/* ── Lost Moves — Landing / Waitlist ───────────────────────────────────────
   Hereda el sistema visual de la app: fondo tinta, tipografía papel, grano
   de fotocopia y el gesto de marca (la pegatina). El color cromático sigue
   reservado a la dificultad; todo lo demás vive en tinta y papel. Sobre esa
   base se añade cristal (glass) en la navegación, el formulario y las
   tarjetas — el efecto "liquid glass" pedido para esta pieza de marketing.
   ────────────────────────────────────────────────────────────────────── */

:root {
  --color-tinta: #0b0b0c;
  --color-asfalto: #16161a;
  --color-realce: #212127;
  --color-papel: #f2f0ea;
  --color-humo: #85858e;

  --color-facil: #57c98b;
  --color-medio: #f2b33d;
  --color-dificil: #ff5c4d;

  --font-display: "Archivo Black", "Archivo", system-ui, sans-serif;
  --font-sans: "Archivo", system-ui, -apple-system, sans-serif;

  --ease-suave: cubic-bezier(0.22, 1, 0.36, 1);
  --max-w: 72rem;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--color-tinta);
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-papel);
  font-synthesis-weight: none;
  text-rendering: optimizeLegibility;
  line-height: 1.5;
  overflow-x: hidden;
  position: relative;
}

/* Ambiente de fondo: el negro plano se rompe con la propia paleta de la
   marca (la de dificultad) muy diluida, en manchas grandes y fijas — luz de
   escenario, no decoración nueva. Se ve sobre todo detrás de las secciones
   sin fondo propio; el grano va encima, en su propia capa. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(46rem 34rem at 12% -8%, color-mix(in srgb, var(--color-dificil) 16%, transparent), transparent 62%),
    radial-gradient(40rem 32rem at 108% 12%, color-mix(in srgb, var(--color-medio) 12%, transparent), transparent 60%),
    radial-gradient(50rem 40rem at 45% 115%, color-mix(in srgb, var(--color-facil) 10%, transparent), transparent 65%);
}

/* Grano de fotocopia global, igual que en la app: textura, no interfaz. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  opacity: 0.07;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection {
  background: var(--color-papel);
  color: var(--color-tinta);
}

:focus-visible {
  outline: 2px solid var(--color-papel);
  outline-offset: 2px;
}

img {
  max-width: 100%;
  display: block;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--color-papel);
  color: var(--color-tinta);
  padding: 0.6rem 1rem;
  border-radius: 0.5rem;
  z-index: 200;
  transition: top 160ms var(--ease-suave);
  font-weight: 600;
}
.skip-link:focus {
  top: 1rem;
}

/* ── Tipografía (§15 apple-design: tracking por tamaño) ──────────────── */

.eyebrow {
  font-size: 0.6875rem;
  line-height: 1;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-humo);
  margin: 0 0 0.75rem;
}

.titular {
  font-family: var(--font-display);
  letter-spacing: -0.03em;
  line-height: 1.02;
  margin: 0;
}

.section__title {
  font-size: clamp(1.75rem, 1.35rem + 1.8vw, 2.75rem);
  margin-bottom: 1.25rem;
}

.section__lead {
  font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.25rem);
  color: color-mix(in srgb, var(--color-papel) 82%, transparent);
  max-width: 40rem;
}

p {
  color: color-mix(in srgb, var(--color-papel) 78%, transparent);
}

/* ── Cristal / liquid glass (§12 apple-design) ───────────────────────── */

.cristal {
  background: color-mix(in srgb, var(--color-tinta) 62%, transparent);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid color-mix(in srgb, var(--color-papel) 10%, transparent);
  border-top-color: color-mix(in srgb, var(--color-papel) 22%, transparent);
}

/* Borde de scroll degradado en vez de un 1px duro. */
.borde-scroll {
  position: relative;
}
.borde-scroll::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 100%;
  height: 1.5rem;
  pointer-events: none;
  background: linear-gradient(to bottom, color-mix(in srgb, var(--color-tinta) 40%, transparent), transparent);
}

/* Gesto de marca: relleno papel, anillo tinta, pegada un poco torcida. */
.pegatina {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  background: var(--color-papel);
  color: var(--color-tinta);
  border-radius: 999px;
  box-shadow:
    0 0 0 2px var(--color-tinta),
    0 3px 12px rgb(0 0 0 / 0.5);
  rotate: -2.5deg;
}

