/* ============================================================
   Astra Sampler FX — hoja de estilos principal
   Tema: cosmos oscuro (negro azulado, estrellas, cian/violeta)
   Móvil primero. Sin dependencias externas.
   ============================================================ */

:root {
  --bg: #05060f;
  --bg-2: #0a0d1f;
  --panel: #0d1126;
  --panel-2: #111634;
  --line: rgba(140, 160, 255, 0.14);
  --text: #e8ecff;
  --muted: #9aa3c7;
  --cyan: #4de3ff;
  --violeta: #8b5cf6;
  --violeta-claro: #a78bfa;
  --grad: linear-gradient(135deg, #4de3ff 0%, #8b5cf6 100%);
  --radius: 16px;
  --fuente: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  font-family: var(--fuente);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Fondo estrellado (canvas fijo generado por js/cosmos.js) */
#cielo {
  position: fixed;
  inset: 0;
  z-index: -2;
  display: block;
  width: 100%;
  height: 100%;
}

/* Nebulosas suaves con gradientes CSS */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 40% at 15% 10%, rgba(139, 92, 246, 0.16), transparent 60%),
    radial-gradient(ellipse 50% 35% at 85% 30%, rgba(77, 227, 255, 0.10), transparent 60%),
    radial-gradient(ellipse 70% 50% at 50% 95%, rgba(139, 92, 246, 0.10), transparent 65%);
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--cyan);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.contenedor {
  width: min(100% - 2.5rem, 1080px);
  margin-inline: auto;
}

/* ---------- Accesibilidad ---------- */
.salto-contenido {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--violeta);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  z-index: 100;
}

.salto-contenido:focus {
  left: 1rem;
  top: 1rem;
}

/* ---------- Cabecera ---------- */
.cabecera {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(5, 6, 15, 0.82);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.cabecera-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.8rem;
}

.logo {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  color: var(--text);
  white-space: nowrap;
}

.logo:hover {
  text-decoration: none;
}

.logo .fx {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-secciones {
  display: none;
  gap: 1.4rem;
}

.nav-secciones a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 500;
}

.nav-secciones a:hover {
  color: var(--text);
  text-decoration: none;
}

@media (min-width: 760px) {
  .nav-secciones {
    display: flex;
  }
}

/* ---------- Botones ---------- */
.btn {
  display: inline-block;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  text-align: center;
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.btn-cta {
  background: var(--grad);
  color: #05060f;
  box-shadow: 0 0 24px rgba(77, 227, 255, 0.35), 0 4px 18px rgba(139, 92, 246, 0.35);
}

.btn-cta:hover {
  filter: brightness(1.1);
  box-shadow: 0 0 34px rgba(77, 227, 255, 0.5), 0 6px 24px rgba(139, 92, 246, 0.45);
}

.btn-secundario {
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(13, 17, 38, 0.6);
}

.btn-secundario:hover {
  border-color: var(--cyan);
}

.btn-mini {
  padding: 0.55rem 1.1rem;
  font-size: 0.88rem;
}

.nota-cta {
  margin-top: 0.7rem;
  font-size: 0.85rem;
  color: var(--muted);
}

/* ---------- Hero ---------- */
.hero {
  padding-block: 4rem 3rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2.1rem, 7vw, 3.6rem);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.hero h1 .degradado {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero .subtitulo {
  margin: 1.1rem auto 0;
  max-width: 40rem;
  font-size: clamp(1rem, 3vw, 1.2rem);
  color: var(--muted);
}

.hero .acciones {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
}

@media (min-width: 600px) {
  .hero .acciones {
    flex-direction: row;
    justify-content: center;
  }
}

.hero .formatos {
  margin-top: 1.6rem;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- Placeholder de capturas ---------- */
.captura-placeholder {
  margin-top: 2.5rem;
  border: 2px dashed rgba(140, 160, 255, 0.4);
  border-radius: var(--radius);
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  padding: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
  text-align: center;
  background: rgba(13, 17, 38, 0.4);
}

