/* ————————————————————————————————————————————————
   Studio Atomoprogetti — home preview
   Inchiostro navy · carta calda · terracotta
———————————————————————————————————————————————— */
:root {
  --ink: #0d1320;
  --ink-2: #131b2c;
  --paper: #f4efe6;
  --bone: #ece6d9;
  --terra: #c2502f;
  --terra-l: #e07a54;
  --line: rgba(236, 230, 217, 0.16);
  --line-dark: rgba(13, 19, 32, 0.16);
  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, sans-serif;
  --pad: clamp(1.25rem, 4vw, 4rem);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--ink);
  color: var(--bone);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { display: block; width: 100%; height: 100%; object-fit: cover; }

a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 2px solid var(--terra-l); outline-offset: 3px; }

.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--terra); color: #fff; padding: .6rem 1rem; z-index: 100;
}
.skip:focus { left: 0; }

/* ——— header ——— */
.top {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.1rem var(--pad);
  mix-blend-mode: difference; color: #fff;
}
.wordmark { font-family: var(--serif); font-weight: 500; font-size: 1.15rem; letter-spacing: .01em; }
.wordmark em { font-style: italic; font-weight: 300; }
.nav { display: flex; gap: 1.6rem; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; }
.nav a { position: relative; padding: .2rem 0; }
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 1px; width: 0;
  background: currentColor; transition: width .35s ease;
}
.nav a:hover::after { width: 100%; }

/* ——— hero ——— */
.hero { position: relative; height: 100svh; min-height: 34rem; overflow: hidden; }
.hero-media { position: absolute; inset: 0; }
.hero-media img { transform: scale(1.06); animation: settle 2.4s cubic-bezier(.22,.8,.3,1) forwards; }
@keyframes settle { to { transform: scale(1); } }
.hero-veil {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(13,19,32,.30) 0%, rgba(13,19,32,.08) 30%, rgba(13,19,32,.42) 62%, rgba(13,19,32,.82) 88%, rgba(13,19,32,.94) 100%);
}
.hero-text {
  position: absolute; left: var(--pad); right: var(--pad); bottom: clamp(4.5rem, 11vh, 8rem);
  text-shadow: 0 1px 22px rgba(13,19,32,.55), 0 1px 4px rgba(13,19,32,.45);
}
.kicker {
  font-size: .8rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--terra-l); margin-bottom: 1rem; font-weight: 500;
}
.display {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(3.4rem, 11.5vw, 10.5rem);
  line-height: .92; letter-spacing: -.015em; color: #fff;
}
.display em { font-style: italic; font-weight: 300; }
.sub {
  margin-top: 1.4rem; max-width: 34rem;
  font-size: clamp(1rem, 1.6vw, 1.25rem); line-height: 1.5; color: rgba(236,230,217,.92);
}
.hero-caption {
  position: absolute; right: var(--pad); bottom: 1.2rem;
  font-size: .72rem; letter-spacing: .12em; text-transform: uppercase;
  color: rgba(236,230,217,.55);
}

/* ——— capitoli ——— */
.chapter { padding: clamp(4rem, 10vw, 8rem) var(--pad); }
.chapter--paper { background: var(--paper); color: var(--ink); }

.chapter-head {
  display: flex; align-items: baseline; gap: 1.4rem;
  border-top: 1px solid var(--line); padding-top: 1.2rem; margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
}
.chapter--paper .chapter-head { border-top-color: var(--line-dark); }
.num { font-family: var(--serif); font-style: italic; font-weight: 300; font-size: 1rem; color: var(--terra-l); }
.chapter--paper .num { color: var(--terra); }
.chapter-head h2 {
  font-family: var(--serif); font-weight: 500; font-size: clamp(2rem, 4.5vw, 3.4rem); letter-spacing: -.01em;
}
.chapter-note { margin-left: auto; font-size: .9rem; opacity: .62; max-width: 16rem; text-align: right; }

