/* ==========================================================================
   growncode — holding page
   Základ podľa brands/growncode/design-smer.md (jeden zelený akcent, mono labels,
   1px linky, veľa vzduchu). Odchýlky od dokumentu, vedome:
     · dark je zdvihnutý z #0b0d10 na #12151a — pôvodná bola príliš čierna
     · pribudla svetlá téma (design-smer.md §2 bod 6 hovoril dark-only pre v1)
   ========================================================================== */

/* ------------------------------------------------------------- tmavá téma -- */

:root {
  color-scheme: dark;

  --gc-bg:           #12151a;  /* pozadie stránky */
  --gc-surface:      #1a1e25;  /* karty, panely */
  --gc-surface-2:    #232830;  /* elevated stav, kódové bloky */
  --gc-line:         #2f3641;  /* dekoratívne 1px oddeľovače */
  --gc-line-strong:  #6b7684;  /* hranica interaktívnych prvkov: 3,96:1 na bg, 3,62:1 na karte */

  --gc-accent:       #1dce5e;  /* plochy: CTA, bodky, indikátory */
  --gc-accent-hover: #3fe07c;
  --gc-accent-ink:   #35d96f;  /* zelený TEXT a linky */
  --gc-accent-edge:  #1dce5e;  /* zelená hranica pri hoveri */
  --gc-accent-dim:   rgba(29, 206, 94, .12);
  --gc-on-accent:    #06290f;  /* text na zelenej ploche */

  --gc-text:         #e9edf1;
  --gc-muted:        #98a2b0;  /* sekundárny text */
  --gc-faint:        #8b95a4;  /* poznámky pod čiarou */

  --gc-shadow:       rgba(0, 0, 0, .45);
  --gc-logo-op:      .08;      /* logo v pozadí hero */

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --maxw: 1200px;
  --pad: 24px;
  --radius: 8px;
}

/* ------------------------------------------------------------ svetlá téma -- */

:root[data-theme="light"] {
  color-scheme: light;

  --gc-bg:           #ffffff;
  --gc-surface:      #f6f8f9;
  --gc-surface-2:    #eef2f5;
  --gc-line:         #dbe1e7;
  --gc-line-strong:  #7f8895;  /* 3,58:1 na bg, 3,37:1 na karte */

  --gc-accent:       #1dce5e;
  --gc-accent-hover: #17b451;
  --gc-accent-ink:   #0c7a39;  /* zelená čitateľná na bielej (5,3:1) */
  --gc-accent-edge:  #129444;  /* #1dce5e má na bielej 2,1:1, #17b451 tiež len 2,7:1 */
  --gc-accent-dim:   rgba(29, 206, 94, .14);
  --gc-on-accent:    #06290f;

  --gc-text:         #0f1319;
  --gc-muted:        #55606d;
  --gc-faint:        #656f7c;  /* #6b7683 padalo na karte na 4,34:1 */

  --gc-shadow:       rgba(15, 19, 25, .14);
  --gc-logo-op:      .10;
}

/* bez JS: rešpektuj systémové nastavenie */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    color-scheme: light;

    --gc-bg:           #ffffff;
    --gc-surface:      #f6f8f9;
    --gc-surface-2:    #eef2f5;
    --gc-line:         #dbe1e7;
    --gc-line-strong:  #7f8895;
    --gc-accent-hover: #17b451;
    --gc-accent-ink:   #0c7a39;
    --gc-accent-edge:  #129444;
    --gc-accent-dim:   rgba(29, 206, 94, .14);
    --gc-text:         #0f1319;
    --gc-muted:        #55606d;
    --gc-faint:        #656f7c;
    --gc-shadow:       rgba(15, 19, 25, .14);
    --gc-logo-op:      .10;
  }
}

/* --------------------------------------------------------------- základ -- */

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

html {
  scroll-behavior: smooth;
  /* vodoznak v hero zámerne vybieha za okraj; clip ho ustrihne až na okraji
     viewportu a na rozdiel od overflow:hidden nezabíja position:sticky */
  overflow-x: clip;
}

/* kotvy nesmú skončiť pod sticky hlavičkou */
[id] { scroll-margin-top: 84px; }

body {
  margin: 0;
  background: var(--gc-bg);
  color: var(--gc-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  -webkit-tap-highlight-color: transparent;
}

a, button { touch-action: manipulation; }

.mono {
  font-family: var(--font-mono);
  font-feature-settings: "liga" 1;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad);
}

