/* MONO — fikcyjne studio projektowe. Demo ITTI. */

@font-face {
  font-family: "Instrument Sans";
  src: url("../../assets/fonts/instrument-sans-latin-wght-normal.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("../../assets/fonts/instrument-sans-latin-ext-wght-normal.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ---------- Tokens & palettes ---------- */
:root {
  --navy: #10121b;
  --lime: #d6ff42;
  --off: #eeede6;
  --cobalt: #1f3fd1;
  --coral: #ff6f5e;
  --cream: #ece6d8;
  --black: #151515;

  --bg: var(--navy);
  --fg: var(--off);
  --accent: var(--lime);
  --on-accent: var(--navy);
  --muted: rgba(238, 237, 230, .62);
  --line: rgba(238, 237, 230, .18);

  --gx: max(clamp(16px, 3.4vw, 56px), env(safe-area-inset-left), env(safe-area-inset-right));
  --bar-h: 64px;
  --ease: cubic-bezier(.7, 0, .2, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --font: "Instrument Sans", "Helvetica Neue", Arial, sans-serif;
}
html[data-palette="cobalt"] { --bg: #1a35b8; --fg: #f3efe6; --accent: var(--coral); --on-accent: #10121b; --muted: rgba(243, 239, 230, .72); --line: rgba(243, 239, 230, .26); }
html[data-palette="paper"]  { --bg: var(--cream); --fg: var(--black); --accent: var(--black); --on-accent: var(--cream); --muted: rgba(21, 21, 21, .64); --line: rgba(21, 21, 21, .2); }
html[data-palette="ink"]    { --bg: var(--off); --fg: var(--navy); --accent: var(--navy); --on-accent: var(--lime); --muted: rgba(16, 18, 27, .64); --line: rgba(16, 18, 27, .18); }
html[data-palette="lime"]   { --bg: var(--lime); --fg: var(--navy); --accent: var(--navy); --on-accent: var(--lime); --muted: rgba(16, 18, 27, .7); --line: rgba(16, 18, 27, .24); }

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  background: var(--bg);
  color: var(--fg);
  transition: background-color .7s var(--ease), color .7s var(--ease);
  scroll-behavior: smooth;
  scroll-padding-top: var(--bar-h);
  scrollbar-gutter: stable;
  -webkit-text-size-adjust: 100%;
}
html.is-locked { overflow: hidden; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
main { overflow-x: clip; }
[tabindex="-1"]:focus { outline: none; }
img { height: auto; }
a { color: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }
h1, h2, h3, p, ol, ul, dl, dd, figure { margin: 0; }
ol, ul { padding: 0; list-style: none; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.ico { width: 20px; height: 20px; flex: none; }
.ico--up { transform: rotate(180deg); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
::selection { background: var(--lime); color: var(--navy); }

.skip {
  position: fixed; left: var(--gx); top: 8px; z-index: 200;
  padding: 12px 18px; background: var(--lime); color: var(--navy);
  font-weight: 600; text-decoration: none; transform: translateY(-150%);
}
.skip:focus { transform: none; }

.eyebrow {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted);
}
.dot { width: 8px; height: 8px; background: var(--accent); flex: none; }

.display {
  font-size: clamp(2.4rem, 6.2vw, 6.4rem);
  line-height: .94; letter-spacing: -.045em; font-weight: 600;
  text-wrap: balance;
}
.display--sm { font-size: clamp(2.2rem, 4.6vw, 4.4rem); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 14px;
  min-height: 52px; padding: 0 22px;
  font-size: 15px; font-weight: 600; letter-spacing: .01em; text-decoration: none;
  border: 1.5px solid currentColor;
  transition: background-color .3s, color .3s, border-color .3s;
}
.btn .ico { transition: transform .35s var(--ease-out); }
.btn:hover .ico { transform: translateX(4px); }
.btn--accent { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.btn--accent:hover { background: transparent; color: var(--fg); border-color: var(--fg); }
.btn--line { color: var(--fg); }
.btn--line:hover { background: var(--fg); color: var(--bg); }
.btn--ink { background: var(--navy); color: var(--lime); border-color: var(--navy); }
.btn--ink:hover { background: transparent; color: var(--navy); }
.btn--xl { min-height: 68px; padding: 0 30px; font-size: 18px; }

.tags { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 14px; color: var(--muted); }
.tags li { display: flex; align-items: center; gap: 18px; }
.tags li + li::before { content: ""; width: 4px; height: 4px; background: currentColor; margin-left: -12px; margin-right: -6px; }

/* ---------- Header ---------- */
.bar {
  position: fixed; inset: 0 0 auto; z-index: 50;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  height: calc(var(--bar-h) + env(safe-area-inset-top));
  padding: env(safe-area-inset-top) var(--gx) 0;
  background: var(--bg); color: var(--fg);
  border-bottom: 1px solid transparent;
  transition: background-color .7s var(--ease), color .7s var(--ease), border-color .4s;
}
.bar.is-scrolled { border-bottom-color: var(--line); }
.bar__logo {
  justify-self: start; display: inline-flex; align-items: baseline; gap: 8px;
  min-height: 44px; align-items: center;
  font-weight: 700; font-size: 20px; letter-spacing: -.03em; text-decoration: none;
}
.bar__sub { font-weight: 400; font-size: 13px; letter-spacing: .04em; color: var(--muted); }
.bar__nav { display: flex; gap: clamp(18px, 2.6vw, 40px); }
.bar__nav a {
  position: relative; display: inline-flex; align-items: center; min-height: 44px;
  font-size: 15px; font-weight: 500; text-decoration: none;
}
.bar__nav a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 10px; height: 1.5px;
  background: currentColor; transform: scaleX(0); transform-origin: right;
  transition: transform .45s var(--ease-out);
}
.bar__nav a:hover::after, .bar__nav a.is-current::after { transform: scaleX(1); transform-origin: left; }
.bar__end { justify-self: end; display: flex; align-items: center; gap: 8px; }
.bar__back, .bar__menu {
  display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 12px;
  font-size: 14px; font-weight: 500; text-decoration: none;
  border: 1px solid var(--line); transition: border-color .3s, background-color .3s, color .3s;
}
.bar__back:hover, .bar__menu:hover { border-color: var(--fg); }
.bar__back .ico, .bar__menu .ico { width: 18px; height: 18px; }
.bar__menu { display: none; }

