/* Your existing CSS remains exactly the same */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
        }

        :root {
            --bg-primary: #f3f4f6;
            --bg-secondary: #ffffff;
            --text-primary: #1f2937;
            --text-secondary: #6b7280;
            --accent: #22c55e;
            --accent-hover: #16a34a;
            --danger: #ef4444;
            --warning: #f59e0b;
            --info: #3b82f6;
            --border: #e5e7eb;
            --card-bg: #ffffff;
            --header-bg: #ffffff;
            --nav-bg: #ffffff;
        }

        [data-theme="dark"] {
            --bg-primary: #111827;
            --bg-secondary: #1f2937;
            --text-primary: #f9fafb;
            --text-secondary: #9ca3af;
            --accent: #22c55e;
            --accent-hover: #16a34a;
            --danger: #ef4444;
            --warning: #f59e0b;
            --info: #3b82f6;
            --border: #374151;
            --card-bg: #1f2937;
            --header-bg: #111827;
            --nav-bg: #111827;
        }

        body {
            background: var(--bg-primary);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            color: var(--text-primary);
            transition: background-color 0.3s, color 0.3s;
        }

        .screen {
            display: none;
            width: 100%;
            max-width: 480px;
            height: 100vh;
            background: var(--bg-primary);
            position: relative;
            overflow-y: auto;
        }

        .screen.active {
            display: block;
        }

        /* PIN Screen */
        #pin-screen {
            background: var(--accent);
            display: none;
            align-items: center;
            justify-content: center;
        }

        #pin-screen.active {
            display: flex;
        }

        .pin-container {
            width: 100%;
            max-width: 320px;
            padding: 24px;
            background: var(--bg-secondary);
            border-radius: 32px;
            text-align: center;
            box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
        }

        .pin-icon {
            font-size: 48px;
            margin-bottom: 16px;
        }

        .pin-subtitle {
            color: var(--text-secondary);
            font-size: 14px;
            margin: 8px 0 24px;
        }

        .pin-dots {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin: 24px 0;
        }

        .pin-dot {
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--border);
            transition: background 0.3s;
        }

        .pin-dot.filled {
            background: var(--accent);
        }

        .pin-error {
            color: var(--danger);
            font-size: 14px;
            min-height: 20px;
            margin-bottom: 16px;
        }

        .pin-keypad {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
        }

        .pin-key {
            aspect-ratio: 1;
            border: none;
            background: var(--bg-primary);
            border-radius: 16px;
            font-size: 24px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            transition: all 0.2s;
        }

        .pin-key:active {
            background: var(--border);
            transform: scale(0.95);
        }

        .pin-key.clear, .pin-key.delete {
            font-size: 18px;
            color: var(--danger);
        }

        /* Main App Container */
        #app-container {
            display: none;
            flex-direction: column;
            height: 100vh;
            background: var(--bg-primary);
        }

        #app-container.active {
            display: flex;
        }

        /* Header */
        .header {
            background: var(--header-bg);
            padding: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 10;
        }

        .menu-btn, .notification-btn {
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            padding: 8px;
            position: relative;
            color: var(--text-primary);
        }

        .header-center {
            text-align: center;
        }

        .shop-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .header-date {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .notification-badge {
            position: absolute;
            top: 0;
            right: 0;
            background: var(--danger);
            color: white;
            font-size: 12px;
            min-width: 18px;
            height: 18px;
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* Side Navigation */
        .sidenav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            z-index: 20;
        }

        .sidenav-overlay.active {
            display: block;
        }

        .sidenav {
            position: fixed;
            top: 0;
            left: -280px;
            width: 280px;
            height: 100vh;
            background: var(--nav-bg);
            z-index: 30;
            transition: left 0.3s;
            overflow-y: auto;
            display: flex;
            flex-direction: column;
            box-shadow: 2px 0 8px rgba(0,0,0,0.1);
        }

        .sidenav.active {
            left: 0;
        }

        .sidenav-header {
            padding: 24px;
            background: var(--accent);
            color: white;
        }

        .sidenav-status {
            font-size: 14px;
            opacity: 0.9;
        }

        .sidenav-section {
            padding: 16px;
            border-bottom: 1px solid var(--border);
        }

        .sidenav-section-title {
            font-size: 12px;
            color: var(--text-secondary);
            margin-bottom: 8px;
            text-transform: uppercase;
        }

