:root {
  --bg: #0a0a0a;
  --fg: #ededed;
  --mute: #8a8a8a; /* #6b6b6b no alcanza AA (3.7:1) sobre --bg */
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: "Helvetica Neue", "Neue Haas Grotesk", Inter, "Segoe UI", system-ui, Arial, sans-serif;
  color-scheme: dark;
}

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

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
}

.stage {
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: clamp(1rem, 3svh, 1.75rem);
  padding: max(1rem, env(safe-area-inset-top)) 1rem max(1rem, env(safe-area-inset-bottom));
  position: relative;
}

#field {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

h1 {
  margin: 0;
  position: relative;
  font: 600 clamp(3.75rem, 24vw, 13rem)/1 var(--sans);
  letter-spacing: -0.05em;
  padding: 0.12em 0.1em;
  text-align: center;
}

.cycle {
  position: relative;
  margin: 0;
  font: 400 0.75rem/1.4 var(--mono);
  letter-spacing: 0.12em;
  color: var(--mute);
  min-height: 44px;
  display: flex;
  align-items: center;
}

/* Con JS el wordmark lo dibuja el canvas; el h1 sigue en el DOM para lectores de pantalla. */
.js h1 { opacity: 0; }
.js:not(.ready) h1 { animation: fallback 0s 2.5s forwards; }
@keyframes fallback { to { opacity: 1; } }

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

.grain {
  position: fixed;
  inset: -50%;
  pointer-events: none;
  opacity: 0.05;
  z-index: 5;
  will-change: transform;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 0.9s steps(1) infinite;
}
@keyframes grain {
  0%   { transform: translate(0, 0); }
  17%  { transform: translate(-4%, 3%); }
  33%  { transform: translate(3%, -5%); }
  50%  { transform: translate(-6%, -2%); }
  67%  { transform: translate(5%, 4%); }
  83%  { transform: translate(-2%, 6%); }
}

#cur {
  position: fixed;
  left: 0;
  top: 0;
  width: 6px;
  height: 6px;
  margin: -3px 0 0 -3px;
  border-radius: 50%;
  background: #fff;
  mix-blend-mode: difference;
  pointer-events: none;
  z-index: 10;
  opacity: 0;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
#cur.on { opacity: 1; }
#cur.big { transform: scale(5); }
#cur.down { transform: scale(2.5); }
.cur, .cur * { cursor: none !important; }

@media (prefers-reduced-motion: reduce) {
  .grain { animation: none; }
  #cur { transition: none; }
}