/* Menu dialog */
.menu {
  width: 100%; max-width: none; height: 100dvh; max-height: none; margin: 0; padding: 0;
  border: 0; background: var(--navy); color: var(--off);
  display: none; flex-direction: column;
  padding: env(safe-area-inset-top) var(--gx) max(24px, env(safe-area-inset-bottom));
}
.menu[open] { display: flex; animation: menu-in .5s var(--ease-out); }
.menu::backdrop { background: var(--navy); }
@keyframes menu-in { from { clip-path: inset(0 0 100% 0); } to { clip-path: inset(0); } }
.menu__top { display: flex; justify-content: space-between; align-items: center; height: var(--bar-h); }
.menu__logo { font-weight: 700; font-size: 20px; letter-spacing: -.03em; }
.menu__close { width: 48px; height: 48px; display: grid; place-items: center; border: 1px solid rgba(238, 237, 230, .25); }
.menu__nav { display: flex; flex-direction: column; margin-top: 6vh; }
.menu__nav a {
  display: flex; align-items: baseline; gap: 16px; padding: 12px 0;
  font-size: clamp(2.6rem, 12vw, 5rem); font-weight: 600; letter-spacing: -.045em; line-height: 1;
  text-decoration: none; border-bottom: 1px solid rgba(238, 237, 230, .15);
}
.menu__nav a span { font-size: 13px; font-weight: 500; letter-spacing: .06em; color: var(--lime); }
.menu[open] .menu__nav a { animation: rise .6s var(--ease-out) both; }
.menu[open] .menu__nav a:nth-child(2) { animation-delay: .05s; }
.menu[open] .menu__nav a:nth-child(3) { animation-delay: .1s; }
.menu[open] .menu__nav a:nth-child(4) { animation-delay: .15s; }
.menu__foot { margin-top: auto; display: flex; flex-direction: column; gap: 14px; --accent: var(--lime); --on-accent: var(--navy); --fg: var(--off); }
.menu__back { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; color: rgba(238, 237, 230, .7); text-decoration: none; }

@keyframes rise { from { transform: translateY(40%); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---------- Work ---------- */
.work__intro {
  padding: clamp(96px, 14vw, 200px) var(--gx) clamp(56px, 7vw, 110px);
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 20px; row-gap: 22px;
}
.work__intro .eyebrow { grid-column: 1 / -1; }
.work__intro .display { grid-column: 1 / 10; }
.work__lede { grid-column: 8 / 13; color: var(--muted); font-size: 18px; max-width: 46ch; }

.project {
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 20px;
  align-items: center;
  padding: clamp(80px, 12vw, 180px) var(--gx);
}
.project__art { grid-column: 1 / 8; min-width: 0; }
.project__copy { grid-column: 9 / 13; display: flex; flex-direction: column; align-items: flex-start; gap: 20px; min-width: 0; container-type: inline-size; }
.project__media { display: block; width: 100%; overflow: hidden; }
.project__media .art { width: 100%; height: auto; transition: transform 1s var(--ease-out); }
.project__media:hover .art { transform: scale(1.02); }
.art__shift { transition: transform .8s var(--ease-out); }
.project__media:hover .art__shift { transform: translate(-8px, 6px); }
.project__index { font-size: 13px; letter-spacing: .08em; color: var(--muted); }
.project__title { font-size: clamp(3rem, 25cqi, 10rem); max-width: 100%; font-weight: 700; letter-spacing: -.06em; line-height: .82; }
.project__claim { font-size: clamp(1.4rem, 2vw, 2rem); letter-spacing: -.025em; font-weight: 500; line-height: 1.1; }
.project__text { color: var(--muted); max-width: 42ch; }
.project__copy .btn { margin-top: 8px; }

/* ---------- Footer ---------- */
.foot {
  background: var(--navy); color: var(--off);
  padding: 32px var(--gx) max(32px, env(safe-area-inset-bottom));
  display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap;
  position: relative; z-index: 1;
}
.foot__note { font-size: 14px; color: rgba(238, 237, 230, .68); max-width: 70ch; }
.foot__links { display: flex; gap: 8px 22px; flex-wrap: wrap; }
.foot__links a { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; font-size: 14px; font-weight: 500; text-decoration: none; }
.foot__links a:hover { color: var(--lime); }

/* ---------- Reveal ---------- */
.js-reveal [data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease-out), transform .9s var(--ease-out); }
.js-reveal [data-reveal].is-in { opacity: 1; transform: none; }
.js-reveal .services [data-reveal]:nth-child(2), .js-reveal .steps [data-reveal]:nth-child(2) { transition-delay: .08s; }
.js-reveal .services [data-reveal]:nth-child(3), .js-reveal .steps [data-reveal]:nth-child(3) { transition-delay: .16s; }
.js-reveal .steps [data-reveal]:nth-child(4) { transition-delay: .24s; }

