/* STW — sistema visivo
   Layout: griglia editoriale a 12 colonne, nero come capo, grigio "tavola" come i mockup ufficiali.
   Tema unico scuro per scelta: il logo ufficiale è bianco e i capi sono neri. */
:root {
  --ink: #0b0b0a;        /* fondo: nero del capo */
  --ink-2: #141312;      /* superfici */
  --line: #2b2927;       /* filetti su nero */
  --bone: #ebe6e0;       /* testo: crema della stampa */
  --mute: #8e8882;       /* testo secondario */
  --paper: #cbc6c2;      /* tavola grigia dei mockup */
  --paper-ink: #141210;  /* testo sulla tavola */
  --paper-line: #a8a29d;
  --f-display: "Archivo", "Arial Narrow", Arial, sans-serif;
  --f-body: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --f-mono: "Martian Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  --gutter: clamp(16px, 4vw, 56px);
  --max: 1360px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--bone);
  font-family: var(--f-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  font-variation-settings: "wdth" 100;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--bone); outline-offset: 3px; }
.on-paper :focus-visible { outline-color: var(--paper-ink); }

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

/* ---------- tipografia ---------- */
.label {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 400;
  line-height: 1.5;
}
.label.mute, .mute { color: var(--mute); }
.display {
  font-family: var(--f-display);
  font-variation-settings: "wdth" 125;
  font-weight: 850;
  text-transform: uppercase;
  line-height: 0.84;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}
.h2 {
  font-family: var(--f-display);
  font-variation-settings: "wdth" 118;
  font-weight: 800;
  text-transform: uppercase;
  font-size: clamp(2rem, 5.4vw, 4.4rem);
  line-height: 0.92;
  letter-spacing: -0.015em;
  margin: 0;
  text-wrap: balance;
}
.h3 {
  font-family: var(--f-display);
  font-variation-settings: "wdth" 112;
  font-weight: 750;
  text-transform: uppercase;
  font-size: clamp(1.25rem, 2.2vw, 1.6rem);
  line-height: 1.05;
  margin: 0;
}
.lede { font-size: clamp(1.15rem, 1.8vw, 1.4rem); line-height: 1.5; max-width: 36ch; margin: 0; }
.prose { max-width: 62ch; }
.prose p { margin: 0 0 1.1em; }
.prose p:last-child { margin-bottom: 0; }

/* segno globo: cerchio con assi, richiama la croce di STW / 001 */
.mark { width: 1.1em; height: 1.1em; flex: none; }
.mark circle, .mark line { fill: none; stroke: currentColor; stroke-width: 1.4; }
.eyebrow { display: flex; align-items: center; gap: 0.7em; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  background: color-mix(in srgb, var(--ink) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 14px; text-decoration: none; }
.brand img { height: 26px; width: auto; }
.brand .label { display: none; }
.nav { display: flex; gap: clamp(14px, 3vw, 36px); }
.nav a { text-decoration: none; color: var(--mute); transition: color .2s; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--bone); }
@media (min-width: 720px) { .brand .label { display: inline; } }

/* ---------- hero ---------- */
.hero { padding-block: clamp(48px, 9vw, 120px) clamp(40px, 7vw, 96px); border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: 1fr; gap: clamp(36px, 6vw, 72px); align-items: center; }
.hero .display { font-size: clamp(3.4rem, 12.5vw, 9.6rem); }
.hero .display span { display: block; }
.hero-logo { justify-self: start; width: min(100%, 520px); }
.hero-foot { display: grid; gap: 28px; margin-top: clamp(36px, 5vw, 56px); }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px 28px; }
@media (min-width: 960px) {
  .hero-grid { grid-template-columns: 7fr 5fr; }
  .hero-logo { justify-self: end; }
  .hero-foot { grid-template-columns: 7fr 5fr; align-items: end; }
  .hero-meta { justify-content: flex-end; }
}

