:root {
  --rojo: #d62828;
  --rojo-osc: #a81d1d;
  --rojo-claro: #fde8e8;
  --tinta: #1f1b18;
  --gris: #6b635c;
  --borde: #e3dbd2;
  --fondo: #faf6f1;
  --tarjeta: #ffffff;
  --verde: #1e7a3c;
  --verde-claro: #e3f4e8;
  --ambar: #9a6200;
  --ambar-claro: #fff3d6;
  --radio: 12px;
  --sombra: 0 1px 2px rgba(0,0,0,.06), 0 2px 8px rgba(0,0,0,.04);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--fondo);
  color: var(--tinta);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding-bottom: env(safe-area-inset-bottom);
}
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6rem; }
h2 { font-size: 1.15rem; }
h3 { font-size: 1rem; }
.cargando { text-align: center; padding: 3rem 1rem; color: var(--gris); }
.muted { color: var(--gris); font-size: .9rem; }
.num { font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
.oculto { display: none !important; }

/* ---------- Encabezado y navegación ---------- */
header.top {
  position: sticky; top: 0; z-index: 10;
  background: var(--tarjeta);
  border-bottom: 1px solid var(--borde);
  display: flex; align-items: center; gap: .75rem;
  padding: .5rem 1rem;
}
header.top img { height: 34px; width: auto; display: block; }
header.top .quien { margin-left: auto; text-align: right; font-size: .85rem; color: var(--gris); }
header.top .quien b { color: var(--tinta); display: block; }
nav.menu {
  display: flex; gap: .25rem; overflow-x: auto;
  padding: .5rem 1rem; background: var(--tarjeta); border-bottom: 1px solid var(--borde);
}
nav.menu a {
  flex: none; text-decoration: none; color: var(--gris);
  padding: .45rem .8rem; border-radius: 999px; font-weight: 600; font-size: .9rem;
}
nav.menu a.activo { background: var(--rojo); color: #fff; }

main { max-width: 960px; margin: 0 auto; padding: 1rem; }

/* ---------- Pestañas internas ---------- */
.tabs { display: grid; grid-template-columns: repeat(auto-fit, minmax(0, 1fr)); gap: .25rem;
  background: #efe7de; border-radius: var(--radio); padding: .25rem; margin-bottom: 1rem; }
.tabs button {
  border: 0; background: transparent; padding: .6rem .25rem; border-radius: 9px;
  font: inherit; font-weight: 600; font-size: .9rem; color: var(--gris); cursor: pointer;
}
.tabs button.activo { background: var(--tarjeta); color: var(--rojo); box-shadow: var(--sombra); }
.tabs button .punto { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--verde); margin-left: 4px; vertical-align: middle; }

/* ---------- Tarjetas y formularios ---------- */
.card { background: var(--tarjeta); border: 1px solid var(--borde); border-radius: var(--radio);
  padding: 1rem; margin-bottom: 1rem; box-shadow: var(--sombra); }
.fecha-bar { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; margin-bottom: .75rem; }
.fecha-bar .dia { font-size: 1.25rem; font-weight: 700; }
.aviso { border-radius: var(--radio); padding: .7rem .9rem; margin-bottom: 1rem; font-weight: 500; }
.aviso.info { background: var(--ambar-claro); color: var(--ambar); }
.aviso.ok { background: var(--verde-claro); color: var(--verde); }
.aviso.error { background: var(--rojo-claro); color: var(--rojo-osc); }

label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: .25rem; }
.campo { margin-bottom: .8rem; }
input, select, textarea {
  width: 100%; font: inherit; font-size: 16px; color: var(--tinta);
  padding: .6rem .7rem; border: 1px solid #cfc5ba; border-radius: 10px; background: #fff;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--rojo); outline-offset: 0; border-color: var(--rojo); }
input[type=checkbox] { width: auto; }
.fila { display: grid; gap: .6rem; grid-template-columns: 1fr 1fr; }
.fila-3 { display: grid; gap: .6rem; grid-template-columns: 2fr 1fr auto; align-items: end; }
@media (max-width: 560px) {
  .fila { grid-template-columns: 1fr; }
  .fila-3 { grid-template-columns: 1fr 1fr; }
  .fila-3 > :first-child { grid-column: 1 / -1; }
}
.con-unidad { position: relative; }
.con-unidad span { position: absolute; right: .7rem; top: 50%; transform: translateY(-50%); color: var(--gris); font-size: .85rem; pointer-events: none; }
.con-unidad input { padding-right: 3.2rem; }

button.btn {
  font: inherit; font-weight: 700; border: 0; border-radius: 10px; cursor: pointer;
  padding: .7rem 1.1rem; background: var(--rojo); color: #fff;
}
button.btn:hover { background: var(--rojo-osc); }
button.btn:disabled { opacity: .55; cursor: default; }
button.btn.sec { background: #efe7de; color: var(--tinta); }
button.btn.sec:hover { background: #e4d9cc; }
button.btn.chico { padding: .4rem .7rem; font-size: .85rem; }
button.btn.ancho { width: 100%; }
button.x { border: 0; background: transparent; color: var(--gris); font-size: 1.3rem; cursor: pointer; padding: 0 .4rem; line-height: 1; }
button.x:hover { color: var(--rojo); }
.acciones { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
.sticky-abajo { position: sticky; bottom: 0; background: linear-gradient(transparent, var(--fondo) 30%); padding: 1rem 0 .5rem; }

