/* ŠaDzivo — hero page. Čierna, biela, žltý akcent. Switzer.
   Animácia beží ako fixné plátno v pozadí celej stránky. */

@font-face {
  font-family: "Switzer";
  src: url("fonts/Switzer-Variable.woff2") format("woff2-variations");
  font-weight: 100 900; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Switzer";
  src: url("fonts/Switzer-VariableItalic.woff2") format("woff2-variations");
  font-weight: 100 900; font-style: italic; font-display: swap;
}

:root {
  --bg: #000000;
  --fg: #ffffff;
  --dim: rgba(255, 255, 255, 0.6);
  --dim-2: rgba(255, 255, 255, 0.36);
  --rule: rgba(255, 255, 255, 0.16);
  --accent: #ffc400;
  --panel: rgba(0, 0, 0, 0.58);

  --text-base: clamp(1.0625rem, 1rem + 0.35vw, 1.25rem);
  --text-lg:   clamp(1.25rem, 1.1rem + 0.7vw, 1.625rem);
  --text-xl:   clamp(1.75rem, 1.35rem + 1.8vw, 3rem);
  --text-2xl:  clamp(2.25rem, 1.6rem + 3vw, 4.5rem);

  --pad: clamp(1.25rem, 4vw, 3rem);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Switzer", -apple-system, sans-serif;
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.55;
}
p { margin: 0; }
a { color: inherit; }

/* nadpisy: black italic, tracking -50 */
h1, h2, h3 {
  margin: 0;
  font-weight: 900;
  font-style: italic;
  letter-spacing: -0.05em;
  line-height: 1.02;
}

:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
::selection { background: var(--accent); color: #000; }

/* ================= POZADIE: fixné plátno ================= */
.bg {
  position: fixed; inset: 0; z-index: 0;
  background: #000;
  pointer-events: none;
}
.bg canvas { display: block; width: 100%; height: 100%; }
/* jemný závoj, aby biely text držal kontrast aj cez krígeľ */
.bg::after {
  content: ""; position: absolute; inset: 0;
  background: rgba(0, 0, 0, 0.28);
}

.loading {
  position: fixed; z-index: 3; left: 50%; bottom: 1.5rem; transform: translateX(-50%);
  font-size: 0.75rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--dim-2);
}
.loading[hidden] { display: none; }

/* všetok obsah leží nad plátnom */
.top, main, .foot { position: relative; z-index: 2; }

/* ================= HORNÁ LIŠTA ================= */
.top {
  position: absolute; top: 0; left: 0; right: 0; z-index: 5;
  display: flex; align-items: center; gap: 1.5rem;
  padding: 1.25rem var(--pad);
  font-size: 0.8125rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--dim);
}
.top nav { margin-left: auto; display: flex; gap: 1.75rem; align-items: center; }
.top a { text-decoration: none; display: inline-flex; align-items: center; min-height: 44px; }
.top a:hover { color: var(--accent); }
.top a.login-link { padding: 0.4em 0.9em; border: 1px solid var(--rule); color: var(--fg); }
.top a.login-link:hover { border-color: var(--accent); color: var(--accent); }

/* ================= TITULKA ================= */
.title-screen {
  min-height: 100dvh;
  display: grid; align-content: center; justify-items: center;
  padding: 6rem var(--pad) 4rem;
  text-align: center;
}
.title-screen h1 { font-size: 23vw; line-height: 0.86; white-space: nowrap; }
.title-screen .sub {
  margin-top: clamp(1.25rem, 3vw, 2rem);
  font-size: var(--text-lg); color: var(--dim); max-width: 34ch;
}
.title-screen .sub b { color: var(--fg); font-weight: 500; }

.scroll-hint {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
  display: flex; flex-direction: column; align-items: center; gap: 0.9rem;
  font-size: 0.75rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--dim-2);
}
.scroll-hint i { display: block; width: 1px; height: 52px; background: var(--rule); }

