/* ═══════════════════════════════════════════════════════════════════════════
   RITMO: unidad de interlínea de 28px (Archivo 17px a ~1.65), medio paso 14px.
   Todo margen y padding de bloque es múltiplo de --leading o --half.

   REGLA DE COLOR DEL SISTEMA: --color-accent (#96c5f7) es CLARO — solo
   rellenos. Todo lo entintado (texto, bordes, marcas, cifras) usa
   --color-accent-ink.
   ═══════════════════════════════════════════════════════════════════════ */
:root {
  --leading: 28px;
  --half: 14px;
  --edge: clamp(20px, 5vw, 72px);
  --measure: 54ch;
  --nav-h: 60px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}
@media (pointer: coarse) { :root { --nav-h: 68px } }

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

body { margin: 0; text-wrap: pretty; background: var(--color-bg); overflow-x: clip }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 var(--edge) }

/* Las anclas de la nav no deben quedar debajo de la cabecera fija */
[id] { scroll-margin-top: calc(var(--nav-h) + var(--leading)) }

/* — fondo del hero: fijo detrás de la página, se desvanece al scrollear — */
.hero-bg { position: fixed; inset: 0; z-index: 0; will-change: opacity, transform;
  transform-origin: 50% 40% }
.hero-scrim { position: absolute; inset: 0; pointer-events: none; background:
  linear-gradient(to right, color-mix(in srgb, var(--color-bg) 92%, transparent) 0%, color-mix(in srgb, var(--color-bg) 55%, transparent) 52%, color-mix(in srgb, var(--color-bg) 12%, transparent) 100%),
  linear-gradient(to bottom, transparent 55%, var(--color-bg) 100%) }

/* PLACEHOLDERS — solo del preview. En Astro son <Image> de astro:assets. */
.ph { position: relative; display: block; width: 100%; height: 100%;
  background: linear-gradient(150deg, var(--color-neutral-200) 0%, var(--color-neutral-400) 100%) }
.ph::after { content: attr(data-label); position: absolute; inset: auto 0 0 0;
  padding: var(--half); font-size: 11px; line-height: var(--half); letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--color-neutral-700) }
.ph-hero { background:
  radial-gradient(110% 80% at 76% 26%, var(--color-neutral-100) 0%, transparent 58%),
  radial-gradient(85% 65% at 58% 88%, var(--color-neutral-500) 0%, transparent 55%),
  linear-gradient(155deg, var(--color-neutral-300) 0%, var(--color-neutral-600) 100%) }
.ph-hero::after { text-align: right; padding: var(--leading) var(--edge) }
.ph-2 { background: linear-gradient(155deg, var(--color-neutral-100) 0%, var(--color-neutral-400) 100%) }
.ph-3 { background: linear-gradient(145deg, var(--color-neutral-300) 0%, var(--color-neutral-500) 100%) }

/* — cabecera fija: transparente sobre el hero, opaca al salir de él — */
.site-head { position: fixed; inset: 0 0 auto; z-index: 20;
  border-bottom: 2px solid transparent;
  transition: background-color 240ms var(--ease), border-color 240ms var(--ease) }
.site-head.is-stuck { background: var(--color-bg); border-bottom-color: var(--color-divider) }
@media (prefers-reduced-motion: reduce) { .site-head { transition: none } }

.nav { background: transparent; border-bottom: 0;
  padding-inline: max(var(--edge), calc((100% - 1200px) / 2 + var(--edge))) }
.nav a { white-space: nowrap; display: inline-flex; align-items: center }
.nav a[aria-current='location'] { color: var(--color-accent-ink) }
.nav-brand { text-decoration: none; color: inherit }
.menu-btn { display: none; width: 44px; height: 44px; padding: 0; margin-left: var(--space-2);
  color: var(--color-text) }

.hero { position: relative; z-index: 1; min-height: 100svh;
  display: flex; align-items: flex-end; padding-bottom: calc(3 * var(--leading)) }
.hero .wrap { width: 100% }
.nav-sentinel { position: absolute; top: 82svh; left: 0; width: 1px; height: 1px }
.display { font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: clamp(42px, 6.2vw, 84px); line-height: clamp(44.5px, 6.57vw, 89px);
  letter-spacing: -0.02em; margin: 0; margin-left: -0.058em;
  text-box: trim-both cap alphabetic }
.display .line { display: block }
.hero .sub { font-size: 17px; line-height: var(--leading); max-width: var(--measure);
  margin: calc(1.5 * var(--leading) - 1cap) 0 0; text-box: trim-both cap alphabetic }
.hero .row { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: var(--leading) }

