box button {
    background: var(--primary-color);
    color: #fff;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.search-box button:hover {
    background: #2563eb;
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
}

.filter-select {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 1px 2px rgba(0,0,0,0.02);
}

.filter-select:hover {
    border-color: #cbd5e1;
}

.filter-select:focus {
    border-color: var(--primary-color);
}

/* Category Badges (Pills) */
.category-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.pill {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
    cursor: pointer;
    box-shadow: 0 1px 2px rgba(0,0,0,0.02);
}

.pill:hover, .pill.active {
    background: var(--primary-color);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 12px var(--primary-glow);
}

/* Books Catalog Grid */
.books-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 1rem;
}

@media (max-width: 1200px) {
    .books-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .books-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

/* Mobile Responsive Overhaul (< 768px) */
@media (max-width: 768px) {
    html, body {
        overflow-x: hidden !important;
        width: 100% !important;
        max-width: 100vw !important;
    }

    /* Header Nav */
    .nav-container {
        flex-direction: column !important;
        gap: 0.4rem !important;
        padding: 0.4rem 0.5rem !important;
        align-items: center !important;
    }

    .logo-img {
        height: 32px !important;
    }

    .nav-brand {
        font-size: 1.2rem !important;
    }

    .nav-menu {
        flex-wrap: wrap !important;
        justify-content: center !important;
        gap: 0.35rem !important;
        width: 100% !important;
    }

    .nav-btn {
        padding: 0.3rem 0.7rem !important;
        font-size: 0.78rem !important;
        gap: 0.25rem !important;
    }

    /* Container & Cards */
    main.container {
        padding: 0 0.4rem !important;
        margin: 0.5rem auto !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    .card {
        padding: 0.65rem 0.75rem !important;
        border-radius: 10px !important;
        box-sizing: border-box !important;
        width: 100% !important;
    }

    /* Search & Filters */
    .filter-section {
        margin-bottom: 0.75rem !important;
    }

    .search-box {
        flex-direction: column !important;
        padding: 0.35rem !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    .search-box input {
        width: 100% !important;
        font-size: 0.85rem !important;
        padding: 0.45rem !important;
        box-sizing: border-box !important;
    }

    .search-box button {
        width: 100% !important;
        padding: 0.45rem !important;
        font-size: 0.88rem !important;
    }

    .filters-grid {
        display: grid !important;
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
        gap: 0.35rem !important;
        margin-top: 0.6rem !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    .filters-grid > * {
        min-width: 0 !important;
        max-width: 100% !important;
    }

    .filter-select {
        width: 100% !important;
        min-width: 0 !important;
        max-width: 100% !important;
        padding: 0.45rem 0.3rem !important;
        font-size: 0.78rem !important;
        box-sizing: border-box !important;
        text-overflow: ellipsis !important;
        overflow: hidden !important;
        white-space: nowrap !important;
    }

    .category-pills {
        gap: 0.3rem !important;
        justify-content: center !important;
        margin-top: 0.25rem !important;
        margin-bottom: 0.75rem !important;
    }

    .pill {
        padding: 0.22rem 0.55rem !important;
        font-size: 0.75rem !important;
        box-sizing: border-box !important;
    }

    /* Books Grid: Strictly Equal 50/50 Columns */
    .books-grid {
        display: grid !important;
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
        gap: 0.5rem !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    .books-grid > * {
        min-width: 0 !important;
        max-width: 100% !important;
    }

    .book-card {
        min-width: 0 !important;
        width: 100% !important;
        padding: 0.5rem !important;
        border-radius: 10px !important;
        box-sizing: border-box !important;
        display: flex !important;
        flex-direction: column !important;
    }

    .book-cover-container {
        width: 100% !important;
        aspect-ratio: 2/3 !important;
        min-width: 0 !important;
        margin-bottom: 0.4rem !important;
        overflow: hidden !important;
        border-radius: 6px !important;
    }

    .book-cover {
        width: 100% !important;
        height: 100% !important;
        object-fit: cover !important;
    }

    .book-details {
        min-width: 0 !important;
        width: 100% !important;
        flex: 1 !important;
    }

