/* kaikurtukov.com – Schriften: Instrument Serif (wie Times New Roman Condensed) + Archivo (wie Akzidenz-Grotesk),
   Pixel: Silkscreen, Labels: JetBrains Mono. Farben "Afterimage". */

:root {
  --black: #08090A;
  --ink: #101417;
  --slate: #44545F;
  --glow: #A9BFD0;
  --paper: #EDEBE6;
  --accent: #B9CBD8;
  --muted: #8C9AA4;
  --line: rgba(185, 203, 216, .18);

  --serif: "Instrument Serif", "Times New Roman", Times, serif;
  --sans: "Archivo", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --bit: "Silkscreen", "JetBrains Mono", monospace;

  --pad: clamp(1.1rem, 4vw, 3.5rem);
  --hero-dim: .45;
}

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

html { scroll-behavior: smooth; background: var(--black); }

body {
  margin: 0;
  background: var(--black);
  color: var(--paper);
  font-family: var(--mono);
  font-size: .82rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Grain über allem */
body::after {
  content: "";
  position: fixed;
  inset: -100px;
  z-index: 50;
  pointer-events: none;
  opacity: .11;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%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 .9 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1.1s steps(6) infinite;
}
@keyframes grain {
  0% { transform: translate(0, 0); }
  20% { transform: translate(-37px, 22px); }
  40% { transform: translate(18px, -41px); }
  60% { transform: translate(-52px, -13px); }
  80% { transform: translate(44px, 35px); }
  100% { transform: translate(0, 0); }
}

a { color: inherit; }
img, video { display: block; max-width: 100%; }

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

.sr {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}
.skip {
  position: fixed; left: var(--pad); top: -4rem; z-index: 60;
  background: var(--paper); color: var(--black); padding: .5rem .8rem;
}
.skip:focus { top: .8rem; }

.bit { font-family: var(--bit); letter-spacing: .02em; }
.label {
  margin: 0; font: 400 .78rem/1.4 var(--mono); color: var(--muted);
}
.display {
  margin: 0;
  font: italic 400 clamp(3rem, 8vw, 6.5rem)/.95 var(--serif);
  letter-spacing: -.015em;
}

/* ---------- Kopfzeile ---------- */
.top {
  position: fixed; inset: 0 0 auto 0; z-index: 40;
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
  padding: calc(1rem + env(safe-area-inset-top, 0px)) var(--pad) 1rem;
}
/* Sobald gescrollt wird, bekommt die Kopfzeile selbst eine volle Hintergrundfarbe und darunter
   einen weichen Verlauf. Die volle Farbe braucht iPhone-Safari, um den Bereich um die Notch
   mit einzufärben (dort wird nur die Farbe einer festen Leiste am oberen Rand übernommen). */
.top { background-color: #08090A; transition: background-color .3s ease; }
.top::after {
  content: ""; position: absolute; top: 100%; left: 0; right: 0; height: 4.5rem; pointer-events: none;
  background: linear-gradient(#08090A 0%, rgba(8, 9, 10, .8) 32%, rgba(8, 9, 10, .4) 68%, transparent 100%);
  transition: opacity .3s ease;
}
html.at-top .top { background-color: transparent; }
html.at-top .top::after { opacity: 0; }
/* Auf Handys kein Schatten hinter der Kopfzeile (passt dort nicht sauber zur Notch) */
@media (hover: none) and (pointer: coarse), (max-width: 560px) {
  .top { background-color: transparent; mix-blend-mode: difference; }
  .top::after { display: none; }
}
.top-name { font: 400 .78rem/1 var(--bit); text-decoration: none; }
.top-left { display: flex; align-items: baseline; gap: clamp(.9rem, 2vw, 1.6rem); }
.lang { display: flex; gap: .55rem; }
.lang button {
  padding: .3rem 0; border: 0; background: none; color: inherit; cursor: pointer;
  font: 400 .78rem/1 var(--bit); opacity: .45;
}
.lang button:hover { opacity: .8; }
.lang button[aria-pressed="true"] { opacity: 1; text-decoration: underline; text-underline-offset: .35em; }
.top nav { display: flex; gap: clamp(.9rem, 2.5vw, 2rem); }
.top nav a { text-decoration: none; padding: .3rem 0; }
.top nav a:hover { text-decoration: underline; text-underline-offset: .35em; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: center;
  padding: 6rem var(--pad) 5rem;
  overflow: hidden;
  isolation: isolate;
}
.hero-media { position: absolute; inset: 0; z-index: -2; background: var(--black); }
.hero-media video, .hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-glow {
  position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(130% 80% at 50% 122%, var(--glow) 0%, var(--slate) 24%, var(--ink) 52%, var(--black) 78%);
}
.hero.has-media .hero-glow {
  background:
    radial-gradient(130% 70% at 50% 125%, rgba(169, 191, 208, .55) 0%, rgba(68, 84, 95, .35) 30%, transparent 60%),
    linear-gradient(rgba(8, 9, 10, var(--hero-dim)), rgba(8, 9, 10, var(--hero-dim)));
}
.hero-inner { width: 100%; }

