/* The sound site (docs/tasks/2026-10-18_zvukova_stranka_kostra.md): the landing's language - the marbled black, the
   code monospace engraved in glass, silver on black, the cyan-blue neon as the only accent. */
:root {
  --ink: #050506; --chrome: #E9ECEF; --muted: #8F949B; --line: rgba(233, 236, 239, .14);
  --neon: #46C8FF;   /* the ZVUK pane's cold cyan-blue */
  --sans: "Sora", system-ui, sans-serif; --mono: "Geist Mono", ui-monospace, monospace;
  --ryha: #6E737A;   /* the cut's floor: frosted glass, light enough for a heading (3:1 and more on the plate) */
  --pad: clamp(16px, 5vw, 96px);
  --ease: cubic-bezier(.16, 1, .3, 1);
}
*, *::before, *::after { box-sizing: border-box; }
html { background: var(--ink); color-scheme: dark; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; color: var(--chrome); font: 400 17px/1.65 var(--sans); -webkit-font-smoothing: antialiased; overflow-x: hidden; overflow-x: clip;
  background: transparent; }   /* the html carries the ink; a body background would paint over the fixed layer below */
/* cymatics under water (tools/video/zvuk_pozadie.py; round 2, the owner 10-18): a still fixed behind the page, the
   content scrolls over it; 9:16 on an upright screen */
body::before { content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(120% 90% at 50% 10%, rgba(5, 5, 6, 0) 45%, rgba(5, 5, 6, .55) 100%), url("img/pozadie_16x9.webp?v=62ac151819") center / cover no-repeat, var(--ink); }
@media (orientation: portrait) {
  body::before { background: radial-gradient(120% 90% at 50% 10%, rgba(5, 5, 6, 0) 45%, rgba(5, 5, 6, .55) 100%), url("img/pozadie_9x16.webp?v=aff6a46df6") center / cover no-repeat, var(--ink); }
}
a { color: inherit; }
img, video { display: block; max-width: 100%; }
:focus-visible { outline: 2px solid var(--neon); outline-offset: 3px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 12px; z-index: 100; padding: 10px 14px; background: var(--chrome); color: var(--ink); }
.skip:focus { left: 12px; }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.ryha-defs { position: absolute; width: 0; height: 0; overflow: hidden; }

/* the engraved words: capitals in the code monospace, widely spaced, cut into a plate of frosted glass */
.ryha { color: var(--ryha); filter: url(#ryha); font-family: var(--mono); font-weight: 600; text-transform: uppercase; }

/* ── the bar ─────────────────────────────────────────────────────────────────────────────────────────────── */
.lista { position: fixed; inset: 0 0 auto; z-index: 40; display: flex; align-items: center; gap: 24px; height: 68px; padding: 0 var(--pad);
  background: linear-gradient(180deg, rgba(5, 5, 6, .86), rgba(5, 5, 6, .55)); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line); }
.znak { display: inline-flex; align-items: center; gap: 10px; font: 600 15px/1 var(--mono); letter-spacing: .22em; text-transform: uppercase;
  text-decoration: none; }
.znak .logo { width: auto; height: 26px; color: var(--chrome); filter: drop-shadow(0 0 6px rgba(70, 200, 255, .45)); }   /* the M of the BigM lettering (tools/minimal/znak_m.py) */
.impresum { margin: 22px 0 0; color: var(--muted); font: 400 12px/1.5 var(--mono); letter-spacing: .04em; }
.lista nav { flex: 1; min-width: 0; }
.lista ul { display: flex; justify-content: center; gap: clamp(14px, 2vw, 30px); margin: 0; padding: 0; list-style: none; }
.lista nav a { color: var(--muted); font: 500 11.5px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; text-decoration: none;
  white-space: nowrap; transition: color .3s; }
.lista nav a:hover, .lista nav a[aria-current="true"] { color: var(--chrome); }
.lista nav a[aria-current="true"] { text-shadow: 0 0 10px rgba(70, 200, 255, .5); }
.spat { color: var(--muted); font: 500 11px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; text-decoration: none; white-space: nowrap; }
.spat:hover { color: var(--chrome); }
@media (max-width: 900px) {
  /* a phone: the bar on two rows, the sections a strip that scrolls sideways */
  .lista { flex-wrap: wrap; height: auto; padding-top: 12px; padding-bottom: 0; row-gap: 10px; }
  .lista nav { order: 3; flex-basis: 100%; margin: 0 calc(var(--pad) * -1); overflow-x: auto; scrollbar-width: none;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 16px, #000 calc(100% - 24px), transparent);
    mask-image: linear-gradient(90deg, transparent, #000 16px, #000 calc(100% - 24px), transparent); }
  .lista nav::-webkit-scrollbar { display: none; }
  .lista ul { justify-content: flex-start; gap: 22px; padding: 2px var(--pad) 12px; width: max-content; }
  .lista nav a { display: inline-block; padding: 6px 0; }
  .spat { margin-left: auto; }
}