/* ---------- Case dialogs ---------- */
.case {
  --bg: var(--navy); --fg: var(--off); --accent: var(--lime); --on-accent: var(--navy);
  --muted: rgba(238, 237, 230, .66); --line: rgba(238, 237, 230, .18);
  width: 100%; max-width: none; height: 100dvh; max-height: none; margin: 0; padding: 0; border: 0;
  background: var(--bg); color: var(--fg);
  overflow-y: auto; overscroll-behavior: contain;
}
.case::backdrop { background: rgba(16, 18, 27, .6); }
.case--offset { --bg: #f3efe6; --fg: var(--navy); --accent: var(--cobalt); --on-accent: #f3efe6; --muted: rgba(16, 18, 27, .64); --line: rgba(16, 18, 27, .16); }
.case--still  { --bg: var(--cream); --fg: var(--black); --accent: var(--black); --on-accent: var(--cream); --muted: rgba(21, 21, 21, .64); --line: rgba(21, 21, 21, .18); }
.case__bar {
  position: sticky; top: 0; z-index: 3;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  min-height: calc(var(--bar-h) + env(safe-area-inset-top)); padding: env(safe-area-inset-top) var(--gx) 0;
  background: var(--bg); border-bottom: 1px solid var(--line);
}
.case__crumb { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.case__close {
  display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 14px;
  font-size: 14px; font-weight: 600; border: 1px solid var(--fg);
  transition: background-color .3s, color .3s;
}
.case__close:hover { background: var(--fg); color: var(--bg); }
.case__body {
  padding: clamp(40px, 6vw, 90px) var(--gx) max(48px, env(safe-area-inset-bottom));
  display: flex; flex-direction: column; gap: clamp(48px, 7vw, 110px);
}
.case[open] .case__body > * { animation: fade-up .8s var(--ease-out) both; }
.case[open] .case__body > :nth-child(2) { animation-delay: .1s; }
.case[open] .case__body > :nth-child(n+3) { animation-delay: .18s; }
.case__head { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 20px; row-gap: 22px; }
.case__head .eyebrow { grid-column: 1 / -1; }
.case__title { grid-column: 1 / 11; font-size: clamp(2.6rem, 6.6vw, 7rem); font-weight: 600; letter-spacing: -.055em; line-height: .92; text-wrap: balance; }
.case__lead { grid-column: 7 / 13; font-size: clamp(1.15rem, 1.5vw, 1.45rem); line-height: 1.35; letter-spacing: -.01em; }
.case__hero img, .case__gallery img, .viewer__stage img { width: 100%; aspect-ratio: 2400 / 1964; object-fit: cover; background: #1a1d29; }
.case__hero--art .art, .case__wide .art { width: 100%; height: auto; }
.case__grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 20px; row-gap: 40px; }
.case__text { grid-column: 1 / 8; display: flex; flex-direction: column; gap: 18px; font-size: 18px; max-width: 62ch; }
.case h3 { font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.facts { grid-column: 9 / 13; border-top: 1px solid var(--line); }
.facts div { padding: 14px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 9ch 1fr; gap: 14px; font-size: 15px; }
.facts dt { color: var(--muted); }
.case__deliver { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 20px; row-gap: 20px; }
.case__deliver h3 { grid-column: 1 / 4; }
.case__deliver ol { grid-column: 4 / 13; counter-reset: d; border-top: 1px solid var(--line); }
.case__deliver li {
  counter-increment: d; display: flex; gap: 24px; align-items: baseline;
  padding: 16px 0; border-bottom: 1px solid var(--line);
  font-size: clamp(1.1rem, 1.7vw, 1.6rem); letter-spacing: -.02em;
}
.case__deliver li::before { content: counter(d, decimal-leading-zero); font-size: 13px; color: var(--muted); min-width: 3ch; }
.case__gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.case figcaption { padding-top: 10px; font-size: 14px; color: var(--muted); }

.viewer { display: flex; flex-direction: column; gap: 22px; border-top: 1px solid var(--line); padding-top: 28px; }
.viewer__head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.viewer__head h3 { color: var(--fg); font-size: clamp(1.6rem, 2.6vw, 2.4rem); text-transform: none; letter-spacing: -.035em; font-weight: 600; margin-bottom: 8px; }
.viewer__note { color: var(--muted); max-width: 52ch; font-size: 15px; }
.viewer__stage { position: relative; background: #1a1d29; }
.viewer__mount[hidden] { display: none; }
.viewer__stage img[hidden] { display: none; }
.btn[aria-expanded="true"] { background: transparent; color: var(--fg); border-color: var(--fg); }

.case__next button {
  width: 100%; display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 8px 20px;
  padding: 28px 0 8px; border-top: 1.5px solid var(--fg); text-align: left;
}
.case__next span { grid-column: 1 / -1; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.case__next strong { font-size: clamp(3rem, 9vw, 9rem); font-weight: 700; letter-spacing: -.06em; line-height: .85; transition: transform .6s var(--ease-out); }
.case__next .ico { width: clamp(36px, 5vw, 72px); height: clamp(36px, 5vw, 72px); transition: transform .6s var(--ease-out); }
.case__next button:hover strong { transform: translateX(14px); }
.case__next button:hover .ico { transform: translateX(10px); }

