:root{--bg: #0f172a;--panel: #ffffff;--border: #d8dee9;--text: #1c2534;--muted: #64748b;--primary: #2563eb;--danger: #dc2626;--ok: #059669;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:#eef2f7;color:var(--text)}.contenedor{max-width:900px;margin:0 auto;padding:24px 16px 64px}.tarjeta{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:24px;box-shadow:0 1px 3px #0f172a12}.barra{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}h1{font-size:22px;margin:0}h2{font-size:17px;margin:0 0 14px}label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}input{width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:8px;font-size:14px;background:#fff;color:var(--text)}input:focus{outline:2px solid rgba(37,99,235,.35);border-color:var(--primary)}.rejilla{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin-bottom:18px}.acciones{display:flex;flex-wrap:wrap;gap:10px}button{padding:9px 16px;border-radius:8px;border:1px solid transparent;font-size:14px;font-weight:500;cursor:pointer}button:disabled{opacity:.55;cursor:not-allowed}.btn-primario{background:var(--primary);color:#fff}.btn-neutro{background:#f1f5f9;color:var(--text);border-color:var(--border)}.btn-peligro{background:var(--danger);color:#fff}.btn-mini{padding:5px 10px;font-size:13px}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--border)}th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}tr.activa{background:#eff6ff}.aviso{padding:10px 12px;border-radius:8px;font-size:14px;margin-bottom:14px}.aviso-error{background:#fef2f2;color:var(--danger);border:1px solid #fecaca}.aviso-ok{background:#ecfdf5;color:var(--ok);border:1px solid #a7f3d0}.vacio{color:var(--muted);font-size:14px;padding:18px 0}.login-caja{max-width:380px;margin:12vh auto 0}.pista{font-size:13px;color:var(--muted);margin-top:14px}