.mark {
  margin: 0;
  font: italic 400 clamp(3.2rem, 8vw, 6rem)/.95 var(--name-font, var(--serif));
  letter-spacing: -.015em;
}
.mark img { display: block; max-width: 100%; height: auto; }

.claim {
  margin: .9rem 0 0;
  max-width: 34ch;
  color: var(--accent);
  font: 400 .88rem/1.5 var(--sans);
}
.actions { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.4rem; }
.actions .btn { padding: .55rem .8rem; font-size: .72rem; }

.btn {
  display: inline-block;
  padding: .85rem 1.25rem;
  border: 1px solid var(--paper);
  background: transparent; color: var(--paper);
  font: 500 .82rem/1 var(--mono);
  text-decoration: none; cursor: pointer;
  transition: background .15s steps(3), color .15s steps(3);
}
.btn:hover { background: var(--accent); border-color: var(--accent); color: var(--black); }
.btn-solid { background: var(--paper); color: var(--black); }

.hero-data, .hero-note {
  position: absolute; bottom: 1.2rem; margin: 0;
  font: 400 .7rem/1 var(--bit); color: var(--black);
}
.hero-data { right: var(--pad); }
.hero-note { left: var(--pad); }
.hero.has-media .hero-data { color: var(--paper); }
.hero.has-media .hero-note { display: none; }

/* ---------- Namensleiste ---------- */
.names {
  display: grid; grid-template-columns: 9rem 1fr; gap: 1rem 2rem; align-items: baseline;
  padding: clamp(2.5rem, 6vw, 4.5rem) var(--pad);
  border-bottom: 1px solid var(--line);
}
.names ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 0;
}
.names li {
  display: flex; align-items: center;
  font: italic 400 clamp(1.45rem, 2.8vw, 2.3rem)/1.2 var(--serif);
}
.names li:not(:last-child)::after {
  content: ""; width: 7px; height: 7px; margin: 0 clamp(.8rem, 1.6vw, 1.4rem);
  background: var(--accent); opacity: .7;
}
.names img { height: clamp(1.4rem, 2.6vw, 2.1rem); width: auto; filter: grayscale(1) brightness(0) invert(.93); }

/* ---------- Work ---------- */
.work { padding: clamp(3.5rem, 9vw, 7rem) var(--pad); }
.work-head {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 1.5rem;
  margin-bottom: clamp(1.5rem, 4vw, 3rem);
}
.filters { display: flex; flex-wrap: wrap; gap: .4rem; }
.filters button {
  display: flex; align-items: baseline; gap: .6rem;
  padding: .6rem .9rem;
  border: 1px solid var(--line); background: transparent; color: var(--paper);
  font: 400 .82rem/1 var(--mono); cursor: pointer;
}
.filters button:hover { border-color: var(--accent); }
.filters button[aria-pressed="true"] { background: var(--paper); border-color: var(--paper); color: var(--black); }
.filters .bit { font-size: .66rem; opacity: .7; }

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-auto-flow: dense;
  gap: clamp(.5rem, 1.2vw, 1rem);
}
.tile {
  position: relative; overflow: hidden;
  aspect-ratio: 4 / 3;
  padding: 0; border: 0; margin: 0;
  background: radial-gradient(150% 100% at var(--gx, 50%) 115%, #7C91A0 0%, var(--slate) 26%, var(--ink) 62%, var(--black) 95%);
  color: var(--paper); text-align: left; font: inherit;
}
.tile.wide { grid-column: span 2; aspect-ratio: 8 / 3; }
.tile.tall { grid-row: span 2; aspect-ratio: auto; }
button.tile { cursor: pointer; }

