/* Sito pubblico di Learning (learning.codelevel39.it). Nessuna libreria: solo CSS e site.js.
   Animazioni solo su transform e opacity; con prefers-reduced-motion si vede subito lo stato finale. */

@font-face {
  font-family: "Fraunces";
  src: url("/assets/fonts/fraunces-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/assets/fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 800;
  font-display: swap;
}

:root {
  --bg: #0a101d;
  --bg-2: #0f1728;
  --card: #121c31;
  --card-2: #172340;
  --line: rgba(173, 196, 235, 0.12);
  --line-strong: rgba(173, 196, 235, 0.22);
  --text: #eaf0f8;
  --muted: #a3b0c6;
  --accent: #43e3b2;
  --accent-ink: #062a20;
  --accent-soft: rgba(67, 227, 178, 0.14);
  --blue: #7fa8ff;
  --blue-soft: rgba(127, 168, 255, 0.14);
  --warn: #ffbe5c;
  --bad: #ff7a7a;
  --bad-soft: rgba(255, 122, 122, 0.14);
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.6);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --wrap: 1180px;
  --gutter: 16px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.skip {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--accent); color: var(--accent-ink); padding: 10px 14px; border-radius: 8px;
  font-weight: 600; text-decoration: none;
}
.skip:focus { top: 12px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
@media (min-width: 720px) { :root { --gutter: 32px; } }

.mono { font-family: var(--font-mono); }

/* ---------- Testata ---------- */
.top {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 16, 29, 0.72);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}
.top.is-scrolled { border-bottom-color: var(--line); }
.top .wrap { display: flex; align-items: center; gap: 24px; height: 68px; }

.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 650; letter-spacing: -0.01em; }
.brand svg { width: 30px; height: 30px; }
.brand small { display: block; font-size: 0.7rem; font-weight: 500; color: var(--muted); letter-spacing: 0.04em; line-height: 1; }
.brand span { line-height: 1.1; }

.nav { display: none; gap: 26px; margin-left: auto; }
.nav a { color: var(--muted); text-decoration: none; font-size: 0.93rem; transition: color 0.2s; }
.nav a:hover { color: var(--text); }
@media (min-width: 900px) { .nav { display: flex; } }

.top-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }
@media (min-width: 900px) { .top-actions { margin-left: 8px; } }

.lang {
  display: inline-flex; align-items: center; justify-content: center; min-width: 44px; min-height: 44px;
  color: var(--muted); text-decoration: none; font-size: 0.85rem; font-weight: 600; letter-spacing: 0.06em;
  border-radius: 10px;
}
.lang:hover { color: var(--text); }

/* ---------- Pulsanti ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 20px; border-radius: 999px;
  font: 600 0.95rem/1 var(--font-body); text-decoration: none; cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.2s var(--ease), background-color 0.2s, border-color 0.2s, color 0.2s, box-shadow 0.3s;
}
.btn svg { width: 18px; height: 18px; transition: transform 0.25s var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--accent); color: var(--accent-ink); box-shadow: 0 8px 20px -10px rgba(0, 0, 0, 0.6); }
.btn-primary:hover { background: #64ecc2; }
.btn-ghost { color: var(--text); border-color: var(--line-strong); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: 0.88rem; }
.top .btn-sm { display: none; }
@media (min-width: 520px) { .top .btn-sm { display: inline-flex; } }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 56px 0 72px; overflow: hidden; isolation: isolate; }
@media (min-width: 960px) { .hero { padding: 96px 0 112px; } }

.hero-glow {
  position: absolute; inset: -20% -10% auto; height: 760px; z-index: -1; pointer-events: none;
  background:
    radial-gradient(40% 50% at 75% 30%, rgba(67, 227, 178, 0.16), transparent 70%),
    radial-gradient(35% 45% at 20% 10%, rgba(127, 168, 255, 0.14), transparent 70%);
}
.hero-grid-bg {
  position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: 0.5;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(70% 60% at 50% 30%, #000 30%, transparent 75%);
  mask-image: radial-gradient(70% 60% at 50% 30%, #000 30%, transparent 75%);
}

