/* /unirse. Solo se carga en esa página. Colores desde los --page-* de
   styles.css o tokens de tokens.css (Color.kt); forma igual que la portada:
   tarjetas a 24px, capturas a 16px, lo que se toca en pill. */

:root {
  --un-max: 1120px;
  --un-gutter: clamp(16px, 4.5vw, 64px);
  --un-section: clamp(64px, 9vw, 120px);
  --un-on-primary: var(--on-primary);
}

@media (prefers-color-scheme: dark) {
  :root {
    --un-on-primary: var(--on-primary-dark);
  }
}

:where(.join) p,
:where(.join) ol,
:where(.join) dl,
:where(.join) dd {
  margin: 0;
}

:where(.join) ol {
  list-style: none;
  padding: 0;
}

:where(.join) li {
  margin: 0;
}

.un-wrap {
  margin-inline: auto;
  max-width: calc(var(--un-max) + 2 * var(--un-gutter));
  padding-inline: var(--un-gutter);
  width: 100%;
}

.un-num {
  align-items: center;
  background: var(--page-primary);
  border-radius: 50%;
  color: var(--un-on-primary);
  display: inline-flex;
  flex: none;
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  font-size: 0.55em;
  font-weight: 800;
  height: 1.6em;
  justify-content: center;
  letter-spacing: 0;
  width: 1.6em;
}

/* Entrada ------------------------------------------------------------------ */

.un-intro {
  background: var(--page-hero-bg);
  color: var(--page-on-deep);
  padding-block: clamp(48px, 7vw, 96px);
  position: relative;
}

.un-intro::after {
  background: url("/images/grain.svg") 0 0 / 220px 220px;
  content: "";
  inset: 0;
  mix-blend-mode: soft-light;
  opacity: 0.5;
  pointer-events: none;
  position: absolute;
}

.un-intro__grid {
  display: grid;
  gap: 36px;
  position: relative;
  z-index: 1;
}

.un-intro__copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.un-eyebrow {
  color: var(--page-on-deep-muted);
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.4;
  text-transform: uppercase;
}

.un-intro__title {
  font-size: clamp(2.2rem, 1.3rem + 3.4vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.04;
  max-width: 14ch;
}

.un-intro__lead {
  color: var(--page-on-deep-muted);
  font-size: clamp(1.05rem, 0.95rem + 0.4vw, 1.25rem);
  line-height: 1.55;
  max-width: 36ch;
}

.un-summary {
  background: color-mix(in srgb, var(--page-on-deep) 7%, transparent);
  border: 1px solid color-mix(in srgb, var(--page-on-deep) 16%, transparent);
  border-radius: 24px;
  padding: 8px clamp(18px, 2.4vw, 28px) 22px;
}

.un-summary li + li {
  border-top: 1px solid color-mix(in srgb, var(--page-on-deep) 14%, transparent);
}

.un-summary a {
  align-items: center;
  color: var(--page-on-deep);
  display: flex;
  font-size: 16.5px;
  font-weight: 600;
  gap: 14px;
  line-height: 1.4;
  padding: 18px 0;
  text-decoration: none;
}

.un-summary a:hover {
  color: var(--mint-bright);
}

.un-summary .un-num {
  background: var(--mint-bright);
  color: var(--art-ink);
  font-size: 14px;
  height: 30px;
  width: 30px;
}

.un-summary__foot {
  color: var(--page-on-deep-muted);
  font-size: 14px;
  line-height: 1.5;
  margin-top: 6px;
}

/* Paso 1: el grupo ----------------------------------------------------------- */

.un-step {
  background: var(--page-bg);
  padding-block: var(--un-section);
  scroll-margin-top: 24px;
}

.un-step__grid {
  display: grid;
  gap: 28px;
}

.un-step__title {
  align-items: center;
  color: var(--page-fg);
  display: flex;
  font-size: clamp(1.75rem, 1.1rem + 2.2vw, 2.7rem);
  font-weight: 800;
  gap: 14px;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.un-step__lead {
  color: var(--page-muted);
  font-size: clamp(1rem, 0.94rem + 0.3vw, 1.15rem);
  line-height: 1.55;
  margin-top: 16px;
  max-width: 46ch;
}

.un-action {
  background: var(--page-surface);
  border: 1px solid var(--page-outline-variant);
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(22px, 2.6vw, 30px);
}

.un-action__title {
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  font-size: 18px;
  font-weight: 700;
}

.un-btn {
  background: var(--page-primary);
  border-radius: 999px;
  color: var(--un-on-primary);
  display: block;
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.3;
  padding: 16px 24px;
  text-align: center;
  text-decoration: none;
  transition:
    transform 220ms var(--page-ease),
    box-shadow 220ms var(--page-ease);
}

.un-btn:hover {
  color: var(--un-on-primary);
}

@media (hover: hover) {
  .un-btn:hover {
    box-shadow: 0 12px 24px rgb(var(--page-shadow-rgb) / 0.22);
    transform: translateY(-2px);
  }
}

