/* ==========================================================================
   Base — reset, tipografía, layout primitives
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 88px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  position: relative;
}

/* Rejilla y atmósfera de fondo (futurista, sutil) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 600px at 78% -8%, rgba(46, 232, 105, .10), transparent 60%),
    radial-gradient(700px 500px at 6% 8%, rgba(46, 232, 105, .06), transparent 55%);
  pointer-events: none;
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(242, 242, 242, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 242, 242, .035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 100% 70% at 50% 0%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 100% 70% at 50% 0%, #000 30%, transparent 80%);
  pointer-events: none;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; }
input, textarea, select { font: inherit; color: inherit; }
ul { list-style: none; padding: 0; }

::selection { background: var(--brand); color: var(--brand-ink); }

:focus-visible { outline: 2px solid var(--brand); outline-offset: 3px; border-radius: 4px; }

/* Tipografía */
h1, h2, h3, .display, .eyebrow, .brand__mark, .num {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -.01em;
  line-height: 1.04;
  color: var(--ink);
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-family: var(--font-body); font-weight: 700; font-size: var(--fs-h3); line-height: 1.25; letter-spacing: 0; }
p { color: var(--ink-soft); }
strong { color: var(--ink); font-weight: 700; }

.display { font-size: var(--fs-display); line-height: .98; letter-spacing: -.02em; }
.lead { font-size: var(--fs-lead); color: var(--ink-soft); line-height: 1.55; }
.text-brand { color: var(--brand); }
.text-ink { color: var(--ink); }

.eyebrow {
  display: inline-flex; align-items: center; gap: .55em;
  font-size: var(--fs-xs);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--brand);
}
.eyebrow::before {
  content: ""; width: 26px; height: 1px; background: var(--brand); opacity: .8;
}
.eyebrow.is-center::before { display: none; }

/* Layout */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad-x); }
.container--narrow { max-width: var(--maxw-narrow); }
.section { padding-block: var(--section-y); position: relative; }
.section--deep { background: var(--bg-deep); }
/* Ritmo vertical uniforme: 20px entre eyebrow, título, párrafo y botón de cada bloque. */
.section-head { max-width: 720px; margin-bottom: clamp(36px, 5vw, 60px); display: grid; gap: 20px; justify-items: start; }
.section-head.is-center { margin-inline: auto; text-align: center; justify-items: center; }
.stack-20 { display: grid; gap: 20px; justify-items: start; align-content: start; }
.stack-20.is-center { justify-items: center; text-align: center; }

.grid { display: grid; gap: var(--s-3); }
.muted { color: var(--ink-mute); }

/* Animaciones de aparición */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform;
}
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal="left"] { transform: translateX(-30px); }
[data-reveal="right"] { transform: translateX(30px); }
[data-reveal="scale"] { transform: scale(.94); }
[data-reveal="left"].in, [data-reveal="right"].in, [data-reveal="scale"].in { transform: none; }
[data-parallax] { will-change: transform; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1 !important; transform: none !important; transition: none !important; }
  body::before, body::after { display: none; }
}

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 1000;
  background: var(--brand); color: var(--brand-ink); padding: 10px 16px; border-radius: 0 0 var(--r-sm) 0;
  font-weight: 600;
}
.skip-link:focus { left: 0; }

/* Utilidades */
.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; }
.dts-ico { width: 24px; height: 24px; flex: none; }
.text-center { text-align: center; }
.mt-2 { margin-top: var(--s-2); } .mt-3 { margin-top: var(--s-3); } .mt-4 { margin-top: var(--s-4); }