/* ============================================================
   GRIETAS DEL MULTIVERSO — hoja de estilo única
   Paleta tomada de la cubierta: índigo profundo, cian de señal.
   ============================================================ */

:root {
  --noche:      #06041a;
  --indigo:     #130c3a;
  --indigo-alt: #1d1352;
  --senal:      #6fe3ff;
  --senal-tenue:#2b7f99;
  --hueso:      #eef1ff;
  --humo:       rgba(238, 241, 255, 0.58);
  --linea:      rgba(111, 227, 255, 0.18);

  /* el JS reescribe estas dos al activar un universo */
  --universo:      #6fe3ff;
  --universo-hondo:#130c3a;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

/* el atributo hidden debe ganar a cualquier display de clase */
[hidden] { display: none !important; }

/* ninguna imagen se deforma al limitar su ancho */
img { max-width: 100%; height: auto; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--noche);
  color: var(--hueso);
  font-family: var(--sans);
  overflow-x: hidden;
}

body { min-height: 100vh; }

a { color: inherit; text-decoration: none; }

/* ── Lienzo de fondo ───────────────────────────────────────── */
#cielo {
  position: fixed;
  inset: 0;
  z-index: 0;
  display: block;
}

#velo {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(
    circle at var(--mx, 50%) var(--my, 45%),
    color-mix(in srgb, var(--universo) 16%, transparent) 0%,
    transparent 55%
  );
  transition: background 700ms ease;
}

/* ── Estructura ────────────────────────────────────────────── */
.capa { position: relative; z-index: 2; }

header.barra {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.15rem clamp(1rem, 4vw, 3rem);
  backdrop-filter: blur(9px);
  background: linear-gradient(to bottom, rgba(6, 4, 26, 0.82), transparent);
}

.marca {
  font-size: 0.72rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--humo);
  white-space: nowrap;
}

nav.menu {
  display: flex;
  gap: clamp(0.9rem, 2.4vw, 2.2rem);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

nav.menu a {
  color: var(--humo);
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: color 240ms, border-color 240ms;
}

nav.menu a:hover,
nav.menu a[aria-current="page"] {
  color: var(--senal);
  border-bottom-color: var(--senal);
}

/* ── Portada ───────────────────────────────────────────────── */
.portada {
  min-height: 100svh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 7rem 1.5rem 4rem;
}

.portada .lema {
  font-size: clamp(0.72rem, 1.5vw, 0.9rem);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--senal);
  margin-bottom: 1.6rem;
  opacity: 0;
  animation: emerger 1.2s 200ms forwards;
}

.portada h1 {
  margin: 0;
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(2.6rem, 11vw, 9rem);
  line-height: 0.88;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  opacity: 0;
  animation: emerger 1.4s 420ms forwards;
}

.portada h1 span { display: block; }

.portada .firma {
  margin-top: 1.8rem;
  font-size: clamp(0.75rem, 1.7vw, 1rem);
  letter-spacing: 0.44em;
  text-transform: uppercase;
  color: var(--humo);
  opacity: 0;
  animation: emerger 1.4s 760ms forwards;
}

.portada .pie {
  margin-top: 3.2rem;
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--humo);
  text-transform: uppercase;
  opacity: 0;
  animation: emerger 1.4s 1000ms forwards;
}

.flecha {
  margin-top: 2.4rem;
  width: 1px;
  height: 46px;
  background: linear-gradient(to bottom, transparent, var(--senal));
  animation: respirar 2.6s ease-in-out infinite;
}

@keyframes emerger {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}

@keyframes respirar {
  0%, 100% { opacity: 0.25; }
  50%      { opacity: 1; }
}

/* ── Constelación ──────────────────────────────────────────── */
.archivo {
  min-height: 100svh;
  padding: clamp(3rem, 8vh, 6rem) clamp(1rem, 4vw, 3rem) 5rem;
}

.rotulo {
  text-align: center;
  margin-bottom: clamp(1.5rem, 4vh, 3rem);
}

.rotulo .numero {
  font-size: 0.68rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--senal);
}

.rotulo h2 {
  margin: 0.7rem 0 0.6rem;
  font-size: clamp(1.5rem, 4vw, 2.6rem);
  font-weight: 300;
  letter-spacing: 0.04em;
}