.tile video, .tile img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transition: transform .6s cubic-bezier(.2, .7, .2, 1);
}
.tile video { opacity: 0; transition: opacity .25s steps(4); }
.tile video.show, .tile video.as-poster { opacity: 1; }
button.tile:hover img { transform: scale(1.03); }

.tile-shade {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(8, 9, 10, .8), transparent 55%);
}
.tile-text { position: absolute; left: 1rem; right: 1rem; bottom: .9rem; }
.tile-title {
  display: block;
  font: 800 clamp(1rem, 1.5vw, 1.35rem)/1.05 var(--sans);
  font-stretch: 125%; text-transform: uppercase; letter-spacing: -.01em;
}
.tile-info { display: block; margin-top: .35rem; color: var(--accent); font-size: .76rem; }
.tile-tag {
  position: absolute; top: .9rem; left: 1rem;
  font: 400 .64rem/1 var(--bit); color: var(--accent);
}
.tile-empty {
  position: absolute; top: .9rem; right: 1rem;
  font: 400 .64rem/1 var(--bit); color: var(--muted);
}

/* Pixel-Reveal: Abdeckung fällt stufenweise weg */
.tile::after {
  content: ""; position: absolute; inset: 0; z-index: 2;
  background: var(--black);
  clip-path: inset(0 0 0 0);
  pointer-events: none;
}
.tile.in::after { clip-path: inset(0 0 100% 0); transition: clip-path .5s steps(7); transition-delay: var(--d, 0s); }

/* Stockendes Einblenden von unten (Kontakt-Bereich) */
.rise { opacity: 0; transform: translateY(1.4rem); }
.rise.in {
  opacity: 1; transform: none;
  transition: opacity .45s steps(6), transform .45s steps(6);
  transition-delay: var(--d, 0s);
}

/* ---------- Contact ---------- */
.contact {
  display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 6rem);
  padding: clamp(3.5rem, 9vw, 7rem) var(--pad);
  background: radial-gradient(120% 70% at 50% 130%, var(--slate) 0%, var(--ink) 45%, var(--black) 80%);
}
.contact-intro p {
  max-width: 30ch; margin: 1.5rem 0 0;
  font: 400 1.02rem/1.55 var(--sans);
}
.social { list-style: none; margin: 2.5rem 0 0; padding: 0; }
.social a {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
  max-width: 24rem; padding: .7rem 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
}
.social li:last-child a { border-bottom: 1px solid var(--line); }
.social .s-name { font: italic 400 1.7rem/1 var(--serif); }
.social a { align-items: center; }
.social .s-icon { display: flex; }
.social .s-icon svg { display: block; width: 1.75rem; height: 1.75rem; }
.social a:hover .s-name { text-decoration: underline; text-underline-offset: .2em; text-decoration-thickness: 1px; }

form { display: grid; gap: 1.3rem; align-content: start; }
form label { display: grid; gap: .45rem; color: var(--accent); }
form input, form textarea {
  width: 100%; padding: .7rem .8rem;
  border: 1px solid var(--line); border-radius: 0;
  background: rgba(8, 9, 10, .55); color: var(--paper);
  font: 400 1rem/1.45 var(--sans);
}
form textarea { resize: vertical; }
form input:focus-visible, form textarea:focus-visible { outline-offset: 0; border-color: var(--accent); }
form .btn { justify-self: start; }
.form-status { min-height: 1.4em; margin: 0; color: var(--paper); }

/* ---------- Fuß ---------- */
.foot {
  display: flex; justify-content: space-between; gap: 1rem;
  padding: 1.2rem var(--pad); color: var(--muted);
  border-top: 1px solid var(--line);
}
.foot .bit { font-size: .7rem; }
.foot nav { display: flex; gap: 1.4rem; }
.foot a { text-decoration: none; }
.foot a:hover { color: var(--paper); text-decoration: underline; text-underline-offset: .3em; }

