:root{color-scheme:light dark;--fg:#1a1a1a;--bg:#fff;--muted:#6b7280;--border:#d1d5db;--accent:#1d4ed8;--danger:#b91c1c;--success:#15803d}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--fg);background:var(--bg)}.attach-scan-page,.auth-page,.certificates-page,.home-page,.new-certificate-form,.new-certificate-result,.verify-page{max-width:640px;margin:3rem auto;padding:0 1.5rem}.certificates-page,.certificates-page table{max-width:960px}table{width:100%;border-collapse:collapse;margin-top:1rem}td,th{text-align:left;padding:.5rem;border-bottom:1px solid var(--border)}.status-filters a{margin-right:.75rem}form label{display:block;margin-bottom:1rem;font-weight:600}form input{display:block;width:100%;margin-top:.25rem;padding:.5rem;border:1px solid var(--border);border-radius:4px;font-weight:400}button{padding:.5rem 1rem;border:none;border-radius:4px;background:var(--accent);color:#fff;cursor:pointer}button:disabled{opacity:.6;cursor:not-allowed}.error-text{color:var(--danger)}.verify-card{border:1px solid var(--border);border-radius:8px;padding:1.5rem}.verify-valid{border-color:var(--success)}.verify-revoked,.verify-unknown{border-color:var(--danger)}.cert-pdf-embed{width:100%;height:480px;margin-top:1rem;border:1px solid var(--border)}.admin-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.5rem;border-bottom:1px solid var(--border)}.admin-header nav a{margin-right:1rem}.admin-user{color:var(--muted)}