.prensa {
  transition: transform 120ms var(--ease-suave);
}
.prensa:active {
  transform: scale(0.975);
}

/* ── Layout base ──────────────────────────────────────────────────────── */

.section__inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: clamp(3.5rem, 3rem + 2.5vw, 6rem) 1.5rem;
}

.section__inner--narrow {
  max-width: 42rem;
}

/* Antes era un tinte casi imperceptible sobre el negro; ahora es un tono
   propio con un canto superior claro (luz atrapada en el borde, §12
   apple-design) para que de verdad se lea como una franja distinta. */
.section--alt {
  position: relative;
  z-index: 0;
  background: var(--color-asfalto);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--color-papel) 8%, transparent);
}

.section--alt::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    38rem 22rem at 85% 0%,
    color-mix(in srgb, var(--color-medio) 7%, transparent),
    transparent 70%
  );
}

/* ── Nav ──────────────────────────────────────────────────────────────── */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
}

/* El nav es sticky y se queda encima: sin este margen, saltar a #hero o al
   formulario dejaba su borde superior tapado justo debajo de la barra
   (el email quedaba oculto, parecía que el enlace no hacía nada). */
#hero,
#waitlist-hero {
  scroll-margin-top: 5.5rem;
}

.nav__inner {
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav__brand img {
  height: 2.75rem;
  width: 2.75rem;
  border-radius: 22.5%;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--color-papel) 14%, transparent);
}

.btn {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.9375rem;
  border: none;
  cursor: pointer;
  border-radius: 999px;
  padding: 0.7rem 1.25rem;
  white-space: nowrap;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn--pegatina {
  font-family: var(--font-display);
  background: var(--color-papel);
  color: var(--color-tinta);
  box-shadow: 0 0 0 2px var(--color-tinta), 0 3px 12px rgb(0 0 0 / 0.5);
  rotate: -1.5deg;
}

.btn--solid {
  background: var(--color-papel);
  color: var(--color-tinta);
  flex-shrink: 0;
}

.btn--solid:hover {
  background: color-mix(in srgb, var(--color-papel) 90%, var(--color-facil));
}

/* ── Hero ─────────────────────────────────────────────────────────────── */

.hero {
  position: relative;
  overflow: clip;
  padding-top: clamp(2rem, 1rem + 4vw, 4rem);
}

.hero__watermark {
  position: absolute;
  top: -4rem;
  right: -8rem;
  width: min(46rem, 70vw);
  opacity: 0.05;
  pointer-events: none;
  z-index: 0;
}

/* Áreas con nombre en vez de "order": en escritorio el texto y el
   formulario comparten la columna izquierda con el móvil a la derecha; en
   estrecho se apilan en el orden real que pide la lectura — texto, móvil,
   formulario — sin depender de trucos de "order" fáciles de desordenar. */
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin-inline: auto;
  padding: 2rem 1.5rem clamp(3rem, 2rem + 3vw, 5rem);
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  grid-template-areas:
    "intro shot"
    "cta   shot";
  column-gap: clamp(2rem, 1rem + 4vw, 4rem);
  row-gap: 1.75rem;
  align-items: center;
}

.hero__intro {
  grid-area: intro;
}

.hero__cta {
  grid-area: cta;
}

.hero__headline {
  font-size: clamp(1.875rem, 1.4rem + 2.3vw, 3rem);
}

.hero__headline-dim {
  display: block;
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: -0.005em;
  line-height: 1.35;
  font-size: clamp(1.0625rem, 0.95rem + 0.55vw, 1.375rem);
  color: color-mix(in srgb, var(--color-papel) 58%, transparent);
  margin-top: 0.85rem;
  margin-bottom: 0.5rem;
}

/* Insignia de cristal del hero: reemplaza el .eyebrow plano por un pill
   translúcido con indicador de estado, más acorde al resto del "cristal". */
.eyebrow-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1.5rem;
  padding: 0.4rem 0.9rem 0.4rem 0.7rem;
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: color-mix(in srgb, var(--color-papel) 85%, transparent);
  background: color-mix(in srgb, var(--color-tinta) 55%, transparent);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid color-mix(in srgb, var(--color-papel) 14%, transparent);
  border-top-color: color-mix(in srgb, var(--color-papel) 26%, transparent);
}

.eyebrow-badge__dot {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 999px;
  background: var(--color-facil);
  flex-shrink: 0;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-facil) 25%, transparent);
}

