:root{
  --bg:#f4f6f4; --panel:#ffffff; --ink:#16211b; --muted:#5f6f66;
  --line:#dfe6e0; --brand:#1f6b45; --brand-dark:#164e33; --brand-soft:#e8f2ec;
  --danger:#b42318; --danger-soft:#fdecea; --warn:#b25e09; --warn-soft:#fdf3e7;
  --ok:#1f6b45; --ok-soft:#e8f2ec; --radius:10px;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font:14px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
button{font:inherit;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
a{color:var(--brand)}

/* ---------- Login ---------- */
#login{min-height:100vh;display:grid;place-items:center;padding:24px}
.card-login{background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:32px;width:100%;max-width:380px;box-shadow:0 4px 24px rgba(0,0,0,.06)}
.logo{font-size:26px;font-weight:800;letter-spacing:-.5px;color:var(--brand)}
.logo span{color:var(--ink)}
.sub{color:var(--muted);margin:4px 0 24px}

/* ---------- Layout ---------- */
#app{display:none;min-height:100vh;grid-template-columns:230px 1fr}
#app.on{display:grid}
aside{background:var(--brand-dark);color:#dcebe2;padding:18px 12px;display:flex;
  flex-direction:column;gap:2px}
aside .logo{color:#fff;font-size:20px;padding:0 10px 4px}
aside .logo span{color:#9ecdb4}
aside .who{padding:0 10px 16px;font-size:12px;color:#9ecdb4;
  border-bottom:1px solid rgba(255,255,255,.12);margin-bottom:12px}
.logout{margin-top:auto;background:rgba(255,255,255,.08);border:0;color:#cfe3d8;
  padding:9px;border-radius:8px}
/* ---------- Menú en acordeón ---------- */
nav{display:flex;flex-direction:column;gap:2px;overflow-y:auto}
.grupo{border-radius:8px;overflow:hidden}
.grupo .cab{display:flex;align-items:center;gap:9px;width:100%;
  background:none;border:0;color:#cfe3d8;padding:9px 10px;border-radius:8px;
  font-size:13px;font-weight:600;letter-spacing:.02em;text-align:left}
.grupo .cab:hover{background:rgba(255,255,255,.08);color:#fff}
.grupo.abierto .cab{color:#fff}
.grupo .cab .ic{width:16px;text-align:center;opacity:.75;font-size:12px}
.grupo .cab .tx{flex:1}
.grupo .cab .fl{opacity:.6;font-size:10px}
.grupo .items{display:none;padding:2px 0 6px}
.grupo.abierto .items{display:block}
.grupo .op{display:block;width:100%;text-align:left;background:none;border:0;
  color:#b9d4c5;padding:8px 10px 8px 35px;border-radius:8px;font-size:13.5px}
.grupo .op:hover{background:rgba(255,255,255,.08);color:#fff}
.grupo .op.active{background:var(--brand);color:#fff;font-weight:600}
main{padding:26px 30px;overflow:auto}
h1{font-size:21px;margin:0 0 3px}
.page-sub{color:var(--muted);margin:0 0 20px}

/* ---------- Componentes ---------- */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;margin-bottom:16px}
.grid{display:grid;gap:12px}
.cards{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
.kpi{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.kpi .lbl{font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.kpi .val{font-size:25px;font-weight:700;margin-top:5px;font-variant-numeric:tabular-nums}
.kpi .foot{font-size:12px;color:var(--muted);margin-top:2px}
.kpi.alerta{border-color:#f0c9a8;background:var(--warn-soft)}
.kpi.alerta .val{color:var(--warn)}
.kpi.grave{border-color:#f1bdb8;background:var(--danger-soft)}
.kpi.grave .val{color:var(--danger)}

.tabla-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th{text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.05em;
  color:var(--muted);border-bottom:1px solid var(--line);padding:9px 10px;white-space:nowrap}
td{padding:9px 10px;border-bottom:1px solid #eef2ef;vertical-align:middle}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:#fafcfa}
.num{text-align:right;font-variant-numeric:tabular-nums}
.vacio{padding:34px;text-align:center;color:var(--muted)}

