:root {
  --grafito: #2a2623;
  --gris: #545454;
  --piedra: #ebe9e4;
  --blanco: #ffffff;
  --texto: #2a2623;
  --texto-2: #5d5853;
  --naranja: #ff914d;
  --naranja-2: #f07a33;
  --sol: #fbdc2b;
  --linea: #d9d5ce;
  --verde: #2f7d4f;
  --rojo: #b3261e;
  --ancho: 1080px;
}
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
body {
  font-family: "Archivo", system-ui, sans-serif;
  font-size: 1.0625rem; line-height: 1.6; color: var(--texto); background: var(--blanco);
  -webkit-font-smoothing: antialiased; min-height: 100vh; display: flex; flex-direction: column;
}
main { flex: 1; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--naranja); outline-offset: 3px; border-radius: 4px; }
.ancho { width: min(100% - 2rem, var(--ancho)); margin-inline: auto; }
h1, h2, h3 { line-height: 1.12; font-weight: 700; }
h1 { font-size: clamp(1.9rem, 5vw, 3rem); font-variation-settings: "wdth" 125; letter-spacing: -.02em; }
h2 { font-size: clamp(1.4rem, 3.4vw, 2rem); font-variation-settings: "wdth" 115; margin-bottom: .75rem; }
h3 { font-size: 1.15rem; }
p + p { margin-top: .75rem; }
.bajada { color: var(--texto-2); font-size: 1.15rem; max-width: 40rem; }
.oculto { display: none !important; }

/* Cabecera */
.cabecera { background: var(--gris); color: var(--blanco); }
.cabecera .ancho { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .85rem 0; }
.marca { display: flex; align-items: center; gap: .6rem; text-decoration: none; }
.marca img { width: 38px; height: 38px; }
.marca b { font-variation-settings: "wdth" 125; display: block; line-height: 1.1; }
.marca small { font-size: .78rem; color: #e4e0da; }
.sesion { display: flex; align-items: center; gap: .75rem; font-size: .9rem; }
.sesion a, .sesion button { color: #e4e0da; }
.sesion .nombre { max-width: 12rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Portada */
.portada { background: var(--grafito); color: var(--blanco); padding: 2.5rem 0 2.75rem; }
.portada .bajada { color: #e4e0da; margin-top: .9rem; }
.etiqueta { display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--sol); margin-bottom: .6rem; }

.bloque { padding: 2.25rem 0; }
.piedra { background: var(--piedra); }

/* Botones */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; font: inherit; font-weight: 600; font-size: 1rem;
  padding: .8rem 1.2rem; border-radius: 10px; border: 1px solid transparent; cursor: pointer; text-decoration: none; transition: background-color .2s; }
.btn-sol { background: var(--naranja); color: var(--grafito); }
.btn-sol:hover { background: var(--sol); }
.btn-linea { border-color: currentColor; background: transparent; color: inherit; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.btn-texto { background: none; border: 0; font: inherit; text-decoration: underline; cursor: pointer; color: inherit; }
.acciones { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.25rem; }

/* Tarjetas */
.rejilla { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.tarjeta { background: var(--blanco); border: 1px solid var(--linea); border-radius: 14px; padding: 1.25rem; display: flex; flex-direction: column; gap: .6rem; }
.tarjeta p { color: var(--texto-2); font-size: .98rem; }
.tarjeta .btn { margin-top: auto; align-self: flex-start; }
.meta { display: flex; flex-wrap: wrap; gap: .4rem; font-size: .82rem; }
.meta span { background: var(--piedra); border-radius: 999px; padding: .15rem .6rem; }
.borrador { background: var(--sol) !important; }
.barra { height: 8px; background: var(--piedra); border-radius: 999px; overflow: hidden; }
.barra i { display: block; height: 100%; background: var(--naranja); }

/* Formularios */
form { display: grid; gap: 1rem; max-width: 34rem; }
label { display: grid; gap: .3rem; font-weight: 600; font-size: .95rem; }
label small { font-weight: 400; color: var(--texto-2); }
input[type=text], input[type=email], input[type=number], input[type=date], select { font: inherit; padding: .7rem .8rem; border: 1px solid var(--linea); border-radius: 10px; background: var(--blanco); width: 100%; }
.casilla { display: flex; gap: .6rem; align-items: flex-start; font-weight: 400; }
.casilla input { margin-top: .35rem; width: 1.1rem; height: 1.1rem; flex: none; }
.aviso { border-left: 4px solid var(--naranja); background: #fff7f1; padding: .8rem 1rem; border-radius: 0 10px 10px 0; font-size: .95rem; }
.aviso.bien { border-color: var(--verde); background: #eef7f1; }
.aviso.mal { border-color: var(--rojo); background: #fcefee; }
.mensaje-error { color: var(--rojo); font-weight: 600; }

/* Curso */
.curso-grid { display: grid; gap: 1.5rem; }
@media (min-width: 860px) { .curso-grid { grid-template-columns: 280px 1fr; align-items: start; } .indice { position: sticky; top: 1rem; } }
.indice ol { list-style: none; display: grid; gap: .35rem; }
.indice button { width: 100%; text-align: left; font: inherit; font-size: .95rem; background: var(--blanco); border: 1px solid var(--linea); border-radius: 10px; padding: .6rem .75rem; cursor: pointer; display: flex; gap: .5rem; align-items: center; }
.indice button[aria-current=true] { border-color: var(--naranja); box-shadow: inset 3px 0 0 var(--naranja); }
.indice .marca-vista { width: 1.3rem; height: 1.3rem; border-radius: 50%; border: 2px solid var(--linea); flex: none; display: grid; place-items: center; font-size: .75rem; }
.indice .vista .marca-vista { background: var(--verde); border-color: var(--verde); color: var(--blanco); }
.leccion { background: var(--blanco); border: 1px solid var(--linea); border-radius: 14px; padding: clamp(1.1rem, 3vw, 2rem); }
.leccion .contenido { margin-top: 1rem; }
.leccion .contenido ol, .leccion .contenido ul { margin: .75rem 0 .75rem 1.3rem; display: grid; gap: .35rem; }
.navegacion { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .75rem; margin-top: 1.5rem; }

/* Video liviano */
.video { position: relative; aspect-ratio: 16/9; background: var(--grafito); border-radius: 12px; overflow: hidden; margin-top: 1rem; }
.video button { all: unset; cursor: pointer; position: absolute; inset: 0; display: grid; place-items: center; background-size: cover; background-position: center; }
.video button span { background: var(--naranja); color: var(--grafito); font-weight: 700; padding: .7rem 1.1rem; border-radius: 999px; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* Evaluación */
fieldset { border: 1px solid var(--linea); border-radius: 12px; padding: 1rem; display: grid; gap: .5rem; }
legend { font-weight: 700; padding: 0 .4rem; }
fieldset label { font-weight: 400; display: flex; gap: .6rem; align-items: flex-start; }
fieldset input { margin-top: .4rem; }

/* Tablas */
.tabla { width: 100%; border-collapse: collapse; font-size: .92rem; }
.tabla th, .tabla td { text-align: left; padding: .55rem .5rem; border-bottom: 1px solid var(--linea); vertical-align: top; }
.tabla th { font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--texto-2); }
.desliza { overflow-x: auto; }
code { font-family: ui-monospace, monospace; background: var(--piedra); padding: .1rem .35rem; border-radius: 6px; }

/* Ventana de autorización */
dialog { border: 0; border-radius: 16px; padding: 0; width: min(100% - 1.5rem, 36rem); max-height: 92vh; }
dialog::backdrop { background: rgba(42, 38, 35, .6); }
dialog .interior { padding: 1.4rem; display: grid; gap: .9rem; }
dialog ul { margin-left: 1.2rem; display: grid; gap: .3rem; font-size: .95rem; }

/* Pie */
.pie { background: var(--grafito); color: #e4e0da; font-size: .85rem; padding: 1.75rem 0; margin-top: 2rem; }
.pie .ancho { display: grid; gap: .6rem; }
.pie a { color: var(--blanco); }