.rotulo p {
  margin: 0 auto;
  max-width: 52ch;
  color: var(--humo);
  font-size: 0.95rem;
  line-height: 1.7;
}

.constelacion {
  position: relative;
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  min-height: 420px;
}

.constelacion svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.enlace {
  stroke: var(--linea);
  stroke-width: 1;
  transition: stroke 400ms, stroke-width 400ms;
}

.enlace.vivo {
  stroke: var(--universo);
  stroke-width: 1.6;
}

.nodo {
  position: absolute;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  display: grid;
  place-items: center;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  color: inherit;
}

.nodo .punto {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--senal);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--senal) 50%, transparent);
  transition: transform 320ms cubic-bezier(.2,.8,.2,1),
              background 320ms, box-shadow 420ms;
}

.nodo .halo {
  position: absolute;
  width: 46px;
  height: 46px;
  border: 1px solid var(--linea);
  border-radius: 50%;
  transform: scale(0.6);
  opacity: 0;
  transition: transform 460ms cubic-bezier(.2,.8,.2,1), opacity 460ms, border-color 460ms;
}

.nodo .cifra {
  position: absolute;
  top: -4px;
  font-size: 0.56rem;
  letter-spacing: 0.16em;
  color: var(--humo);
  opacity: 0;
  transition: opacity 360ms;
}

.nodo:hover .punto,
.nodo.activo .punto,
.nodo:focus-visible .punto {
  transform: scale(1.7);
  background: #fff;
  box-shadow: 0 0 22px 5px color-mix(in srgb, var(--universo) 65%, transparent);
}

.nodo:hover .halo,
.nodo.activo .halo,
.nodo:focus-visible .halo {
  transform: scale(1);
  opacity: 1;
  border-color: var(--universo);
}

.nodo:hover .cifra,
.nodo.activo .cifra,
.nodo:focus-visible .cifra { opacity: 1; }

/* ── Panel de señal ────────────────────────────────────────── */
.senal {
  position: absolute;
  left: 50%;
  bottom: -2.2rem;
  transform: translateX(-50%);
  width: min(620px, 92%);
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 420ms;
}

.senal.visible { opacity: 1; }

.senal .meta {
  font-size: 0.64rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--universo);
  margin-bottom: 0.7rem;
}

.senal .autor {
  font-size: clamp(1.1rem, 2.6vw, 1.7rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 0.35rem;
}

.senal .relato {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--humo);
  margin-bottom: 0.9rem;
}

.senal .cita {
  font-family: var(--serif);
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  line-height: 1.65;
  color: var(--hueso);
  max-width: 46ch;
  margin: 0 auto;
}

.reposo {
  text-align: center;
  color: var(--humo);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: opacity 420ms;
}

.reposo.oculto { opacity: 0; }

/* ── Bloques de texto ──────────────────────────────────────── */
.seccion {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(4rem, 12vh, 8rem) clamp(1.2rem, 4vw, 2rem);
}

.seccion h2 {
  font-size: clamp(1.4rem, 3.4vw, 2.2rem);
  font-weight: 300;
  letter-spacing: 0.04em;
  margin: 0 0 1.4rem;
}

.seccion p {
  color: var(--humo);
  line-height: 1.85;
  font-size: 1rem;
  margin: 0 0 1.1rem;
}

.seccion .destacado {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 2.6vw, 1.45rem);
  font-style: italic;
  color: var(--hueso);
  line-height: 1.6;
  border-left: 1px solid var(--senal);
  padding-left: 1.4rem;
  margin: 2.4rem 0;
}

/* ── Pie ───────────────────────────────────────────────────── */
footer {
  border-top: 1px solid rgba(111, 227, 255, 0.12);
  padding: 3rem clamp(1.2rem, 4vw, 3rem);
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--humo);
}

footer a:hover { color: var(--senal); }

/* ── Página del chatbot ────────────────────────────────────── */
.ia {
  min-height: 100svh;
  display: grid;
  grid-template-rows: auto 1fr;
  padding: 7rem clamp(1rem, 4vw, 3rem) clamp(2rem, 6vh, 4rem);
  gap: 2rem;
}

