/* ==========================================================================
   VANTAR Dynamics — Base / reset / global layout
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--cream);
  color: var(--ink);
  line-height: 1.5;
  letter-spacing: 0.01em;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior-y: contain;
}

/* Retícula técnica y estela mostaza fijas: acompañan todo el scroll */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: center top;
  /* La retícula ocupa la franja del contenido y se funde en negro hacia los costados */
  --borde-franja: calc(50% - var(--franja) / 2);
  -webkit-mask-image: linear-gradient(90deg, rgba(0,0,0,0) calc(var(--borde-franja) - 300px), rgba(0,0,0,0.1) calc(var(--borde-franja) - 240px), rgba(0,0,0,0.22) calc(var(--borde-franja) - 180px), rgba(0,0,0,0.36) calc(var(--borde-franja) - 120px), rgba(0,0,0,0.5) calc(var(--borde-franja) - 60px), rgba(0,0,0,0.64) calc(var(--borde-franja) + 0px), rgba(0,0,0,0.78) calc(var(--borde-franja) + 60px), rgba(0,0,0,0.9) calc(var(--borde-franja) + 110px), rgba(0,0,0,1) calc(var(--borde-franja) + 160px), rgba(0,0,0,1) calc(100% - var(--borde-franja) - 160px), rgba(0,0,0,0.9) calc(100% - var(--borde-franja) - 110px), rgba(0,0,0,0.78) calc(100% - var(--borde-franja) - 60px), rgba(0,0,0,0.64) calc(100% - var(--borde-franja) + 0px), rgba(0,0,0,0.5) calc(100% - var(--borde-franja) + 60px), rgba(0,0,0,0.36) calc(100% - var(--borde-franja) + 120px), rgba(0,0,0,0.22) calc(100% - var(--borde-franja) + 180px), rgba(0,0,0,0.1) calc(100% - var(--borde-franja) + 240px), rgba(0,0,0,0) calc(100% - var(--borde-franja) + 300px));
          mask-image: linear-gradient(90deg, rgba(0,0,0,0) calc(var(--borde-franja) - 300px), rgba(0,0,0,0.1) calc(var(--borde-franja) - 240px), rgba(0,0,0,0.22) calc(var(--borde-franja) - 180px), rgba(0,0,0,0.36) calc(var(--borde-franja) - 120px), rgba(0,0,0,0.5) calc(var(--borde-franja) - 60px), rgba(0,0,0,0.64) calc(var(--borde-franja) + 0px), rgba(0,0,0,0.78) calc(var(--borde-franja) + 60px), rgba(0,0,0,0.9) calc(var(--borde-franja) + 110px), rgba(0,0,0,1) calc(var(--borde-franja) + 160px), rgba(0,0,0,1) calc(100% - var(--borde-franja) - 160px), rgba(0,0,0,0.9) calc(100% - var(--borde-franja) - 110px), rgba(0,0,0,0.78) calc(100% - var(--borde-franja) - 60px), rgba(0,0,0,0.64) calc(100% - var(--borde-franja) + 0px), rgba(0,0,0,0.5) calc(100% - var(--borde-franja) + 60px), rgba(0,0,0,0.36) calc(100% - var(--borde-franja) + 120px), rgba(0,0,0,0.22) calc(100% - var(--borde-franja) + 180px), rgba(0,0,0,0.1) calc(100% - var(--borde-franja) + 240px), rgba(0,0,0,0) calc(100% - var(--borde-franja) + 300px));
}

/* Grano fino (dithering): evita que las transiciones oscuras se vean en escalones */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxODAiIGhlaWdodD0iMTgwIj48ZmlsdGVyIGlkPSJuIj48ZmVUdXJidWxlbmNlIHR5cGU9ImZyYWN0YWxOb2lzZSIgYmFzZUZyZXF1ZW5jeT0iLjkiIG51bU9jdGF2ZXM9IjIiIHN0aXRjaFRpbGVzPSJzdGl0Y2giLz48ZmVDb2xvck1hdHJpeCB2YWx1ZXM9IjAgMCAwIDAgMSAgMCAwIDAgMCAxICAwIDAgMCAwIDEgIDAgMCAwIC41NSAwIi8+PC9maWx0ZXI+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsdGVyPSJ1cmwoI24pIi8+PC9zdmc+");
  background-size: 180px 180px;
  opacity: 0.045;
}

/* Estela mostaza: fija al centro de la pantalla; estela.js la hace seguir el scroll con inercia */
.estela {
  position: fixed;
  left: 50%;
  top: 0;
  width: min(120vw, 1000px);
  height: min(62vh, 620px);
  z-index: -1;
  pointer-events: none;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(212, 154, 23, 0.17), rgba(212, 154, 23, 0.06) 55%, transparent);
  transform: translate3d(-50%, calc(40vh - 50%), 0); /* sin JS: 40 % de la pantalla */
  will-change: transform;
  animation: estela-latido 12s ease-in-out infinite alternate;
}
@keyframes estela-latido {
  from { opacity: 0.75; }
  to   { opacity: 1; }
}
@media (prefers-reduced-motion: reduce) { .estela { animation: none; } }

img, svg, canvas { display: block; max-width: 100%; }

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

button { cursor: pointer; background: none; border: none; }

a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--purple);
  outline-offset: 2px;
  border-radius: 4px;
}

/* --- App shell --------------------------------------------------------- */
.app {
  position: relative;
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  min-height: 100dvh;
  padding-bottom: calc(var(--nav-h) + var(--safe-b) + 96px); /* espacio para la barra inferior y su velo */
}

.view { display: none; }
/* Cambio de página amortiguado: sale suave y la nueva entra lento, frenando al final */
.view.is-active { display: block; animation: vistaEntra 0.75s cubic-bezier(0.16, 1, 0.3, 1) both; }
.view.saliendo { animation: vistaSale 0.24s cubic-bezier(0.4, 0, 1, 1) forwards; }
@keyframes vistaEntra {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: none; }
}
@keyframes vistaSale {
  to { opacity: 0; transform: translateY(-10px); }
}
@media (prefers-reduced-motion: reduce) {
  .view.is-active, .view.saliendo { animation: none; }
}

.section { padding: 0 var(--s-5); }

/* --- Typography --------------------------------------------------------- */
.display {
  font-family: var(--font-serif);
  font-weight: 600;
  font-optical-sizing: auto;
  line-height: 1.02;
  letter-spacing: -0.02em;
  font-size: clamp(2.7rem, 13vw, 4.1rem);
}

h1, h2, h3 { font-family: var(--font-serif); font-weight: 600; letter-spacing: -0.015em; }
h2 { font-size: clamp(1.7rem, 6.5vw, 2.2rem); line-height: 1.08; }
h3 { font-size: 1.18rem; line-height: 1.2; }

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.lead { color: var(--ink-soft); font-size: 1.02rem; line-height: 1.6; }

.text-grad {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* --- Utilities ---------------------------------------------------------- */
.stack > * + * { margin-top: var(--s-4); }
.muted { color: var(--ink-faint); }
.center { text-align: center; }
.hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}