:root {
  --navy: #0a1428; --navy-2: #12254a; --azul: #2f6bff; --azul-oscuro: #1f50d6; --azul-claro: #eaf0ff; --cian: #22d3ee;
  --fondo: #f3f5f9; --papel: #ffffff; --tinta: #0f172a; --suave: #5a6882; --linea: #e1e6ef; --gris: #eef1f7;
  --ok: #0f8a5f; --alerta: #b45309; --error: #c0301f;
  --mono: ui-monospace, "Cascadia Code", Consolas, Menlo, monospace;
}
* { box-sizing: border-box; }
html { font-size: 17px; }
body { margin: 0; background: var(--fondo); color: var(--tinta); line-height: 1.6; position: relative;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }

/* banda oscura de fondo, con una trama fina */
.banda { position: absolute; inset: 0 0 auto 0; height: 300px; z-index: 0;
  background:
    linear-gradient(180deg, rgba(10,20,40,0) 55%, var(--fondo) 100%),
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px) 0 0 / 36px 36px,
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px) 0 0 / 36px 36px,
    radial-gradient(900px 300px at 80% 0%, rgba(47,107,255,.35), transparent 70%),
    var(--navy); }

/* barra superior */
.barra { position: sticky; top: 0; z-index: 10; background: rgba(10,20,40,.94); backdrop-filter: blur(8px); color: #e8eefc; }
.barra-in { max-width: 780px; margin: 0 auto; padding: 12px 20px; display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.marca { display: flex; align-items: center; gap: 10px; }
.logo { font-family: var(--mono); font-weight: 700; font-size: .85rem; letter-spacing: .04em; color: #fff;
  background: linear-gradient(135deg, var(--azul), var(--cian)); border-radius: 8px; padding: 5px 9px; }
.marca-txt { font-size: .92rem; font-weight: 600; letter-spacing: .01em; }
.barra-estado { display: flex; align-items: center; gap: 14px; font-size: .85rem; }
.barra-modulo { color: #9fb2d6; }
.reloj { font-family: var(--mono); font-variant-numeric: tabular-nums; font-weight: 600; color: #fff;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.16); border-radius: 99px; padding: 3px 12px; }
.reloj.poco { color: #fbbf24; }
.reloj.critico { color: #fb7185; }
.progreso { height: 3px; background: rgba(255,255,255,.12); overflow: hidden; }
.progreso-relleno { height: 100%; width: 100%; background: linear-gradient(90deg, var(--cian), var(--azul));
  transform: scaleX(0); transform-origin: left; transition: transform .25s; }

.caja { position: relative; z-index: 1; max-width: 780px; margin: 0 auto; padding: 34px 20px 90px; }
.pantalla { background: var(--papel); border: 1px solid var(--linea); border-radius: 14px; padding: 30px 30px 28px;
  box-shadow: 0 1px 2px rgba(10,20,40,.05), 0 16px 40px -12px rgba(10,20,40,.22); }
.pantalla[hidden], [hidden] { display: none !important; }
h1 { font-size: 1.6rem; line-height: 1.22; margin: 0 0 14px; letter-spacing: -.01em; }
p { margin: 0 0 14px; }
.etiqueta, .parte-num { font-family: var(--mono); color: var(--azul); font-weight: 600; font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 8px; }
.parte-num { font-size: .95rem; }
.suave { color: var(--suave); font-size: .9rem; }
.lista { padding-left: 1.2em; margin: 0 0 22px; }
.lista li { margin-bottom: 9px; }
.lista li::marker { color: var(--azul); }
.error { color: var(--error); font-weight: 600; }
.aviso { background: #fff7e6; border: 1px solid #f1d9a6; color: #7a4a05; padding: 10px 14px; border-radius: 10px; }

label.campo { display: block; font-weight: 600; margin: 20px 0 6px; font-size: .95rem; }
input[type=text], input[type=password], textarea { width: 100%; font: inherit; color: inherit; background: #fff; border: 1.5px solid var(--linea);
  border-radius: 10px; padding: 12px 14px; transition: border-color .15s, box-shadow .15s; }
input[type=text]:focus, input[type=password]:focus, textarea:focus { outline: none; border-color: var(--azul); box-shadow: 0 0 0 4px rgba(47,107,255,.15); }
textarea { min-height: 180px; resize: vertical; line-height: 1.55; }
.consent { display: flex; gap: 10px; align-items: flex-start; margin: 18px 0; cursor: pointer; }
.consent input { width: 20px; height: 20px; margin-top: 4px; flex: none; accent-color: var(--azul); }

