/* Chromatica — UI is grayscale only; the art supplies all color. */

:root{
  --ink: #0A0A0A;
  --paper: #EDEDED;
  --paper-60: rgba(237,237,237,0.6);
  --paper-40: rgba(237,237,237,0.5);
  --paper-20: rgba(237,237,237,0.16);
  --paper-10: rgba(237,237,237,0.08);

  --font-display: 'Unbounded', sans-serif;
  --font-ui: 'Inter', sans-serif;

  /* modular scale, ratio 1.25 */
  --fs-100: 0.8rem;
  --fs-200: 1rem;
  --fs-300: 1.25rem;
  --fs-400: 1.563rem;
  --fs-500: 1.953rem;
  --fs-600: 2.441rem;
  --fs-700: 3.052rem;
  --fs-800: clamp(2.8rem, 3rem + 4vw, 5.6rem);

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6.5rem;
  --space-7: 10rem;

  --measure: 62ch;
}

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

html{
  background: var(--ink);
  color-scheme: dark;
}

body{
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-ui);
  font-size: var(--fs-200);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.no-scroll{ overflow: hidden; }

img, canvas{ display: block; max-width: 100%; }
canvas{ background: var(--ink); }

a{ color: inherit; }

h1, h2, h3{
  font-family: var(--font-display);
  font-weight: 500;
  margin: 0;
  line-height: 1.08;
}

p{ margin: 0; }

.measure{ max-width: var(--measure); }

.visually-hidden{
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.kicker{
  font-family: var(--font-ui);
  font-size: var(--fs-100);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-60);
}

/* ---------- Skip link ---------- */

.skip-link{
  position: absolute;
  top: -100px;
  left: var(--space-2);
  background: var(--paper);
  color: var(--ink);
  padding: var(--space-1) var(--space-2);
  z-index: 200;
  transition: top 0.15s;
}
.skip-link:focus{ top: var(--space-2); }

/* ---------- Focus ---------- */

a:focus-visible,
button:focus-visible,
.piece-tile:focus-visible{
  outline: 1px solid var(--paper);
  outline-offset: 4px;
}

/* ---------- Grain ---------- */
/* A faint fractal-noise texture over the whole page — keeps the flat
   #0A0A0A ground from reading as flat digital black, without adding
   any hue of its own (grayscale noise only, UI palette stays intact). */
.grain{
  position: fixed;
  inset: 0;
  z-index: 65;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  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='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}

/* ---------- Chrome: wordmark, index toggle, scroll progress ---------- */

.chrome-wordmark{
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 60;
  font-family: var(--font-display);
  font-size: var(--fs-200);
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--paper);
  transition: opacity 0.15s;
  /* invisible padding grows the tap target to 44px without shifting the
     glyph — box-sizing:border-box + the top/left anchor keep the text's
     start position fixed while the box extends down-right. */
  padding: 0 1.4rem 1.4rem 0;
}
.chrome-wordmark:hover,
.chrome-wordmark:focus-visible{ opacity: 0.6; }

.chrome-index-toggle{
  position: fixed;
  top: var(--space-3);
  right: var(--space-3);
  z-index: 60;
  background: none;
  border: none;
  font-family: var(--font-ui);
  font-size: var(--fs-100);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper);
  cursor: pointer;
  /* invisible padding grows the tap target to 44px — right/top anchor pins
     the visible label in place while the box extends down-left. */
  padding: 0.4em 0 1.6rem 1.2rem;
  transition: opacity 0.15s;
}
.chrome-index-toggle:hover,
.chrome-index-toggle:focus-visible{ opacity: 0.6; }

/* Scrolling content passes underneath the fixed wordmark/index toggle;
   a solid band (with a soft feathered bottom edge) keeps them on their
   own layer instead of colliding with whatever text happens to scroll past. */
.chrome-scrim{
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 72px;
  background: linear-gradient(to bottom, var(--ink) 0%, var(--ink) 75%, rgba(10,10,10,0) 100%);
  z-index: 59;
  pointer-events: none;
}

