/* Custom styles for advanced features */

        :root {
            --bg-primary: #ffffff;
            --bg-secondary: #f3f4f6;
            --text-primary: #111827;
            --text-secondary: #4b5563;
            --accent-primary: #ab183d;
            --accent-secondary: #8a0f2f;
            /* Invoice Template Variables */
            --invoice-primary: #ab183d;
            --invoice-secondary: #8a0f2f;
            --invoice-border: 2px solid #ab183d;
            --invoice-border-radius: 12px;
            --invoice-header-bg: #f8fafc;
            --invoice-font-size: 14px;
            --invoice-show-border: true;
        }

        * {
            font-family: 'Inter', sans-serif;
        }

        .dark-mode {
            --bg-primary: #1f2937;
            --bg-secondary: #111827;
            --text-primary: #f9fafb;
            --text-secondary: #d1d5db;
            --accent-primary: #c41d47;
            --accent-secondary: #d9304f;
        }

        body {
            background-color: var(--bg-secondary);
            color: var(--text-primary);
            transition: background-color 0.3s, color 0.3s;
        }

        .card {
            background-color: var(--bg-primary);
            border-radius: 1rem;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            transition: all 0.3s ease;
        }

        .card:hover {
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            transform: translateY(-2px);
        }

        .gradient-primary {
            background: linear-gradient(135deg, #ab183d 0%, #8a0f2f 100%);
        }

        .gradient-success {
            background: linear-gradient(135deg, #059669 0%, #047857 100%);
        }

        .gradient-warning {
            background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
        }

        .gradient-danger {
            background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
        }

        /* Animated Badge Styles */

        .smart-badge {
            background: linear-gradient(135deg, #ff6b6b, #4ecdc4, #45b7d1, #96c93d);
            background-size: 300% 300%;
            animation: gradientFlow 5s ease infinite;
            padding: 8px 16px;
            border-radius: 30px;
            color: white;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            position: relative;
            overflow: hidden;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .smart-badge:hover {
            transform: scale(1.05);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
            border-color: rgba(255, 255, 255, 0.8);
        }

        .smart-badge::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient( 45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
            transform: rotate(45deg);
            animation: shine 3s infinite;
        }

        @keyframes gradientFlow {
            0% {
                background-position: 0% 50%;
            }
            50% {
                background-position: 100% 50%;
            }
            100% {
                background-position: 0% 50%;
            }
        }

        @keyframes shine {
            0% {
                left: -50%;
                top: -50%;
            }
            100% {
                left: 150%;
                top: 150%;
            }
        }

        .badge-text {
            display: flex;
            align-items: center;
            gap: 8px;
            position: relative;
            z-index: 2;
        }

        .badge-text i {
            font-size: 1.2rem;
            filter: drop-shadow(0 2px 2px rgba(0, 0, 0, 0.2));
        }

        /* Tab styles */

        .tab-active {
            border-bottom: 3px solid #ab183d;
            color: #ab183d;
            font-weight: 600;
            background-color: rgba(37, 99, 235, 0.1);
        }

        .dark-mode .tab-active {
            border-bottom-color: #d9304f;
            color: #d9304f;
            background-color: rgba(96, 165, 250, 0.1);
        }

        /* Toast animation */

        .toast {
            animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s;
        }

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

        @keyframes fadeOut {
            from {
                opacity: 1;
            }
            to {
                opacity: 0;
            }
        }

        /* Modal backdrop */

        .modal-backdrop {
            background-color: rgba(0, 0, 0, 0.5);
            backdrop-filter: blur(4px);
        }

        /* Custom scrollbar */

        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: #f1f1f1;
        }

        ::-webkit-scrollbar-thumb {
            background: #ab183d;
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: #8a0f2f;
        }

        /* Print styles */

        @media print {
            .no-print {
                display: none !important;
            }
            .print-area {
                background: white;
                color: black;
                padding: 10px;
                max-height: 100vh;
                overflow: hidden;
            }
            body * {
                visibility: hidden;
            }
            .bill-print-container,
            .bill-print-container * {
                visibility: visible;
            }
            .bill-print-container {
                position: absolute;
                left: 0;
                top: 0;
                width: 100%;
                background: white;
                page-break-inside: avoid;
                page-break-after: avoid;
                page-break-before: avoid;
            }
        }