.btn {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase;
  text-decoration: none; color: var(--ink); background: var(--bone);
  padding: 15px 22px; border: 1px solid var(--bone); cursor: pointer;
  transition: background .2s, color .2s;
}
.btn:hover { background: transparent; color: var(--bone); }
.btn.ghost { background: transparent; color: var(--bone); }
.btn.ghost:hover { background: var(--bone); color: var(--ink); }
.btn .arrow { transition: transform .25s; }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- sezioni ---------- */
.section { padding-block: clamp(64px, 10vw, 136px); }
.section + .section { border-top: 1px solid var(--line); }
.section-head { display: grid; gap: 18px; margin-bottom: clamp(36px, 5vw, 64px); }
@media (min-width: 960px) {
  .section-head { grid-template-columns: 5fr 7fr; align-items: end; }
  .section-head .lede { justify-self: end; }
}

.on-paper { background: var(--paper); color: var(--paper-ink); }
.on-paper .mute, .on-paper .label.mute { color: #5d5853; }
.section.on-paper + .section { border-top: 0; }

/* ---------- collezione ---------- */
.series { display: grid; grid-template-columns: 1fr; gap: clamp(40px, 4vw, 28px); list-style: none; margin: 0; padding: 0; }
@media (min-width: 720px) { .series { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.piece { display: grid; gap: 16px; text-decoration: none; color: inherit; }
.piece-media { position: relative; aspect-ratio: 550 / 750; overflow: hidden; background: var(--paper); max-width: 100%; }
.piece-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; transition: opacity .45s ease, transform .6s ease; }
.piece-media .front { opacity: 0; }
.piece:hover .piece-media .front, .piece:focus-visible .piece-media .front { opacity: 1; }
.piece:hover .piece-media .back, .piece:focus-visible .piece-media .back { opacity: 0; }
.piece-media .tag {
  position: absolute; left: 12px; bottom: 12px; z-index: 1;
  background: var(--paper-ink); color: var(--paper); padding: 6px 9px;
}
.piece-media .tag .t-front { display: none; }
.piece:hover .tag .t-front, .piece:focus-visible .tag .t-front { display: inline; }
.piece:hover .tag .t-back, .piece:focus-visible .tag .t-back { display: none; }
.piece-info { display: grid; gap: 6px; border-top: 1px solid var(--paper-line); padding-top: 14px; }
.piece-row { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.piece .go { font-family: var(--f-mono); font-size: .7rem; letter-spacing: .16em; text-transform: uppercase; }
.piece:hover .h3 { text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 2px; }

/* ---------- prospettiva ---------- */
.flip-block { display: grid; gap: clamp(28px, 4vw, 44px); }
.flip-text { font-size: clamp(2.6rem, 9vw, 7.6rem); }
.flip-word { display: inline-block; transition: transform .9s cubic-bezier(.65,0,.25,1); transform: rotate(180deg); }
.flip-block.is-flipped .flip-word { transform: rotate(0deg); }
.flip-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; }

/* ---------- metodo ---------- */
.method { display: grid; gap: 0; grid-template-columns: 1fr; list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.method li { display: grid; gap: 14px; padding-block: 28px; border-bottom: 1px solid var(--line); }
@media (min-width: 900px) {
  .method { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .method li { padding: 32px 32px 36px 0; border-bottom: 0; }
  .method li + li { border-left: 1px solid var(--line); padding-left: 32px; }
}
.method p { margin: 0; color: var(--mute); max-width: 40ch; }

/* ---------- stato ---------- */
.status { display: grid; gap: 28px; }
@media (min-width: 960px) { .status { grid-template-columns: 5fr 7fr; align-items: start; } }
.status-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.status-list li { display: flex; justify-content: space-between; gap: 16px; padding-block: 14px; border-bottom: 1px solid var(--line); }
.status-list li span:last-child { color: var(--mute); text-align: right; }