.captura-placeholder.compacta {
  aspect-ratio: 4 / 3;
  margin-top: 0;
}

/* ---------- Secciones ---------- */
.seccion {
  padding-block: 4.5rem;
}

@media (min-width: 760px) {
  .seccion {
    padding-block: 6rem;
  }
}

.seccion-alterna {
  background: linear-gradient(180deg, transparent, rgba(10, 13, 31, 0.75) 15%, rgba(10, 13, 31, 0.75) 85%, transparent);
}

.etiqueta {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(77, 227, 255, 0.35);
  border-radius: 999px;
  padding: 0.3rem 0.9rem;
  margin-bottom: 1rem;
}

.seccion h2 {
  font-size: clamp(1.6rem, 5vw, 2.4rem);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 0.8rem;
}

.seccion .intro {
  color: var(--muted);
  max-width: 44rem;
  margin-bottom: 2.5rem;
}

/* ---------- Rejilla de características ---------- */
.rejilla {
  display: grid;
  gap: 1.2rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .rejilla {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .rejilla-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.tarjeta {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.tarjeta:hover {
  border-color: rgba(77, 227, 255, 0.45);
  transform: translateY(-3px);
}

.tarjeta h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.tarjeta p {
  color: var(--muted);
  font-size: 0.95rem;
}

.tarjeta .icono {
  font-size: 1.3rem;
  line-height: 1;
}

/* ---------- FX KEYS ---------- */
.teclas-fx {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.9rem;
}

.tecla {
  background: #05060f;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.4rem 0.7rem;
  font-size: 0.8rem;
  color: var(--text);
}

.tecla b {
  color: var(--cyan);
  margin-right: 0.3rem;
}

/* ---------- Librería y Planets ---------- */
.lista-packs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin-block: 1rem 2rem;
}

.lista-packs li {
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.35);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-size: 0.85rem;
  color: var(--violeta-claro);
}

.planeta {
  position: relative;
  overflow: hidden;
}

.planeta::after {
  content: "";
  position: absolute;
  top: -30px;
  right: -30px;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(77, 227, 255, 0.35), rgba(139, 92, 246, 0.25) 55%, transparent 75%);
  pointer-events: none;
}

.planeta h3 {
  color: var(--cyan);
}

.aviso-mensual {
  margin-top: 2rem;
  background: linear-gradient(135deg, rgba(77, 227, 255, 0.1), rgba(139, 92, 246, 0.12));
  border: 1px solid rgba(139, 92, 246, 0.4);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
}

.aviso-mensual strong {
  color: var(--cyan);
}

/* ---------- Cosmos ---------- */
.cosmos-detalles {
  display: grid;
  gap: 1.2rem;
  margin-top: 2rem;
}

@media (min-width: 760px) {
  .cosmos-detalles {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---------- Precio ---------- */
.caja-precio {
  max-width: 30rem;
  margin-inline: auto;
  background: var(--panel-2);
  border: 1px solid rgba(77, 227, 255, 0.35);
  border-radius: 24px;
  padding: 2.2rem 1.8rem;
  text-align: center;
  box-shadow: 0 0 60px rgba(139, 92, 246, 0.18);
}

.caja-precio .plan {
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  font-weight: 700;
}

.precio {
  font-size: clamp(2.6rem, 9vw, 3.6rem);
  font-weight: 800;
  margin-block: 0.4rem 0.1rem;
}

.precio small {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--muted);
}

.impuestos {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1.4rem;
}

.lista-incluye {
  list-style: none;
  text-align: left;
  margin-bottom: 1.8rem;
}

.lista-incluye li {
  padding: 0.45rem 0;
  padding-left: 1.7rem;
  position: relative;
  font-size: 0.95rem;
  border-bottom: 1px solid rgba(140, 160, 255, 0.08);
}

.lista-incluye li:last-child {
  border-bottom: none;
}

.lista-incluye li::before {
  content: "✦";
  position: absolute;
  left: 0;
  color: var(--cyan);
}

.caja-precio .btn {
  width: 100%;
}

/* Dos planes: mensual + anual */
.rejilla-precios {
  display: grid;
  gap: 1.6rem;
  grid-template-columns: 1fr;
  max-width: 62rem;
  margin-inline: auto;
  align-items: stretch;
}

