:root {
  --fondo: #f3f5f8;
  --tarjeta: #ffffff;
  --texto: #1b2433;
  --suave: #5b6576;
  --borde: #dde2ea;
  --primario: #14365c;
  --primario-2: #1f4f86;
  --acento: #e9f1fb;
  --ok: #1d7a46;
  --ok-fondo: #e7f6ed;
  --error: #b42318;
  --error-fondo: #fdecea;
  --info-fondo: #fff7e0;
  --info-borde: #f0d27a;
  --radio: 12px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh; display: flex; flex-direction: column;
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--fondo); color: var(--texto);
}
a { color: var(--primario-2); }
h1 { font-size: 1.45rem; line-height: 1.25; margin: 0 0 .35rem; }
.sub { color: var(--suave); margin: 0 0 1rem; }

/* Barra superior */
.barra { background: var(--primario); color: #fff; padding: .75rem 16px; }
.marca { display: flex; align-items: center; gap: .75rem; color: #fff; text-decoration: none; max-width: 960px; margin: 0 auto; }
.marca img { height: 40px; width: auto; background: #fff; border-radius: 8px; padding: 3px; }
.marca span { display: flex; flex-direction: column; line-height: 1.2; }
.marca strong { font-size: 1.02rem; letter-spacing: .01em; }
.marca small { opacity: .8; font-size: .82rem; }

.contenido { flex: 1; width: 100%; max-width: 960px; margin: 0 auto; padding: 20px 16px 32px; }
.inicio .contenido { max-width: 560px; }
.tarjeta { background: var(--tarjeta); border: 1px solid var(--borde); border-radius: var(--radio); padding: 22px 18px; box-shadow: 0 1px 2px rgba(16, 24, 40, .04); }
.tarjeta-consulta { margin-top: 4vh; }

.titulo-fila { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: .75rem; margin-bottom: .5rem; }
.titulo-fila h1 { word-break: break-word; }

/* Botones */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .4rem; border: 1px solid transparent; border-radius: 10px; padding: .7rem 1.1rem; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; white-space: nowrap; }
.btn-primario { background: var(--primario-2); color: #fff; }
.btn-primario:hover { background: var(--primario); }
.btn-sec { background: #fff; color: var(--primario); border-color: var(--borde); }
.btn-sec:hover { background: var(--acento); }
.btn-peligro { background: #fff; color: var(--error); border-color: #f1b8b2; }
.btn-chico { padding: .45rem .8rem; font-size: .9rem; }
.btn-bloque { width: 100%; margin-top: 1rem; }

/* Avisos */
.aviso { border-radius: 10px; padding: .8rem 1rem; margin: 0 0 1rem; border: 1px solid; }
.aviso-ok { background: var(--ok-fondo); border-color: #a6dcbc; color: #134e2d; }
.aviso-error { background: var(--error-fondo); border-color: #f4b9b2; color: #7a1a12; }
.aviso-info { background: var(--info-fondo); border-color: var(--info-borde); color: #5c4400; }
.aviso-info .btn { margin-top: .6rem; display: flex; width: fit-content; }

/* Formularios */
label { display: block; font-weight: 600; font-size: .92rem; }
input, select { display: block; width: 100%; margin-top: .3rem; padding: .7rem .8rem; font: inherit; font-weight: 400; color: var(--texto); background: #fff; border: 1px solid #c9d0db; border-radius: 10px; }
input:focus, select:focus { outline: 2px solid #9cc0ea; border-color: var(--primario-2); }
input:disabled { background: #f1f3f6; color: var(--suave); }
.form-consulta input { font-size: 1.2rem; letter-spacing: .03em; }
.form-consulta .btn { width: 100%; margin-top: .9rem; font-size: 1.05rem; }
.pasos { list-style: none; padding: 0; margin: 1.4rem 0 0; display: grid; gap: .55rem; color: var(--suave); font-size: .93rem; }
.pasos li { display: flex; align-items: center; gap: .6rem; }
.pasos span { flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--acento); color: var(--primario); display: grid; place-items: center; font-weight: 700; font-size: .85rem; }