    .book-title {
        font-size: 0.82rem !important;
        height: 2.3rem !important;
        line-height: 1.15 !important;
        margin-bottom: 0.2rem !important;
        word-break: break-word !important;
        overflow: hidden !important;
    }

    .book-author {
        font-size: 0.7rem !important;
        margin-bottom: 0.25rem !important;
        white-space: nowrap !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
    }

    .book-meta-footer {
        padding-top: 0.4rem !important;
        gap: 0.2rem !important;
    }

    .book-price {
        font-size: 0.88rem !important;
        min-width: 0 !important;
    }

    .book-price .sale-orig {
        font-size: 0.72rem !important;
    }

    .add-cart-btn {
        width: 26px !important;
        height: 26px !important;
        min-width: 26px !important;
        font-size: 0.75rem !important;
    }
}

.book-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
    color: inherit;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    transition: var(--transition-smooth);
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}

.book-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    border-color: #cbd5e1;
}

.book-cover-container {
    width: 100%;
    aspect-ratio: 2/3;
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 1rem;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    background: #f1f5f9;
}

.book-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.book-details {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.book-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 3.2rem;
}

.book-author {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.book-meta-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

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

.book-price .sale-orig {
    font-size: 0.85rem;
    text-decoration: line-through;
    color: var(--text-secondary);
    margin-right: 0.5rem;
}

.add-cart-btn {
    background: #f1f5f9;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.add-cart-btn:hover {
    background: var(--accent-color);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2);
}

/* Book Details Page */
.detail-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
}

@media (max-width: 768px) {
    .detail-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.detail-cover {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    background: #f1f5f9;
}

.detail-info h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.detail-author {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.detail-meta-list {
    margin: 1.5rem 0;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.detail-meta-item {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    font-size: 0.9rem;
}

.detail-meta-item span {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.detail-desc {
    font-size: 1rem;
    color: #334155;
    margin: 2rem 0;
    white-space: pre-line;
}

.detail-action-card {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 480px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.03);
    margin-top: 2rem;
    width: 100%;
    box-sizing: border-box;
}

.detail-action-card .price-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 0.85rem;
    box-sizing: border-box;
}

.detail-action-card .price-container span {
    white-space: nowrap;
}

.detail-action-card .book-price {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    font-size: 1.6rem;
    font-weight: 700;
    white-space: nowrap;
}

.detail-action-buttons {
    display: flex;
    gap: 0.85rem;
    align-items: center;
    width: 100%;
    box-sizing: border-box;
}

.detail-action-buttons form {
    margin: 0;
    flex: 1 1 0%;
    min-width: 0;
    display: flex;
}

.detail-action-buttons .btn-borrow,
.detail-action-buttons .btn-add-cart {
    flex: 1 1 0%;
    min-width: 0;
    width: 100%;
    height: 48px;
    padding: 0 0.5rem;
    font-size: 0.95rem;
    font-weight: 700;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    white-space: nowrap;
    box-sizing: border-box;
    transition: var(--transition-smooth);
    text-align: center;
}

.detail-action-buttons .btn-borrow {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.detail-action-buttons .btn-add-cart {
    background: var(--accent-color);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
}

@media (max-width: 480px) {
    .detail-action-card {
        max-width: 100%;
        padding: 1.15rem;
    }

    .detail-action-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .detail-action-buttons form,
    .detail-action-buttons .btn-borrow,
    .detail-action-buttons .btn-add-cart {
        width: 100% !important;
        flex: none !important;
        height: 50px;
        font-size: 1rem;
    }
    
    .detail-cover {
        max-width: 220px;
        margin: 0 auto;
        display: block;
    }
    
    .ai-widget {
        bottom: 1rem;
        left: 1rem;
    }
}

/* Floating AI Librarian Widget */
.ai-widget {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    z-index: 99;
}

.ai-toggle-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, #4f46e5 100%);
    border: none;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    transition: var(--transition-smooth);
}

.ai-toggle-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(59, 130, 246, 0.4);
}

/* Slide Drawer (Cart & AI Chat) */
.drawer {
    position: fixed;
    top: 0;
    bottom: 0;
    width: 420px;
    max-width: 100vw;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(var(--blur-intensity));
    border-left: 1px solid var(--border-color);
    z-index: 1000;
    padding: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: -8px 0 24px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.3s ease;
    visibility: hidden;
    pointer-events: none;
}