        .sidenav-item {
            width: 100%;
            padding: 12px;
            background: none;
            border: none;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 16px;
            color: var(--text-primary);
            cursor: pointer;
            border-radius: 8px;
            transition: background 0.2s;
        }

        .sidenav-item:hover {
            background: var(--bg-primary);
        }

        .sidenav-item.active {
            background: var(--accent);
            color: white;
        }

        .sidenav-icon {
            font-size: 20px;
        }

        .sidenav-footer {
            padding: 16px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 12px;
            margin-top: auto;
        }

        /* Page Content */
        .page-content {
            flex: 1;
            overflow-y: auto;
            padding: 16px;
            padding-bottom: 80px;
        }

        .page {
            display: none;
        }

        .page.active {
            display: block;
        }

        /* Cards */
        .card {
            background: var(--card-bg);
            border-radius: 16px;
            padding: 20px;
            margin-bottom: 16px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
            border: 1px solid var(--border);
        }

        .card-primary {
            background: var(--accent);
            color: white;
            border: none;
        }

        .card-primary .card-label {
            color: rgba(255,255,255,0.9);
            font-size: 14px;
        }

        .card-primary .card-value {
            font-size: 32px;
            font-weight: 700;
            margin: 8px 0;
        }

        .card-stats {
            display: flex;
            justify-content: space-between;
            font-size: 14px;
            opacity: 0.9;
        }

        /* Stats Grid - Standard */
        .stats-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-bottom: 16px;
        }

        .stat-card {
            background: var(--card-bg);
            border-radius: 12px;
            padding: 16px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
            border: 1px solid var(--border);
        }

        .stat-green .stat-value {
            color: var(--accent);
        }

        .stat-red .stat-value {
            color: var(--danger);
        }

        .stat-icon {
            font-size: 24px;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .stat-value {
            font-size: 24px;
            font-weight: 700;
            margin: 4px 0;
        }

        .stat-amount {
            font-size: 14px;
            color: var(--text-primary);
        }

        /* Section Titles */
        .section-title {
            font-size: 18px;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .section-title-red {
            color: var(--danger);
        }

        /* List Items */
        .list-item {
            background: var(--card-bg);
            border-radius: 12px;
            padding: 16px;
            margin-bottom: 8px;
            border: 1px solid var(--border);
        }

        .customer-item {
            cursor: pointer;
            transition: transform 0.2s;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .customer-item:active {
            transform: scale(0.98);
        }

        .list-item-left {
            flex: 1;
        }

        .list-item-name {
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-primary);
        }

        .list-item-detail {
            font-size: 12px;
            color: var(--text-secondary);
            display: flex;
            gap: 8px;
        }

        .list-item-right {
            text-align: right;
        }

        .list-item-amount {
            font-weight: 700;
            font-size: 18px;
            color: var(--text-primary);
        }

        .list-item-date {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .list-item-status {
            font-size: 11px;
            padding: 2px 8px;
            border-radius: 12px;
            background: var(--bg-primary);
            margin-top: 4px;
            display: inline-block;
            color: var(--text-primary);
        }

        .list-item-status.overdue {
            background: var(--danger);
            color: white;
        }

        .list-item-status.paid {
            background: var(--accent);
            color: white;
        }

        .list-item-status.partial {
            background: var(--warning);
            color: white;
        }

        /* Bought Item Card */
        .bought-item {
            background: var(--card-bg);
            border-radius: 12px;
            padding: 16px;
            margin-bottom: 12px;
            border: 1px solid var(--border);
        }

        .bought-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 12px;
        }

        .bought-title {
            font-weight: 600;
            font-size: 16px;
        }

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

        .bought-action-btn {
            background: none;
            border: none;
            font-size: 20px;
            cursor: pointer;
            padding: 8px 12px;
            border-radius: 8px;
            transition: background 0.2s;
        }

        .bought-action-btn.edit {
            color: var(--accent);
        }

        .bought-action-btn.edit:hover {
            background: var(--accent);
            color: white;
        }

        .bought-action-btn.delete {
            color: var(--danger);
        }

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

        .bought-details {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-bottom: 12px;
            font-size: 14px;
        }

        .bought-detail-label {
            color: var(--text-secondary);
            font-size: 12px;
        }

        .bought-detail-value {
            font-weight: 600;
            font-size: 14px;
        }

