:root {
    --primary-color: #1a2b3c;
    --secondary-color: #f4f7f9;
    --accent-color: #2a9d8f;
    --text-color: #333;
    --background-color: #ffffff;
    --shadow-subtle: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 10px 20px rgba(0, 0, 0, 0.1);
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Inter', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    transition: all 0.3s ease;
}

body {
    font-family: var(--font-primary);
    background-color: var(--secondary-color);
    color: var(--text-color);
    line-height: 1.6;
    letter-spacing: -0.02em;
}

.app-container {
    display: flex;
    height: 100vh;
    max-width: 1920px;
    margin: 0 auto;
    box-shadow: var(--shadow-subtle);
}

.sidebar {
    width: 280px;
    min-width: 280px;
    background-color: white;
    color: black;
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, width 0.3s ease;
    z-index: 100;
    /* Enable inner scrolling for nav, but keep footer pinned */
    max-height: 100vh;
    overflow: hidden;
}

.sidebar-nav {
    flex: 1 1 auto;
    overflow-y: auto;
    /* For smooth scrolling and no horizontal scroll */
    scrollbar-width: thin;
    scrollbar-color: #edf4f8 #fff;
    padding-right: 6px; /* small space for scrollbar */
}

.sidebar-nav::-webkit-scrollbar {
    width: 8px;
    background: #f2f6fa;
    border-radius: 6px;
}
.sidebar-nav::-webkit-scrollbar-thumb {
    background: #cef2ee;
    border-radius: 8px;
}
.sidebar-nav::-webkit-scrollbar-thumb:hover {
    background: #b0ebe1;
}

.sidebar-footer {
    text-align: center;  
    margin-top: auto;    
    padding: 15px;       
    font-size: 0.7rem;   
    color: rgba(0, 0, 0, 0.6); 
    flex-shrink: 0;
    /* Always at the bottom of sidebar */
    background: inherit;
}

.sidebar-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 30px;
}

.banner-logo {
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

.sidebar h2 {
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 30px;
    letter-spacing: -0.05em;
}

.sidebar-btn {
    width: 100%;
    text-align: left;
    padding: 12px 20px;
    margin-bottom: 10px;
    background: transparent;
    color: var(--primary-color);
    border: none;
    border-radius: 8px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.sidebar-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--accent-color);
}

.sidebar-btn.active {
    background: var(--accent-color);
    color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.main-content {
    flex-grow: 1;
    background-color: var(--background-color);
    overflow-y: auto;
    padding: 30px;
}

.add-product, .categories-management, .settings-management {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow-medium);
}

.inventory-management {
    background: transparent;
    padding: 0;
    box-shadow: none;
}

.add-product {
    gap: 15px;
    position: relative;
}

.image-preview-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    margin-bottom: 15px;
}

#imagePreview {
    border-radius: 8px;
    box-shadow: var(--shadow-subtle);
    object-fit: cover;
}

input, select, textarea {
    border: 2px solid rgba(0,0,0,0.1);
    font-family: var(--font-secondary);
    transition: all 0.3s ease;
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
}

input[type="file"] {
    border: 2px solid rgba(0,0,0,0.1);
    font-family: var(--font-secondary);
    transition: all 0.3s ease;
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.1);
    outline: none;
}

input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
}

button {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    margin-bottom: 10px;
}

h1, h2, h3 {
    font-family: var(--font-primary);
}

.stock-list {
    background-color: var(--secondary-color);
    padding: 20px;
    border-radius: 8px;
}

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

.stock-list th, .stock-list td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
    vertical-align: middle;
}

.product-name-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: none;
}

.product-image-small {
    width: 50px;
    height: 50px;
    object-fit: cover;
    border-radius: 4px;
    margin-right: 10px;
    vertical-align: middle;
}

.action-buttons button {
    margin: 0 5px;
    padding: 5px 10px;
}

.inventory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.inventory-item {
    border: 1px solid #ddd;
    padding: 15px;
    border-radius: 8px;
    background-color: white;
    display: flex;
    flex-direction: column;
}

.inventory-item .product-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    margin-bottom: 10px;
}

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

.inventory-controls {
    margin-bottom: 20px;
    background: none;
    padding: 0;
    border: none;
    box-shadow: none;
}

.inventory-controls button {
    display: flex;
    align-items: center;
    gap: 10px;
}

.inventory-controls i {
    margin-right: 5px;
}

.categories-management {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow-medium);
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

#categoriesList {
    width: 100%;
    border-collapse: collapse;
}

#categoriesList table {
    width: 100%;
    border-collapse: collapse;
}

#categoriesList th, #categoriesList td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
    vertical-align: middle;
}

#categoriesList th {
    background-color: var(--secondary-color);
    font-weight: 600;
}

#categoriesList table td.product-count {
    text-align: center;
    color: var(--accent-color);
    font-weight: 500;
}

#categoriesList table .category-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
}

#categoriesList table .category-actions button {
    padding: 5px 10px;
    font-size: 0.8em;
}

