/* =========================================================
   KONNECT V4 — "Qué es KONNECT" (apertura narrativa de Inicio)
   Introducción editorial + motion graphic + puente a "Así conecta".
   Independiente del hero provisional: no toca .home-hero ni hvp1-*.
   Comportamiento: assets/js/explainer.js
========================================================= */

.home-explainer {
  --xf-ease: cubic-bezier(0.23, 1, 0.32, 1);
  padding-top: clamp(96px, 11vw, 168px);
  color: var(--k-on-dark);
  overflow: clip;
}

/* ---------- 1. Introducción editorial ---------- */
.explainer-intro { position: relative; }
/* La señal del horizonte del hero desciende hasta el antetítulo:
   continuidad gráfica entre el hero y la nueva apertura. */
.explainer-intro::before {
  content: "";
  position: absolute;
  left: var(--k-gutter);
  bottom: calc(100% + 14px);
  width: 2px;
  height: clamp(64px, 8vw, 128px);
  border-radius: 2px;
  background: linear-gradient(rgba(94, 237, 242, 0), var(--k-aqua));
}
.explainer-intro__kicker { margin-bottom: clamp(22px, 2.4vw, 32px); }
.explainer-intro__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 88px);
  align-items: end;
}
.explainer-intro__title {
  font-size: clamp(2.5rem, 5.6vw, 5.1rem);
  line-height: 0.98;
  letter-spacing: -0.015em;
  max-width: 13.5ch;
}
.explainer-intro__lede { display: grid; gap: 18px; max-width: 46ch; padding-bottom: 6px; }
.explainer-intro__lede p { font-size: clamp(1.02rem, 1.15vw, 1.16rem); line-height: 1.65; color: var(--k-on-dark-2); }
.explainer-intro__lede strong { color: var(--k-on-dark); font-weight: 600; }
.explainer-intro__lede p:last-child { color: var(--k-on-dark); font-family: var(--k-font-display); font-size: clamp(1.25rem, 1.6vw, 1.5rem); line-height: 1.3; }

.explainer-keys {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 48px);
  margin-top: clamp(56px, 7vw, 104px);
}
.explainer-key { padding-top: 22px; border-top: 1px solid rgba(245, 247, 255, 0.18); position: relative; }
.explainer-key::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 56px;
  height: 2px;
  background: var(--k-aqua);
}
.explainer-key dt {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--k-font-display);
  font-size: clamp(1.35rem, 1.8vw, 1.7rem);
  font-weight: 600;
  line-height: 1.1;
}
.explainer-key__num { font-size: 0.8rem; font-family: var(--k-font-text); font-weight: 700; letter-spacing: 0.08em; color: var(--k-aqua); }
.explainer-key dd { margin-top: 12px; font-size: 0.98rem; line-height: 1.6; color: var(--k-on-dark-2); max-width: 38ch; }

@media (max-width: 899px) {
  .explainer-intro__grid { grid-template-columns: 1fr; gap: 28px; }
  .explainer-keys { grid-template-columns: 1fr; gap: 0; margin-top: 48px; }
  .explainer-key { padding: 20px 0 22px; }
}

/* ---------- 2. Motion graphic ---------- */
.explainer-film { margin-top: clamp(80px, 10vw, 144px); }
.explainer-film__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  margin-bottom: 20px;
}
.explainer-film__title { font-size: clamp(1.35rem, 1.9vw, 1.75rem); line-height: 1.15; }
.explainer-film__hint { font-size: 0.88rem; color: var(--k-on-dark-3); }
.explainer-film__body { display: grid; gap: clamp(20px, 2.4vw, 32px); }

.explainer-stage {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: clamp(20px, 2.4vw, 32px);
  overflow: hidden;
  background:
    radial-gradient(70% 80% at 50% 45%, rgba(34, 36, 144, 0.55), rgba(34, 36, 144, 0) 70%),
    linear-gradient(160deg, #0E0F3C 0%, #08081A 55%, #0B0C2C 100%);
  box-shadow:
    inset 0 0 0 1px rgba(245, 247, 255, 0.1),
    0 40px 90px -40px rgba(0, 0, 0, 0.8),
    0 0 0 1px rgba(94, 237, 242, 0.04);
  display: none;
}
/* El escenario solo existe cuando explainer.js lo construyó (sin JS, el
   guion completo explica todo). */
[data-xf-ready] .explainer-stage { display: block; }
.explainer-stage__canvas { position: absolute; inset: 0; }
.explainer-stage__canvas > svg { display: block; width: 100%; height: 100%; }
.explainer-stage text { font-family: var(--k-font-text); }
.explainer-stage .xf-display { font-family: var(--k-font-display); font-weight: 600; }

