/* Modern Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Courier+Prime&display=swap');

/* Core Theme System & HSL Variables */
:root {
    --font-sans: 'Outfit', sans-serif;
    --font-mono: 'Courier Prime', monospace;
    
    /* Elegant Slate & Dark Hues */
    --bg-main: #0f172a;          /* Slate 900 */
    --bg-card: #1e293b;          /* Slate 800 */
    --bg-input: #334155;         /* Slate 700 */
    --border-color: #475569;     /* Slate 600 */
    
    /* Vibrant Color Accents */
    --primary: #10b981;          /* Emerald 500 */
    --primary-hover: #059669;    /* Emerald 600 */
    --primary-bg: rgba(16, 185, 129, 0.1);
    
    --warning: #f59e0b;          /* Amber 500 */
    --warning-bg: rgba(245, 158, 11, 0.1);
    
    --danger: #ef4444;           /* Red 500 */
    --danger-hover: #dc2626;     /* Red 600 */
    --danger-bg: rgba(239, 68, 68, 0.1);
    
    --info: #3b82f6;             /* Blue 500 */
    --info-bg: rgba(59, 130, 246, 0.1);
    
    --text-main: #f8fafc;        /* Slate 50 */
    --text-muted: #94a3b8;       /* Slate 400 */
    
    /* UI Sizing */
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Light Mode Theme Overrides (Modeled after POS Tablet Reference Image) */
[data-theme="light"] {
    --bg-main: #f1f5f9;          /* Soft Slate 100 Page BG */
    --bg-card: #ffffff;          /* Pure White Cards & Panels */
    --bg-input: #f8fafc;         /* Slate 50 Input BG */
    --border-color: #cbd5e1;     /* Slate 300 Crisp Borders */
    
    --primary: #0284c7;          /* Sky / Ocean Blue Accent */
    --primary-hover: #0369a1;    
    --primary-bg: rgba(2, 132, 199, 0.1);
    
    --warning: #d97706;          /* Amber 600 */
    --warning-bg: rgba(217, 119, 6, 0.1);
    
    --danger: #ef4444;           /* Red 500 */
    --danger-hover: #dc2626;     
    --danger-bg: rgba(239, 68, 68, 0.1);
    
    --info: #0284c7;             /* Sky 600 */
    --info-bg: rgba(2, 132, 199, 0.1);
    
    --text-main: #0f172a;        /* Slate 900 High Contrast Text */
    --text-muted: #64748b;       /* Slate 500 Muted Text */
    
    --shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
}

/* Light Mode Header Styling (Ocean Blue Bar matching reference image) */
[data-theme="light"] .pos-header,
[data-theme="light"] .admin-header {
    background: linear-gradient(135deg, #0284c7, #0369a1);
    border-bottom: 1px solid #0284c7;
    color: #ffffff;
}

[data-theme="light"] .pos-logo,
[data-theme="light"] .admin-logo {
    color: #ffffff;
}

[data-theme="light"] .pos-header-right button.btn-secondary,
[data-theme="light"] .admin-header button.btn-secondary,
[data-theme="light"] #theme-toggle-btn {
    background-color: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.35);
    color: #ffffff;
}

[data-theme="light"] .pos-header-right button.btn-secondary:hover,
[data-theme="light"] .admin-header button.btn-secondary:hover,
[data-theme="light"] #theme-toggle-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

[data-theme="light"] .currency-toggle {
    background-color: rgba(0, 0, 0, 0.15);
    border-color: rgba(255, 255, 255, 0.2);
}

[data-theme="light"] .currency-toggle-btn {
    color: rgba(255, 255, 255, 0.85);
}

[data-theme="light"] .currency-toggle-btn.active {
    background-color: #ffffff;
    color: #0369a1;
}

[data-theme="light"] #connectivity-badge.status-online {
    background-color: rgba(255, 255, 255, 0.25);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

[data-theme="light"] #shift-badge {
    background-color: rgba(255, 255, 255, 0.2) !important;
    color: #ffffff !important;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Light Mode Search Input Bar */
[data-theme="light"] #search-input {
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    color: #0f172a;
}