.categories-management .add-category {
    margin-bottom: 20px;
    display: flex;
    gap: 15px;
}

.categories-management .add-category input {
    flex-grow: 1;
}

.category-actions {
    display: flex;
    gap: 10px;
}

.category-actions button {
    padding: 5px 10px;
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--accent-color);
}

.category-actions button.delete-category {
    color: #ff4d4d;
    border-color: #ff4d4d;
}

.settings-management {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow-medium);
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.settings-management .location-settings-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #f0f0f0;
}

.setting-option {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.setting-option input[type="checkbox"] {
    margin-right: 10px;
    width: auto;
}

.backup-section, .import-section {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.backup-section h2, .import-section h2 {
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 10px;
    margin-bottom: 15px;
}

#importBackupFile {
    margin-bottom: 10px;
}

.section-header {
    margin-bottom: 30px;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 15px;
}

.section-header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.section-header p {
    color: rgba(0,0,0,0.6);
    font-size: 0.9rem;
}

#inventoryView table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    box-shadow: var(--shadow-medium);
    border-radius: 8px;
    overflow: hidden;
}

#inventoryView th, #inventoryView td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
    vertical-align: middle;
}

.inventory-table {
    margin-top: 15px;
    border-spacing: 0;
    overflow-x: auto;
    display: block;
    width: 100%;
}

.inventory-table th {
    background-color: var(--accent-color);
    color: white;
    font-weight: 500;
    padding: 12px 15px;
    white-space: nowrap;
}

.inventory-table tbody tr {
    transition: background-color 0.2s;
}

.inventory-table tbody tr:nth-child(even) {
    background-color: #f8f8f8;
}

.inventory-table tbody tr:hover {
    background-color: #eaf7f6;
}

.product-name-cell {
    border-right: none !important;
}

.product-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.product-name {
    font-weight: 500;
}

.product-image-small {
    width: 50px;
    height: 50px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.negative-quantity {
    color: #ff4d4d;
    font-weight: bold;
}

.migration-error {
    background-color: #fff5f5;
    border-left: 5px solid #f44336;
    padding: 15px;
    margin-top: 20px;
    margin-bottom: 20px;
    border-radius: 5px;
}

.migration-error h3 {
    color: #f44336 !important;
    margin-bottom: 10px;
}

.error-details {
    font-size: 0.9em;
    line-height: 1.5;
}

.error-details ul {
    margin-left: 20px;
}

.error-details strong {
    font-weight: 600;
}

.location-item {
    background: #f8f8f8;
    padding: 5px 8px;
    border-radius: 4px;
    margin-bottom: 5px;
}

.no-location {
    color: #999;
    font-style: italic;
}

.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 15px;
    left: 15px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 10px;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 99;
}

/* Animation and Professional UI Enhancements */
.sidebar-btn, .dashboard-card, .inventory-item, button, .select-categories-btn, input[type="submit"] {
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease;
}

.sidebar-btn:hover, .dashboard-card:hover, button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.sidebar-btn:active, button:active:not(:disabled) {
    transform: translateY(1px);
}

.section {
    animation: fadeIn 0.4s ease-out;
}

.section.hidden {
    display: none;
    animation: none;
}

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

/* Mobile Layout Optimization */
@media (max-width: 1080px) {
    .app-container {
        flex-direction: column !important;
        min-width: 0 !important;
        width: 100vw !important;
        max-width: unset !important;
        height: auto !important;
    }
    .sidebar {
        position: fixed;
        left: -260px;
        top: 0;
        width: 72vw !important;
        min-width: 180px !important;
        max-width: 340px;
        height: 100vh;
        z-index: 2200;
        padding: 14px 5px !important;
        transition: left 0.35s cubic-bezier(.25,.8,.25,1), box-shadow 0.2s;
        background: #fff;
    }
    .sidebar.open {
        left: 0 !important;
        box-shadow: 0 0 22px rgba(0,0,0,0.18);
        z-index: 2300;
    }
    .sidebar-logo {
        margin-bottom: 24px;
    }
    .main-content {
        padding: 8px !important;
        margin-left: 0 !important;
        margin-top: 0 !important;
        max-width: 100vw !important;
        width: 100vw !important;
    }
    .banner-logo { 
        max-height: 50px !important;
        margin: 0 auto;
        display:block;
    }