        .bought-payments {
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px dashed var(--border);
        }

        .bought-payment-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 8px;
            background: var(--bg-primary);
            border-radius: 8px;
            margin-bottom: 4px;
            font-size: 13px;
        }

        .bought-payment-date {
            color: var(--text-secondary);
        }

        .bought-payment-amount {
            font-weight: 600;
            color: var(--accent);
        }

        /* Payment Item */
        .payment-item {
            background: var(--card-bg);
            border-radius: 12px;
            padding: 16px;
            margin-bottom: 8px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border: 1px solid var(--border);
        }

        .payment-info {
            flex: 1;
        }

        .payment-date {
            font-size: 12px;
            color: var(--text-secondary);
            margin-bottom: 4px;
        }

        .payment-amount {
            font-weight: 600;
            font-size: 18px;
            color: var(--accent);
        }

        .payment-item-name {
            font-size: 13px;
            color: var(--text-primary);
            margin-top: 2px;
        }

        .payment-actions {
            display: flex;
            gap: 12px;
        }

        .payment-print, .payment-edit, .payment-delete {
            font-size: 20px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: all 0.2s;
        }

        .payment-print {
            color: var(--info);
        }

        .payment-print:hover {
            background: var(--info);
            color: white;
        }

        .payment-edit {
            color: var(--accent);
        }

        .payment-edit:hover {
            background: var(--accent);
            color: white;
        }

        .payment-delete {
            color: var(--danger);
        }

        .payment-delete:hover {
            background: var(--danger);
            color: white;
        }

        /* Payment Summary */
        .payment-summary {
            background: var(--accent);
            color: white;
            border-radius: 12px;
            padding: 20px;
            margin-bottom: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .payment-summary-label {
            font-size: 16px;
            opacity: 0.9;
        }

        .payment-summary-amount {
            font-size: 28px;
            font-weight: 700;
        }

        /* Payment Buttons - Standard */
        .payment-buttons {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 12px;
            margin: 20px 0;
        }

        .payment-btn {
            padding: 16px 8px;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            color: var(--text-primary);
            transition: all 0.2s;
        }

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

        .payment-btn small {
            font-size: 12px;
            opacity: 0.8;
        }

        /* SMS Compose */
        .sms-compose {
            background: var(--card-bg);
            border-radius: 16px;
            padding: 20px;
            margin-bottom: 16px;
            border: 1px solid var(--border);
        }

        .sms-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .sms-icon {
            font-size: 24px;
        }

        .sms-title {
            font-weight: 600;
            font-size: 18px;
        }

        .sms-message {
            background: var(--bg-primary);
            border-radius: 12px;
            padding: 16px;
            margin-bottom: 16px;
            font-size: 14px;
            line-height: 1.6;
            border: 1px solid var(--border);
        }

        .sms-variables {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 16px;
        }

        .sms-variable {
            background: var(--accent);
            color: white;
            padding: 10px 16px;
            border-radius: 20px;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.2s;
            border: none;
        }

        .sms-variable:hover {
            background: var(--accent-hover);
            transform: scale(0.98);
        }

        .sms-actions {
            display: flex;
            gap: 12px;
        }

        .sms-btn {
            flex: 1;
            padding: 16px;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all 0.2s;
        }

        .sms-copy {
            background: var(--accent);
            color: white;
        }

        .sms-copy:hover {
            background: var(--accent-hover);
        }

        .sms-send {
            background: var(--info);
            color: white;
        }

        .sms-send:hover {
            background: #2563eb;
        }

        .sms-template-item {
            background: var(--bg-primary);
            border-radius: 8px;
            padding: 16px;
            margin-bottom: 8px;
            cursor: pointer;
            border: 1px solid var(--border);
            transition: all 0.2s;
        }

        .sms-template-item:hover {
            background: var(--accent);
            color: white;
        }

        .sms-template-item:hover .sms-template-preview {
            color: rgba(255,255,255,0.9);
        }

        .sms-template-title {
            font-weight: 600;
            margin-bottom: 4px;
        }

        .sms-template-preview {
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* Quick Actions */
        .quick-actions {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 16px;
        }

        .quick-action-btn {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 16px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-primary);
            cursor: pointer;
            transition: all 0.2s;
        }

