:root {
            --primary-color: #3b82f6;
            --primary-dark: #2563eb;
            --success-color: #10b981;
            --danger-color: #ef4444;
            --danger-dark: #dc2626;
            --warning-color: #f59e0b;
            --info-color: #3b82f6;
        }

        /* Invoice preview styles */
        .invoice-preview-panel {
            margin-top: 2.5rem;
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .invoice-preview-heading {
            font-size: 1.25rem;
            font-weight: 600;
            color: #1f2937;
            margin: 0;
        }

        .invoice-preview {
            background: transparent;
            border: none;
            border-radius: 0;
            padding: 0;
            width: min(95vw, 860px);
            margin: 0 auto;
            overflow: visible;
        }

        .invoice-preview-viewport {
            width: 100%;
            overflow: visible;
        }

        .invoice-preview .page {
            width: 100%;
            max-width: 210mm;
            min-height: 297mm;
            margin: 12px auto;
            padding: 15mm 13mm 36mm 13mm;
            background: #fff;
            position: relative;
            box-sizing: border-box;
            font-family: Arial, Helvetica, "DejaVu Sans", sans-serif;
            color: #000;
        }

        .invoice-preview .title {
            font-size: 30pt;
            font-weight: 700;
            margin: 0 0 45px 0;
            letter-spacing: 0;
            text-transform: uppercase;
        }

        .invoice-preview .sender {
            font-size: 9.5pt;
            font-weight: 600;
            color: #7a7a7a;
            margin-bottom: 22px;
            min-height: 12px;
        }

        .invoice-preview .top-row {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 52px;
        }

        .invoice-preview .top-row td {
            vertical-align: top;
        }

        .invoice-preview .top-row td:last-child {
            text-align: right;
            width: 1%;
        }

        .invoice-preview .customer {
            min-width: 265px;
        }

        .invoice-preview .customer .label {
            font-size: 10pt;
            font-weight: 700;
            margin: 0 0 2mm 0;
        }

        .invoice-preview .customer .value {
            font-size: 10pt;
            font-weight: 400;
            margin: 0;
        }

        .invoice-preview .meta {
            border-collapse: collapse;
            font-size: 10pt;
            line-height: 1.35;
            min-width: 300px;
            margin-left: auto;
        }

        .invoice-preview .meta td {
            padding: 0;
            vertical-align: top;
        }

        .invoice-preview .meta td.key {
            padding-right: 30px;
            white-space: nowrap;
        }

        .invoice-preview .meta td.val {
            text-align: right;
            font-weight: 700;
            white-space: nowrap;
        }

        .invoice-preview .meta tr.spacer td {
            padding-top: 19px;
        }

        .invoice-preview .items-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 10pt;
            margin-top: 0;
        }

        .invoice-preview .items-table th,
        .invoice-preview .items-table td {
            border: 1px solid #e0e0e0;
            padding: 9px 12px;
            white-space: nowrap;
        }

        .invoice-preview .items-table thead th {
            background: #f3f3f3;
            font-weight: 700;
            font-size: 9.5pt;
            text-transform: uppercase;
            letter-spacing: 0;
            text-align: left;
        }

        .invoice-preview .items-table th:nth-child(n+2),
        .invoice-preview .items-table td:nth-child(n+2) {
            text-align: right;
        }

        .invoice-preview .items-table th:first-child,
        .invoice-preview .items-table td:first-child {
            white-space: normal;
        }

        .invoice-preview .item-description {
            font-size: 9pt;
            margin-top: 4px;
            line-height: 1.3;
            font-style: italic;
        }

        .invoice-preview .after-items {
            width: 100%;
            border-collapse: collapse;
            margin-top: 30px;
        }

        .invoice-preview .after-items td {
            vertical-align: top;
        }

        .invoice-preview .comment {
            font-size: 10pt;
            font-style: italic;
            color: #000;
            margin-top: 0;
            padding-left: 2px;
            white-space: pre-line;
        }

