/* CSS Variables for Accessibility and Theming */
        :root {
            --primary-color: #2E7D32;
            --primary-dark: #1B5E20;
            --primary-light: #4CAF50;
            --secondary-color: #FF6B35;
            --accent-color: #FFC107;
            --success-color: #4CAF50;
            --warning-color: #FF9800;
            --error-color: #F44336;
            --text-primary: #212121;
            --text-secondary: #757575;
            --text-light: #FFFFFF;
            --bg-primary: #FFFFFF;
            --bg-secondary: #F5F5F5;
            --bg-tertiary: #E0E0E0;
            --border-color: #BDBDBD;
            --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
            --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
            --shadow-lg: 0 8px 16px rgba(0,0,0,0.2);
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
        }
        
        /* High Contrast Mode Support */
        @media (prefers-contrast: high) {
            :root {
                --primary-color: #000000;
                --text-primary: #000000;
                --bg-primary: #FFFFFF;
                --border-color: #000000;
            }
        }
        
        /* Base Styles */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.6;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            font-size: 16px;
        }
        
        /* Skip to Content Link for Accessibility */
        .skip-link {
            position: absolute;
            top: -40px;
            left: 0;
            background: var(--primary-color);
            color: var(--text-light);
            padding: 8px;
            text-decoration: none;
            z-index: 100;
        }
        
        .skip-link:focus {
            top: 0;
        }
        
        /* Container */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
         .calculator-section {
            background: var(--bg-secondary);
            padding: 2rem;
            border-radius: 12px;
            margin: 2rem 0;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        
        /* Header Styles */
        header {
            background: var(--primary-color);
            color: var(--text-light);
            padding: 1rem 0;
            box-shadow: var(--shadow-md);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        
        .nav-brand {
            font-size: 1.5rem;
            font-weight: bold;
            text-decoration: none;
            color: var(--text-light);
        }
        
        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }
        
        .nav-links a {
            color: var(--text-light);
            text-decoration: none;
            transition: opacity var(--transition-fast);
        }
        
        .nav-links a:hover,
        .nav-links a:focus {
            opacity: 0.8;
            text-decoration: underline;
        }
        
        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
            color: var(--text-light);
            padding: 4rem 0;
            text-align: center;
        }
        
        .hero h1 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            font-weight: 700;
        }
        
        .hero-subtitle {
            font-size: 1.25rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }
        
        .cta-button {
            display: inline-block;
            background: var(--accent-color);
            color: var(--text-primary);
            padding: 1rem 2rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: bold;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-md);
        }
        
        .cta-button:hover,
        .cta-button:focus {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            background: #FFD54F;
        }
        
        /* Calculator Section */
        .calculator-section {
            background: var(--bg-secondary);
            padding: 2rem;
            border-radius: 12px;
            margin: 2rem 0;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        
        .calculator-section h2 {
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            font-size: 1.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .section-number {
            background: var(--primary-color);
            color: var(--text-light);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }
        
        /* Tier Cards */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            margin-top: 1.5rem;
        }
        
        .tier-card {
            background: var(--bg-primary);
            border: 2px solid transparent;
            border-radius: 12px;
            padding: 1.5rem;
            cursor: pointer;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        
        .tier-card:hover,
        .tier-card:focus-within {
            border-color: var(--primary-color);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        
        .tier-card.selected {
            border-color: var(--primary-color);
            background: #E8F5E9;
        }
        
        .tier-badge {
            position: absolute;
            top: 10px;
            right: 10px;
            background: var(--secondary-color);
            color: var(--text-light);
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.875rem;
            font-weight: bold;
        }
        
        .tier-card h3 {
            color: var(--primary-color);
            margin-bottom: 0.5rem;
            font-size: 1.25rem;
        }
        
        .tier-metrics {
            margin: 1rem 0;
            font-size: 0.875rem;
            color: var(--text-secondary);
        }
        
        .tier-price {
            font-size: 1.5rem;
            color: var(--primary-color);
            font-weight: bold;
            margin-top: 1rem;
        }
        
        /* Runtime Options */
        .runtime-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 1rem;
            margin-top: 1.5rem;
        }
        
        .runtime-option {
            background: var(--bg-primary);
            border: 2px solid var(--border-color);
            border-radius: 8px;
            padding: 1rem;
            text-align: center;
            cursor: pointer;
            transition: all var(--transition-normal);
        }
        