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

        .quick-action-icon {
            font-size: 24px;
        }

        /* Bottom Navigation */
        .bottom-nav {
            background: var(--nav-bg);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            padding: 8px;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            max-width: 480px;
            margin: 0 auto;
            box-shadow: 0 -2px 4px rgba(0,0,0,0.05);
            z-index: 10;
            border-top: 1px solid var(--border);
        }

        .nav-item {
            background: none;
            border: none;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            color: var(--text-secondary);
            cursor: pointer;
            padding: 8px;
            transition: all 0.2s;
            border-radius: 8px;
        }

        .nav-item:hover {
            background: var(--bg-primary);
        }

        .nav-item.active {
            color: var(--accent);
            background: var(--bg-primary);
        }

        .nav-icon {
            font-size: 20px;
        }

        /* Forms - Standard */
        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 4px;
            color: var(--text-primary);
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 14px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 16px;
            background: var(--bg-secondary);
            color: var(--text-primary);
            transition: border-color 0.2s;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--accent);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 8px;
        }

        /* Buttons - Standard */
        .btn {
            padding: 14px 24px;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        .btn:active {
            transform: translateY(0);
        }

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

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

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

        .btn-secondary:hover {
            background: #4b5563;
        }

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

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

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

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

        .btn-outline {
            background: transparent;
            border: 1px solid var(--accent);
            color: var(--accent);
        }

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

        .btn-block {
            width: 100%;
        }

        .btn-lg {
            padding: 16px 32px;
            font-size: 18px;
        }

        .btn-sm {
            padding: 10px 16px;
            font-size: 14px;
        }

        /* Search Bar - Standard */
        .search-bar {
            background: var(--card-bg);
            border-radius: 12px;
            padding: 12px 16px;
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            border: 1px solid var(--border);
        }

        .search-icon {
            font-size: 20px;
            color: var(--text-secondary);
        }

        .search-bar input {
            flex: 1;
            border: none;
            font-size: 16px;
            background: transparent;
            color: var(--text-primary);
            padding: 4px 0;
        }

        .search-bar input:focus {
            outline: none;
        }

        .search-bar input::placeholder {
            color: var(--text-secondary);
        }

        .btn-add {
            background: var(--accent);
            color: white;
            border: none;
            border-radius: 8px;
            padding: 10px 16px;
            font-size: 20px;
            cursor: pointer;
            transition: all 0.2s;
        }

        .btn-add:hover {
            background: var(--accent-hover);
        }

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            align-items: center;
            justify-content: center;
            z-index: 100;
        }

        .modal.active {
            display: flex;
        }

        .modal-content {
            background: var(--bg-secondary);
            border-radius: 16px;
            padding: 24px;
            width: 90%;
            max-width: 400px;
            max-height: 90vh;
            overflow-y: auto;
            border: 1px solid var(--border);
        }

        .modal-sm {
            max-width: 300px;
        }

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

        .modal-header h3 {
            color: var(--text-primary);
            font-size: 20px;
        }

        .modal-close {
            background: none;
            border: none;
            font-size: 28px;
            cursor: pointer;
            color: var(--text-secondary);
            padding: 0 8px;
        }

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

        .form-actions {
            display: flex;
            gap: 12px;
            margin-top: 20px;
        }

        .form-actions .btn {
            flex: 1;
        }

        /* Toast */
        .toast-container {
            position: fixed;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            pointer-events: none;
        }

        .toast {
            background: var(--text-primary);
            color: white;
            padding: 14px 28px;
            border-radius: 8px;
            margin-bottom: 8px;
            animation: slideUp 0.3s ease;
            pointer-events: auto;
            font-size: 14px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        @keyframes slideUp {
            from {
                transform: translateY(100%);
                opacity: 0;
            }
            to {
                transform: translateY(0);
                opacity: 1;
            }
        }

        /* Back button */
        .page-header.with-back {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }

        .back-btn {
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            padding: 8px 12px;
            color: var(--text-primary);
            border-radius: 8px;
            transition: background 0.2s;
        }

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

        .delete-btn, .edit-btn, .print-btn {
            background: none;
            border: none;
            font-size: 20px;
            cursor: pointer;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all 0.2s;
        }

        .print-btn {
            color: var(--info);
        }

        .print-btn:hover {
            background: var(--info);
            color: white;
        }

        .edit-btn {
            color: var(--accent);
        }

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

        .delete-btn {
            color: var(--danger);
            margin-left: auto;
        }