/* Missing asset fallback (render not yet delivered) */
.is-missing { position: relative; min-height: 200px; }
img.is-missing { visibility: hidden; }

.noscript { position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 60; padding: 16px; background: var(--off); color: var(--navy); }


/* ---------- Opening story: chapters + controls (stage/mount/fallback geometry: scene.css) ---------- */
.sonar-chapter {
  position: absolute; z-index: 3;
  left: var(--gx);
  top: calc(var(--bar-h) + env(safe-area-inset-top) + 3vh);
  bottom: calc(96px + env(safe-area-inset-bottom));
  width: min(44vw, 640px);
  display: flex; flex-direction: column; justify-content: center; align-items: flex-start; gap: 22px;
  color: var(--off);
  --fg: var(--off); --accent: var(--lime); --on-accent: var(--navy); --muted: rgba(238, 237, 230, .68);
  opacity: 0; visibility: hidden; transform: translateY(28px);
  transition: opacity .55s var(--ease), transform .8s var(--ease-out), visibility 0s linear .55s;
}
.sonar-story[data-scene-step="0"] [data-chapter="0"],
.sonar-story[data-scene-step="1"] [data-chapter="1"],
.sonar-story[data-scene-step="2"] [data-chapter="2"] {
  opacity: 1; visibility: visible; transform: none;
  transition: opacity .7s var(--ease) .12s, transform .9s var(--ease-out) .12s, visibility 0s;
}
.chapter__mark {
  font-size: clamp(5.5rem, min(15.2vw, 30svh), 21rem);
  font-weight: 700; line-height: .78; letter-spacing: -.07em; margin-left: -.04em;
}
.chapter__letters { display: flex; overflow: hidden; padding-bottom: .04em; }
.chapter__letters span { display: block; animation: letter .95s var(--ease-out) both; }
.chapter__letters span:nth-child(2) { animation-delay: .07s; }
.chapter__letters span:nth-child(3) { animation-delay: .14s; }
.chapter__letters span:nth-child(4) { animation-delay: .21s; color: var(--lime); }
@keyframes letter { from { transform: translateY(105%); } to { transform: none; } }
.chapter__lead {
  font-size: clamp(1.2rem, 1.75vw, 1.7rem); line-height: 1.2; letter-spacing: -.02em; font-weight: 500;
  max-width: 26ch; text-wrap: pretty;
}
.chapter__links { display: flex; flex-wrap: wrap; gap: 10px; }
.chapter__title { font-size: clamp(3.4rem, 8vw, 9rem); font-weight: 700; letter-spacing: -.06em; line-height: .84; }
.chapter__title--md { font-size: clamp(2.4rem, 4.8vw, 5rem); line-height: .94; letter-spacing: -.05em; font-weight: 600; max-width: 12ch; text-wrap: balance; }
.chapter__claim { font-size: clamp(1.4rem, 2.3vw, 2.3rem); color: var(--lime); letter-spacing: -.03em; font-weight: 500; line-height: 1; }
.chapter__text { font-size: 17px; color: rgba(238, 237, 230, .8); max-width: 44ch; }
.chapter__specs { width: 100%; max-width: 480px; border-top: 1px solid rgba(238, 237, 230, .2); }
.chapter__specs div { display: grid; grid-template-columns: 8ch 1fr; gap: 14px; padding: 11px 0; border-bottom: 1px solid rgba(238, 237, 230, .2); font-size: 15px; }
.chapter__specs dt { color: var(--lime); font-weight: 600; }

.sonar-controls {
  position: absolute; z-index: 4;
  left: var(--gx); right: var(--gx); bottom: max(18px, env(safe-area-inset-bottom));
  display: flex; align-items: center; gap: 12px 24px; flex-wrap: wrap;
  color: var(--off); font-size: 13px;
  --fg: var(--off); --accent: var(--lime);
}
.sonar-skip {
  display: inline-flex; align-items: center; gap: 8px; min-height: 44px;
  font-weight: 600; text-decoration: none; color: var(--off);
}
.sonar-skip:hover { color: var(--lime); }
.sonar-skip .ico { width: 16px; height: 16px; }
.sonar-steps { position: relative; display: flex; gap: 22px; padding-top: 10px; margin-right: auto; }
.sonar-steps::before, .sonar-steps::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: rgba(238, 237, 230, .22); }
.sonar-steps::after { background: var(--lime); height: 2px; top: -.5px; transform-origin: left; transform: scaleX(var(--scene-p, 0)); }
.sonar-steps li { display: flex; gap: 8px; color: rgba(238, 237, 230, .45); transition: color .4s; }
.sonar-steps span { font-weight: 600; }
.sonar-story[data-scene-step="0"] [data-step="0"],
.sonar-story[data-scene-step="1"] [data-step="1"],
.sonar-story[data-scene-step="2"] [data-step="2"] { color: var(--off); }
.sonar-toggles { display: flex; gap: 8px; flex-wrap: wrap; }
.sonar-toggle {
  display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 14px;
  border: 1px solid rgba(238, 237, 230, .3); font-size: 13px; font-weight: 500;
  background: rgba(16, 18, 27, .55);
  transition: border-color .3s, background-color .3s, color .3s;
}
.sonar-toggle:hover { border-color: var(--off); }
.sonar-toggle .ico { width: 16px; height: 16px; }
.sonar-toggle[data-sonar-play][aria-pressed="true"] .ico { color: var(--lime); }
.sonar-toggle[data-scene-motion][aria-pressed="true"] { background: var(--off); color: var(--navy); }
.sonar-status { min-height: 1em; color: rgba(238, 237, 230, .62); }
.sonar-status:empty { display: none; }

