/* Font locali (licenza SIL Open Font License) — nessuna richiesta esterna */
@font-face {
  font-family: "Space Grotesk"; font-style: normal; font-weight: 300 700; font-display: swap;
  src: url("fonts/space-grotesk-latin.woff2") format("woff2");
  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: "Space Grotesk"; font-style: normal; font-weight: 300 700; font-display: swap;
  src: url("fonts/space-grotesk-latin-ext.woff2") format("woff2");
  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-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "JetBrains Mono"; font-style: normal; font-weight: 400 500; font-display: swap;
  src: url("fonts/jetbrains-mono-latin.woff2") format("woff2");
  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: "JetBrains Mono"; font-style: normal; font-weight: 400 500; font-display: swap;
  src: url("fonts/jetbrains-mono-latin-ext.woff2") format("woff2");
  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-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  --blue-900: #12384a;
  --blue-700: #1f6688;
  --blue-600: #2E86AB;
  --blue-500: #4FA6C9;
  --blue-400: #59AECE;
  --blue-100: #e3f2f8;
  --blue-50:  #f2f9fc;
  --ink: #0d1b24;
  --ink-soft: #4a5d69;
  --line: #dbe7ee;
  --bg: #ffffff;
  --radius: 18px;
  --max: 1180px;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Space Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.wrap { width: min(var(--max), 100% - 40px); margin-inline: auto; }

.eyebrow {
  font-family: var(--mono);
  font-size: .78rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--blue-600);
  display: inline-flex;
  align-items: center;
  gap: .6rem;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: currentColor;
}

h1, h2, h3 { font-weight: 600; letter-spacing: -.02em; line-height: 1.1; }
h2 { font-size: clamp(2rem, 4.2vw, 3.1rem); margin: 1rem 0 1.2rem; }
h3 { font-size: 1.3rem; }
.lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 60ch; }

.btn {
  display: inline-flex; align-items: center; gap: .6rem;
  padding: .9rem 1.5rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: .98rem;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--blue-600);
  color: #fff;
  box-shadow: 0 10px 30px -10px rgba(46,134,171,.6);
}
.btn-primary:hover { transform: translateY(-2px); background: var(--blue-700); box-shadow: 0 16px 36px -12px rgba(46,134,171,.7); }
.btn-ghost { border-color: var(--line); background: rgba(255,255,255,.7); backdrop-filter: blur(6px); }
.btn-ghost:hover { border-color: var(--blue-400); color: var(--blue-700); transform: translateY(-2px); }
.btn svg { width: 16px; height: 16px; }

/* ---------- Header ---------- */
header.site {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
  border-bottom: 1px solid transparent;
}
header.site.scrolled {
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-color: var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.brand { display: flex; align-items: center; gap: .55rem; font-weight: 600; font-size: 1.25rem; letter-spacing: -.01em; }
.brand .logo { width: 44px; height: 44px; flex: none; }
.nav-links { display: flex; gap: 2rem; align-items: center; font-size: .95rem; color: var(--ink-soft); }
.nav-links a:not(.btn) { position: relative; transition: color .2s; }
.nav-links a:not(.btn)::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 1px; width: 100%;
  background: var(--blue-500); transform: scaleX(0); transform-origin: left; transition: transform .3s ease;
}
.nav-links a:not(.btn):hover { color: var(--ink); }
.nav-links a:not(.btn):hover::after { transform: scaleX(1); }
.nav-links .btn { padding: .6rem 1.15rem; font-size: .9rem; }
.menu-toggle { display: none; background: none; border: 0; width: 44px; height: 44px; cursor: pointer; }
.menu-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px auto; border-radius: 2px; transition: transform .3s, opacity .3s; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
  background:
    radial-gradient(1000px 600px at 85% 20%, rgba(79,166,201,.16), transparent 60%),
    radial-gradient(800px 500px at 0% 100%, rgba(46,134,171,.10), transparent 60%),
    var(--bg);
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 30%, transparent 75%);
  opacity: .55;
  pointer-events: none;
}
#net { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 3rem;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.7rem, 6.4vw, 5.2rem);
  font-weight: 600;
  letter-spacing: -.035em;
  margin: 1.3rem 0 1.4rem;
}
.hero h1 .grad {
  background: linear-gradient(100deg, var(--blue-600) 0%, var(--blue-400) 55%, var(--blue-600) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  animation: shine 8s linear infinite;
}
@keyframes shine { to { background-position: 200% center; } }
.hero .lead { font-size: 1.22rem; }
.hero-actions { display: flex; gap: .9rem; flex-wrap: wrap; margin-top: 2.2rem; }
.hero-meta {
  display: flex; gap: 2rem; flex-wrap: wrap;
  margin-top: 3.2rem; padding-top: 1.6rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: .8rem; color: var(--ink-soft);
}
.hero-meta b { display: block; font-family: var(--sans); font-size: 1rem; color: var(--ink); font-weight: 500; margin-bottom: .15rem; }

