:root {
  --ink: #060506;
  --denim-deep: #1b2432;
  --blu: #cee5ff;
  --blu-deep: #cee5ff;
  --blu-light: #cee5ff;
  --dusty: #cee5ff; /* azzurro */
  --bone: #ece7e1;
  --bone-dim: #b9b3ad;

  --display: "Bodoni Moda", "Didot", serif;
  --text: "Hanken Grotesk", system-ui, sans-serif;

  --gutter: clamp(16px, 4vw, 56px);
  --measure: 34rem;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
html.lenis, html.lenis body { height: auto; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--bone);
  font: 400 1.0625rem/1.55 var(--text);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { margin: 0; font-weight: 400; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--dusty); outline-offset: 3px; }

.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 16px; top: -60px; z-index: 50; background: var(--bone); color: var(--ink); padding: .6rem 1rem; }
.skip:focus { top: 16px; }

/* Barra */
.bar {
  position: fixed; inset: 0 0 auto 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--gutter) 28px;
  background: linear-gradient(to bottom, color-mix(in srgb, var(--ink) 82%, transparent), transparent);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  -webkit-mask-image: linear-gradient(to bottom, #000 60%, transparent); mask-image: linear-gradient(to bottom, #000 60%, transparent);
}
.wordmark {
  font: italic 500 1.75rem/1 var(--display);
  text-decoration: none; letter-spacing: -.01em;
}
.bar nav { display: flex; gap: clamp(14px, 2.4vw, 36px); align-items: center; }
.bar nav a { text-decoration: none; font-size: .9375rem; }
.bar nav a:not(.bar-cta) { background: linear-gradient(var(--dusty), var(--dusty)) 0 100% / 0 1px no-repeat; padding-bottom: 3px; transition: background-size .35s; }
.bar nav a:not(.bar-cta):hover { background-size: 100% 1px; }
.bar-cta { border: 1px solid currentColor; border-radius: 999px; padding: .45rem 1.1rem; transition: background-color .25s, color .25s; }
.bar-cta:hover { background: var(--bone); color: var(--ink); }
@media (max-width: 640px) {
  .bar nav a:not(.bar-cta) { display: none; }
}

/* Bottoni */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 52px; padding: 0 1.6rem;
  border-radius: 999px; border: 1px solid transparent;
  font: 500 1rem/1 var(--text); text-decoration: none; cursor: pointer;
  transition: background-color .25s, color .25s, border-color .25s, transform .25s;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: scale(.97); }
.btn-solid { background: var(--blu); color: var(--ink); }
.btn-solid:hover { background: color-mix(in srgb, var(--blu) 60%, white); }
.btn-line { border-color: color-mix(in srgb, var(--dusty) 60%, transparent); color: var(--bone); }
.btn-line:hover { border-color: var(--dusty); background: color-mix(in srgb, var(--dusty) 12%, transparent); }
.btn-light { background: var(--ink); color: var(--bone); }
.btn-light:hover { background: color-mix(in srgb, var(--ink) 80%, var(--blu)); }

/* Hero */
.hero {
  position: relative; min-height: 100svh;
  display: grid; grid-template-columns: repeat(12, 1fr);
  padding: 0 var(--gutter) clamp(28px, 5vh, 56px);
  overflow: hidden;
  isolation: isolate;
}
.stroke {
  position: absolute; inset: 0; width: 100%; height: 100%; z-index: -2;
}
.stroke-path {
  fill: none; stroke: var(--blu); stroke-width: 150; stroke-linecap: round;
  opacity: .85;
}
.hero-stage { position: absolute; inset: 0; z-index: -1; }
#jeans3d { width: 100%; height: 100%; display: block; touch-action: pan-y; cursor: grab; }
#jeans3d:active { cursor: grabbing; }
.fallback {
  display: none; position: absolute; right: 8%; top: 12%; height: 76%; width: auto;
}
.no-webgl .fallback { display: block; }
.no-webgl #jeans3d { display: none; }

