/* JAHODA—1 v4 — layout a komponenty v kro dizajnovom jazyku.                */
/* Vzdušné sekcie (min-height 100vh, padding 14vh 8vw), mono tagy, veľká     */
/* bold typografia, karty s tenkou linkou, marquee, pill CTA, BibTeX paper.  */

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

html { scroll-behavior: smooth; }

body {
  background: var(--v-bg-light);
  color: var(--v-cream);
  font-family: var(--v-sans);
  overflow-x: hidden;
  min-height: 100vh;
}

::selection { background: var(--v-red); color: #fff4ea; }

/* ── Fixné vrstvy pozadia a canvas ─────────────────────────────────────── */

#bg-fade {
  position: fixed; inset: 0; z-index: var(--z-bg);
  background: var(--v-bg-light);
  pointer-events: none;
}

/* hero „zátišie“ v4.4 — DOSKA STOLA ZHORA (god view): cream podklad, jemné
 * radiálne tieňovanie + vinětácia okrajov, svetlo ide ZĽAVA (ľavá polovica
 * dosky svetlejšia). Na dosku dopadajú ZĽAVA tiene konárov s lístím
 * (zrkadlovo ku kro — u nich sprava): assets/branch-shadows.svg, blurované
 * tmavé silhuety = škvrnité svetlo cez lístie. Žiadna fototextúra. */
#hero-art {
  position: fixed; inset: 0; z-index: var(--z-bg);
  pointer-events: none;
  background:
    url("../assets/branch-shadows.svg") left center / cover no-repeat,
    radial-gradient(72% 64% at 34% 44%, rgba(255, 247, 232, 0.78), transparent 70%),
    linear-gradient(100deg, #f8efdf 0%, #f3ead9 38%, #e3d2b8 70%, #ccb090 100%);
}
#hero-art::before { /* vinětácia okrajov dosky — mäkký radiálny spád do tepla */
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(115% 100% at 40% 46%,
    transparent 52%, rgba(96, 60, 40, 0.14) 78%, rgba(56, 33, 22, 0.30) 100%);
}
#hero-art::after { /* smerový spád: pravý dolný okraj dosky citeľne tmavší */
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(115deg,
    transparent 55%, rgba(88, 46, 34, 0.10) 80%, rgba(56, 28, 20, 0.20) 100%);
}

canvas#stage {
  position: fixed; inset: 0; z-index: var(--z-canvas);
  width: 100vw; height: 100vh;
  pointer-events: none;
}

/* ── Loader ────────────────────────────────────────────────────────────── */

#j-loader {
  position: fixed; inset: 0; z-index: var(--z-loader);
  background: var(--v-bg-light);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 18px;
  transition: opacity .8s ease, visibility .8s;
}
#j-loader.done { opacity: 0; visibility: hidden; }
#j-loader .word {
  font-size: clamp(28px, 5vw, 54px);
  letter-spacing: .35em; font-weight: 200; color: var(--v-ink);
  animation: v-pulse 1.6s ease-in-out infinite;
}
/* Teplomer (v4.4): banka vľavo, trubica so stupnicou; ortuť (scaleX riadi
 * engine) ustupuje k banke, ako teplota klesá k −40 °C. Len dizajn tokeny. */
#j-loader .thermo { display: flex; align-items: center; }
#j-loader .bulb {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--v-red-deep); border: 1px solid #cbb49e;
  margin-right: -4px; z-index: 1;
}
#j-loader .bar {
  width: 220px; height: 8px; background: #efe3d2;
  border: 1px solid #cbb49e; border-left: none;
  border-radius: 0 4px 4px 0; position: relative; overflow: hidden;
}
#j-loader .bar i {
  position: absolute; inset: 0; background: var(--v-red-deep);
  transform-origin: left; transform: scaleX(0.94); transition: transform .3s;
}
#j-loader .bar::after { /* stupnica na trubici */
  content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(90deg,
    transparent 0 25px, rgba(82, 50, 42, 0.35) 25px 26px);
}
#j-loader .t-read {
  font-family: var(--v-mono); font-size: 26px; font-weight: 700;
  color: var(--v-red-deep); letter-spacing: .06em;
}
#j-loader .t-label {
  font-family: var(--v-mono); font-size: 13px; letter-spacing: .28em;
  text-transform: uppercase; color: var(--v-ink);
}
@keyframes v-pulse { 0%, 100% { opacity: .35; } 50% { opacity: 1; } }

