/* ==========================================================================
   base.css — reset, fuentes, escala tipográfica, layout y capas de fondo.
   ========================================================================== */

/* --- Fuentes (variables: un archivo cubre todos los pesos) -------------- */
@font-face {
  font-family: "Geist";
  src: url("https://cdn.jsdelivr.net/npm/geist@1.7.2/dist/fonts/geist-sans/Geist-Variable.woff2") format("woff2-variations");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Geist Mono";
  src: url("https://cdn.jsdelivr.net/npm/geist@1.7.2/dist/fonts/geist-mono/GeistMono-Variable.woff2") format("woff2-variations");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

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

* { margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: auto;          /* Lenis se encarga */
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background var(--t-slow) var(--ease), color var(--t-slow) var(--ease);
}

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

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

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

/* --- Escala tipográfica -------------------------------------------------
   Peso 400 en el display con tracking -.03em: ese es el carácter de la
   referencia. Subirlo a 600 lo vuelve pesado y genérico.
   ------------------------------------------------------------------------ */
.font-s1,
.font-h1,
.font-h2,
.font-h3 {
  font-weight: 400;
  letter-spacing: -.03em;
  text-wrap: balance;
  overflow-wrap: break-word;
}

.font-s1 { font-size: 8rem;    line-height: 1;   }
.font-h1 { font-size: 6rem;    line-height: 1;   }
.font-h2 { font-size: 4rem;    line-height: 1.1; }
.font-h3 { font-size: 2.5rem;  line-height: 1.2; }
.font-h4 { font-size: 1.75rem; line-height: 1.3; font-weight: 400; letter-spacing: -.02em; }

.font-body-xl { font-size: 1.5rem;   line-height: 1.4; letter-spacing: -.02em; }
.font-body-l  { font-size: 1.25rem;  line-height: 1.5; letter-spacing: -.01em; }
.font-body    { font-size: 1rem;     line-height: 1.6; }
.font-body-s  { font-size: .875rem;  line-height: 1.6; }

@media (max-width: 64rem) {
  .font-s1 { font-size: 3rem;    }
  .font-h1 { font-size: 2.5rem;  }
  .font-h2 { font-size: 1.875rem; line-height: 1.2; }
  .font-h3 { font-size: 1.5rem;  }
  .font-h4 { font-size: 1.25rem; }
  .font-body-xl { font-size: 1.125rem; }
  .font-body-l  { font-size: 1rem; }
}

/* --- Caption mono con bullet — firma visual de la referencia ------------ */
.caption {
  display: inline-flex;
  align-items: center;
  gap: .625rem;
  font-family: "Geist Mono", ui-monospace, SFMono-Regular, monospace;
  font-size: max(12px, .875rem);
  letter-spacing: -.02em;
  line-height: 1;
  color: var(--muted);
}

.caption::before {
  content: "";
  width: .375rem;
  height: .375rem;
  border-radius: 50%;
  background: currentColor;
  opacity: .55;
  flex: none;
}

.caption--plain::before { display: none; }

/* --- Layout -------------------------------------------------------------- */
.container {
  width: calc(100% - var(--gutter) * 2);
  max-width: var(--container);
  margin-inline: auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 0 var(--grid-gap);
}

@media (max-width: 64rem) {
  .grid { grid-template-columns: repeat(4, 1fr); }
}

.section { padding-block: var(--section-y); position: relative; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* --- Capas de fondo: gradiente animado + glow difuminado + grano -------- */
.backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--z-bg);
  pointer-events: none;
  overflow: hidden;
}

.backdrop__gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(330deg, var(--grad-1), var(--grad-2), var(--grad-3), var(--grad-4));
  background-size: 400% 400%;
  animation: gradient 18s ease infinite;
}

/* El glow es el "blur" de la referencia: aparece despacio, nunca de golpe. */
.backdrop__glow {
  position: absolute;
  left: 50%;
  top: -20vh;
  width: 90vw;
  height: 90vh;
  translate: -50% 0;
  background: radial-gradient(circle at 50% 50%, var(--glow) 0%, transparent 62%);
  filter: blur(50px);
  opacity: 0;
  transition: opacity 5s ease;
}

.is-ready .backdrop__glow { opacity: var(--glow-opacity); }

.backdrop__noise {
  position: absolute;
  inset: -200%;
  width: 500%;
  height: 500%;
  opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22160%22%20height%3D%22160%22%3E%3Cfilter%20id%3D%22n%22%3E%3CfeTurbulence%20type%3D%22fractalNoise%22%20baseFrequency%3D%22.85%22%20numOctaves%3D%223%22%2F%3E%3C%2Ffilter%3E%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20filter%3D%22url(%23n)%22%2F%3E%3C%2Fsvg%3E");
  animation: noise 1s steps(1) infinite;
}

@keyframes gradient {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes noise {
  0%   { transform: translate3d(0, 9rem, 0); }
  10%  { transform: translate3d(-1rem, -4rem, 0); }
  20%  { transform: translate3d(-8rem, 2rem, 0); }
  30%  { transform: translate3d(9rem, -9rem, 0); }
  40%  { transform: translate3d(-2rem, 7rem, 0); }
  50%  { transform: translate3d(-9rem, -4rem, 0); }
  60%  { transform: translate3d(2rem, 6rem, 0); }
  70%  { transform: translate3d(7rem, -8rem, 0); }
  80%  { transform: translate3d(-9rem, 1rem, 0); }
  90%  { transform: translate3d(6rem, -5rem, 0); }
  100% { transform: translate3d(-7rem, 0, 0); }
}

/* --- Revelado de líneas con máscara -------------------------------------
   El margin negativo compensado con padding evita que overflow:hidden
   recorte descendentes (g, y, p) y acentos (á, ñ).
   ------------------------------------------------------------------------ */
.line-mask {
  overflow: hidden;
  margin-block: -.625rem;
  padding-block: .625rem;
}

/* Estado inicial de los bloques que entran con fade-up. */
[data-reveal] {
  opacity: 0;
  transform: translateY(2rem);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
  transition: opacity var(--t-slow) var(--ease), transform .8s var(--ease);
}

/* --- Accesibilidad: sin movimiento --------------------------------------
   Guarda real: desactiva fondo, grano, parallax y revelados.
   ------------------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .backdrop__noise,
  .backdrop__gradient { animation: none; }
  .backdrop__glow { opacity: var(--glow-opacity); transition: none; }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  .line-mask { overflow: visible; }
}