/* =====================================================================
   404 DESIGN STUDIO — Base: reset, tipografía, layout, utilidades
   ===================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font);
  font-size: var(--t-body);
  line-height: 1.6;
  font-weight: 400;
  letter-spacing: -.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100%;
}

img, svg, canvas, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
hr { border: 0; border-top: 1px solid var(--line); margin: 0; }
figure { margin: 0; }

::selection { background: var(--accent); color: #001318; }

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

/* Lenis / estados globales */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }
html.menu-open, html.menu-open body { overflow: hidden; }

/* Sin JS el contenido debe verse; con JS habilita el revelado */
html:not(.js) [data-reveal] { opacity: 1 !important; transform: none !important; }

/* --------------------------- Tipografía --------------------------- */
h1, h2, h3, h4, h5 {
  margin: 0 0 var(--s4);
  font-family: var(--font);
  font-weight: 500;
  line-height: 1.04;
  letter-spacing: -.03em;
  text-wrap: balance;
}
h1 { font-size: var(--t-h1); }
h2 { font-size: var(--t-h2); }
h3 { font-size: var(--t-h3); line-height: 1.15; letter-spacing: -.02em; }
h4 { font-size: var(--t-h4); line-height: 1.3; letter-spacing: -.012em; }
p { margin: 0 0 var(--s4); }
p:last-child { margin-bottom: 0; }

/* Titulares de gran formato — pieza central de la dirección de arte */
.display {
  font-size: var(--t-display);
  font-weight: 450;
  line-height: .96;
  letter-spacing: -.045em;
}
.mega {
  font-size: clamp(3rem, 1.4rem + 8vw, 10rem);
  font-weight: 500;
  line-height: .9;
  letter-spacing: -.04em;
  font-variant-numeric: tabular-nums;
}
.h-large {
  font-size: var(--t-h1);
  font-weight: 450;
  line-height: 1;
  letter-spacing: -.04em;
}

.lead {
  font-size: var(--t-lead);
  line-height: 1.45;
  letter-spacing: -.015em;
  color: var(--ink);
  max-width: 42ch;
}
.lead--dim { color: var(--ink-dim); }
.muted { color: var(--ink-dim); }
.faint { color: var(--ink-faint); }

/* Etiqueta de sistema — el único uso de monoespaciada */
.label {
  display: inline-flex;
  align-items: center;
  gap: var(--s3);
  font-family: var(--font-mono);
  font-size: var(--t-label);
  font-weight: 400;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin: 0;
}
.label--accent { color: var(--accent); }
.label__dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}
.label__index { color: var(--ink-faint); }

/* ------------------------- Layout primitivo ------------------------ */
.shell {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.shell--wide { max-width: 1760px; }
.shell--narrow { max-width: var(--maxw-text); }

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

.section {
  position: relative;
  padding-block: var(--section-y);
}
/* El contenido va por encima de la capa de nebulosas (z-index 0) */
main { position: relative; z-index: var(--z-content); }
.section--tight { padding-block: clamp(3rem, 1.5rem + 5vw, 6rem); }
.section--band { background: rgba(10, 10, 10, .62); }
.section--edge { border-top: 1px solid var(--line-soft); }

/* Regla horizontal finísima de sistema */
.rule {
  height: 1px;
  width: 100%;
  background: var(--line);
  border: 0;
  transform-origin: left center;
}

/* Cabecera de sección compartida (número + etiqueta + título) */
.sec-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s5);
  padding-bottom: var(--s5);
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--s8);
}

/* --------------------------- 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;
}
.skip-link {
  position: fixed;
  top: -100px; left: var(--gutter);
  z-index: 2000;
  padding: .75rem 1.1rem;
  background: var(--accent);
  color: #001318;
  font-size: var(--t-small);
  font-weight: 500;
  border-radius: 2px;
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus { top: var(--gutter); }

.no-scroll { overflow: hidden; }

/* Espaciado utilitario mínimo (evita estilos en línea en el HTML) */
.mt-3 { margin-top: var(--s3); }
.mt-5 { margin-top: var(--s5); }
.mt-6 { margin-top: var(--s6); }
.mb-6 { margin-bottom: var(--s6); }
.mb-7 { margin-bottom: var(--s7); }
.mb-section { margin-bottom: clamp(3rem, 8vh, 6rem); }
.measure { max-width: 48ch; }
.label--center { justify-content: center; }

/* Reveals controlados por JS; sin JS quedan visibles (regla arriba) */
[data-reveal] { opacity: 0; transform: translateY(18px); }
[data-reveal].reveal-done { opacity: 1; transform: none; }

[data-line] { display: block; }
.line-mask {
  display: block;
  overflow: hidden;
  padding-bottom: .14em;   /* espacio para descendentes (g, y, j) sin recortarlos */
  margin-bottom: -.14em;
}
.line-mask > span { display: block; will-change: transform; }

/* Aparición por clip para imágenes / medios */
[data-clip] { clip-path: inset(0 0 100% 0); }
[data-clip].reveal-done { clip-path: inset(0 0 0 0); }

/* --------------------- prefers-reduced-motion --------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  [data-clip] { clip-path: none !important; }
}