/* ---------- Project index ---------- */
.index { padding: 0 var(--gx) clamp(72px, 9vw, 140px); }
.index li:last-child .index__row { border-bottom: 1px solid var(--line); }
.index__row {
  width: 100%; text-align: left;
  display: grid; grid-template-columns: 4ch minmax(0, 1.2fr) minmax(0, 2fr) auto 28px; align-items: center; column-gap: clamp(14px, 2vw, 32px);
  padding: clamp(18px, 2.2vw, 30px) 0; border-top: 1px solid var(--line);
}
.index__no { font-size: 13px; font-weight: 600; color: var(--muted); }
.index__name { font-size: clamp(1.9rem, 4.2vw, 4.4rem); font-weight: 600; letter-spacing: -.05em; line-height: 1; transition: transform .6s var(--ease-out); }
.index__desc { font-size: 15px; color: var(--muted); max-width: 46ch; }
.index__swatch { width: 64px; height: 40px; transition: width .6s var(--ease-out); }
.index__swatch--sonar { background: radial-gradient(circle at 70% 50%, var(--lime) 0 7px, transparent 7.5px), #1d2131; outline: 1px solid var(--line); }
.index__swatch--offset { background: linear-gradient(90deg, var(--cobalt) 0 58%, var(--coral) 58%); }
.index__swatch--still { background: linear-gradient(var(--black), var(--black)) 70% 60% / 10px 14px no-repeat, var(--cream); }
.index__go { width: 26px; height: 26px; transition: transform .5s var(--ease-out); }
.index__row:hover .index__name { transform: translateX(10px); }
.index__row:hover .index__swatch { width: 120px; }
.index__row:hover .index__go { transform: translateX(6px); }

/* ---------- STILL spread ---------- */
.spread {
  --turn: 1; --draw: 1; --leaf: 1;
  padding: clamp(80px, 10vw, 160px) var(--gx);
  perspective: 2600px;
}
.spread__book {
  position: relative;
  display: grid; grid-template-columns: minmax(0, 1fr) 34px minmax(0, 1fr);
  min-height: min(88svh, 64vw);
  transform-style: preserve-3d;
  border-bottom: 6px double rgba(21, 21, 21, .35);
}
.spread__page {
  position: relative; container-type: inline-size;
  padding: clamp(22px, 3vw, 48px) clamp(22px, 3vw, 48px) clamp(48px, 5vw, 72px);
  display: flex; flex-direction: column; gap: 18px; min-width: 0;
}
.spread__page--verso { background: linear-gradient(to left, rgba(21, 21, 21, .1), rgba(21, 21, 21, 0) 9%), #e8e1d2; }
.spread__page--recto { background: linear-gradient(to right, rgba(21, 21, 21, .1), rgba(21, 21, 21, 0) 9%), #f3eee3; align-items: flex-start; }
.spread__runhead {
  display: flex; justify-content: space-between; gap: 16px; width: 100%;
  padding-bottom: 10px; border-bottom: 1px solid rgba(21, 21, 21, .3);
  font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
}
.spread__figure { flex: 1; display: flex; flex-direction: column; justify-content: center; gap: 12px; }
.spread__drawing { width: 100%; max-height: 62svh; height: auto; }
.spread__figure figcaption { font-size: 13px; color: rgba(21, 21, 21, .62); max-width: 44ch; }
.spread__folio { position: absolute; bottom: 20px; font-size: 12px; font-weight: 600; }
.spread__page--verso .spread__folio { left: clamp(22px, 3vw, 48px); }
.spread__page--recto .spread__folio { right: clamp(22px, 3vw, 48px); }
.spread__spine {
  background: var(--black); color: var(--cream);
  writing-mode: vertical-rl;
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 0; font-size: 11px; font-weight: 600; letter-spacing: .22em; text-transform: uppercase;
}
.spread__title { margin-top: auto; font-size: clamp(3.4rem, 34cqi, 14rem); font-weight: 700; letter-spacing: -.065em; line-height: .8; }
.spread__claim { font-size: clamp(1.4rem, 2.2vw, 2.2rem); font-weight: 500; letter-spacing: -.03em; line-height: 1.05; }
.spread__text { color: rgba(21, 21, 21, .72); max-width: 46ch; }
.spread .tags { color: rgba(21, 21, 21, .64); }
.spread__page--recto .btn { margin-bottom: auto; }

/* sketch layers driven by --draw (0..1) */
.layer--sketch path { stroke-dasharray: 1 1; stroke-dashoffset: calc(1 - var(--draw)); }
.layer--grid { transform: translateY(calc((1 - var(--draw)) * 24px)); opacity: calc(.3 + var(--draw) * .7); }
.layer--shadow { transform-box: fill-box; transform-origin: left top; transform: skewX(calc((1 - var(--draw)) * 40deg)); opacity: var(--draw); }
.layer--fill { opacity: clamp(0, calc((var(--draw) - .8) * 5), 1); }
.layer--notes { opacity: clamp(0, calc((var(--draw) - .5) * 2), 1); }

