:root {
  --fondo: #f3f5f8; --tarjeta: #fff; --texto: #1b2430; --suave: #5d6b7c; --borde: #dde3ea;
  --primario: #0b5cab; --primario-t: #fff; --ok: #157347; --mal: #b42318; --aviso: #8a5a00;
  --sombra: 0 1px 2px rgba(16,24,40,.06), 0 1px 3px rgba(16,24,40,.08);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --fondo: #0f141a; --tarjeta: #18202a; --texto: #e6ebf1; --suave: #98a6b6; --borde: #2a3542;
    --primario: #4f9cf0; --primario-t: #07121f; --ok: #4cc38a; --mal: #ff7b72; --aviso: #e3b341; --sombra: none; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--fondo); color: var(--texto); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
[hidden] { display: none !important; }
h1 { font-size: 1.35rem; margin: 0; }
h2 { font-size: 1.1rem; margin: 1.5rem 0 .6rem; }
.tarjeta { background: var(--tarjeta); border: 1px solid var(--borde); border-radius: 12px; padding: 14px; box-shadow: var(--sombra); }
label { display: flex; flex-direction: column; gap: 4px; font-size: .82rem; color: var(--suave); font-weight: 600; }
input, select, textarea { font: inherit; font-size: 16px; color: var(--texto); background: var(--fondo); border: 1px solid var(--borde);
  border-radius: 8px; padding: 9px 10px; width: 100%; min-width: 0; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primario); outline-offset: -1px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; font: inherit; font-weight: 600; cursor: pointer;
  border: 1px solid var(--borde); background: var(--tarjeta); color: var(--texto); border-radius: 8px; padding: 9px 14px; text-decoration: none; white-space: nowrap; }
.btn:hover { border-color: var(--primario); }
.btn.primario { background: var(--primario); color: var(--primario-t); border-color: var(--primario); }
.btn.chico { padding: 5px 10px; font-size: .85rem; }
.btn.peligro { color: var(--mal); }
.btn[disabled] { opacity: .6; cursor: wait; }
.error { color: var(--mal); margin: 0; min-height: 0; font-size: .9rem; }
.error:empty { display: none; }

.marca { display: flex; align-items: center; gap: 10px; }
.marca small { display: block; color: var(--suave); font-size: .75rem; }
.logo { width: 34px; height: 34px; border-radius: 9px; background: var(--primario); color: var(--primario-t); display: grid; place-items: center; font-weight: 800; font-size: 1.2rem; }

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-caja { width: min(360px, 100%); display: flex; flex-direction: column; gap: 14px; padding: 22px; }

.barra { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 10px 16px; background: var(--tarjeta); border-bottom: 1px solid var(--borde); }
.quien { display: flex; align-items: center; gap: 8px; font-size: .9rem; flex-wrap: wrap; justify-content: flex-end; }
.etiqueta { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .03em; padding: 2px 7px; border-radius: 99px; background: var(--fondo); border: 1px solid var(--borde); color: var(--suave); }
.pestanas { display: flex; gap: 4px; padding: 8px 16px 0; overflow-x: auto; background: var(--tarjeta); border-bottom: 1px solid var(--borde); position: sticky; top: 0; z-index: 5; }
.pestanas button { font: inherit; font-weight: 600; background: none; border: 0; border-bottom: 3px solid transparent; padding: 8px 12px 10px; color: var(--suave); cursor: pointer; white-space: nowrap; }
.pestanas button.activa { color: var(--primario); border-bottom-color: var(--primario); }

.vista { max-width: 1000px; margin: 0 auto; padding: 16px; display: flex; flex-direction: column; gap: 14px; }
.cabecera { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.filtros { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.periodo { grid-column: 1 / -1; display: flex; gap: 6px; flex-wrap: wrap; }
.periodo button { font: inherit; font-size: .85rem; padding: 4px 10px; border-radius: 99px; border: 1px solid var(--borde); background: var(--fondo); color: var(--texto); cursor: pointer; }
.periodo button.activa { background: var(--primario); color: var(--primario-t); border-color: var(--primario); }
.grilla { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.grilla .ancho { grid-column: 1 / -1; }
#form-cobro, #form-usuario { grid-template-columns: repeat(4, minmax(0, 1fr)); }
#form-cobro .ancho, #form-usuario .ancho { grid-column: span 2; }
#form-cobro .btn.ancho, #form-usuario .btn.ancho, #form-cobro .error, #form-usuario .error { grid-column: 1 / -1; }