.hero-copy {
  grid-column: 1 / span 6; align-self: end;
  display: grid; gap: 1.6rem;
  pointer-events: none;
}
.hero-copy a { pointer-events: auto; }
h1 {
  font: 400 clamp(3.1rem, 8.4vw, 8.75rem)/.9 var(--display);
  font-optical-sizing: auto;
  letter-spacing: -.035em;
}
h1 .line { display: block; overflow: hidden; padding-bottom: .06em; }
h1 .line > span { display: block; }
h1 em { font-style: italic; color: var(--dusty); }
.lede { max-width: 30rem; color: var(--bone-dim); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.turn {
  position: absolute; right: var(--gutter); bottom: clamp(28px, 5vh, 56px);
  display: flex; align-items: center; gap: 6px;
}
.turn-hint { color: var(--dusty); font-size: .875rem; margin-right: 10px; }
.turn button {
  font: 500 .875rem/1 var(--text); color: var(--bone);
  background: none; border: 1px solid color-mix(in srgb, var(--dusty) 40%, transparent);
  border-radius: 999px; padding: .6rem 1rem; cursor: pointer;
  transition: background-color .25s, color .25s;
}
.turn button[aria-pressed="true"] { background: var(--dusty); color: var(--ink); border-color: var(--dusty); }

@media (max-width: 900px) {
  .hero { padding-top: 60svh; }
  .hero-copy { grid-column: 1 / -1; }
  .hero-stage { bottom: 38%; }
  .turn { top: 84px; bottom: auto; right: var(--gutter); }
  .turn-hint { display: none; }
}

/* Galleria ad anello */
.works { position: relative; }
.works-pin {
  position: relative; height: 100svh; overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: auto 1fr auto;
  padding: 96px var(--gutter) clamp(28px, 5vh, 56px);
  background:
    radial-gradient(60% 55% at 50% 55%, color-mix(in srgb, var(--denim-deep) 80%, transparent), transparent 70%),
    var(--ink);
}
#ring3d { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.works-pin::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(to bottom, var(--ink) 16%, transparent 34%, transparent 70%, var(--ink) 92%);
}
.works-head, .works-list, .works-count { position: relative; z-index: 2; text-shadow: 0 2px 18px var(--ink); }
.works-head { grid-column: 1; display: grid; gap: .8rem; max-width: 26rem; }
h2 {
  font: 400 clamp(2.4rem, 5.2vw, 4.75rem)/.95 var(--display);
  letter-spacing: -.03em;
}
.works-head p { color: var(--bone-dim); }
.works-list {
  list-style: none; margin: 0; padding: 0;
  display: grid; max-width: 22rem;
}
.works-list li { grid-area: 1 / 1; opacity: 0; visibility: hidden; transition: opacity .4s, visibility .4s; }
.works-list li.on { opacity: 1; visibility: visible; }
.works-list h3 { font: italic 400 2rem/1.1 var(--display); margin-bottom: .35rem; }
.works-list p { color: var(--bone-dim); }
.works-count {
  margin: 0 .4rem; color: var(--dusty); font-size: .9375rem; font-variant-numeric: tabular-nums;
}
.works-count .now { font: 400 2.75rem/1 var(--display); color: var(--bone); margin-right: .25rem; }
.no-webgl .works-pin { height: auto; }
.no-webgl .works-list { gap: 1.5rem; }
.no-webgl .works-list li { grid-area: auto; }
.no-webgl .viewer-nav, .no-webgl .viewer-group { display: none; }
#ring3d { touch-action: pan-y; }

