/* ============================================================================
   SRH — Stili base (token, tipografia, topbar, componenti comuni)
   Deep-space / electric-cyan. Instrument Serif (display) + Space Grotesk (UI)
   + IBM Plex Mono (HUD telemetry).
   ============================================================================ */
:root {
  --bg:        #04060c;
  --bg-2:      #070b16;
  --night:     #0a1228;
  --accent:    #3df0e6;   /* electric cyan */
  --accent-2:  #256beb;   /* sesa blue */
  --accent-3:  #e64bd0;   /* neuromorphic magenta (rare) */
  --ink:       #eaf2ff;
  --ink-dim:   #9fb0cf;
  --ink-faint: #7385a9;
  --line:      rgba(120,160,220,0.14);
  --line-2:    rgba(120,160,220,0.28);

  --serif: "Instrument Serif", Georgia, serif;
  --sans:  "Space Grotesk", system-ui, sans-serif;
  --mono:  "IBM Plex Mono", ui-monospace, monospace;

  --maxw: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* ---- Deep-space backdrop (behind the canvas) --------------------------- */
.space {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(37,107,235,0.18), transparent 55%),
    radial-gradient(90% 70% at 80% 110%, rgba(61,240,230,0.10), transparent 60%),
    radial-gradient(70% 60% at 12% 90%, rgba(230,75,208,0.06), transparent 60%),
    linear-gradient(180deg, #05070f 0%, #04060c 45%, #060912 100%);
}
.space::after { /* subtle film grain */
  content: ""; position: absolute; inset: -50%;
  background-image: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0naHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmcnIHdpZHRoPScxMjAnIGhlaWdodD0nMTIwJz48ZmlsdGVyIGlkPSduJz48ZmVUdXJidWxlbmNlIHR5cGU9J2ZyYWN0YWxOb2lzZScgYmFzZUZyZXF1ZW5jeT0nMC45JyBudW1PY3RhdmVzPScyJy8+PC9maWx0ZXI+PHJlY3Qgd2lkdGg9JzEwMCUnIGhlaWdodD0nMTAwJScgZmlsdGVyPSd1cmwoI24pJyBvcGFjaXR5PScwLjUnLz48L3N2Zz4=");
  opacity: 0.035; mix-blend-mode: screen;
}
#field {
  position: fixed; inset: 0; z-index: 1; pointer-events: none;
}
.vignette {
  position: fixed; inset: 0; z-index: 2; pointer-events: none;
  box-shadow: inset 0 0 240px 40px rgba(2,4,9,0.9);
  background: radial-gradient(120% 120% at 50% 50%, transparent 58%, rgba(2,4,9,0.55) 100%);
}

/* ---- Content layer ----------------------------------------------------- */
.content { position: relative; z-index: 5; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 40px; }

/* ---- Topbar / HUD chrome ----------------------------------------------- */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 40px;
  backdrop-filter: blur(2px);
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand .sesa { height: 26px; width: auto; opacity: 0.95; }
.brand .div { width: 1px; height: 22px; background: var(--line-2); }
.brand .srh { font-family: var(--mono); font-size: 12px; letter-spacing: 0.28em;
  text-transform: uppercase; color: var(--ink-dim); }
.brand .srh b { color: var(--ink); font-weight: 600; }

.topnav { display: flex; align-items: center; gap: 30px; }
.topnav a { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--ink-faint); text-decoration: none;
  transition: color .25s ease; }
.topnav a:hover { color: var(--accent); }
.topnav .cta {
  color: var(--ink); border: 1px solid var(--line-2); border-radius: 999px;
  padding: 9px 18px; transition: all .25s ease;
}
.topnav .cta:hover { border-color: var(--accent); color: var(--accent);
  box-shadow: 0 0 24px -6px var(--accent); }
@media (max-width: 860px) { .topnav a:not(.cta) { display: none; } }

