/**
 * modelado.css — Sección "Modelado 3D" de la portada (template-parts/modeling-section.php).
 *
 * Minimalista a propósito, en contraste con Impresión: una pantalla fija, un
 * objeto y una frase a la vez. El scroll es el único control.
 * Tiza = idea · cian = modelo · naranja = pieza.
 *
 * Requiere que ningún ancestro tenga overflow hidden/auto (rompe position: sticky);
 * la portada usa overflow-x: clip en impresion.css.
 *
 * @package Astra Child - Xeta 3D Studio
 */

.xeta-model {
  --xm-bg: #030b0e;
  --xm-fg: #e4e7ea;
  --xm-muted: #8c9aa3;
  --xm-hair: #1a262d;
  --xm-chalk: #ece7dc;
  --xm-cyan: #68dcf7;
  --xm-orange: #ff6a1a;
  --xm-gutter: clamp(20px, 5vw, 72px);

  position: relative;
  width: 100%;
  background: var(--xm-bg);
  color: var(--xm-fg);
  font-family: var(--font-text, "Plus Jakarta Sans", system-ui, sans-serif);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  scroll-margin-top: 0;
}
.xeta-model *,
.xeta-model *::before,
.xeta-model *::after {
  box-sizing: border-box;
}
.xeta-model p,
.xeta-model dl,
.xeta-model dd {
  margin: 0;
}
.xeta-model :focus-visible {
  outline: 1px solid var(--xm-cyan);
  outline-offset: 4px;
}

/* Solo para lectores de pantalla */
.xm-sr {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px !important;
  padding: 0 !important;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   Pieza de scroll
   ========================================================================== */
.xm-track {
  position: relative;
  height: 580vh;
}
.xm-pin {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
}
.xm-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* Foto final a sangre, con velo oscuro abajo para la frase.
   object-position debe coincidir con PHOTO.posX / posY en modelado.js */
.xm-photo {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
}
.xm-photo img {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  object-fit: cover;
  object-position: 50% 60%;
  display: block;
}
.xm-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(3, 11, 14, 0.9) 0%, rgba(3, 11, 14, 0.55) 26%, rgba(3, 11, 14, 0) 52%);
}

/* Bajo el header fijo del sitio */
.xm-label {
  position: absolute;
  top: clamp(104px, 14vh, 132px);
  left: var(--xm-gutter);
  font-family: var(--font-mono, "Roboto Mono", ui-monospace, monospace);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--xm-muted);
}

.xm-chapters {
  position: absolute;
  left: var(--xm-gutter);
  right: var(--xm-gutter);
  bottom: clamp(28px, 9vh, 96px);
  height: 11.5rem;
  pointer-events: none;
}
.xm-chapter {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 100%;
  opacity: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  will-change: opacity, transform;
}
.xm-chapter:first-child {
  opacity: 1; /* visible antes de que cargue el script */
}
.xm-n {
  font-family: var(--font-mono, "Roboto Mono", ui-monospace, monospace);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--xm-muted);
}
.xm-n b {
  font-weight: 400;
  color: var(--xm-fg);
}
.xm-chapter--photo .xm-n {
  color: var(--xm-fg);
}
.xm-chapter p {
  max-width: 12.5em;
  font-family: var(--font-heading, "Space Grotesk", sans-serif);
  font-weight: 300;
  font-size: clamp(1.75rem, 4vw, 3.3rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: var(--xm-fg);
  text-wrap: balance;
}
.xm-chapter em {
  font-style: normal;
}
.xm-chalk { color: var(--xm-chalk); }
.xm-cyan { color: var(--xm-cyan); }
.xm-orange { color: var(--xm-orange); }

.xm-rail {
  position: absolute;
  right: clamp(16px, 3vw, 40px);
  top: 24%;
  bottom: 22%;
  width: 1px;
  background: var(--xm-hair);
}
.xm-rail i {
  position: absolute;
  inset: 0;
  background: var(--xm-chalk);
  transform-origin: top;
  transform: scaleY(0);
}
.xm-hint {
  position: absolute;
  right: clamp(16px, 3vw, 40px);
  bottom: clamp(28px, 9vh, 96px);
  transform: translateX(50%) rotate(90deg);
  transform-origin: center;
  font-family: var(--font-mono, "Roboto Mono", ui-monospace, monospace);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--xm-muted);
  white-space: nowrap;
  transition: opacity 0.4s;
}

/* Sin WebGL: las frases y la foto se muestran una debajo de otra */
.xeta-model.is-static .xm-track { height: auto; }
.xeta-model.is-static .xm-pin { position: static; height: auto; padding-top: 96px; }
.xeta-model.is-static .xm-canvas,
.xeta-model.is-static .xm-rail,
.xeta-model.is-static .xm-hint,
.xeta-model.is-static .xm-label { display: none; }
.xeta-model.is-static .xm-chapters { position: static; height: auto; display: flex; flex-direction: column; gap: 56px; padding: 0 var(--xm-gutter) 56px; }
.xeta-model.is-static .xm-chapter { position: static; opacity: 1 !important; transform: none !important; visibility: visible !important; }
.xeta-model.is-static .xm-photo { position: relative; height: 60vh; opacity: 1; visibility: visible; }

/* ==========================================================================
   Después del scroll
   ========================================================================== */
.xm-after {
  max-width: 1120px;
  margin: 0 auto;
  padding: 96px 20px 120px;
  display: flex;
  flex-direction: column;
  gap: 48px;
}
.xm-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px 56px;
  border-top: 1px solid var(--xm-hair);
  padding-top: 32px;
}
.xm-facts > div {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.xm-facts dt {
  font-family: var(--font-mono, "Roboto Mono", ui-monospace, monospace);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--xm-muted);
}
.xm-facts dd {
  font-family: var(--font-heading, "Space Grotesk", sans-serif);
  font-weight: 300;
  font-size: clamp(1.25rem, 2.2vw, 1.7rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--xm-fg);
  max-width: 24em;
}
.xm-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 40px;
}
.xm-link {
  font-size: 1rem;
  font-weight: 500;
  color: var(--xm-fg) !important;
  text-decoration: none !important;
  border-bottom: 1px solid var(--xm-hair);
  padding-bottom: 5px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.xm-link--main {
  border-bottom-color: var(--xm-orange);
}
.xm-link:hover {
  color: var(--xm-orange) !important;
  border-bottom-color: var(--xm-orange);
}

@media (max-width: 640px) {
  .xm-chapters { height: 9.5rem; }
  .xm-facts { grid-template-columns: minmax(0, 1fr); }
  .xm-after { padding: 72px 20px 96px; }
}

@media (prefers-reduced-motion: reduce) {
  .xm-hint,
  .xm-link { transition: none; }
}