/* Cartelle: un'etichetta sotto ogni pila */
.folders {
  position: absolute; left: 0; right: 0; bottom: clamp(28px, 6vh, 64px); z-index: 2;
  display: grid; grid-template-columns: repeat(2, 1fr);
}
.folders button {
  justify-self: center; display: grid; gap: .3rem; text-align: center;
  background: none; border: 0; color: var(--bone); font: inherit; cursor: pointer; padding: .6rem 1.2rem;
}
.folders .f-name { font: italic 400 clamp(1.5rem, 2.6vw, 2.25rem)/1.1 var(--display); }
.folders .f-n { color: var(--dusty); font-size: .8125rem; letter-spacing: .1em; text-transform: uppercase; }
.folders button:hover .f-name, .folders button:focus-visible .f-name { text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 1px; }
.folders[hidden], .viewer[hidden] { display: none; }
.viewer {
  grid-column: 1 / -1; grid-row: 3; align-self: end; position: relative; z-index: 2;
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 1.5rem;
  animation: rise .6s cubic-bezier(.2, .7, .2, 1);
}
.viewer-group { color: var(--dusty); font-size: .8125rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: .6rem; }
.viewer-nav { display: flex; align-items: center; gap: 8px; }
.viewer-nav button {
  min-width: 44px; min-height: 44px; padding: 0 1rem;
  font: 500 .9375rem/1 var(--text); color: var(--bone);
  background: none; border: 1px solid color-mix(in srgb, var(--dusty) 40%, transparent);
  border-radius: 999px; cursor: pointer; transition: background-color .25s, color .25s, border-color .25s;
}
.viewer-nav button:hover { background: var(--dusty); color: var(--ink); border-color: var(--dusty); }
.viewer-nav .shut { margin-left: 8px; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } }
@media (max-width: 640px) {
  .works-pin { grid-template-columns: 1fr auto; }
  .works-head { grid-column: 1 / -1; }
}

/* Pezzo disponibile */
.piece {
  display: grid; grid-template-columns: repeat(12, 1fr); gap: 0 var(--gutter);
  padding: clamp(96px, 14vw, 180px) var(--gutter);
  align-items: center;
}
.piece-media { grid-column: 1 / span 7; margin: 0; position: relative; }
.piece-media img:first-child { width: 78%; border-radius: 4px; }
.piece-back {
  position: absolute; right: 0; bottom: -8%; width: 42%;
  border-radius: 4px; box-shadow: 0 30px 60px -20px #000;
}
.piece-info { grid-column: 8 / span 5; display: grid; gap: 1.5rem; justify-items: start; }
.piece-info > p { color: var(--bone-dim); max-width: var(--measure); }
dl { margin: 0; width: 100%; display: grid; }
dl div { display: grid; grid-template-columns: 9rem 1fr; gap: 1rem; padding: .9rem 0; border-top: 1px solid color-mix(in srgb, var(--dusty) 25%, transparent); }
dl div:last-child { border-bottom: 1px solid color-mix(in srgb, var(--dusty) 25%, transparent); }
dt { color: var(--dusty); }
dd { margin: 0; }
@media (max-width: 900px) {
  .piece-media, .piece-info { grid-column: 1 / -1; }
  .piece-info { margin-top: 18%; }
}

/* Su misura */
.custom {
  display: grid; grid-template-columns: repeat(12, 1fr); gap: 0 var(--gutter);
  padding: clamp(64px, 10vw, 140px) var(--gutter) clamp(96px, 14vw, 180px);
}
.custom-head { grid-column: 1 / span 5; display: grid; gap: 1.2rem; align-content: start; position: sticky; top: 120px; align-self: start; }
.custom-head p { color: var(--bone-dim); max-width: var(--measure); }
.steps-wrap { grid-column: 7 / span 6; position: relative; }
.steps-line { position: absolute; left: 21px; top: 22px; width: 4px; height: calc(100% - 44px); overflow: visible; }
.steps-line path { stroke: var(--blu-light); stroke-width: 4; fill: none; vector-effect: non-scaling-stroke; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: clamp(56px, 9vh, 96px); }
.steps li { display: grid; grid-template-columns: 44px 1fr; column-gap: 1.4rem; row-gap: .4rem; }
.steps .n {
  grid-row: span 2; width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center;
  font: 500 1.25rem/1 var(--display);
  background: var(--ink); border: 1px solid color-mix(in srgb, var(--dusty) 45%, transparent);
  position: relative; z-index: 1;
  transition: background-color .4s, border-color .4s;
}
.steps li.on .n { background: var(--blu); border-color: var(--blu-light); color: var(--ink); }
.steps h3 { font: 400 1.75rem/1.15 var(--display); letter-spacing: -.01em; }
.steps p { color: var(--bone-dim); max-width: 28rem; }
@media (max-width: 900px) {
  .custom-head, .steps-wrap { grid-column: 1 / -1; }
  .custom-head { position: static; margin-bottom: 56px; }
}