/* ── Progress + nav + pill ─────────────────────────────────────────────── */

.progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: var(--z-progress); }
.progress-bar { width: 0; height: 100%; background: var(--v-red); }

.knav {
  position: fixed; top: 0; left: 0; right: 0; z-index: var(--z-nav);
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px 34px;
  mix-blend-mode: difference;
}
.knav .logo { font-weight: 700; letter-spacing: .25em; font-size: 15px; color: var(--v-cream); }
.knav .links { display: flex; gap: 26px; }
.knav a {
  color: var(--v-cream); text-decoration: none; font-size: 13px;
  letter-spacing: .15em; text-transform: uppercase; opacity: .7; transition: opacity .3s;
}
.knav a:hover { opacity: 1; }
@media (max-width: 640px) { .knav .links { display: none; } }

.pill {
  position: fixed; right: 26px; bottom: 24px; z-index: var(--z-pill);
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 24px; border-radius: 999px;
  background: #f8f1e6; color: #241512;
  font-size: 14px; font-weight: 500; text-decoration: none;
  box-shadow: 0 6px 28px rgba(20, 8, 6, 0.35);
  transition: transform .3s;
}
.pill:hover { transform: translateY(-2px); }
.pill span { color: var(--v-red-deep); }

/* ── Sekcie — vzdušný základ ───────────────────────────────────────────── */

main, footer { position: relative; z-index: var(--z-content); }

section {
  position: relative; min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 14vh 8vw;
}
section.center { align-items: center; text-align: center; }

.tag {
  font-family: var(--v-mono);
  font-size: 13px; letter-spacing: .4em; text-transform: uppercase;
  color: var(--v-red); margin-bottom: 22px;
}
.tag.ink { color: var(--v-red-deep); }

h1.mega {
  font-size: clamp(58px, 13.5vw, 190px);
  line-height: .9; font-weight: 800; letter-spacing: -.02em; text-transform: uppercase;
  color: #fbf4e8;
  text-shadow: 0 3px 34px rgba(88, 42, 30, 0.38), 0 1px 6px rgba(88, 42, 30, 0.22);
}
h1 .acc, h2 .acc, h2 em.acc { color: var(--v-red); font-style: normal; }
h1 .acc { color: var(--v-red-deep); }

h2 {
  font-size: clamp(38px, 7.8vw, 106px);
  line-height: 1; font-weight: 750; letter-spacing: -.02em;
  color: var(--v-cream);
}
h2.giant {
  font-size: clamp(52px, 10vw, 150px);
  text-transform: uppercase; letter-spacing: -.01em;
  opacity: .92;
}
h3 { font-size: clamp(24px, 3.2vw, 42px); font-weight: 650; }

.lead {
  max-width: 560px;
  font-size: clamp(17px, 1.6vw, 21px); line-height: 1.65;
  color: var(--v-cream-body); margin-top: 26px;
}
.center-lead { margin-left: auto; margin-right: auto; max-width: 560px; }
.right-lead { margin-left: auto; text-align: right; max-width: 480px; }

.small {
  font-family: var(--v-mono);
  font-size: 12px; letter-spacing: .2em; text-transform: uppercase;
  color: var(--v-cream-faint);
}

/* ── HERO ──────────────────────────────────────────────────────────────── */

#hero { justify-content: flex-end; padding-bottom: 9vh; }
#hero .sub {
  display: flex; justify-content: space-between; align-items: flex-end;
  flex-wrap: wrap; gap: 20px; margin-top: 34px;
}
#hero .sub-lead {
  max-width: 430px; font-size: 16px; line-height: 1.65; color: var(--v-ink);
}
#hero .sub-mono {
  font-family: var(--v-mono); font-size: 17px; font-weight: 700;
  letter-spacing: .24em; text-align: right; line-height: 1.9;
  color: #3c221b; text-transform: uppercase;
}
#hero .sub-mono span { color: var(--v-red-deep); }
#hero .sub-mono sup { color: var(--v-red-deep); }

.scrollhint {
  position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%);
  font-family: var(--v-mono); font-size: 11px; letter-spacing: .35em;
  text-transform: uppercase; color: var(--v-ink-soft);
  animation: v-hint 2.2s ease-in-out infinite;
}
@keyframes v-hint {
  0%, 100% { transform: translateX(-50%); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ── 01 Architektúra — chat bubliny (kro AI sekcia) ────────────────────── */