    /* Hide actual overflow when sidebar is open */
    body.mobile-sidebar-open {
        overflow: hidden;
    }
    .sidebar-overlay {
        display: none !important;
    }
    .sidebar-overlay.show {
        display: block !important;
        position: fixed !important;
        z-index: 2100;
        width: 100vw; height: 100vh;
        top: 0; left: 0;
        background: rgba(0,0,0,0.36);
        transition: opacity 0.23s;
    }
    .mobile-menu-toggle {
        display: block !important;
        position: fixed;
        top: 13px;
        left: 16px;
        background: var(--accent-color);
        color: white;
        border: none;
        border-radius: 6px;
        padding: 10px;
        z-index: 2500;
        box-shadow: 0 2px 8px rgba(0,0,0,0.11);
        width: 43px;
        height: 43px;
        font-size: 1.5em;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .sidebar-btn {
        font-size: .95em !important;
        padding: 10px 17px !important;
        min-height: 38px;
        border-radius: 8px;
    }
    .sidebar-btn i { font-size:1.2em; }
    .sidebar-footer {
        font-size: .65em !important;
        padding: 8px 2px !important;
    }
    .add-product, .categories-management, .settings-management, .dashboard-card {
        padding: 8px !important;
        border-radius: 9px;
    }
    .section-header {
        margin-bottom: 18px !important;
        padding-bottom: 8px !important;
    }
    .dashboard-grid {
        grid-template-columns: 1fr !important;
        gap: 6px !important;
        padding: 3px !important;
    }
    /* More compact selection input for mobile */
    select, input, textarea {
        font-size: 1em !important;
        padding: 9px !important;
    }
}

@media (max-width: 900px) {
    /* Base layout adjustments */
    body {
        background: #f5f7fa !important;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    
    .app-container {
        flex-direction: column !important;
        width: 100vw !important;
        height: auto !important;
        box-shadow: none !important;
    }
    
    /* Enhanced Sidebar */
    .sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        width: 84vw !important;
        height: 100vh;
        z-index: 2500 !important;
        background: linear-gradient(135deg, #1e2a3a 0%, #101a26 100%) !important;
        color: #fff;
        box-shadow: 0 0 35px rgba(0,0,0,0.3) !important;
        transition: left 0.4s cubic-bezier(0.19, 1, 0.22, 1) !important;
        padding: 12px 0 !important;
        overflow: hidden !important;
        max-height: 100vh !important;
    }
    
    .sidebar.open {
        left: 0 !important;
    }
    
    .sidebar-nav {
        overflow-y: auto !important;
        max-height: 85vh !important;
    }
    
    .sidebar-logo {
        margin: 5px auto 20px;
        width: 90%;
        display: flex;
        justify-content: center;
        align-items: center;
        padding-bottom: 15px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    
    .banner-logo {
        max-height: 46px !important;
        filter: drop-shadow(0 2px 5px rgba(0,0,0,0.3));
    }
    
    .sidebar-btn {
        background: transparent !important;
        color: #fff !important;
        font-size: 0.95em !important;
        padding: 14px 20px !important;
        margin: 4px 10px !important;
        border-radius: 10px !important;
        display: flex;
        align-items: center;
        gap: 14px;
        letter-spacing: 0.01em;
        transition: all 0.25s ease;
        border-left: 4px solid transparent !important;
        box-shadow: none !important;
    }
    
    .sidebar-btn i {
        font-size: 1.25em;
        min-width: 22px;
        text-align: center;
        color: rgba(255,255,255,0.7);
        transition: color 0.25s ease;
    }
    
    .sidebar-btn.active {
        background: rgba(42, 157, 143, 0.15) !important;
        border-left: 4px solid var(--accent-color) !important;
        color: #fff !important;
    }
    
    .sidebar-btn.active i {
        color: var(--accent-color);
    }
    
    .sidebar-btn:active {
        background: rgba(42, 157, 143, 0.25) !important;
    }
    
    .sidebar-footer {
        margin-top: 20px;
        padding: 15px 0;
        font-size: 0.75em !important;
        color: rgba(255,255,255,0.4);
        text-align: center;
        border-top: 1px solid rgba(255,255,255,0.08);
    }
    
    /* Main content area */
    .main-content {
        padding: 70px 12px 24px !important;
        margin-left: 0 !important;
        background: #f5f7fa !important;
        min-height: 100vh;
    }
    
    /* Stylish section header */
    .section-header {
        margin-bottom: 16px !important;
        border-bottom: none !important;
        background: transparent !important;
        padding: 0 !important;
    }
    
    .section-header h1 {
        font-size: 1.5em !important;
        font-weight: 700 !important;
        color: #1a2b3c;
        margin-bottom: 6px !important;
        opacity: 0.9;
    }
    
    .section-header p {
        font-size: 0.9em !important;
        color: #5c6b7e !important;
        opacity: 0.85;
        font-weight: 400;
    }
    
    /* Section containers */
    .add-product, 
    .categories-management, 
    .settings-management, 
    .dashboard-card, 
    .sell-stock-container, 
    .sell-records-container, 
    .price-list-container,
    .fast-add-remove-container,
    .inventory-filter-container {
        border-radius: 16px !important;
        padding: 16px 14px !important;
        box-shadow: 0 5px 15px rgba(0,0,0,0.05) !important;
        margin-bottom: 16px;
        border: 1px solid rgba(0,0,0,0.03);
        background: #fff !important;
        transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    
    /* Form elements */
    input, select, textarea {
        padding: 14px 12px !important;
        font-size: 1em !important;
        border-radius: 12px !important;
        border: 1.5px solid rgba(0,0,0,0.08) !important;
        background: #f8fafc !important;
        transition: all 0.25s ease !important;
        box-shadow: inset 0 1px 3px rgba(0,0,0,0.05);
    }
    
    input:focus, select:focus, textarea:focus {
        border-color: var(--accent-color) !important;
        background: #fff !important;
        box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.1), inset 0 1px 2px rgba(0,0,0,0.03) !important;
    }
    