/* Prenotazione */
.book {
  background: var(--blu-deep); color: var(--ink);
  display: grid; grid-template-columns: repeat(12, 1fr); gap: 0 var(--gutter);
  padding: clamp(80px, 12vw, 160px) var(--gutter);
}
.book-head { grid-column: 1 / span 4; display: grid; gap: 1.2rem; align-content: start; }
.book-head h2 { font-size: clamp(3.5rem, 9vw, 8rem); }
.book-head p { color: color-mix(in srgb, var(--ink) 80%, var(--blu)); max-width: 24rem; }
.book :focus-visible { outline-color: var(--ink); }
.form { grid-column: 6 / span 7; display: grid; gap: 2rem; justify-items: start; }

.mode {
  position: relative; display: inline-grid; grid-template-columns: 1fr 1fr;
  border: 1px solid color-mix(in srgb, var(--ink) 30%, transparent);
  border-radius: 999px; padding: 4px; margin: 0;
}
.mode label { position: relative; z-index: 1; cursor: pointer; }
.mode input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.mode span { display: block; padding: .8rem 1.3rem; text-align: center; transition: color .35s; white-space: nowrap; }
.mode input:checked + span { color: var(--blu-deep); }
.mode input:focus-visible + span { outline: 2px solid var(--ink); outline-offset: 2px; border-radius: 999px; }
.mode-pill {
  position: absolute; top: 4px; bottom: 4px; left: 4px; width: calc(50% - 4px);
  background: var(--ink); border-radius: 999px;
  transition: transform .45s cubic-bezier(.7, 0, .2, 1);
}
.mode:has(input[value="custom"]:checked) .mode-pill { transform: translateX(100%); }

.grid { width: 100%; display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem 1.6rem; }
.field { display: grid; gap: .45rem; align-content: start; }
.field.wide { grid-column: 1 / -1; }
.field > span { font-size: .9375rem; color: color-mix(in srgb, var(--ink) 85%, var(--blu)); }
.field em { font-style: normal; opacity: .7; }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; color: var(--ink);
  background-color: color-mix(in srgb, white 55%, transparent);
  border: 1px solid color-mix(in srgb, var(--ink) 25%, transparent);
  border-radius: 10px; padding: .85rem 1rem;
  transition: border-color .2s, background-color .2s;
}
.field select {
  appearance: none; padding-right: 2.6rem;
  background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(135deg, var(--ink) 50%, transparent 50%);
  background-position: calc(100% - 22px) 55%, calc(100% - 17px) 55%;
  background-size: 5px 5px; background-repeat: no-repeat;
}
.field select option { background: var(--blu-deep); }
.field textarea { resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--ink); background-color: color-mix(in srgb, white 85%, transparent); }
.field [aria-invalid="true"] { border-color: #b3261e; }
.err { color: #9c1c16; font-size: .875rem; }
.field[hidden] { display: none; }

/* Taglie: pulsanti da scegliere al posto della tendina */
.sizes { border: 0; margin: 0; padding: 0; min-width: 0; }
.sizes legend { padding: 0; margin-bottom: .45rem; font-size: .9375rem; color: color-mix(in srgb, var(--ink) 85%, var(--blu)); }
.size-system {
  display: inline-flex; justify-self: start; width: max-content; gap: 2px; padding: 3px; margin-bottom: .7rem;
  border: 1px solid color-mix(in srgb, var(--ink) 25%, transparent); border-radius: 999px;
}
.size-system span { display: block; padding: .45rem .9rem; border-radius: 999px; font-size: .875rem; font-weight: 500; letter-spacing: .04em; transition: background-color .2s, color .2s; }
.size-system input:checked + span { background: var(--ink); color: var(--bone); }
.size-system input:focus-visible + span { outline: 2px solid var(--ink); outline-offset: 2px; }
.size-list { display: flex; flex-wrap: wrap; gap: 8px; }
.size-list label, .size-system label { position: relative; cursor: pointer; }
.size-list input, .size-system input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.size-list span {
  display: grid; place-items: center; min-width: 52px; min-height: 48px; padding: 0 .9rem;
  border: 1px solid color-mix(in srgb, var(--ink) 25%, transparent); border-radius: 999px;
  background: color-mix(in srgb, white 55%, transparent);
  font-variant-numeric: tabular-nums; transition: background-color .2s, color .2s, border-color .2s;
}
.size-list label:hover span { border-color: var(--ink); }
.size-list input:checked + span { background: var(--ink); color: var(--bone); border-color: var(--ink); }
.size-list input:focus-visible + span { outline: 2px solid var(--ink); outline-offset: 2px; }
.btn[disabled] { opacity: .6; cursor: progress; }
.done a { color: inherit; }
.done { min-height: 1.5em; color: var(--ink); max-width: 32rem; }

