/* NEXT. Hair Systems — základní tokeny značky */
:root {
  --onyx: #0D0D0C;
  --graphite: #1C1B19;
  --ash: #2E2C29;
  --stone: #8C877E;
  --sand: #C9C2B6;
  --bone: #ECE7DE;
  --paper: #F6F3EE;
  --signal: #C4161C;

  --sans: "Archivo", "Helvetica Neue", Arial, sans-serif;

  --gutter: clamp(16px, 4vw, 56px);
  --ease: cubic-bezier(.16, 1, .3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--onyx);
  color: var(--bone);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  font-variation-settings: "wdth" 100;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
::selection { background: var(--signal); color: var(--bone); }

/* Typografické role */
.label {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 500;
  font-stretch: 125%;
  font-variation-settings: "wdth" 125;
  letter-spacing: .24em;
  text-transform: uppercase;
  line-height: 1.4;
}
/* Titulky: Archivo Expanded, verzálky — stejné DNA jako logo */
.display {
  font-family: var(--sans);
  font-variation-settings: "wdth" 125;
  font-stretch: 125%;
  font-weight: 600;
  text-transform: uppercase;
  line-height: 1;
  letter-spacing: -.012em;
  margin: 0;
}
.display em { font-style: normal; font-weight: 300; }
.dot { color: var(--signal); }
.sq {
  display: inline-block;
  width: .14em; height: .14em;
  background: var(--signal);
  margin-left: .04em;
  vertical-align: baseline;
}

/* Logo */
.wordmark { display: block; color: currentColor; }
.wordmark use { fill: currentColor; }

/* Zrnitost — jemná textura místo plochých digitálních ploch */
.grain {
  pointer-events: none;
  position: fixed; inset: -50%;
  z-index: 90;
  opacity: .07;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  animation: grain 1.2s steps(6) infinite;
}
@keyframes grain {
  0% { transform: translate(0, 0); }
  20% { transform: translate(-3%, 2%); }
  40% { transform: translate(2%, -4%); }
  60% { transform: translate(-4%, -1%); }
  80% { transform: translate(3%, 3%); }
  100% { transform: translate(0, 0); }
}

/* Fotografický styl značky: barevné, světlé, přirozené denní světlo */
.mono { filter: saturate(1.04) contrast(1.02); }

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