:root{
  --primary:#1d4ed8; --primary-ink:#fff;
  --bg:#f4f6fa; --card:#fff; --ink:#0f172a; --muted:#64748b; --line:#e2e8f0;
  --ok:#15803d; --ok-bg:#dcfce7; --warn:#b45309; --warn-bg:#fef3c7; --bad:#b91c1c; --bad-bg:#fee2e2;
  --radius:14px; --shadow:0 1px 2px rgba(15,23,42,.06),0 4px 16px rgba(15,23,42,.06);
}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,sans-serif;background:var(--bg);color:var(--ink);font-size:16px;line-height:1.45;-webkit-font-smoothing:antialiased}
a{color:var(--primary)}
h1,h2,h3{line-height:1.2;margin:0 0 .6rem}
h1{font-size:1.5rem} h2{font-size:1.2rem} h3{font-size:1.05rem}
.muted{color:var(--muted)} .small{font-size:.85rem} .mono{font-family:ui-monospace,Consolas,monospace}
.wrap{max-width:1100px;margin:0 auto;padding:16px}
.narrow{max-width:460px}

/* Barra superior */
.top{background:#0f172a;color:#fff}
.top .wrap{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding-top:10px;padding-bottom:10px}
.brand{font-weight:700;letter-spacing:.2px;display:flex;align-items:center;gap:8px}
.brand .dot{width:12px;height:12px;border-radius:4px;background:var(--primary)}
.nav{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}
.nav a{color:#cbd5e1;text-decoration:none;padding:6px 10px;border-radius:8px;font-size:.92rem}
.nav a:hover,.nav a.on{background:rgba(255,255,255,.1);color:#fff}

/* Tarjetas y grillas */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:16px}
.grid{display:grid;gap:16px}
@media(min-width:800px){.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.spacer{flex:1}

/* Formularios */
label{display:block;font-weight:600;font-size:.9rem;margin:10px 0 4px}
input,select,textarea{width:100%;padding:11px 12px;border:1px solid #cbd5e1;border-radius:10px;font:inherit;background:#fff;color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--primary);outline-offset:1px;border-color:transparent}
input[type=checkbox]{width:auto}
.check{display:flex;gap:8px;align-items:center;font-weight:500}
.hp{position:absolute;left:-9999px;opacity:0}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 16px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);font:inherit;font-weight:600;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:hover{filter:brightness(.97)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.primary{background:var(--primary);color:var(--primary-ink);border-color:transparent}
.btn.ok{background:var(--ok);color:#fff;border-color:transparent}
.btn.bad{background:#fff;color:var(--bad);border-color:#fecaca}
.btn.sm{padding:6px 10px;font-size:.85rem;border-radius:8px}
.btn.lg{padding:16px 20px;font-size:1.1rem}
.btn.block{width:100%}

/* Tablas */
.tabla{width:100%;border-collapse:collapse;font-size:.92rem}
.tabla th,.tabla td{padding:9px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.tabla th{font-size:.78rem;text-transform:uppercase;letter-spacing:.4px;color:var(--muted)}
.scroll{overflow-x:auto}

/* Etiquetas / avisos */
.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:.78rem;font-weight:600;background:#eef2ff;color:#3730a3}
.tag.ok{background:var(--ok-bg);color:var(--ok)} .tag.warn{background:var(--warn-bg);color:var(--warn)} .tag.bad{background:var(--bad-bg);color:var(--bad)} .tag.gray{background:#f1f5f9;color:var(--muted)}
.alert{padding:12px 14px;border-radius:10px;margin-bottom:14px;font-weight:500}
.alert.ok{background:var(--ok-bg);color:#14532d} .alert.warn{background:var(--warn-bg);color:#78350f} .alert.bad{background:var(--bad-bg);color:#7f1d1d}
.kpi{font-size:2rem;font-weight:800;line-height:1}
.kpi-l{color:var(--muted);font-size:.85rem;margin-top:4px}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}
.tabs a{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);text-decoration:none;color:var(--ink);font-size:.9rem;font-weight:600}
.tabs a.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.copy{display:flex;gap:6px}
.copy input{font-family:ui-monospace,Consolas,monospace;font-size:.82rem}
details summary{cursor:pointer;font-weight:600}