/* ================= INFORMÁCIE POPRI KRÍGLI ================= */
.info { padding: 0 var(--pad); }
.info .row {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 44vw minmax(0, 1fr);
  align-items: center; gap: 0 2rem;
}
.info .col { max-width: 30ch; }
.info .col-l { grid-column: 1; }
.info .col-r { grid-column: 3; text-align: right; margin-left: auto; }

.info .col {
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.info .row.on .col { opacity: 1; transform: none; }
.info .row.on .col-r { transition-delay: 0.12s; }

.big {
  display: block;
  font-weight: 900; font-style: italic; letter-spacing: -0.05em;
  font-size: var(--text-xl); line-height: 1.02;
  font-variant-numeric: tabular-nums; color: var(--accent);
}
.small {
  display: block; margin-top: 0.7em;
  font-size: var(--text-base); line-height: 1.42; color: var(--dim);
}
.small b { color: var(--fg); font-weight: 500; }

/* ================= ZÁVER ANIMÁCIE ================= */
.finale {
  min-height: 100dvh;
  display: grid; align-content: center; justify-items: center;
  padding: 4rem var(--pad); text-align: center;
}
.finale .box {
  max-width: 660px;
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.finale.on .box { opacity: 1; transform: none; }
.finale h2 { font-size: var(--text-2xl); }
.finale p { margin-top: 1em; color: var(--dim); }
.finale .cta { margin-top: 2.25em; display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; min-height: 44px;
  padding: 0.7em 1.5em; text-decoration: none;
  font-weight: 500; font-size: var(--text-base);
  background: var(--accent); color: #000; border: 1px solid var(--accent);
  transition: opacity 0.18s ease;
}
.btn:hover { opacity: 0.85; }
.btn-ghost { background: transparent; color: var(--fg); border-color: var(--rule); }
.btn-ghost:hover { border-color: var(--fg); opacity: 1; }

/* ================= ČÍSLA ================= */
.facts { background: var(--panel); padding: clamp(4rem, 10vw, 8rem) var(--pad); }
/* text cez presvitajúce pozadie drží vďaka tieňu, nie vďaka nepriehľadnému panelu */
.facts, .links, .foot { text-shadow: 0 1px 16px rgba(0, 0, 0, 0.92), 0 0 4px rgba(0, 0, 0, 0.7); }
.wrap { width: min(1180px, 100%); margin: 0 auto; }

.facts h2 { font-size: var(--text-2xl); }
.facts .lede { margin-top: 1.25rem; font-size: var(--text-lg); color: var(--dim); max-width: 56ch; }
.facts .lede b { color: var(--fg); font-weight: 500; }

.facts dl {
  margin: clamp(3rem, 7vw, 5rem) 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--rule);
}
.facts .fact {
  display: flex; align-items: baseline; gap: 1.5rem;
  padding: clamp(1.1rem, 2.4vw, 1.6rem) 0;
  border-bottom: 1px solid var(--rule);
}
.facts .fact:nth-child(odd) { padding-right: clamp(1.5rem, 4vw, 3rem); }
.facts .fact:nth-child(even) { padding-left: clamp(1.5rem, 4vw, 3rem); border-left: 1px solid var(--rule); }
.facts dt { color: var(--dim); font-size: var(--text-base); }
.facts dd {
  margin: 0 0 0 auto; text-align: right;
  font-weight: 900; font-style: italic; letter-spacing: -0.05em;
  font-size: var(--text-lg); font-variant-numeric: tabular-nums; white-space: nowrap;
}
.facts dd.acc { color: var(--accent); }

/* ================= ODKAZY ================= */
.links { background: var(--panel); padding: clamp(3rem, 8vw, 5rem) var(--pad) clamp(4rem, 10vw, 8rem); }
.links-head { max-width: 62ch; margin-bottom: clamp(2rem, 5vw, 3rem); }
.links-head .eyebrow {
  display: block; margin-bottom: 0.7rem;
  font-size: 0.75rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent);
}
.links-head h2 { font-size: var(--text-2xl); }
.links-head .lede { margin-top: 1rem; font-size: var(--text-lg); color: var(--dim); }
.links .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
.big-link {
  background: rgba(0, 0, 0, 0.42); text-decoration: none; cursor: default;
  padding: clamp(2rem, 5vw, 3.5rem);
  display: flex; flex-direction: column; gap: 0.75rem;
  transition: background 0.2s ease;
}
.big-link:hover { background: rgba(0, 0, 0, 0.55); }
.big-link .no { font-size: 0.75rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--dim-2); }
.big-link h3 { font-size: var(--text-xl); }
.big-link p { color: var(--dim); max-width: 36ch; }