.hero .wrap { display: grid; gap: 48px; align-items: center; }
@media (min-width: 960px) { .hero .wrap { grid-template-columns: 1.05fr 0.95fr; gap: 56px; } }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap;
  font: 500 0.78rem/1.4 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent);
}
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); animation: pulse 2.4s ease-in-out infinite; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 560; letter-spacing: -0.02em; line-height: 1.08; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(2.5rem, 7vw, 4.6rem); margin: 18px 0 20px; font-variation-settings: "opsz" 144; }
h1 em, h2 em { font-style: italic; color: var(--accent); font-weight: 480; }
h2 { font-size: clamp(2rem, 4.6vw, 3.1rem); }
h3 { font-size: 1.35rem; font-weight: 600; letter-spacing: -0.01em; }

.lead { font-size: clamp(1.06rem, 2.2vw, 1.22rem); color: var(--muted); max-width: 36em; margin: 0 0 30px; text-wrap: pretty; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }

.hero-points { display: flex; flex-wrap: wrap; gap: 8px 22px; margin: 34px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 0.9rem; }
.hero-points li { display: flex; align-items: center; gap: 8px; }
.hero-points svg { width: 16px; height: 16px; color: var(--accent); flex: none; }

/* Pannello animato del hero: statement che entrano nella catena */
.ledger {
  position: relative; background: linear-gradient(180deg, var(--card), var(--bg-2));
  border: 1px solid var(--line); border-radius: 22px; box-shadow: var(--shadow);
  padding: 18px; min-width: 0;
}
.ledger-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 4px 4px 14px; border-bottom: 1px solid var(--line); }
.ledger-title { font: 500 0.78rem/1.3 var(--font-mono); color: var(--muted); letter-spacing: 0.04em; }
.ledger-live { display: inline-flex; align-items: center; gap: 7px; font: 600 0.72rem/1 var(--font-mono); color: var(--accent); letter-spacing: 0.1em; }
.ledger-live::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); animation: pulse 1.6s ease-in-out infinite; }

.feed { position: relative; height: 312px; overflow: hidden; margin-top: 14px;
  -webkit-mask-image: linear-gradient(180deg, #000 72%, transparent);
  mask-image: linear-gradient(180deg, #000 72%, transparent); }
.feed-item {
  position: absolute; left: 0; right: 0; top: 0;
  display: grid; grid-template-columns: auto 1fr auto; gap: 4px 12px; align-items: center;
  padding: 12px 14px; border-radius: 12px; background: rgba(255, 255, 255, 0.025); border: 1px solid var(--line);
  transition: transform 0.7s var(--ease), opacity 0.7s var(--ease);
  will-change: transform, opacity;
}
.feed-item::after {
  content: ""; position: absolute; left: 27px; top: 100%; width: 2px; height: 12px;
  background: linear-gradient(var(--accent), transparent); opacity: 0.6;
}
.feed-item.is-new { opacity: 0; transform: translateY(-24px) scale(0.98); }
.feed-seq { font: 600 0.72rem/1 var(--font-mono); color: var(--accent); background: var(--accent-soft); border-radius: 6px; padding: 6px 7px; }
.feed-verb { font-size: 0.92rem; font-weight: 550; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.feed-verb .sys { color: var(--blue); }
.feed-tag { font: 500 0.7rem/1 var(--font-mono); padding: 5px 8px; border-radius: 999px; white-space: nowrap; }
.feed-tag.ok { color: var(--accent); background: var(--accent-soft); }
.feed-tag.sys { color: var(--blue); background: var(--blue-soft); }
.feed-tag.bad { color: var(--bad); background: var(--bad-soft); }
.feed-hash { grid-column: 2 / 4; font: 400 0.7rem/1.3 var(--font-mono); color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.ledger-foot { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 6px; }
.stat { background: rgba(255, 255, 255, 0.03); border: 1px solid var(--line); border-radius: 12px; padding: 12px; min-width: 0; }
.stat-label { font-size: 0.72rem; color: var(--muted); line-height: 1.3; }
.stat-value { font: 600 1.15rem/1.3 var(--font-mono); margin-top: 4px; font-variant-numeric: tabular-nums; }
.stat-value.ok { color: var(--accent); }

