:root {
  --void: #030303;
  --panel: #0C0B0E;
  --chalk: #DCD6D4;
  --text: #BDB6B9;
  --muted: #827B84;
  --violet: #C93CF5;
  --ultra: #6E3BFF;
  --line: rgba(220, 214, 212, 0.18);
  --line-strong: rgba(220, 214, 212, 0.4);

  --font-display: "Archivo", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --gutter: clamp(1rem, 4vw, 3.5rem);
  --nav-h: 4rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-snap-type: y proximity;
  -webkit-text-size-adjust: 100%;
  background: var(--void);
}

/* body schvalne bez pozadi: tma je na html, aby platno EKG se z-index -1 zustalo videt */
body {
  margin: 0;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.15rem);
  line-height: 1.65;
  overflow-x: hidden;
}

/* zrnitost jako na logu, pres celou stranku vcetne EKG */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 15;
  pointer-events: none;
  opacity: 0.07;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .6 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

h1, h2, h3 { margin: 0; font-weight: 700; line-height: 1; color: var(--chalk); }
p { margin: 0 0 1em; }
a { color: inherit; }
::selection { background: var(--violet); color: var(--void); }

:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--chalk);
  color: var(--void);
  font-family: var(--font-mono);
}
.skip:focus { top: 1rem; }

.wrap {
  width: 100%;
  max-width: 78rem;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

section {
  position: relative;
  scroll-snap-align: start;
}

/* EKG platno lezi pod veskerym obsahem vcetne loga */
#pulse {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* Popisky sekci ve stylu titulku na logu: mono, prolozene, s lomitky */
.label {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.78rem;
  line-height: 1.4;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--chalk);
  margin-bottom: clamp(2rem, 6vh, 3.5rem);
}
.label::before {
  content: "////";
  margin-right: 1.2em;
  letter-spacing: 0.1em;
  color: var(--violet);
}

/* Zamerovaci krizek z logo linek */
.cross {
  position: absolute;
  width: 21px;
  height: 21px;
  background:
    linear-gradient(var(--chalk), var(--chalk)) center / 1px 100% no-repeat,
    linear-gradient(var(--chalk), var(--chalk)) center / 100% 1px no-repeat;
}
.cross--tl { top: -11px; left: -11px; }
.cross--br { bottom: -11px; right: -11px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.75rem 1.4rem;
  border: 1px solid var(--line-strong);
  background: var(--void);
  color: var(--chalk);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.btn:hover { border-color: var(--chalk); background: var(--chalk); color: var(--void); }
.btn--primary { background: var(--violet); border-color: var(--violet); color: var(--void); }
.btn--primary:hover {
  background: var(--violet);
  border-color: var(--violet);
  color: var(--void);
  box-shadow: 0 0 0 1px var(--violet), 0 0 28px rgba(201, 60, 245, 0.55);
}

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 20;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: 2rem;
  padding-inline: var(--gutter);
  color: var(--chalk);
  transition: background-color 0.3s, border-color 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(3, 3, 3, 0.82);
  border-bottom-color: var(--line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.nav__logo {
  margin-right: auto;
  font-weight: 900;
  font-stretch: 125%;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  text-decoration: none;
}
.nav__bpm {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
.nav__bpm span { color: var(--violet); font-variant-numeric: tabular-nums; }
.nav__menu { display: flex; gap: 1.6rem; }
.nav__menu a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  padding-block: 0.4rem;
  background: linear-gradient(var(--violet), var(--violet)) 0 100% / 0 1px no-repeat;
  transition: background-size 0.25s, color 0.25s;
}
.nav__menu a:hover, .nav__menu a[aria-current="true"] { background-size: 100% 1px; color: var(--chalk); }
.nav__toggle {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: inherit;
  background: none;
  border: 1px solid var(--line-strong);
  padding: 0.5rem 0.9rem;
  cursor: pointer;
}