.un-btn:active {
  box-shadow: none;
  transform: scale(0.98);
}

.un-warning {
  background: var(--page-accent-soft);
  border-left: 3px solid var(--page-accent);
  border-radius: 4px 14px 14px 4px;
  color: var(--page-fg);
  font-size: 14.5px;
  line-height: 1.5;
  padding: 12px 14px;
}

.un-action__note {
  color: var(--page-muted);
  font-size: 14px;
  line-height: 1.5;
}

.un-action__note strong {
  color: var(--page-fg);
}

.un-guide {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.un-guide li {
  display: grid;
  gap: 14px;
}

.un-guide img {
  background: var(--surface);
  border: 1px solid var(--page-outline-variant);
  border-radius: 16px;
  box-shadow: 0 14px 32px rgb(var(--page-shadow-rgb) / 0.08);
  display: block;
  height: auto;
  max-width: 100%;
}

.un-guide .un-guide__dialog {
  max-width: 340px;
  width: 100%;
}

.un-guide p {
  color: var(--page-fg);
  font-size: 15.5px;
  line-height: 1.6;
  max-width: 58ch;
}

.un-guide__note {
  color: var(--page-muted);
  font-size: 13.5px;
  margin-top: 24px;
}

/* Paso 2: Google Play -------------------------------------------------------- */

.un-install {
  background: var(--page-primary-soft);
  color: var(--page-fg);
  padding-block: var(--un-section);
  scroll-margin-top: 24px;
}

.un-install__grid {
  align-items: start;
  display: grid;
  gap: 24px;
}

.un-install__icon {
  border-radius: 22px;
  box-shadow: 0 14px 30px rgb(var(--page-shadow-rgb) / 0.18);
  display: block;
  height: 88px;
  width: 88px;
}

.un-install__lead {
  font-size: clamp(1rem, 0.94rem + 0.3vw, 1.15rem);
  line-height: 1.55;
  margin-top: 16px;
  max-width: 44ch;
}

.un-install__wait {
  font-size: 14.5px;
  line-height: 1.55;
  margin-top: 12px;
  max-width: 52ch;
  opacity: 0.85;
}

/* Insignia oficial de Google Play: sin recolorear ni deformar. */
.un-badge {
  display: inline-block;
  justify-self: start;
  line-height: 0;
  transition: transform 220ms var(--page-ease);
}

.un-badge img {
  display: block;
  height: auto;
  width: 200px;
}

@media (hover: hover) {
  .un-badge:hover {
    transform: translateY(-2px);
  }
}

/* Ayuda ---------------------------------------------------------------------- */

.un-help {
  background: var(--page-surface);
  padding-block: var(--un-section);
}

.un-help__title {
  color: var(--page-fg);
  font-size: clamp(1.75rem, 1.1rem + 2.2vw, 2.7rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.un-help__grid {
  display: grid;
  gap: 28px 48px;
  margin-top: clamp(28px, 4vw, 48px);
}

.un-help__grid > div {
  border-top: 3px solid var(--page-accent);
  padding-top: 18px;
}

.un-help__grid dt {
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.3;
}

.un-help__grid dd {
  color: var(--page-muted);
  font-size: 15px;
  line-height: 1.6;
  margin-top: 8px;
}

.un-help__more {
  color: var(--page-muted);
  font-size: 15px;
  margin-top: clamp(32px, 4vw, 48px);
}

.un-summary a:focus-visible,
.un-btn:focus-visible,
.un-badge:focus-visible,
.un-help__more a:focus-visible {
  outline: 3px solid var(--page-accent);
  outline-offset: 3px;
}

/* Tablet y escritorio -------------------------------------------------------- */

@media (min-width: 720px) {
  .un-help__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .un-install__grid {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 28px 32px;
  }

  .un-badge {
    grid-column: 2;
  }
}

@media (min-width: 960px) {
  .un-intro__grid {
    align-items: center;
    gap: clamp(48px, 7vw, 112px);
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  /* El botón acompaña la guía: queda fijo a la derecha mientras se leen las
     capturas. */
  .un-step__grid {
    align-items: start;
    column-gap: clamp(40px, 6vw, 88px);
    grid-template-columns: minmax(0, 1fr) minmax(360px, 400px);
    row-gap: 40px;
  }

  .un-step__head {
    grid-column: 1;
    grid-row: 1;
  }

  .un-step__guide {
    grid-column: 1;
    grid-row: 2;
  }

  .un-btn {
    white-space: nowrap;
  }

  .un-action {
    grid-column: 2;
    grid-row: 1 / span 2;
    position: sticky;
    top: 24px;
  }

  .un-install__grid {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .un-badge {
    align-self: center;
    grid-column: 3;
    justify-self: end;
  }
}

/* Entrada en movimiento: solo el titular y el resumen, y solo si se pidió. */
@keyframes un-rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .un-intro__copy > *,
  .un-summary {
    animation: un-rise 620ms var(--page-ease) backwards;
  }

  .un-intro__title {
    animation-delay: 80ms;
  }

  .un-intro__lead {
    animation-delay: 160ms;
  }

  .un-summary {
    animation-delay: 240ms;
  }
}