.ia .intro { text-align: center; max-width: 620px; margin: 0 auto; }

.ia .intro h1 {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 300;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 1rem;
}

.ia .intro p {
  color: var(--humo);
  line-height: 1.8;
  font-size: 0.95rem;
  margin: 0 0 0.6rem;
}

.marco {
  width: min(880px, 100%);
  margin: 0 auto;
  height: clamp(700px, 70vh, 820px);
  min-height: 700px;
  border: 1px solid rgba(111, 227, 255, 0.22);
  border-radius: 14px;
  overflow: hidden;
  background: rgba(19, 12, 58, 0.55);
  box-shadow: 0 0 60px rgba(111, 227, 255, 0.08);
  position: relative;
}

.marco iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.aviso {
  text-align: center;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--humo);
  margin-top: 1.2rem;
}

/* ── Adaptación a pantallas pequeñas ───────────────────────── */
@media (max-width: 760px) {
  header.barra { flex-direction: column; align-items: flex-start; gap: 0.7rem; }
  nav.menu { flex-wrap: wrap; gap: 0.9rem; }
  .constelacion { aspect-ratio: 3 / 4; min-height: 520px; }
  .senal { position: static; transform: none; margin: 2.5rem auto 0; opacity: 1; }
  .nodo { width: 48px; height: 48px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   EL ARCHIVO CERRADO — puertas, ficha de autor y lupa
   ============================================================ */

.cierre {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  border: 1px solid rgba(111, 227, 255, 0.2);
  border-radius: 16px;
  padding: clamp(2rem, 6vw, 3.4rem) clamp(1.2rem, 5vw, 2.6rem);
  background: rgba(10, 6, 34, 0.55);
  backdrop-filter: blur(6px);
}

.cierre .candado {
  width: 34px;
  height: 34px;
  margin: 0 auto 1.4rem;
  border: 1px solid var(--senal);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--senal);
  font-size: 0.85rem;
  animation: respirar 3.4s ease-in-out infinite;
}

.cierre h3 {
  margin: 0 0 0.8rem;
  font-size: clamp(1.15rem, 3vw, 1.6rem);
  font-weight: 300;
  letter-spacing: 0.06em;
}

.cierre p {
  color: var(--humo);
  font-size: 0.92rem;
  line-height: 1.75;
  margin: 0 0 1.8rem;
}

.llave {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
  flex-wrap: wrap;
}

.llave input {
  flex: 1 1 220px;
  max-width: 280px;
  background: rgba(6, 4, 26, 0.7);
  border: 1px solid rgba(111, 227, 255, 0.28);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  color: var(--hueso);
  font-family: var(--sans);
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  text-align: center;
}

.llave input:focus {
  outline: none;
  border-color: var(--senal);
  box-shadow: 0 0 0 3px rgba(111, 227, 255, 0.12);
}

.llave button {
  background: var(--senal);
  color: #04121a;
  border: 0;
  border-radius: 8px;
  padding: 0.85rem 1.6rem;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 200ms, filter 200ms;
}

.llave button:hover { transform: translateY(-1px); filter: brightness(1.12); }

.error {
  margin: 1rem 0 0;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #ff8aa6;
}

/* ── Ficha de autor (solo con el archivo abierto) ─────────── */
.constelacion.revelado .nodo::after {
  content: "";
  position: absolute;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--universo) 40%, transparent), transparent 70%);
  filter: blur(9px);
  opacity: 0;
  transition: opacity 420ms;
  pointer-events: none;
}

.constelacion.revelado .nodo:hover::after,
.constelacion.revelado .nodo.activo::after { opacity: 1; }

.ficha {
  position: fixed;
  right: clamp(1rem, 3vw, 2.4rem);
  bottom: clamp(1rem, 3vw, 2.4rem);
  z-index: 30;
  width: min(380px, calc(100vw - 2rem));
  border: 1px solid rgba(111, 227, 255, 0.24);
  border-radius: 14px;
  background: rgba(10, 6, 34, 0.9);
  backdrop-filter: blur(12px);
  padding: 1.3rem;
  opacity: 0;
  transform: translateY(14px);
  pointer-events: none;
  transition: opacity 380ms, transform 380ms, border-color 380ms;
}