        .runtime-option:hover,
        .runtime-option:focus {
            border-color: var(--primary-color);
            background: var(--bg-secondary);
        }
        
        .runtime-option.selected {
            background: var(--primary-color);
            color: var(--text-light);
            border-color: var(--primary-color);
        }
        
        .runtime-duration {
            font-size: 1.25rem;
            font-weight: bold;
            display: block;
        }
        
        .runtime-discount {
            font-size: 0.875rem;
            margin-top: 0.25rem;
            opacity: 0.8;
        }
        
        /* Addon Options */
        .addon-group {
            background: var(--bg-primary);
            border-radius: 8px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: var(--shadow-sm);
        }
        
        .addon-group h3 {
            color: var(--primary-dark);
            margin-bottom: 1rem;
            font-size: 1.25rem;
        }
        
        .addon-item {
            display: flex;
            align-items: center;
            padding: 0.75rem;
            margin-bottom: 0.5rem;
            border: 1px solid var(--bg-tertiary);
            border-radius: 6px;
            transition: all var(--transition-fast);
        }
        
        .addon-item:hover {
            background: var(--bg-secondary);
            border-color: var(--primary-light);
        }
        
        .addon-checkbox,
        .addon-radio {
            width: 20px;
            height: 20px;
            margin-right: 1rem;
            cursor: pointer;
        }
        
        .addon-label {
            flex: 1;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .addon-price {
            color: var(--primary-color);
            font-weight: bold;
            font-size: 0.875rem;
        }
        
        /* Backlink Counter */
        .backlink-counter {
            background: var(--bg-secondary);
            padding: 1rem;
            border-radius: 6px;
            margin-top: 1rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        
        .counter-controls {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        
        .counter-btn {
            background: var(--primary-color);
            color: var(--text-light);
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            cursor: pointer;
            font-size: 1.25rem;
            transition: all var(--transition-fast);
        }
        
        .counter-btn:hover:not(:disabled) {
            background: var(--primary-dark);
            transform: scale(1.1);
        }
        
        .counter-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }
        
        .counter-value {
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--primary-color);
            min-width: 40px;
            text-align: center;
        }
        
        /* Price Summary */
        .price-summary {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
            color: var(--text-light);
            padding: 2rem;
            border-radius: 12px;
            margin: 2rem 0;
            box-shadow: var(--shadow-lg);
        }
        
        .price-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        
        .price-item {
            text-align: center;
        }
        
        .price-label {
            font-size: 0.875rem;
            opacity: 0.9;
            margin-bottom: 0.5rem;
        }
        
        .price-value {
            font-size: 2rem;
            font-weight: bold;
        }
        
        .price-period {
            font-size: 0.875rem;
            opacity: 0.8;
        }
        
        /* Order Summary */
        .order-summary {
            background: var(--bg-primary);
            color: var(--text-primary);
            padding: 2rem;
            border-radius: 12px;
            margin-top: 2rem;
        }
        
        .order-summary h3 {
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            font-size: 1.5rem;
        }
        
        .summary-line {
            display: flex;
            justify-content: space-between;
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--bg-tertiary);
        }
        
        .summary-line:last-child {
            border-bottom: none;
        }
        
        .summary-total {
            font-size: 1.25rem;
            font-weight: bold;
            color: var(--primary-color);
            margin-top: 1rem;
            padding-top: 1rem;
            border-top: 2px solid var(--primary-color);
        }
        
        /* Tax Section */
        .tax-section {
            background: var(--bg-secondary);
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
        }
        
        .tax-toggle {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        
        .tax-selector {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .tax-selector select {
            padding: 0.5rem;
            border-radius: 4px;
            border: 1px solid var(--border-color);
            font-size: 1rem;
        }
        
        /* Share Widget */
        .share-widget {
            position: fixed;
            right: 20px;
            bottom: 20px;
            background: var(--bg-primary);
            border-radius: 50px;
            box-shadow: var(--shadow-lg);
            padding: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            z-index: 999;
            transition: all var(--transition-normal);
        }
        
        .share-widget.expanded {
            border-radius: 12px;
            padding: 1rem 1.5rem;
        }
        
        .share-toggle {
            background: var(--primary-color);
            color: var(--text-light);
            border: none;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            cursor: pointer;
            font-size: 1.5rem;
            transition: all var(--transition-fast);
        }
        