[data-theme="light"] #search-input::placeholder {
    color: #94a3b8;
}

/* Light Mode Product Cards & Grid */
[data-theme="light"] .product-card {
    background-color: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .product-card:hover {
    border-color: #0284c7;
    box-shadow: 0 8px 16px -2px rgba(2, 132, 199, 0.15);
}

[data-theme="light"] .product-card .price {
    color: #0284c7;
}

[data-theme="light"] .product-thumb-container {
    background-color: #f8fafc;
    border: 1px solid #f1f5f9;
}

/* Light Mode Category Tab Bar */
[data-theme="light"] .category-bar {
    background-color: #ffffff;
    border-bottom: 1px solid #e2e8f0;
}

[data-theme="light"] .category-tab {
    background-color: #f8fafc;
    border: 1px solid #e2e8f0;
    color: #334155;
}

[data-theme="light"] .category-tab.active {
    background-color: #e0f2fe;
    border-color: #0284c7;
    color: #0369a1;
}

/* Light Mode Cart Sidebar Summary Area (Matching reference image) */
[data-theme="light"] .pos-sidebar {
    background-color: #ffffff;
    border-left: 1px solid #cbd5e1;
}

[data-theme="light"] .cart-summary {
    background-color: #f0f9ff;
    border-top: 1px solid #bae6fd;
}

[data-theme="light"] .cart-item-row {
    border-bottom: 1px solid #f1f5f9;
}

/* Light Mode Table Cards & Admin Panes */
[data-theme="light"] .table-card {
    background-color: #ffffff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .pos-table th {
    background-color: #f8fafc;
    color: #475569;
    border-bottom: 2px solid #e2e8f0;
}

[data-theme="light"] .pos-table td {
    border-bottom: 1px solid #f1f5f9;
    color: #0f172a;
}

[data-theme="light"] .modal-overlay {
    background-color: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(6px);
}

[data-theme="light"] .modal-content {
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.12), 0 8px 10px -6px rgba(15, 23, 42, 0.06);
    color: #0f172a;
}

[data-theme="light"] .modal-header {
    border-bottom: 1px solid #f1f5f9;
    padding-bottom: 14px;
}

[data-theme="light"] .modal-title {
    color: #0f172a;
    font-weight: 700;
}

[data-theme="light"] .modal-close {
    color: #64748b;
}

[data-theme="light"] .modal-close:hover {
    color: #0f172a;
}

[data-theme="light"] .payment-option-btn {
    background-color: #f8fafc;
    border: 1px solid #e2e8f0;
    color: #334155;
}

[data-theme="light"] .payment-option-btn:hover {
    border-color: #0284c7;
    background-color: #f0f9ff;
}

[data-theme="light"] .payment-option-btn.active {
    background-color: #e0f2fe;
    border-color: #0284c7;
    color: #0369a1;
}

[data-theme="light"] .keypad-btn {
    background-color: #f8fafc;
    border: 1px solid #e2e8f0;
    color: #0f172a;
}

[data-theme="light"] .keypad-btn:hover {
    background-color: #e0f2fe;
    border-color: #0284c7;
}

[data-theme="light"] .form-label {
    color: #334155;
    font-weight: 600;
}

[data-theme="light"] .form-input {
    background-color: #f8fafc;
    border: 1px solid #cbd5e1;
    color: #0f172a;
}

[data-theme="light"] .form-input:focus {
    border-color: #0284c7;
    background-color: #ffffff;
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

[data-theme="light"] .receipt-preview {
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.03);
    color: #0f172a;
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Auth Screens Layout */
.auth-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    background: radial-gradient(circle at top, #1e1b4b, var(--bg-main));
}

.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 40px;
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.auth-logo {
    text-align: center;
    margin-bottom: 30px;
}

.auth-logo h1 {
    font-weight: 700;
    font-size: 28px;
    letter-spacing: -0.05em;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.auth-logo p {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 4px;
}

/* Forms controls styling */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-main);
}

.form-input {
    width: 100%;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 12px 16px;
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 15px;
    transition: var(--transition);
}