/* ---------- Striscia dei fondamentali ---------- */
.proof { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.proof ul { display: grid; grid-template-columns: repeat(2, 1fr); margin: 0; padding: 0; list-style: none; }
@media (min-width: 900px) { .proof ul { grid-template-columns: repeat(4, 1fr); } }
.proof li { padding: 26px 16px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
@media (min-width: 900px) { .proof li { border-bottom: 0; } .proof li:last-child { border-right: 0; } }
.proof li:nth-child(2n) { border-right: 0; }
@media (min-width: 900px) { .proof li:nth-child(2n) { border-right: 1px solid var(--line); } .proof li:last-child { border-right: 0; } }
.proof strong { display: block; font: 600 1.05rem/1.3 var(--font-mono); color: var(--text); }
.proof span { font-size: 0.86rem; color: var(--muted); }

/* ---------- Sezioni ---------- */
.section { padding: 88px 0; position: relative; }
@media (min-width: 960px) { .section { padding: 128px 0; } }
.section-alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 760px; margin-bottom: 48px; }
.section-head .lead { margin-top: 18px; margin-bottom: 0; }
.kicker { display: inline-block; font: 500 0.76rem/1 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); margin-bottom: 16px; }

/* Il client racconta, il server giudica */
.judge { display: grid; gap: 18px; align-items: stretch; }
@media (min-width: 960px) { .judge { grid-template-columns: 1fr auto 1fr; gap: 24px; } }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; min-width: 0; }
.panel-label { display: flex; align-items: center; gap: 10px; font: 600 0.78rem/1 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin-bottom: 18px; }
.panel-label svg { width: 18px; height: 18px; color: var(--blue); }
.events { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.events li { display: flex; justify-content: space-between; gap: 12px; padding: 10px 12px; border-radius: 10px; background: rgba(255, 255, 255, 0.03); font-size: 0.9rem; }
.events .mono { color: var(--muted); font-size: 0.8rem; white-space: nowrap; }
.judge-arrow { display: grid; place-items: center; color: var(--accent); }
.judge-arrow svg { width: 48px; height: 48px; transform: rotate(90deg); }
@media (min-width: 960px) { .judge-arrow svg { transform: none; } }
.judge-arrow .flow { stroke-dasharray: 6 8; animation: dash 1.2s linear infinite; }
.findings { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.findings li { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: start; padding: 10px 12px; border-radius: 10px; background: rgba(255, 255, 255, 0.03); font-size: 0.9rem; }
.findings svg { width: 18px; height: 18px; margin-top: 2px; }
.findings .ok svg { color: var(--accent); }
.findings .bad svg { color: var(--bad); }
.findings small { display: block; color: var(--muted); font-size: 0.8rem; }
.verdict { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 14px; padding: 14px; border-radius: 12px; border: 1px solid rgba(67, 227, 178, 0.35); background: var(--accent-soft); }
.verdict b { font: 600 0.9rem/1.2 var(--font-mono); color: var(--accent); }
.verdict span { font-size: 0.82rem; color: var(--muted); }

/* ---------- Griglia delle funzioni ---------- */
.bento { display: grid; gap: 18px; }
@media (min-width: 760px) { .bento { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .bento { grid-template-columns: repeat(6, 1fr); } .span-3 { grid-column: span 3; } .span-2 { grid-column: span 2; } .span-4 { grid-column: span 4; } }

.card {
  position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; overflow: hidden; min-width: 0;
  transition: border-color 0.3s, transform 0.4s var(--ease);
}
.card:hover { border-color: var(--line-strong); }
/* Icona in linea con il titolo, non in una piastrella sopra. */
.card:has(> .card-icon) { display: grid; grid-template-columns: auto 1fr; column-gap: 12px; align-content: start; }
.card:has(> .card-icon) > :not(.card-icon):not(h3) { grid-column: 1 / -1; }
.card h3 { margin-bottom: 0; align-self: center; }
.card p { color: var(--muted); margin: 12px 0 0; font-size: 0.96rem; }
.card-icon { display: block; color: var(--accent); align-self: center; }
.card-icon svg { width: 24px; height: 24px; }
.demo { margin-top: 22px; }