    /* Buttons */
    button:not(.sidebar-btn):not(.mobile-menu-toggle) {
        border-radius: 12px !important;
        font-weight: 600 !important;
        padding: 14px 12px !important;
        font-size: 1em !important;
        letter-spacing: 0.01em;
        box-shadow: 0 3px 8px rgba(0,0,0,0.12) !important;
        transition: all 0.25s ease !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        gap: 10px !important;
    }
    
    button:not(.sidebar-btn):not(.mobile-menu-toggle):active {
        transform: translateY(1px) !important;
        box-shadow: 0 1px 2px rgba(0,0,0,0.12) !important;
    }
    
    /* Mobile menu toggle */
    .mobile-menu-toggle {
        display: block !important;
        position: fixed;
        top: 12px;
        left: 12px;
        background: #fff !important;
        color: var(--primary-color) !important;
        border: none;
        width: 46px;
        height: 46px;
        border-radius: 14px !important;
        font-size: 1.3em;
        display: flex !important;
        align-items: center;
        justify-content: center;
        z-index: 2000;
        box-shadow: 0 4px 12px rgba(0,0,0,0.1) !important;
        transition: all 0.25s ease;
    }
    
    .mobile-menu-toggle:active {
        transform: scale(0.95);
    }
    
    .sidebar-overlay {
        background: rgba(0,0,0,0.5) !important;
        backdrop-filter: blur(3px);
        -webkit-backdrop-filter: blur(3px);
    }
    
    /* Inventory table */
    .inventory-table {
        border-radius: 12px;
        overflow: hidden;
        box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    }
    
    .inventory-table th {
        background: var(--accent-color) !important;
        padding: 12px 8px !important;
        font-weight: 600 !important;
        font-size: 0.9em !important;
        color: white !important;
        text-transform: uppercase;
        letter-spacing: 0.03em;
    }
    
    .inventory-table td {
        padding: 12px 8px !important;
        font-size: 0.95em !important;
        border-bottom: 1px solid rgba(0,0,0,0.05);
        vertical-align: middle;
    }
    
    .product-image-small {
        width: 48px !important;
        height: 48px !important;
        border-radius: 10px !important;
        object-fit: cover;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    
    /* Dashboard cards */
    .dashboard-card {
        padding: 18px 15px !important;
        border-radius: 18px !important;
        box-shadow: 0 10px 20px rgba(0,0,0,0.06) !important;
        border-left: 5px solid var(--accent-color) !important;
    }
    
    .dashboard-card h3 {
        font-size: 1.15em !important;
        padding-bottom: 12px !important;
        margin-bottom: 12px !important;
        border-bottom: 2px solid rgba(42, 157, 143, 0.15) !important;
    }
    
    /* Filter components */
    .select-categories-btn, .print-inventory-btn {
        background: var(--accent-color) !important;
        color: white !important;
        border-radius: 12px !important;
        padding: 12px 16px !important;
        margin-bottom: 12px;
        box-shadow: 0 4px 10px rgba(42, 157, 143, 0.2) !important;
    }
    
    /* Search inputs */
    .search-filter input {
        border-radius: 12px !important;
        padding: 14px 12px !important;
    }
    
    /* Enhanced animation for modal */
    .modal-content {
        animation: modalSlideIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
        border-radius: 18px !important;
        padding: 20px 15px !important;
        box-shadow: 0 15px 30px rgba(0,0,0,0.15) !important;
    }
    
    @keyframes modalSlideIn {
        from { transform: scale(0.95); opacity: 0; }
        to { transform: scale(1); opacity: 1; }
    }
    
    /* Login components */
    .login-content {
        border-radius: 20px !important;
        box-shadow: 0 20px 40px rgba(0,0,0,0.2) !important;
    }
    
    .login-buttons button {
        border-radius: 14px !important;
        padding: 16px !important;
        font-size: 1.1em !important;
    }
    
    /* Date inputs & filters */
    .date-range-filter {
        background: rgba(0,0,0,0.02);
        border-radius: 12px;
        padding: 14px !important;
        margin-bottom: 12px;
    }
    
    .date-input-group {
        margin-bottom: 10px !important;
    }
    
    .date-input-group label {
        display: block;
        margin-bottom: 5px;
        font-weight: 500;
        color: #566074;
    }
    
    input[type="date"] {
        width: 100% !important;
    }
    
    /* Settings section */
    .settings-management h2 {
        font-size: 1.2em !important;
        color: #1a2b3c;
        margin-bottom: 12px;
        padding-bottom: 6px;
        border-bottom: 1px solid rgba(0,0,0,0.07);
    }
    
    /* Location items */
    .location-item {
        background: #f0f7f6 !important;
        border: 1px solid rgba(42, 157, 143, 0.15);
        padding: 8px 12px !important;
        border-radius: 8px !important;
        margin-bottom: 8px !important;
        font-size: 0.9em !important;
    }
    
    /* Enhanced scrollbar */
    .modal-body::-webkit-scrollbar,
    .inventory-table::-webkit-scrollbar,
    .price-list-table::-webkit-scrollbar,
    .sell-records-table::-webkit-scrollbar {
        width: 8px;
        height: 8px;
    }
    
    .modal-body::-webkit-scrollbar-track,
    .inventory-table::-webkit-scrollbar-track,
    .price-list-table::-webkit-scrollbar-track,
    .sell-records-table::-webkit-scrollbar-track {
        background: rgba(0,0,0,0.03); 
        border-radius: 8px;
    }
    
    .modal-body::-webkit-scrollbar-thumb,
    .inventory-table::-webkit-scrollbar-thumb,
    .price-list-table::-webkit-scrollbar-thumb,
    .sell-records-table::-webkit-scrollbar-thumb {
        background: rgba(42, 157, 143, 0.4);
        border-radius: 8px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 85vw !important;
        left: -100vw;
        box-shadow: 0 0 25px rgba(0,0,0,0.25) !important;
        z-index: 2300 !important;
    }
    
    .sidebar.open {
        left: 0 !important;
    }

    .sidebar-btn {
        margin-bottom: 12px !important;
        padding: 14px 18px !important;
        border-radius: 10px !important;
        font-size: 1.1em !important;
    }
    
    .section-header {
        padding: 10px !important;
        margin-bottom: 14px !important;
        background: #fff;
        border-radius: 10px;
        box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    }
    
    .section-header h1 {
        font-size: 1.4em !important;
    }
    
    .mobile-menu-toggle {
        top: 10px !important;
        left: 10px !important;
        padding: 12px !important;
        box-shadow: 0 3px 10px rgba(0,0,0,0.15) !important;
        border-radius: 50% !important;
        width: 50px !important;
        height: 50px !important;
        font-size: 1.5em;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    @keyframes pulse {
        0% { box-shadow: 0 0 0 0 rgba(42, 157, 143, 0.4); }
        70% { box-shadow: 0 0 0 10px rgba(42, 157, 143, 0); }
        100% { box-shadow: 0 0 0 0 rgba(42, 157, 143, 0); }
    }
    
    .add-product, .categories-management, .sell-stock-container, .dashboard-card {
        border-radius: 12px !important;
        padding: 14px !important;
        margin-bottom: 15px !important;
        box-shadow: 0 4px 15px rgba(0,0,0,0.08) !important;
    }
    
    input, select, textarea {
        font-size: 16px !important; /* Prevent auto-zoom on iOS */
        padding: 12px !important;
        border-radius: 8px !important;
        margin-bottom: 12px !important;
    }
    
    button:not(.sidebar-btn):not(.mobile-menu-toggle) {
        padding: 14px !important;
        border-radius: 8px !important;
        font-weight: 500 !important;
        width: 100% !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        gap: 8px !important;
        box-shadow: 0 3px 10px rgba(0,0,0,0.1) !important;
    }
    
    .inventory-table thead {
        position: sticky;
        top: 0;
        z-index: 10;
    }
    
    .inventory-filter-container {
        background: white !important;
        padding: 14px !important;
        border-radius: 12px !important;
        box-shadow: 0 2px 10px rgba(0,0,0,0.08) !important;
    }
}

@media (max-width: 480px) {
    .sidebar {
        width: 85vw !important;
    }
    
    .sidebar-btn {
        padding: 12px 15px !important;
    }
    
    .section-header h1 {
        font-size: 1.3em !important;
    }
    
    .price-list-table th, .price-list-table td, 
    .sell-records-table th, .sell-records-table td,
    .inventory-table th, .inventory-table td {
        padding: 6px 4px !important;
        font-size: 0.9em !important;
    }
}

@media (max-width: 900px) {
    /* Fix for mobile tables (categories and inventory) that overflow the screen */
    #categoriesList table, 
    #inventoryView table,
    .inventory-table,
    .category-modern-table,
    .sell-records-table table,
    .price-list-table {
        display: block;
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        max-width: 100vw;
        margin: 0;
        border-radius: 12px;
    }
    
    /* Ensure td/th content wraps properly */
    #categoriesList table td, 
    #categoriesList table th,
    #inventoryView table td, 
    #inventoryView table th,
    .category-modern-table td,
    .category-modern-table th {
        white-space: normal;
        min-width: 70px;
        word-break: break-word;
    }
    
    /* Better scroll experience */
    .inventory-table::-webkit-scrollbar,
    .category-modern-table::-webkit-scrollbar {
        height: 6px;
    }
    