        .invoice-preview .note-label {
            font-style: normal;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .invoice-preview .note-value {
            font-style: italic;
        }

        .invoice-preview .totals-wrap {
            width: 340px;
        }

        .invoice-preview .totals {
            width: 100%;
            border-collapse: collapse;
            border: 1px solid #e0e0e0;
            font-size: 10pt;
        }

        .invoice-preview .totals td {
            padding: 10px 12px;
            vertical-align: middle;
        }

        .invoice-preview .totals td.label {
            font-weight: 700;
        }

        .invoice-preview .totals td.amount {
            text-align: right;
            font-weight: 400;
        }

        .invoice-preview .totals .vat .label {
            font-weight: 700;
        }

        .invoice-preview .totals .vat .label em {
            font-weight: 400;
            font-style: italic;
        }

        .invoice-preview .totals tr.payable td {
            background: #0429ee;
            color: #fff;
            font-weight: 700;
            padding-top: 11px;
            padding-bottom: 11px;
        }

        .invoice-preview .totals tr.payable td.amount {
            text-align: right;
            border-left: 1px solid rgba(255, 255, 255, 0.25);
        }

        .invoice-preview .footer {
            width: 100%;
            border-collapse: collapse;
            border-top: 1px solid #e0e0e0;
            padding-top: 26px;
            padding-bottom: 6mm;
            font-size: 9.5pt;
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            margin-top: 0;
        }

        .invoice-preview .footer td {
            padding-top: 26px;
            padding-bottom: 6mm;
            vertical-align: baseline;
        }

        .invoice-preview .footer td + td {
            padding-left: 45px;
        }

        .invoice-preview .footer .b {
            font-weight: 700;
        }

        .invoice-preview .muted {
            color: #6b7280;
            text-align: center;
            font-size: 0.9rem;
            padding: 18px 0;
        }

        @media (max-width: 900px) {
            .invoice-preview {
                width: 100%;
                padding: 0;
            }

            .invoice-preview--a4 .invoice-preview-viewport {
                max-height: 80vh;
                overflow: auto;
                -webkit-overflow-scrolling: touch;
                touch-action: pan-x pan-y;
                background: #f8fafc;
                border: 1px solid #e5e7eb;
                border-radius: 12px;
                padding: 12px;
            }

            .invoice-preview--a4 .page {
                max-width: none;
                width: 210mm;
                min-height: 297mm;
                margin: 0;
            }

            .invoice-preview:not(.invoice-preview--a4) .page {
                max-width: 100%;
                min-height: auto;
                padding: 12mm 10mm 28mm 10mm;
            }
        }

        @media (max-width: 768px) {
            .invoice-preview:not(.invoice-preview--a4) .top-row,
            .invoice-preview:not(.invoice-preview--a4) .top-row tbody,
            .invoice-preview:not(.invoice-preview--a4) .top-row tr,
            .invoice-preview:not(.invoice-preview--a4) .top-row td {
                display: block;
                width: 100%;
                text-align: left;
            }

            .invoice-preview:not(.invoice-preview--a4) .meta {
                min-width: 0;
                margin-top: 16px;
            }

            .invoice-preview:not(.invoice-preview--a4) .meta td.val {
                text-align: left;
            }

            .invoice-preview:not(.invoice-preview--a4) .totals-wrap {
                width: 100%;
                margin-top: 18px;
            }
        }

        .sticky-top-bar {
            position: sticky;
            top: 0;
            z-index: 1100;
            background: #fff;
            border-bottom: 1px solid #e5e7eb;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.5rem 1.5rem;
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
        }

        .sticky-logo img {
            width: 32px;
            height: 32px;
            object-fit: contain;
        }

        .sticky-buttons {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        
        /* AdminLTE 4 Style Body */
        body {
            background-color: rgb(233, 236, 239);
            min-height: 100vh;
            font-family: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            color: #495057;
        }
        