/* ——— opere ——— */
.opera {
  display: grid; grid-template-columns: 7fr 5fr; gap: clamp(1.5rem, 4vw, 4rem);
  align-items: end; margin-bottom: clamp(3rem, 7vw, 5.5rem);
}
.opera--alt { grid-template-columns: 5fr 7fr; }
.opera--alt .opera-media { order: 2; }
.opera--alt .opera-info { order: 1; }
.opera-media { aspect-ratio: 4/3; overflow: hidden; background: var(--ink-2); }
.opera-media img { transition: transform .8s cubic-bezier(.22,.8,.3,1); }
.opera:hover .opera-media img { transform: scale(1.025); }
.opera-info h3 {
  font-family: var(--serif); font-weight: 500; font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 1.2rem; letter-spacing: -.01em;
}
.opera-info dl { border-top: 1px solid var(--line); }
.opera-info dl > div {
  display: flex; justify-content: space-between; gap: 1rem;
  padding: .55rem 0; border-bottom: 1px solid var(--line); font-size: .92rem;
}
.opera-info dt { opacity: .55; }
.opera-info dd { font-weight: 500; }

.wide { margin: clamp(1rem, 3vw, 2rem) 0 0; }
.wide img { aspect-ratio: 21/9; }
.wide figcaption, .duo figcaption {
  margin-top: .7rem; font-size: .78rem; letter-spacing: .1em;
  text-transform: uppercase; opacity: .5;
}

/* ——— cantiere ——— */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1rem, 3vw, 2.5rem); }
.duo figure { aspect-ratio: 4/3; overflow: hidden; background: #ddd5c4; }
.duo img { transition: transform .8s cubic-bezier(.22,.8,.3,1); }
.duo figure:hover img { transform: scale(1.025); }
.statement {
  font-family: var(--serif); font-weight: 300; font-style: italic;
  font-size: clamp(1.7rem, 4vw, 3rem); line-height: 1.25; letter-spacing: -.01em;
  text-align: center; margin: clamp(3rem, 7vw, 5rem) auto;
  max-width: 22ch; color: var(--ink);
}
.chapter--paper .wide img { aspect-ratio: 21/8; }

/* ——— studio ——— */
.studio-grid {
  display: grid; grid-template-columns: 5fr 7fr; gap: clamp(1.5rem, 4vw, 4rem); align-items: center;
}
.studio-media { aspect-ratio: 4/3; overflow: hidden; background: var(--ink-2); }
.studio-text p { font-size: clamp(1.05rem, 1.8vw, 1.35rem); line-height: 1.65; max-width: 34rem; }
.studio-text p + p { margin-top: 1.2rem; opacity: .78; }
.studio-text strong { color: #fff; font-weight: 600; }

/* ——— contatti ——— */
.contatti {
  border-top: 1px solid var(--line);
  padding: clamp(4rem, 10vw, 7rem) var(--pad) 2.5rem;
  text-align: center;
}
.contatti-title {
  font-family: var(--serif); font-weight: 500; font-style: italic;
  font-size: clamp(2.6rem, 7vw, 5.5rem); letter-spacing: -.015em; margin-bottom: 2.2rem;
}
.contatti-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem 3rem; }
.contatti-links a {
  font-size: clamp(1.05rem, 2.2vw, 1.5rem); font-weight: 500; color: var(--bone);
  border-bottom: 1px solid var(--terra); padding-bottom: .2rem;
  transition: color .25s ease, border-color .25s ease;
}
.contatti-links a:hover { color: var(--terra-l); border-color: var(--terra-l); }
.legal { margin-top: 4rem; font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; opacity: .45; }

/* ——— reveal on scroll ——— */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s ease, transform .9s cubic-bezier(.22,.8,.3,1); }
.reveal.in { opacity: 1; transform: none; }

/* ——— responsive ——— */
@media (max-width: 52rem) {
  .nav { gap: 1rem; font-size: .72rem; }
  .opera, .opera--alt { grid-template-columns: 1fr; }
  .opera--alt .opera-media { order: 0; }
  .opera--alt .opera-info { order: 1; }
  .chapter-note { display: none; }
  .duo { grid-template-columns: 1fr; }
  .studio-grid { grid-template-columns: 1fr; }
  .wide img, .chapter--paper .wide img { aspect-ratio: 16/9; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-media img { animation: none; transform: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}