#s-arch { max-width: 100%; }
#s-arch .lead {
  max-width: 480px;
  /* Sekcia je ešte na krémovom hero pozadí (hero-art fade 0.05–0.18).
   * Cream body text (#d9cbbc) by bol nečitateľný — ink má plný kontrast. */
  color: var(--v-ink);
}
.chat { max-width: 400px; margin-top: 44px; }
.bubble {
  padding: 13px 18px; border-radius: 16px;
  font-size: 16px; line-height: 1.5; margin-bottom: 12px; max-width: 85%;
}
.bubble.user { background: #2c1d1a; color: var(--v-cream); margin-left: auto; border-bottom-right-radius: 4px; }
.bubble.bot { background: var(--v-red); color: #fff4ea; border-bottom-left-radius: 4px; }

/* ── 02 Karty ──────────────────────────────────────────────────────────── */

.cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px; margin-top: 60px; width: 100%;
}
.card {
  border: 1px solid var(--v-card-line); background: var(--v-card-bg);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  padding: 34px 28px; border-radius: 4px;
  transition: border-color .4s, transform .4s;
}
.card:hover { border-color: var(--v-red); transform: translateY(-6px); }
.card .num {
  font-family: var(--v-mono); font-size: 12px; color: var(--v-red);
  letter-spacing: .3em; margin-bottom: 18px;
}
.card h4 { font-size: 23px; margin-bottom: 14px; font-weight: 650; }
.card p { font-size: 16px; line-height: 1.6; color: #c6b5a3; }
.card .metric { margin-top: 22px; font-size: 42px; font-weight: 800; color: var(--v-red); }
.card .metric span {
  font-family: var(--v-mono); font-size: 12px; font-weight: 400;
  color: var(--v-cream-faint); letter-spacing: .12em;
}

/* ── 04 Solo — model bez textu ─────────────────────────────────────────── */

#s-solo { min-height: 160vh; }

/* ── 05 Stat karty ─────────────────────────────────────────────────────── */

#s-stats { justify-content: flex-start; padding-top: 18vh; }
.statcards { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 12vh; max-width: 620px; }
.statcard {
  border: 1px solid var(--v-card-line); background: var(--v-card-bg);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  padding: 26px 28px 30px; border-radius: 4px; min-width: 250px; flex: 1;
}
.statcard .slabel {
  font-family: var(--v-mono); font-size: 12px; letter-spacing: .28em;
  color: var(--v-cream-faint); margin-bottom: 20px; text-transform: uppercase;
}
.statcard .snum { font-size: 48px; font-weight: 800; color: var(--v-cream); }
.statcard .snum span {
  display: block; margin-top: 10px;
  font-family: var(--v-mono); font-size: 12px; font-weight: 400;
  letter-spacing: .2em; color: var(--v-red);
}

/* ── 06 Recenzie ───────────────────────────────────────────────────────── */

.quotes {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px; margin-top: 50px; width: 100%;
}
.q {
  border: 1px solid var(--v-card-line); background: var(--v-card-bg);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  padding: 30px; border-radius: 4px;
}
.q .stars { color: var(--v-red); font-size: 14px; letter-spacing: .2em; margin-bottom: 16px; }
.q p { font-size: 18px; line-height: 1.6; font-style: italic; color: #ece3d2; }
.q .who { margin-top: 20px; font-size: 15px; font-style: normal; color: var(--v-red); }
.q .role {
  font-family: var(--v-mono); font-size: 12px; font-style: normal;
  color: var(--v-cream-faint); letter-spacing: .1em; text-transform: uppercase; margin-top: 4px;
}

/* ── 07 Tiers ──────────────────────────────────────────────────────────── */

.tiers {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px; margin-top: 56px; width: 100%;
}
.tier {
  border: 1px solid var(--v-card-line); background: var(--v-card-bg);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  padding: 38px 30px; border-radius: 4px; position: relative;
  transition: border-color .4s;
}
.tier:hover, .tier.hot { border-color: var(--v-red); }
.tier.hot::after {
  content: "NAJPREDÁVANEJŠIA*";
  position: absolute; top: -11px; right: 20px;
  background: var(--v-red); color: #fff4ea;
  font-size: 10px; font-weight: 700; letter-spacing: .15em;
  padding: 4px 10px; border-radius: 2px;
}
.tier h4 { font-size: 27px; font-weight: 750; margin-bottom: 8px; }
.tier .price { font-size: 17px; color: var(--v-red); margin-bottom: 24px; }
.tier ul { list-style: none; }
.tier li {
  font-size: 16px; color: #c6b5a3; padding: 11px 0;
  border-bottom: 1px solid #241a16; line-height: 1.5;
}
.tier li::before { content: "– "; color: var(--v-red); }