.ficha.visible { opacity: 1; transform: none; }
.ficha.fijada {
  pointer-events: auto;
  border-color: var(--universo);
  box-shadow: 0 0 40px color-mix(in srgb, var(--universo) 22%, transparent);
}

.ficha-foto {
  width: clamp(104px, 11vw, 132px);
  height: clamp(104px, 11vw, 132px);
  border-radius: 50%;
  background: linear-gradient(140deg, var(--indigo-alt), var(--noche));
  background-size: cover;
  background-position: center;
  border: 1px solid rgba(111, 227, 255, 0.3);
  display: grid;
  place-items: center;
  margin: 0 auto 1rem;
  filter: blur(6px) saturate(0.65);
  transition: filter 500ms;
}

.ficha.fijada .ficha-foto { filter: none; }

.ficha-inicial {
  font-size: 1.6rem;
  letter-spacing: 0.1em;
  color: var(--humo);
}

.ficha.fijada .ficha-inicial { opacity: 0; }

.ficha-autor { margin: 0 0 0.25rem; font-size: 1.02rem; font-weight: 600; }

.ficha-meta {
  margin: 0 0 0.9rem;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--universo);
}

.ficha-bio {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--humo);
  max-height: 0;
  overflow: hidden;
  transition: max-height 520ms ease;
}

.ficha.fijada .ficha-bio { max-height: 340px; }

.ficha-pista {
  margin: 0.6rem 0 0;
  font-size: 0.64rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(238, 241, 255, 0.4);
}

.ficha.fijada .ficha-pista { display: none; }

.ficha-cerrar {
  position: absolute;
  top: 0.7rem;
  right: 0.8rem;
  background: none;
  border: 0;
  color: var(--humo);
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 300ms;
}

.ficha.fijada .ficha-cerrar { opacity: 1; }

/* ── El objeto y su lupa ──────────────────────────────────── */
.objeto { text-align: center; }

.mockup {
  display: block;
  max-width: min(620px, 100%);
  height: auto;
  margin: 0 auto;
  border-radius: 6px;
  filter: drop-shadow(0 22px 50px rgba(0, 0, 0, 0.55));
  transition: transform 700ms cubic-bezier(.2,.8,.2,1),
              filter 700ms ease;
}

.mockup:hover {
  transform: translateY(-10px);
  filter: drop-shadow(0 34px 70px rgba(0, 0, 0, 0.6))
          drop-shadow(0 0 30px color-mix(in srgb, var(--senal) 28%, transparent));
}





@media (max-width: 760px) {
  .ficha { position: static; width: 100%; margin-top: 2rem; opacity: 1; transform: none; }
}

/* ============================================================
   SELLOS DE PIE — Colección Ragnarok y valknut de Valhalla
   ============================================================ */

.sellos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(2.2rem, 7vw, 4.5rem);
  padding: clamp(3rem, 9vh, 5rem) 1.5rem clamp(1.5rem, 4vh, 2.5rem);
  border-top: 1px solid rgba(111, 227, 255, 0.1);
  flex-wrap: wrap;
}

.sello {
  display: block;
  opacity: 0.55;
  transition: opacity 420ms, filter 420ms, transform 420ms;
}

.sello:hover { opacity: 1; transform: translateY(-3px); }

/* El logo llega en negro sobre blanco: lo invertimos y quitamos
   el fondo con 'screen', que hace transparente todo lo negro.
   Si un día lo guardas en PNG con transparencia, quita el filter. */
.sello-ragnarok {
  height: clamp(42px, 6vw, 62px);
  width: auto;
  filter: invert(1);
  mix-blend-mode: screen;
}

.sello-valknut {
  height: clamp(46px, 6.5vw, 68px);
  width: auto;
  color: var(--hueso);
}

.sello-valknut:hover { color: var(--senal); }

.sellos .separador {
  width: 1px;
  height: 46px;
  background: linear-gradient(to bottom, transparent, var(--linea), transparent);
}

