:root{
  --verde:#2e7d5b; --verde-osc:#245c46; --gris:#f4f5f7; --linea:#e2e5ea;
  --texto:#1f2733; --muted:#8a94a6; --rojo:#c0392b;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--texto);background:var(--gris)}

/* Barra superior */
.top{display:flex;align-items:center;gap:18px;background:#fff;border-bottom:1px solid var(--linea);
  padding:12px 20px;position:sticky;top:0;z-index:5;flex-wrap:wrap}
.brand{font-weight:700;color:var(--verde);font-size:18px}
.top nav{display:flex;gap:6px;flex-wrap:wrap}
.top nav a{padding:8px 12px;border-radius:8px;text-decoration:none;color:var(--texto);font-size:14px}
.top nav a:hover{background:var(--gris)}
.top nav a.on{background:var(--verde);color:#fff}
.salir{margin-left:auto;color:var(--muted);text-decoration:none;font-size:13px}

/* Contenido */
.wrap{max-width:920px;margin:22px auto;padding:0 16px}
h1{font-size:22px;margin:0 0 14px}
h3{margin:22px 0 8px}
.muted{color:var(--muted)}
.der{text-align:right}
a{color:var(--verde-osc)}

/* Avisos */
.alert{background:#fdecea;color:var(--rojo);border:1px solid #f5c6c0;padding:10px 12px;border-radius:8px;margin:10px 0}
.ok{background:#e8f6ef;color:var(--verde-osc);border:1px solid #b7e2cd;padding:10px 12px;border-radius:8px;margin:10px 0}

/* Formularios */
label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}
label.inline{display:inline-block;margin-right:12px}
input,select{font:inherit;padding:9px 10px;border:1px solid var(--linea);border-radius:8px;background:#fff;width:100%;max-width:340px}
input[type=number]{width:auto}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px;max-width:700px}
.fila-form{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:12px 0;background:#fff;padding:12px;border-radius:10px;border:1px solid var(--linea)}
.fila-form input{max-width:240px}

/* Botones */
button,.btn-sec{font:inherit;cursor:pointer;border:none;border-radius:8px;padding:9px 16px}
button{background:var(--verde);color:#fff}
button:hover{background:var(--verde-osc)}
.btn-sec{background:#fff;border:1px solid var(--linea);color:var(--texto);text-decoration:none;display:inline-block}
.btn-x{background:transparent;color:var(--rojo);padding:4px 8px}
.acciones{display:flex;gap:10px;align-items:center;margin-top:18px}

/* Tablas */
.tabla{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--linea);border-radius:10px;overflow:hidden;margin:10px 0}
.tabla th,.tabla td{padding:10px 12px;border-bottom:1px solid var(--linea);text-align:left;font-size:14px}
.tabla th{background:#fafbfc;color:var(--muted);font-weight:600}
.tabla tfoot td{background:#fafbfc}
.tabla select,.tabla input{max-width:none}

.total-box{margin:14px 0;font-size:18px;font-weight:700;text-align:right}
.pie{max-width:920px;margin:30px auto;padding:16px;color:var(--muted);font-size:12px;text-align:center}

/* Login */
.login-body{display:flex;min-height:100vh;align-items:center;justify-content:center}
.login-card{background:#fff;padding:28px;border-radius:14px;border:1px solid var(--linea);width:320px;box-shadow:0 6px 24px rgba(0,0,0,.06)}
.login-card h1{color:var(--verde);text-align:center}
.login-card button{width:100%;margin-top:16px}

/* Orden de venta */
.orden{background:#fff;padding:22px;border-radius:12px;border:1px solid var(--linea)}
.orden-head{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:8px}

@media print{ .top,.pie,.no-print{display:none!important} body{background:#fff} .orden{border:none;padding:0} }
@media(max-width:600px){ .grid2{grid-template-columns:1fr} }