:root {
  color-scheme: dark;
  --fondo: #07111f;
  --tarjeta: rgba(16, 32, 51, 0.92);
  --texto: #f4f7fb;
  --muted: #b7c3d6;
  --accent: #f0c14b;
  --cian: #3ee0c5;
  --ok: #7dcea0;
  --mal: #e07a7a;
  --linea: #2c3e5a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 12% -10%, rgba(62, 224, 197, 0.16), transparent 32%),
    radial-gradient(circle at 100% 0%, rgba(240, 193, 75, 0.12), transparent 28%),
    var(--fondo);
  color: var(--texto);
}

main {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 56px;
}

.marca {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
}

.emblema-caja {
  position: relative;
  width: 76px;
  height: 76px;
  flex: 0 0 76px;
}

.anillo {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1.5px dashed var(--cian);
  animation: orbita 14s linear infinite;
}

.emblema {
  width: 76px;
  height: 76px;
  display: block;
}

.marca h1 {
  margin: 0;
  font-size: 2rem;
  letter-spacing: 0.01em;
}

.marca p {
  margin: 0;
  letter-spacing: 0.22em;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
}

.marca span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
}

.escenario {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
  align-items: start;
}

.escenario:has(#acceso.oculto) {
  grid-template-columns: 1fr;
}

.laboratorio,
.tarjeta {
  background: var(--tarjeta);
  border: 1px solid rgba(62, 224, 197, 0.28);
  border-radius: 22px;
  padding: 20px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.22);
}

.kicker {
  margin: 0 0 6px;
  color: var(--cian);
  letter-spacing: 0.16em;
  font-size: 0.75rem;
  font-weight: 700;
}

.laboratorio h2,
.cuenta h2 {
  margin: 0 0 8px;
}

.estaciones {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.estacion {
  width: auto;
  margin: 0;
  padding: 10px 14px;
  border-radius: 999px;
  background: transparent;
  color: var(--texto);
  border: 1px solid var(--linea);
}

.estacion.activa {
  background: var(--accent);
  color: #07111f;
  border-color: var(--accent);
}

.muestra {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(7, 17, 31, 0.72);
  border: 1px solid var(--linea);
}

.muestra .en {
  margin: 0;
  font-size: 1.25rem;
}

.muestra .es {
  margin: 6px 0 0;
  color: var(--muted);
}

.muestra .texto {
  width: auto;
  margin-top: 8px;
  padding: 8px 0;
}

.pasos {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 16px 0;
  padding: 0;
}

.pasos li {
  margin: 0;
  padding: 12px;
  border-radius: 16px;
  background: rgba(7, 17, 31, 0.55);
  border: 1px solid var(--linea);
}

.pasos strong,
.pasos span {
  display: block;
}

.pasos strong { color: var(--accent); }
.pasos span { color: var(--muted); margin-top: 4px; }

label, .ayuda {
  display: block;
  color: var(--muted);
  margin: 14px 0 6px;
}

input[type="email"],
input[type="password"],
input[type="text"],
select,
textarea {
  width: 100%;
  border: 1px solid var(--linea);
  background: #07111f;
  color: var(--texto);
  border-radius: 12px;
  padding: 14px;
  font-size: 1rem;
  font-family: inherit;
}

textarea { min-height: 88px; }

.bloque {
  margin-top: 28px;
  padding-top: 8px;
  border-top: 1px solid var(--linea);
}

.trampa {
  position: absolute;
  left: -9999px;
}

button, .boton {
  display: inline-block;
  width: 100%;
  margin-top: 14px;
  border: 0;
  border-radius: 12px;
  padding: 14px;
  background: var(--accent);
  color: #07111f;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

button:disabled {
  opacity: 0.45;
  cursor: default;
}

.texto {
  background: transparent;
  color: var(--cian);
}

input[type="range"] {
  --p: 0%;
  width: 100%;
  height: 28px;
  margin: 0;
  appearance: none;
  background: transparent;
  accent-color: var(--cian);
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cian) var(--p), #1c2c44 var(--p));
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 22px;
  height: 22px;
  margin-top: -6px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #07111f;
}

input[type="range"]::-moz-range-track {
  height: 10px;
  border-radius: 999px;
  background: #1c2c44;
}

input[type="range"]::-moz-range-progress {
  height: 10px;
  border-radius: 999px;
  background: var(--cian);
}

.error { color: var(--mal); min-height: 1.2em; }

.licencia {
  color: var(--ok);
  font-weight: 700;
}

ol { padding-left: 1.2rem; }

li { margin: 8px 0; }

.ios {
  margin-top: 18px;
  padding-top: 8px;
  border-top: 1px solid var(--linea);
}

.oculto { display: none; }

.persona {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--linea);
}

.persona h3 { margin: 0; }

.persona button {
  width: auto;
  margin: 8px 8px 0 0;
  padding: 10px 14px;
}

@keyframes orbita {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@media (max-width: 800px) {
  .escenario,
  .pasos { grid-template-columns: 1fr; }
  .marca h1 { font-size: 1.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  .anillo { animation: none; }
}