/* ── Domov: a still of the video full screen (the video waits for a finished track) ───────────────────────────── */
.hero { position: relative; min-height: 100vh; min-height: 100svh; overflow: hidden; isolation: isolate; }
.hero-video { position: absolute; inset: 0; z-index: -2; background: #000 url("media/hero_16x9.webp?v=dd63ecc28c") center / cover no-repeat; }
@media (orientation: portrait) { .hero-video { background-image: url("media/hero_9x16.webp?v=f4c8427e44"); } }
.hero::after { content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(180deg, rgba(5, 5, 6, .45) 0%, rgba(5, 5, 6, 0) 22%, rgba(5, 5, 6, 0) 50%, rgba(5, 5, 6, .55) 76%, rgba(5, 5, 6, .9) 100%); }
/* our own home (the owner, 10-18): the video full bleed; at its lower third, centred, a quiet stack - the engraved
   name at a moderate size, one line, two small buttons. The bio is a block of its own under the hero. */
.hero-obsah { position: absolute; left: 0; right: 0; top: 50%;   /* in the middle of the figure behind it (the owner, 10-18) */
  transform: translateY(-50%); display: grid; justify-items: center;
  gap: 12px; padding: 0 var(--pad); text-align: center; }
.hero-titul { margin: 0; padding-left: .22em; font-size: clamp(30px, 4.2vw, 58px); line-height: 1; letter-spacing: .22em; color: #9AA0A7; }
.hero-riadok { margin: 0; color: rgba(233, 236, 239, .86); font: 500 11.5px/1.4 var(--mono); letter-spacing: .26em; text-transform: uppercase;
  text-shadow: 0 1px 10px rgba(0, 0, 0, .9); }
.akcie { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 8px 0 0; }
.akcie .tl { min-height: 40px; padding: 0 18px; font-size: 11px; }
/* the bio: a narrow column on the marble, right under the video */
.o-mne { max-width: 46ch; margin: 0 auto; padding: clamp(56px, 9vh, 96px) var(--pad) 0; box-sizing: content-box; }
.bio { margin: 0; color: rgba(233, 236, 239, .9); font-size: clamp(17px, 1.3vw, 19px); line-height: 1.7; }
.tl { display: inline-flex; align-items: center; min-height: 48px; padding: 0 26px; border: 1px solid var(--neon); border-radius: 999px;
  background: rgba(70, 200, 255, .1); color: var(--chrome); font: 600 12px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase;
  text-decoration: none; cursor: pointer; transition: background .3s, box-shadow .3s; }
.tl:hover { background: rgba(70, 200, 255, .2); box-shadow: 0 0 18px rgba(70, 200, 255, .35); }
.tl[hidden] { display: none; }   /* the display above would show a button the script has not switched on */
.tl--ciara { border-color: rgba(233, 236, 239, .35); background: transparent; }
.tl--ciara:hover { border-color: var(--chrome); background: rgba(233, 236, 239, .06); box-shadow: none; }

/* ── the sections ──────────────────────────────────────────────────────────────────────────────────────── */
.sekcia { padding: clamp(80px, 12vh, 140px) var(--pad) 0; max-width: 1400px; margin: 0 auto; scroll-margin-top: 60px; }
.sekcia-titul { display: inline-block; margin: 0 0 28px; padding: 14px 22px 12px; border-radius: 14px; font-size: clamp(30px, 4.6vw, 64px); line-height: 1;
  letter-spacing: .22em;
  /* the plate of glass the word is cut into */
  background: linear-gradient(160deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .02) 45%, rgba(255, 255, 255, .04)), rgba(10, 11, 13, .45);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .2), inset 0 0 0 1px rgba(255, 255, 255, .06); }
.uvod { max-width: 62ch; margin: 0 0 32px; color: rgba(233, 236, 239, .82); }
.poznamka { margin: 18px 0 0; color: var(--muted); font: 400 14px/1.5 var(--sans); }
.pripravujeme { display: inline-block; margin-left: 8px; padding: 4px 10px; border: 1px solid rgba(70, 200, 255, .5); border-radius: 999px; color: var(--neon);
  font: 600 11.5px/1.2 var(--mono); letter-spacing: .16em; text-transform: uppercase; vertical-align: 2px; }