/* ── Marquee ───────────────────────────────────────────────────────────── */

.marquee {
  position: relative; z-index: var(--z-marquee);
  overflow: hidden; white-space: nowrap;
  border-top: 1px solid var(--v-line); border-bottom: 1px solid var(--v-line);
  padding: 18px 0; background: var(--v-bg-noir);
}
.marquee .track { display: inline-block; animation: v-mq 22s linear infinite; }
.marquee span {
  font-family: var(--v-mono); font-size: 15px; letter-spacing: .25em;
  text-transform: uppercase; color: var(--v-red); margin-right: 60px;
}
@keyframes v-mq { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* ── 08 Paper / BibTeX ─────────────────────────────────────────────────── */

.paper {
  max-width: 720px; border: 1px solid var(--v-card-line);
  background: var(--v-card-bg);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  padding: 44px; border-radius: 4px;
}
.paper h3 { margin-bottom: 18px; }
.paper p { font-size: 16px; line-height: 1.75; color: #c6b5a3; margin-bottom: 16px; }
.paper .bib-title { margin-top: 30px; }
.paper code {
  display: block; background: #110a09; border: 1px solid var(--v-line);
  padding: 18px; font-size: 13px; line-height: 1.6; color: #d8927e;
  border-radius: 4px; overflow-x: auto; font-family: var(--v-mono); white-space: pre;
}
.btns { display: flex; gap: 14px; flex-wrap: wrap; margin: 22px 0; }
.btn {
  display: inline-block; padding: 12px 22px;
  border: 1px solid var(--v-red); color: var(--v-red);
  text-decoration: none; font-family: var(--v-mono); font-size: 13px;
  letter-spacing: .2em; text-transform: uppercase; border-radius: 2px;
  transition: all .3s; background: none;
}
.btn:hover { background: var(--v-red); color: #fff4ea; }

/* ── 09 Záver + footer ─────────────────────────────────────────────────── */

#s-end h2 { font-size: clamp(44px, 8vw, 120px); }
/* v4.5 — PÁS PRE PLOD: v závere ležia polovice jahody NAD pätičkou. Bez tejto
 * rezervy plod prekrýval texty pätičky (v4.4 defekt). Mechanika:
 *   - main.lower padding-bottom pri doscrollovanom závere zdvihne text sekcie
 *     s-end NAD pás (pätička je ukotvená ku spodku dokumentu, takže sa nehýbe),
 *   - stiahnuté padding-bottom pätičky + odstup disclaimeru posunú texty
 *     pätičky NADOL.
 * Medzi nimi vzniká voľné pásmo, do ktorého mieri záverečný keyframe
 * (animation.js KEYFRAMES[1.00], engine.js END_LIFT_MOB/END_SCALE_MOB). */
main.lower { padding-bottom: 160px; }

.kfooter {
  border-top: 1px solid var(--v-line);
  padding: 70px 8vw 46px;
  background: transparent;
}
.kfooter .cols { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 30px; }
.kfooter a { color: var(--v-red); text-decoration: none; font-size: 16px; }
.kfooter a:hover { color: var(--v-red-bright); }
.kfooter .small { margin-bottom: 12px; }
.kfooter .colnote { font-size: 16px; line-height: 1.6; color: var(--v-cream-body); }
.kfooter .disclaimer {
  margin-top: 28px; font-size: 13px; line-height: 1.7;
  color: #a2917f; max-width: 700px;
}

/* ── WebGL fallback ────────────────────────────────────────────────────── */

#webgl-fallback {
  display: none;
  position: fixed; top: 60px; left: 50%; transform: translateX(-50%);
  z-index: var(--z-nav); max-width: 420px;
  background: #241512; color: var(--v-cream);
  padding: 14px 22px; border-radius: 4px; font-size: 13px; line-height: 1.5;
}
#webgl-fallback.visible { display: block; }