@media (max-width: 900px) {
  .nav__toggle { display: inline-block; position: relative; z-index: 2; }
  .nav__bpm { margin-right: 0; }
  .nav__menu {
    position: fixed;
    inset: 0;
    z-index: 1;
    flex-direction: column;
    justify-content: center;
    gap: 0.4rem;
    padding: var(--gutter);
    background: var(--void);
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.25s, visibility 0.25s;
  }
  .nav__menu a {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 8vw, 3rem);
    font-weight: 800;
    font-stretch: 125%;
    letter-spacing: 0;
    line-height: 1.2;
    align-self: flex-start;
  }
  .nav.is-open .nav__menu { visibility: visible; opacity: 1; }
  .nav.is-open .nav__logo { position: relative; z-index: 2; }
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  grid-template-areas: "lead logo actions";
  align-items: end;
  gap: 2rem;
  padding: var(--nav-h) var(--gutter) clamp(1.5rem, 5vh, 3rem);
}
.hero__logo {
  grid-area: logo;
  align-self: center;
  position: relative;
  width: min(calc(100svh - var(--nav-h) - 2rem), 52vw, 920px);
  /* logo zakryva EKG; okraje ctverce dohasinaji do tmy, takze stopa do nej plynule zajede */
  -webkit-mask-image: linear-gradient(to right, transparent, #000 10%, #000 90%, transparent), linear-gradient(to bottom, transparent, #000 6%, #000 94%, transparent);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(to right, transparent, #000 10%, #000 90%, transparent), linear-gradient(to bottom, transparent, #000 6%, #000 94%, transparent);
  mask-composite: intersect;
}
.hero__logo img { display: block; width: 100%; height: auto; }
/* glitch: kopie loga, ktere JS kratce zapina v nahodnych pruzich */
.glitch {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  background: url("assets/puls-logo-800.webp") center / 100% 100% no-repeat;
}
/* barevne kopie: logo vynasobene barvou a prictene pres screen = posunuty barevny kanal */
.glitch--ultra, .glitch--violet { mix-blend-mode: screen; background-blend-mode: multiply; }
.glitch--ultra { background-color: var(--ultra); background-image: url("assets/puls-logo-800.webp"); }
.glitch--violet { background-color: var(--violet); background-image: url("assets/puls-logo-800.webp"); }
/* nepruhledna kopie: posunuty "vytrzeny" pruh */
.glitch--slice { background-color: var(--void); }
/* uvodni veta jako dalsi popisek z loga: mono, verzalky, prolozene, s fialovymi lomitky */
.hero__lead {
  grid-area: lead;
  display: flex;
  gap: 1.1em;
  max-width: 30ch;
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(0.78rem, 0.72rem + 0.25vw, 0.92rem);
  line-height: 1.85;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--chalk);
}
.hero__lead::before {
  content: "////";
  flex: none;
  letter-spacing: 0.05em;
  color: var(--violet);
}
.hero__actions {
  grid-area: actions;
  justify-self: end;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.75rem;
}

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "logo" "lead" "actions";
    align-content: center;
    gap: 1.5rem;
  }
  .hero__logo { justify-self: center; width: min(100%, 640px, calc(100svh - var(--nav-h) - 14rem)); min-width: min(100%, 300px); }
  .hero__lead { max-width: 40ch; }
  .hero__actions { justify-self: start; flex-direction: row; flex-wrap: wrap; }
}
/* na telefonu by dve tlacitka pod textem pusobila jako cookie lista; navigaci obstara menu */
@media (max-width: 680px) {
  .hero__actions { display: none; }
}

/* ---------- About ---------- */
.about { padding-block: clamp(5rem, 14vh, 9rem); border-top: 1px solid var(--line); }
.about__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: start;
}
.about__words {
  /* slova se vzdy vejdou do sloupce: velikost podle sirky sloupce, ne okna */
  container-type: inline-size;
  display: flex;
  flex-direction: column;
  margin: 0;
  font-weight: 800;
  font-stretch: 125%;
  line-height: 0.98;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--chalk);
}
.about__words span { font-size: min(10cqi, 5.2rem); }
.about__words span:nth-child(even) {
  color: transparent;
  -webkit-text-stroke: 1px var(--chalk);
  padding-left: 0.6em;
}
.about__body { max-width: 34rem; }
.about__list {
  list-style: none;
  margin: 2.2rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.about__list li {
  display: flex;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--chalk);
}
.about__list li::before { content: "+"; font-family: var(--font-mono); color: var(--violet); }

/* ---------- Next opening ---------- */
.next {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-block: calc(var(--nav-h) + 3rem) 4rem;
}
.next__card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 2.5rem clamp(2rem, 5vw, 5rem);
  align-items: end;
  padding: clamp(1.5rem, 4vw, 3.5rem);
  border: 1px solid var(--line);
  background: var(--panel);
}
.next__date { margin: 0; }
.next__day {
  display: block;
  font-size: clamp(4.5rem, 15vw, 12rem);
  font-weight: 900;
  font-stretch: 75%;
  line-height: 0.85;
  color: var(--chalk);
  will-change: transform;
}
.next__when {
  display: block;
  margin-top: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--violet);
}
.next__title {
  font-size: clamp(1.8rem, 1.2rem + 2.2vw, 3rem);
  font-weight: 800;
  font-stretch: 125%;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}
.next__artist { color: var(--chalk); font-size: 1.1em; }
.next__place {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  line-height: 1.6;
}
.next__note { max-width: 34ch; margin-bottom: 1.8rem; }
.placeholder-note {
  margin: 2.5rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- Archive ---------- */
.archive { padding-block: clamp(5rem, 14vh, 9rem) clamp(3rem, 8vh, 6rem); border-top: 1px solid var(--line); }
.archive__head {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 1rem 3rem;
  margin-bottom: clamp(3rem, 8vh, 5rem);
}
.archive__title {
  margin: 0;
  font-size: clamp(2.4rem, 0.8rem + 8vw, 8rem);
  font-weight: 900;
  font-stretch: 125%;
  line-height: 0.9;
  text-transform: uppercase;
  color: var(--chalk);
}
.archive__head p:last-child { max-width: 28ch; margin: 0; }