/* ---------- Controles y guion ---------- */
.explainer-film__side { display: grid; gap: 18px; }
.explainer-controls { display: flex; align-items: center; gap: 14px; }
.explainer-controls[hidden] { display: none; }
.explainer-controls__toggle {
  flex: none;
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(94, 237, 242, 0.55);
  background: rgba(94, 237, 242, 0.08);
  color: var(--k-aqua);
  cursor: pointer;
  transition: transform var(--k-dur-press) var(--xf-ease), background-color var(--k-dur-hover) ease;
}
.explainer-controls__toggle:active { transform: scale(0.94); }
@media (hover: hover) and (pointer: fine) {
  .explainer-controls__toggle:hover { background: rgba(94, 237, 242, 0.18); }
}
.explainer-controls__toggle:focus-visible { outline: 2px solid var(--k-aqua); outline-offset: 3px; }
.xf-icon { grid-area: 1 / 1; display: none; }
[data-xf-state="playing"] .xf-icon--pause,
[data-xf-state="paused"] .xf-icon--play,
[data-xf-state="ended"] .xf-icon--replay { display: block; }
.explainer-controls__count {
  font-family: var(--k-font-display);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  color: var(--k-on-dark-3);
  font-variant-numeric: tabular-nums;
}
.explainer-controls__count span { color: var(--k-on-dark); }
.explainer-controls__track { flex: 1; height: 2px; border-radius: 2px; background: rgba(245, 247, 255, 0.16); overflow: hidden; }
.explainer-controls__track span { display: block; height: 100%; background: var(--k-aqua); transform-origin: 0 50%; transform: scaleX(0); }

.explainer-script { display: grid; counter-reset: none; border-top: 1px solid rgba(245, 247, 255, 0.12); }
.xf-chapter { position: relative; border-bottom: 1px solid rgba(245, 247, 255, 0.12); }
.xf-chapter::before {
  content: "";
  position: absolute;
  left: 0;
  top: -1px;
  height: 2px;
  width: 100%;
  background: var(--k-aqua);
  transform-origin: 0 50%;
  transform: scaleX(var(--xf-p, 0));
  opacity: 0;
}
.xf-chapter.is-active::before { opacity: 1; }
.xf-chapter.is-done::before { opacity: 0.45; transform: scaleX(1); }
.xf-chapter__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0;
  padding: 14px 0;
  color: var(--k-on-dark);
  font-family: var(--k-font-display);
  font-size: 1.18rem;
  font-weight: 600;
  line-height: 1.2;
}
[data-xf-interactive] .xf-chapter__head { display: block; padding: 0; }
.xf-chapter__btn {
  display: flex;
  align-items: baseline;
  gap: 14px;
  width: 100%;
  min-height: 52px;
  padding: 14px 0;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  color: var(--k-on-dark-2);
  font: inherit;
  transition: color var(--k-dur-hover) ease;
}
.xf-chapter__num { flex: none; width: 1.6em; font-size: 0.82rem; font-family: var(--k-font-text); font-weight: 700; letter-spacing: 0.06em; color: rgba(94, 237, 242, 0.62); }
@media (hover: hover) and (pointer: fine) {
  .xf-chapter__btn:hover { color: var(--k-on-dark); }
}
.xf-chapter__btn:focus-visible { outline: 2px solid var(--k-aqua); outline-offset: 2px; border-radius: 6px; }
.xf-chapter.is-active .xf-chapter__btn { color: var(--k-on-dark); }
.xf-chapter.is-active .xf-chapter__num, .explainer-film:not([data-xf-interactive]) .xf-chapter__num { color: var(--k-aqua); }

/* El texto de cada escena sigue en el árbol de accesibilidad aunque esté
   plegado (no usa display:none): el guion completo siempre es legible. */
.xf-chapter__body {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows 420ms var(--xf-ease);
}
.xf-chapter__body > p {
  overflow: hidden;
  min-height: 0;
  padding: 0 0 16px calc(1.6em * 0.82 + 14px);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--k-on-dark-2);
}
/* Reproducción activa: solo la escena actual muestra su texto. */
[data-xf-interactive] .xf-chapter:not(.is-active) .xf-chapter__body { grid-template-rows: 0fr; }
[data-xf-interactive] .xf-chapter:not(.is-active) .xf-chapter__body > p { padding-bottom: 0; }

