/* Base Styles */
        :root {
            --primary-color: #0670d4ff;
            --primary-dark: #064785ff;
            --secondary-color: #059669;
            --dark-color: #1e293b;
            --light-color: #f8fafc;
            --gray-color: #64748b;
            --border-color: #e2e8f0;
            --error-color: #dc2626;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Roboto', sans-serif;
            background-color: #f1f5f9;
            color: var(--dark-color);
            line-height: 1.6;
            min-height: 100vh;
            padding: 0;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        
        /* Header Styles */
      
        /* Main Content Layout */
        .app-container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        
        .form-section, .preview-section {
            background: white;
            border-radius: 10px;
            padding: 1.5rem;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
        }
        
        .preview-section {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        
        .section-title {
            font-family: 'Poppins', sans-serif;
            font-weight: 600;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        /* Form Styles */
        .form-group {
            margin-bottom: 1.25rem;
        }
        
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
            color: var(--dark-color);
            font-size: 0.95rem;
        }
        
        input, select, textarea {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 1rem;
            transition: all 0.2s;
            background-color: white;
        }
        
        input:focus, select:focus, textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }
        
        /* Transaction Type Selector */
        .transaction-type {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }
        
        .type-option {
            text-align: center;
            padding: 1.25rem;
            border: 2px solid var(--border-color);
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.2s;
        }
        
        .type-option.active {
            border-color: var(--primary-color);
            background-color: rgba(37, 99, 235, 0.05);
        }
        
        .type-option i {
            font-size: 1.75rem;
            margin-bottom: 0.75rem;
            color: var(--gray-color);
        }
        
        .type-option.active i {
            color: var(--primary-color);
        }
        
        .type-option h3 {
            font-size: 1.1rem;
            margin-bottom: 0.25rem;
            color: var(--dark-color);
        }
        
        .type-option.active h3 {
            color: var(--primary-color);
        }
        
        .type-option p {
            font-size: 0.85rem;
            color: var(--gray-color);
        }
        
        /* Transaction Details */
        .transaction-details {
            display: none;
            background: var(--light-color);
            padding: 1.25rem;
            border-radius: 8px;
            margin-top: 0.5rem;
            border: 1px solid var(--border-color);
        }
        
        .transaction-details.active {
            display: block;
        }
        
        /* Buttons */
        .btn {
            display: inline-block;
            padding: 0.875rem 1.75rem;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            color: white;
            border: none;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
            text-align: center;
            width: 100%;
        }
        
        .btn:hover {
            background: linear-gradient(135deg, var(--primary-dark), #1e40af);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        }
        
        .btn-print {
            background: linear-gradient(135deg, var(--secondary-color), #047857);
            margin-top: 1.5rem;
            align-self: center;
            width: auto;
            padding: 0.875rem 2rem;
        }
        
        .btn-print:hover {
            background: linear-gradient(135deg, #047857, #065f46);
        }
        
        /* Preview Section */
        .preview-container {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 1.25rem;
            background: var(--light-color);
            overflow-y: auto;
            flex-grow: 1;
            margin-bottom: 1rem;
        }
        
        .confirmation-letter {
            background: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }
        
        /* Letter Styling */
        .company-header-centered {
            text-align: center;
            margin-bottom: 1rem;
        }
        
        .company-name {
            font-weight: 700;
            font-size: 1.4rem;
            color: var(--primary-dark);
            margin-bottom: 0.25rem;
        }
        
        .bold-center {
            font-weight: 500;
            text-align: center;
            margin-bottom: 0.25rem;
            font-size: 0.95rem;
        }
        
        .letterhead {
            margin-bottom: 1.5rem;
        }
        
        .letter-date-bar {
            border-bottom: 2px solid var(--primary-dark);
            margin: 0 0 0.5rem 0;
        }
        
        .letter-date-centered {
            text-align: right;
            font-weight: 500;
            margin-bottom: 0.5rem;
            font-size: 0.95rem;
        }
        
        .party-info {
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }
        
        .letter-subject {
            font-weight: 500;
            margin: 1.25rem 0;
            font-size: 0.95rem;
        }
        
        .salutation {
            margin-bottom: 1rem;
        }
        
        .letter-body {
            line-height: 1.7;
            margin-bottom: 1.5rem;
            font-size: 0.95rem;
        }
        
        .transaction-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            background: var(--light-color);
            border-radius: 8px;
            overflow: hidden;
            font-size: 0.9rem;
        }
        
        .transaction-table th {
            background: var(--primary-dark);
            color: white;
            padding: 0.75rem;
            text-align: left;
        }
        
        .transaction-table td {
            padding: 0.75rem;
            border-bottom: 1px solid var(--border-color);
        }
        
        .transaction-table tr:last-child td {
            border-bottom: none;
        }
        
        .letter-footer {
            margin-top: 2rem;
            font-size: 0.9rem;
        }
        
        .signature-left {
            text-align: left;
            margin-top: 1.5rem;
            padding-top: 0.75rem;
            border-top: 1px solid var(--border-color);
        }
        
        
        /* Breadcrumb Navigation */
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
        }
        
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
        }
        
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        
        /* Print Styles */
        @media print {
            body * {
                visibility: hidden !important;
            }
            
            .print-area, .print-area * {
                visibility: visible !important;
            }
            
            .print-area {
                position: absolute;
                left: 0;
                top: 0;
                width: 100vw;
                margin: 0;
                padding: 0;
                background: white !important;
                color: #222 !important;
                min-height: 100vh;
                box-shadow: none !important;
            }
            
            .no-print, header, .footer, .form-section, .preview-section h2 {
                display: none !important;
            }
            
            #letterheadTitle {
                display: none !important;
            }
        }
        
        /* Responsive Styles */
        @media (max-width: 1024px) {
            .app-container {
                grid-template-columns: 1fr;
            }
            
            .preview-container {
                height: auto;
                min-height: 500px;
            }
        }
        
        @media (max-width: 640px) {
            .container {
                padding: 0;
            }
            
            header {
                border-radius: 0;
            }
            
            .app-container {
                padding: 0 1rem;
            }
            
            .form-section, .preview-section {
                padding: 1.25rem;
            }
            
            .transaction-type {
                grid-template-columns: 1fr;
            }
            
            .confirmation-letter {
                padding: 1.25rem;
            }
            
            .company-name {
                font-size: 1.2rem;
            }
        }
        
        /* Accessibility Improvements */
        a:focus, button:focus, input:focus, select:focus, textarea:focus {
            outline: 2px solid var(--primary-color);
            outline-offset: 2px;
        }
        
        /* Micro-interactions */
        .btn:active {
            transform: translateY(0);
        }
        
        .type-option:active {
            transform: scale(0.98);
        }
        
        /* Structured Data for SEO (JSON-LD) */
        .structured-data {
            display: none;
        }