/* corner HUD telemetry */
.hud { position: fixed; z-index: 30; font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-faint);
  pointer-events: none; }
.hud .dot { display: inline-block; width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 10px var(--accent);
  vertical-align: middle; margin-right: 7px; animation: blink 2.4s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.25} }
.hud.bl { left: 40px; bottom: 26px; }
.hud.br { right: 40px; bottom: 26px; text-align: right; }
@media (max-width: 860px) { .hud { display: none; } }

/* scene progress rail (right) */
.rail { position: fixed; right: 34px; top: 50%; transform: translateY(-50%);
  z-index: 30; display: flex; flex-direction: column; gap: 14px; }
.rail button { all: unset; cursor: pointer; display: flex; align-items: center;
  gap: 10px; justify-content: flex-end; color: var(--ink-faint);
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.18em;
  text-transform: uppercase; transition: color .25s; }
.rail .tk { width: 22px; height: 1px; background: var(--line-2); transition: all .3s; }
.rail button:hover { color: var(--ink-dim); }
.rail button[aria-current="true"] { color: var(--accent); }
.rail button[aria-current="true"] .tk { width: 40px; background: var(--accent);
  box-shadow: 0 0 12px var(--accent); }
.rail .lbl { opacity: 0; transition: opacity .25s; }
.rail button:hover .lbl, .rail button[aria-current="true"] .lbl { opacity: 1; }
@media (max-width: 1100px) { .rail { display: none; } }

/* ---- Sections ---------------------------------------------------------- */
.scene { position: relative; min-height: 100vh; display: flex; align-items: center;
  padding: 130px 0 110px; }
.scene.tall { min-height: 124vh; }

/* eyebrow / kicker */
.kicker { font-family: var(--mono); font-size: 12px; letter-spacing: 0.32em;
  text-transform: uppercase; color: var(--accent); display: inline-flex;
  align-items: center; gap: 12px; margin: 0 0 26px; }
.kicker::before { content: ""; width: 30px; height: 1px; background: var(--accent);
  box-shadow: 0 0 10px var(--accent); }

/* display type */
h1.display { font-family: var(--serif); font-weight: 400;
  font-size: clamp(40px, 7.4vw, 104px); line-height: 0.98; letter-spacing: -0.01em;
  margin: 0; color: var(--ink); }
h2.display { font-family: var(--serif); font-weight: 400;
  font-size: clamp(34px, 5.2vw, 72px); line-height: 1.02; letter-spacing: -0.005em;
  margin: 0 0 26px; color: var(--ink); }
.display .em { font-style: italic; color: transparent;
  background: linear-gradient(100deg, var(--accent) 0%, #bafff8 50%, var(--accent-2) 100%);
  -webkit-background-clip: text; background-clip: text; }
.lead { font-size: clamp(16px, 1.5vw, 20px); color: var(--ink-dim); max-width: 56ch;
  line-height: 1.65; }
.lead strong { color: var(--ink); font-weight: 500; }

/* glassy panel */
.panel {
  background: linear-gradient(160deg, rgba(12,20,42,0.62), rgba(7,11,22,0.42));
  border: 1px solid var(--line);
  border-radius: 18px;
  backdrop-filter: blur(10px);
  box-shadow: 0 24px 80px -40px rgba(0,0,0,0.9), inset 0 1px 0 rgba(255,255,255,0.04);
}

/* ---- Hero -------------------------------------------------------------- */
.hero .wrap { display: grid; gap: 30px; }
.hero h1 { max-width: 16ch; }
.hero .lead { margin-top: 6px; }
.hero .meta { display: flex; gap: 40px; flex-wrap: wrap; margin-top: 16px; }
.hero .meta div { display: grid; gap: 4px; }
.hero .meta .n { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--ink-faint); }
.hero .meta .v { font-family: var(--serif); font-size: 26px; color: var(--ink); line-height: 1; }
.scrollcue { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--ink-faint); display: grid; justify-items: center; gap: 10px; }
.scrollcue .ln { width: 1px; height: 46px; background: linear-gradient(var(--accent), transparent);
  animation: drop 2s infinite; }
@keyframes drop { 0%{transform:scaleY(0);transform-origin:top} 50%{transform:scaleY(1);transform-origin:top}
  51%{transform:scaleY(1);transform-origin:bottom} 100%{transform:scaleY(0);transform-origin:bottom} }

