certificate-template.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>A4 Certificate Template</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background: #f5f5f5;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            padding: 20px;
        }

        .canvas {
            width: 800px;
            height: 600px;
            background: white;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: relative;
            overflow: hidden;
        }

        .certificate-mockup {
            width: 100%;
            height: 100%;
            display: flex;
            flex-direction: column;
            padding: 60px 50px;
            position: relative;
            background: linear-gradient(135deg, #fafafa 0%, #ffffff 100%);
            border-left: 4px solid #2563eb;
        }

        /* Header Section */
        .cert-header {
            text-align: center;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 2px solid #e5e7eb;
        }

        .cert-title {
            font-size: 24px;
            font-weight: 700;
            color: #1f2937;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }

        .cert-subtitle {
            font-size: 12px;
            color: #9ca3af;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* Main Content Section */
        .cert-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 24px;
        }

        .cert-block {
            text-align: center;
        }

        .cert-label {
            font-size: 11px;
            color: #6b7280;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            margin-bottom: 6px;
            font-weight: 600;
        }

        .donor-name {
            font-size: 32px;
            font-weight: 700;
            color: #1f2937;
            word-wrap: break-word;
            overflow-wrap: break-word;
            max-width: 100%;
            line-height: 1.2;
        }

        .amount-block {
            margin: 8px 0;
        }

        .amount-value {
            font-size: 36px;
            font-weight: 800;
            color: #2563eb;
            letter-spacing: -0.5px;
        }

        .milestone-block {
            margin: 8px 0;
        }

        .milestone-text {
            font-size: 14px;
            color: #4b5563;
            font-weight: 500;
            line-height: 1.5;
            word-wrap: break-word;
            overflow-wrap: break-word;
            max-width: 100%;
        }

        /* Footer - Audit Logs Section */
        .cert-footer {
            border-top: 1px solid #e5e7eb;
            padding-top: 12px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px 16px;
            font-size: 9px;
            color: #9ca3af;
        }

        .audit-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .audit-label {
            font-weight: 600;
            color: #6b7280;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            font-size: 8px;
        }

        .audit-value {
            font-family: 'Courier New', monospace;
            font-size: 8px;
            color: #9ca3af;
            word-break: break-all;
            line-height: 1.3;
        }

        /* Responsive adjustments for very long text */
        @media (max-width: 600px) {
            .certificate-mockup {
                padding: 40px 30px;
            }

            .cert-title {
                font-size: 18px;
            }

            .donor-name {
                font-size: 24px;
            }

            .amount-value {
                font-size: 28px;
            }

            .cert-footer {
                gap: 8px 12px;
            }
        }
    </style>
</head>
<body>
    <div class="canvas">
        <div class="certificate-mockup">
            <!-- Header -->
            <div class="cert-header">
                <div class="cert-title">Certificate of Contribution</div>
                <div class="cert-subtitle">Stellar Network Donation Record</div>
            </div>

            <!-- Main Content -->
            <div class="cert-content">
                <!-- Donor Name -->
                <div class="cert-block">
                    <div class="cert-label">Donor</div>
                    <div class="donor-name">{donor_name}</div>
                </div>

                <!-- Amount -->
                <div class="cert-block amount-block">
                    <div class="cert-label">Contribution Amount</div>
                    <div class="amount-value">{amount} XLM</div>
                </div>

                <!-- Milestone -->
                <div class="cert-block milestone-block">
                    <div class="cert-label">Project Milestone</div>
                    <div class="milestone-text">{milestone}</div>
                </div>
            </div>

            <!-- Footer - Audit Logs -->
            <div class="cert-footer">
                <div class="audit-item">
                    <div class="audit-label">Date</div>
                    <div class="audit-value">{date}</div>
                </div>
                <div class="audit-item">
                    <div class="audit-label">TX ID</div>
                    <div class="audit-value">{tx_id}</div>
                </div>
                <div class="audit-item">
                    <div class="audit-label">Merkle Proof</div>
                    <div class="audit-value">{merkle_proof}</div>
                </div>
                <div class="audit-item">
                    <div class="audit-label">Consensus Hash</div>
                    <div class="audit-value">{onchain_hash}</div>
                </div>
            </div>
        </div>
    </div>
</body>
</html>