/* ---------- Totales ---------- */
.total { display: flex; justify-content: space-between; align-items: baseline;
  border-top: 1px dashed var(--borde); padding-top: .7rem; margin-top: .4rem; font-weight: 700; font-size: 1.1rem; }
.kpis { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: .75rem; margin-bottom: 1rem; }
.kpi { background: var(--tarjeta); border: 1px solid var(--borde); border-radius: var(--radio); padding: .8rem 1rem; box-shadow: var(--sombra); }
.kpi .t { font-size: .8rem; color: var(--gris); font-weight: 600; text-transform: uppercase; letter-spacing: .02em; }
.kpi .v { font-size: 1.4rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.kpi .d { font-size: .82rem; color: var(--gris); }
.kpi.bueno .v { color: var(--verde); }
.kpi.malo .v { color: var(--rojo); }

/* ---------- Listas y tablas ---------- */
ul.lista { list-style: none; padding: 0; margin: 0; }
ul.lista li { display: flex; align-items: center; gap: .6rem; padding: .55rem 0; border-bottom: 1px solid var(--borde); }
ul.lista li:last-child { border-bottom: 0; }
ul.lista .cod { font-weight: 700; color: var(--rojo); min-width: 2.6rem; font-variant-numeric: tabular-nums; }
ul.lista .nom { flex: 1; min-width: 0; }
ul.lista .nom small { display: block; color: var(--gris); }

.tabla-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { padding: .45rem .5rem; border-bottom: 1px solid var(--borde); text-align: left; vertical-align: middle; }
th { font-size: .78rem; color: var(--gris); text-transform: uppercase; letter-spacing: .02em; background: #f6f0e9; position: sticky; top: 0; }
tr.cat td { background: #f6f0e9; font-weight: 700; color: var(--rojo-osc); }
tr.tot td { font-weight: 800; border-top: 2px solid var(--tinta); }
td.neg, span.neg { color: var(--rojo); font-weight: 700; }
td input { padding: .4rem .5rem; min-width: 90px; }

.stock-row { display: grid; grid-template-columns: 3rem 1fr 7.5rem; gap: .5rem; align-items: center; padding: .35rem 0; border-bottom: 1px solid var(--borde); }
.stock-row .cod { font-weight: 700; color: var(--rojo); font-variant-numeric: tabular-nums; }
.stock-row input { padding: .5rem 2.3rem .5rem .6rem; text-align: right; }
.stock-row .con-unidad span { right: .6rem; }
.stock-row.ok input { background: var(--verde-claro); border-color: #a9d8b8; }
.cat-titulo { margin: 1rem 0 .25rem; font-size: .8rem; color: var(--rojo-osc); text-transform: uppercase; letter-spacing: .04em; font-weight: 800; }

.badge { display: inline-block; font-size: .72rem; font-weight: 700; padding: .1rem .45rem; border-radius: 999px; background: #efe7de; color: var(--gris); }
.badge.rojo { background: var(--rojo-claro); color: var(--rojo-osc); }

/* ---------- Login ---------- */
.login { max-width: 380px; margin: 8vh auto 2rem; padding: 1rem; }
.login img { width: 100%; max-width: 300px; display: block; margin: 0 auto 1.5rem; }

/* ---------- Modal y toast ---------- */
.modal-fondo { position: fixed; inset: 0; background: rgba(0,0,0,.4); display: flex; align-items: center; justify-content: center; padding: 1rem; z-index: 50; }
.modal { background: var(--tarjeta); border-radius: var(--radio); padding: 1rem; width: 100%; max-width: 520px; max-height: 85vh; overflow: auto; }
#toast { position: fixed; left: 50%; bottom: 5.5rem; transform: translateX(-50%) translateY(150%);
  background: var(--tinta); color: #fff; padding: .7rem 1.1rem; border-radius: 999px; font-weight: 600;
  transition: transform .25s, opacity .25s; opacity: 0; pointer-events: none; z-index: 60; max-width: calc(100% - 2rem); text-align: center; }
#toast.ver { transform: translateX(-50%) translateY(0); opacity: 1; }
#toast.error { background: var(--rojo); }