/* ============ BASE — KLATKI ============ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; overflow-x: clip; }
html[data-tier="full"] { scroll-behavior: auto; }

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.55;
  color: var(--cream);
  background: var(--black);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
em { font-style: normal; }
::selection { background: var(--pink); color: var(--cream); }

.mono {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.s-eyebrow { color: var(--cream-mute); margin-bottom: 18px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .1em;
  padding: 17px 34px;
  border: var(--rule) currentColor;
  border-radius: 999px;
  transition: background-color var(--dur-snap) ease, color var(--dur-snap) ease, border-color var(--dur-snap) ease, transform var(--dur-snap) var(--ease-out);
}
.btn:hover { transform: translateY(-2px); }
.btn--solid { background: var(--grad-ribbon); color: var(--ink); border-color: transparent; }
.btn--solid:hover { background: var(--yellow); }
.btn--line { background: transparent; color: var(--cream); border-color: var(--cream-faint); }
.btn--line:hover { border-color: var(--cream); }

/* ---------- Loader — rozbieg filmu ---------- */
.loader {
  position: fixed;
  inset: 0;
  z-index: var(--z-loader);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  padding: var(--gutter);
  background: var(--black);
  transition: opacity .6s var(--ease-hard), visibility .6s;
}
.loader.is-done { opacity: 0; visibility: hidden; }
.loader__pct {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(120px, 26vw, 380px);
  line-height: .8;
  letter-spacing: -.04em;
  font-variant-numeric: tabular-nums;
}
.loader__pct i { font-style: normal; font-size: .35em; color: var(--yellow); }
.loader__bar {
  width: 100%;
  height: 3px;
  background: rgba(255, 247, 230, .14);
  margin: 32px 0 16px;
}
.loader__bar span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--grad-ribbon);
  transform: scaleX(0);
  transform-origin: left;
}
.loader__label { opacity: .55; }

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  background: rgba(5, 3, 15, .72);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: var(--rule-soft);
  transition: transform .4s var(--ease-hard);
}
.nav.is-hidden { transform: translateY(-101%); }

.nav__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px var(--gutter);
  font-weight: 600;
}
.nav__brand em { color: var(--yellow); }

.nav__links {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 40px);
  padding: 0 var(--gutter);
}
.nav__links a { opacity: .7; transition: opacity var(--dur-snap) ease, color var(--dur-snap) ease; }
.nav__links a:hover { opacity: 1; color: var(--yellow); }

.nav__cta {
  display: flex;
  align-items: center;
  padding: 16px var(--gutter);
  background: var(--grad-ribbon);
  color: var(--ink);
  font-weight: 600;
  transition: filter var(--dur-snap) ease;
}
.nav__cta:hover { filter: brightness(1.12); }

/* ---------- Reveal (rows/cards) ---------- */
html[data-tier="full"] [data-reveal],
html[data-tier="lite"] [data-reveal] {
  opacity: 0;
  transform: translateY(36px);
}

/* ---------- Focus ---------- */
:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}