:root{--primary:#2563eb;--primary-dark:#1d4ed8;--bg:#f4f6fb;--card-bg:#fff;--border:#e2e6ee;--text:#1a2233;--text-muted:#6b7280;--danger:#dc2626;--success:#16a34a;--warn:#d97706;--radius:10px}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.page-center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);padding:32px;width:100%;max-width:420px;box-shadow:0 8px 24px rgba(20,30,60,.06)}.card-wide{max-width:720px}h1,h2,h3{margin:0 0 8px}.subtitle{color:var(--text-muted);margin-bottom:24px;font-size:14px}.field{margin-bottom:16px}.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--text)}.field input,.field select,.field textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:14px;background:#fff;color:var(--text)}.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(37,99,235,.12)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 18px;border-radius:8px;border:none;font-size:14px;font-weight:600;cursor:pointer;background:var(--primary);color:#fff;transition:background .15s ease}.btn:hover{background:var(--primary-dark)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-secondary{background:#eef1f7;color:var(--text)}.btn-secondary:hover{background:#e2e6ee}.btn-danger{background:var(--danger)}.btn-danger:hover{background:#b91c1c}.btn-block{width:100%}.error-box{background:#fef2f2;border:1px solid #fecaca;color:#991b1b;border-radius:8px}.error-box,.success-box{padding:10px 14px;font-size:13px;margin-bottom:16px}.success-box{background:#f0fdf4;border:1px solid #bbf7d0;color:#166534;border-radius:8px}.admin-shell{display:flex;min-height:100vh}.admin-sidebar{width:230px;background:#111827;color:#e5e7eb;padding:24px 16px;flex-shrink:0}.admin-sidebar .brand{font-weight:700;font-size:16px;margin-bottom:28px;color:#fff}.admin-sidebar nav a{display:block;padding:10px 12px;border-radius:8px;color:#cbd5e1;font-size:14px;margin-bottom:4px}.admin-sidebar nav a.active,.admin-sidebar nav a:hover{background:#1f2937;color:#fff;text-decoration:none}.admin-main{flex:1 1;padding:32px 40px;max-width:1100px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.table td,.table th{padding:12px 14px;text-align:left;border-bottom:1px solid var(--border);font-size:14px}.table th{background:#f9fafb;font-weight:600;color:var(--text-muted);font-size:12px;text-transform:uppercase;letter-spacing:.03em}.table tr:last-child td{border-bottom:none}.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:600}.badge-published{background:#dcfce7;color:#166534}.badge-draft{background:#f3f4f6;color:#4b5563}.actions-row{display:flex;gap:8px}.pdf-picker{position:relative;border:1px solid var(--border);border-radius:8px;overflow:hidden;display:inline-block;cursor:crosshair;background:#fff}.qr-marker{position:absolute;border:2px solid var(--primary);background:rgba(37,99,235,.15);transform:translate(-50%,-50%);border-radius:4px;pointer-events:none}.verify-page{min-height:100vh;padding:40px 20px;display:flex;flex-direction:column;align-items:center}.verify-header{text-align:center;margin-bottom:24px}.verify-status{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;background:#f0fdf4;color:#166534;font-weight:600;font-size:14px;margin-bottom:20px}.verify-frame{width:100%;max-width:900px;height:80vh;border:1px solid var(--border);border-radius:var(--radius);background:#fff;overflow:hidden}.hint{font-size:12px;color:var(--text-muted);margin-top:4px}