.totales { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; flex-wrap: wrap; }
.totales span { display: block; color: var(--suave); font-size: .85rem; }
.totales strong { font-size: 1.6rem; font-variant-numeric: tabular-nums; }
.totales small { color: var(--suave); margin-left: 6px; }
.descargas { display: flex; gap: 8px; flex-wrap: wrap; }

.lista { display: flex; flex-direction: column; gap: 8px; }
.item { display: grid; grid-template-columns: 56px 1fr auto; gap: 12px; align-items: center; background: var(--tarjeta); border: 1px solid var(--borde); border-radius: 10px; padding: 10px 12px; }
.item.sin-mini { grid-template-columns: 1fr auto; }
.mini { width: 56px; height: 56px; border-radius: 8px; object-fit: cover; background: var(--fondo); border: 1px solid var(--borde); cursor: zoom-in; display: grid; place-items: center; font-size: .72rem; color: var(--suave); font-weight: 700; padding: 0; }
.mini.vacia { cursor: default; font-weight: 500; text-align: center; line-height: 1.1; }
.item .titulo { font-weight: 600; }
.item .meta { color: var(--suave); font-size: .85rem; overflow-wrap: anywhere; }
.item .lado { text-align: right; display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.monto { font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; font-size: 1.05rem; }
.monto.mas { color: var(--ok); }
.botones { display: flex; gap: 4px; }
.vacio { text-align: center; color: var(--suave); padding: 30px 10px; }
.pill { font-size: .72rem; padding: 1px 7px; border-radius: 99px; border: 1px solid var(--borde); color: var(--suave); white-space: nowrap; }
.pill.caja { color: var(--aviso); border-color: currentColor; }

.kpis { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.kpi span { display: block; color: var(--suave); font-size: .85rem; }
.kpi strong { font-size: 1.45rem; font-variant-numeric: tabular-nums; }
.kpi small { display: block; color: var(--suave); font-size: .78rem; margin-top: 2px; }
.kpi.destacado { border-color: var(--primario); }
.tabla-cont { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--borde); white-space: nowrap; }
th { color: var(--suave); font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; }
td.n, th.n { text-align: right; font-variant-numeric: tabular-nums; }
.barra-cat { height: 6px; background: var(--primario); border-radius: 3px; min-width: 2px; }
.historial { font-size: .85rem; max-height: 340px; overflow: auto; padding: 6px 14px; }
.historial div { padding: 5px 0; border-bottom: 1px solid var(--borde); }
.historial span { color: var(--suave); }

dialog { border: 1px solid var(--borde); border-radius: 14px; padding: 18px; width: min(560px, calc(100vw - 24px)); background: var(--tarjeta); color: var(--texto); max-height: calc(100vh - 24px); }
dialog::backdrop { background: rgba(10, 15, 25, .55); }
dialog h2 { margin: 0; }
.acciones { display: flex; justify-content: flex-end; gap: 8px; }
.foto-zona { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding: 10px; border: 1px dashed var(--borde); border-radius: 10px; }
.foto-zona img { width: 84px; height: 84px; object-fit: cover; border-radius: 8px; }
.pdf { width: 84px; height: 84px; display: grid; place-items: center; border-radius: 8px; background: var(--fondo); font-weight: 800; color: var(--mal); }
.visor { width: min(900px, calc(100vw - 16px)); padding: 10px; }
.visor-barra { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; }
.visor-barra span { flex: 1; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.visor img { display: block; max-width: 100%; max-height: calc(100vh - 110px); margin: 0 auto; border-radius: 8px; }

.aviso { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); background: var(--texto); color: var(--fondo); padding: 10px 16px; border-radius: 10px; font-weight: 600; z-index: 50; max-width: calc(100vw - 32px); }

@media (max-width: 720px) {
  .filtros { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  #form-cobro, #form-usuario { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kpis { grid-template-columns: 1fr; }
  .marca small { display: none; }
  .totales strong { font-size: 1.35rem; }
  .descargas, .descargas .btn { width: 100%; }
}
@media (max-width: 420px) {
  .item { grid-template-columns: 48px 1fr; }
  .item .mini { width: 48px; height: 48px; }
  .item .lado { grid-column: 1 / -1; flex-direction: row; justify-content: space-between; align-items: center; }
  .item.sin-mini .lado { grid-column: auto; flex-direction: column; }
  #quien-nombre { display: none; }
}