.scroll-progress-track{
  position: fixed;
  top: 0;
  right: 0;
  width: 2px;
  height: 100vh;
  background: var(--paper-10);
  z-index: 55;
}
.scroll-progress-fill{
  width: 100%;
  height: 100%;
  background: var(--paper-40);
  transform: scaleY(0);
  transform-origin: top;
}

/* ---------- Index overlay ---------- */

.index-overlay{
  position: fixed;
  inset: 0;
  background: var(--ink);
  z-index: 100;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-4);
}
.index-overlay[hidden]{ display: none; }

.index-close{
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  background: none;
  border: none;
  color: var(--paper);
  font-family: var(--font-ui);
  font-size: var(--fs-100);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity 0.15s;
  /* invisible padding grows the tap target to 44px — right/top anchor pins
     the visible label in place while the box extends down-left. */
  padding: 0.6rem 0 1.4rem 1.4rem;
}
.index-close:hover,
.index-close:focus-visible{ opacity: 0.6; }

.index-list{
  list-style: none;
  margin: 0;
  padding: 0;
}
.index-list li{
  border-top: 1px solid var(--paper-20);
}
.index-list li:last-child{ border-bottom: 1px solid var(--paper-20); }

.index-list a{
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 1rem + 3vw, 3.2rem);
  color: var(--paper);
  transition: opacity 0.15s;
}
.index-list a:hover, .index-list a:focus-visible{ opacity: 0.55; }

.index-list .idx-num{
  font-family: var(--font-ui);
  font-size: var(--fs-200);
  color: var(--paper-40);
  min-width: 2ch;
}

/* ---------- Sections ---------- */

section{
  padding: var(--space-6) var(--space-3);
  scroll-margin-top: var(--space-5);
}

.section-inner{
  max-width: 78rem;
  margin: 0 auto;
}

.section-head{
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.section-head h2{
  font-size: var(--fs-600);
}

/* ---------- Hero ---------- */

.hero{
  position: relative;
  height: 100vh;
  min-height: 560px;
  overflow: hidden;
  padding: 0;
}

.hero-canvas{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-scrim{
  position: absolute;
  inset: 0;
  z-index: 5;
  background: linear-gradient(to bottom, rgba(10,10,10,0) 40%, rgba(10,10,10,0.78) 100%);
  pointer-events: none;
}

.hero-content{
  position: relative;
  z-index: 10;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-6) var(--space-3) var(--space-4);
  pointer-events: none;
}

.hero-kicker{
  font-family: var(--font-ui);
  font-size: var(--fs-100);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--paper);
  margin-bottom: var(--space-2);
}

.hero-title{
  font-size: var(--fs-800);
  color: var(--paper);
  max-width: 16ch;
}

.hero-desc{
  margin-top: var(--space-2);
  max-width: 46ch;
  color: var(--paper);
  font-size: var(--fs-300);
}

.hero-hint{
  margin-top: var(--space-1);
  max-width: 46ch;
  color: var(--paper-60);
  font-size: var(--fs-200);
}

.scroll-cue{
  position: absolute;
  right: var(--space-3);
  bottom: var(--space-4);
  z-index: 10;
  display: flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--paper);
  text-decoration: none;
  font-size: var(--fs-100);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  mix-blend-mode: difference;
  pointer-events: auto;
  transition: opacity 0.15s;
  /* invisible padding grows the tap target to 44px — right/bottom anchor
     pins the visible label in place while the box extends up-left. */
  padding: 1.6rem 0 0 1rem;
}
.scroll-cue:hover,
.scroll-cue:focus-visible{ opacity: 0.6; }

.scroll-cue svg{
  width: 14px;
  height: 20px;
  animation: cue-bob 1.8s ease-in-out infinite;
}

@keyframes cue-bob{
  0%, 100%{ transform: translateY(0); }
  50%{ transform: translateY(6px); }
}

/* ---------- Gallery ---------- */

.gallery-grid{
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: minmax(220px, 1fr);
  gap: 1px;
  background: var(--paper-10);
  border: 1px solid var(--paper-10);
}