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

/* Custom switch / toggles */
.switch-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
}

/* Button UI */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 500;
    padding: 12px 24px;
    border-radius: var(--border-radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary);
    color: #0c1322;
    font-weight: 600;
}

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

.btn-secondary {
    background-color: var(--bg-input);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

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

.btn-danger {
    background-color: var(--danger);
    color: var(--text-main);
}

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

.btn-block {
    width: 100%;
}

/* PIN Screen Grid Styling */
.pin-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 25px;
}

.pin-btn {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-size: 24px;
    font-weight: 600;
    height: 70px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pin-btn:hover {
    background: var(--border-color);
}

.pin-btn:active {
    transform: scale(0.92);
}

.pin-display {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 25px;
}

.pin-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.pin-dot.filled {
    background-color: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 0 8px var(--primary);
}

/* POS Terminal Layout */
.pos-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    height: 100vh;
    overflow: hidden;
}

.pos-main {
    display: flex;
    flex-direction: column;
    height: 100%;
    border-right: 1px solid var(--border-color);
}

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

.pos-header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.pos-logo {
    font-weight: 700;
    font-size: 20px;
    color: var(--primary);
    text-decoration: none;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.status-online {
    background-color: rgba(16, 185, 129, 0.15);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-offline {
    background-color: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.status-pending-warning {
    background-color: rgba(245, 158, 11, 0.2);
    color: #fbbf24; /* High-contrast bright amber for dark background */
    border: 1px solid rgba(245, 158, 11, 0.4);
}

[data-theme="light"] .status-pending-warning {
    background-color: #fef3c7;
    color: #b45309; /* High-contrast dark amber text for light mode (WCAG AAA) */
    border: 1px solid #fde68a;
}

.status-danger {
    background-color: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.status-secondary {
    background-color: var(--bg-input);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.pos-header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Currency Selector Segmented Switch */
.currency-toggle {
    display: flex;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 3px;
    position: relative;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.2);
}

.currency-toggle-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 5px 14px;
    border-radius: 16px;
    cursor: pointer;
    transition: var(--transition);
    z-index: 1;
}

.currency-toggle-btn:hover {
    color: var(--text-main);
}

.currency-toggle-btn.active {
    background-color: var(--primary);
    color: #0c1322;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

/* Theme Toggle Button */
.theme-toggle-btn {
    padding: 6px 10px;
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
}

/* User Dropdown Navigation */
.user-dropdown-container {
    position: relative;
}

.user-dropdown-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 500;
    border-radius: 20px;
    cursor: pointer;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    transition: var(--transition);
}

.user-dropdown-btn:hover,
.user-dropdown-container.active .user-dropdown-btn {
    background-color: var(--border-color);
}

.user-avatar {
    font-size: 14px;
}

.dropdown-caret {
    font-size: 10px;
    color: var(--text-muted);
    transition: transform 0.2s ease;
}

.user-dropdown-container.active .dropdown-caret {
    transform: rotate(180deg);
}

.user-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 210px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 6px;
    z-index: 1200;
    display: none;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.user-dropdown-container.active .user-dropdown-menu {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.user-dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-main);
    background: transparent;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

.user-dropdown-item:hover {
    background-color: var(--bg-input);
}

.user-dropdown-item.item-danger {
    color: var(--danger);
}

.user-dropdown-item.item-danger:hover {
    background-color: var(--danger-bg);
}

.user-dropdown-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 4px 0;
}

.dropdown-icon {
    font-size: 15px;
    width: 20px;
    text-align: center;
}

/* Category Slider */
.category-bar {
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 10px 20px;
    display: flex;
    gap: 10px;
    overflow-x: auto;
    white-space: nowrap;
    scrollbar-width: none; /* Firefox */
}

.category-bar::-webkit-scrollbar {
    display: none; /* Safari/Chrome */
}

.category-tab {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 8px 18px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.category-tab:hover {
    border-color: var(--text-muted);
}

.category-tab.active {
    background-color: var(--primary-bg);
    border-color: var(--primary);
    color: var(--primary);
}