@media (max-width: 520px) {
  .sellos .separador { display: none; }
}

/* el sello de Valhalla es más pequeño en origen: lo igualamos ópticamente */
.sello-valhalla { height: clamp(38px, 5vw, 54px); }

/* con el retrato grande, el texto de la ficha va centrado */
.ficha-autor, .ficha-meta, .ficha-bio, .ficha-pista { text-align: center; }
.ficha-bio { text-align: left; }

.ficha-redes {
  margin: 0.8rem 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--universo);
  text-align: center;
  max-height: 0;
  overflow: hidden;
  transition: max-height 520ms ease;
}

.ficha.fijada .ficha-redes { max-height: 40px; }

/* ============================================================
   LOS ONCE SÍMBOLOS — elementos flotantes
   Vienen del PDF en negro: se invierten a blanco y se atenúan.
   ============================================================ */

.simbolos {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.simbolo {
  position: absolute;
  width: clamp(40px, 5.5vw, 78px);
  height: auto;
  filter: invert(1);
  opacity: calc(0.085 * var(--fondo, 1));
  transform: translate(var(--dx, 0), var(--dy, 0))
             rotate(var(--giro, 0deg)) scale(var(--escala, 1));
  animation: derivar var(--ciclo, 32s) var(--demora, 0s) ease-in-out infinite;
  transition: opacity 700ms ease, filter 700ms ease;
  will-change: transform;
}

@keyframes derivar {
  0%, 100% { margin-top: 0; margin-left: 0; }
  25%      { margin-top: -26px; margin-left: 14px; }
  50%      { margin-top: -8px;  margin-left: -18px; }
  75%      { margin-top: 20px;  margin-left: 10px; }
}

/* el símbolo del universo activo sale a primer plano */
.simbolo.encendido {
  opacity: 0.52;
  filter: invert(1)
          drop-shadow(0 0 16px color-mix(in srgb, var(--universo) 75%, transparent));
}

/* el mismo símbolo, marcando su nodo en la constelación */
.nodo-simbolo {
  position: absolute;
  width: 26px;
  height: auto;
  filter: invert(1);
  opacity: 0;
  transform: scale(0.5);
  transition: opacity 420ms, transform 460ms cubic-bezier(.2,.8,.2,1);
  pointer-events: none;
}

.nodo:hover .nodo-simbolo,
.nodo.activo .nodo-simbolo,
.nodo:focus-visible .nodo-simbolo {
  opacity: 0.9;
  transform: scale(1) translateY(-30px);
}

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

/* ── Ficha de autor: retrato y texto más grandes ──────────── */
.ficha { width: min(440px, calc(100vw - 2rem)); padding: 1.6rem 1.5rem; }
.ficha-foto { width: clamp(140px, 15vw, 180px); height: clamp(140px, 15vw, 180px); }
.ficha-autor { font-size: clamp(1.15rem, 2.4vw, 1.4rem); }
.ficha-meta { font-size: 0.78rem; }
.ficha-bio { font-size: 0.95rem; line-height: 1.75; }
.ficha.fijada .ficha-bio { max-height: 460px; overflow-y: auto; }
.ficha-redes { font-size: 0.8rem; }

/* ============================================================
   ALTA EN LA SEÑAL — captación de correo
   ============================================================ */

.senal-alta {
  padding: clamp(4rem, 12vh, 7rem) clamp(1.2rem, 4vw, 3rem);
  display: grid;
  place-items: center;
}

.alta-caja {
  width: min(620px, 100%);
  text-align: center;
  border: 1px solid rgba(111, 227, 255, 0.18);
  border-radius: 18px;
  padding: clamp(2rem, 6vw, 3.2rem) clamp(1.3rem, 5vw, 2.8rem);
  background: rgba(10, 6, 34, 0.5);
  backdrop-filter: blur(8px);
}

.alta-caja h2 {
  margin: 0.7rem 0 0.9rem;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 300;
  letter-spacing: 0.03em;
}

.alta-texto {
  margin: 0 auto 2rem;
  max-width: 44ch;
  color: var(--humo);
  font-size: 0.95rem;
  line-height: 1.75;
}