fieldset { border: 0; padding: 0; margin: 0 0 1.25rem; }
legend { font-weight: 700; color: var(--primario); padding: 0; margin-bottom: .6rem; font-size: 1.02rem; }
.rejilla { display: grid; grid-template-columns: 1fr; gap: .9rem; }
.etq { display: block; font-weight: 600; font-size: .92rem; margin-bottom: .35rem; }
.opciones { display: flex; flex-wrap: wrap; gap: .5rem; }
.opcion { display: flex; align-items: center; gap: .45rem; font-weight: 400; border: 1px solid var(--borde); border-radius: 10px; padding: .5rem .75rem; background: #fff; }
.opcion input, .autoriza input { width: auto; margin: 0; flex: none; }
.autoriza { display: flex; gap: .6rem; align-items: flex-start; font-weight: 400; font-size: .92rem; background: var(--acento); border-radius: 10px; padding: .8rem; }
.autoriza input { margin-top: .25rem; width: 18px; height: 18px; }
small.error { display: block; color: var(--error); font-weight: 500; margin-top: .25rem; }

/* Lista de facturas */
.conteo { color: var(--suave); margin: .5rem 0; font-size: .92rem; }
.lista-facturas { list-style: none; margin: 0; padding: 0; border: 1px solid var(--borde); border-radius: 10px; overflow: hidden; }
.lista-facturas li { display: grid; grid-template-columns: 1fr auto; grid-template-areas: "info valor" "boton boton"; gap: .5rem .75rem; align-items: center; padding: .85rem 1rem; border-top: 1px solid var(--borde); }
.lista-facturas li:first-child { border-top: 0; }
.lista-facturas li:nth-child(even) { background: #fafbfd; }
.f-info { grid-area: info; display: flex; flex-direction: column; min-width: 0; }
.f-info span { color: var(--suave); font-size: .88rem; }
.f-valor { grid-area: valor; font-weight: 700; font-variant-numeric: tabular-nums; }
.lista-facturas .btn { grid-area: boton; }

/* Tablas del administrador */
.tabla-env { overflow-x: auto; border: 1px solid var(--borde); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
th, td { text-align: left; padding: .55rem .7rem; border-bottom: 1px solid var(--borde); vertical-align: top; }
th { background: #f6f8fb; font-weight: 600; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
.nav-admin { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1rem; }
.nav-admin a { text-decoration: none; padding: .45rem .8rem; border-radius: 999px; border: 1px solid var(--borde); background: #fff; color: var(--primario); font-weight: 600; font-size: .9rem; }
.nav-admin a.activo { background: var(--primario-2); border-color: var(--primario-2); color: #fff; }
.filtros { display: flex; flex-wrap: wrap; gap: .5rem; align-items: flex-end; margin-bottom: 1rem; }
.filtros input { width: auto; min-width: 0; flex: 1 1 200px; margin: 0; }
.kpis { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; margin-bottom: 1rem; }
.kpi { background: var(--acento); border-radius: 10px; padding: .8rem; }
.kpi b { display: block; font-size: 1.4rem; color: var(--primario); }
.kpi span { color: var(--suave); font-size: .85rem; }
.mini { color: var(--suave); font-size: .85rem; }
form.en-linea { display: inline; }

.pie { text-align: center; color: var(--suave); font-size: .85rem; padding: 18px 16px 26px; }
.pie p { margin: .15rem 0; }

@media (min-width: 640px) {
  .tarjeta { padding: 28px; }
  h1 { font-size: 1.6rem; }
  .rejilla { grid-template-columns: 1fr 1fr; }
  .rejilla .ancho { grid-column: 1 / -1; }
  .lista-facturas li { grid-template-columns: 1fr auto auto; grid-template-areas: "info valor boton"; }
  .kpis { grid-template-columns: repeat(4, 1fr); }
}