/* Hero mark (logo geometry, animated) */
.mark-stage { position: relative; aspect-ratio: 1; width: 100%; max-width: 460px; justify-self: end; }
.mark-stage .ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 1px solid var(--line);
}
.mark-stage .ring.r2 { inset: 12%; border-style: dashed; border-color: rgba(79,166,201,.35); animation: spin 60s linear infinite; }
.mark-stage .ring.r3 { inset: 26%; border-color: rgba(46,134,171,.18); }
.mark-stage .orbit {
  position: absolute; inset: 0; animation: spin 18s linear infinite;
}
.mark-stage .orbit i {
  position: absolute; top: -5px; left: 50%; width: 10px; height: 10px; margin-left: -5px;
  border-radius: 50%; background: var(--blue-500);
  box-shadow: 0 0 0 6px rgba(79,166,201,.15), 0 0 24px rgba(79,166,201,.8);
}
.mark-stage .orbit.o2 { inset: 12%; animation-duration: 26s; animation-direction: reverse; }
.mark-stage .orbit.o2 i { width: 7px; height: 7px; margin-left: -3.5px; top: -3.5px; background: var(--blue-600); box-shadow: 0 0 16px rgba(46,134,171,.7); }
@keyframes spin { to { transform: rotate(360deg); } }
.mark-stage svg.mark { position: absolute; inset: 22%; width: 56%; height: 56%; overflow: visible; }
.mark .sun { filter: drop-shadow(0 12px 30px rgba(79,166,201,.55)); animation: breathe 5s ease-in-out infinite; transform-origin: 190px 80px; }
.mark .bar { animation: pulse 2.6s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.mark .bar.b2 { animation-delay: .25s; }
.mark .bar.b3 { animation-delay: .5s; }
@keyframes breathe { 50% { transform: scale(1.05); } }
@keyframes pulse { 0%,100% { transform: scaleY(1); } 50% { transform: scaleY(.72); } }

/* ---------- Sections ---------- */
section { position: relative; padding: 120px 0; }
/* Ancore: il contenuto si ferma sotto la barra fissa, come le altre sezioni */
#principi, #partecipa, #contatti { scroll-margin-top: 116px; }
.section-head { max-width: 760px; margin-bottom: 4rem; }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start; }
.about-grid .lead + .lead { margin-top: 1.2rem; }
.pillars { display: grid; gap: 1rem; }
.pillar {
  display: grid; grid-template-columns: 56px 1fr; gap: 1.2rem; align-items: start;
  padding: 1.5rem; border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff;
  transition: border-color .3s, transform .3s, box-shadow .3s;
}
.pillar:hover { border-color: var(--blue-400); transform: translateX(6px); box-shadow: 0 18px 40px -24px rgba(46,134,171,.45); }
.pillar .num { font-family: var(--mono); font-size: .8rem; color: var(--blue-600); padding-top: .25rem; }
.pillar h3 { font-size: 1.12rem; margin-bottom: .35rem; }
.pillar p { color: var(--ink-soft); font-size: .97rem; }

