:root {
  --verde: #1f4e3d;
  --verde-claro: #2e7d5b;
  --fondo: #f4f6f3;
  --tarjeta: #ffffff;
  --texto: #1d2420;
  --suave: #5f6b64;
  --borde: #dde3de;
  --rojo: #b3261e;
  --ambar: #8a5a00;
  --radio: 14px;
  --sombra: 0 1px 3px rgba(0, 0, 0, .08);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fondo: #121614;
    --tarjeta: #1c221f;
    --texto: #e7ece9;
    --suave: #a3b0a8;
    --borde: #2f3833;
    --verde-claro: #4caf84;
    --rojo: #f2b8b5;
    --ambar: #f0c36b;
    --sombra: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--fondo);
  color: var(--texto);
  font-size: 16px;
  line-height: 1.4;
  padding-bottom: calc(76px + env(safe-area-inset-bottom));
}

.barra {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; justify-content: space-between;
  background: var(--verde); color: #fff;
  padding: calc(10px + env(safe-area-inset-top)) 16px 10px;
}
.barra h1 { font-size: 18px; margin: 0; }
.barra .btn-texto { color: #fff; }
.modo-demo .barra h1::after { content: " · demo"; font-weight: 400; opacity: .7; font-size: 14px; }

main { max-width: 760px; margin: 0 auto; padding: 16px; }
h2 { font-size: 22px; margin: 4px 0 12px; }
h3 { font-size: 16px; margin: 20px 0 8px; }
.sub { color: var(--suave); margin: 0 0 14px; }
.vacio { color: var(--suave); text-align: center; padding: 24px 0; }
.rojo { color: var(--rojo); }
small { color: var(--suave); }

.tarjeta { background: var(--tarjeta); border-radius: var(--radio); padding: 20px 16px; box-shadow: var(--sombra); }
.centro { text-align: center; }

/* Botones */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 10px 18px; border-radius: 12px; border: 1px solid transparent;
  font: inherit; font-weight: 600; cursor: pointer; text-decoration: none;
}
.btn:disabled { opacity: .6; }
.btn-principal { background: var(--verde-claro); color: #fff; }
.btn-sec { background: var(--tarjeta); color: var(--texto); border-color: var(--borde); }
.btn-ok { background: #2e7d32; color: #fff; }
.btn-peligro { background: var(--tarjeta); color: var(--rojo); border-color: currentColor; }
.btn.grande { width: 100%; min-height: 72px; font-size: 18px; margin: 8px 0 12px; }
.btn.bloque { width: 100%; margin: 8px 0; }
.btn-texto { background: none; border: 0; color: var(--verde-claro); font: inherit; font-weight: 600; padding: 10px; cursor: pointer; }
.btn small { font-weight: 400; }

/* Login */
.login { text-align: center; padding-top: 32px; }
.login .logo { font-size: 64px; }
.login #login-boton { display: flex; flex-direction: column; align-items: center; gap: 4px; margin-top: 16px; }
.nota { color: var(--suave); font-size: 14px; }

/* Formulario */
.formulario { display: flex; flex-direction: column; gap: 14px; background: var(--tarjeta); padding: 16px; border-radius: var(--radio); box-shadow: var(--sombra); }
.formulario label { display: flex; flex-direction: column; gap: 6px; font-weight: 600; font-size: 14px; }
.formulario input, .formulario select, .formulario textarea, .selector select, .comp select {
  font: inherit; font-weight: 400; font-size: 16px; padding: 12px; border-radius: 10px;
  border: 1px solid var(--borde); background: var(--fondo); color: var(--texto); width: 100%;
}
.formulario .fila { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.formulario details { border: 1px solid var(--borde); border-radius: 10px; padding: 10px 12px; }
.formulario details[open] { display: flex; flex-direction: column; gap: 12px; }
.formulario summary { font-weight: 600; cursor: pointer; }
.categorias { border: 0; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.categorias legend { font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.formulario .opcion { flex-direction: row; }
.opcion input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.opcion span { display: inline-block; padding: 9px 14px; border-radius: 999px; border: 1px solid var(--borde); font-weight: 500; background: var(--fondo); }
.opcion input:checked + span { background: var(--verde-claro); border-color: var(--verde-claro); color: #fff; }
.opcion input:focus-visible + span { outline: 2px solid var(--verde-claro); outline-offset: 2px; }

.foto-previa { display: block; width: 100%; max-height: 260px; object-fit: contain; background: #000; border-radius: var(--radio); margin-bottom: 12px; }
.info { border-radius: 10px; padding: 10px 12px; margin-bottom: 10px; font-size: 14px; }
.info.ok { background: rgba(46, 125, 50, .12); color: var(--verde-claro); }
.info.alerta { background: rgba(240, 160, 0, .15); color: var(--ambar); }