.btn{background:var(--brand);color:#fff;border:0;padding:9px 15px;border-radius:8px;font-weight:600}
.btn:hover{background:var(--brand-dark)}
.btn.sec{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn.sec:hover{background:#f6f8f6}
.btn.peligro{background:var(--danger)}
.btn.mini{padding:5px 10px;font-size:12.5px;font-weight:500}
.btn:disabled{opacity:.5;cursor:not-allowed}
.fila{display:flex;gap:9px;align-items:center;flex-wrap:wrap}
.entre{display:flex;justify-content:space-between;align-items:center;
  gap:12px;flex-wrap:wrap;margin-bottom:14px}

label{display:block;font-size:12.5px;font-weight:600;margin:0 0 4px;color:#33443b}
.campo{margin-bottom:13px}
input,select,textarea{width:100%;padding:9px 11px;border:1px solid var(--line);
  border-radius:8px;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand-soft);border-color:var(--brand)}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.f3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
.busca{max-width:300px}

.tag{display:inline-block;padding:2px 9px;border-radius:999px;font-size:11.5px;font-weight:600}
.tag.ok{background:var(--ok-soft);color:var(--ok)}
.tag.warn{background:var(--warn-soft);color:var(--warn)}
.tag.bad{background:var(--danger-soft);color:var(--danger)}
.tag.gris{background:#eef1ef;color:var(--muted)}

dialog{border:0;border-radius:14px;padding:0;max-width:760px;width:94%;
  box-shadow:0 12px 48px rgba(0,0,0,.2)}
dialog::backdrop{background:rgba(10,20,15,.45)}
.modal-h{padding:18px 22px;border-bottom:1px solid var(--line);font-weight:700;font-size:16px}
.modal-b{padding:22px;max-height:66vh;overflow:auto}
.modal-f{padding:14px 22px;border-top:1px solid var(--line);display:flex;
  justify-content:flex-end;gap:9px;background:#fafbfa;border-radius:0 0 14px 14px}

#toast{position:fixed;right:20px;bottom:20px;z-index:99;display:flex;
  flex-direction:column;gap:8px}
.toast{background:#16211b;color:#fff;padding:12px 16px;border-radius:9px;
  max-width:380px;box-shadow:0 6px 20px rgba(0,0,0,.25);font-size:13.5px}
.toast.err{background:var(--danger)}
.toast.ok{background:var(--brand)}

.aviso{background:var(--warn-soft);border:1px solid #f0c9a8;color:#7a4406;
  padding:11px 14px;border-radius:9px;margin-bottom:14px;font-size:13px}
.hint{font-size:12px;color:var(--muted);margin-top:4px}

/* ---------- Impresión de la nota de venta ---------- */
#impresion{display:none}
@media print{
  aside, #toast, dialog, .entre .fila, #login{display:none !important}
  main{padding:0}
  body > #app{display:none !important}
  #impresion{display:block;margin:0 auto;color:#000;background:#fff}
  #impresion .nota{font:12px/1.45 "Courier New",monospace;padding:6mm 4mm}
  #impresion h2{margin:0 0 4px;font-size:19px;text-align:center;letter-spacing:2px}
  #impresion .chico{font-size:11px;margin:5px 0}
  #impresion hr{border:0;border-top:1px dashed #000;margin:7px 0}
  #impresion table{width:100%;border-collapse:collapse}
  #impresion td{padding:1px 0;border:0;font-size:11px;vertical-align:top}
  @page{margin:4mm}
}

/* La barra superior y el velo solo existen en pantallas angostas */
#barra{display:none}
#velo{display:none}

@media(max-width:820px){
  #app.on{grid-template-columns:1fr}
  main{padding:16px}
  .f2,.f3{grid-template-columns:1fr}

  /* El menú pasa a ser un cajón que se desliza sobre el contenido,
     en vez de empujarlo hacia abajo y comerse media pantalla. */
  aside{position:fixed;top:0;left:0;bottom:0;width:252px;z-index:40;
    transform:translateX(-100%);transition:transform .22s ease;overflow-y:auto}
  body.menu-abierto aside{transform:none;box-shadow:4px 0 24px rgba(0,0,0,.35)}

  #velo{display:block;position:fixed;inset:0;z-index:30;
    background:rgba(8,20,14,.5);opacity:0;pointer-events:none;transition:opacity .22s}
  body.menu-abierto #velo{opacity:1;pointer-events:auto}

  #barra{display:flex;align-items:center;gap:12px;position:sticky;top:0;z-index:20;
    background:var(--brand-dark);color:#fff;padding:11px 14px;margin:-16px -16px 16px}
  #barra button{background:rgba(255,255,255,.14);border:0;color:#fff;
    font-size:17px;line-height:1;padding:7px 12px;border-radius:8px}
  #barra span{font-weight:600;font-size:15px}
}