/* ============================================================
   REFRI-T — Estética "Dala": void negro, violeta plum,
   tipografía ultra fina y campo de partículas.
   ============================================================ */

:root {
  /* Colors — marca REFRI-T (azul + naranja sobre el void) */
  --color-void: #000000;
  --color-bone: #ffffff;
  --color-ash: #bdbdbd;
  --color-smoke: #9a9a9a;
  --color-plum-voltage: #1e80ff;   /* azul de marca — único color de acción */
  --color-plum-hover:   #1366d6;
  --color-amber-spark:  #f5a623;   /* naranja de marca — chispa/acento */
  --color-lichen:       #20c997;   /* verde "disponible" (solo estado) */

  /* Type */
  --font: 'Space Grotesk', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  /* Spacing */
  --spacing-6: 6px;
  --spacing-12: 12px;
  --spacing-18: 18px;
  --spacing-24: 24px;
  --spacing-30: 30px;
  --spacing-36: 36px;
  --spacing-60: 60px;
  --spacing-96: 96px;
  --spacing-120: 120px;

  /* Layout */
  --page-max-width: 1200px;
  --section-gap: 60px;
  --radius: 24px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; background: var(--color-void); }

body {
  background: transparent;
  color: var(--color-bone);
  font-family: var(--font);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* Campo de partículas — fondo fijo detrás de todo el contenido */
#constellation {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
}

::selection { background: var(--color-plum-voltage); color: #fff; }

/* ---------- Typography primitives ---------- */
.eyebrow {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-bone);
  margin-bottom: var(--spacing-18);
}
.eyebrow--accent { color: var(--color-plum-voltage); }

.display {
  font-weight: 300;
  font-size: clamp(46px, 8.2vw, 96px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--color-bone);
}

.heading-lg {
  font-weight: 300;
  font-size: clamp(34px, 5vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.heading {
  font-weight: 300;
  font-size: clamp(28px, 4vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.body {
  font-weight: 400;
  font-size: 18px;
  line-height: 1.5;
  letter-spacing: 0.012em;
  color: var(--color-ash);
}
.lede {
  font-weight: 400;
  font-size: 18px;
  line-height: 1.5;
  letter-spacing: 0.012em;
  color: var(--color-ash);
}
.muted { color: var(--color-smoke); }

.measure { max-width: 60ch; }
.measure--center { margin-left: auto; margin-right: auto; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 14px 20px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--color-plum-voltage);
  color: var(--color-bone);
}
.btn--primary:hover { background: var(--color-plum-hover); }

.btn--ghost {
  background: transparent;
  color: var(--color-bone);
  border-color: rgba(255, 255, 255, 0.22);
}
.btn--ghost:hover { border-color: var(--color-amber-spark); color: var(--color-amber-spark); }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 16px 24px;
  transition: background 0.3s ease, backdrop-filter 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}
.nav--scrolled {
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(14px);
  border-bottom-color: rgba(255, 255, 255, 0.07);
}
.nav__inner {
  max-width: var(--page-max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--spacing-24);
}

.logo { display: inline-flex; align-items: center; gap: 9px; }
.logo__mark { color: var(--color-plum-voltage); display: inline-flex; }
.logo__word {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-bone);
}
.logo__t { color: var(--color-amber-spark); }

.nav__links {
  display: flex;
  gap: var(--spacing-30);
  margin-left: auto;
}
.nav__links a {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-smoke);
  transition: color 0.18s ease;
}
.nav__links a:hover { color: var(--color-bone); }

.nav__cta { margin-left: var(--spacing-12); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
}
.nav__toggle span {
  width: 24px; height: 2px;
  background: var(--color-bone);
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   SECTIONS
   ============================================================ */
.section {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: var(--spacing-96) 24px;
}
.block .heading-lg, .block .heading { margin-bottom: var(--spacing-30); }
.block .body { margin-top: 0; }
.block--center { text-align: center; }
.block--center .eyebrow { display: block; }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 140px;
  padding-bottom: var(--spacing-60);
  max-width: 100%;
}
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--page-max-width);
  margin: 0 auto;
  width: 100%;
  padding: 0 24px;
}
.hero__text { max-width: 620px; }
.eyebrow { display: inline-block; }
.hero .display { margin-bottom: var(--spacing-30); }
.hero .lede { max-width: 50ch; margin-bottom: var(--spacing-36); }

.hero__actions {
  display: flex;
  gap: var(--spacing-12);
  flex-wrap: wrap;
}

.hero__status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: var(--spacing-36);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--color-smoke);
}
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--color-lichen);
  box-shadow: 0 0 0 0 rgba(21, 132, 110, 0.6);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(21, 132, 110, 0.55); }
  70% { box-shadow: 0 0 0 10px rgba(21, 132, 110, 0); }
  100% { box-shadow: 0 0 0 0 rgba(21, 132, 110, 0); }
}

/* ---------- SOLUTION ---------- */
.solution { text-align: center; display: flex; flex-direction: column; align-items: center; }
.icon-mark { color: var(--color-lichen); margin-bottom: var(--spacing-36); }
.solution__text { margin-bottom: var(--spacing-60); }
.solution .heading { margin: var(--spacing-18) 0 var(--spacing-24); }

.stats {
  display: flex;
  gap: var(--spacing-60);
  flex-wrap: wrap;
  justify-content: center;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  padding-top: var(--spacing-60);
  width: 100%;
}
.stat { display: flex; flex-direction: column; gap: 6px; min-width: 160px; }
.stat__num {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 300;
  letter-spacing: -0.04em;
  color: var(--color-bone);
  line-height: 1;
}
.stat__num small { font-size: 0.34em; color: var(--color-smoke); margin-left: 4px; letter-spacing: 0; }
.stat__label { font-size: 13px; color: var(--color-smoke); letter-spacing: 0.02em; }

/* ---------- CARDS ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-18);
  margin-top: var(--spacing-60);
}
.card {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: var(--spacing-30);
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.card:hover { border-color: rgba(30, 128, 255, 0.55); transform: translateY(-3px); }
.card__icon {
  display: inline-flex;
  color: var(--color-plum-voltage);
  margin-bottom: var(--spacing-24);
}
.card__title {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: var(--spacing-12);
}
.card__body {
  font-size: 15px;
  line-height: 1.55;
  color: var(--color-smoke);
  letter-spacing: 0.01em;
}

/* ---------- EQUIPO (troops escalonado, estilo "Our Troops") ---------- */
.troops {
  margin-top: var(--spacing-96);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-18);
  align-items: start;
  text-align: left;
}
.troop { position: relative; }
/* escalonado tipo onda — alturas distintas como la referencia */
.troops .troop:nth-child(2) { margin-top: 58px; }
.troops .troop:nth-child(3) { margin-top: 16px; }
.troops .troop:nth-child(4) { margin-top: 66px; }
.troops .troop:nth-child(5) { margin-top: 30px; }

.troop__label { min-height: 54px; }
.troop__name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-plum-voltage);
  letter-spacing: -0.01em;
}
.troop--lead .troop__name { color: var(--color-amber-spark); }
.troop__role { font-size: 13px; color: var(--color-smoke); letter-spacing: 0.02em; margin-top: 3px; }

.troop__arrow {
  width: 54px;
  height: 42px;
  color: var(--color-smoke);
  display: block;
  margin: 2px 0 -4px 12px;
}
.troop__arrow--left { transform: scaleX(-1); margin-left: auto; margin-right: 12px; }
.troop__curve { stroke-dasharray: 3 5; }

.troop__photo {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.troop__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.35) contrast(1.03);
  transition: filter 0.35s ease, transform 0.45s ease;
}
.troop:hover .troop__photo { transform: translateY(-7px); border-color: rgba(30, 128, 255, 0.5); }
.troop:hover .troop__photo img { filter: grayscale(0) contrast(1.05); transform: scale(1.04); }
.troop--lead .troop__photo { border-color: rgba(245, 166, 35, 0.45); }
.troop--lead:hover .troop__photo { border-color: rgba(245, 166, 35, 0.85); }

@media (max-width: 900px) {
  .troops { grid-template-columns: repeat(3, 1fr); }
  .troops .troop { margin-top: 0; }
}
@media (max-width: 560px) {
  .troops { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-12); }
  .troop__arrow { display: none; }
  .troop__label { min-height: 0; margin-bottom: var(--spacing-12); }
}

.team__arrow {
  width: 46px; height: 46px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: transparent;
  color: var(--color-bone);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.18s ease, color 0.18s ease;
}
.team__arrow:hover { border-color: var(--color-plum-voltage); color: var(--color-plum-voltage); }

/* ---------- CHIPS ---------- */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-12);
  justify-content: center;
  margin-top: var(--spacing-36);
}
.chips span {
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  padding: 8px 18px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--color-ash);
}

/* ---------- BRANDS ---------- */
.brands {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-36) var(--spacing-60);
  justify-content: center;
  align-items: center;
  margin-top: var(--spacing-60);
}
.brands span {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-smoke);
  opacity: 0.65;
  transition: opacity 0.2s ease, color 0.2s ease;
}
.brands span:hover { opacity: 1; color: var(--color-bone); }

/* ---------- CARRUSEL GENÉRICO ---------- */
.carousel { margin-top: var(--spacing-60); position: relative; }
.carousel__track {
  display: flex;
  gap: var(--spacing-18);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding-bottom: 6px;
}
.carousel__track::-webkit-scrollbar { display: none; }
.carousel__nav { display: flex; gap: var(--spacing-12); margin-top: var(--spacing-30); }

/* ---------- ANTES / DESPUÉS (slider) ---------- */
.ba-slide {
  flex: 0 0 clamp(280px, 40vw, 460px);
  scroll-snap-align: start;
}
.ba {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  user-select: none;
  touch-action: none;
  cursor: ew-resize;
}
.ba__img,
.ba__before img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none;
}
.ba__before {
  position: absolute;
  inset: 0;
  clip-path: inset(0 calc(100% - var(--pos, 50%)) 0 0);
}
.ba__divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--pos, 50%);
  width: 2px;
  background: var(--color-bone);
  pointer-events: none;
}
.ba__handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.85);
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--color-bone);
}
.ba__tag {
  position: absolute;
  bottom: 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-bone);
  background: rgba(0, 0, 0, 0.55);
  padding: 5px 10px;
  border-radius: var(--radius);
  pointer-events: none;
}
.ba__tag--before { left: 12px; }
.ba__tag--after { right: 12px; }
.ba__range {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: ew-resize;
}
.ba-slide__cap {
  margin-top: var(--spacing-18);
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-smoke);
  letter-spacing: 0.01em;
}

/* ---------- GALERÍA ---------- */
.gallery__item {
  flex: 0 0 clamp(220px, 26vw, 300px);
  scroll-snap-align: start;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(1.03);
}

/* ---------- CONTACT ---------- */
.contact .heading-lg { margin: var(--spacing-18) 0 var(--spacing-30); }
.contact .body { margin-bottom: var(--spacing-36); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: var(--spacing-60);
}
.footer__inner {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: var(--spacing-60) 24px var(--spacing-36);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-36);
  justify-content: space-between;
  align-items: flex-start;
}
.footer__logo { width: 168px; height: auto; }
.footer__tag { font-size: 13px; color: var(--color-smoke); margin-top: var(--spacing-12); letter-spacing: 0.02em; }
.footer__links { display: flex; flex-direction: column; gap: var(--spacing-12); }
.footer__links a { font-size: 14px; color: var(--color-smoke); transition: color 0.18s ease; }
.footer__links a:hover { color: var(--color-bone); }
.footer__social { display: flex; gap: var(--spacing-18); }
.footer__social a {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--color-ash);
  transition: border-color 0.18s ease, color 0.18s ease;
}
.footer__social a:hover { border-color: var(--color-plum-voltage); color: var(--color-bone); }

.footer__bottom {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: var(--spacing-24) 24px var(--spacing-36);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-12);
  font-size: 12px;
  color: var(--color-smoke);
  letter-spacing: 0.03em;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .stats { gap: var(--spacing-36); }
}

@media (max-width: 720px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; }

  .nav--open .nav__links {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(0, 0, 0, 0.96);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    margin: 0;
    padding: var(--spacing-12) 24px var(--spacing-24);
  }
  .nav--open .nav__links a { padding: 14px 0; font-size: 15px; border-bottom: 1px solid rgba(255,255,255,0.05); }
  .nav--open .nav__cta {
    display: inline-flex;
    margin: var(--spacing-18) 24px 0;
    position: absolute; top: 100%; left: 0; right: 0;
    transform: translateY(220px);
  }

  .section { padding: var(--spacing-60) 20px; }
  .hero { min-height: auto; padding-top: 120px; }
  .cards { grid-template-columns: 1fr; }
  .stats { flex-direction: column; align-items: center; text-align: center; gap: var(--spacing-30); }
  .footer__inner { flex-direction: column; }
  .ba-slide { flex-basis: 82vw; }
  .gallery__item { flex-basis: 72vw; }
}