/* turning leaf: cover on the recto, turns over the spine onto the verso as tracing paper */
.spread__leaf {
  position: absolute; top: 0; bottom: 0; right: 0; left: calc(50% + 17px);
  transform-origin: left center; transform-style: preserve-3d;
  transform: rotateY(calc(var(--turn) * -180deg));
  opacity: calc(1 - var(--leaf));
  pointer-events: none; z-index: 2;
}
.spread__leaf-face { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.spread__leaf-face--front {
  background: var(--cream); border-left: 1px solid rgba(21, 21, 21, .25);
  display: grid; grid-template-rows: auto 1fr auto auto; padding: clamp(22px, 3vw, 48px); gap: 10px; color: var(--black);
}
.leaf__brand { font-size: 13px; font-weight: 600; letter-spacing: .4em; }
.leaf__art { width: min(70%, 360px); align-self: center; justify-self: center; }
.leaf__title { font-size: clamp(1.6rem, 2.6vw, 2.6rem); font-weight: 600; letter-spacing: -.035em; line-height: 1; }
.leaf__vol { font-size: 13px; color: rgba(21, 21, 21, .6); }
.spread__leaf-face--back {
  transform: rotateY(180deg);
  background:
    repeating-linear-gradient(90deg, rgba(21, 21, 21, .08) 0 1px, transparent 1px 50px),
    rgba(246, 242, 234, .62);
}
.spread:focus-within .spread__leaf { opacity: 0; }

/* ---------- Studio desk ---------- */
.desk { padding: clamp(96px, 12vw, 180px) var(--gx) clamp(72px, 8vw, 120px); }
.desk__head {
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 20px; row-gap: 22px;
  margin-bottom: clamp(40px, 5vw, 80px);
}
.desk__head .eyebrow { grid-column: 1 / -1; }
.desk__title { grid-column: 1 / 8; font-size: clamp(2.4rem, 5.6vw, 6rem); line-height: .94; letter-spacing: -.05em; font-weight: 600; text-wrap: balance; }
.desk__lede { grid-column: 8 / 13; align-self: end; color: var(--muted); font-size: 18px; max-width: 44ch; }
.desk__board { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: clamp(20px, 3vw, 48px); align-items: stretch; }
.desk__board > * { min-width: 0; }

.desk__screen {
  position: relative; overflow: hidden; aspect-ratio: 16 / 11;
  width: 100%; min-width: 0; max-width: 100%; contain: inline-size layout paint;
  background: #0b0d14; border: 1px solid var(--line);
  container-type: inline-size; perspective: 1400px;
}
.desk__grid {
  position: absolute; inset: -20%;
  background:
    repeating-linear-gradient(90deg, rgba(238, 237, 230, .1) 0 1px, transparent 1px calc(100% / 18)),
    repeating-linear-gradient(0deg, rgba(238, 237, 230, .1) 0 1px, transparent 1px calc(100% / 12));
  transition: transform 1s var(--ease), opacity .6s;
}
.desk__stack { position: absolute; inset: 0; width: 100%; height: 100%; display: grid; place-items: center; transform-style: preserve-3d; transition: transform 1s var(--ease); }
.desk__layer {
  grid-area: 1 / 1; display: flex; justify-content: center; max-width: 100%;
  font-size: 23cqi; font-weight: 700; letter-spacing: -.07em; line-height: .8; color: var(--off);
  transition: transform 1s var(--ease), opacity .6s, color .4s;
}
.desk__layer span { display: block; transition: transform .8s var(--ease-out); }
.desk__layer--top span:last-child { color: var(--lime); }
.desk__layer:not(.desk__layer--top) { color: transparent; -webkit-text-stroke: 1px var(--lime); opacity: 0; }
.desk__marks { position: absolute; inset: 0; pointer-events: none; font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: rgba(238, 237, 230, .55); }
.desk__mark { position: absolute; transition: opacity .5s; }
.desk__mark--a { left: 14px; top: 12px; }
.desk__mark--b { left: 14px; bottom: 12px; }
.desk__mark--c { right: 14px; top: 12px; color: var(--lime); }

/* mode: Znak — letters locked in the grid */
.desk[data-mode="znak"] .desk__layer--top span:nth-child(2) { transform: translateY(-4cqi); }
.desk[data-mode="znak"] .desk__layer--top span:nth-child(3) { transform: translateY(4cqi); }
/* mode: Przestrzeń — layered perspective */
.desk[data-mode="przestrzen"] .desk__grid { transform: rotateX(58deg) rotateZ(-24deg) scale(1.2); opacity: .55; }
.desk[data-mode="przestrzen"] .desk__stack { transform: rotateX(48deg) rotateZ(-24deg) scale(.82); }
.desk[data-mode="przestrzen"] .desk__layer { opacity: 1; transform: translateZ(calc(var(--l) * -7cqi)); }
.desk[data-mode="przestrzen"] .desk__layer[style*="--l:1"] { -webkit-text-stroke-color: var(--off); }
.desk[data-mode="przestrzen"] .desk__mark--a, .desk[data-mode="przestrzen"] .desk__mark--b { opacity: 0; }
/* mode: Ruch — typographic movement with echo trails */
.desk[data-mode="ruch"] .desk__grid { opacity: .35; animation: grid-run 6s linear infinite; }
.desk[data-mode="ruch"] .desk__layer { opacity: 1; }
.desk[data-mode="ruch"] .desk__layer[style*="--l:1"] { opacity: .5; }
.desk[data-mode="ruch"] .desk__layer[style*="--l:2"] { opacity: .25; }
.desk[data-mode="ruch"] .desk__layer span { animation: wave 2.2s var(--ease) infinite alternate; animation-delay: calc(var(--i) * .14s + var(--l) * .1s); }
.desk[data-mode="ruch"] .desk__mark--a, .desk[data-mode="ruch"] .desk__mark--b { opacity: 0; }
@keyframes wave { from { transform: translateY(-9cqi); } to { transform: translateY(9cqi); } }
@keyframes grid-run { to { transform: translateX(calc(100% / 18 * 1.4)); } }

.desk__panel { display: flex; flex-direction: column; gap: clamp(24px, 3vw, 40px); }
.desk__channels { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
.channel {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 16px 6px 18px; text-align: center;
  border-left: 1px solid var(--line);
}
.channel:first-child { border-left: 0; }
.channel__no { font-size: 12px; font-weight: 600; color: var(--muted); }
.channel__track { position: relative; width: 3px; height: clamp(84px, 9vw, 132px); background: var(--line); }
.channel__knob {
  position: absolute; left: 50%; top: 78%; width: 36px; height: 14px;
  background: var(--off); transform: translate(-50%, -50%);
  transition: top .6s var(--ease-out), background-color .3s;
}
.channel__knob::after { content: ""; position: absolute; left: 6px; right: 6px; top: 6px; height: 2px; background: var(--navy); }
.channel[aria-pressed="true"] .channel__knob { top: 12%; background: var(--lime); }
.channel:hover .channel__knob { background: var(--lime); }
.channel__name { font-size: clamp(1rem, 1.5vw, 1.25rem); font-weight: 600; letter-spacing: -.02em; }
.channel__sub { font-size: 12px; color: var(--muted); }
.channel[aria-pressed="true"] .channel__name { color: var(--lime); }
.desk__note { display: flex; flex-direction: column; gap: 12px; }
.desk__note[hidden] { display: none; }
.desk__note h3 { font-size: clamp(1.3rem, 1.9vw, 1.7rem); font-weight: 600; letter-spacing: -.03em; line-height: 1.15; }
.desk__note p { color: var(--muted); }
.desk__list { font-size: 13px; letter-spacing: .02em; }

.method {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 4fr); gap: 20px;
  margin-top: clamp(64px, 8vw, 120px); padding-top: 18px; border-top: 1.5px solid var(--fg);
}
.method__title { font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.method__list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; font-size: 16px; }
.method__list li { display: flex; flex-direction: column; gap: 10px; }
.method__list span { font-size: 12px; font-weight: 600; color: var(--lime); }

/* ---------- Contact docket ---------- */
.contact {
  padding: clamp(80px, 10vw, 160px) var(--gx) clamp(96px, 11vw, 170px);
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2.3fr); gap: clamp(28px, 5vw, 80px); align-items: start;
}
.contact__intro { display: flex; flex-direction: column; gap: 16px; position: sticky; top: calc(var(--bar-h) + 32px); }
.contact__text { color: var(--muted); font-size: 18px; max-width: 34ch; }
.docket {
  --fg: var(--navy); --accent: var(--navy); --on-accent: var(--lime);
  --muted: rgba(16, 18, 27, .68); --line: rgba(16, 18, 27, .24);
  position: relative;
  display: grid; grid-template-columns: 92px minmax(0, 1fr);
  background: var(--lime); color: var(--navy);
  transform: rotate(-.8deg);
  transition: transform .8s var(--ease-out);
}
.docket:focus-within, .docket:hover { transform: none; }
.docket::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -10px; height: 10px;
  background:
    linear-gradient(135deg, var(--lime) 50%, transparent 50%) 0 0 / 14px 10px repeat-x,
    linear-gradient(-135deg, var(--lime) 50%, transparent 50%) 0 0 / 14px 10px repeat-x;
}
.docket__stub {
  display: flex; flex-direction: column; align-items: center; justify-content: space-between; gap: 18px;
  padding: 26px 0; border-right: 2px dashed rgba(16, 18, 27, .45);
}
.docket__stub-no, .docket__stub-label { writing-mode: vertical-rl; transform: rotate(180deg); font-size: 12px; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; }
.docket__stub-no { font-size: 15px; letter-spacing: .1em; }
.docket__code { width: 30px; height: 150px; }
.docket__body { padding: clamp(24px, 3.4vw, 52px); display: flex; flex-direction: column; gap: 26px; min-width: 0; }
.docket__head {
  display: flex; justify-content: space-between; gap: 16px; padding-bottom: 12px; border-bottom: 1.5px solid var(--navy);
  font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
}
.docket__title { font-size: clamp(2rem, 3.8vw, 3.6rem); font-weight: 600; letter-spacing: -.045em; line-height: .95; }
.docket__field { border: 0; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; min-width: 0; }
.docket__field legend { display: flex; gap: 10px; padding: 0; margin-bottom: 12px; font-size: 12px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; }
.docket__field legend span { opacity: .55; }
.opt { position: relative; display: inline-flex; }
.opt input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.opt span {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px;
  border: 1.5px solid var(--navy); font-size: 15px; font-weight: 500;
  transition: background-color .25s, color .25s;
}
.opt:hover span { background: rgba(16, 18, 27, .08); }
.opt input:checked + span { background: var(--navy); color: var(--lime); }
.opt input:focus-visible + span { outline: 2px solid var(--navy); outline-offset: 3px; }
.docket__summary { padding-top: 18px; border-top: 1.5px dashed rgba(16, 18, 27, .5); display: flex; flex-direction: column; gap: 8px; }
.docket__label { font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.docket__brief { font-size: clamp(1.3rem, 2.2vw, 2rem); line-height: 1.2; letter-spacing: -.025em; font-weight: 500; max-width: 34ch; }
.docket__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; }
.btn--inkline { color: var(--navy); border-color: var(--navy); }
.btn--inkline:hover { background: var(--navy); color: var(--lime); }
.docket__status { font-size: 14px; font-weight: 600; }
.docket__note { font-size: 13px; color: var(--muted); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .bar { grid-template-columns: 1fr auto; }
  .bar__nav { display: none; }
  .bar__menu { display: inline-flex; }
  .project { row-gap: 40px; }
  .project__art { grid-column: 1 / -1; grid-row: 1; }
  .project__copy { grid-column: 1 / -1; grid-row: 2; }
  .sonar-chapter { width: min(52vw, 560px); }
  .index__row { grid-template-columns: 4ch minmax(0, 1fr) 28px; row-gap: 6px; }
  .index__desc { grid-column: 2; grid-row: 2; }
  .index__swatch { display: none; }
  .index__go { grid-column: 3; grid-row: 1; }
  .desk__board { grid-template-columns: 1fr; }
  .method__list { grid-template-columns: 1fr 1fr; }
  .contact { grid-template-columns: 1fr; }
  .contact__intro { position: static; }
}