        .share-toggle:hover {
            background: var(--primary-dark);
            transform: scale(1.1);
        }
        
        .share-buttons {
            display: none;
            gap: 0.5rem;
        }
        
        .share-widget.expanded .share-buttons {
            display: flex;
        }
        
        .share-btn {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            padding: 0.5rem 1rem;
            border-radius: 25px;
            cursor: pointer;
            font-size: 0.875rem;
            transition: all var(--transition-fast);
            text-decoration: none;
            color: var(--text-primary);
            white-space: nowrap;
        }
        
        .share-btn:hover {
            background: var(--primary-light);
            color: var(--text-light);
            border-color: var(--primary-light);
        }
        
        /* CTA Section */
        .cta-section {
            text-align: center;
            margin: 3rem 0;
        }
        
        .book-now-btn {
            background: var(--secondary-color);
            color: var(--text-light);
            padding: 1.25rem 3rem;
            font-size: 1.25rem;
            font-weight: bold;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-lg);
            text-decoration: none;
            display: inline-block;
        }
        
        .book-now-btn:hover,
        .book-now-btn:focus {
            background: #E85A2C;
            transform: translateY(-3px);
            box-shadow: 0 12px 24px rgba(0,0,0,0.25);
        }
        
        /* Export Actions */
        .export-actions {
            margin-top: 1rem;
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        .export-btn {
            background: var(--primary-color);
            color: var(--text-light);
            padding: 0.75rem 2rem;
            font-size: 1rem;
            font-weight: bold;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-md);
            text-decoration: none;
            display: inline-block;
        }
        
        .export-btn:hover,
        .export-btn:focus {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        
        /* Order Summary Modal */
        .modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 9999;
            overflow-y: auto;
        }
        
        .modal-overlay.active {
            display: block;
        }
        
        .modal-content {
            background: var(--bg-primary);
            margin: 2rem auto;
            padding: 2rem;
            width: 90%;
            max-width: 800px;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        
        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 2px solid var(--primary-color);
        }
        
        .modal-header h2 {
            color: var(--primary-color);
            margin: 0;
        }
        
        .modal-close {
            background: none;
            border: none;
            font-size: 2rem;
            cursor: pointer;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        
        .modal-close:hover {
            color: var(--error-color);
        }
        
        .order-detail-section {
            margin-bottom: 2rem;
        }
        
        .order-detail-section h3 {
            color: var(--primary-dark);
            margin-bottom: 1rem;
            font-size: 1.25rem;
            border-bottom: 1px solid var(--bg-tertiary);
            padding-bottom: 0.5rem;
        }
        
        .order-detail-item {
            padding: 0.5rem 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .order-detail-label {
            color: var(--text-secondary);
        }
        
        .order-detail-value {
            font-weight: bold;
            color: var(--text-primary);
        }
        
        .print-btn {
            background: var(--success-color);
            color: var(--text-light);
            padding: 1rem 2rem;
            font-size: 1.125rem;
            font-weight: bold;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-md);
            display: block;
            margin: 2rem auto 0;
        }
        
        .print-btn:hover {
            background: #388E3C;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        
        /* Trust Badges */
        .trust-section {
            background: var(--bg-secondary);
            padding: 3rem 0;
            margin-top: 3rem;
        }
        
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            text-align: center;
        }
        
        .trust-item {
            padding: 1rem;
        }
        
        .trust-icon {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        
        .trust-value {
            font-size: 2rem;
            font-weight: bold;
            color: var(--primary-dark);
        }
        
        .trust-label {
            color: var(--text-secondary);
            margin-top: 0.5rem;
        }
        
        /* Footer */
        footer {
            background: var(--text-primary);
            color: var(--text-light);
            padding: 2rem 0;
            margin-top: 4rem;
        }
        
        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 2rem;
        }
        
        .footer-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }
        
        .footer-links a {
            color: var(--text-light);
            text-decoration: none;
            transition: opacity var(--transition-fast);
        }
        
        .footer-links a:hover,
        .footer-links a:focus {
            opacity: 0.8;
            text-decoration: underline;
        }
        
        .footer-policy {
            margin-top: 1rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        
        /* Tooltip Styles */
        .tooltip {
            position: relative;
            display: inline-block;
        }
        