        /* AdminLTE 4 Card Style */
        .invoice-generator {
            background: #ffffff;
            border-radius: 0.5rem;
            box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
            border: 1px solid rgba(0, 0, 0, 0.125);
            overflow: hidden;
        }
        
        .invoice-header {
            background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
            color: white;
            padding: 2rem 1.5rem;
            text-align: center;
            border-bottom: 1px solid rgba(0, 0, 0, 0.125);
        }
        
        .invoice-header h1 {
            font-size: 1.75rem;
            font-weight: 600;
            margin: 0 0 0.5rem 0;
            letter-spacing: -0.025em;
        }
        
        .invoice-header p {
            font-size: 1rem;
            margin: 0;
            opacity: 0.9;
        }
        
        .invoice-container {
            padding: 1.5rem;
        }
        
        /* Primary Sections - Bright and Visible */
        .form-section-primary {
            background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
            border: 2px solid #3b82f6;
            border-radius: 12px;
            padding: 24px;
            margin-bottom: 24px;
        }
        
        .form-section-primary .section-title {
            color: #1e40af;
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        
        /* AdminLTE 4 Section Title */
        .section-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: #343a40;
            margin: 1.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #3b82f6;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .section-title i {
            color: #3b82f6;
            font-size: 1.25rem;
        }
        
        /* AdminLTE 4 Form Group */
        .form-group {
            margin-bottom: 1.25rem;
        }
        
        .form-label {
            display: block;
            font-weight: 500;
            color: #495057;
            margin-bottom: 0.5rem;
            font-size: 0.9375rem;
        }
        
        .form-label .required {
            color: #ef4444;
        }
        
        /* AdminLTE 4 Form Control */
        .form-control {
            border: 1px solid #dee2e6;
            border-radius: 0.25rem;
            padding: 0.5rem 0.75rem;
            font-size: 0.9375rem;
            transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
            background-color: #fff;
        }
        
        .form-control:focus {
            border-color: #3b82f6;
            box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.25);
            outline: none;
        }
        
        .form-control.is-invalid {
            border-color: #ef4444;
        }
        
        .form-control:disabled {
            background-color: #e9ecef;
            opacity: 1;
        }
        
        .form-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1rem;
        }
        
        .form-row-4col {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
        }
        
        /* Collapsible Sections */
        .form-section-collapsible {
            background: #f9fafb;
            border: 1px solid #e5e7eb;
            border-radius: 8px;
            padding: 16px;
            margin-top: 32px;
        }
        
        .btn-collapse {
            width: 100%;
            background: white;
            border: 2px dashed #d1d5db;
            border-radius: 8px;
            padding: 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            font-size: 1rem;
            font-weight: 600;
            color: #6b7280;
            transition: all 0.3s ease;
        }
        
        .btn-collapse:hover {
            background: #f9fafb;
            border-color: #9ca3af;
            color: #374151;
        }
        
        .btn-collapse.active {
            background: #eff6ff;
            border-color: #3b82f6;
            color: #1e40af;
            border-style: solid;
        }
        
        .collapse-icon {
            transition: transform 0.3s ease;
        }
        
        .btn-collapse.active .collapse-icon {
            transform: rotate(180deg);
        }
        
        /* Optional Blocks */
        .optional-block {
            margin: 16px 0;
            padding: 12px;
            background: white;
            border-radius: 8px;
            border: 1px solid #e5e7eb;
        }
        
        .btn-toggle-block {
            width: 100%;
            background: transparent;
            border: none;
            padding: 12px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #6b7280;
            text-align: left;
            transition: all 0.2s ease;
            border-radius: 6px;
        }
        
        .btn-toggle-block:hover {
            background: #f3f4f6;
            color: #374151;
        }
        
        .btn-toggle-block.active {
            color: #ef4444;
        }
        
        .btn-toggle-block i {
            font-size: 1.2rem;
            transition: all 0.2s ease;
        }
        