    .inventory-table::-webkit-scrollbar-track,
    .category-modern-table::-webkit-scrollbar-track {
        background: rgba(0,0,0,0.05);
        border-radius: 3px;
    }
    
    .inventory-table::-webkit-scrollbar-thumb,
    .category-modern-table::-webkit-scrollbar-thumb {
        background: rgba(42, 157, 143, 0.4);
        border-radius: 3px;
    }
    
    /* Ensure tables stay within container */
    .categories-management,
    .inventory-management {
        overflow-x: hidden;
        width: 100%;
        max-width: 100%;
        padding: 10px 5px !important;
    }
    
    /* More compact action buttons */
    .category-actions {
        display: flex;
        flex-direction: column;
        gap: 5px;
    }
    
    .category-actions button {
        padding: 4px 6px !important;
        font-size: 0.85em !important;
        white-space: nowrap;
        width: 100%;
    }
    
    /* Adjust action buttons in inventory */
    #inventoryView .action-buttons,
    .inventory-table .action-buttons {
        min-width: 80px;
    }
    
    #inventoryView .action-buttons button,
    .inventory-table .action-buttons button {
        padding: 6px 8px !important;
        font-size: 0.85em !important;
        white-space: nowrap;
        width: 100%;
        margin-bottom: 5px;
    }
    
    /* Indication that table is scrollable */
    .categories-management::after,
    .inventory-management::after {
        content: "⟷ Scroll horizontally if needed";
        display: block;
        text-align: center;
        font-size: 0.8em;
        color: #666;
        padding: 5px 0;
        opacity: 0.7;
    }
}

@media (max-width: 480px) {
    .category-modern-table th,
    .category-modern-table td,
    #inventoryView th,
    #inventoryView td {
        padding: 6px 4px !important;
        font-size: 0.9em !important;
    }
    
    .product-name-cell {
        max-width: 120px;
    }
    
    /* Simplified category table on mobile */
    .category-modern-table td:nth-child(3) {
        max-width: 40px;
        text-align: center;
    }
}

.print-inventory-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-size: 0.9rem;
}

.print-inventory-btn:hover {
    background-color: #258f80;
}

.print-inventory-btn i {
    margin-right: 5px;
}

.category-checkbox-container {
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 10px;
    max-height: 200px;
    overflow-y: auto;
}

.all-categories-checkbox {
    margin-bottom: 10px;
    border-bottom: 1px solid #f0f0f0;
    padding-bottom: 10px;
}

.category-checkboxes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 5px;
}

.category-checkbox {
    display: flex;
    align-items: center;
    gap: 5px;
}

.category-checkbox input[type="checkbox"] {
    margin: 0;
}

.mode-toggle-panel {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    margin-bottom: 16px;
}

.mode-toggle-status {
    padding: 6px 15px;
    border-radius: 13px;
    background: #e3f7e9;
    color: #16713d;
    font-weight: bold;
    font-size: 1em;
}

.mode-toggle-status.test-mode {
    background: #ffebe2;
    color: #d45709;
}

.mode-toggle-status.live-mode {
    background: #e3f7e9;
    color: #16713d;
}

.mode-toggle-switch {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    background: #eaf7f6;
    border: 1.5px solid #13a097;
    border-radius: 18px;
    padding: 4px 15px;
    font-size: 1em;
}

.mode-toggle-switch label {
    font-weight: 600;
    margin-right: 7px;
    color: #135d7a;
}

.mode-toggle-switch input[type="checkbox"] {
    accent-color: #11907f;
    width: 17px;
    height: 17px;
    margin: 0 4px 0 0;
    cursor:pointer;
}

.mode-toggle-warning {
    color:#cf3e06;
    font-size:0.98em;
    padding: 0 3px;
    margin: 0 0 0 16px;
}

@media (max-width:600px) {
    .mode-toggle-panel {flex-direction: column;justify-content:flex-start;}
    .mode-toggle-switch{font-size:0.96em;}
}

.bulk-delete-controls {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 12px;
    margin-top: 8px;
}

.bulk-delete-controls input[type="checkbox"] {
    margin-right: 7px;
}

.bulk-inventory-delete-btn {
    background: #f44336;
    color: #fff;
    border-radius: 7px;
    padding: 8px 22px;
    font-weight: 600;
    border: none;
    transition: background 0.18s;
    font-size: 1.02em;
    margin-left: 3px;
    outline: none;
}
.bulk-inventory-delete-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.bulk-inventory-delete-btn:hover:not(:disabled) {
    background: #b71c1c;
}
.bulk-delete-warning {
    color: #b30000;
    font-size: 0.95em;
    margin-top: 5px;
    font-weight: bold;
    letter-spacing: 0.01em;
}

.bulk-select-checkbox {
    width: 22px;
    height: 22px;
    accent-color: #e51818;
    vertical-align: middle;
}

.sidebar-footer {
    text-align: center;  
    margin-top: auto;    
    padding: 15px;       
    font-size: 0.7rem;   
    color: rgba(0, 0, 0, 0.6); 
}