/* ---- Manifesto (è / non è) --------------------------------------------- */
.manifesto .grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: start; }
@media (max-width: 900px){ .manifesto .grid { grid-template-columns: 1fr; } }
.isnot { display: grid; gap: 14px; }
.isnot .row { display: flex; gap: 14px; align-items: baseline; padding: 14px 18px;
  border: 1px solid var(--line); border-radius: 12px; transition: all .3s ease; }
.isnot .row .tag { font-family: var(--mono); font-size: 10px; letter-spacing: 0.18em;
  text-transform: uppercase; padding: 3px 8px; border-radius: 999px; white-space: nowrap; }
.isnot .no .tag { color: #ff96a8; background: rgba(232,22,66,0.12); }
.isnot .yes { border-color: rgba(61,240,230,0.35);
  background: linear-gradient(120deg, rgba(61,240,230,0.08), transparent); }
.isnot .yes .tag { color: var(--bg); background: var(--accent); }
.isnot .row p { margin: 0; color: var(--ink-dim); font-size: 15px; }
.isnot .yes p { color: var(--ink); }

/* ---- Orchestration columns -------------------------------------------- */
.orch .cols { display: grid; grid-template-columns: 1fr auto 1fr; gap: 34px; align-items: center; }
@media (max-width: 900px){ .orch .cols { grid-template-columns: 1fr; } .orch .mid { display:none; } }
.ocol h4 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 16px; }
.ocol.offer h4 { color: var(--accent-2); }
.ocol ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.ocol li { font-family: var(--serif); font-size: clamp(20px,2.2vw,28px); color: var(--ink-dim);
  line-height: 1.15; transition: color .3s, transform .3s; cursor: default; }
.ocol li:hover { color: var(--ink); transform: translateX(6px); }
.orch .mid { display: grid; justify-items: center; gap: 8px; text-align: center; }
.orch .mid .hubdot { width: 64px; height: 64px; border-radius: 50%;
  background: radial-gradient(circle, var(--accent), rgba(61,240,230,0.05) 70%);
  box-shadow: 0 0 50px -4px var(--accent); display: grid; place-items: center;
  font-family: var(--mono); font-weight: 700; color: var(--bg); font-size: 13px; letter-spacing: 0.05em;
  animation: hubpulse 3s ease-in-out infinite; }
@keyframes hubpulse { 0%,100%{ box-shadow:0 0 40px -6px var(--accent) } 50%{ box-shadow:0 0 70px 2px var(--accent) } }
.orch .mid .mt { font-family: var(--mono); font-size: 10px; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--ink-faint); }

/* ---- PMI value cards --------------------------------------------------- */
.cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-top: 14px; }
@media (max-width: 900px){ .cards { grid-template-columns: 1fr; } }
.card { padding: 28px 26px; border-radius: 16px; position: relative; overflow: hidden;
  background: linear-gradient(165deg, rgba(12,20,42,0.55), rgba(7,11,22,0.35));
  border: 1px solid var(--line); transition: transform .35s ease, border-color .35s ease, box-shadow .35s; }
.card:hover { transform: translateY(-6px); border-color: rgba(61,240,230,0.4);
  box-shadow: 0 30px 70px -42px rgba(61,240,230,0.6); }
.card .ix { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; color: var(--accent); }
.card h3 { font-family: var(--serif); font-weight: 400; font-size: 27px; margin: 14px 0 10px; line-height: 1.1; }
.card p { margin: 0; color: var(--ink-dim); font-size: 14.5px; }
.card .gl { position: absolute; inset: 0; opacity: 0; transition: opacity .35s;
  background: radial-gradient(60% 60% at 50% 0%, rgba(61,240,230,0.14), transparent 70%); }
.card:hover .gl { opacity: 1; }

/* ---- Levels ------------------------------------------------------------ */
.levels .stack { display: grid; gap: 0; margin-top: 10px; }
.lvl { display: grid; grid-template-columns: 120px 1fr auto; gap: 28px; align-items: center;
  padding: 26px 8px; border-top: 1px solid var(--line); transition: background .3s, padding-left .3s; }
.lvl:last-child { border-bottom: 1px solid var(--line); }
.lvl:hover { background: linear-gradient(90deg, rgba(61,240,230,0.06), transparent 60%); padding-left: 20px; }
.lvl .num { font-family: var(--serif); font-size: 52px; color: var(--ink-faint); line-height: 1;
  transition: color .3s; }
.lvl:hover .num { color: var(--accent); }
.lvl .ti { font-family: var(--serif); font-size: 30px; color: var(--ink); margin: 0 0 4px; }
.lvl .de { margin: 0; color: var(--ink-dim); font-size: 14.5px; max-width: 60ch; }
.lvl .pct { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; color: var(--ink-faint); }
@media (max-width: 720px){ .lvl { grid-template-columns: 64px 1fr; } .lvl .pct { display:none; } .lvl .num{font-size:34px;} }

/* ---- Ecosystem --------------------------------------------------------- */
.eco .ring { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 14px; }
.eco .chip { display: flex; align-items: center; gap: 12px; padding: 14px 20px; border-radius: 999px;
  border: 1px solid var(--line); background: rgba(10,18,40,0.4); transition: all .3s; }
.eco .chip:hover { border-color: var(--accent); transform: translateY(-3px); }
.eco .chip .d { width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 12px var(--accent); }
.eco .chip .nm { font-weight: 500; color: var(--ink); }
.eco .chip .role { font-family: var(--mono); font-size: 10px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-faint); }

/* ---- CTA --------------------------------------------------------------- */
.cta-scene { text-align: center; }
.cta-scene .wrap { display: grid; justify-items: center; gap: 30px; }
.cta-scene h2 { max-width: 18ch; }
.bigbtn { display: inline-flex; align-items: center; gap: 14px; font-family: var(--mono);
  font-size: 13px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--bg);
  background: var(--accent); border: none; border-radius: 999px; padding: 18px 34px; cursor: pointer;
  box-shadow: 0 0 50px -8px var(--accent); transition: transform .25s, box-shadow .25s; text-decoration: none; }
.bigbtn:hover { transform: translateY(-3px); box-shadow: 0 0 70px -4px var(--accent); }
.ghostbtn { display: inline-flex; align-items: center; gap: 12px; font-family: var(--mono);
  font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-dim);
  border: 1px solid var(--line-2); border-radius: 999px; padding: 16px 28px; cursor: pointer;
  background: transparent; transition: all .25s; text-decoration: none; }
.ghostbtn:hover { color: var(--ink); border-color: var(--ink-dim); }
.cta-scene .btns { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.note { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-faint); display: inline-flex; align-items: center; gap: 8px; }

/* ---- Footer ------------------------------------------------------------ */
.foot { position: relative; z-index: 5; border-top: 1px solid var(--line); padding: 40px 0 56px; }
.foot .wrap { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.foot .sesa { height: 24px; opacity: 0.8; }
.foot small { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-faint); }

/* ---- Reveal animations ------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(28px); filter: blur(6px);
  transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1), filter .9s; }
.reveal.in { opacity: 1; transform: none; filter: none; }
.reveal.d1 { transition-delay: .08s; } .reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; } .reveal.d4 { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; filter: none; transition: none; }
}
.parallax { will-change: transform; }

/* ---- Accessibilità: skip link + focus visibile ------------------------- */
.skip-link { position: absolute; left: 12px; top: -56px; z-index: 1000; background: var(--accent); color: var(--bg);
  padding: 10px 16px; border-radius: 8px; font: 600 13px var(--sans); text-decoration: none; transition: top .15s ease; }
.skip-link:focus { top: 12px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }