:root{--bg:#f6f7f9;--card:#fff;--text:#1f2937;--muted:#6b7280;--primary:#2563eb;--primary-dark:#1d4ed8;--danger:#dc2626;--success:#16a34a;--warning:#d97706;--border:#e5e7eb;--radius:.5rem}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1100px;margin:0 auto;padding:1.5rem}header{background:var(--card);border-bottom:1px solid var(--border);z-index:10;padding:1rem 0;position:sticky;top:0}header .container{justify-content:space-between;align-items:center;padding:0 1.5rem;display:flex}nav a{color:var(--muted);margin-left:1rem;font-weight:600}nav a.active,nav a:hover{color:var(--primary)}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:1.25rem;padding:1.25rem;box-shadow:0 1px 2px #0000000a}.grid-4{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;display:grid}.stat{color:var(--primary);font-size:1.75rem;font-weight:800}.stat-label{color:var(--muted);font-size:.875rem}table{border-collapse:collapse;width:100%;font-size:.9rem}th,td{text-align:left;border-bottom:1px solid var(--border);vertical-align:top;padding:.75rem .5rem}th{color:var(--muted);text-transform:uppercase;letter-spacing:.05em;font-size:.75rem;font-weight:700}tr:hover td{background:#f9fafb}form{flex-direction:column;gap:.75rem;display:flex}.form-row{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:.75rem;display:grid}label{flex-direction:column;gap:.25rem;font-size:.875rem;font-weight:600;display:flex}input,select,textarea{border:1px solid var(--border);border-radius:var(--radius);font:inherit;background:#fff;padding:.5rem .75rem}input:focus,select:focus,textarea:focus{outline:2px solid var(--primary);border-color:var(--primary)}textarea{min-height:80px}button,.button{border-radius:var(--radius);background:var(--primary);color:#fff;font:inherit;cursor:pointer;border:none;justify-content:center;align-items:center;padding:.5rem 1rem;font-weight:600;text-decoration:none;display:inline-flex}button:hover,.button:hover{background:var(--primary-dark);text-decoration:none}button.secondary{color:var(--text);background:#e5e7eb}button.secondary:hover{background:#d1d5db}button.danger{background:var(--danger);color:#fff}button.danger:hover{background:#b91c1c}.inline-form{display:inline}.inline-form button{padding:.35rem .6rem;font-size:.8rem}.badge{border-radius:9999px;padding:.15rem .5rem;font-size:.75rem;font-weight:700;display:inline-block}.badge-deuda{color:#991b1b;background:#fee2e2}.badge-ok{color:#166534;background:#dcfce7}.muted{color:var(--muted)}.result{color:#1e40af;border-radius:var(--radius);background:#eff6ff;border:1px solid #bfdbfe;margin-bottom:1rem;padding:1rem}.result.error{color:#991b1b;background:#fef2f2;border-color:#fecaca}