/* ═══════════════════════════════════════════════════════════════════════════
   NX600 · «Así se usa» y «Haz la cuenta» (2-oct-2026, rama mejoras-v2)
   ─────────────────────────────────────────────────────────────────────────
   La pieza propia del NX600 (como la pasarela de la portada): el cuadro se
   queda fijo y al bajar pasan los tres pasos de la ficha técnica de FUJIFILM
   («Operación en tres etapas»): la laminilla entra a su soporte, el tubo a su
   portatubo, se ve qué pasa ADENTRO de la laminilla (las cuatro capas, el
   mismo corte del folleto) y se oprime INICIO. La lógica en /js/nx-pieza.js.

   Las fotos son las oficiales (tapa abierta y frente en configuración
   humana); la laminilla, el tubo y el corte son ilustraciones, no fotos.

   Sin JavaScript o con «menos movimiento»: los tres pasos en lista y la
   foto del interior, sin cuadro fijo.
   ═══════════════════════════════════════════════════════════════════════════ */

.nxp { position: relative; padding: 0; background: linear-gradient(180deg, #F3F7FA 0%, #fff 100%); }
.nxp__fijo { position: relative; }
.nxp__rejilla {
  width: 100%; display: grid; gap: 48px; align-items: center;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  padding: 56px 24px;
}
.nxp__pasos { list-style: none; margin: 6px 0 0; padding: 0; display: grid; gap: 10px; }
.nxp__paso {
  display: grid; grid-template-columns: 44px 1fr; gap: 14px; align-items: start;
  padding: 16px 18px; border-radius: 16px; border: 1px solid transparent;
  transition: background .4s ease, border-color .4s ease, box-shadow .4s ease, opacity .4s ease;
}
.nxp__paso b {
  width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center;
  background: #E6EEF3; color: #0F2940; font-weight: 800; font-size: 17px;
  transition: background .4s ease, color .4s ease;
}
.nxp__paso h3 { margin: 3px 0 4px; font-size: 19px; font-weight: 800; color: #0F2940; letter-spacing: -.01em; }
.nxp__paso p { margin: 0; font-size: 15px; line-height: 1.55; color: #4A5A6B; }
.nxp__fuente { margin: 16px 4px 0; font-size: 12.5px; line-height: 1.5; color: #64748B; }

/* El escenario: cuadrado, con la luz al centro. */
.nxp__escena {
  position: relative; width: min(100%, 620px); aspect-ratio: 1 / 1; margin: 0 auto;
  border-radius: 28px; overflow: hidden; isolation: isolate;
  background: radial-gradient(105% 90% at 50% 44%, #fff 38%, #E8F0F4 100%);
  box-shadow: inset 0 0 0 1px #E1EAF0;
}
.nxp__capa { position: absolute; inset: 0; }

/* 1 · El interior con la tapa abierta. Las marcas (soporte de la laminilla,
   portatubo) van en % de ESTA caja, que tiene la proporción de la foto. */
.nxp__foto {
  position: absolute; left: 50%; top: 50%; height: 90%; aspect-ratio: 545 / 660;
  translate: -50% -50%; transform-origin: 33% 76%;
}
.nxp__foto img { display: block; width: 100%; height: 100%; }
.nxp__lam, .nxp__tubo { position: absolute; pointer-events: none; }
/* La laminilla entra de canto al soporte (x 33 %, y 76 % de la foto). */
.nxp__lam { left: 33%; top: 76%; width: 17%; translate: -50% -100%; filter: drop-shadow(0 10px 14px rgba(15, 41, 64, .22)); }
.nxp__tubo { left: 66.4%; top: 76.5%; width: 7%; translate: -50% -100%; filter: drop-shadow(0 8px 10px rgba(15, 41, 64, .18)); }
.nxp__lam svg, .nxp__tubo svg { display: block; width: 100%; height: auto; }
.nxp__chip {
  position: absolute; z-index: 2; padding: 7px 12px; border-radius: 999px;
  background: rgba(15, 41, 64, .9); color: #fff; font-size: 12.5px; font-weight: 700; letter-spacing: .01em;
  white-space: nowrap; box-shadow: 0 8px 20px rgba(15, 41, 64, .25);
}
.nxp__chip--lam { left: 8%; top: 8%; }
.nxp__chip--tubo { right: 8%; top: 8%; }