@media (max-width: 900px) {
  .book-head, .form { grid-column: 1 / -1; }
  .book-head { margin-bottom: 48px; }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .mode span { padding: .8rem .9rem; font-size: .9375rem; }
}

/* Footer */
.foot {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 1rem;
  padding: 40px var(--gutter);
  color: var(--bone-dim); font-size: .9375rem;
}
.foot a { margin-left: .8rem; }
.foot { border-top: 1px solid color-mix(in srgb, var(--dusty) 18%, transparent); }
.foot .wordmark { color: var(--bone); font-size: clamp(2.5rem, 7vw, 5rem); }
.foot a { text-underline-offset: 4px; transition: color .25s; }
.foot a:hover { color: var(--dusty); }

/* Bicromia: l'inchiostro resta nero, il denim prende il colore del fondo */
.duo { position: relative; margin: 0; overflow: hidden; background: var(--blu-light); }
.duo.blue { background: var(--dusty); }
.duo img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.5) brightness(1.3); mix-blend-mode: multiply; }
.duo img.c { position: absolute; inset: 0; filter: none; mix-blend-mode: normal; opacity: 0; transition: opacity .6s; }
.duo:hover img.c { opacity: 1; }

/* Profondità tonale dietro le immagini */
.piece { background: radial-gradient(50% 60% at 30% 50%, color-mix(in srgb, var(--denim-deep) 70%, transparent), transparent 70%); }
.custom { background: radial-gradient(45% 50% at 20% 40%, color-mix(in srgb, var(--blu) 22%, transparent), transparent 70%); }

/* Paio nero */
.noir { padding: clamp(40px, 6vw, 96px) var(--gutter) clamp(96px, 14vw, 200px); overflow: hidden; }
.noir-head {
  display: grid; grid-template-columns: repeat(12, 1fr); gap: 1.5rem var(--gutter);
  align-items: end; margin-bottom: clamp(48px, 7vw, 104px);
}
.noir-head h2 { grid-column: 1 / span 7; font-size: clamp(3rem, 8vw, 7.5rem); }
.noir-head h2 em { font-style: italic; color: var(--dusty); }
.noir-copy { grid-column: 8 / span 5; display: grid; gap: 1.6rem; justify-items: start; }
.noir-copy p { color: var(--bone-dim); max-width: var(--measure); }
.noir-copy .noir-note { color: var(--dusty); }
.mosaic { display: grid; grid-template-columns: 5fr 4fr 4fr; gap: clamp(12px, 1.6vw, 24px); align-items: start; }
.mosaic .col { display: grid; gap: clamp(12px, 1.6vw, 24px); }
.mosaic .col:nth-child(2) { margin-top: clamp(80px, 14vw, 220px); }
.mosaic .col:nth-child(3) { margin-top: clamp(40px, 6vw, 96px); }
.mosaic figure { position: relative; margin: 0; overflow: hidden; border-radius: 6px; aspect-ratio: 3 / 4; background: var(--denim-deep); }
.mosaic img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s cubic-bezier(.2, .7, .2, 1), filter .8s; filter: saturate(.85); }
.mosaic figure:hover img { transform: scale(1.06); filter: saturate(1); }
@media (max-width: 900px) {
  .noir-head h2, .noir-copy { grid-column: 1 / -1; }
  .mosaic { grid-template-columns: 1fr 1fr; }
  .mosaic .col { display: contents; }
}