.hero__sub {
  font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.25rem);
  max-width: 34rem;
  margin: 1.25rem 0 2rem;
}

.microcopy {
  font-size: 0.8125rem;
  color: var(--color-humo);
  margin-top: 0.75rem;
}

.hero__shot {
  grid-area: shot;
  display: flex;
  justify-content: center;
}

/* ── Formulario waitlist ──────────────────────────────────────────────── */

.waitlist-form {
  border-radius: 1.25rem;
  padding: 0.85rem;
}


.waitlist-form__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.field {
  flex: 1 1 12rem;
}

.field__input {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  border: 1px solid color-mix(in srgb, var(--color-papel) 18%, transparent);
  background: color-mix(in srgb, var(--color-tinta) 55%, transparent);
  color: var(--color-papel);
}

.field__input::placeholder {
  color: var(--color-humo);
}

.field__input:focus-visible {
  outline: 2px solid var(--color-papel);
  outline-offset: 1px;
}

.waitlist-form .btn--solid {
  flex: 0 0 auto;
}

.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.waitlist-form__status {
  margin: 0.6rem 0.25rem 0;
  min-height: 1.1em;
  font-size: 0.875rem;
  font-weight: 600;
}
.waitlist-form__status[data-state="ok"] {
  color: var(--color-facil);
}
.waitlist-form__status[data-state="error"] {
  color: var(--color-dificil);
}

.waitlist-form--final {
  max-width: 34rem;
}

/* ── Device frame / screenshot placeholders ──────────────────────────── */

.device-frame {
  position: relative;
  width: min(19rem, 78vw);
  aspect-ratio: 9 / 19;
  padding: 0.6rem;
  border-radius: 2.5rem;
  background: var(--color-asfalto);
  border: 1px solid color-mix(in srgb, var(--color-papel) 12%, transparent);
  box-shadow: 0 40px 70px -30px rgb(0 0 0 / 0.7);
}

.device-frame__notch {
  position: absolute;
  top: 0.6rem;
  left: 50%;
  transform: translateX(-50%);
  width: 34%;
  height: 1.1rem;
  background: var(--color-tinta);
  border-radius: 0 0 0.9rem 0.9rem;
  z-index: 2;
}

.screenshot-slot {
  --ratio: 390 / 844;
  aspect-ratio: var(--ratio);
  height: 100%;
  width: 100%;
  border-radius: 0.85rem;
  border: 1.5px dashed color-mix(in srgb, var(--color-papel) 22%, transparent);
  background: color-mix(in srgb, var(--color-papel) 4%, transparent);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 1.25rem;
  text-align: center;
  color: color-mix(in srgb, var(--color-papel) 45%, transparent);
}

.device-frame .screenshot-slot {
  height: 100%;
  border-radius: 1.9rem;
}

.screenshot-slot svg {
  width: 1.75rem;
  height: 1.75rem;
  opacity: 0.7;
  flex-shrink: 0;
}

.screenshot-slot span {
  font-size: 0.6875rem;
  line-height: 1.3;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Recuadro ya relleno con una captura real: sin guion ni icono, la imagen
   ocupa todo el marco y solo conserva el redondeo. */
.screenshot-slot--filled {
  padding: 0;
  border-style: solid;
  border-color: color-mix(in srgb, var(--color-papel) 12%, transparent);
  background: var(--color-realce);
  overflow: hidden;
  position: relative;
}

.screenshot-slot--filled img,
.screenshot-slot--filled video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ── Section 1 — problem ──────────────────────────────────────────────── */

.section__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2rem, 1.5rem + 2vw, 3.5rem);
  align-items: start;
  margin-top: 1rem;
}

.section__text p {
  margin: 0 0 1rem;
}

.problem-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.problem-list li {
  display: flex;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  border-radius: 1rem;
  background: color-mix(in srgb, var(--color-papel) 4%, transparent);
  border-left: 2px solid color-mix(in srgb, var(--color-dificil) 55%, transparent);
  color: color-mix(in srgb, var(--color-papel) 88%, transparent);
  font-size: 0.9375rem;
}

.problem-list__mark {
  color: var(--color-dificil);
  font-weight: 700;
  flex-shrink: 0;
}

/* ── Section 2 — benefits ─────────────────────────────────────────────── */

.benefits {
  display: grid;
  gap: clamp(3rem, 2rem + 3vw, 5rem);
  margin-top: 2.5rem;
}