/* ── Reveal (JS setupReveal nastavuje inline štýly) ────────────────────── */

.rv { will-change: opacity, transform; }

[data-plx] { will-change: transform; }

/* ── Mobil ─────────────────────────────────────────────────────────────── */

@media (max-width: 640px) {
  section { padding: 12vh 7vw; }
  #hero .sub-mono { text-align: left; }
  .pill { right: 16px; bottom: 16px; padding: 12px 20px; font-size: 13px; }
  .paper { padding: 28px 22px; }
}

/* Mobil 390–430px — kro mobilná logika zrkadlovo: jahoda menšia HORE
 * (posúva ju engine), všetok hero text POD ňou na krémovom pozadí.
 * Nadpis tmavým inkom — plný kontrast, žiadna biela na červenej jahode. */
@media (max-width: 480px) {
  /* Sekcie sa zmestia na obsah — 100vh centrovanie tvorilo na mobile mŕtve
   * vertikálne diery medzi kartami a nadpismi. Hero a solo ostávajú vysoké. */
  section { min-height: auto; padding: 7vh 7vw; }
  #hero { min-height: 100vh; }
  #s-solo { min-height: 150vh; }
  #s-stats { padding-top: 12vh; }
  .statcards { margin-top: 7vh; }
  h1.mega {
    font-size: clamp(54px, 16vw, 68px);
    color: var(--v-ink);
    text-shadow: none;
  }
  #hero { padding-bottom: 11vh; }
  #hero .sub { margin-top: 22px; gap: 14px; }
  #hero .sub-lead { font-size: 16px; max-width: 100%; }
  #hero .sub-mono { font-size: 15px; line-height: 1.9; letter-spacing: .2em; }
  .scrollhint { display: none; }
  .tag { font-size: 12px; letter-spacing: .3em; }
  .lead { font-size: 17px; }
  h2 { font-size: clamp(34px, 9.5vw, 44px); }
  h2.giant { font-size: clamp(46px, 13vw, 56px); }
  #s-end h2 { font-size: clamp(38px, 11vw, 48px); }
  .card { padding: 28px 22px; }
  .card .metric { font-size: 36px; }
  .statcard .snum { font-size: 40px; }
  .marquee span { font-size: 13px; }
  /* mobil: pás pre plod musí byť vyšší (úzky viewport → plod je relatívne
   * väčší), pätička drží spodný odstup kvôli pill CTA */
  main.lower { padding-bottom: 210px; }
  .kfooter { padding: 40px 7vw 76px; }
  .kfooter .disclaimer { font-size: 14px; margin-top: 22px; }
  /* voľne plávajúci lead v stats leží na mobile cez svetlý rez jahody —
   * dostáva kartový podklad, inak je biely text na bielej dužine */
  .right-lead {
    background: rgba(11, 6, 8, 0.55);
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--v-card-line);
    border-radius: 4px; padding: 20px 22px;
    text-align: left; margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  #j-loader .word, .scrollhint, .marquee .track { animation: none; }
  html { scroll-behavior: auto; }
}

/* ── Pätička: kontrast textu (v4.5, AC >= 4.5:1) ────────────────────────────
 * V závere presvitá cez pätičku teplý ľavý glow #bg-fade (namerané podklady
 * až rgb(69,36,23)); akcentová --v-red #d94436 tam dávala len 3.2:1
 * a --v-cream-faint #a09280 4.6:1. Zosvetlené LEN v pätičke — akcentová
 * paleta sekcií ostáva nedotknutá.
 *
 * v4.5 oprava (QA_V45 bod 3b): pôvodné #f2765c padlo na mobile na 4.23:1 —
 * predošlé meranie bralo PRIEMER podkladu celého bboxu, nie najsvetlejší
 * podklad pod skutočnými pixelmi písma (opravené v measure_layout_v45.py).
 * Namerané minimum na pixeloch písmen cez všetky podklady a oba viewporty
 * (tools/measure_layout_v45.py): odkaz 5.53, .small 4.98, colnote 11.98,
 * disclaimer 5.30. */
.kfooter a { color: #f8927a; }
.kfooter a:hover { color: #ffb6a2; }
.kfooter .small { color: #b8a894; }
.kfooter .disclaimer { color: #b0a08e; }