/* Controllo di presenza */
.challenge { display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: center; background: var(--bg-2); border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.ring { position: relative; width: 64px; height: 64px; }
.ring svg { width: 64px; height: 64px; transform: rotate(-90deg); }
.ring circle { fill: none; stroke-width: 5; }
.ring .track { stroke: var(--line-strong); }
.ring .bar { stroke: var(--accent); stroke-linecap: round; stroke-dasharray: 176; stroke-dashoffset: 0; }
.ring.is-running .bar { animation: countdown var(--secs, 8s) linear forwards; }
.ring b { position: absolute; inset: 0; display: grid; place-items: center; font: 600 0.9rem/1 var(--font-mono); }
.challenge-body { min-width: 0; }
.challenge-type { font: 500 0.72rem/1 var(--font-mono); color: var(--blue); letter-spacing: 0.08em; text-transform: uppercase; }
.challenge-prompt { margin-top: 8px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; min-height: 44px; }
.glyphs { white-space: nowrap; font: 700 clamp(1.1rem, 4.4vw, 1.5rem)/1 var(--font-mono); letter-spacing: 0.16em; color: var(--text); background: repeating-linear-gradient(-45deg, rgba(255,255,255,0.04) 0 6px, transparent 6px 12px); padding: 8px 10px; border-radius: 8px; transform: skewX(-6deg); }
.challenge-dots { display: flex; gap: 6px; margin-top: 14px; }
.challenge-dots i { width: 22px; height: 4px; border-radius: 2px; background: var(--line-strong); transition: background-color 0.3s; }
.challenge-dots i.on { background: var(--accent); }
.swap { transition: opacity 0.35s var(--ease), transform 0.35s var(--ease); }
.swap.is-out { opacity: 0; transform: translateY(6px); }

/* Copertura video */
.video { background: var(--bg-2); border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.track-bar { position: relative; height: 12px; border-radius: 6px; background: rgba(255, 255, 255, 0.06); overflow: hidden; }
.seg { position: absolute; top: 0; bottom: 0; transform-origin: left center; transform: scaleX(0); transition: transform 1.1s var(--ease); }
.seg.ok { background: var(--accent); }
.seg.bad { background: repeating-linear-gradient(-45deg, var(--bad) 0 5px, rgba(255, 122, 122, 0.4) 5px 10px); }
.is-in .seg { transform: scaleX(1); }
.is-in .seg:nth-child(2) { transition-delay: 0.6s; }
.is-in .seg:nth-child(3) { transition-delay: 1.2s; }
.is-in .seg:nth-child(4) { transition-delay: 1.8s; }
.legend { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 14px; font-size: 0.82rem; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 8px; }
.legend i { width: 12px; height: 12px; border-radius: 3px; }
.legend .ok { background: var(--accent); }
.legend .bad { background: var(--bad); }
.video-stats { display: flex; justify-content: space-between; gap: 10px; margin-top: 14px; font: 500 0.84rem/1.3 var(--font-mono); color: var(--muted); }
.video-stats b { color: var(--accent); font-weight: 600; }

/* Catena interattiva */
.chain { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.block {
  position: relative; background: var(--bg-2); border: 1px solid rgba(67, 227, 178, 0.35); border-radius: 12px; padding: 12px 8px;
  text-align: center; transition: border-color 0.35s, background-color 0.35s, transform 0.35s var(--ease);
}
.block:not(:last-child)::after {
  content: ""; position: absolute; top: 50%; right: -9px; width: 10px; height: 2px; background: var(--accent);
  transition: background-color 0.35s;
}
.block b { display: block; font: 600 0.72rem/1 var(--font-mono); color: var(--muted); }
.block code { display: block; margin-top: 8px; font: 500 0.7rem/1.2 var(--font-mono); color: var(--accent); overflow: hidden; text-overflow: ellipsis; transition: color 0.35s; }
.block.is-broken { border-color: rgba(255, 122, 122, 0.55); background: var(--bad-soft); }
.block.is-broken code { color: var(--bad); }
.block.is-broken::after { background: var(--bad); }
.block.is-edited { transform: translateY(-4px); }
.chain-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 16px; }
.chain-status { display: inline-flex; align-items: center; gap: 8px; font: 600 0.82rem/1.3 var(--font-mono); color: var(--accent); }
.chain-status.bad { color: var(--bad); }
.chain-status svg { width: 18px; height: 18px; }