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

        /* Customer Tabs - Order: Payment, SMS, Bought */
        .customer-tabs {
            display: flex;
            gap: 8px;
            background: var(--card-bg);
            padding: 4px;
            border-radius: 12px;
            margin-bottom: 20px;
            border: 1px solid var(--border);
        }

        .customer-tab {
            flex: 1;
            padding: 14px;
            border: none;
            background: transparent;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .customer-tab:hover {
            background: var(--bg-primary);
        }

        .customer-tab.active {
            background: var(--accent);
            color: white;
        }

        .customer-tab-content {
            display: none;
        }

        .customer-tab-content.active {
            display: block;
        }

        /* Reports Tabs - Standard */
        .reports-tabs {
            display: flex;
            gap: 8px;
            background: var(--card-bg);
            padding: 4px;
            border-radius: 12px;
            margin-bottom: 20px;
            border: 1px solid var(--border);
        }

        .reports-tab {
            flex: 1;
            padding: 14px;
            border: none;
            background: transparent;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .reports-tab:hover {
            background: var(--bg-primary);
        }

        .reports-tab.active {
            background: var(--accent);
            color: white;
        }

        .reports-tab-content {
            display: none;
        }

        .reports-tab-content.active {
            display: block;
        }

        /* Report Items */
        .report-item {
            background: var(--bg-primary);
            border-radius: 8px;
            padding: 16px;
            margin-bottom: 8px;
            border: 1px solid var(--border);
        }

        .report-item-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
        }

        .report-item-title {
            font-weight: 600;
        }

        .report-item-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            font-size: 14px;
        }

        /* Credit Sale Plan Buttons - Standard */
        .plan-buttons {
            display: flex;
            gap: 8px;
            background: var(--card-bg);
            padding: 4px;
            border-radius: 12px;
            border: 1px solid var(--border);
        }

        .plan-btn {
            flex: 1;
            padding: 14px;
            border: none;
            background: transparent;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
            color: var(--text-secondary);
        }

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

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

        /* Settings Toggle - Standard */
        .settings-toggle {
            background: var(--card-bg);
            border-radius: 12px;
            padding: 20px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border: 1px solid var(--border);
        }

        .settings-toggle-info {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .settings-toggle-icon {
            font-size: 28px;
        }

        .settings-toggle-title {
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-primary);
            font-size: 16px;
        }

        .settings-toggle-subtitle {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .toggle {
            position: relative;
            display: inline-block;
            width: 60px;
            height: 32px;
        }

        .toggle input {
            opacity: 0;
            width: 0;
            height: 0;
        }

        .toggle-slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: var(--border);
            transition: .4s;
            border-radius: 34px;
        }

        .toggle-slider:before {
            position: absolute;
            content: "";
            height: 24px;
            width: 24px;
            left: 4px;
            bottom: 4px;
            background-color: white;
            transition: .4s;
            border-radius: 50%;
        }

        input:checked + .toggle-slider {
            background-color: var(--accent);
        }

        input:checked + .toggle-slider:before {
            transform: translateX(28px);
        }

        /* Total Card */
        .total-card {
            background: var(--bg-primary);
            border-radius: 12px;
            padding: 20px;
            margin: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border: 1px solid var(--border);
        }

        .total-label {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-secondary);
        }

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

        /* Support info */
        .support-info {
            margin-top: 20px;
            padding: 20px;
            background: var(--card-bg);
            border-radius: 12px;
            text-align: center;
            border: 1px solid var(--border);
        }

        .support-email {
            color: var(--accent);
            font-size: 18px;
            font-weight: 600;
            margin: 8px 0;
        }

        .support-website {
            color: var(--text-secondary);
            font-size: 15px;
        }

        /* Print styles */
        @media print {
            .header, .bottom-nav, .sidenav, .sidenav-overlay, .btn, .quick-actions, .customer-tabs, .payment-actions, .bought-actions {
                display: none !important;
            }
            
            .page-content {
                padding: 0;
                margin: 0;
            }
            
            .card, .bought-item, .payment-item {
                break-inside: avoid;
                border: 1px solid #000;
                box-shadow: none;
            }
            
            body {
                background: white;
            }
            
            * {
                color: black !important;
            }
        }

        /* Calculator */
        .calc-display {
            background: var(--bg-primary);
            padding: 20px;
            border-radius: 8px;
            font-size: 32px;
            text-align: right;
            margin-bottom: 16px;
            color: var(--text-primary);
            border: 1px solid var(--border);
        }