/* Listas */
.mes { display: flex; justify-content: space-between; text-transform: capitalize; color: var(--suave); font-size: 14px; }
.mes span { color: var(--texto); }
.lista { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.item { display: flex; justify-content: space-between; gap: 10px; align-items: center; background: var(--tarjeta); border-radius: 12px; padding: 12px 14px; color: inherit; text-decoration: none; box-shadow: var(--sombra); }
.item > div:first-child { display: flex; flex-direction: column; min-width: 0; }
.item strong { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.der { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; flex-shrink: 0; }
.importe { font-weight: 700; font-variant-numeric: tabular-nums; }
.importe.grande { font-size: 28px; margin: 0 0 6px; }
.comp select { padding: 6px 8px; font-size: 14px; max-width: 150px; }

.chip { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 10px; border-radius: 999px; }
.chip-pendiente { background: rgba(240, 160, 0, .18); color: var(--ambar); }
.chip-aprobado { background: rgba(25, 118, 210, .15); color: #1565c0; }
.chip-rechazado { background: rgba(179, 38, 30, .13); color: var(--rojo); }
.chip-reintegrado { background: rgba(46, 125, 50, .15); color: var(--verde-claro); }
@media (prefers-color-scheme: dark) { .chip-aprobado { color: #90caf9; } }

.tabs { display: flex; gap: 6px; margin-bottom: 12px; overflow-x: auto; }
.tabs a { padding: 8px 14px; border-radius: 999px; background: var(--tarjeta); border: 1px solid var(--borde); color: var(--texto); text-decoration: none; white-space: nowrap; font-size: 14px; }
.tabs a.activo { background: var(--verde); color: #fff; border-color: var(--verde); }

/* Detalle */
.detalle-grid { display: grid; gap: 16px; }
@media (min-width: 700px) { .detalle-grid { grid-template-columns: 1fr 1fr; align-items: start; } }
.foto-caja { background: #000; border-radius: var(--radio); min-height: 200px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.foto-caja img { width: 100%; max-height: 45vh; object-fit: contain; cursor: zoom-in; }
.foto-caja.ampliada img { max-height: none; cursor: zoom-out; }
@media (min-width: 700px) { .foto-caja img { max-height: 75vh; } }
.datos { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; margin: 12px 0; }
.datos dt { color: var(--suave); font-size: 14px; }
.datos dd { margin: 0; word-break: break-word; }
.acciones { display: flex; flex-wrap: wrap; gap: 8px; }
.acciones .btn { flex: 1 1 140px; }
.volver { padding-left: 0; }

/* Resumen */
.selector { display: flex; flex-direction: column; gap: 6px; font-weight: 600; font-size: 14px; margin: 8px 0 14px; }
.kpis { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.kpi { background: var(--tarjeta); border-radius: 12px; padding: 12px; box-shadow: var(--sombra); display: flex; flex-direction: column; gap: 4px; }
.kpi span { color: var(--suave); font-size: 13px; }
.kpi strong { font-size: 18px; font-variant-numeric: tabular-nums; }
.tabla-scroll { overflow-x: auto; background: var(--tarjeta); border-radius: 12px; box-shadow: var(--sombra); }
.tabla { border-collapse: collapse; width: 100%; font-size: 14px; }
.tabla th, .tabla td { padding: 9px 10px; border-bottom: 1px solid var(--borde); text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.tabla th:first-child { text-align: left; position: sticky; left: 0; background: var(--tarjeta); }
.tabla thead th { color: var(--suave); font-weight: 600; }
.tabla tfoot th, .tabla tfoot td { font-weight: 700; border-bottom: 0; }

/* Navegación inferior */
.nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 5;
  display: flex; background: var(--tarjeta); border-top: 1px solid var(--borde);
  padding-bottom: env(safe-area-inset-bottom);
}
.nav a { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 8px 2px; font-size: 11px; color: var(--suave); text-decoration: none; }
.nav a span { font-size: 20px; }
.nav a.activo { color: var(--verde-claro); font-weight: 700; }
.nav a[hidden] { display: none; }

/* Estados */
.cargando { text-align: center; padding: 48px 0; color: var(--suave); }
.spinner { width: 36px; height: 36px; margin: 0 auto 12px; border: 4px solid var(--borde); border-top-color: var(--verde-claro); border-radius: 50%; animation: girar 0.8s linear infinite; }
@keyframes girar { to { transform: rotate(360deg); } }

.aviso {
  position: fixed; left: 16px; right: 16px; bottom: calc(84px + env(safe-area-inset-bottom)); z-index: 10;
  max-width: 560px; margin: 0 auto; padding: 12px 16px; border-radius: 12px;
  background: #263238; color: #fff; box-shadow: 0 4px 16px rgba(0, 0, 0, .25);
}
.aviso.ok { background: #2e7d32; }
.aviso.error { background: #b3261e; }