@media (min-width: 900px) {
  :root { --pad: 48px; }
}

a { color: var(--gc-accent-ink); text-decoration: none; }
a:hover { color: var(--gc-accent); }

:focus-visible {
  outline: 2px solid var(--gc-accent-ink);
  outline-offset: 3px;
  border-radius: 3px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--gc-accent);
  color: var(--gc-on-accent);
  padding: 10px 16px;
  z-index: 100;
}
.skip:focus { left: 8px; top: 8px; }

.dim { color: var(--gc-muted); }

/* ------------------------------------------------------------------ nav -- */

.nav {
  border-bottom: 1px solid var(--gc-line);
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--gc-bg) 82%, transparent);
  backdrop-filter: blur(10px);
}

@supports not (background: color-mix(in srgb, red 50%, transparent)) {
  .nav { background: var(--gc-bg); }
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--gc-text);
}
.brand:hover { color: var(--gc-text); }

.brand__mark {
  display: block;
  width: 28px;
  height: 28px;
  color: var(--gc-accent);
}
.brand__mark svg { display: block; width: 100%; height: 100%; }

.brand__word {
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -.01em;
}

.nav__right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* prepínač témy — len ikona
   Slnko a mesiac sú Lucide cesty; animácie kopírujú AnimateIcons (animateicons.in),
   ktoré je React + Motion. Tu je to prepísané do CSS, aby stránka ostala bez buildu.
     slnko: svg rotate 12°, jadro scale 1→1.18→1, lúče opacity 1→.7→1
     mesiac: svg y −2 px a scale 1.04, cesta opacity .85→1→.9 */
.themebtn {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid var(--gc-line-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--gc-muted);
  cursor: pointer;
  transition: color 150ms ease, border-color 150ms ease;
}
.themebtn:hover { color: var(--gc-text); border-color: var(--gc-muted); }

.ticon {
  grid-area: 1 / 1;
  width: 18px;
  height: 18px;
  display: none;
  transform-origin: center;
  overflow: visible;
}

/* v tmavej ponúkame slnko, v svetlej mesiac */
:root[data-theme="dark"] .ticon--sun { display: block; }
:root[data-theme="light"] .ticon--moon { display: block; }

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .ticon--sun { display: none; }
  :root:not([data-theme="dark"]) .ticon--moon { display: block; }
}

.themebtn:hover .ticon--sun,
.themebtn:focus-visible .ticon--sun {
  animation: sunTurn 1s cubic-bezier(.22, 1, .36, 1);
}
.themebtn:hover .ticon__core,
.themebtn:focus-visible .ticon__core {
  animation: sunCore 1s ease-in-out;
}
.themebtn:hover .ticon__ray,
.themebtn:focus-visible .ticon__ray {
  animation: sunRay 1s ease-in-out;
}
.themebtn:hover .ticon--moon,
.themebtn:focus-visible .ticon--moon {
  animation: moonBob .8s ease-in-out;
}
.themebtn:hover .ticon__moon,
.themebtn:focus-visible .ticon__moon {
  animation: moonGlow .8s ease-in-out;
}

@keyframes sunTurn { from { transform: rotate(0deg); } to { transform: rotate(12deg); } }
@keyframes sunCore { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.18); } }
@keyframes sunRay  { 0%, 100% { opacity: 1; } 50% { opacity: .7; } }
@keyframes moonBob {
  0%, 100% { transform: translateY(0) scale(1); }
  50%      { transform: translateY(-2px) scale(1.04); }
}
@keyframes moonGlow { 0% { opacity: .85; } 50% { opacity: 1; } 100% { opacity: .9; } }

.ticon__core { transform-origin: 12px 12px; }

/* prepínač jazyka */
.langs {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .78rem;
  letter-spacing: .08em;
}

.langs a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  min-height: 32px;
  color: var(--gc-muted);
  transition: color 150ms ease;
}
.langs a:hover { color: var(--gc-text); }
.langs a[aria-current="page"] { color: var(--gc-accent-ink); }

.langs__sep { color: var(--gc-line); }

/* --------------------------------------------------------------- labels -- */

.label {
  margin: 0 0 20px;
  font-size: .78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--gc-muted);
}

/* ----------------------------------------------------------------- hero -- */

.hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(64px, 12vw, 140px) clamp(56px, 9vw, 96px);
}

/* jemný zelený nádych za hero */
.hero__glyph {
  position: absolute;
  inset: -20% auto auto -10%;
  width: min(720px, 90vw);
  aspect-ratio: 1;
  background: radial-gradient(circle at 50% 50%, var(--gc-accent-dim), transparent 62%);
  pointer-events: none;
  z-index: -1;
}