.hidden {
    display: none;
}

.section-header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.reset-all-section {
    background: #fff4f4;
    border-radius: 8px;
    padding: 18px 15px;
    margin-top: 15px;
    box-shadow: 0 2px 8px rgba(255,0,0,0.09);
    border: 1.5px solid #edcfd0;
}

.reset-all-section h2 {
    color: #c72915;
    margin-bottom: 10px;
}

#resetAllDataBtn {
    background: #f44336;
    color: #fff;
    border: none;
    border-radius: 5px;
    padding: 10px 26px;
    margin-top: 5px;
    font-weight: bold;
    font-size: 1em;
    box-shadow: 0 4px 8px rgba(255,0,0,0.07);
    transition: background 0.12s;
}

#resetAllDataBtn:hover,
#resetAllDataBtn:focus {
    background: #b71c1c;
}

.reset-all-section .reset-description {
    margin-top: 7px;
    color: #b30000;
    font-size: 0.96em;
}

@media (max-width: 600px) {
    .reset-all-section {
        padding: 10px 5px;
        font-size: .95em;
    }
    #resetAllDataBtn {
        padding: 9px 8px;
        font-size: 0.97em;
    }
}

@media (max-width: 700px) {
    html, body {
        font-size: 110%;
        background: #f5f6fa !important;
    }
    .app-container {
        flex-direction: column !important;
        min-width: 0 !important;
        width: 100vw !important;
        max-width: unset !important;
        height: auto !important;
        box-shadow: none !important;
        margin: 0 !important;
        border-radius: 0 !important;
    }
    .sidebar {
        position: fixed;
        left: -98vw;
        top: 0;
        width: 97vw !important;
        min-width: 0 !important;
        max-width: 99vw;
        background: #191d23 !important;
        color: #fff;
        box-shadow: 0 2px 29px rgba(0,0,0,0.2) !important;
        padding: 16px 5px !important;
        z-index: 2900;
    }
    .sidebar.open { left: 0 !important; }
    .sidebar-logo .banner-logo {
        max-height: 40px !important;
        width:auto;
    }
    .sidebar-btn {
        color: #fff !important;
        background: transparent !important;
        border: none !important;
        font-size: 1.12em !important;
        padding: 11px 13px !important;
        margin-bottom: 7px !important;
        border-radius: 8px !important;
        display: flex;
        align-items:center;
        gap:11px;
        transition: background 0.1s;
    }
    .sidebar-btn i { font-size:1.15em; }
    .sidebar-btn.active {
        background: #2a9d8f !important;
        color: #fff !important;
        box-shadow: 0 1.5px 8px rgba(0,0,0,0.19);
    }
    .sidebar-footer {
        font-size: .71em !important;
        color: #aaa;
        margin-top: 10px;
        text-align: center;
    }

    .main-content {
        background: #f7f7fa !important;
        padding: 7px !important;
    }
    .add-product,
    .categories-management,
    .settings-management,
    .dashboard-card,
    .inventory-filter-container,
    .sell-stock-container,
    .sell-records-container,
    .price-list-container,
    .fast-add-remove-container {
        border-radius: 14px !important;
        padding: 8px 4px !important;
        margin-bottom:11px;
        box-shadow: 0 2px 7px rgba(0,0,0,0.14);
    }
    .print-inventory-btn,
    .select-categories-btn {
        width: 100%;
        font-size: 1.1em;
        padding: 10px 8px;
    }
    input, select, textarea {
        font-size: 1.12em;
        padding: 13px 8px !important;
        border-radius: 6px;
    }
    .inventory-table, .price-list-table, .sell-records-table table {
        font-size: 1.11em;
        border-radius: 12px;
    }
    .dashboard-card h3 { font-size:1.15em;padding-bottom:4px;margin-bottom:7px;}
    .sidebar-footer {
        font-size: .8em !important;
        color: #aaa;
    }
    /* Hide desktop-only edit/remove buttons, except edit location for desktop only */
    .action-buttons button:not([onclick*="showEditLocationModal"]) {
        display: none !important;
    }
    .action-buttons button[onclick*="showEditLocationModal"] {
        width:98%;margin:0 auto;
        background: #1986e6;
        font-size:1em;
        padding:8px 0;
        display:block !important;
    }
}

@media (max-width: 480px) {
    .sidebar {
        min-width: 0 !important;
        width: 99vw !important;
        left: -110vw;
    }
    .sidebar.open { left: 0 !important; }
    .sidebar-btn, .main-content, .inventory-table th, .inventory-table td {
        font-size: 1.08em !important;
    }
    .add-product, .categories-management, .settings-management,
    .dashboard-card, .inventory-filter-container, .sell-stock-container,
    .sell-records-container, .price-list-container, .fast-add-remove-container {
        border-radius: 8px !important;
        padding: 4px 2px !important;
    }
    .sidebar-footer { font-size: .6em !important;}
    /* Simulate mobile app effect more */
    .modal-content { 
        width: 97vw !important;
        max-width: none !important;
    }
}

