/* =========================================================================
   ENTRE LA CIENCIA Y LA FICCIÓN — Estilos
   Estética: almanaque literario cósmico · azul marino profundo,
   púrpura "ciencia" y cian "ficción".
   ========================================================================= */

:root {
  --navy-900: #050d24;
  --navy-800: #08153a;
  --navy-700: #0c1f52;
  --navy-600: #142a66;

  --purple: #9b7fe0;
  --purple-bright: #b298ff;
  --cyan: #2bc1ff;
  --cyan-bright: #5fd4ff;

  /* Cálido complementario (opuesto a la paleta fría del logo) */
  --amber: #ffb44d;
  --coral: #ff6f5e;

  --ink: #eaf0ff;
  --ink-soft: #aab8db;
  --ink-faint: #6f7fab;

  --line: rgba(155, 127, 224, 0.18);
  --card: rgba(13, 27, 66, 0.55);

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Familjen Grotesk", system-ui, sans-serif;
  --font-mono: "Space Mono", monospace;

  --maxw: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--navy-900);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ---------- Fondo atmosférico ---------- */
#starfield {
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(ellipse 120% 80% at 50% -10%, #0e1f55 0%, var(--navy-900) 55%);
}

.nebula {
  position: fixed;
  z-index: -2;
  width: 60vw;
  height: 60vw;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.35;
  pointer-events: none;
}
.nebula--purple {
  top: -15vw; left: -10vw;
  background: radial-gradient(circle, var(--purple) 0%, transparent 65%);
  animation: drift1 26s ease-in-out infinite alternate;
}
.nebula--cyan {
  bottom: -20vw; right: -12vw;
  background: radial-gradient(circle, var(--cyan) 0%, transparent 65%);
  opacity: 0.28;
  animation: drift2 32s ease-in-out infinite alternate;
}
@keyframes drift1 {
  to { transform: translate(8vw, 6vw) scale(1.15); }
}
@keyframes drift2 {
  to { transform: translate(-6vw, -4vw) scale(1.1); }
}

.grain {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.045;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Utilidades ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--cyan-bright);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.85em 1.6em;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease),
    background 0.3s var(--ease), color 0.3s var(--ease);
}
.btn--primary {
  background: linear-gradient(100deg, var(--purple) 0%, var(--cyan) 100%);
  color: #06112e;
  font-weight: 700;
  box-shadow: 0 8px 30px -8px rgba(43, 193, 255, 0.5);
}
.btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px -10px rgba(43, 193, 255, 0.65);
}
.btn--ghost {
  border-color: var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.02);
}
.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan-bright);
  transform: translateY(-3px);
}

/* ======================= HERO ======================= */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  padding: 2rem clamp(1.25rem, 5vw, 4rem) 4rem;
}

.hero__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
}
.hero__mark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.4rem;
  letter-spacing: 0.05em;
}
.hero__mark-amp { color: var(--cyan); margin: 0 0.05em; }
.hero__nav-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color 0.3s var(--ease);
}
.hero__nav-link:hover { color: var(--cyan-bright); }

.hero__inner {
  max-width: var(--maxw);
  width: 100%;
  margin: auto;
  padding-block: 4vh;
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(3rem, 13vw, 10.5rem);
  line-height: 0.92;
  letter-spacing: -0.02em;
  margin: 0.4em 0 0.5em;
}
.hero__title .line { display: block; }
.hero__title .line--ciencia {
  font-weight: 600;
  font-style: italic;
  color: var(--purple-bright);
  margin-left: 0.06em;
}
.hero__title .line--y {
  font-size: 0.42em;
  font-style: italic;
  color: var(--ink-faint);
  margin-left: 0.1em;
}
.hero__title .line--ficcion {
  font-weight: 700;
  color: var(--cyan-bright);
  margin-left: 0.18em;
}

.hero__lede {
  max-width: 46ch;
  font-size: clamp(1rem, 1.6vw, 1.22rem);
  color: var(--ink-soft);
  margin-bottom: 2.2rem;
}

.hero__cta { display: flex; flex-wrap: wrap; gap: 1rem; }

.scroll-cue {
  position: absolute;
  bottom: 1.6rem;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}
.scroll-cue span {
  width: 4px; height: 8px;
  border-radius: 4px;
  background: var(--cyan);
  animation: scroll-bob 1.6s var(--ease) infinite;
}
@keyframes scroll-bob {
  0% { opacity: 0; transform: translateY(-4px); }
  40% { opacity: 1; }
  100% { opacity: 0; transform: translateY(14px); }
}

/* ======================= SECTION HEAD ======================= */
.section-head {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 4rem);
}
.section-head__kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--purple-bright);
  margin-bottom: 0.6rem;
}
.section-head__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.2rem, 6vw, 4.2rem);
  line-height: 1;
  letter-spacing: -0.02em;
}
.section-head__sub {
  max-width: 52ch;
  margin-top: 1rem;
  color: var(--ink-soft);
}

/* ======================= EPISODIOS ======================= */
.episodes { padding: clamp(5rem, 12vh, 9rem) 0; }

.episode-list {
  max-width: var(--maxw);
  margin: 3.5rem auto 0;
  padding: 0 clamp(1.25rem, 5vw, 4rem);
  display: flex;
  flex-direction: column;
  gap: clamp(2rem, 4vw, 3.5rem);
}