/* 2 · Adentro de la laminilla: el corte del folleto de FUJIFILM, de lado. */
.nxp__corte { display: grid; place-items: center; opacity: 0; }
.nxp__pila { position: relative; width: 78%; height: 62%; }
.nxp__gota {
  position: absolute; left: 30%; top: -2%; width: 26px; height: 26px; margin-left: -13px;
  background: radial-gradient(circle at 35% 35%, #FFF6C9, #F2C94C 70%);
  border-radius: 50% 0 50% 50%; transform: rotate(-45deg); opacity: 0;   /* el JS escribe translateY(…) rotate(-45deg): la rotación va DESPUÉS de bajar */
  box-shadow: 0 4px 10px rgba(180, 140, 30, .3);
}
.nxp__gota-lbl { position: absolute; left: calc(30% + 22px); top: -4%; font-size: 13px; font-weight: 800; color: #8A6A10; opacity: 0; white-space: nowrap; }
.nxp__lamina {
  position: absolute; left: 0; width: 60%; height: 11%;
  border-radius: 6px; box-shadow: 0 6px 16px rgba(15, 41, 64, .1);
}
.nxp__lamina::after {   /* la gota que se reparte por la capa */
  content: ''; position: absolute; inset: 0; border-radius: inherit;
  background: radial-gradient(60% 140% at 50% 50%, rgba(242, 201, 76, .75), rgba(242, 201, 76, 0) 70%);
  transform-origin: 50% 50%; scale: var(--moja, 0) 1; opacity: var(--moja, 0);
}
.nxp__lamina--1 { background: repeating-linear-gradient(90deg, #fff 0 6px, #EEF3F6 6px 8px); border: 1px solid #D6E0E7; }
.nxp__lamina--2 { background: #FAFBFC; border: 1px solid #D6E0E7; }
.nxp__lamina--3 { background: linear-gradient(90deg, #F5E3A0, #F3D984); border: 1px solid #E2C46A; }
.nxp__lamina--3.reacciona { background: linear-gradient(90deg, #8FD3C9, #5BBFB2); border-color: #46A99C; transition: background .6s ease, border-color .6s ease; }
.nxp__lamina--4 { background: linear-gradient(180deg, rgba(200, 228, 240, .7), rgba(170, 210, 228, .55)); border: 1px solid #B8D2DF; }
.nxp__etq {
  position: absolute; left: 66%; display: flex; align-items: center; gap: 10px;
  font-size: 13.5px; line-height: 1.3; color: #0F2940; opacity: 0;
}
.nxp__etq::before { content: ''; width: 28px; height: 1.5px; background: #9DB3C2; flex: none; margin-left: -34px; }
.nxp__etq b { display: block; font-weight: 800; }
.nxp__etq small { display: block; color: #5B6B7F; font-size: 12.5px; }
/* Posición de reposo (sin JS o con «menos movimiento»): las capas separadas. */
.nxp__lamina--1, .nxp__etq--1 { top: 10%; }
.nxp__lamina--2, .nxp__etq--2 { top: 32%; }
.nxp__lamina--3, .nxp__etq--3 { top: 54%; }
.nxp__lamina--4, .nxp__etq--4 { top: 76%; }
.nxp__lector {
  position: absolute; left: 30%; bottom: -6%; width: 64px; margin-left: -32px; height: 22%;
  background: linear-gradient(0deg, rgba(94, 234, 212, 0), rgba(94, 234, 212, .55));
  clip-path: polygon(38% 100%, 62% 100%, 100% 0, 0 0); opacity: 0;
}
.nxp__lector-lbl { position: absolute; left: 30%; bottom: -14%; translate: -50% 0; font-size: 12.5px; font-weight: 700; color: #17707F; white-space: nowrap; opacity: 0; }