/* ---------- Impressum / Datenschutz ---------- */
.legal h1 { margin-bottom: 2rem; }
.legal h2 { margin: 2.2rem 0 .5rem; font: 700 1.05rem/1.3 var(--sans); }
.legal p, .legal li, .legal address { font: 400 1rem/1.6 var(--sans); font-style: normal; max-width: 38em; }
.legal p { margin: 0 0 .9rem; }
.legal ul { margin: 0 0 .9rem; padding-left: 1.2rem; }
.legal hr { margin: 3.5rem 0; border: 0; border-top: 1px solid var(--line); }
.legal a { text-underline-offset: .2em; }

/* ---------- Projektfenster ---------- */
html.locked { overflow: hidden; }
.sheet {
  position: fixed; inset: 0; margin: auto;
  width: min(1080px, 94vw); height: 92svh; max-width: none; max-height: none;
  padding: 0; border: 1px solid var(--line);
  background: var(--ink); color: var(--paper);
  overflow-y: auto; overscroll-behavior: contain;
  transform-origin: 0 0;
}
.sheet::backdrop {
  background: rgba(8, 9, 10, .48);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  animation: backdrop-in .4s ease-out;
}
.sheet.closing::backdrop { opacity: 0; transition: opacity .3s; }
@keyframes backdrop-in { from { opacity: 0; } }
.sheet-close {
  position: sticky; top: .8rem; z-index: 3;
  display: block; width: fit-content; height: 2rem; margin: .8rem auto -2.8rem; padding: 0 .9rem;
  border: 0; background: rgba(8, 9, 10, .72); color: var(--paper);
  font: 400 .68rem/2rem var(--bit); cursor: pointer;
}
.sheet-close:hover { background: var(--paper); color: var(--black); }
.sheet-main video, .sheet-main img {
  display: block; width: 100%; max-height: 80svh; object-fit: contain; background: #000;
}
.frame { aspect-ratio: 16 / 9; background: #000; }
.frame iframe { display: block; width: 100%; height: 100%; border: 0; }
.ph {
  display: grid; place-items: center; aspect-ratio: 16 / 9;
  background: radial-gradient(150% 100% at 50% 115%, #7C91A0 0%, var(--slate) 26%, var(--ink) 62%, var(--black) 95%);
  color: var(--paper); font: 400 .68rem/1 var(--bit);
}
.ph.tallph { aspect-ratio: 4 / 5; }
.sheet-head { padding: 1.5rem clamp(1rem, 3vw, 2.2rem) .4rem; }
.sheet-head .display { font-size: clamp(2.2rem, 5vw, 4rem); }
.sheet-head .label { margin-top: .5rem; color: var(--accent); }
.sheet-text {
  margin: .8rem 0 0; padding: 0 clamp(1rem, 3vw, 2.2rem); max-width: 62ch;
  font: 400 1rem/1.55 var(--sans);
}
.sheet-gallery { columns: 2; column-gap: .6rem; padding: 1.4rem clamp(1rem, 3vw, 2.2rem) 2.2rem; }
.sheet-gallery > * { display: block; width: 100%; margin: 0 0 .6rem; break-inside: avoid; }
.sheet-gallery > .ph { display: grid; }
.sheet-sub {
  margin: 1.6rem 0 0; padding: 1rem clamp(1rem, 3vw, 2.2rem) 0;
  border-top: 1px solid var(--line);
  font: italic 400 clamp(1.5rem, 3vw, 2.1rem)/1.1 var(--serif);
}
.sheet-sub + .sheet-gallery { padding-top: .9rem; padding-bottom: .6rem; }
.sheet-body > .sheet-gallery:last-child { padding-bottom: 2.2rem; }
@media (max-width: 560px) { .sheet-gallery { columns: 1; } }

/* ---------- About (versteckte Seite) ---------- */
.about { max-width: 46rem; padding: 9rem var(--pad) 6rem; }
.about p { font: 400 1.05rem/1.6 var(--sans); max-width: 34em; }

/* ---------- Kleinere Bildschirme ---------- */
@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact { grid-template-columns: 1fr; }
  .names { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .tile.wide { grid-column: auto; aspect-ratio: 4 / 3; }
  .tile.tall { grid-row: auto; aspect-ratio: 4 / 5; }
  .top-name { display: none; }
  .top nav { margin-left: auto; }
  .hero-data { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  body::after { animation: none; }
  .tile::after { display: none; }
  .tile video, .tile img, .btn { transition: none; }
  .rise { opacity: 1; transform: none; }
  .sheet::backdrop { animation: none; }
}