        .calc-keypad {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 8px;
            margin-bottom: 16px;
        }

        .calc-key {
            aspect-ratio: 1;
            border: none;
            background: var(--bg-primary);
            border-radius: 8px;
            font-size: 20px;
            cursor: pointer;
            color: var(--text-primary);
            transition: all 0.2s;
        }

        .calc-key:hover {
            background: var(--border);
        }

        .calc-key.operator {
            background: var(--border);
        }

        .calc-key.equals {
            background: var(--accent);
            color: white;
        }

        .calc-key.equals:hover {
            background: var(--accent-hover);
        }

        /* Customer dropdown */
        .customer-search-container {
            position: relative;
        }

        .customer-dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--bg-secondary);
            border: 1px solid var(--border);
            border-radius: 8px;
            max-height: 200px;
            overflow-y: auto;
            z-index: 10;
            display: none;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        .customer-dropdown.active {
            display: block;
        }

        .customer-option {
            padding: 14px;
            cursor: pointer;
            border-bottom: 1px solid var(--border);
            color: var(--text-primary);
        }

        .customer-option:hover {
            background: var(--bg-primary);
        }

        .btn-clear {
            background: none;
            border: none;
            font-size: 20px;
            cursor: pointer;
            color: var(--text-secondary);
            padding: 8px;
        }

        /* Item dropdown */
        .item-search-container {
            position: relative;
        }

        .item-dropdown {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--bg-secondary);
            border: 1px solid var(--border);
            border-radius: 8px;
            max-height: 200px;
            overflow-y: auto;
            z-index: 10;
            display: none;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

        .item-dropdown.active {
            display: block;
        }

        .item-option {
            padding: 14px;
            cursor: pointer;
            border-bottom: 1px solid var(--border);
            color: var(--text-primary);
        }

        .item-option:hover {
            background: var(--bg-primary);
        }

        /* Selected customer */
        #selected-customer {
            display: none;
            align-items: center;
            justify-content: space-between;
            padding: 14px;
            background: var(--bg-primary);
            border-radius: 8px;
            margin-top: 8px;
        }

        #selected-customer-name {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 16px;
        }

        /* Trial banner */
        .trial-banner {
            background: #fef3c7;
            border-radius: 12px;
            padding: 16px;
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .trial-banner-icon {
            font-size: 24px;
        }

        .trial-banner-content {
            flex: 1;
        }

        .trial-banner-title {
            font-weight: 600;
            color: #92400e;
            font-size: 15px;
        }

        .trial-banner-text {
            font-size: 14px;
            color: #92400e;
        }

        .trial-banner-btn {
            background: var(--accent);
            border: none;
            color: white;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.2s;
        }

        .trial-banner-btn:hover {
            background: var(--accent-hover);
        }

        /* Cloud Backup Styles */
        .cloud-backup-section {
            margin-top: 24px;
            border-top: 2px solid var(--border);
            padding-top: 24px;
        }

        .cloud-backup-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .cloud-backup-title span {
            font-size: 24px;
        }

        .backup-list {
            max-height: 300px;
            overflow-y: auto;
            margin-bottom: 16px;
        }

        .backup-item {
            background: var(--bg-primary);
            border-radius: 8px;
            padding: 16px;
            margin-bottom: 8px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .backup-info {
            flex: 1;
        }

        .backup-name {
            font-weight: 600;
            margin-bottom: 4px;
        }

        .backup-date {
            font-size: 12px;
            color: var(--text-secondary);
        }

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

        .backup-restore-btn {
            background: var(--accent);
            color: white;
            border: none;
            border-radius: 4px;
            padding: 6px 12px;
            font-size: 12px;
            cursor: pointer;
        }

        .backup-delete-btn {
            background: var(--danger);
            color: white;
            border: none;
            border-radius: 4px;
            padding: 6px 12px;
            font-size: 12px;
            cursor: pointer;
        }

        .spinner {
            border: 3px solid var(--border);
            border-top: 3px solid var(--accent);
            border-radius: 50%;
            width: 30px;
            height: 30px;
            animation: spin 1s linear infinite;
            margin: 20px auto;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }