:root {
  --fondo: #070b1f;
  --fondo-2: #10173a;
  --tarjeta: rgba(24, 33, 78, .72);
  --tarjeta-solida: #18214e;
  --borde: rgba(129, 147, 255, .22);
  --borde-fuerte: rgba(129, 147, 255, .45);
  --texto: #eef1ff;
  --suave: #a6b0de;
  --acento: #ffb547;
  --acento-2: #6fd3ff;
  --magenta: #ff5fd2;
  --ok: #4ade80;
  --alerta: #fbbf24;
  --peligro: #f87171;
  --radio: 16px;
  --sombra: 0 10px 30px rgba(0, 0, 0, .35);
  --titulo: "Avenir Next", "Segoe UI Variable Display", "Trebuchet MS", system-ui, sans-serif;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
html { background: var(--fondo); }
body {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(111, 211, 255, .12), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(255, 95, 210, .10), transparent 60%),
    linear-gradient(180deg, #0c1233 0%, var(--fondo) 55%) fixed;
  color: var(--texto);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  -webkit-tap-highlight-color: transparent;
}
.estrellas {
  position: fixed; inset: 0; pointer-events: none; opacity: .5; z-index: -1;
  background-image:
    radial-gradient(1px 1px at 20% 30%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 70% 10%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 40% 80%, #cfe 50%, transparent 51%),
    radial-gradient(1px 1px at 85% 60%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 10% 70%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 55% 45%, #ffd 50%, transparent 51%);
  background-size: 320px 320px;
}

main { max-width: 760px; margin: 0 auto; padding: 16px 16px 110px; }
h1, h2, h3 { line-height: 1.15; margin: 0 0 .4em; font-family: var(--titulo); }
h1 {
  font-size: clamp(2.6rem, 12vw, 4rem); letter-spacing: .14em; font-weight: 800; margin: 0;
  background: linear-gradient(90deg, #fff 0%, #ffd58a 45%, var(--acento) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 4px 18px rgba(255, 181, 71, .25));
}
h2 { font-size: 1.35rem; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 .8em; }
a { color: var(--acento-2); }
code { background: var(--fondo-2); padding: 1px 6px; border-radius: 6px; }
.suave { color: var(--suave); }
.chico { font-size: .85rem; }
.centrado { text-align: center; }
.cargando { text-align: center; margin-top: 30vh; color: var(--suave); }
.lema { color: var(--acento); font-weight: 700; letter-spacing: .22em; text-transform: uppercase; font-size: .78rem; margin: 14px 0 4px; }
.titulo-seccion { font-size: .8rem; letter-spacing: .18em; text-transform: uppercase; color: var(--suave); margin: 20px 0 10px; }
.titulo-mision { margin-top: 14px; font-size: 1.5rem; }
.pie { text-align: center; margin-top: 24px; }

.tarjeta {
  background: var(--tarjeta);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 16px;
  margin-bottom: 14px;
  backdrop-filter: blur(10px);
  box-shadow: var(--sombra);
}
details.tarjeta > summary { cursor: pointer; font-weight: 600; list-style: none; }
details.tarjeta > summary::-webkit-details-marker { display: none; }
details.tarjeta > summary::after { content: "▾"; float: right; color: var(--suave); }
details[open].tarjeta > summary { margin-bottom: 10px; }

/* Botones */
button, .boton {
  font: inherit; color: inherit; cursor: pointer;
  border: 1px solid var(--borde-fuerte); background: var(--fondo-2);
  border-radius: 14px; padding: 12px 16px; min-height: 48px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  text-decoration: none; transition: transform .12s, border-color .2s, background .2s, box-shadow .2s;
}
button:hover { border-color: var(--acento-2); }
button:active { transform: scale(.97); }
button:focus-visible, input:focus-visible, summary:focus-visible { outline: 3px solid var(--acento-2); outline-offset: 2px; }
button:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.primario {
  background: linear-gradient(180deg, #ffc76b, var(--acento)); color: #241500; border-color: #ffd28a;
  font-weight: 800; letter-spacing: .02em; box-shadow: 0 6px 20px rgba(255, 181, 71, .35), inset 0 1px 0 rgba(255, 255, 255, .5);
}
.primario:hover { border-color: #fff; box-shadow: 0 8px 26px rgba(255, 181, 71, .5); }
.secundario { background: rgba(111, 211, 255, .1); border-color: rgba(111, 211, 255, .5); font-weight: 600; }
.fantasma { background: transparent; border-color: transparent; padding: 8px 10px; min-height: 40px; color: var(--suave); }
.fantasma:hover { color: var(--texto); border-color: var(--borde); }
.pastilla { display: inline-flex; align-items: center; gap: 4px; font-size: .82rem; padding: 4px 10px; border-radius: 99px; background: var(--fondo-2); border: 1px solid var(--borde); color: var(--suave); }
.fila { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.fila > * { flex: 1 1 auto; }
.entre { display: flex; justify-content: space-between; align-items: center; gap: 10px; }

/* Escena isométrica */
.marco-escena {
  position: relative; border-radius: 20px; overflow: hidden; margin: 12px 0 14px;
  border: 1px solid var(--borde-fuerte);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .4), 0 18px 40px rgba(0, 0, 0, .45), inset 0 0 60px rgba(111, 211, 255, .08);
  background: #05081a;
}
.marco-escena .escena { display: block; width: 100%; height: auto; }
.marco-escena.hero { margin-top: 4px; }
.marco-escena.en-tormenta { border-color: rgba(255, 122, 61, .8); box-shadow: 0 0 30px rgba(255, 122, 61, .35); }
.marco-escena.falla { border-color: rgba(248, 113, 113, .7); }
.marco-escena.falla .escena { filter: saturate(.55) brightness(.75); }
.marco-escena.exito { border-color: rgba(74, 222, 128, .6); }
.sello {
  position: absolute; top: 14px; right: 14px; transform: rotate(6deg);
  border: 2px solid var(--peligro); color: var(--peligro); font-weight: 800; letter-spacing: .14em;
  padding: 4px 10px; border-radius: 8px; background: rgba(40, 8, 14, .7); font-size: .8rem;
}
.masa { position: absolute; left: 10px; right: 10px; bottom: 10px; background: rgba(7, 11, 31, .82); border: 1px solid var(--borde); border-radius: 12px; padding: 8px 12px; backdrop-filter: blur(6px); font-size: .9rem; }
.masa small { color: var(--peligro); }
.masa .barra { margin-top: 6px; }
.masa.alerta .barra > span { background: var(--alerta); }
.masa.peligro .barra > span { background: var(--peligro); }

/* Animaciones de la escena */
@keyframes titila { 0%, 100% { opacity: .2; } 50% { opacity: 1; } }
@keyframes brilla { 0%, 100% { opacity: .65; } 50% { opacity: 1; } }
@keyframes pulso { 0%, 100% { opacity: .55; } 50% { opacity: 1; } }
@keyframes cae { from { transform: translate(0, -60px); opacity: 0; } 20% { opacity: 1; } to { transform: translate(-40px, 80px); opacity: 0; } }
@keyframes flujo { to { stroke-dashoffset: -16; } }
@keyframes alarma { 0%, 100% { filter: none; } 50% { filter: drop-shadow(0 0 6px #f87171) brightness(1.2) sepia(1) hue-rotate(-40deg) saturate(4); } }
@keyframes camina { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-1.5px); } }
.escena .titila { animation: titila 2.4s infinite; }
.escena .brilla { animation: brilla 2s infinite; }
.escena .pulso { animation: pulso 1.6s infinite; }
.escena .particula { animation: cae 1.2s linear infinite; }
.escena .flujo { animation: flujo 1s linear infinite; }
.escena .apagado { animation: alarma 1s infinite; }
.escena .camina { animation: camina 1.4s ease-in-out infinite; transform-box: fill-box; }

/* Portada */
.portada { text-align: center; padding: 0 0 6px; }
.lista-misiones { display: grid; gap: 10px; }
.mision-btn {
  display: grid; grid-template-columns: auto 1fr auto; text-align: left; gap: 14px; padding: 14px 16px;
  background: var(--tarjeta); border: 1px solid var(--borde); border-radius: var(--radio); justify-content: stretch;
}
.mision-btn:hover { border-color: var(--acento); box-shadow: 0 0 0 1px var(--acento), 0 10px 30px rgba(255, 181, 71, .15); }
.mision-btn .num { font-family: var(--titulo); font-weight: 800; font-size: 1.6rem; color: var(--acento); opacity: .9; }
.mision-btn .info { display: flex; flex-direction: column; }
.estrellas-mini { color: var(--acento); letter-spacing: .1em; }
.estrellas-mini span, .estrellas-res span { color: rgba(255, 255, 255, .15); }
.jugador label { display: block; margin-bottom: 10px; font-size: .9rem; color: var(--suave); }
.jugador input { display: block; width: 100%; margin-top: 4px; font: inherit; color: var(--texto); background: var(--fondo-2); border: 1px solid var(--borde-fuerte); border-radius: 10px; padding: 10px 12px; }

/* Nebula */
.nebula { display: flex; gap: 12px; align-items: flex-start; margin: 0 0 14px; }
.nebula .cara {
  position: relative; flex: none; width: 54px; height: 54px; border-radius: 50%; display: grid; place-items: center; font-size: 1.9rem;
  background: radial-gradient(circle at 30% 30%, #4b56b8, #23296b); border: 2px solid #7b86e8; box-shadow: 0 0 18px rgba(123, 134, 232, .5);
}
.nebula .cara span { position: absolute; right: -6px; bottom: -4px; font-size: 1rem; }
.nebula .globo {
  background: linear-gradient(180deg, #2a3080, #222867); border: 1px solid #5f6ad0; border-radius: 4px 16px 16px 16px;
  padding: 10px 14px; flex: 1; box-shadow: var(--sombra);
}
.nebula .globo strong { display: block; color: var(--acento); font-size: .75rem; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 2px; }

/* Construcción */
.control { display: grid; grid-template-columns: 1fr auto; gap: 6px 12px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--borde); }
.control:last-child { border-bottom: 0; padding-bottom: 0; }
.control .nombre { font-weight: 600; }
.control .detalle { grid-column: 1 / -1; font-size: .82rem; color: var(--suave); }
.stepper { display: flex; align-items: center; gap: 6px; }
.stepper button { min-width: 44px; min-height: 44px; padding: 0; font-size: 1.3rem; border-radius: 12px; }
.stepper output { min-width: 3.4em; text-align: center; font-variant-numeric: tabular-nums; font-weight: 800; }
.interruptor { width: 62px; min-height: 36px; height: 36px; padding: 3px; border-radius: 99px; justify-content: flex-start; background: #20284f; }
.interruptor span { width: 28px; height: 28px; border-radius: 50%; background: #aeb6dc; transition: transform .2s, background .2s; }
.interruptor[aria-checked="true"] { background: linear-gradient(90deg, #1f6b46, #2f9d63); border-color: var(--ok); }
.interruptor[aria-checked="true"] span { transform: translateX(26px); background: #fff; }
.segmentos { display: flex; background: var(--fondo-2); border-radius: 12px; border: 1px solid var(--borde-fuerte); padding: 3px; gap: 3px; }
.segmentos button { border: 0; min-height: 38px; padding: 6px 12px; border-radius: 9px; background: transparent; }
.segmentos button[aria-pressed="true"] { background: var(--acento-2); color: #05202c; font-weight: 800; }

.barra { height: 10px; border-radius: 99px; background: rgba(0, 0, 0, .35); overflow: hidden; border: 1px solid var(--borde); }
.barra > span { display: block; height: 100%; background: linear-gradient(90deg, #2fbf71, var(--ok)); transition: width .3s; }

.resumen-diseno { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.dato { background: rgba(0, 0, 0, .25); border: 1px solid var(--borde); border-radius: 12px; padding: 8px 10px; }
.dato b { display: block; font-size: 1.05rem; font-variant-numeric: tabular-nums; font-family: var(--titulo); }
.dato small { color: var(--suave); display: block; font-size: .75rem; }
.dato.mal { border-color: rgba(248, 113, 113, .5); }
.dato.mal b { color: var(--peligro); }
.dato.bien b { color: var(--ok); }

/* HUD de misión */
.hud { position: sticky; top: 0; z-index: 6; margin: -16px -16px 0; padding: 10px 16px 10px; background: linear-gradient(180deg, rgba(7, 11, 31, .97), rgba(7, 11, 31, .88)); backdrop-filter: blur(8px); border-bottom: 1px solid var(--borde); }
.dia-hud { display: flex; align-items: baseline; gap: 6px; font-family: var(--titulo); font-size: 1.15rem; }
.dia-hud .cielo { font-size: 1.2rem; }
.hud-recursos { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-top: 8px; }
.chip {
  position: relative; display: flex; align-items: center; gap: 6px; padding: 5px 7px 7px; border-radius: 10px;
  background: rgba(24, 33, 78, .9); border: 1px solid var(--borde); overflow: hidden; min-width: 0;
}
.chip .ico { font-size: .95rem; }
.chip .val { display: flex; flex-direction: column; min-width: 0; line-height: 1.1; }
.chip b { font-size: .9rem; font-variant-numeric: tabular-nums; }
.chip small { font-size: .62rem; color: var(--suave); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chip i { position: absolute; left: 0; bottom: 0; height: 3px; background: var(--ok); }
.chip.alerta { border-color: rgba(251, 191, 36, .6); } .chip.alerta i { background: var(--alerta); }
.chip.peligro { border-color: rgba(248, 113, 113, .8); background: rgba(70, 20, 30, .9); animation: brilla 1.2s infinite; } .chip.peligro i { background: var(--peligro); }

.linea-tiempo { display: flex; gap: 4px; overflow-x: auto; padding: 2px 2px 10px; scrollbar-width: thin; margin-bottom: 6px; }
.linea-tiempo button {
  min-width: 34px; min-height: 44px; padding: 0; font-size: .72rem; border-radius: 9px;
  flex-direction: column; gap: 0; position: relative; flex: none; font-weight: 700;
}
.linea-tiempo .luz { background: linear-gradient(180deg, #4a3f15, #2d2710); border-color: #7a6a26; }
.linea-tiempo .noche { background: linear-gradient(180deg, #1b2457, #121839); border-color: #3b4a8f; }
.linea-tiempo .futuro { opacity: .35; }
.linea-tiempo .hoy { outline: 2px solid var(--acento); outline-offset: 1px; opacity: 1; box-shadow: 0 0 14px rgba(255, 181, 71, .5); }
.linea-tiempo .mal { background: linear-gradient(180deg, #5c1d27, #3a121a); border-color: var(--peligro); }
.linea-tiempo .refugio::after { content: ""; position: absolute; inset: auto 6px 3px; height: 3px; border-radius: 3px; background: var(--acento-2); }
.linea-tiempo .marca { font-size: .78rem; line-height: 1; }
.linea-tiempo button:not(:disabled):hover { border-color: var(--acento); }

.aviso { border: 1px solid rgba(251, 191, 36, .5); border-left: 4px solid var(--alerta); background: rgba(58, 46, 16, .85); padding: 10px 12px; border-radius: 12px; margin-bottom: 10px; }
.aviso.peligro { border-color: rgba(248, 113, 113, .5); border-left-color: var(--peligro); background: rgba(63, 24, 32, .85); }
.aviso.info { border-color: rgba(111, 211, 255, .4); border-left-color: var(--acento-2); background: rgba(16, 48, 74, .85); }

.decisiones { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 14px; }
.decision { flex-direction: column; align-items: flex-start; text-align: left; gap: 2px; padding: 10px; min-height: 96px; border-radius: 14px; background: var(--tarjeta); justify-content: flex-start; }
.decision .ico { font-size: 1.4rem; }
.decision b { font-size: .92rem; }
.decision small { color: var(--suave); font-size: .72rem; line-height: 1.25; }
.decision[aria-pressed="true"] { background: linear-gradient(180deg, rgba(111, 211, 255, .28), rgba(111, 211, 255, .1)); border-color: var(--acento-2); box-shadow: 0 0 0 1px var(--acento-2), 0 6px 18px rgba(111, 211, 255, .2); }
.decision[aria-pressed="true"] b::after { content: " ✓"; color: var(--acento-2); }

.barra-accion { position: fixed; left: 0; right: 0; bottom: 0; padding: 10px 16px calc(12px + env(safe-area-inset-bottom)); background: linear-gradient(180deg, rgba(7, 11, 31, 0), rgba(7, 11, 31, .95) 30%); z-index: 10; }
.barra-accion .fila { max-width: 728px; margin: 0 auto; }
.barra-accion .primario { flex: 3 1 auto; min-height: 54px; font-size: 1.05rem; }
.barra-accion .secundario { flex: 1 1 auto; min-height: 54px; }

.bitacora { max-height: 260px; overflow-y: auto; font-size: .86rem; padding-left: 1.1em; margin: 0; }
.bitacora li { margin-bottom: 4px; }

/* Resultado */
.cadena { list-style: none; padding: 0; margin: 0 0 4px; counter-reset: paso; }
.cadena li { counter-increment: paso; background: rgba(0, 0, 0, .3); border: 1px solid var(--borde); border-radius: 12px; padding: 10px 12px 10px 44px; position: relative; margin-bottom: 22px; }
.cadena li::before { content: counter(paso); position: absolute; left: 10px; top: 50%; transform: translateY(-50%); width: 24px; height: 24px; border-radius: 50%; background: var(--fondo-2); border: 1px solid var(--acento); color: var(--acento); font-size: .8rem; font-weight: 800; display: grid; place-items: center; }
.cadena li:not(:last-child)::after { content: "↓"; position: absolute; left: 50%; bottom: -21px; transform: translateX(-50%); color: var(--acento); font-weight: 800; }
.cadena li:last-child { border-color: var(--peligro); background: rgba(63, 24, 32, .6); margin-bottom: 0; }
.cadena li:last-child::before { border-color: var(--peligro); color: var(--peligro); }
.cifra-nasa { border: 1px solid rgba(111, 211, 255, .35); background: linear-gradient(180deg, rgba(16, 48, 74, .75), rgba(12, 30, 50, .75)); border-radius: 14px; padding: 12px 14px; margin-bottom: 10px; }
.cifra-nasa .etiqueta { font-size: .7rem; letter-spacing: .14em; color: var(--acento-2); font-weight: 800; margin-bottom: 4px; }
.cifra-nasa p { margin-bottom: 6px; }
.estrellas-res { font-size: 2.6rem; letter-spacing: .2em; color: var(--acento); text-shadow: 0 0 20px rgba(255, 181, 71, .6); margin-bottom: 12px; }

.tabla-fuentes { width: 100%; border-collapse: collapse; font-size: .9rem; }
.tabla-fuentes td { border-bottom: 1px solid var(--borde); padding: 10px 4px; vertical-align: top; }
.etq { display: inline-block; font-size: .72rem; padding: 2px 8px; border-radius: 99px; background: rgba(74, 222, 128, .15); color: var(--ok); white-space: nowrap; }
.etq.pendiente { background: rgba(251, 191, 36, .15); color: var(--alerta); }

@media (max-width: 380px) {
  .hud-recursos { grid-template-columns: repeat(3, 1fr); }
  .decisiones { grid-template-columns: 1fr; }
  .decision { min-height: 0; }
}
@media (min-width: 640px) {
  .resumen-diseno { grid-template-columns: repeat(4, 1fr); }
  .hud-recursos { grid-template-columns: repeat(7, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  *, .escena * { animation: none !important; transition: none !important; }
}

/* ── Evaluación: pruebas y rúbrica ── */
.progreso-eval { display: flex; gap: 6px; margin: 4px 0 16px; }
.progreso-eval span { flex: 1; height: 6px; border-radius: 99px; background: rgba(255, 255, 255, .12); }
.progreso-eval .hecho { background: var(--acento-2); }
.progreso-eval .actual { background: var(--acento); box-shadow: 0 0 10px rgba(255, 181, 71, .6); }
.pregunta { font-size: 1.3rem; margin: 6px 0 18px; }
.opciones { display: grid; gap: 10px; }
.opcion { justify-content: flex-start; text-align: left; gap: 12px; padding: 14px; min-height: 60px; background: var(--tarjeta); border-radius: 14px; font-size: 1rem; }
.opcion:hover { border-color: var(--acento); }
.opcion .letra { flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--fondo-2); border: 1px solid var(--acento); color: var(--acento); font-weight: 800; font-size: .9rem; }
.revision.bien { border-color: rgba(74, 222, 128, .5); }
.revision.mal { border-color: rgba(248, 113, 113, .5); }
.revision h3 { font-size: 1rem; }
.nivel-res { font-family: var(--titulo); margin: 6px 0 10px; }
.nivel-res b { font-size: 3.4rem; color: var(--acento); text-shadow: 0 0 24px rgba(255, 181, 71, .5); }
.nivel-res span { font-size: 1.4rem; color: var(--suave); }
.nivel-res.nivel-AD b, .nivel-res.nivel-A b { color: var(--ok); text-shadow: 0 0 24px rgba(74, 222, 128, .45); }
.nivel-res.nivel-C b { color: var(--peligro); text-shadow: none; }
.criterio-res { padding: 10px 0; border-bottom: 1px solid var(--borde); }
.criterio-res:last-child { border-bottom: 0; }
.criterio-res p { margin: 4px 0 0; }
.puntos { font-weight: 800; padding: 2px 10px; border-radius: 99px; font-size: .85rem; }
.puntos.p2 { background: rgba(74, 222, 128, .18); color: var(--ok); }
.puntos.p1 { background: rgba(251, 191, 36, .18); color: var(--alerta); }
.puntos.p0 { background: rgba(248, 113, 113, .18); color: var(--peligro); }
.caso { border-color: rgba(248, 113, 113, .45); }
.bitacora-caso { margin: 8px 0 0; padding-left: 1.2em; font-size: .92rem; }
.bitacora-caso li { margin-bottom: 4px; }
.bitacora-caso li:last-child { color: var(--peligro); font-weight: 600; }
.aprendizaje h3 { margin: 0; }
.fila-eval { display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center; padding: 10px 0; border-top: 1px solid var(--borde); }
.fila-eval:first-of-type { margin-top: 10px; }
.fila-eval .ico { font-size: 1.4rem; }
.fila-eval .info { display: flex; flex-direction: column; }
.fila-eval button { min-height: 40px; padding: 6px 14px; }
.fila-eval.hecho .info b::after { content: " ✓"; color: var(--ok); }
.comparacion { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: center; margin: 12px 0; }
.comparacion b { display: block; font-family: var(--titulo); font-size: 1.8rem; margin-bottom: 4px; }
.comparacion .flecha { font-size: 1.6rem; color: var(--acento); }

.tabla-scroll { overflow-x: auto; margin: 0 -4px; }
.tabla-scroll td { white-space: nowrap; }