@media (max-width: 700px) {
  body { font-size: 16px; }
  .bar__sub { display: none; }
  .bar__back span { font-size: 13px; }

  /* chapters in the upper part, model below (scene.css), controls at the bottom */
  .sonar-chapter {
    top: calc(var(--bar-h) + env(safe-area-inset-top) + 14px); bottom: auto;
    left: var(--gx); right: var(--gx); width: auto;
    justify-content: flex-start; gap: 14px;
  }
  .chapter__mark { font-size: 27vw; }
  .chapter__lead { font-size: 1.1rem; max-width: 30ch; }
  .chapter__links .btn { min-height: 46px; padding: 0 16px; font-size: 14px; }
  .chapter__title { font-size: 17vw; }
  .chapter__title--md { font-size: 9.4vw; }
  .chapter__claim { font-size: 1.3rem; }
  .chapter__text { font-size: 15px; }
  .chapter__specs { display: none; }
  .sonar-chapter[data-chapter="2"] .chapter__links .btn--line { display: none; }
  .sonar-controls { gap: 8px; }
  .sonar-steps { display: none; }
  .sonar-skip { margin-right: auto; }
  .sonar-toggles { width: 100%; order: 3; }
  .sonar-toggle { flex: 1 1 0; justify-content: center; padding: 0 10px; font-size: 12.5px; }
  .sonar-status { order: 4; width: 100%; }

  .work__intro, .desk__head, .case__head, .case__grid, .case__deliver { display: flex; flex-direction: column; }
  .work__lede { font-size: 17px; }
  .index__desc { font-size: 14px; }

  .project { padding-block: 72px; }
  .project__media { margin-inline: calc(-1 * var(--gx)); width: calc(100% + 2 * var(--gx)); }
  .project__copy .btn { align-self: stretch; justify-content: space-between; }

  .spread { padding-inline: 0; }
  .spread__book { grid-template-columns: 1fr; min-height: 0; }
  .spread__spine { writing-mode: horizontal-tb; padding: 10px var(--gx); }
  .spread__page { padding-inline: var(--gx); }
  .spread__leaf { display: none; }
  .spread__title { margin-top: 12px; }
  .spread__page--recto .btn { align-self: stretch; justify-content: space-between; }

  .desk__screen { aspect-ratio: 4 / 3; width: calc(100% + 2 * var(--gx)); max-width: none; margin-inline: calc(-1 * var(--gx)); border-inline: 0; }
  .channel { padding-inline: 2px; }
  .channel__sub { font-size: 11px; }
  .method { grid-template-columns: 1fr; }
  .method__list { grid-template-columns: 1fr; gap: 14px; }
  .method__list li { flex-direction: row; gap: 14px; }

  .docket { grid-template-columns: 1fr; transform: none; }
  .docket__stub { flex-direction: row; padding: 12px 20px; border-right: 0; border-bottom: 2px dashed rgba(16, 18, 27, .45); }
  .docket__stub-no, .docket__stub-label { writing-mode: horizontal-tb; transform: none; }
  .docket__code { width: 80px; height: 22px; }
  .docket__actions .btn { flex: 1 1 100%; justify-content: space-between; }
  .contact__text { font-size: 16px; }

  .case__gallery { grid-template-columns: 1fr; }
  .case__hero, .case__gallery figure img, .case__wide { margin-inline: calc(-1 * var(--gx)); }
  .case__wide figcaption, .case__gallery figcaption { padding-inline: var(--gx); }
  .case__text { font-size: 17px; }
  .facts div { grid-template-columns: 1fr; gap: 2px; }
  .case__close span { display: none; }
  .case__close { width: 48px; justify-content: center; padding: 0; }
  .viewer__head .btn { width: 100%; justify-content: space-between; }
  .foot { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 380px) {
  .bar__back span { display: none; }
  .sonar-toggle span { font-size: 12px; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; transition: none; }
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; transition-delay: 0s !important; }
  .spread, .spread[style] { --turn: 1 !important; --draw: 1 !important; --leaf: 1 !important; }
  .js-reveal [data-reveal] { opacity: 1; transform: none; }
}

.desk:not(.is-on-screen) .desk__layer span { animation-play-state: paused; }