/* ================= PÄTIČKA ================= */
.foot { background: var(--panel); padding: clamp(2rem, 4vw, 3rem) var(--pad); border-top: 1px solid var(--rule); }
.foot .wrap { display: flex; gap: 1.25rem; justify-content: space-between; flex-wrap: wrap; }
.foot p { font-size: 0.875rem; color: var(--dim-2); }

/* ================= RESPONZÍVNE ================= */
@media (max-width: 900px) {
  .facts dl { grid-template-columns: 1fr; }
  .facts .fact:nth-child(odd), .facts .fact:nth-child(even) {
    padding-left: 0; padding-right: 0; border-left: none;
  }
  .links .grid { grid-template-columns: 1fr; }
}

@media (max-width: 767px) {
  .top { padding: 0.75rem var(--pad); gap: 1rem; }
  .top nav { gap: 1.1rem; }
  .top a { font-size: 0.75rem; letter-spacing: 0.08em; }

  .title-screen { padding: 5rem var(--pad) 3rem; }
  .title-screen h1 { font-size: 23vw; }
  .title-screen .sub { font-size: var(--text-base); max-width: 26ch; }
  .scroll-hint { margin-top: 2.5rem; }
  .scroll-hint i { height: 40px; }

  /* Na mobile netvorí každý údaj vlastnú obrazovku. Najprv sa scrolluje cez
     samotný krígeľ, potom príde jeden súvislý poloprehľadný blok, v ktorom
     idú všetky údaje pod sebou oddelené vlasovou linkou. */
  .info {
    padding: 0;
    margin-top: 42dvh;
    background: rgba(0, 0, 0, 0.66);
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    text-shadow: 0 1px 14px rgba(0, 0, 0, 0.9);
  }
  .info .row {
    min-height: 0;
    grid-template-columns: 1fr;
    align-content: start; align-items: start;
    padding: 0; gap: 0;
  }
  .info .col-l, .info .col-r {
    grid-column: 1; text-align: left; margin-left: 0; max-width: 100%;
    padding: 1.25rem var(--pad);
  }
  .info .row + .row .col-l,
  .info .col-r { border-top: 1px solid var(--rule); }

  .big { font-size: var(--text-lg); }
  .small { margin-top: 0.4em; }

  .finale { min-height: 90dvh; }
  .finale .box { max-width: 100%; }
  .finale .cta { flex-direction: column; align-items: stretch; }
  .finale .cta .btn { justify-content: center; }

  .facts { padding: clamp(3rem, 9vw, 5rem) var(--pad); }
  .facts .lede { font-size: var(--text-base); }
  .facts dl { margin-top: 2.25rem; }
  .facts .fact { gap: 1rem; }
  .facts dt { font-size: var(--text-sm, 1rem); }
  .links { padding-bottom: clamp(3rem, 9vw, 5rem); }
  .foot .wrap { flex-direction: column; gap: 0.5rem; }
}

@media (max-width: 380px) {
  .top span { display: none; }
  /* pri 24vw sa "ŠaDzivo" na 320 px presne dotýka okraja, 21vw drží rezervu */
  .title-screen h1 { font-size: 21vw; }
}

@media (prefers-reduced-motion: reduce) {
  .info .col, .finale .box, .btn, .big-link { transition: none; }
  .info .col, .finale .box { opacity: 1; transform: none; }
  .finale { min-height: 0; padding: 4rem var(--pad); }
}
/* skrátenie riadkov bez animácie platí len na desktope — mobil má už jeden blok */
@media (prefers-reduced-motion: reduce) and (min-width: 768px) {
  .info .row { min-height: 0; padding: 3rem 0; }
}