.piece-tile{
  position: relative;
  grid-column: span 12;
  min-height: 320px;
  background: var(--ink);
  border: none;
  padding: 0;
  cursor: pointer;
  text-align: left;
  color: inherit;
  font: inherit;
  display: flex;
  flex-direction: column;
}

.piece-tile--thinfilm{ grid-column: 1 / span 7; }
.piece-tile--voronoi{ grid-column: 8 / span 5; grid-row: 1 / span 2; min-height: 480px; }
.piece-tile--breathing{ grid-column: 1 / span 4; }
.piece-tile--interference{ grid-column: 5 / span 3; }

.piece-canvas-wrap{
  position: relative;
  flex: 1;
  overflow: hidden;
}
.piece-canvas-wrap canvas{
  width: 100%;
  height: 100%;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.piece-tile:hover .piece-canvas-wrap canvas,
.piece-tile:focus-visible .piece-canvas-wrap canvas{
  transform: scale(1.035);
}

.piece-open-cue{
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  z-index: 2;
  font-family: var(--font-ui);
  font-size: var(--fs-100);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--paper);
  padding: 0.4em 0.75em;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.2s, transform 0.2s;
}
.piece-tile:hover .piece-open-cue,
.piece-tile:focus-visible .piece-open-cue{
  opacity: 1;
  transform: translateY(0);
}

.piece-caption{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-2);
  border-top: 1px solid var(--paper-10);
  opacity: 0.7;
  transition: opacity 0.2s;
}
.piece-tile:hover .piece-caption,
.piece-tile:focus-visible .piece-caption{ opacity: 1; }

.piece-plate{
  font-family: var(--font-ui);
  font-size: var(--fs-100);
  color: var(--paper-40);
}
.piece-name{
  font-family: var(--font-display);
  font-size: var(--fs-300);
}

/* ---------- Practice ---------- */

.practice-grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: var(--space-5);
  align-items: start;
}

.practice-body p + p{ margin-top: var(--space-3); }
.practice-body p{ max-width: var(--measure); font-size: var(--fs-300); color: var(--paper-60); line-height: 1.65; }

/* ---------- Editions ---------- */

.editions-intro{
  font-size: var(--fs-300);
  color: var(--paper-60);
  max-width: var(--measure);
  margin-bottom: var(--space-4);
}

.editions-table{
  display: grid;
  grid-template-columns: 2ch 3fr 1.2fr 1.4fr 1.4fr;
  border-top: 1px solid var(--paper-20);
}

.editions-row{
  display: contents;
}

.editions-row > *{
  padding: var(--space-2) var(--space-2) var(--space-2) 0;
  border-bottom: 1px solid var(--paper-20);
  display: flex;
  align-items: center;
}

.editions-row.head > *{
  font-size: var(--fs-100);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-40);
  padding-top: var(--space-1);
  padding-bottom: var(--space-1);
}

.editions-num{ color: var(--paper-40); font-size: var(--fs-100); }
.editions-title{ font-family: var(--font-display); font-size: var(--fs-300); }
.editions-title small{
  display: block;
  font-family: var(--font-ui);
  font-size: var(--fs-100);
  color: var(--paper-40);
  margin-top: 0.3em;
}
.editions-price{ flex-direction: column; align-items: flex-start !important; gap: 0.15em; }
.editions-price .usd{ color: var(--paper-40); font-size: var(--fs-100); }

/* ---------- Commission ---------- */

.commission-grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-5);
  align-items: start;
}

.commission-body p{ font-size: var(--fs-300); color: var(--paper-60); max-width: var(--measure); line-height: 1.65; }
.commission-note{ margin-top: var(--space-3); color: var(--paper-40); font-size: var(--fs-200); }

.commission-cta{
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  border: 1px solid var(--paper-40);
  padding: var(--space-2) var(--space-3);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: var(--fs-300);
  transition: background-color 0.15s, color 0.15s;
}
.commission-cta:hover, .commission-cta:focus-visible{
  background: var(--paper);
  color: var(--ink);
}