@media (min-width: 860px) {
  .rejilla-precios {
    grid-template-columns: repeat(2, 1fr);
  }
}

.rejilla-precios .caja-precio {
  max-width: none;
  margin-inline: 0;
  position: relative;
  display: flex;
  flex-direction: column;
}

.rejilla-precios .lista-incluye {
  flex-grow: 1;
}

.caja-precio-anual {
  border-color: rgba(139, 92, 246, 0.65);
  box-shadow: 0 0 60px rgba(77, 227, 255, 0.22);
}

.badge-ahorro {
  position: absolute;
  top: -0.85rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--grad);
  color: #05060f;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 0.3rem 1rem;
  white-space: nowrap;
}

/* ---------- FAQ ---------- */
.faq {
  max-width: 46rem;
  margin-inline: auto;
}

.faq details {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 0.8rem;
  overflow: hidden;
}

.faq summary {
  cursor: pointer;
  padding: 1.1rem 1.3rem;
  font-weight: 600;
  list-style: none;
  position: relative;
  padding-right: 2.8rem;
}

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

.faq summary::after {
  content: "+";
  position: absolute;
  right: 1.3rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--cyan);
  font-size: 1.3rem;
  font-weight: 400;
  transition: transform 0.2s ease;
}

.faq details[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.faq details p {
  padding: 0 1.3rem 1.2rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.faq details p + p {
  margin-top: -0.4rem;
}

/* ---------- CTA final ---------- */
.cta-final {
  text-align: center;
}

.cta-final h2 {
  margin-bottom: 1.4rem;
}

/* ---------- Pie ---------- */
.pie {
  border-top: 1px solid var(--line);
  padding-block: 2.5rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.pie-inner {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.pie nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 1.4rem;
}

.pie a {
  color: var(--muted);
}

.pie a:hover {
  color: var(--text);
}

.pie .marca {
  color: var(--text);
  font-weight: 700;
}

@media (min-width: 760px) {
  .pie-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

/* ---------- Página de descarga ---------- */
.descarga-hero {
  text-align: center;
  padding-block: 3.5rem 1rem;
}

.tarjetas-descarga {
  display: grid;
  gap: 1.2rem;
  grid-template-columns: 1fr;
  margin-top: 2rem;
}

@media (min-width: 640px) {
  .tarjetas-descarga {
    grid-template-columns: repeat(2, 1fr);
  }
}

.tarjeta-descarga {
  text-align: center;
  padding: 2rem 1.5rem;
}

.tarjeta-descarga .so {
  font-size: 2.2rem;
  margin-bottom: 0.6rem;
}

.tarjeta-descarga .btn {
  margin-top: 1rem;
  width: 100%;
}

.tarjeta-descarga .detalle {
  margin-top: 0.7rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.pasos {
  list-style: none;
  counter-reset: paso;
  max-width: 40rem;
  margin-inline: auto;
}

.pasos li {
  counter-increment: paso;
  position: relative;
  padding: 1rem 0 1rem 3.4rem;
  border-bottom: 1px solid rgba(140, 160, 255, 0.1);
}

.pasos li:last-child {
  border-bottom: none;
}

.pasos li::before {
  content: counter(paso);
  position: absolute;
  left: 0;
  top: 1rem;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 50%;
  background: var(--grad);
  color: #05060f;
  font-weight: 800;
  display: grid;
  place-items: center;
}

.pasos strong {
  display: block;
  margin-bottom: 0.15rem;
}

.pasos p {
  color: var(--muted);
  font-size: 0.93rem;
}

.aviso {
  max-width: 40rem;
  margin: 2.5rem auto 0;
  background: rgba(255, 200, 90, 0.07);
  border: 1px solid rgba(255, 200, 90, 0.35);
  border-radius: var(--radius);
  padding: 1.3rem 1.5rem;
  font-size: 0.93rem;
}

.aviso strong {
  color: #ffd580;
}

.aviso p {
  color: var(--muted);
  margin-top: 0.4rem;
}

/* ---------- Animación de aparición ---------- */
.aparece {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.aparece.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .aparece {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn,
  .tarjeta {
    transition: none;
  }
}