.benefit {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.7fr);
  gap: clamp(1.5rem, 1rem + 2vw, 3rem);
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--color-realce);
  border: 1px solid color-mix(in srgb, var(--color-papel) 7%, transparent);
  border-top-color: color-mix(in srgb, var(--color-papel) 14%, transparent);
  border-radius: 1.5rem;
  padding: clamp(1.75rem, 1.3rem + 2vw, 2.75rem);
}

.benefit--reverse .benefit__body {
  order: 2;
}
.benefit--reverse > .screenshot-slot {
  order: 1;
}

/* Numeral de fondo, contenido dentro de la tarjeta (overflow:hidden en
   .benefit evita que asome por encima o a los lados). */
.benefit__num {
  position: absolute;
  top: 0.5rem;
  left: 1.5rem;
  font-family: var(--font-display);
  font-size: 4rem;
  line-height: 1;
  color: color-mix(in srgb, var(--color-papel) 10%, transparent);
  z-index: 0;
  pointer-events: none;
}

.benefit__body {
  position: relative;
  z-index: 1;
}

.benefit__title {
  font-family: var(--font-display);
  letter-spacing: -0.015em;
  font-size: clamp(1.25rem, 1.1rem + 0.6vw, 1.625rem);
  margin: 0 0 0.5rem;
}

.benefit > .screenshot-slot {
  max-width: 11rem;
  margin-inline: auto;
  width: 100%;
}

/* La miniatura de "The sound, tagged" es la tarjeta completa (vídeo +
   nombre), no solo el cuadro de vídeo: se ve mejor un poco más ancha que
   el resto de capturas del bloque. */
.screenshot-slot--wide {
  max-width: 14rem;
}

.difficulty-demo {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

.difficulty-dot {
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 999px;
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-tinta) 100%, transparent);
}
.difficulty-dot--easy {
  background: var(--color-facil);
}
.difficulty-dot--medium {
  background: var(--color-medio);
}
.difficulty-dot--hard {
  background: var(--color-dificil);
}

.sound-demo {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.1rem;
}

.sound-chip {
  font-size: 0.75rem;
  padding: 0.45rem 0.85rem;
}

.sound-chip--muted {
  background: color-mix(in srgb, var(--color-papel) 55%, var(--color-tinta));
}

.combo-demo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.1rem;
  color: color-mix(in srgb, var(--color-papel) 55%, transparent);
}

.combo-demo__node {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  border: 1.5px solid color-mix(in srgb, var(--color-papel) 30%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 0.875rem;
  flex-shrink: 0;
}

.combo-demo__link {
  width: 3rem;
  height: 0.75rem;
  flex-shrink: 0;
}

/* ── Section 3 — steps ────────────────────────────────────────────────── */

.steps {
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.5rem, 1rem + 2vw, 2.5rem);
  counter-reset: step;
}

.step {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.step__num {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--color-humo);
  letter-spacing: 0.05em;
}

.step .screenshot-slot {
  max-width: 12rem;
}

.step__title {
  font-family: var(--font-display);
  letter-spacing: -0.01em;
  font-size: 1.1875rem;
  margin: 0;
}

.step p {
  margin: 0;
  font-size: 0.9375rem;
}

/* ── FAQ ──────────────────────────────────────────────────────────────── */

.faq-list {
  display: grid;
  gap: 0.85rem;
  margin-top: 2rem;
}

.faq-item {
  border-radius: 1rem;
  padding: 1.1rem 1.25rem;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-papel);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-humo);
  flex-shrink: 0;
  transition: transform 200ms var(--ease-suave);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  margin: 0.9rem 0 0;
  font-size: 0.9375rem;
}

/* ── Final CTA ────────────────────────────────────────────────────────── */

.final-cta {
  position: relative;
  overflow: clip;
  text-align: center;
}

.final-cta__watermark {
  position: absolute;
  bottom: -6rem;
  left: 50%;
  transform: translateX(-50%);
  width: min(40rem, 90vw);
  opacity: 0.04;
  pointer-events: none;
}

.final-cta .section__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.final-cta .section__lead {
  margin-inline: auto;
}

.final-cta .waitlist-form {
  margin-top: 2rem;
  width: 100%;
}

/* ── Footer ───────────────────────────────────────────────────────────── */

.footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 3rem 1.5rem 4rem;
  text-align: center;
}

.footer__mark {
  height: 2rem;
  width: auto;
  opacity: 0.5;
}

.footer p {
  font-size: 0.8125rem;
  color: var(--color-humo);
  margin: 0;
}

/* ── Reveal on scroll ─────────────────────────────────────────────────── */

[data-reveal] {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity 600ms var(--ease-suave), transform 600ms var(--ease-suave);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* Pequeño escalonado para que el hero no aparezca todo de golpe: texto,
   luego el móvil, luego el formulario — igual que se leería. */
.reveal-delay-1.is-visible {
  transition-delay: 90ms;
}
.reveal-delay-2.is-visible {
  transition-delay: 180ms;
}

/* ── Responsive ───────────────────────────────────────────────────────── */

@media (max-width: 860px) {
  .hero__inner {
    grid-template-columns: 1fr;
    grid-template-areas:
      "intro"
      "shot"
      "cta";
  }
  .section__grid {
    grid-template-columns: 1fr;
  }
  .benefit,
  .benefit--reverse {
    grid-template-columns: 1fr;
  }
  .benefit__body,
  .benefit--reverse .benefit__body {
    order: 2;
  }
  .benefit > .screenshot-slot,
  .benefit--reverse > .screenshot-slot {
    order: 1;
    max-width: 13rem;
  }
  .steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .waitlist-form__row {
    flex-direction: column;
  }
  .field {
    /* En fila, 12rem era el ancho mínimo del campo (flex-basis). En
       columna esa misma base pasa a leerse como alto: sin resetearla,
       cada campo quedaba con ~12rem de alto vacío. */
    flex: 1 1 auto;
  }
  .waitlist-form .btn--solid {
    width: 100%;
  }
  .nav__brand img {
    height: 2.25rem;
    width: 2.25rem;
  }
}

/* ── Interacción al pasar el cursor ───────────────────────────────────── *
 * Solo para punteros finos con hover real (nunca al tocar en móvil, para *
 * no dejar un estado "pulsado" pegado tras un tap) y solo si el usuario  *
 * no ha pedido menos movimiento.                                        */
@media (hover: hover) and (pointer: fine) and (prefers-reduced-motion: no-preference) {
  .btn {
    transition: transform 220ms var(--ease-suave), filter 220ms var(--ease-suave);
  }
  .btn:hover {
    transform: translateY(-2px) scale(1.03);
    filter: brightness(1.06);
  }

  .nav__brand img {
    transition: transform 220ms var(--ease-suave);
  }
  .nav__brand:hover img {
    transform: scale(1.08) rotate(-4deg);
  }

  .benefit {
    transition: transform 280ms var(--ease-suave), border-color 280ms var(--ease-suave),
      box-shadow 280ms var(--ease-suave);
  }
  .benefit:hover {
    transform: translateY(-5px);
    border-color: color-mix(in srgb, var(--color-papel) 18%, transparent);
    box-shadow: 0 24px 44px -28px rgb(0 0 0 / 0.65);
  }

  .step {
    transition: transform 280ms var(--ease-suave);
  }
  .step:hover {
    transform: translateY(-4px);
  }

  .screenshot-slot--filled img,
  .screenshot-slot--filled video {
    transition: transform 500ms var(--ease-suave);
  }
  .benefit:hover .screenshot-slot--filled img,
  .benefit:hover .screenshot-slot--filled video,
  .step:hover .screenshot-slot--filled img {
    transform: scale(1.045);
  }

  .faq-item {
    transition: border-color 220ms var(--ease-suave), background-color 220ms var(--ease-suave);
  }
  .faq-item:hover {
    border-color: color-mix(in srgb, var(--color-papel) 22%, transparent);
  }

  .pegatina {
    transition: rotate 220ms var(--ease-suave), scale 220ms var(--ease-suave);
  }
  .sound-demo .pegatina:hover {
    rotate: 0deg;
    scale: 1.05;
  }
}

/* ── Accesibilidad / preferencias (§14 apple-design) ─────────────────── */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .prensa {
    transition: none;
  }
  .pegatina,
  .btn--pegatina {
    rotate: none;
  }
  [data-reveal] {
    transition: opacity 200ms ease;
    transform: none;
  }
  .faq-item summary::after {
    transition: none;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .cristal {
    background: var(--color-tinta);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

@media (prefers-contrast: more) {
  .cristal {
    background: var(--color-tinta);
    border: 1px solid var(--color-papel);
  }
  body::after {
    display: none;
  }
  p,
  .section__lead {
    color: var(--color-papel);
  }
}