:root {
    --marca: #2c5cfc;
    --fondo: #f5f6fa;
    --tarjeta: #fff;
    --texto: #14161f;
    --suave: #6b7080;
    --borde: #e4e6ee;
    --verde: #12a150;
    --rojo: #e5484d;
    --radio: 16px;
}

* { box-sizing: border-box; }

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: 1.45;
}

a { color: var(--marca); text-decoration: none; }
h1 { font-size: 1.6rem; margin: .4rem 0 1rem; }
h2 { font-size: 1.1rem; margin: 0 0 .8rem; }
code { background: #eef0f6; padding: 1px 5px; border-radius: 4px; }

.barra {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    padding: 12px 16px; background: var(--tarjeta); border-bottom: 1px solid var(--borde);
    position: sticky; top: 0; z-index: 5;
}
.marca { font-weight: 800; color: var(--texto); }
.marca span { color: var(--marca); font-weight: 600; }
.barra nav { display: flex; align-items: center; gap: 14px; }

.contenido { max-width: 860px; margin: 0 auto; padding: 20px 16px 48px; }

.boton {
    display: inline-flex; align-items: center; justify-content: center;
    border: 0; border-radius: 12px; background: var(--marca); color: #fff;
    font: inherit; font-weight: 600; padding: 12px 20px; cursor: pointer;
}
.boton-chico { padding: 8px 14px; font-size: .95rem; }
.boton-verde { background: #25d366; }
.boton-rojo { background: var(--rojo); }
.boton-gris { background: #e9ebf2; color: var(--texto); }
.enlace { background: none; border: 0; color: var(--suave); font: inherit; cursor: pointer; padding: 0; }
.en-linea { display: inline; margin: 0; }

input, select, textarea {
    width: 100%; font: inherit; padding: 11px 12px; margin-top: 4px;
    border: 1px solid var(--borde); border-radius: 10px; background: #fff;
}
input[type=radio] { width: auto; margin: 0 6px 0 0; }
input.corto { width: 90px; display: inline-block; margin: 0 4px; padding: 6px 8px; }
label { display: block; margin-bottom: 14px; font-weight: 500; }
label.opcion { display: flex; align-items: center; flex-wrap: wrap; gap: 4px; font-weight: 400; }
label.opcion input[type=date] { width: auto; margin: 0 4px; padding: 6px 8px; }
fieldset { border: 1px solid var(--borde); border-radius: var(--radio); padding: 14px 16px; margin: 0 0 18px; background: #fff; }
legend { font-weight: 700; padding: 0 6px; }
.formulario { max-width: 560px; }
.dos { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.error { color: var(--rojo); font-size: .92rem; }
.error ul { margin: 0; padding-left: 18px; }
.aviso { background: #e8efff; color: #1d3fae; padding: 10px 14px; border-radius: 12px; }
.suave { color: var(--suave); font-size: .92rem; }

.entrar { max-width: 360px; margin: 10vh auto 0; background: #fff; padding: 28px; border-radius: 20px; border: 1px solid var(--borde); }
.entrar h1 { margin-bottom: 0; }
.entrar .boton { width: 100%; }

.cifras { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 18px; }
.cifra { background: #fff; border: 1px solid var(--borde); border-radius: var(--radio); padding: 14px; color: var(--texto); }
.cifra b { display: block; font-size: 1.7rem; }
.cifra span { color: var(--suave); font-size: .88rem; }

.buscador { display: flex; gap: 8px; align-items: center; margin-bottom: 14px; }
.buscador input { margin: 0; }

.lista { display: flex; flex-direction: column; gap: 8px; }
.fila {
    display: flex; justify-content: space-between; align-items: center; gap: 12px;
    background: #fff; border: 1px solid var(--borde); border-radius: var(--radio); padding: 14px 16px; color: var(--texto);
}
.fila strong { display: block; }
.fila .derecha { text-align: right; display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.codigo { font-family: ui-monospace, Consolas, monospace; color: var(--suave); font-size: .9rem; }

.pastilla { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: .82rem; font-weight: 700; }
.pastilla.verde { background: #e3f6ec; color: var(--verde); }
.pastilla.azul { background: #e8efff; color: var(--marca); }
.pastilla.rojo { background: #fdeaea; color: var(--rojo); }

.tarjeta { background: #fff; border: 1px solid var(--borde); border-radius: 20px; padding: 18px; margin-bottom: 14px; }
.tarjeta form { margin: 0 0 10px; }
.centrada { text-align: center; }
.codigo-grande {
    font-family: ui-monospace, Consolas, monospace; font-size: clamp(1.3rem, 6vw, 2.1rem);
    font-weight: 800; letter-spacing: 2px; margin: 6px 0 16px; word-break: break-all;
}
.acciones { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.datos { display: grid; grid-template-columns: 140px 1fr; gap: 8px 12px; margin: 0; }
.datos dt { color: var(--suave); }
.datos dd { margin: 0; font-weight: 500; }
.en-fila { display: flex; gap: 8px; align-items: center; }
.en-fila input { margin: 0; max-width: 220px; }
.historial { list-style: none; padding: 0; margin: 0; }
.historial li { padding: 8px 0; border-bottom: 1px solid var(--borde); font-size: .94rem; }
.historial li:last-child { border-bottom: 0; }
.historial .suave { margin-right: 6px; }
.volver { display: inline-block; margin-bottom: 12px; }
.vacio { text-align: center; padding: 40px 16px; color: var(--suave); }
.codigo-bloque { background: #f0f2f8; padding: 12px; border-radius: 10px; word-break: break-all; white-space: pre-wrap; }

@media (max-width: 600px) {
    .cifras { grid-template-columns: 1fr 1fr; }
    .dos { grid-template-columns: 1fr; }
    .datos { grid-template-columns: 1fr; gap: 2px; }
    .datos dd { margin-bottom: 8px; }
    .fila { flex-direction: column; align-items: flex-start; }
    .fila .derecha { align-items: flex-start; text-align: left; flex-direction: row; gap: 10px; }
    .barra nav { gap: 10px; }
}