        .tooltip-icon {
            display: inline-block;
            width: 16px;
            height: 16px;
            background: var(--primary-color);
            color: var(--text-light);
            border-radius: 50%;
            font-size: 0.75rem;
            text-align: center;
            line-height: 16px;
            margin-left: 0.25rem;
            cursor: help;
        }
        
        .tooltip-content {
            visibility: hidden;
            width: 250px;
            background-color: var(--text-primary);
            color: var(--text-light);
            text-align: left;
            border-radius: 6px;
            padding: 0.75rem;
            position: absolute;
            z-index: 1;
            bottom: 125%;
            left: 50%;
            margin-left: -125px;
            opacity: 0;
            transition: opacity var(--transition-fast);
            font-size: 0.875rem;
            line-height: 1.4;
        }
        
        .tooltip:hover .tooltip-content {
            visibility: visible;
            opacity: 1;
        }
        
        .tooltip-content::after {
            content: "";
            position: absolute;
            top: 100%;
            left: 50%;
            margin-left: -5px;
            border-width: 5px;
            border-style: solid;
            border-color: var(--text-primary) transparent transparent transparent;
        }
        
        /* Copy Success Message */
        .copy-success {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: var(--success-color);
            color: var(--text-light);
            padding: 1rem 2rem;
            border-radius: 8px;
            box-shadow: var(--shadow-lg);
            z-index: 10000;
            opacity: 0;
            transition: opacity var(--transition-fast);
        }
        
        .copy-success.show {
            opacity: 1;
        }
        
        /* Dynamic Price Display */
        .price-display {
            font-weight: bold;
            color: var(--primary-color);
        }
        
        /* Print Styles */
        @media print {
            /* Hide non-essential elements */
            header, footer, .cta-section, .trust-section, .share-widget, 
            .modal-close, .print-btn, .nav-links, .tax-section, 
            .calculator-section, .price-summary, .export-actions {
                display: none !important;
            }
            
            /* Show only the modal content */
            .modal-overlay {
                position: static !important;
                background: none !important;
                display: block !important;
            }
            
            .modal-content {
                box-shadow: none !important;
                margin: 0 !important;
                padding: 20px !important;
                width: 100% !important;
                max-width: none !important;
            }
            
            /* Ensure good print layout */
            body {
                font-size: 12pt;
                line-height: 1.5;
                color: #000;
                background: #fff;
            }
            
            .order-detail-section {
                page-break-inside: avoid;
                margin-bottom: 1.5rem;
            }
            
            .order-detail-section h3 {
                font-size: 14pt;
                margin-bottom: 0.5rem;
                color: #000;
            }
            
            .order-detail-item {
                padding: 0.25rem 0;
            }
            
            .order-detail-label,
            .order-detail-value {
                color: #000 !important;
            }
            
            /* Add print header */
            .modal-header::before {
                content: "Guest Post Order Summary";
                font-size: 18pt;
                font-weight: bold;
                display: block;
                margin-bottom: 1rem;
            }
            
            /* Add print footer */
            .modal-content::after {
                content: "Generated from ArtikelSchreiber.com Guest Post Calculator";
                display: block;
                margin-top: 2rem;
                padding-top: 1rem;
                border-top: 1px solid #ccc;
                font-size: 10pt;
                color: #666;
            }
        }
        
        /* Responsive Design */
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2rem;
            }
            
            .nav-links {
                flex-direction: column;
                gap: 1rem;
                width: 100%;
                margin-top: 1rem;
            }
            
            .tier-grid,
            .runtime-grid {
                grid-template-columns: 1fr;
            }
            
            .price-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            
            .share-widget {
                bottom: 10px;
                right: 10px;
            }
            
            .tax-section {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .export-actions {
                flex-direction: column;
                width: 100%;
            }
            
            .export-btn {
                width: 100%;
                text-align: center;
            }
            
            .modal-content {
                margin: 1rem;
                padding: 1rem;
                width: calc(100% - 2rem);
            }
        }
        
        /* Animations */
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .fade-in {
            animation: fadeIn 0.6s ease-out;
        }
        
        /* Focus Styles for Accessibility */
        *:focus {
            outline: 3px solid var(--accent-color);
            outline-offset: 2px;
        }
        
        /* High Contrast Mode Adjustments */
        @media (prefers-contrast: high) {
            .tier-card.selected,
            .runtime-option.selected {
                outline: 3px solid var(--text-primary);
            }
        }