/* Work cards */
#lavoro { background: var(--blue-50); }
#lavoro::before {
  content: ""; position: absolute; inset: 0;
  background-image: radial-gradient(rgba(46,134,171,.18) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 30%, #000 70%, transparent);
  pointer-events: none;
}
.cards { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.card {
  position: relative; overflow: hidden;
  background: rgba(255,255,255,.9);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 2.2rem 2rem 2rem;
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s;
}
.card::after {
  content: ""; position: absolute; inset: auto -40% -60% auto; width: 260px; height: 260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(79,166,201,.22), transparent 70%);
  opacity: 0; transition: opacity .4s;
}
.card:hover { transform: translateY(-6px); border-color: rgba(79,166,201,.6); box-shadow: 0 30px 60px -30px rgba(18,56,74,.35); }
.card:hover::after { opacity: 1; }
.icon {
  width: 54px; height: 54px; border-radius: 14px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--blue-100), #fff);
  border: 1px solid var(--line);
  margin-bottom: 1.6rem;
  color: var(--blue-600);
}
.icon svg { width: 26px; height: 26px; }
.card h3 { margin-bottom: .7rem; }
.card p { color: var(--ink-soft); }
.card ul { list-style: none; margin-top: 1.4rem; display: grid; gap: .55rem; }
.card li {
  font-family: var(--mono); font-size: .8rem; color: var(--blue-900);
  display: flex; align-items: center; gap: .6rem;
}
.card li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--blue-500); flex: none; }

/* Pipeline */
.pipeline { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem; counter-reset: step; }
.pipeline::before {
  content: ""; position: absolute; top: 27px; left: 28px; right: 28px; height: 2px;
  background: linear-gradient(90deg, var(--blue-600), var(--blue-400), var(--blue-600));
  opacity: .25;
}
.pipeline .flow {
  position: absolute; top: 26px; left: 28px; height: 4px; width: 80px; border-radius: 4px;
  background: linear-gradient(90deg, transparent, var(--blue-500), transparent);
  animation: flow 4s ease-in-out infinite;
}
@keyframes flow { 0% { left: 28px; opacity: 0; } 10% { opacity: 1; } 90% { opacity: 1; } 100% { left: calc(100% - 108px); opacity: 0; } }
.step { position: relative; }
.step .dot {
  width: 56px; height: 56px; border-radius: 50%;
  display: grid; place-items: center;
  background: #fff; border: 1px solid var(--line);
  font-family: var(--mono); font-size: .85rem; color: var(--blue-600);
  margin-bottom: 1.6rem; position: relative; z-index: 1;
  box-shadow: 0 0 0 8px #fff;
  transition: background .3s, color .3s, border-color .3s;
}
.step:hover .dot { background: var(--blue-600); color: #fff; border-color: var(--blue-600); }
.step h3 { font-size: 1.15rem; margin-bottom: .5rem; }
.step p { color: var(--ink-soft); font-size: .97rem; }

/* Principles band */
.band {
  background: linear-gradient(135deg, var(--blue-900), #0f2c3b 60%, #163f55);
  color: #fff; border-radius: 32px;
  padding: clamp(2.5rem, 6vw, 5rem);
  position: relative; overflow: hidden;
}
.band::before {
  content: ""; position: absolute; right: -120px; top: -120px; width: 420px; height: 420px; border-radius: 50%;
  background: radial-gradient(circle, rgba(79,166,201,.55), transparent 65%);
}
.band::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.band > * { position: relative; z-index: 1; }
.band .eyebrow { color: var(--blue-400); }
.band h2 { max-width: 18ch; }
.band .lead { color: rgba(255,255,255,.72); }
.principles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; margin-top: 3.2rem; }
.principle {
  padding: 1.5rem; border-radius: 16px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  backdrop-filter: blur(4px);
  transition: background .3s, border-color .3s;
}
.principle:hover { background: rgba(255,255,255,.09); border-color: rgba(89,174,206,.6); }
.principle .k { font-family: var(--mono); font-size: .75rem; letter-spacing: .1em; color: var(--blue-400); text-transform: uppercase; }
.principle h3 { font-size: 1.1rem; margin: .6rem 0 .45rem; color: #fff; }
.principle p { font-size: .93rem; color: rgba(255,255,255,.65); }