/* — la página, opaca, cubre el fondo conforme sube — */
.page { position: relative; z-index: 1; background: var(--color-bg) }
.rule2 { height: 2px; border: 0; margin: 0; background: var(--color-divider) }
.kicker { display: block; font-size: 13px; line-height: var(--half); letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--color-accent-ink); font-feature-settings: "tnum" 1;
  margin: 0 0 calc(var(--leading) - var(--half)) }

/* — piezas: la rejilla habla, el texto casi no — */
.pieces { padding: calc(3 * var(--leading)) 0 calc(2.5 * var(--leading)) }
.pieces .grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 2.5vw, 32px);
  margin-top: var(--leading) }
.piece { margin: 0 }
.piece .ph { aspect-ratio: 4 / 5; height: auto }
.piece figcaption { font-size: 13px; line-height: var(--half); letter-spacing: 0.08em;
  text-transform: uppercase; color: color-mix(in srgb, var(--color-text) 70%, transparent);
  margin-top: var(--half) }

/* — proceso: filas regladas, marca cuadrada entintada — */
.features { padding: calc(2.5 * var(--leading)) 0 }
.feature { display: grid; grid-template-columns: minmax(64px, 140px) minmax(0, 1fr);
  gap: var(--half) clamp(24px, 4vw, 72px); align-items: baseline;
  padding: calc(1.5 * var(--leading)) 0 }
.feature + .feature { border-top: 2px solid var(--color-divider) }
.f-num { position: relative; font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 15px; line-height: var(--leading); font-feature-settings: "tnum" 1; margin: 0;
  text-box: trim-both cap alphabetic }
.f-num::before { content: ""; position: absolute; left: -24px; top: calc(0.5cap - 5px);
  width: 10px; height: 10px; background: var(--color-accent-ink) }
@media (max-width: 1280px) { .f-num::before { display: none } }
.f-title { font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 24px; line-height: var(--leading); letter-spacing: -0.01em; margin: 0;
  text-box: trim-both cap alphabetic }
.f-copy { font-size: 15.5px; line-height: var(--leading); margin: var(--half) 0 0;
  color: color-mix(in srgb, var(--color-text) 78%, transparent); max-width: 46ch;
  text-box: trim-both cap alphabetic; grid-column: 2 }

/* — cifras: desplazadas al final, entintadas, sin protagonismo — */
.stats { padding: calc(2.5 * var(--leading)) 0 }
.stats .grid { display: grid; grid-template-columns: repeat(3, auto); justify-content: space-between;
  gap: calc(1.5 * var(--leading)) var(--leading) }
.stat-num { font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: clamp(30px, 3vw, 42px); line-height: calc(2 * var(--leading));
  color: var(--color-accent-ink); margin: 0; margin-left: -0.045em;
  font-variant-numeric: tabular-nums; text-box: trim-both cap alphabetic }
.stat-label { font-size: 13px; line-height: var(--half); letter-spacing: 0.08em;
  text-transform: uppercase; color: color-mix(in srgb, var(--color-text) 70%, transparent);
  margin: var(--half) 0 0 }

/* — cierre: el único campo de color del sistema; el texto va en accent-900 — */
.close { position: relative; z-index: 1; background: var(--color-accent); color: var(--color-accent-900) }
.close .wrap { padding-top: calc(3 * var(--leading)); padding-bottom: calc(3 * var(--leading)) }
.close h3 { font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: clamp(34px, 4.2vw, 56px); line-height: clamp(36px, 4.45vw, 59.4px);
  letter-spacing: -0.015em; margin: 0; margin-left: -0.058em; text-box: trim-both cap alphabetic }
.close .row { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: calc(1.5 * var(--leading)) }
.close .btn-ghost { color: var(--color-accent-900); border-color: var(--color-accent-900) }
.close .btn-ghost:hover { background: color-mix(in srgb, var(--color-accent-900) 12%, transparent) }
footer { position: relative; z-index: 1; background: var(--color-bg) }
footer .wrap { padding: calc(2 * var(--leading)) var(--edge); font-size: 13px; line-height: var(--leading);
  color: color-mix(in srgb, var(--color-text) 70%, transparent) }