/* Da vicino */
.close { padding: clamp(40px, 6vw, 80px) 0 clamp(96px, 12vw, 160px); overflow: hidden; }
.close-head {
  display: grid; grid-template-columns: repeat(12, 1fr); gap: 1rem var(--gutter);
  padding: 0 var(--gutter); margin-bottom: clamp(40px, 5vw, 64px); align-items: end;
}
.close-head h2 { grid-column: 1 / span 6; }
.close-head p { grid-column: 8 / span 5; color: var(--bone-dim); max-width: var(--measure); }
.strip { display: flex; gap: clamp(12px, 1.6vw, 24px); padding: 0 var(--gutter); width: max-content; }
.strip figure { width: clamp(220px, 23vw, 340px); aspect-ratio: 3 / 4; border-radius: 6px; transition: transform .6s cubic-bezier(.2, .7, .2, 1), box-shadow .6s; }
.strip figure:hover { transform: translateY(-8px); box-shadow: 0 30px 60px -24px #000; }
.strip figure::after, .mosaic figure::after { content: ""; position: absolute; inset: 55% 0 0; background: linear-gradient(transparent, rgba(6, 5, 6, .75)); pointer-events: none; }
.strip figcaption, .mosaic figcaption {
  position: absolute; left: 14px; bottom: 12px; z-index: 1;
  font: italic 400 1.125rem/1.2 var(--display); color: var(--bone);
  text-shadow: 0 1px 12px rgba(0, 0, 0, .6);
}
.strip figure:nth-child(even) { margin-top: clamp(24px, 4vw, 64px); }
@media (max-width: 900px) {
  .close-head h2, .close-head p { grid-column: 1 / -1; }
  .close { overflow: visible; }
  .strip { width: auto; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 12px; }
  .strip figure { flex: 0 0 68vw; scroll-snap-align: center; }
}

/* Su misura: riquadro che cambia a ogni passo */
.step-stage { position: relative; height: min(46vh, 28rem); aspect-ratio: 4 / 5; margin-top: 1.4rem; border-radius: 6px; overflow: hidden; }
.step-stage figure {
  position: absolute; inset: 0; margin: 0;
  clip-path: inset(100% 0 0 0);
  transition: clip-path 1s cubic-bezier(.7, 0, .2, 1);
}
.step-stage figure > img { width: 100%; height: 100%; object-fit: cover; }
.step-stage figure.on { clip-path: inset(0 0 0 0); z-index: 1; }
@media (max-width: 900px) { .step-stage { display: none; } }

/* Prenota: dettaglio che cambia col selettore */
.book-visual {
  position: relative; width: min(100%, 17rem); aspect-ratio: 3 / 4; margin-top: 1.5rem;
  animation: drift 9s ease-in-out infinite;
}
.book-visual figure { position: absolute; inset: 0; border-radius: 6px; transition: opacity .6s, transform .6s; }
.book-visual .v-custom { opacity: 0; transform: rotate(3deg) scale(.96); }
.book:has(input[value="custom"]:checked) .v-custom { opacity: 1; transform: none; }
.book:has(input[value="custom"]:checked) .v-pezzo { opacity: 0; transform: rotate(-3deg) scale(.96); }
@keyframes drift {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-10px) rotate(1deg); }
}
@media (max-width: 900px) { .book-visual { display: none; } }

/* Atmosfera: grana da pellicola e luce calda */
body::after {
  content: ""; position: fixed; inset: -50%; z-index: 40; pointer-events: none;
  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='.8' numOctaves='3' 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");
  opacity: .08; mix-blend-mode: overlay;
  animation: grain 1.2s steps(6) infinite;
}
@keyframes grain {
  0%, 100% { transform: translate(0, 0); }
  20% { transform: translate(-3%, 2%); }
  40% { transform: translate(2%, -4%); }
  60% { transform: translate(-4%, -1%); }
  80% { transform: translate(3%, 3%); }
}
.lamp {
  position: fixed; left: 0; top: 0; z-index: 15; pointer-events: none;
  width: 70vmax; height: 70vmax; margin: -35vmax 0 0 -35vmax; border-radius: 50%;
  background: radial-gradient(closest-side, rgba(206, 229, 255, .14), rgba(206, 229, 255, .06) 45%, transparent 75%);
  mix-blend-mode: screen;
  opacity: 0; transition: opacity 1.2s;
}
.lamp.on { opacity: 1; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  body::after, .book-visual { animation: none; }
}