        .toggle-block-content {
            margin-top: 16px;
            padding: 16px;
            background: #f9fafb;
            border-radius: 6px;
            animation: slideDown 0.3s ease;
        }
        
        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .block-title {
            font-size: 1rem;
            font-weight: 600;
            color: #374151;
            margin: 0 0 16px 0;
        }
        
        /* AdminLTE 4 Card Sections */
        .invoice-items-section,
        .totals-section {
            background: #f8f9fa;
            border: 1px solid #dee2e6;
            border-radius: 0.25rem;
            padding: 1rem;
            margin: 1.5rem 0;
        }
        
        /* AdminLTE 4 Item Row */
        .item-row {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr auto;
            gap: 0.75rem;
            margin-bottom: 1rem;
            align-items: flex-end;
        }
        
        .item-row .form-control {
            margin-bottom: 0;
        }
        
        /* AdminLTE 4 Buttons */
        .btn-remove-item {
            background: #ef4444;
            color: white;
            border: none;
            border-radius: 0.25rem;
            padding: 0.375rem 0.75rem;
            cursor: pointer;
            transition: all 0.15s ease-in-out;
            font-size: 0.875rem;
        }
        
        .btn-remove-item:hover {
            background: #dc2626;
        }
        
        .btn-add-item {
            background: #10b981;
            color: white;
            border: none;
            border-radius: 0.25rem;
            padding: 0.5rem 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.15s ease-in-out;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.875rem;
        }
        
        .btn-add-item:hover {
            background: #059669;
        }
        
        /* AdminLTE 4 Totals */
        .total-row {
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 1rem;
            margin-bottom: 0.5rem;
            font-size: 0.9375rem;
            align-items: center;
        }
        
        .total-row.grand-total {
            border-top: 2px solid #dee2e6;
            border-bottom: 2px solid #dee2e6;
            padding: 0.75rem 0;
            margin: 1rem 0;
            background: #fff;
            border-radius: 0.25rem;
            padding: 0.75rem;
        }
        
        .total-row.grand-total .label {
            font-size: 1.125rem;
            font-weight: 600;
            color: #3b82f6;
        }
        
        .total-row.grand-total .value {
            font-size: 1.125rem;
            font-weight: 600;
            color: #3b82f6;
        }
        
        .total-row .label {
            text-align: right;
            font-weight: 500;
            color: #6c757d;
        }
        
        .total-row .value {
            text-align: left;
            color: #343a40;
            font-weight: 500;
        }
        
        /* Total Box - Large and Bright */
        .invoice-total-box {
            background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
            color: white;
            padding: 20px 24px;
            border-radius: 12px;
            margin: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
        }
        
        .total-label {
            font-size: 1.1rem;
            font-weight: 600;
        }
        
        .total-value {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.025em;
        }
        
        /* Generate Button - Large and Red */
        .btn-generate {
            width: 100%;
            padding: 20px 32px;
            font-size: 1.25rem;
            font-weight: 700;
            background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
            border: none;
            border-radius: 12px;
            color: white;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
            text-transform: uppercase;
            letter-spacing: 0.025em;
        }
        
        .btn-generate:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(239, 68, 68, 0.5);
        }
        
        .btn-generate:active {
            transform: translateY(0);
        }
        
        /* AdminLTE 4 Footer */
        .footer {
            padding: 1.5rem;
            text-align: center;
            margin-top: 2rem;
            border-top: 1px solid #dee2e6;
            color: #6c757d;
        }
        
        .footer p {
            color: #1a202c;
            font-weight: 500;
        }
        
        .footer-content {
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .language-selector {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .language-selector select {
            border: 1px solid #dee2e6;
            border-radius: 0.25rem;
            padding: 0.375rem 0.75rem;
            font-size: 0.875rem;
            cursor: pointer;
            background-color: #fff;
            transition: border-color 0.15s ease-in-out;
        }
        
        .language-selector select:hover,
        .language-selector select:focus {
            border-color: #3b82f6;
            outline: none;
        }
        
        /* AdminLTE 4 Validation */
        .invalid-feedback {
            display: none;
            color: #ef4444;
            font-size: 0.875rem;
            margin-top: 0.25rem;
        }
        
        .form-control.is-invalid ~ .invalid-feedback {
            display: block;
        }
        
        /* AdminLTE 4 Help Text */
        .help-text {
            font-size: 0.8125rem;
            color: #6c757d;
            margin-top: 0.25rem;
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        
        .form-hint-center {
            text-align: center;
            margin-top: 12px;
            font-size: 0.875rem;
            color: #6b7280;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }
        
        /* AdminLTE 4 Loading Spinner */
        .loading-spinner {
            display: inline-block;
            width: 1rem;
            height: 1rem;
            border: 0.2em solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-top-color: white;
            animation: spin 0.6s linear infinite;
        }
        
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        .btn.loading .loading-spinner {
            display: inline-block;
            margin-right: 0.5rem;
        }
        
        /* Hidden utility */
        .hidden {
            display: none !important;
        }
        
        /* AdminLTE 4 Responsive */
        @media (max-width: 768px) {
            .invoice-header {
                padding: 1.5rem 1rem;
            }
            
            .invoice-header h1 {
                font-size: 1.5rem;
            }
            
            .invoice-container {
                padding: 1rem;
            }
            
            .form-row,
            .form-row-4col {
                grid-template-columns: 1fr;
                gap: 0.75rem;
            }
            
            .item-row {
                grid-template-columns: 1fr;
                gap: 0.5rem;
            }
            
            .item-row .form-group {
                margin-bottom: 0.75rem;
            }
            
            .item-row input {
                font-size: 1rem;
                padding: 0.75rem 0.875rem;
            }
            
            .item-row button {
                padding: 0.75rem 1rem;
                font-size: 1rem;
            }
            
            .total-value {
                font-size: 1.5rem;
            }
            
            .btn-generate {
                font-size: 1rem;
                padding: 16px 24px;
            }
            
            .section-title {
                font-size: 1rem;
                margin: 1.25rem 0 0.875rem;
            }
            
            .form-control {
                padding: 0.75rem 0.875rem;
                font-size: 1rem;
            }
            
            .invoice-items-section,
            .totals-section {
                padding: 0.875rem;
                margin: 1.25rem 0;
            }
            
            .total-row {
                grid-template-columns: 1fr;
                gap: 0.5rem;
                font-size: 1rem;
            }
            
            .total-row .label {
                text-align: left;
            }
            
            .form-section-primary {
                padding: 16px;
                margin-bottom: 16px;
            }
            
            .form-section-collapsible {
                padding: 12px;
                margin-top: 24px;
            }
            
            .optional-block {
                padding: 8px;
            }
            
            .invoice-total-box {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }

        /* SEO H1 Styles - Ensure single H1 for search engines */
        .seo-h1 {
            font-size: 1.75rem;
            font-weight: 600;
            margin: 0 0 0.5rem 0;
            letter-spacing: -0.025em;
            display: block;
            visibility: visible !important;
            opacity: 1 !important;
            position: static !important;
            height: auto !important;
            width: auto !important;
            overflow: visible !important;
        }

        .seo-h1.hidden,
        .seo-h1[style*="display: none"],
        .seo-h1[style*="visibility: hidden"] {
            display: block !important;
            visibility: visible !important;
        }

        /* FAQ Section Styles */
        .faq-section {
            padding: 4rem 0;
            background: #f8f9fa;
        }

        .faq-section .section-heading {
            font-size: 2rem;
            font-weight: 700;
            color: #2c3e50;
        }

        .faq-section .accordion-button {
            font-weight: 600;
            font-size: 1rem;
        }