.alta-campos {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.1rem;
}

.alta-campos input {
  flex: 1 1 260px;
  max-width: 330px;
  background: rgba(6, 4, 26, 0.7);
  border: 1px solid rgba(111, 227, 255, 0.28);
  border-radius: 8px;
  padding: 0.9rem 1.1rem;
  color: var(--hueso);
  font-family: var(--sans);
  font-size: 0.95rem;
}

.alta-campos input:focus {
  outline: none;
  border-color: var(--senal);
  box-shadow: 0 0 0 3px rgba(111, 227, 255, 0.12);
}

.alta-campos button {
  background: var(--senal);
  color: #04121a;
  border: 0;
  border-radius: 8px;
  padding: 0.9rem 1.7rem;
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 200ms, filter 200ms;
}

.alta-campos button:hover:not(:disabled) { transform: translateY(-1px); filter: brightness(1.12); }
.alta-campos button:disabled { opacity: 0.6; cursor: default; }

.alta-consent {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  text-align: left;
  max-width: 46ch;
  margin: 0 auto;
  font-size: 0.74rem;
  line-height: 1.6;
  color: rgba(238, 241, 255, 0.45);
}

.alta-consent input { margin-top: 0.15rem; accent-color: var(--senal); }

.alta-aviso {
  margin: 1.2rem 0 0;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--senal);
}

.alta-aviso.mal { color: #ff8aa6; }

/* ============================================================
   LA TRANSMISIÓN — interruptor del sonido ambiente
   ============================================================ */

.sonido {
  position: fixed;
  left: clamp(1rem, 3vw, 2.2rem);
  bottom: clamp(1rem, 3vw, 2.2rem);
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1rem 0.6rem 0.8rem;
  border: 1px solid rgba(111, 227, 255, 0.22);
  border-radius: 999px;
  background: rgba(10, 6, 34, 0.72);
  backdrop-filter: blur(9px);
  color: var(--humo);
  font-family: var(--sans);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 320ms, color 320ms, opacity 320ms;
  opacity: 0.6;
}

.sonido:hover { opacity: 1; border-color: var(--senal); color: var(--hueso); }
.sonido.activo { opacity: 1; color: var(--hueso); border-color: var(--universo); }

.ondas {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 13px;
}

.ondas i {
  width: 2px;
  height: 3px;
  background: currentColor;
  border-radius: 1px;
  transition: height 300ms;
}

.sonido.activo .ondas i { animation: latir 1.25s ease-in-out infinite; }
.sonido.activo .ondas i:nth-child(1) { animation-delay: 0s;    }
.sonido.activo .ondas i:nth-child(2) { animation-delay: 0.18s; }
.sonido.activo .ondas i:nth-child(3) { animation-delay: 0.36s; }
.sonido.activo .ondas i:nth-child(4) { animation-delay: 0.54s; }

@keyframes latir {
  0%, 100% { height: 3px; }
  50%      { height: 13px; }
}

.sonido.esperando { animation: respirar 2.2s ease-in-out infinite; }

@media (max-width: 560px) {
  .sonido-texto { display: none; }
  .sonido { padding: 0.65rem; }
}

@media (prefers-reduced-motion: reduce) {
  .sonido.activo .ondas i, .sonido.esperando { animation: none; }
}

/* ── Hero con el logotipo del título ──────────────────────── */
.portada h1.titulo {
  margin: 0;
  line-height: 0;
  opacity: 0;
  animation: emerger 1.6s 420ms forwards;
}

.portada h1.titulo img {
  display: block;
  width: min(880px, 92vw);
  max-width: 92vw;
  height: auto;
  margin: 0 auto;
  filter: drop-shadow(0 0 42px rgba(111, 227, 255, 0.22));
  animation: palpitar 7s ease-in-out infinite;
}

@keyframes palpitar {
  0%, 100% { filter: drop-shadow(0 0 34px rgba(111, 227, 255, 0.18)); }
  50%      { filter: drop-shadow(0 0 58px rgba(111, 227, 255, 0.34)); }
}

/* el lema y el pie se reequilibran sin la firma de texto */
.portada .lema { margin-bottom: 2.2rem; }
.portada .pie { margin-top: 2.4rem; }

@media (prefers-reduced-motion: reduce) {
  .portada h1.titulo img { animation: none; }
}