/* Demostración del hero · apertura a pantalla completa (caso de uso 1).
   Cada elemento (.it-N) tiene su propio @keyframes itN generado en src/ShowcaseTimeline.php. */
.intro {
  position: absolute;
  inset: 0;
  z-index: 2;   /* encima de las escenas en reposo (1) y debajo de la que se está abriendo (3) */
  display: grid;
  place-items: center;
  text-align: center;
  padding: 4cqw;
  overflow: hidden;
  pointer-events: none;
  background: radial-gradient(120% 140% at 15% 0%, #22397a 0%, #0e1634 48%, #08111f 100%);
  animation: intro var(--loop) infinite;
}
.intro::before {
  content: "";
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(closest-side, rgba(111, 149, 255, 0.38), transparent 70%) 8% 12% / 55% 55% no-repeat,
    radial-gradient(closest-side, rgba(60, 207, 189, 0.3), transparent 70%) 92% 100% / 50% 50% no-repeat;
}
.intro::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1.5px);
  background-size: 2.2cqw 2.2cqw;
}
.intro-inner { position: relative; z-index: 1; display: grid; justify-items: center; gap: 1.6cqw; max-width: 90%; }
.intro-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.9cqw;
  font-weight: 800;
  font-size: 1.45cqw;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #cfe0ff;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 0.8cqw 1.8cqw;
  border-radius: 999px;
}
.intro-pill i { width: 1cqw; aspect-ratio: 1; border-radius: 50%; background: #3ccfbd; box-shadow: 0 0 1.4cqw #3ccfbd; }
.intro-title { margin: 0; color: #fff; font-weight: 800; line-height: 1.12; letter-spacing: -0.02em; font-size: 4.5cqw; }
.intro-title .gpt { color: #4fd1a5; }
.intro-title .claude { color: #ff9a76; }
.intro-sub { margin: 0; color: #c3d0ee; font-weight: 600; font-size: 2.35cqw; }

.intro-icons { display: flex; justify-content: center; gap: 1.5cqw; list-style: none; padding: 0; margin: 0.8cqw 0 0; }
.intro-icons li { display: grid; justify-items: center; gap: 0.7cqw; color: #dbe6ff; font-size: 1.25cqw; font-weight: 700; }
.intro-icons .tile {
  width: 5.4cqw;
  aspect-ratio: 1;
  border-radius: 1.5cqw;
  background: var(--c);
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.4cqw;
  box-shadow: 0 1.2cqw 2.4cqw rgba(0, 0, 0, 0.35);
}
.intro-icons svg { width: 56%; height: 56%; stroke: #fff; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.it { opacity: 0; animation-duration: var(--loop); animation-iteration-count: infinite; animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1); }
.it-0 { animation-name: it0; } .it-1 { animation-name: it1; } .it-2 { animation-name: it2; } .it-3 { animation-name: it3; }
.it-4 { animation-name: it4; } .it-5 { animation-name: it5; } .it-6 { animation-name: it6; } .it-7 { animation-name: it7; }
.it-8 { animation-name: it8; } .it-9 { animation-name: it9; } .it-10 { animation-name: it10; } .it-11 { animation-name: it11; }