.drawer.left {
    left: 0;
    right: auto;
    border-left: none;
    border-right: 1px solid var(--border-color);
    box-shadow: 8px 0 24px rgba(0, 0, 0, 0.05);
    transform: translateX(-100%);
}

.drawer.right {
    right: 0;
    left: auto;
    transform: translateX(100%);
}

.drawer.open {
    transform: translateX(0) !important;
    visibility: visible !important;
    pointer-events: auto !important;
}

.drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0;
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 2rem 1rem;
    flex-shrink: 0;
}

.drawer-close-btn {
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 1.2rem;
}

/* Cart Item Styles */
.cart-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding: 1.5rem 2rem;
    margin-bottom: 0;
}

.cart-item {
    display: flex;
    gap: 1rem;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.cart-item-cover {
    width: 55px;
    aspect-ratio: 2/3;
    border-radius: 4px;
    object-fit: cover;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.cart-item-details {
    flex: 1;
}

.cart-item-title {
    font-weight: 600;
    font-size: 0.9rem;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cart-item-price {
    color: var(--accent-color);
    font-weight: 600;
}

.remove-item-btn {
    background: transparent;
    border: none;
    color: #ef4444;
    cursor: pointer;
    font-size: 1.15rem;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.remove-item-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
    transform: scale(1.1);
}

/* Publisher Dashboard Layout */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.stat-num {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-top: 0.5rem;
}

/* Tables */
.table-container {
    width: 100%;
    overflow-x: auto;
    margin-top: 1.5rem;
}

table.report-table {
    width: 100%;
    border-collapse: collapse;
    text-align: right;
}

table.report-table th, table.report-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

table.report-table th {
    background: #f8fafc;
    color: var(--text-secondary);
    font-weight: 500;
}

table.report-table tr:hover td {
    background: #f8fafc;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.form-group input, .form-group textarea {
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem;
    color: var(--text-primary);
    font-family: var(--font-sans);
    outline: none;
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 0.75rem 2rem;
    font-family: var(--font-sans);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.btn-primary:hover {
    background: #2563eb;
}

/* Two-column checkout grid */
.checkout-layout {
    display: grid;
    grid-template-columns: 1fr 450px;
    gap: 2rem;
    align-items: start;
}

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

/* Site Footer styles */
.site-footer {
    background: #0f172a;
    color: #cbd5e1;
    padding: 2.25rem 1.5rem 1.25rem;
    margin-top: 2.5rem;
    border-top: 1px solid #1e293b;
    font-size: 0.92rem;
    direction: rtl;
    text-align: right;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #1e293b;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.footer-brand-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-logo-badge {
    background: #ffffff;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    flex-shrink: 0;
}

.footer-logo {
    height: 26px;
    width: 26px;
    object-fit: contain;
}

.footer-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: #f8fafc;
}

.footer-desc {
    color: #94a3b8;
    line-height: 1.5;
    max-width: 480px;
    font-size: 0.88rem;
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.footer-section-title {
    font-size: 1rem;
    font-weight: 600;
    color: #f8fafc;
    margin-bottom: 0.25rem;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links li a {
    color: #94a3b8;
    text-decoration: none;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
}

.footer-links li a:hover {
    color: #3b82f6;
    transform: translateX(-4px);
}

.footer-bottom {
    max-width: 1200px;
    margin: 1rem auto 0;
    text-align: center;
    color: #64748b;
    font-size: 0.8rem;
}

@media (max-width: 768px) {
    .footer-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* ==========================================================================
   Mobile Hamburger Menu Navigation
   ========================================================================== */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 0.4rem 0.6rem;
    border-radius: 8px;
}

.mobile-menu-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
}

@media (max-width: 640px) {
    .nav-container {
        position: relative !important;
        flex-direction: row !important;
        flex-wrap: wrap !important;
        justify-content: space-between !important;
        align-items: center !important;
        padding: 0.65rem 1rem !important;
        direction: rtl !important;
    }

    .mobile-menu-toggle {
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
    }