/* 3 · El equipo de frente: se oprime INICIO. */
.nxp__frente { display: grid; place-items: center; opacity: 0; }
.nxp__frente-caja { position: relative; width: 86%; aspect-ratio: 608 / 473; }
.nxp__frente-caja img { display: block; width: 100%; height: 100%; }
.nxp__pulso {
  position: absolute; left: 33.7%; top: 32.5%; width: 9%; aspect-ratio: 1; translate: -50% -50%;
  border-radius: 50%; border: 3px solid #5EEAD4; box-shadow: 0 0 22px rgba(94, 234, 212, .7); opacity: 0;
}
.nxp__datos { position: absolute; left: 0; right: 0; bottom: 7%; display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; opacity: 0; }
.nxp__dato { padding: 10px 14px; border-radius: 14px; background: #fff; box-shadow: 0 10px 26px rgba(15, 41, 64, .12); text-align: center; }
.nxp__dato b { display: block; font-size: 22px; font-weight: 800; color: #0F2940; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.nxp__dato span { font-size: 12px; color: #5B6B7F; }

/* ── Vivo: el cuadro se queda fijo y el scroll mueve la escena ────────── */
.nxp--vivo { height: 360vh; }
.nxp--vivo .nxp__fijo {
  position: sticky; top: 0; height: 100vh; height: 100svh;
  display: flex; align-items: center; overflow: hidden;
  padding-top: var(--nxp-cab, 0px); box-sizing: border-box;
}
.nxp--vivo .nxp__rejilla { padding-top: 16px; padding-bottom: 16px; }
.nxp--vivo .nxp__escena { width: min(100%, 620px, calc(100svh - var(--nxp-cab, 0px) - 56px)); }
.nxp--vivo .nxp__paso { opacity: .42; }
.nxp--vivo .nxp__paso.on { opacity: 1; background: #fff; border-color: #DCE7EE; box-shadow: 0 10px 30px rgba(15, 41, 64, .08); }
.nxp--vivo .nxp__paso.on b { background: #0F2940; color: #5EEAD4; }

/* Sin vivo (sin JS, menos movimiento): todo en su lugar final, en reposo. */
.nxp:not(.nxp--vivo) .nxp__lam { translate: -50% -100%; }
.nxp:not(.nxp--vivo) .nxp__chip { display: none; }

@media (max-width: 899px) {
  .nxp__rejilla { grid-template-columns: 1fr; gap: 18px; padding: 40px 20px; }
  .nxp--vivo .nxp__rejilla { padding: 10px 16px; gap: 12px; align-content: start; }
  .nxp--vivo .nxp__escena { order: -1; width: min(100%, 46svh); border-radius: 22px; }
  .nxp--vivo .nxp__texto .section-tag { display: none; }
  .nxp--vivo .nxp__texto .nx-section-title { font-size: 22px; margin-bottom: 6px; }
  .nxp--vivo .nxp__paso:not(.on) { display: none; }
  .nxp--vivo .nxp__paso { padding: 12px 14px; }
  .nxp--vivo .nxp__fuente { display: none; }
  .nxp__etq { font-size: 12px; left: 64%; }
  .nxp__etq small { display: none; }
  .nxp__chip { font-size: 11.5px; padding: 6px 10px; }
  .nxp__dato b { font-size: 18px; }
}

/* ═══ Haz la cuenta ═══════════════════════════════════════════════════════ */
.nxc { background: #fff; }
.nxc__caja {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 0;
  border-radius: 24px; overflow: hidden; border: 1px solid #DCE7EE;
  box-shadow: 0 18px 50px rgba(15, 41, 64, .08);
}
.nxc__entrada { padding: 30px 30px 26px; background: #F6FAFC; display: grid; gap: 22px; align-content: start; }
.nxc__campo label, .nxc__campo .nxc__lbl { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; font-size: 14.5px; font-weight: 700; color: #0F2940; margin-bottom: 10px; }
.nxc__campo output { font-size: 22px; font-weight: 800; color: #0F2940; font-variant-numeric: tabular-nums; letter-spacing: -.02em; }
.nxc__campo input[type="range"] { width: 100%; accent-color: #2D7EA8; height: 28px; }
.nxc__escala { display: flex; justify-content: space-between; font-size: 12px; color: #64748B; margin-top: 2px; }
.nxc__dias { display: flex; gap: 8px; flex-wrap: wrap; }
.nxc__dias label { display: inline-flex; margin: 0; font-weight: 700; }
.nxc__dias input { position: absolute; opacity: 0; pointer-events: none; }
.nxc__dias span {
  display: inline-grid; place-items: center; min-width: 54px; min-height: 44px; padding: 0 12px; border-radius: 12px;
  border: 1.5px solid #CBD8E2; background: #fff; color: #0F2940; font-size: 15px; cursor: pointer;
  transition: background .2s ease, border-color .2s ease, color .2s ease;
}
.nxc__dias input:checked + span { background: #0F2940; border-color: #0F2940; color: #fff; }
.nxc__dias input:focus-visible + span { outline: 3px solid #4AB8C8; outline-offset: 2px; }
.nxc__pesos { display: flex; align-items: center; gap: 8px; border: 1.5px solid #CBD8E2; border-radius: 12px; background: #fff; padding: 0 14px; min-height: 52px; }
.nxc__pesos:focus-within { border-color: #2D7EA8; box-shadow: 0 0 0 3px rgba(45, 126, 168, .18); }
.nxc__pesos b { font-size: 18px; color: #5B6B7F; }
.nxc__pesos input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; font: inherit; font-size: 18px; font-weight: 700; color: #0F2940; height: 48px; }
.nxc__ayuda { margin: 8px 0 0; font-size: 12.5px; line-height: 1.5; color: #64748B; }
.nxc__salida { padding: 30px; display: grid; gap: 14px; align-content: start; }
.nxc__fila { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding-bottom: 12px; border-bottom: 1px solid #EEF3F6; }
.nxc__fila span { font-size: 14.5px; color: #4A5A6B; }
.nxc__fila b { font-size: 21px; font-weight: 800; color: #0F2940; font-variant-numeric: tabular-nums; letter-spacing: -.02em; text-align: right; }
.nxc__fila small { display: block; font-size: 11.5px; font-weight: 600; color: #64748B; letter-spacing: 0; }
.nxc__veredicto { margin: 4px 0 0; padding: 16px 18px; border-radius: 16px; background: #ECFDF5; color: #14532D; font-size: 15px; line-height: 1.55; }
.nxc__veredicto--neutro { background: #F1F5F9; color: #334155; }
.nxc__veredicto b { font-weight: 800; }
.nxc__wa {
  display: flex; align-items: center; justify-content: center; gap: 10px; min-height: 54px; margin-top: 4px;
  border-radius: 12px; background: #25D366; color: #0F2940; font-size: 16px; font-weight: 800; text-decoration: none;
  box-shadow: 0 8px 22px rgba(37, 211, 102, .3); transition: background .2s ease, transform .2s ease;
}
.nxc__wa:hover { background: #1FAE57; transform: translateY(-1px); }
.nxc__wa:focus-visible { outline: 3px solid #4AB8C8; outline-offset: 2px; }
.nxc__wa svg { width: 20px; height: 20px; flex: none; }
.nxc__nota { margin: 2px 0 0; font-size: 12.5px; line-height: 1.55; color: #64748B; }
@media (max-width: 899px) {
  .nxc__caja { grid-template-columns: 1fr; }
  .nxc__entrada, .nxc__salida { padding: 22px 18px; }
}