/* Ajustes */
.portada .meta span { color: var(--grafito); }
dialog { margin: auto; }
@media (max-width: 520px) { .marca small { display: none; } .sesion { gap: .55rem; } }
code { white-space: nowrap; }

/* Catálogo por rutas */
.modulo0 { border: 1px solid var(--linea); border-left: 6px solid var(--sol); border-radius: 14px; padding: 1.2rem 1.3rem; display: grid; gap: .5rem; margin-top: 1rem; max-width: 46rem; }
.modulo0 small, .ruta-det small { font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--texto-2); }
.lista-rutas { display: grid; gap: .7rem; margin-top: 1.2rem; }
.ruta-det { border: 1px solid var(--linea); border-radius: 14px; overflow: hidden; }
.ruta-det summary { cursor: pointer; padding: 1rem 1.2rem; display: grid; gap: .15rem; list-style: none; min-height: 44px; }
.ruta-det summary::-webkit-details-marker { display: none; }
.ruta-det summary b { font-size: 1.1rem; }
.ruta-det summary span { color: var(--texto-2); font-size: .95rem; }
.ruta-det[open] summary { background: var(--grafito); color: var(--blanco); }
.ruta-det[open] summary small { color: var(--sol); }
.ruta-det[open] summary span { color: #e4e0da; }
.peldanos { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.peldano { padding: 1rem 1.2rem 1.2rem; border-top: 1px solid var(--linea); display: grid; gap: .7rem; align-content: start; }
.peldano h3 { font-size: 1rem; display: flex; gap: .45rem; align-items: baseline; }
.peldano h3 i { font-style: normal; font-variation-settings: "wdth" 125; font-size: 1.5rem; color: var(--naranja-2); }
.mod { display: grid; gap: .2rem; }
.mod p { font-size: .9rem; color: var(--texto-2); }
.mod .estado { font-size: .78rem; font-weight: 600; color: var(--texto-2); }
.mod a { font-weight: 600; }
.ruta-nota { background: var(--piedra); padding: .8rem 1.2rem; font-size: .9rem; }
.chip { display: inline-block; font-size: .72rem; font-weight: 600; letter-spacing: .02em; color: var(--texto-2); background: var(--piedra); border-radius: 999px; padding: .1rem .55rem; margin-left: .3rem; font-variation-settings: "wdth" 100; }
.mod.pendiente b { color: var(--texto-2); font-weight: 600; }
.nota-ingreso { color: #e4e0da; font-size: .9rem; margin-top: .6rem; }
.aporte { margin-top: .8rem; font-size: .92rem; color: var(--texto-2); }

/* Opción A · Piedra y naranja (10 nov): portada en gris de marca y programas abiertos en piedra */
.portada { background: var(--gris); }
.ruta-det[open] summary { background: var(--piedra); color: var(--grafito); box-shadow: inset 0 -3px 0 var(--naranja); }
.ruta-det[open] summary small { color: var(--naranja-2); }
.ruta-det[open] summary span { color: var(--texto-2); }