    .nav-menu {
        display: none !important;
        position: absolute !important;
        top: 100% !important;
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
        background: var(--bg-card, #ffffff) !important;
        box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18) !important;
        border-bottom: 1px solid var(--border-color) !important;
        border-top: 1px solid var(--border-color) !important;
        padding: 0.85rem 1rem !important;
        gap: 0.5rem !important;
        flex-direction: column !important;
        z-index: 10000 !important;
        box-sizing: border-box !important;
        margin-top: 0 !important;
    }

    .nav-menu.open {
        display: flex !important;
    }

    .nav-dropdown {
        width: 100% !important;
        position: relative !important;
        padding-bottom: 0 !important;
    }

    .nav-dropdown-btn {
        width: 100% !important;
        justify-content: space-between !important;
        display: flex !important;
        align-items: center !important;
        padding: 0.65rem 1rem !important;
        font-size: 0.92rem !important;
        border-radius: 8px !important;
        background: var(--bg-card) !important;
        border: 1px solid var(--border-color) !important;
        color: var(--text-primary) !important;
    }

    .nav-dropdown-content {
        position: static !important;
        display: none !important;
        box-shadow: none !important;
        border: none !important;
        background: transparent !important;
        padding: 0.25rem 0.5rem 0.25rem 0.75rem !important;
        opacity: 1 !important;
        visibility: visible !important;
        transform: none !important;
    }

    .nav-dropdown.active .nav-dropdown-content {
        display: block !important;
    }

    .nav-dropdown-content a {
        padding: 0.55rem 0.85rem !important;
        font-size: 0.88rem !important;
        border-radius: 6px !important;
        margin-bottom: 2px !important;
        display: block !important;
        color: var(--text-secondary) !important;
    }

    .nav-dropdown-content a:hover {
        color: var(--primary-color) !important;
        background: var(--bg-hover, rgba(59, 130, 246, 0.08)) !important;
    }

    .nav-btn {
        width: 100% !important;
        justify-content: center !important;
        padding: 0.65rem 1rem !important;
        font-size: 0.92rem !important;
        border-radius: 8px !important;
        box-sizing: border-box !important;
    }
}

/* ==========================================================================
   Category Dropdown Popover Component
   ========================================================================== */
.category-dropdown-wrapper {
    position: relative;
    flex-shrink: 0;
    direction: rtl;
    text-align: right;
}

.category-dropdown-container {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    z-index: 100;
    min-width: 220px;
    width: max-content;
    max-width: 320px;
    background: var(--bg-card, #ffffff);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    padding: 0.4rem 0;
    direction: rtl;
    text-align: right;
    box-sizing: border-box;
    overflow-x: hidden;
}

.category-dropdown-header {
    padding: 0.5rem 0.85rem;
    border-bottom: 1px solid var(--border-color);
    direction: rtl;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.category-dropdown-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.88rem;
    white-space: nowrap;
}

.clear-categories-btn {
    background: none;
    border: none;
    color: var(--accent-color, #3b82f6);
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 500;
    padding: 0;
    white-space: nowrap;
}

.categories-list {
    max-height: 250px;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.3rem 0;
    direction: rtl;
    text-align: right;
}

.category-item-row {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 0.6rem;
    padding: 0.45rem 0.85rem;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.92rem;
    user-select: none;
    direction: rtl;
    text-align: right;
    transition: background 0.15s ease;
}

.category-item-row:hover {
    background: var(--bg-hover, #f1f5f9);
}

.category-item-row input[type="checkbox"],
.category-checkbox {
    width: 16px !important;
    height: 16px !important;
    min-width: 16px !important;
    max-width: 16px !important;
    flex: none !important;
    margin: 0 !important;
    padding: 0 !important;
    box-shadow: none !important;
    background: transparent !important;
    border: none !important;
    display: inline-block !important;
    cursor: pointer;
    accent-color: var(--primary-color, #3b82f6);
}

.category-item-row span {
    text-align: right;
    direction: rtl;
    white-space: nowrap;
}

@media (max-width: 640px) {
    .filters-grid {
        grid-template-columns: 1fr !important;
        gap: 0.5rem !important;
    }

    .category-dropdown-wrapper {
        width: 100% !important;
    }

    #toggle-categories-btn {
        width: 100% !important;
    }

    .category-dropdown-container {
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
        min-width: 0 !important;
        max-width: 100% !important;
    }
}