:root{color-scheme:light;--bg: #f4f6fb;--card: #ffffff;--text: #0f172a;--muted: #64748b;--accent: #0d9488;--accent-dark: #0f766e;--danger: #b91c1c;--border: #e2e8f0;font-family:DM Sans,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;min-height:100dvh;background:var(--bg);color:var(--text)}#app{max-width:720px;margin:0 auto;padding:1rem 1rem 2.5rem}.card{background:var(--card);border-radius:14px;padding:1.25rem 1.35rem;box-shadow:0 1px 3px #0f172a14;border:1px solid var(--border);margin-bottom:1rem}h1{font-size:1.35rem;font-weight:700;margin:0 0 .35rem}h2{font-size:1.05rem;font-weight:600;margin:0 0 .75rem}p.lead{margin:0 0 1rem;color:var(--muted);font-size:.95rem;line-height:1.45}label{display:block;font-size:.8rem;font-weight:600;color:var(--muted);margin-bottom:.35rem}input[type=text],input[type=email],input[type=password],select,textarea{width:100%;padding:.55rem .65rem;border-radius:8px;border:1px solid var(--border);font:inherit;margin-bottom:.85rem}textarea{min-height:5.5rem;resize:vertical}button{font:inherit;font-weight:600;border:none;border-radius:10px;padding:.65rem 1.1rem;cursor:pointer;background:var(--accent);color:#fff}button.secondary{background:#e2e8f0;color:var(--text)}button:disabled{opacity:.55;cursor:not-allowed}button.danger{background:var(--danger)}.row{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;margin-top:.5rem}.msg{padding:.65rem .75rem;border-radius:8px;font-size:.9rem;margin-bottom:.75rem}.msg.error{background:#fef2f2;color:var(--danger)}.msg.ok{background:#ecfdf5;color:#047857}.pdf-frame{width:100%;height:min(68vh,520px);border:1px solid var(--border);border-radius:10px;background:#fff}.pad-wrap{touch-action:none}canvas.sig{width:100%;height:180px;border-radius:10px;border:1px dashed var(--border);background:#fafafa;display:block;touch-action:none}.links-box{font-size:.85rem;word-break:break-all;background:#f8fafc;padding:.75rem;border-radius:8px;border:1px solid var(--border)}.links-box a{color:var(--accent-dark)}