/* Product Catalog Grid */
.catalog-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.catalog-search-wrapper {
    margin-bottom: 20px;
}

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 16px;
}

.product-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 14px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
    user-select: none;
    touch-action: manipulation;
}

.product-card .product-thumb-container {
    width: 100%;
    height: 115px;
    background-color: var(--bg-main);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.product-card .product-thumb-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-card:hover .product-thumb-img {
    transform: scale(1.05);
}

.cart-item-thumb {
    width: 36px;
    height: 36px;
    border-radius: 6px;
    object-fit: cover;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.product-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.product-card:active {
    transform: scale(0.96);
    box-shadow: 0 0 0 2px var(--primary-bg);
}

/* Standardized Stock Badges */
.product-card .stock-tag {
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 12px;
    backdrop-filter: blur(4px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    letter-spacing: 0.02em;
}

.stock-ok {
    background-color: rgba(16, 185, 129, 0.2);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.4);
}

.stock-low {
    background-color: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
    border: 1px solid rgba(245, 158, 11, 0.4);
}

.stock-out {
    background-color: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.4);
}

.product-card .sku {
    color: var(--text-muted);
    font-size: 11px;
    font-family: var(--font-mono);
    margin-bottom: 2px;
    letter-spacing: 0.03em;
}

.product-card .name {
    font-weight: 600;
    font-size: 15px;
    line-height: 1.3;
    color: var(--text-main);
    margin-bottom: auto;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 40px;
}

.product-card .price {
    font-weight: 700;
    font-size: 16px;
    color: var(--primary);
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* POS Cart / Sidebar panel */
.pos-sidebar {
    background-color: var(--bg-card);
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.cart-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.customer-selector {
    padding: 10px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-main);
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    padding: 10px 20px;
}

.cart-item-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.cart-item-details {
    flex: 1;
    padding-right: 10px;
}

.cart-item-name {
    font-weight: 500;
    font-size: 14px;
}

.cart-item-price {
    font-size: 12px;
    color: var(--text-muted);
}

.cart-item-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.qty-btn {
    background-color: var(--bg-input);
    color: var(--text-main);
    border: none;
    width: 28px;
    height: 28px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.cart-item-qty {
    font-size: 14px;
    font-weight: 600;
    width: 20px;
    text-align: center;
}

.cart-item-total {
    font-weight: 600;
    font-size: 14px;
    text-align: right;
    min-width: 70px;
}

/* Empty Cart State Polish */
.empty-cart-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
    color: var(--text-muted);
}

.empty-cart-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--text-muted);
}

.empty-cart-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 4px;
}

.empty-cart-sub {
    font-size: 13px;
    color: var(--text-muted);
    max-width: 240px;
    line-height: 1.4;
}

/* Cart Summary & Contrast Improvements */
.cart-summary {
    padding: 20px;
    background-color: var(--bg-main);
    border-top: 1px solid var(--border-color);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    margin-bottom: 10px;
}

.summary-label {
    color: #cbd5e1; /* High contrast Slate 300 for Dark mode (WCAG AAA) */
    font-weight: 500;
}

[data-theme="light"] .summary-label {
    color: #334155; /* High contrast Slate 700 for Light mode */
    font-weight: 600;
}

.summary-val {
    color: var(--text-main);
    font-weight: 600;
}

.discount-val {
    color: var(--danger) !important;
}

.summary-row.total {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px dashed var(--border-color);
}

.summary-row.total .price-val {
    color: var(--primary);
    font-size: 20px;
}

.checkout-btn-wrap {
    margin-top: 16px;
    display: flex;
    gap: 12px;
    align-items: stretch;
}

#park-sale-btn {
    flex: 1 1 35%;
    padding: 12px 10px;
    font-weight: 600;
    font-size: 14px;
    white-space: nowrap;
}

#charge-btn {
    flex: 2 1 65%;
    padding: 12px 16px;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.04em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
    background-color: var(--primary);
    color: #0c1322;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
}

#charge-btn:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.35);
}

/* Custom Keypad for float / payments */
.payment-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