/* ═══════════════════════════════════════════════════════════════════════════
   MENÚ MÓVIL — <dialog> nativo: el foco atrapado y el cierre con Esc los da el
   navegador, no hay que programarlos.
   ═══════════════════════════════════════════════════════════════════════ */
.menu { width: 100%; max-width: none; height: 100%; max-height: none; margin: 0;
  padding: 0; border: 0; border-radius: 0; background: var(--color-bg); color: var(--color-text) }
.menu::backdrop { background: var(--color-bg) }
.menu-head { display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) var(--edge); border-bottom: 2px solid var(--color-divider) }
.menu-head .nav-brand { margin: 0 }
.menu-close { width: 44px; height: 44px; padding: 0; color: var(--color-text) }
.menu-nav { display: flex; flex-direction: column; padding: 0 var(--edge) }
.menu-nav a { font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 32px; line-height: 1.12; letter-spacing: -0.015em; color: inherit;
  text-decoration: none; padding: var(--leading) 0 }
.menu-nav a + a { border-top: 2px solid var(--color-divider) }
.menu-cta { margin: var(--leading) var(--edge); width: calc(100% - 2 * var(--edge));
  justify-content: flex-start }
body:has(dialog[open]) { overflow: hidden }

/* ═══════════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════════ */
@media (max-width: 880px) {
  .feature { grid-template-columns: 1fr }
  .f-copy { grid-column: 1 }
}
@media (max-width: 720px) {
  .pieces .grid { grid-template-columns: repeat(2, 1fr) }
  .stats .grid { grid-template-columns: repeat(2, 1fr); justify-content: start }
}
@media (max-width: 480px) {
  .pieces .grid { grid-template-columns: 1fr }
  .nav > a:not(.nav-brand), .nav-cta { display: none }
  .menu-btn { display: inline-flex }
}

/* Áreas táctiles: el mínimo recomendado es 44px y .btn se queda en ~36px.
   Ojo: aquí no se toca `display`, o pisaría el `display:none` de arriba y los
   enlaces reaparecerían en móviles táctiles. */
@media (pointer: coarse) {
  .btn { min-height: 44px }
  .nav a { min-height: 44px }
}

/* En táctil no hay hover real: sin esto el estado se queda pegado tras el tap.
   Se neutraliza aquí en vez de tocar system.css. */
@media (hover: none) {
  .btn-primary:hover { background: var(--color-accent) }
  .btn-secondary:hover { background: transparent }
  .btn-ghost:hover { background: transparent }
  .close .btn-ghost:hover { background: transparent }
  .nav a:hover { color: inherit }
  a:hover { color: var(--color-accent-ink) }
}

/* ═══════════════════════════════════════════════════════════════════════════
   ANIMACIÓN
   ═══════════════════════════════════════════════════════════════════════ */

/* 1. Fade del hero, ligado al scroll. Vía nativa: cero JavaScript. */
@keyframes hero-out {
  0%   { opacity: 1; transform: scale(1);    visibility: visible }
  99%  { visibility: visible }
  100% { opacity: 0; transform: scale(1.06); visibility: hidden }
}
@keyframes hero-out-flat {
  0%   { opacity: 1; visibility: visible }
  99%  { visibility: visible }
  100% { opacity: 0; visibility: hidden }
}
@supports (animation-timeline: scroll()) {
  .hero-bg { animation: hero-out linear both; animation-timeline: scroll(root block);
    animation-range: 0 85vh }
  /* Estricto con reduced-motion: se conserva la opacidad, se descarta el scale */
  @media (prefers-reduced-motion: reduce) {
    .hero-bg { animation-name: hero-out-flat }
  }
}

/* 2. Entrada del titular */
@keyframes line-in {
  from { clip-path: inset(-0.25em 0 100% 0); transform: translateY(0.16em) }
  to   { clip-path: inset(-0.25em 0 -0.25em 0); transform: none }
}
@keyframes fade-up { from { opacity: 0; transform: translateY(10px) } to { opacity: 1; transform: none } }
.js .display .line { animation: line-in 760ms var(--ease) both }
.js .display .line:nth-child(2) { animation-delay: 90ms }
.js .hero .sub { animation: fade-up 640ms 240ms var(--ease) both }
.js .hero .row { animation: fade-up 640ms 340ms var(--ease) both }

/* 3. Reveals al entrar en viewport (IntersectionObserver, una sola vez) */
.js [data-reveal] { opacity: 0; transform: translateY(12px);
  transition: opacity 500ms var(--ease), transform 500ms var(--ease);
  transition-delay: calc(var(--i, 0) * 70ms) }
.js [data-reveal].is-in { opacity: 1; transform: none }

@media (prefers-reduced-motion: reduce) {
  .js .display .line, .js .hero .sub, .js .hero .row { animation: none }
  .js [data-reveal] { opacity: 1; transform: none; transition: none }
}