/* Escritorio: el guion es una línea de tiempo de siete capítulos bajo el
   escenario; la descripción activa aparece como subtítulo a todo el ancho.
   Las descripciones inactivas siguen en el árbol de accesibilidad
   (opacidad 0, no display:none). */
@media (min-width: 1100px) {
  [data-xf-interactive] .explainer-film__side { grid-template-columns: 48px minmax(0, 1fr); gap: 24px; align-items: start; }
  /* Nivel esencial / sin JS: guion editorial en dos columnas bajo el póster. */
  .explainer-film:not([data-xf-interactive]) .explainer-script { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: clamp(32px, 4vw, 64px); border-top: 0; }
  .explainer-film:not([data-xf-interactive]) .xf-chapter { border-top: 1px solid rgba(245, 247, 255, 0.12); border-bottom: 0; }
  .explainer-controls { flex-direction: column; align-items: flex-start; gap: 10px; padding-top: 10px; }
  .explainer-controls__count, .explainer-controls__track { display: none; }
  [data-xf-interactive] .explainer-script {
    position: relative;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    column-gap: 14px;
    border-top: 0;
    padding-bottom: 92px;
  }
  [data-xf-interactive] .xf-chapter { position: static; border-bottom: 0; }
  [data-xf-interactive] .xf-chapter__btn {
    position: relative;
    flex-direction: column;
    gap: 6px;
    height: 100%;
    min-height: 76px;
    padding: 16px 4px 12px 0;
    border-top: 2px solid rgba(245, 247, 255, 0.16);
    font-size: 1.02rem;
  }
  [data-xf-interactive] .xf-chapter::before { display: none; }
  [data-xf-interactive] .xf-chapter__btn::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: -2px;
    height: 2px;
    background: var(--k-aqua);
    transform-origin: 0 50%;
    transform: scaleX(0);
  }
  [data-xf-interactive] .xf-chapter.is-active .xf-chapter__btn::before { transform: scaleX(var(--xf-p, 0)); }
  [data-xf-interactive] .xf-chapter.is-done .xf-chapter__btn::before { transform: scaleX(1); opacity: 0.5; }
  [data-xf-interactive] .xf-chapter__body {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    display: block;
    opacity: 0;
    transform: translateY(6px);
    pointer-events: none;
    transition: opacity 260ms ease, transform 420ms var(--xf-ease);
  }
  [data-xf-interactive] .xf-chapter.is-active .xf-chapter__body { opacity: 1; transform: none; pointer-events: auto; }
  [data-xf-interactive] .xf-chapter__body > p { padding: 0; max-width: 72ch; font-size: 1.04rem; color: var(--k-on-dark); }
  [data-xf-interactive] .xf-chapter:not(.is-active) .xf-chapter__body { grid-template-rows: none; }
}
@media (max-width: 1099px) {
  .explainer-film__side { gap: 14px; }
}
@media (max-width: 639px) {
  .explainer-stage { aspect-ratio: 900 / 1480; }
  .xf-chapter__btn { min-height: 48px; padding: 12px 0; font-size: 1.08rem; }
  .explainer-film__hint { width: 100%; }
}

/* ---------- 3. Puente hacia "Así conecta KONNECT" ---------- */
.explainer-bridge { position: relative; height: clamp(120px, 13vw, 180px); margin-top: 8px; }
.explainer-bridge__svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.explainer-bridge__route {
  fill: none;
  stroke: var(--k-aqua);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
  stroke-dasharray: 1;
  stroke-dashoffset: 0;
}
[data-xf-bridge].is-armed .explainer-bridge__route { stroke-dashoffset: 1; }
[data-xf-bridge].is-in .explainer-bridge__route { stroke-dashoffset: 0; transition: stroke-dashoffset 1400ms cubic-bezier(0.77, 0, 0.175, 1); }
.explainer-bridge__ticks {
  position: absolute;
  left: 9%;
  right: 50%;
  top: calc(53.3% - 4px);
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}
.explainer-bridge__ticks li {
  position: relative;
  padding-top: 18px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--k-on-dark-3);
}
.explainer-bridge__ticks li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 9px;
  height: 9px;
  margin-left: -4.5px;
  border-radius: 50%;
  background: #0C0D2E;
  border: 2px solid var(--k-aqua);
}
[data-xf-bridge].is-armed .explainer-bridge__ticks li { opacity: 0; transform: translateY(6px); }
[data-xf-bridge].is-in .explainer-bridge__ticks li { opacity: 1; transform: none; transition: opacity 500ms var(--xf-ease), transform 600ms var(--xf-ease); }
[data-xf-bridge].is-in .explainer-bridge__ticks li:nth-child(1) { transition-delay: 700ms; }
[data-xf-bridge].is-in .explainer-bridge__ticks li:nth-child(2) { transition-delay: 800ms; }
[data-xf-bridge].is-in .explainer-bridge__ticks li:nth-child(3) { transition-delay: 900ms; }
[data-xf-bridge].is-in .explainer-bridge__ticks li:nth-child(4) { transition-delay: 1000ms; }
@media (max-width: 767px) {
  .explainer-bridge__ticks { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .xf-chapter__body { transition: none; }
  [data-xf-bridge] .explainer-bridge__route { stroke-dashoffset: 0 !important; transition: none !important; }
  [data-xf-bridge] .explainer-bridge__ticks li { opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* La composición la decide explainer.js por el ancho real del bloque. */
[data-xf-layout="wide"] .explainer-stage { aspect-ratio: 16 / 9; }
[data-xf-layout="tall"] .explainer-stage { aspect-ratio: 900 / 1480; }
/* La pista sobre pausa y escenas solo aplica cuando hay controles. */
.explainer-film:not([data-xf-interactive]) .explainer-film__hint { display: none; }