.year { margin-bottom: clamp(3rem, 10vh, 7rem); }
.year__label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.85rem;
  letter-spacing: 0.22em;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--line-strong);
  margin-bottom: 2.8rem;
}
.year__label::after { content: "+"; color: var(--violet); }
.year__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: start;
}
.work { margin: 0; }
.work:nth-child(3n+2) { margin-top: clamp(3rem, 8vw, 7rem); }
.work:nth-child(3n+3) { margin-top: clamp(1rem, 3vw, 2.5rem); }
.work__frame {
  position: relative;
  background: var(--void);
  padding: 0.6rem;
  border: 1px solid var(--line);
  will-change: transform;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.work__frame::before {
  content: "";
  position: absolute;
  top: -8px;
  left: -8px;
  width: 15px;
  height: 15px;
  background:
    linear-gradient(var(--chalk), var(--chalk)) center / 1px 100% no-repeat,
    linear-gradient(var(--chalk), var(--chalk)) center / 100% 1px no-repeat;
}
.work:hover .work__frame { border-color: var(--violet); box-shadow: 0 0 24px rgba(201, 60, 245, 0.25); }
.work__art { display: block; width: 100%; height: auto; }
.work figcaption { margin-top: 1rem; line-height: 1.4; }
.work__title { display: block; font-weight: 800; font-stretch: 112%; font-size: 1.15rem; color: var(--chalk); text-transform: uppercase; }
.work__artist { display: block; margin-top: 0.2rem; }
.work__meta {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

@media (max-width: 900px) {
  .year__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .work:nth-child(n) { margin-top: 0; }
  .work:nth-child(2n) { margin-top: 3rem; }
}
@media (max-width: 520px) {
  .year__grid { grid-template-columns: minmax(0, 1fr); }
  .work:nth-child(n) { margin-top: 0; }
  .work:nth-child(odd) { padding-right: 12%; }
  .work:nth-child(even) { padding-left: 12%; }
}

/* ---------- Artists ---------- */
.artists { padding-block: clamp(5rem, 14vh, 9rem); border-top: 1px solid var(--line); }
.artists__title {
  margin: 0;
  font-size: clamp(2.4rem, 1.2rem + 5vw, 6rem);
  font-weight: 900;
  font-stretch: 125%;
  line-height: 0.95;
  text-transform: uppercase;
  color: var(--chalk);
}
.artists__lead { max-width: 34ch; margin-top: 1.6rem; font-size: 1.15em; color: var(--chalk); }
.steps {
  list-style: none;
  counter-reset: step;
  margin: clamp(3rem, 8vh, 5rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 2.5rem clamp(1.2rem, 2.5vw, 2.5rem);
}
.steps li {
  counter-increment: step;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line-strong);
}
.steps li::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  margin-bottom: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: var(--violet);
}
.steps h3 { font-size: 1.25rem; font-weight: 800; font-stretch: 112%; margin-bottom: 0.6rem; }
.steps p { margin: 0; max-width: 28ch; }

/* ---------- Contact ---------- */
.contact {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-top: calc(var(--nav-h) + 3rem);
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.globe {
  position: absolute;
  top: calc(var(--nav-h) + 2rem);
  right: calc(var(--gutter) + 2rem);
  width: clamp(5rem, 12vw, 9rem);
  fill: none;
  stroke: var(--chalk);
  stroke-width: 0.6;
  opacity: 0.6;
}
.spark {
  position: absolute;
  top: calc(var(--nav-h) + 9rem);
  right: calc(var(--gutter) + clamp(9rem, 22vw, 18rem));
  width: clamp(1.8rem, 3vw, 2.6rem);
  fill: var(--chalk);
  opacity: 0.85;
}
.contact__inner {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.contact__title {
  margin: 0 0 1.4rem;
  font-size: clamp(1.4rem, 1rem + 1.6vw, 2.4rem);
  font-weight: 800;
  font-stretch: 125%;
  text-transform: uppercase;
  color: var(--chalk);
}
.contact__row {
  display: flex;
  align-items: baseline;
  margin: 0 0 clamp(4rem, 12vh, 7rem);
}
.contact__mail {
  font-size: clamp(2.2rem, 9.5vw, 8.5rem);
  font-weight: 900;
  font-stretch: 75%;
  line-height: 1;
  color: var(--chalk);
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: color 0.2s, text-shadow 0.2s;
}
.contact__mail:hover { color: var(--violet); text-shadow: 0 0 30px rgba(201, 60, 245, 0.5); }
.contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 2.2rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--chalk);
}
.contact__links a { text-decoration-color: var(--violet); text-underline-offset: 0.4em; }
.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  padding-block: 2rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.footer p { margin: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .about__grid { grid-template-columns: minmax(0, 1fr); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
  .next__card { grid-template-columns: minmax(0, 1fr); }
  .nav__bpm { display: none; }
  .spark { display: none; }
}
@media (max-width: 520px) {
  .steps { grid-template-columns: minmax(0, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-speed] { transform: none !important; }
}