/* ---------- Footer ---------- */

footer{
  padding: var(--space-4) var(--space-3) var(--space-5);
  border-top: 1px solid var(--paper-10);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2);
  color: var(--paper-40);
  font-size: var(--fs-100);
}

footer a{
  text-decoration: none;
  color: var(--paper-60);
  /* invisible padding grows the tap target to 44px tall; the matching
     negative margin cancels it back out so footer height is unaffected. */
  padding-block: 12px;
  margin-block: -12px;
}
footer a:hover, footer a:focus-visible{ color: var(--paper); }

/* ---------- Takeover ---------- */

.takeover{
  position: fixed;
  inset: 0;
  z-index: 150;
  background: var(--ink);
}
.takeover[hidden]{ display: none; }

.takeover-canvas-wrap{
  position: absolute;
  inset: 0;
}
.takeover-canvas-wrap canvas{
  width: 100%;
  height: 100%;
}

.takeover-info{
  position: absolute;
  left: var(--space-3);
  bottom: var(--space-3);
  z-index: 5;
  mix-blend-mode: difference;
  color: var(--paper);
  max-width: 60ch;
  pointer-events: none;
}

.takeover-plate{
  font-size: var(--fs-100);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--paper-60);
}

.takeover-title{
  font-size: var(--fs-600);
  margin-top: var(--space-1);
}

.takeover-technical{
  margin-top: var(--space-1);
  font-size: var(--fs-100);
  color: var(--paper-60);
}

.takeover-close{
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  z-index: 5;
  background: none;
  border: none;
  color: var(--paper);
  font-family: var(--font-ui);
  font-size: var(--fs-100);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  mix-blend-mode: difference;
  pointer-events: auto;
  transition: opacity 0.15s;
  /* invisible padding grows the tap target to 44px — right/top anchor pins
     the visible label in place while the box extends down-left. */
  padding: 0.6rem 0 1.4rem 1.4rem;
}
.takeover-close:hover,
.takeover-close:focus-visible{ opacity: 0.6; }

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

@media (prefers-reduced-motion: reduce){
  .scroll-cue svg{ animation: none; }
  .piece-caption{ transition: none; }
  .commission-cta{ transition: none; }
  .piece-canvas-wrap canvas{ transition: none; }
  .piece-tile:hover .piece-canvas-wrap canvas,
  .piece-tile:focus-visible .piece-canvas-wrap canvas{ transform: none; }
  .piece-open-cue{ transition: none; }
}

/* ---------- Responsive ---------- */

@media (max-width: 900px){
  .practice-grid, .commission-grid{
    grid-template-columns: 1fr;
  }
  .editions-table{
    grid-template-columns: 2ch 1fr 1fr;
  }
  .editions-row > .col-minted{ display: none; }

  /* Below 900px the 12-col asymmetric grid leaves the narrower tiles
     (breathing, interference) too tight for their captions to lay out
     on one line — stack to a single column before that happens. */
  .gallery-grid{
    grid-template-columns: 1fr;
  }
  .piece-tile,
  .piece-tile--thinfilm,
  .piece-tile--voronoi,
  .piece-tile--breathing,
  .piece-tile--interference{
    grid-column: 1;
    grid-row: auto;
    min-height: 46vw;
  }
}

@media (max-width: 640px){
  section{ padding: var(--space-5) var(--space-2); }

  .hero-content{ padding: var(--space-5) var(--space-2) var(--space-4); }
  .hero-title{ max-width: 100%; }
  .hero-hint{ max-width: 28ch; }
  .scroll-cue{ bottom: var(--space-1); }

  .piece-tile,
  .piece-tile--thinfilm,
  .piece-tile--voronoi,
  .piece-tile--breathing,
  .piece-tile--interference{
    min-height: 60vw;
  }

  .editions-table{
    grid-template-columns: 1fr;
  }
  .editions-row{
    display: grid;
    grid-template-columns: 1fr;
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--paper-20);
  }
  .editions-row.head{ display: none; }
  .editions-row > *{
    border-bottom: none;
    padding: 0.15em 0;
  }
  .editions-title{ display: block; }
  .editions-title small{ margin-top: 0.2em; }
  .editions-price{ flex-direction: row !important; gap: var(--space-2); }

  footer{ flex-direction: column; }
}