/* ---------- scheda prodotto ---------- */
.crumbs { display: flex; flex-wrap: wrap; gap: 10px; padding-block: 22px; color: var(--mute); }
.crumbs a { text-decoration: none; }
.crumbs a:hover { color: var(--bone); }
.product { display: grid; gap: clamp(32px, 5vw, 72px); padding-bottom: clamp(64px, 9vw, 120px); }
@media (min-width: 960px) { .product { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-items: start; } }
.gallery { display: grid; gap: 12px; }
.stage { background: var(--paper); }
.stage img { width: 100%; }
.thumbs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.thumb {
  display: grid; gap: 8px; padding: 0; border: 0; background: none; color: var(--mute);
  cursor: pointer; text-align: left;
}
.thumb .tbox { aspect-ratio: 4 / 5; background: var(--paper); overflow: hidden; outline: 1px solid transparent; outline-offset: 0; transition: outline-color .2s; }
.thumb .tbox img { width: 100%; height: 100%; object-fit: contain; }
.thumb[aria-pressed="true"] { color: var(--bone); }
.thumb[aria-pressed="true"] .tbox { outline: 1px solid var(--bone); outline-offset: 3px; }
.thumb:hover { color: var(--bone); }

.p-info { display: grid; gap: 28px; }
@media (min-width: 960px) { .p-info { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 96px); } }
.p-info .display { font-size: clamp(2.6rem, 6.4vw, 4.8rem); }
.spec { margin: 0; border-top: 1px solid var(--line); }
.spec > div { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: 16px; padding-block: 12px; border-bottom: 1px solid var(--line); }
.spec dt { color: var(--mute); }
.spec dd { margin: 0; }
.pending { color: var(--mute); }
.notice { border: 1px solid var(--line); padding: 18px 20px; display: grid; gap: 6px; }

.pager { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
.pager a { display: grid; gap: 6px; padding-block: 28px; text-decoration: none; }
.pager a + a { text-align: right; border-left: 1px solid var(--line); padding-left: 16px; }
.pager a:hover .h3 { text-decoration: underline; text-underline-offset: 5px; }

/* ---------- testo lungo (manifesto, privacy) ---------- */
.page-head { padding-block: clamp(56px, 9vw, 120px) clamp(36px, 5vw, 64px); border-bottom: 1px solid var(--line); }
.page-head .display { font-size: clamp(3rem, 10vw, 8rem); margin-top: 20px; }
.chapters { display: grid; gap: 0; }
.chapter { display: grid; gap: 18px; padding-block: clamp(40px, 6vw, 72px); border-bottom: 1px solid var(--line); }
@media (min-width: 900px) { .chapter { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 48px; } }
.chapter .prose p, .chapter .prose li { color: #cfc9c2; }
.chapter .prose ul { margin: 0 0 1.1em; padding-left: 1.1em; }
.chapter .prose li { margin-bottom: .4em; }
.fill { background: var(--bone); color: var(--ink); padding: 0 .3em; font-family: var(--f-mono); font-size: .82em; }
.draft-banner { border: 1px dashed var(--mute); padding: 16px 18px; color: var(--bone); max-width: 62ch; margin-top: 28px; }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding-block: 56px 40px; }
.foot-grid { display: grid; gap: 32px; }
@media (min-width: 900px) { .foot-grid { grid-template-columns: 5fr 4fr 3fr; align-items: start; } }
.foot-grid img { height: 40px; width: auto; }
.foot-links { display: grid; gap: 8px; }
.foot-links a { text-decoration: none; color: var(--mute); }
.foot-links a:hover { color: var(--bone); }
.foot-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--line); }

/* ---------- movimento ---------- */
@keyframes rise { from { transform: translateY(18px); opacity: .35; } to { transform: none; opacity: 1; } }
.reveal { animation: rise .9s cubic-bezier(.2,.7,.2,1) both; }
.reveal.d1 { animation-delay: .08s; } .reveal.d2 { animation-delay: .18s; } .reveal.d3 { animation-delay: .3s; } .reveal.d4 { animation-delay: .45s; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}