/* Join / CTA */
.join-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; }
.join {
  border: 1px solid var(--line); border-radius: 24px; padding: 2.4rem;
  display: flex; flex-direction: column; gap: 1rem;
  background: #fff;
  transition: border-color .3s, box-shadow .3s;
}
.join:hover { border-color: var(--blue-400); box-shadow: 0 30px 60px -36px rgba(46,134,171,.5); }
.join p { color: var(--ink-soft); flex: 1; }
.join .btn { align-self: flex-start; margin-top: .6rem; }
.join.accent { background: linear-gradient(160deg, var(--blue-50), #fff 70%); }

.contact {
  margin-top: 4rem; text-align: center;
  padding: 4rem 1.5rem; border-radius: 28px;
  border: 1px dashed rgba(46,134,171,.4);
  background: radial-gradient(600px 240px at 50% 0%, rgba(79,166,201,.14), transparent 70%);
}
.contact h2 { margin-top: .8rem; }
.contact .lead { margin: 0 auto 2rem; }
.contact .mail {
  font-family: var(--mono); font-size: clamp(1rem, 2.4vw, 1.3rem); color: var(--blue-700);
  border-bottom: 1px solid currentColor; padding-bottom: 2px;
}
.contact .mail:hover { color: var(--blue-500); }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 2.6rem 0; }
.foot { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }
.foot .brand .logo { width: 36px; height: 36px; }
.foot small { font-family: var(--mono); font-size: .78rem; color: var(--ink-soft); }
.foot nav { display: flex; gap: 1.5rem; font-size: .9rem; color: var(--ink-soft); }
.foot nav a:hover { color: var(--blue-600); }

/* Reveal */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .1s; } .reveal.d2 { transition-delay: .2s; } .reveal.d3 { transition-delay: .3s; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid, .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .mark-stage { justify-self: center; max-width: 340px; order: -1; }
  .cards { grid-template-columns: 1fr; }
  .pipeline { grid-template-columns: 1fr 1fr; row-gap: 2.6rem; }
  .pipeline::before, .pipeline .flow { display: none; }
  .principles { grid-template-columns: 1fr 1fr; }
  .join-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .menu-toggle { display: block; }
  .nav-links {
    position: fixed; inset: 76px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: rgba(255,255,255,.97); backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    padding: .5rem 20px 1.4rem;
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: opacity .25s, transform .25s;
  }
  .nav-links a:not(.btn) { padding: .95rem 0; border-bottom: 1px solid var(--line); }
  .nav-links a:not(.btn)::after { display: none; }
  .nav-links .btn { margin-top: 1rem; justify-content: center; }
  header.site.open .nav-links { opacity: 1; transform: none; pointer-events: auto; }
  header.site.open { background: #fff; border-color: var(--line); }
  header.site.open .menu-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  header.site.open .menu-toggle span:nth-child(2) { opacity: 0; }
  header.site.open .menu-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  section { padding: 84px 0; scroll-margin-top: 32px; }
  #principi, #partecipa, #contatti { scroll-margin-top: 100px; }
  .section-head { margin-bottom: 2.6rem; }
  .pipeline, .principles { grid-template-columns: 1fr; }
  .hero { padding-top: 104px; }
  .hero-meta { gap: 1.2rem 2rem; }
  .mark-stage { max-width: 260px; }
  .join { padding: 1.8rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Selettore lingua ---------- */
.lang {
  display: inline-flex; padding: 3px; gap: 2px;
  border: 1px solid var(--line); border-radius: 999px;
  font-family: var(--mono); font-size: .75rem; letter-spacing: .06em;
}
.nav-links .lang a { padding: .3rem .65rem; border-radius: 999px; color: var(--ink-soft); transition: background .2s, color .2s; }
.nav-links .lang a::after { display: none; }
.nav-links .lang a:hover { color: var(--blue-700); }
.nav-links .lang a[aria-current="page"] { background: var(--blue-100); color: var(--blue-700); }
@media (max-width: 760px) {
  .lang { align-self: flex-start; margin-top: 1rem; }
  .nav-links .lang a { padding: .45rem .9rem; border-bottom: 0; }
}