        /* Bill container with dynamic border */

        .bill-container {
            border: var(--invoice-show-border) ? var(--invoice-border): none;
            border-radius: var(--invoice-border-radius);
            padding: 15px;
            background: white;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            max-width: 800px;
            margin: 0 auto;
            font-size: var(--invoice-font-size);
            page-break-inside: avoid;
            break-inside: avoid;
        }

        /* Single page bill */

        .single-page-bill {
            max-height: 90vh;
            overflow-y: auto;
            padding: 10px;
        }

        /* QR Code styles */

        .qr-preview {
            width: 80px;
            height: 80px;
            object-fit: contain;
            border: 1px solid #e2e8f0;
            border-radius: 8px;
            cursor: pointer;
        }

        .qr-large {
            width: 120px;
            height: 120px;
            object-fit: contain;
        }

        /* Loading spinner */

        .spinner {
            border: 3px solid #f3f3f3;
            border-top: 3px solid #ab183d;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            animation: spin 1s linear infinite;
        }

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

        /* Auto-fill highlight */

        .auto-fill-highlight {
            background-color: rgba(37, 99, 235, 0.1);
            transition: background-color 0.3s;
        }

        /* Print Layout Styles */

        .print-layout {
            max-width: 800px;
            margin: 0 auto;
            background: white;
            padding: 20px;
            border-radius: 16px;
            page-break-inside: avoid;
        }

        .print-header {
            text-align: center;
            margin-bottom: 15px;
            border-bottom: 2px dashed var(--invoice-primary);
            padding-bottom: 10px;
        }

        .print-header h1 {
            color: var(--invoice-primary);
            font-size: 24px;
            font-weight: bold;
            margin-bottom: 5px;
        }

        .print-details {
            background: var(--invoice-header-bg);
            padding: 10px;
            border-radius: 8px;
            margin-bottom: 15px;
        }

        .print-table {
            width: 100%;
            border-collapse: collapse;
            margin: 15px 0;
            page-break-inside: avoid;
        }

        .print-table th {
            background: var(--invoice-primary);
            color: white;
            padding: 8px;
            font-weight: 600;
            font-size: 13px;
        }

        .print-table td {
            padding: 6px 8px;
            border: 1px solid #e2e8f0;
            font-size: 12px;
        }

        .print-table tr:nth-child(even) {
            background: #f8fafc;
        }

        .print-total {
            text-align: right;
            font-size: 16px;
            font-weight: bold;
            color: var(--invoice-primary);
            margin-top: 15px;
            padding-top: 10px;
            border-top: 2px dashed var(--invoice-primary);
        }

        .print-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 15px;
            padding-top: 10px;
            border-top: 1px solid #e2e8f0;
            font-size: 10px;
            color: #64748b;
        }

        .qr-section {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .qr-text {
            font-size: 9px;
            line-height: 1.2;
        }

        .action-buttons {
            display: flex;
            gap: 8px;
            justify-content: center;
            margin-top: 15px;
            flex-wrap: wrap;
        }

        .action-btn {
            padding: 8px 16px;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            border: none;
            color: white;
            font-size: 13px;
        }

        .action-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }

        .btn-print {
            background: #ab183d;
        }

        .btn-pdf {
            background: #dc2626;
        }

        .btn-whatsapp {
            background: #25D366;
        }

        .btn-copy {
            background: #6b7280;
        }

        .btn-new {
            background: #059669;
        }

        /* Color picker styles */

        .color-option {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            cursor: pointer;
            border: 2px solid transparent;
            transition: all 0.3s;
        }

        .color-option:hover {
            transform: scale(1.1);
        }

        .color-option.selected {
            border-color: #000;
            transform: scale(1.1);
        }

        /* Template preview */

        .template-preview {
            border: 2px solid #e2e8f0;
            border-radius: 8px;
            padding: 10px;
            margin-bottom: 10px;
            cursor: pointer;
            transition: all 0.3s;
        }

        .template-preview:hover {
            border-color: var(--invoice-primary);
            transform: translateY(-2px);
        }

        .template-preview.selected {
            border-color: var(--invoice-primary);
            background: #fbe9ee;
        }