.episode {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: stretch;
  padding: clamp(1.25rem, 2.5vw, 2rem);
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--card);
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
  transition: transform 0.5s var(--ease), border-color 0.5s var(--ease),
    box-shadow 0.5s var(--ease);
}
.episode::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    600px circle at var(--mx, 50%) var(--my, 0%),
    rgba(91, 212, 255, 0.08),
    transparent 45%
  );
  opacity: 0;
  transition: opacity 0.5s var(--ease);
  pointer-events: none;
}
.episode:hover {
  transform: translateY(-5px);
  border-color: rgba(91, 212, 255, 0.4);
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.8);
}
.episode:hover::before { opacity: 1; }

/* Alterna la posición del video en pantallas grandes */
.episode:nth-child(even) .episode__media { order: 2; }

.episode__media { position: relative; }
.episode__thumb {
  display: block;
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
}
.episode__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease), filter 0.6s var(--ease);
  filter: saturate(1.05);
}
.episode__thumb:hover img { transform: scale(1.06); }
.episode__play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, transparent 40%, rgba(5, 13, 36, 0.55));
  transition: background 0.4s var(--ease);
}
.episode__play span {
  width: 64px; height: 64px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(5, 13, 36, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(4px);
  transition: transform 0.4s var(--ease), background 0.4s var(--ease);
}
.episode__play span::after {
  content: "";
  width: 0; height: 0;
  border-left: 16px solid var(--ink);
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  margin-left: 4px;
}
.episode__thumb:hover .episode__play span {
  transform: scale(1.12);
  background: linear-gradient(100deg, var(--purple), var(--cyan));
}
.episode__thumb:hover .episode__play span::after { border-left-color: #06112e; }

.episode__body {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.episode__meta {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.7rem;
}
.episode__code {
  color: #06112e;
  background: linear-gradient(100deg, var(--purple), var(--cyan));
  padding: 0.25em 0.7em;
  border-radius: 6px;
  font-weight: 700;
}
.episode__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.5rem, 2.6vw, 2.15rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
}
.episode__author {
  font-style: italic;
  color: var(--purple-bright);
  margin-top: 0.25rem;
  font-size: 1.02rem;
}
.episode__summary {
  color: var(--ink-soft);
  margin-top: 0.9rem;
  font-size: 0.98rem;
}

/* Libros */
.books {
  margin-top: auto;
  padding-top: 1.4rem;
}
.books__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.8rem;
}
.book {
  display: grid;
  gap: 0.85rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}
.book:last-child { padding-bottom: 0; }
.book__info { min-width: 0; }
.book__title {
  font-weight: 600;
  font-size: 0.98rem;
  display: flex;
  align-items: baseline;
  gap: 0.5em;
}
.book__title::before {
  content: "📖";
  font-size: 0.85em;
}
.book__author {
  font-size: 0.82rem;
  color: var(--ink-faint);
}
.book__buy {
  display: block;
  width: 100%;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  padding: 0.95em 1.4em;
  border-radius: 999px;
  border: none;
  background: linear-gradient(100deg, var(--amber) 0%, var(--coral) 100%);
  color: #2a0f02;
  box-shadow: 0 10px 26px -12px rgba(255, 111, 94, 0.6);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease),
    filter 0.3s var(--ease);
}
.book__buy:hover {
  transform: translateY(-2px);
  filter: brightness(1.06);
  box-shadow: 0 16px 36px -12px rgba(255, 111, 94, 0.75);
}
.book__soon {
  display: block;
  width: 100%;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding: 0.95em 1.4em;
  border: 1px dashed var(--line);
  border-radius: 999px;
}

/* ======================= SOPORTE / PATREON ======================= */
.support {
  padding: 0 clamp(1.25rem, 5vw, 4rem) clamp(5rem, 10vh, 8rem);
}
.support__card {
  max-width: var(--maxw);
  margin: 0 auto;
  text-align: center;
  padding: clamp(2.5rem, 6vw, 5rem);
  border-radius: 26px;
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 120% at 50% 0%, rgba(155,127,224,0.14), transparent 60%),
    var(--card);
  backdrop-filter: blur(8px);
}
.support__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-style: italic;
  font-size: clamp(2rem, 5vw, 3.4rem);
  margin-bottom: 1rem;
}
.support__text {
  max-width: 54ch;
  margin: 0 auto 2rem;
  color: var(--ink-soft);
}

/* ======================= FOOTER ======================= */
.footer {
  border-top: 1px solid var(--line);
  padding: clamp(3rem, 6vw, 5rem) clamp(1.25rem, 5vw, 4rem);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}
.footer__logo {
  width: clamp(180px, 40vw, 260px);
  border-radius: 14px;
  border: 1px solid var(--line);
}
.footer__social {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem;
}
.footer__social a {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.7em 1.3em;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  transition: all 0.3s var(--ease);
}
.footer__social a:hover {
  color: var(--cyan-bright);
  border-color: var(--cyan);
  transform: translateY(-2px);
}
.footer__legal {
  font-size: 0.82rem;
  color: var(--ink-faint);
}
.footer__legal span { color: var(--cyan); }

/* ======================= REVEAL ON LOAD/SCROLL ======================= */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
}
.is-in [data-reveal],
[data-reveal].is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.hero [data-reveal]:nth-child(1) { transition-delay: 0.05s; }
.hero [data-reveal]:nth-child(2) { transition-delay: 0.15s; }
.hero [data-reveal]:nth-child(3) { transition-delay: 0.3s; }
.hero [data-reveal]:nth-child(4) { transition-delay: 0.45s; }

.episode {
  opacity: 0;
  transform: translateY(40px);
}
.episode.is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease),
    border-color 0.5s var(--ease), box-shadow 0.5s var(--ease);
}

/* ======================= RESPONSIVE ======================= */
@media (max-width: 820px) {
  .episode { grid-template-columns: 1fr; }
  .episode:nth-child(even) .episode__media { order: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal], .episode { opacity: 1; transform: none; }
}