        .faq-section .accordion-button:not(.collapsed) {
            background-color: #667eea;
            color: white;
        }

        .faq-section .accordion-body {
            line-height: 1.7;
        }

        /* Why WhatsApp Section */
        .why-whatsapp-section {
            padding: 5rem 0;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
        }

        .why-whatsapp-section h2 {
            font-size: 2rem;
            font-weight: 700;
        }

        .why-whatsapp-section .feature-list {
            list-style: none;
            padding: 0;
        }

        .why-whatsapp-section .feature-list li {
            margin-bottom: 1.5rem;
            display: flex;
            align-items: flex-start;
            gap: 1rem;
        }

        .why-whatsapp-section .feature-list i {
            font-size: 1.5rem;
            flex-shrink: 0;
            margin-top: 0.2rem;
        }

        .comparison-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }

        .comparison-card h3 {
            color: #2c3e50;
            font-size: 1.3rem;
        }

        .comparison-table td, .comparison-table th {
            padding: 0.75rem;
            color: #2c3e50;
        }

        .comparison-table thead th {
            font-weight: 600;
            border-bottom: 2px solid #dee2e6;
        }

        @media (max-width: 768px) {
            .why-whatsapp-section {
                padding: 3rem 0;
            }

            .why-whatsapp-section h2 {
                font-size: 1.5rem;
            }

            .comparison-card {
                padding: 1.5rem;
            }

            .comparison-card h3 {
                font-size: 1.1rem;
            }

            .comparison-table td, .comparison-table th {
                padding: 0.5rem;
                font-size: 0.9rem;
            }
        }

        /* Stats Section */
        .stats-section {
            padding: 5rem 0;
            background: #ffffff;
        }

        .stats-section .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: #2c3e50;
            margin-bottom: 3rem;
            text-align: center;
        }

        .stat-card {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 16px;
            padding: 2.5rem 2rem;
            text-align: center;
            color: white;
            box-shadow: 0 10px 40px rgba(102, 126, 234, 0.3);
            height: 100%;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 50px rgba(102, 126, 234, 0.4);
        }

        .stat-value {
            font-size: 4rem;
            font-weight: 800;
            line-height: 1;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            font-size: 1.1rem;
            font-weight: 500;
            opacity: 0.95;
        }

        .stat-unit {
            font-size: 1.25rem;
            font-weight: 600;
            display: block;
            margin-top: 0.25rem;
        }

        /* Testimonials */
        .testimonials-section {
            padding: 4rem 0;
            background: #f8f9fa;
        }

        .testimonial-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            height: 100%;
            border-left: 4px solid #667eea;
        }

        .testimonial-text {
            font-size: 1.1rem;
            line-height: 1.7;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            font-style: italic;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .testimonial-avatar {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 700;
            font-size: 1.25rem;
        }

        .testimonial-name {
            font-weight: 600;
            color: #2c3e50;
            margin-bottom: 0.25rem;
        }

        .testimonial-role {
            font-size: 0.9rem;
            color: #6c757d;
        }

        /* Testimonials Section Title */
        .testimonials-section .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: #2c3e50;
            margin-bottom: 2.5rem;
            text-align: center;
        }

        @media (max-width: 768px) {
            .stats-section {
                padding: 3rem 0;
            }

            .stats-section .section-title {
                font-size: 1.75rem;
                margin-bottom: 2rem;
            }

            .stat-card {
                padding: 2rem 1.5rem;
                margin-bottom: 1.5rem;
            }

            .stat-value {
                font-size: 2.5rem;
            }

            .stat-label {
                font-size: 1rem;
            }

            .testimonials-section {
                padding: 3rem 0;
            }

            .testimonials-section .section-title {
                font-size: 1.5rem;
                margin-bottom: 1.5rem;
            }

            .testimonial-card {
                padding: 1.5rem;
            }

            .testimonial-text {
                font-size: 1rem;
            }
        }