/* Videá */
.video-velke { margin: 0; }
.video-velke video { width: 100%; aspect-ratio: 16 / 9; border-radius: 16px; background: #000 center / cover; border: 1px solid var(--line); }
/* until the first video: the still, dimmed, with "Pripravujeme" in its middle */
.video-still { position: relative; display: grid; place-items: center; aspect-ratio: 16 / 9; border-radius: 16px; border: 1px solid var(--line);
  background: linear-gradient(rgba(5, 5, 6, .45), rgba(5, 5, 6, .45)), #000 url("media/hero_16x9.webp?v=dd63ecc28c") center / cover no-repeat; }
.video-still .pripravujeme { margin: 0; padding: 8px 16px; font-size: 13px; background: rgba(5, 5, 6, .6); }
figcaption { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 16px; margin-top: 12px; }
figcaption b { font: 600 13px/1.3 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
figcaption span { color: var(--muted); font: 400 13px/1.3 var(--mono); }
/* the owner's videos (Správca): the newest large, the rest a grid */
.videa-zoznam { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 26px 22px; margin: 0; padding: 0; list-style: none; }
.videa-zoznam > li:first-child { grid-column: 1 / -1; }
.video-odkaz { display: none; }
.video-ram { position: relative; aspect-ratio: 16 / 9; overflow: hidden; border-radius: 16px; border: 1px solid var(--line); background: #000; }
.video-ram iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video-ram--odkaz { display: grid; place-items: center; background: linear-gradient(rgba(5, 5, 6, .5), rgba(5, 5, 6, .5)), #000 url("media/hero_16x9.webp?v=dd63ecc28c") center / cover; }
.video-spusti { position: absolute; inset: 0; display: grid; place-items: center; width: 100%; padding: 0; border: 0; cursor: pointer;
  background: #000 center / cover no-repeat; color: var(--chrome); }
.video-spusti svg { width: 72px; height: 72px; padding: 22px; border: 1px solid rgba(70, 200, 255, .6); border-radius: 50%; background: rgba(5, 5, 6, .55);
  fill: currentColor; transition: background .3s, box-shadow .3s; }
.video-spusti:hover svg { background: rgba(70, 200, 255, .2); box-shadow: 0 0 22px rgba(70, 200, 255, .4); }
.video-popis { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 16px; margin: 12px 0 0; }
.video-popis b { font: 600 13px/1.3 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.video-popis span { color: var(--muted); font: 400 13px/1.3 var(--mono); }

/* Vizuály */
.vizualy { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(14px, 2vw, 26px); margin: 0; padding: 0; list-style: none; }
.vizualy figure { margin: 0; cursor: zoom-in; }
.vizualy li:last-child:nth-child(odd) { grid-column: 1 / -1; }   /* an odd last loop (Iris) takes the whole row */
/* a visual over the whole page */
.cele { position: fixed; inset: 0; z-index: 90; display: grid; place-items: center; background: #000; }
.cele[hidden] { display: none; }
.cele-obraz { width: 100%; height: 100%; object-fit: contain; }
.cele-nazov { position: absolute; left: var(--pad); bottom: 22px; margin: 0; color: var(--muted); font: 600 12px/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; }
.cele-zavri { position: absolute; top: 18px; right: 18px; display: grid; place-items: center; width: 48px; height: 48px; padding: 0; border: 1px solid var(--line);
  border-radius: 50%; background: rgba(5, 5, 6, .6); color: var(--chrome); cursor: pointer; }
.cele-zavri svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; }
.cele-otvorene, .cele-otvorene body { overflow: hidden; }
.vizualy img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 14px; border: 1px solid var(--line); background: #000 center / cover;
  transition: border-color .4s; }
.vizualy figure:hover img { border-color: rgba(70, 200, 255, .55); }
.vizualy figcaption { font: 600 13px/1.3 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.vizualy figcaption span { font-weight: 400; letter-spacing: 0; text-transform: none; font-family: var(--sans); }

/* The Loop: the app's picture in a pane of glass */
.loop-obraz { margin: 0; padding: clamp(8px, 1vw, 14px); border: 1px solid var(--line); border-radius: 22px;
  background: linear-gradient(160deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .015) 50%), rgba(10, 11, 13, .5);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .55), 0 0 60px rgba(70, 200, 255, .08); }
.loop-obraz img { width: 100%; height: auto; border-radius: 14px; }
.loop-kde { display: block; margin-top: 12px; color: var(--muted); }

/* Msounds (P12.37): the app anyone installs, one small card of the same glass; a computer sees the QR beside it */
.app-karta { display: flex; flex-wrap: wrap; align-items: center; gap: 24px 32px; max-width: 760px; box-sizing: border-box;
  padding: 24px 26px; border: 1px solid var(--line); border-radius: 18px;
  background: linear-gradient(160deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .015) 50%), rgba(10, 11, 13, .55); }
.app-text { flex: 1 1 280px; }
.app-veta { margin: 10px 0 0; font: 400 clamp(19px, 1.6vw, 23px)/1.4 var(--sans); }
.akcie--app { justify-content: flex-start; margin: 20px 0 0; }
.app-qr { display: grid; justify-items: center; gap: 10px; margin: 0; }
.app-qr[hidden] { display: none; }
.app-qr img { display: block; width: 112px; height: 112px; border-radius: 10px; background: var(--chrome); }
.app-qr figcaption { color: var(--muted); font: 500 11.5px/1.3 var(--mono); letter-spacing: .02em; }

/* Samply, Obchod: a product card - name, kind, price, a play button */
.karty { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(14px, 2vw, 24px); margin: 0; padding: 0; list-style: none; }
.karta { position: relative; padding: 22px 22px 24px; border: 1px solid var(--line); border-radius: 16px;
  background: linear-gradient(160deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .015) 50%), rgba(10, 11, 13, .55); }
.karta h3 { margin: 6px 0 0; font: 500 19px/1.3 var(--sans); }
.karta-druh { margin: 0; color: var(--neon); font: 500 11.5px/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; }
.karta-cena { margin: 16px 0 0; color: var(--muted); font: 500 13px/1 var(--mono); }
.karta-hraj { position: absolute; top: 18px; right: 18px; display: grid; place-items: center; width: 40px; height: 40px; padding: 0; border: 1px solid var(--line);
  border-radius: 50%; background: transparent; color: var(--muted); }
.karta-hraj svg { width: 16px; height: 16px; fill: currentColor; }
.karta-hraj:disabled { opacity: .55; cursor: not-allowed; }

/* Vystúpenia: parked with the section (klienti/SK/bigm/odlozene/, 2026-10-20); the styles wait for its return */
.vystup { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(28px, 5vw, 80px); align-items: start; }
.formaty { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.formaty li { display: grid; gap: 2px; padding: 14px 0; border-top: 1px solid var(--line); }
.formaty b { font: 600 14px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.formaty span { color: var(--muted); }
.cena { margin: 26px 0 0; color: var(--muted); font: 500 14px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.cena b { color: var(--chrome); font-size: 34px; letter-spacing: 0; }
.rezervacia { display: grid; gap: 14px; padding: clamp(20px, 2.4vw, 32px); border: 1px solid rgba(70, 200, 255, .35); border-radius: 18px;
  background: rgba(10, 11, 13, .6); }
.rez-titul { margin: 0 0 4px; font: 600 13px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; }
.rezervacia label { display: grid; gap: 6px; color: var(--muted); font: 500 11px/1.2 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.rezervacia :is(input:not(.vh), textarea) { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; background: rgba(0, 0, 0, .4);
  color: var(--chrome); font: 400 16px/1.4 var(--sans); letter-spacing: 0; text-transform: none; }
.rezervacia :is(input:not(.vh), textarea):focus { outline: none; border-color: var(--neon); }
.rezervacia .tl { justify-self: start; }
.rez-stav { margin: 0; color: var(--neon); font-size: 14px; }
.rez-pozn { margin: 0; color: var(--muted); font-size: 13px; }

/* Kontakt */
.siete { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin: 0; padding: 0; list-style: none; }
.siete a { display: grid; gap: 6px; padding: 22px; border: 1px solid var(--line); border-radius: 16px; text-decoration: none; transition: border-color .3s, background .3s; }
.siete a:hover { border-color: rgba(70, 200, 255, .55); background: rgba(70, 200, 255, .05); }
.siete span { color: var(--neon); font: 500 11.5px/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; }
.siete b { font: 500 16px/1.3 var(--sans); overflow-wrap: anywhere; }

.paticka { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; margin-top: clamp(90px, 14vh, 160px); padding: 24px var(--pad) 30px;
  border-top: 1px solid var(--line); color: var(--muted); font: 400 11px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
.paticka a { text-decoration: none; }
.paticka a:hover { color: var(--chrome); }

@media (max-width: 760px) {
  body { font-size: 16px; }
  /* the phone figure is small and its lines cross the stack: a soft dark behind the words */
  .hero-obsah { padding-top: 34px; padding-bottom: 34px; background: radial-gradient(closest-side, rgba(5, 5, 6, .78), rgba(5, 5, 6, 0)); }
  .vizualy, .karty, .siete, .vystup { grid-template-columns: minmax(0, 1fr); }
  .sekcia-titul { padding: 10px 16px 8px; letter-spacing: .16em; }
}