button { font: inherit; border-radius: 10px; padding: 12px 24px; cursor: pointer; border: 1.5px solid transparent; transition: background .15s, border-color .15s, box-shadow .15s; }
button.primario { background: linear-gradient(180deg, #3d78ff, var(--azul-oscuro)); color: #fff; font-weight: 600; box-shadow: 0 6px 16px -6px rgba(47,107,255,.7); }
button.primario:hover:not(:disabled) { box-shadow: 0 8px 22px -6px rgba(47,107,255,.85); }
button.secundario { background: #fff; color: var(--tinta); border-color: var(--linea); }
button.secundario:hover:not(:disabled) { border-color: #b9c3d6; background: var(--gris); }
button:disabled { opacity: .45; cursor: not-allowed; box-shadow: none; }
button:focus-visible { outline: 3px solid rgba(47,107,255,.35); outline-offset: 2px; }
.botones { display: flex; justify-content: space-between; gap: 12px; margin-top: 28px; flex-wrap: wrap; }

/* preguntas */
.pregunta-num { font-family: var(--mono); color: var(--suave); font-size: .78rem; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 8px; }
.enunciado { font-size: 1.12rem; font-weight: 650; margin-bottom: 14px; line-height: 1.45; }
.datos { background: var(--gris); border: 1px solid var(--linea); border-radius: 10px; padding: 12px 14px; margin: 0 0 16px; font-size: .95rem; overflow-x: auto; }
pre.datos { font-family: var(--mono); white-space: pre-wrap; font-size: .88rem; }
table.datos { border-collapse: collapse; }
table.datos th { font-family: var(--mono); font-size: .75rem; letter-spacing: .06em; text-transform: uppercase; color: var(--suave); }
table.datos th, table.datos td { padding: 6px 16px 6px 0; border-bottom: 1px solid var(--linea); text-align: left; }
.opciones { display: grid; gap: 10px; }
.opcion { display: flex; gap: 12px; align-items: flex-start; border: 1.5px solid var(--linea); border-radius: 10px; padding: 13px 15px; cursor: pointer; background: #fff; transition: border-color .15s, background .15s; }
.opcion:hover { border-color: #b9c3d6; }
.opcion input { margin-top: 5px; width: 18px; height: 18px; flex: none; accent-color: var(--azul); }
.opcion.elegida { border-color: var(--azul); background: var(--azul-claro); box-shadow: inset 3px 0 0 var(--azul); }
.opcion:focus-within { outline: 3px solid rgba(47,107,255,.25); outline-offset: 2px; }
.contador { text-align: right; font-family: var(--mono); font-size: .78rem; color: var(--suave); margin-top: 6px; }
.contador.ok { color: var(--ok); }

/* autoevaluación */
.escala-fila { padding: 14px 0; border-bottom: 1px solid var(--linea); }
.escala-fila:last-of-type { border-bottom: 0; }
.escala-t { font-weight: 600; margin-bottom: 8px; }
.escala-btns { display: flex; gap: 8px; }
.escala-btns label { flex: 1; text-align: center; border: 1.5px solid var(--linea); border-radius: 10px; padding: 8px 0; cursor: pointer; background: #fff; font-family: var(--mono); transition: background .15s, border-color .15s; }
.escala-btns label:hover { border-color: #b9c3d6; }
.escala-btns label.elegida { background: var(--azul); border-color: var(--azul); color: #fff; font-weight: 700; }
.escala-btns input { position: absolute; opacity: 0; pointer-events: none; }
.escala-btns label:focus-within { outline: 3px solid rgba(47,107,255,.3); outline-offset: 2px; }
.escala-ref { display: flex; justify-content: space-between; font-size: .78rem; color: var(--suave); margin-top: 4px; }

/* revisión */
.rev-fila { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--linea); }
.rev-estado { font-family: var(--mono); font-size: .85rem; color: var(--suave); }
.rev-estado.completo { color: var(--ok); font-weight: 600; }
.rev-estado.falta { color: var(--alerta); font-weight: 600; }
button.link { background: none; border: 0; color: var(--azul); padding: 4px 8px; text-decoration: underline; }

@media (max-width: 560px) {
  html { font-size: 16px; }
  .pantalla { padding: 22px 18px; }
  .marca-txt { display: none; }
  .botones button { flex: 1; }
  .barra-modulo { display: none; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }