@font-face {
  font-family: 'Anton';
  src: url('/fonts/anton-latin.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: block;
}

:root {
  --ink: #ffffff;
  --paper: #000000;
  --lens: clamp(150px, 34vmin, 460px);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--paper);
}

body {
  overflow: hidden;
  color: var(--ink);
  font-family: 'Anton', 'Haettenschweiler', 'Arial Narrow', Impact, sans-serif;
  -webkit-font-smoothing: antialiased;
  cursor: crosshair;
}

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

/* Own stacking context so the lens only inverts what is inside. */
.sheet {
  position: relative;
  isolation: isolate;
  height: 100dvh;
  min-height: 100vh;
  background: var(--paper);
  overflow: hidden;
}

.stage {
  display: grid;
  place-items: center;
  height: 100%;
  padding: 4vmin 3.2vw;
}

.title {
  position: relative;
  width: 100%;
  max-width: 1760px;
  transform: translate3d(var(--px, 0px), var(--py, 0px), 0);
  will-change: transform;
}

.mark {
  display: block;
  width: 100%;
  height: auto;
}

.line {
  font-family: 'Anton', 'Haettenschweiler', 'Arial Narrow', Impact, sans-serif;
  font-size: 268px;
  fill: var(--ink);
  text-anchor: middle;
}

.sub {
  margin: clamp(14px, 2.2vmin, 30px) 0 0;
  font-size: clamp(9px, 1.05vw, 15px);
  letter-spacing: .42em;
  text-indent: .42em;
  text-align: center;
  text-transform: uppercase;
  color: #4a4a4a;
  transition: color .6s ease;
}

.grain {
  position: absolute;
  inset: -50%;
  z-index: 1;
  pointer-events: none;
  opacity: .045;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: drift 6s steps(4) infinite;
}

/* The curious bit: a disc that turns everything under it inside out. */
.lens {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  width: var(--lens);
  height: var(--lens);
  margin: calc(var(--lens) / -2) 0 0 calc(var(--lens) / -2);
  border-radius: 50%;
  background: #fff;
  mix-blend-mode: difference;
  pointer-events: none;
  transform: translate3d(var(--lx, 50vw), var(--ly, 50vh), 0);
  will-change: transform;
}

.lens.pulse { animation: peek .5s cubic-bezier(.22,.9,.3,1); }

@keyframes peek {
  0%   { transform: translate3d(var(--lx, 50vw), var(--ly, 50vh), 0) scale(1); }
  38%  { transform: translate3d(var(--lx, 50vw), var(--ly, 50vh), 0) scale(1.09); }
  100% { transform: translate3d(var(--lx, 50vw), var(--ly, 50vh), 0) scale(1); }
}

@keyframes drift {
  0%   { transform: translate3d(0, 0, 0); }
  25%  { transform: translate3d(-3%, 2%, 0); }
  50%  { transform: translate3d(2%, -3%, 0); }
  75%  { transform: translate3d(-2%, -2%, 0); }
  100% { transform: translate3d(0, 0, 0); }
}

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