/* Albero di Merkle */
.merkle svg { width: 100%; height: auto; }
.merkle .edge { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-dasharray: 120; stroke-dashoffset: 120; transition: stroke-dashoffset 1s var(--ease); }
.merkle .node { fill: var(--bg-2); stroke: var(--line-strong); transition: stroke 0.5s, fill 0.5s; }
.merkle text { fill: var(--muted); font: 500 10px var(--font-mono); }
.merkle .seal { opacity: 0; transform: scale(0.6); transform-origin: 160px 15px; transform-box: view-box; transition: opacity 0.5s var(--ease), transform 0.6s var(--ease); }
.merkle.is-in .edge { stroke-dashoffset: 0; }
.merkle.is-in .l2 { transition-delay: 0.7s; }
.merkle.is-in .node { stroke: var(--accent); }
.merkle.is-in .seal { opacity: 1; transform: scale(1); transition-delay: 1.5s; }
.merkle .seal-text { fill: var(--accent-ink); font-weight: 700; }

/* Organizzazioni */
.tenants { display: grid; gap: 8px; }
.tenant { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 12px; background: var(--bg-2); border: 1px solid var(--line); font: 500 0.86rem/1.3 var(--font-mono); min-width: 0; }
.tenant i { width: 10px; height: 10px; border-radius: 3px; flex: none; }
.tenant span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tenant .lock { margin-left: auto; width: 16px; height: 16px; color: var(--muted); flex: none; }

/* SSO */
.sso { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 6px; }
.sso-step { text-align: center; padding: 14px 6px; border-radius: 12px; background: var(--bg-2); border: 1px solid var(--line); font-size: 0.8rem; min-width: 0; }
.sso-step b { display: block; font: 600 0.72rem/1.2 var(--font-mono); color: var(--accent); margin-bottom: 4px; }
.sso-arrow { width: 22px; height: 22px; color: var(--muted); }
.ticket { animation: ticket 3.2s var(--ease) infinite; }

/* Regole */
.rules { display: grid; gap: 14px; }
.rule { display: grid; gap: 8px; }
.rule-top { display: flex; justify-content: space-between; gap: 12px; font-size: 0.86rem; color: var(--muted); }
.rule-top b { font: 600 0.84rem/1.3 var(--font-mono); color: var(--text); }
.rule-bar { height: 6px; border-radius: 3px; background: rgba(255, 255, 255, 0.07); overflow: hidden; }
.rule-bar i { display: block; height: 100%; width: 100%; border-radius: 3px; background: linear-gradient(90deg, var(--blue), var(--accent)); transform-origin: left; transform: scaleX(0); transition: transform 1.2s var(--ease); }
.is-in .rule-bar i { transform: scaleX(var(--v)); }

/* Audit */
.audit { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.audit li { display: grid; grid-template-columns: auto 1fr auto; gap: 10px; align-items: center; padding: 10px 12px; border-radius: 10px; background: var(--bg-2); border: 1px solid var(--line); font-size: 0.86rem; }
.audit .mono { color: var(--muted); font-size: 0.75rem; }
.audit .voided span { text-decoration: line-through; color: var(--muted); }
.audit .tag { font: 500 0.7rem/1 var(--font-mono); padding: 5px 8px; border-radius: 999px; color: var(--warn); background: rgba(255, 190, 92, 0.14); white-space: nowrap; }

/* ---------- xAPI ---------- */
.xapi { display: grid; gap: 40px; align-items: start; }
@media (min-width: 960px) { .xapi { grid-template-columns: 0.9fr 1.1fr; gap: 56px; } }
.checks { display: grid; gap: 16px; margin: 30px 0 0; padding: 0; list-style: none; }
.checks li { display: grid; grid-template-columns: auto 1fr; gap: 14px; }
.checks svg { width: 22px; height: 22px; color: var(--accent); margin-top: 2px; }
.checks b { display: block; }
.checks span { color: var(--muted); font-size: 0.94rem; }

.code {
  background: #070c17; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; min-width: 0;
}
.code-bar { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--line); font: 500 0.78rem/1 var(--font-mono); color: var(--muted); }
.code-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); }
.code-bar .method { margin-left: 8px; color: var(--accent); font-weight: 600; }
.code pre { margin: 0; padding: 18px 20px; overflow-x: auto; font: 400 0.8rem/1.7 var(--font-mono); color: #c9d5ea; }
@media (min-width: 720px) { .code pre { font-size: 0.86rem; } }
.code .k { color: var(--blue); }
.code .s { color: var(--accent); }
.code .n { color: var(--warn); }
.code .c { color: #6c7a93; }
.code-line { display: block; opacity: 0; transform: translateX(-6px); transition: opacity 0.4s var(--ease), transform 0.4s var(--ease); transition-delay: calc(var(--i, 0) * 45ms); }
.is-in .code-line { opacity: 1; transform: none; }
.code-resp { display: flex; flex-wrap: wrap; gap: 8px; padding: 14px 20px; border-top: 1px solid var(--line); font: 500 0.78rem/1 var(--font-mono); }
.code-resp span { padding: 6px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.code-resp span.b { background: var(--blue-soft); color: var(--blue); }
.code-resp span.r { background: var(--bad-soft); color: var(--bad); }

/* ---------- Per chi ---------- */
.audience { display: grid; gap: 18px; }
@media (min-width: 760px) { .audience { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .audience { grid-template-columns: repeat(4, 1fr); } }
.audience .card p { font-size: 0.93rem; }
.audience .card ul { margin: 16px 0 0; padding: 0; list-style: none; display: grid; gap: 8px; font-size: 0.88rem; }
.audience .card li { display: flex; gap: 8px; }
.audience .card li::before { content: ""; width: 6px; height: 6px; margin-top: 9px; border-radius: 50%; background: var(--accent); flex: none; }

/* ---------- Sicurezza e percorso ---------- */
.two { display: grid; gap: 18px; }
@media (min-width: 900px) { .two { grid-template-columns: 1fr 1fr; } }
.list-plain { margin: 0; padding: 0; list-style: none; display: grid; gap: 14px; }
.list-plain li { display: grid; grid-template-columns: auto 1fr; gap: 12px; color: var(--muted); font-size: 0.95rem; }
.list-plain li b { color: var(--text); font-weight: 600; }
.list-plain svg { width: 20px; height: 20px; color: var(--accent); margin-top: 2px; }
.roadmap { margin: 0; padding: 0; list-style: none; display: grid; gap: 0; }
.roadmap li { position: relative; display: grid; grid-template-columns: auto 1fr; gap: 14px; padding-bottom: 18px; }
.roadmap li:not(:last-child)::before { content: ""; position: absolute; left: 7px; top: 20px; bottom: 0; width: 2px; background: var(--line-strong); }
.roadmap .pin { width: 16px; height: 16px; border-radius: 50%; margin-top: 4px; border: 2px solid var(--accent); background: var(--accent); }
.roadmap .soon .pin { background: transparent; border-color: var(--muted); }
.roadmap b { display: block; }
.roadmap span { color: var(--muted); font-size: 0.92rem; }
.roadmap .soon b { color: var(--muted); }

/* ---------- Chiamata finale ---------- */
.final { text-align: center; }
.final-box {
  position: relative; overflow: hidden; border-radius: 28px; padding: 64px 22px; border: 1px solid var(--line);
  background: radial-gradient(60% 80% at 50% 0%, rgba(67, 227, 178, 0.18), transparent 70%), var(--card);
}
.final-box .lead { margin: 18px auto 30px; }
.final-box .cta-row { justify-content: center; }
.final small { display: block; margin-top: 18px; color: var(--muted); font-size: 0.86rem; }

/* ---------- Piede ---------- */
.foot { border-top: 1px solid var(--line); padding: 36px 0 44px; color: var(--muted); font-size: 0.88rem; }
.foot .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.foot a { color: var(--muted); }
.foot a:hover { color: var(--text); }

/* ---------- Comparsa allo scroll ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); transition-delay: calc(var(--d, 0) * 90ms); }
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.45; transform: scale(0.85); } }
@keyframes dash { to { stroke-dashoffset: -28; } }
@keyframes countdown { to { stroke-dashoffset: 176; } }
@keyframes ticket { 0% { transform: translateX(-12px); opacity: 0; } 20%, 70% { transform: none; opacity: 1; } 100% { transform: translateX(12px); opacity: 0; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal, .code-line, .feed-item.is-new { opacity: 1; transform: none; }
  .seg { transform: scaleX(1); }
  .rule-bar i { transform: scaleX(var(--v)); }
  .merkle .edge { stroke-dashoffset: 0; }
  .merkle .seal { opacity: 1; transform: none; }
}