#updatesNotesUnlockModal {
    position: fixed;
    z-index: 12000;
    left: 0; top: 0; width: 100vw; height: 100vh;
    background: rgba(0,0,0,0.37);
    display: flex;
    align-items: center;
    justify-content: center;
}

#updatesNotesUnlockBox {
    background: white;
    border-radius: 14px;
    padding: 32px 24px 19px 24px;
    box-shadow: 0 6px 20px rgba(24,41,92,0.18);
    max-width: 375px;
    width: 98vw;
    text-align: center;
    position: relative;
}

#updatesNotesUnlockBox h2 {
    font-size: 1.1em;
    font-weight: 700;
    color: var(--accent-color);
    letter-spacing: 0.02em;
    margin-bottom: 18px;
}

#updatesNotesUnlockBox input[type="password"] {
    width: 96%;
    padding: 11px 12px;
    border-radius: 8px;
    border: 1.5px solid #aaa;
    margin-bottom: 17px;
    font-size: 1.11em;
}

#updatesNotesUnlockBox .unlock-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
}

#updatesNotesUnlockBox button {
    padding: 10px 19px;
    border-radius: 8px;
    border: none;
    font-size: 1em;
    font-weight: 600;
    background: var(--accent-color);
    color: #fff;
    margin: 0 4px;
    cursor: pointer;
    transition: background 0.2s;
}

#updatesNotesUnlockBox button.cancel {
    background: #eee;
    color: #444;
}

#updatesNotesUnlockBox .unlock-error {
    color: #c0431b;
    font-size:0.99em;
    min-height: 20px;
    margin: 7px auto 0 auto;
}

/* === BULK EDIT POPUP FOR INVENTORY === */
.bulk-edit-modal-bg {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background: rgba(18,22,24,0.22);
    z-index: 17000;
    display: flex; align-items: center; justify-content: center;
}
.bulk-edit-modal {
    background: white;
    border-radius: 16px;
    padding: 22px 14px 18px 14px;
    min-width: 315px;
    max-width: 96vw;
    box-shadow: 0 7px 35px rgba(0,0,0,0.21);
    animation: fadeIn .22s;
}
.bulk-edit-modal h2 {
    font-size: 1.22em;
    font-weight: bold;
    color: #2a7a67;
    margin-bottom: 13px;
    letter-spacing:0.02em;
}
.bulk-edit-table-wrapper {
    max-height: 370px;
    overflow-y: auto;
    margin:0 0 19px 0;
}
.bulk-edit-table {
    width: 100%;
    border-collapse: collapse;
    background: #fafdff;
    margin-bottom: 0;
}
.bulk-edit-table th, .bulk-edit-table td {
    border: 1px solid #e1e7ee;
    padding: 7px 8px;
    font-size: 1em;
    text-align: left;
    vertical-align: middle;
    white-space: normal;
}
.bulk-edit-table th {
    background: #e8f7f6;
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 1;
}
.bulk-edit-table input, .bulk-edit-table select {
    width: 99%;
    padding: 6px 7px;
    border-radius: 6px;
    border: 1px solid #e3efeb;
    background: #f6fcfa;
    font-size: 0.98em;
}
.bulk-edit-table input[type=file] {
    background: none;
}
.bulk-edit-modal .bulk-edit-controls {
    display: flex;
    align-items: center;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 14px;
}
.bulk-edit-modal .bulk-edit-controls button {
    padding: 9px 19px;
    border-radius: 8px;
    border: none;
    background: var(--accent-color);
    color: #fff;
    font-size:1em;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.22s;
}
.bulk-edit-modal .bulk-edit-controls .cancel-btn {
    background: #e9e9ed;
    color: #2c3d41;
}
.bulk-edit-modal .bulk-edit-error {
    color: #d42b17;
    font-size:1em;
    padding: 2px 0 5px 0;
    min-height: 10px;
}
/* Images column in table */
.bulk-edit-img-preview {
    max-width:48px; max-height:48px; border-radius:7px;
    box-shadow:0 2px 7px rgba(0,0,0,0.07);
}

@media screen and (max-width: 700px) {
    .bulk-edit-modal-bg { padding:0 2vw;}
    .bulk-edit-modal { padding:10px 3px 10px 3px;}
    .bulk-edit-table-wrapper { max-height:260px;}
    .bulk-edit-table th, .bulk-edit-table td { padding:6px 3px;font-size:0.99em;}
    .bulk-edit-table input, .bulk-edit-table select { font-size: 0.97em; padding:4px 5px;}
}

#bulkEditInventoryBtn, .bulk-edit-btn {
    background: #187ac0 !important;
    color: #fff !important;
    padding: 8px 18px;
    border-radius: 7px;
    margin-right: 8px;
    border: none;
    font-weight: bold;
    transition: background 0.2s;
}
#bulkEditInventoryBtn:hover, .bulk-edit-btn:hover {
    background: #135287 !important;
}