/* ---------- Tarjetas de repaso ---------- */
.tj-herr { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin-bottom: .8rem; }
.tj-boton { font: inherit; font-size: .9rem; border: 1px solid var(--linea); background: var(--blanco); color: var(--grafito); border-radius: 12px; padding: .55rem .9rem; min-height: 44px; cursor: pointer; }
.tj-boton[aria-pressed="true"] { background: var(--piedra); box-shadow: inset 0 -3px 0 var(--naranja); font-weight: 600; }
.tj-cuenta { margin-left: auto; font-size: .85rem; color: var(--texto-2); }
.tj-escena { perspective: 1400px; height: 470px; touch-action: pan-y; }
.tj-tarjeta { position: relative; width: 100%; height: 100%; transform-style: preserve-3d; transition: transform .55s cubic-bezier(.2, .7, .2, 1); cursor: pointer; }
.tj-tarjeta.volteada { transform: rotateY(180deg); }
.tj-tarjeta:focus-visible { outline: 3px solid var(--naranja); outline-offset: 4px; border-radius: 20px; }
.tj-cara { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; border-radius: 20px; padding: 1.3rem; display: flex; flex-direction: column; background: var(--blanco); border: 1px solid var(--linea); box-shadow: 0 10px 24px -14px rgba(42, 38, 35, .35); overflow: hidden; }
.tj-frente { border-top: 5px solid var(--naranja); }
.tj-reverso { transform: rotateY(180deg); overflow-y: auto; background: var(--piedra); }
.tj-reverso p { font-size: .98rem; line-height: 1.5; margin-top: .2rem; }
.tj-cab { display: flex; gap: .8rem; align-items: center; }
.tj-distintivo { min-width: 3.4rem; height: 3.4rem; padding: 0 .4rem; border-radius: 14px; display: grid; place-items: center; background: var(--sol); color: var(--grafito); font-weight: 800; font-size: 1rem; font-stretch: 112%; }
.tj-fecha { font-size: .85rem; color: var(--texto-2); }
.tj-marca { font-size: .8rem; font-weight: 700; color: var(--verde); }
.tj-termino { margin-top: auto; font-size: clamp(1.6rem, 6.5vw, 2.2rem); line-height: 1.15; font-weight: 800; font-stretch: 112%; color: var(--grafito); }
.tj-pista { margin-top: auto; padding-top: 1rem; text-align: center; font-size: .85rem; color: var(--texto-2); }
.tj-termino-chico { font-weight: 800; font-size: 1.15rem; }
.tj-alt { font-style: italic; color: var(--texto-2); }
.tj-etq { margin-top: .9rem !important; font-size: .72rem !important; letter-spacing: .12em; text-transform: uppercase; font-weight: 700; color: var(--naranja-2); }
.tj-en { color: var(--texto-2); }
.tj-frase { border-left: 3px solid var(--naranja); background: var(--blanco); padding: .5rem .8rem; border-radius: 0 10px 10px 0; }
.tj-enlaces { display: grid; gap: .4rem; margin-top: 1rem; }
.tj-enlaces a { display: block; border: 1px solid var(--linea); background: var(--blanco); color: var(--grafito); border-radius: 10px; padding: .6rem .8rem; font-size: .9rem; font-weight: 600; text-decoration: none; }
.tj-nav { display: flex; gap: .5rem; margin-top: .9rem; }
.tj-nav .tj-boton { flex: 1; }
.tj-nav #tj-ant, .tj-nav #tj-sig { flex: 0 0 3.4rem; }
.tj-sabe { background: #e6f2ea; border-color: #b9d9c4; font-weight: 700; }
.tj-repasar { background: #fbe9df; border-color: #f2c4a8; font-weight: 700; }
.tj-avance { height: 5px; background: var(--linea); border-radius: 5px; margin-top: .8rem; overflow: hidden; }
.tj-avance i { display: block; height: 100%; width: 0; background: var(--verde); transition: width .3s; }
.tj-ayuda { font-size: .82rem; color: var(--texto-2); margin-top: .6rem; }
.tj-vacio { display: grid; place-items: center; height: 100%; text-align: center; color: var(--texto-2); background: var(--blanco); border-radius: 20px; border: 1px dashed var(--linea); padding: 1rem; }
.tj-seccion { margin-top: 2rem; }
@media (prefers-reduced-motion: reduce) { .tj-tarjeta { transition: none; } }

/* ---------- Desbloqueo ---------- */
.desbloqueo h2 { margin: .3rem 0 1rem; }
.desbloqueo-opciones { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); }
.desbloqueo-caja { background: var(--blanco); border: 1px solid var(--linea); border-radius: 16px; padding: 1.2rem; display: grid; gap: .6rem; align-content: start; border-top: 4px solid var(--naranja); }
.desbloqueo-caja h3 { font-size: 1.15rem; }
.nota-pequena { font-size: .85rem; color: var(--texto-2); }
.precio-personal b { font-size: 1.6rem; } .precio-personal { color: var(--texto-2); }