/* Elegant Modal overlays */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    backdrop-filter: blur(4px);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 30px;
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: var(--transition);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-title {
    font-size: 20px;
    font-weight: 600;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
}

/* Receipt Preview Box */
.receipt-preview {
    background-color: #ffffff;
    padding: 20px;
    border-radius: 6px;
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid #ddd;
    margin-bottom: 20px;
}

/* Admin Dashboard Layout */
.admin-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: 100vh;
}

.admin-sidebar {
    background-color: var(--bg-card);
    border-right: 1px solid var(--border-color);
    padding: 24px 0;
    display: flex;
    flex-direction: column;
}

.admin-nav {
    display: flex;
    flex-direction: column;
    margin-top: 30px;
}

.admin-nav-item {
    padding: 12px 24px;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.admin-nav-item:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.04);
}

.admin-nav-item.active {
    color: var(--primary);
    font-weight: 700;
    background-color: var(--primary-bg);
    border-left: 4px solid var(--primary);
}

[data-theme="light"] .admin-nav-item.active {
    background-color: #e0f2fe;
    color: #0284c7;
    border-left-color: #0284c7;
}

.register-cta-btn {
    background-color: var(--primary);
    color: #0c1322;
    font-weight: 700;
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
}

.register-cta-btn:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.35);
}

.admin-main {
    padding: 28px 36px;
    overflow-y: auto;
    height: 100vh;
}

.admin-view-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

.admin-view-title {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.admin-view-sub {
    color: var(--text-muted);
    font-size: 13px;
    margin-top: 2px;
}

/* Table Actions & Button Row */
.table-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.action-btn-row {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-sm {
    padding: 4px 10px !important;
    font-size: 12px !important;
    line-height: 1.3 !important;
}

/* Beautiful Dashboard Metrics Cards */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.metric-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px 24px;
    box-shadow: var(--shadow);
}

.metric-title {
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 6px;
    letter-spacing: 0.04em;
}

.metric-val {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-main);
}

.metric-val.profit {
    color: var(--primary);
}

/* Reporting & Auditing Tables */
.table-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.table-title {
    font-size: 17px;
    font-weight: 600;
}

.pos-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 13px;
}

.pos-table th {
    color: var(--text-muted);
    font-weight: 600;
    padding: 10px 14px;
    border-bottom: 2px solid var(--border-color);
}

.pos-table td {
    padding: 10px 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    vertical-align: middle;
}

.pos-table tr:hover td {
    background-color: rgba(255, 255, 255, 0.02);
}

/* Split payment layout */
.payment-selector-row {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.payment-badge {
    flex: 1;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 12px;
    text-align: center;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.payment-badge:hover {
    border-color: var(--text-muted);
}

.payment-badge.active {
    background-color: var(--primary-bg);
    border-color: var(--primary);
    color: var(--primary);
}

/* ==========================================
   ELEGANT GLASSMORPHIC TOAST NOTIFICATION SYSTEM
   ========================================== */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 9999;
    max-width: 420px;
    width: calc(100vw - 48px);
    pointer-events: none;
}

.toast {
    pointer-events: auto;
    position: relative;
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 14px 16px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25), 0 2px 6px rgba(0, 0, 0, 0.12);
    display: flex;
    align-items: center;
    gap: 12px;
    transform: translateX(120%) scale(0.95);
    opacity: 0;
    transition: transform 0.35s cubic-bezier(0.21, 1.02, 0.43, 1), opacity 0.3s ease;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.toast.show {
    transform: translateX(0) scale(1);
    opacity: 1;
}

/* Toast Icon Wrapper */
.toast-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Toast Content */
.toast-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.toast-message {
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text-main);
    line-height: 1.4;
    word-break: break-word;
}

/* Toast Close Button */
.toast-close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    padding: 4px;
    margin-left: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.7;
    transition: opacity 0.2s ease, background-color 0.2s ease;
    flex-shrink: 0;
}

.toast-close-btn:hover {
    opacity: 1;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
}

/* Toast Auto-Dismiss Progress Bar */
.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    width: 100%;
    background: currentColor;
    opacity: 0.4;
    transform-origin: left;
    animation: toastProgress linear forwards;
}

@keyframes toastProgress {
    from { transform: scaleX(1); }
    to { transform: scaleX(0); }
}

/* --- Type-Specific Themes --- */

/* Toast Success (Emerald) */
.toast-success {
    border-color: rgba(16, 185, 129, 0.35);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(16, 185, 129, 0.08) 100%);
}
.toast-success .toast-icon-wrapper {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}
.toast-success .toast-progress {
    background: #10b981;
}

/* Toast Error (Rose) */
.toast-error {
    border-color: rgba(244, 63, 94, 0.35);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(244, 63, 94, 0.08) 100%);
}
.toast-error .toast-icon-wrapper {
    background: rgba(244, 63, 94, 0.15);
    color: #f43f5e;
}
.toast-error .toast-progress {
    background: #f43f5e;
}

/* Toast Warning (Amber) */
.toast-warning {
    border-color: rgba(245, 158, 11, 0.35);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(245, 158, 11, 0.08) 100%);
}
.toast-warning .toast-icon-wrapper {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}
.toast-warning .toast-progress {
    background: #f59e0b;
}

/* Toast Info (Blue / Indigo) */
.toast-info {
    border-color: rgba(59, 130, 246, 0.35);
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(59, 130, 246, 0.08) 100%);
}
.toast-info .toast-icon-wrapper {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
}
.toast-info .toast-progress {
    background: #3b82f6;
}

/* ==========================================
   PRINT STYLING FOR RECEIPTS & BARCODE LABELS
   ========================================== */
@media print {
    body {
        background: #ffffff !important;
        color: #000000 !important;
    }
    
    body * {
        visibility: hidden;
    }
    
    /* Make receipt and barcode label target containers the only visible elements */
    .receipt-print-target, .receipt-print-target *,
    .barcode-label-sheet, .barcode-label-sheet *,
    #barcode-preview-box, #barcode-preview-box * {
        visibility: visible !important;
    }
    
    .modal-overlay,
    .admin-sidebar,
    .admin-main,
    .pos-layout,
    .auth-wrapper,
    .modal-header,
    .modal-close,
    button,
    .btn {
        display: none !important;
    }
    
    .receipt-print-target {
        position: absolute;
        left: 0;
        top: 0;
        width: 80mm;
        margin: 0;
        padding: 0;
        background: #fff;
        color: #000;
        font-family: var(--font-mono);
    }

    .barcode-label-sheet,
    #barcode-preview-box {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        margin: 0;
        padding: 15px;
        background: #ffffff !important;
        color: #000000 !important;
        text-align: center;
    }

    .barcode-label-sheet svg,
    #barcode-preview-box svg {
        max-width: 100% !important;
        height: auto !important;
        display: block;
        margin: 0 auto;
    }
    
    @page {
        size: auto;
        margin: 5mm;
    }
}

/* ==========================================
   RESPONSIVE DESIGN SYSTEM MEDIA QUERIES
   ========================================== */

/* Tablet & Mobile Layouts for POS Screen */
@media (max-width: 992px) {
    .pos-layout {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto;
        height: auto;
        overflow: visible;
    }
    .pos-sidebar {
        height: auto;
        border-top: 1px solid var(--border-color);
    }
    .cart-items {
        max-height: 400px;
    }
}

/* Mobile & Tablet Layouts for Admin Dashboard */
@media (max-width: 768px) {
    .admin-layout {
        grid-template-columns: 1fr;
    }
    .admin-sidebar {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 15px 0;
    }
    .admin-main {
        padding: 20px;
        height: auto;
    }
    .admin-nav {
        flex-direction: row;
        overflow-x: auto;
        margin-top: 15px;
        white-space: nowrap;
        scrollbar-width: none;
    }
    .admin-nav::-webkit-scrollbar {
        display: none;
    }
    .admin-nav-item {
        border-left: none;
        border-bottom: 3px solid transparent;
        padding: 10px 15px;
    }
    .admin-nav-item:hover, .admin-nav-item.active {
        border-left-color: transparent;
        border-bottom-color: var(--primary);
    }
    .metrics-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}