/* logo growncode ako vodoznak (bez názvu značky) */
/* Vlastný orezávací obal — logo zámerne vybieha za pravý okraj hero sekcie
   a bez orezania robí horizontálny scrollbar. Zelený nádych vyššie ostáva mimo
   obalu, aby sa neorezal. */
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

.hero__logo {
  position: absolute;
  top: 50%;
  right: clamp(-120px, -6vw, -40px);
  width: min(520px, 58vw);
  height: auto;
  transform: translateY(-50%);
  opacity: var(--gc-logo-op);
  user-select: none;
}

@media (max-width: 720px) {
  .hero__logo {
    right: -25%;
    width: 78vw;
  }
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 28px;
  padding: 6px 14px 6px 12px;
  border: 1px solid var(--gc-line);
  border-radius: 999px;
  background: var(--gc-surface);
  font-size: .8rem;
  color: var(--gc-muted);
}

.status__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gc-accent);
  animation: pulse 2.4s ease-out infinite;
}

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(29, 206, 94, .45); }
  70%  { box-shadow: 0 0 0 9px rgba(29, 206, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(29, 206, 94, 0); }
}

.hero__h1 {
  margin: 0 0 24px;
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -.02em;
  text-wrap: balance;
}

.hero__lede {
  margin: 0 0 40px;
  max-width: 60ch;
  font-size: 1.06rem;
  color: var(--gc-muted);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* --------------------------------------------------------------- button -- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 13px 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-family: var(--font-mono);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 150ms ease, border-color 150ms ease, color 150ms ease, transform 150ms ease;
}

.btn--primary {
  background: var(--gc-accent);
  color: var(--gc-on-accent);
}
.btn--primary:hover {
  background: var(--gc-accent-hover);
  color: var(--gc-on-accent);
  transform: translateY(-1px);
}

.btn--ghost {
  border-color: var(--gc-line-strong);
  color: var(--gc-text);
  background: transparent;
}
.btn--ghost:hover {
  border-color: var(--gc-accent-edge);
  color: var(--gc-text);
}

.btn--logo { padding: 11px 20px; }

.btn--logo img {
  display: block;
  height: 22px;
  width: auto;
}

.caret { animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* -------------------------------------------------------------- section -- */

.section {
  padding-block: clamp(56px, 9vw, 96px);
  border-top: 1px solid var(--gc-line);
}

/* --------------------------------------------------------- voito teaser -- */

.teaser {
  background: var(--gc-surface);
  border: 1px solid var(--gc-line);
  border-radius: var(--radius);
  padding: clamp(24px, 4vw, 40px);
  transition: border-color 150ms ease;
}
.teaser:hover { border-color: var(--gc-accent-edge); }

.teaser__head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.teaser__mark {
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  flex: 0 0 auto;
  border: 1px solid var(--gc-line);
  border-radius: var(--radius);
  background: var(--gc-surface-2);
}
/* Voito značka je inline SVG, aby prsteň sledoval NAŠU tému.
   Pôvodný voito-mark.svg má vlastný prefers-color-scheme a riadil sa systémom —
   pri ručne prepnutej téme potom zmizol. */
.teaser__logo {
  display: block;
  color: var(--gc-text);
}

.teaser__name {
  margin: 0;
  font-size: clamp(1.6rem, 3.5vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -.01em;
}

.teaser__lede {
  margin: 0 0 24px;
  max-width: 62ch;
  color: var(--gc-muted);
}

.teaser__note {
  margin: 0;
  font-size: .82rem;
  color: var(--gc-muted);
}

/* -------------------------------------------------------------- kontakt -- */

.contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.contact__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 18px;
  border-top: 1px solid var(--gc-line);
  color: var(--gc-text);
}
a.contact__item:hover { color: var(--gc-text); border-top-color: var(--gc-accent-edge); }
a.contact__item:hover .contact__v { color: var(--gc-accent-ink); }

.contact__k {
  font-size: .74rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--gc-muted);
}

.contact__v {
  font-size: 1.02rem;
  transition: color 150ms ease;
}

/* --------------------------------------------------------------- footer -- */

.footer {
  border-top: 1px solid var(--gc-line);
  padding-block: 32px;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  font-size: .76rem;
  color: var(--gc-muted);
}
.footer__inner p { margin: 0; }

/* --------------------------------------------------------------- motion -- */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 400ms ease, transform 400ms ease;
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}