/* ==========================================================================
   N3R1-70 — design system
   Palette e trama derivano dal logo del progetto (rete di linee su nero,
   verde-menta luminoso). Titoli in monospazio (logica/codice), testo in
   serif (memoria/letteratura) — la stessa dualità che attraversa i libri.
   ========================================================================== */

:root{
  --bg: #07090a;
  --bg-panel: #0d1210;
  --bg-panel-raised: #101715;
  --line: rgba(150, 255, 210, 0.14);
  --line-strong: rgba(150, 255, 210, 0.28);
  --frame: rgba(255, 255, 255, 0.16);
  --frame-hover: rgba(255, 255, 255, 0.34);
  --accent: #37f2ac;
  --accent-soft: rgba(55, 242, 172, 0.12);
  --accent-dim: #1d6b4f;
  --text: #eef2f0;
  --text-muted: #9fada5;
  --text-faint: #66756d;

  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-display: 'Inter', -apple-system, 'Segoe UI', sans-serif;
  --font-serif: 'Inter', -apple-system, 'Segoe UI', sans-serif;

  --measure: 42em;
  --gutter: clamp(1.25rem, 4vw, 3rem);
}

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

html{ background: var(--bg); color-scheme: dark; }

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a{ color: inherit; }

::selection{ background: var(--accent); color: #04120c; }

h1, h2, h3, h4{
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 0.6em;
}

p{ margin: 0 0 1.2em; }

.measure{ }

/* -------------------------------- backdrop -------------------------------- */

.grid-backdrop{
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% -10%, black 0%, transparent 70%);
          mask-image: radial-gradient(ellipse 80% 60% at 50% -10%, black 0%, transparent 70%);
  opacity: 0.55;
}

/* ---------------------------------- shell ---------------------------------- */

.shell{
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ----------------------------------- nav ------------------------------------ */

.site-header{
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(7, 9, 10, 0.86);
  backdrop-filter: blur(10px);
  z-index: 20;
}

.site-header .shell{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
  gap: 1.5rem;
}

.brand{
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--text);
  white-space: nowrap;
}

.brand img{
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
}

.brand span{ color: var(--accent); }

.main-nav{
  display: flex;
  gap: clamp(1rem, 2.4vw, 1.8rem);
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.86rem;
}

.main-nav a{
  text-decoration: none;
  color: var(--text-muted);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}

.main-nav a:hover,
.main-nav a[aria-current="page"]{
  color: var(--text);
  border-color: var(--accent);
}

.nav-toggle{ display: none; }

@media (max-width: 720px){
  .nav-toggle{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px; height: 38px;
    border: 1px solid var(--line-strong);
    background: transparent;
    color: var(--text);
    font-family: var(--font-mono);
  }
  .main-nav{
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--line);
    padding: 1rem var(--gutter) 1.4rem;
    flex-direction: column;
    gap: 0.9rem;
  }
  .main-nav.is-open{ display: flex; }
}

/* ---------------------------------- hero ------------------------------------ */

.hero{
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(2.5rem, 6vw, 4rem);
  border-bottom: 1px solid var(--line);
}

.hero .shell{
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

@media (max-width: 860px){
  .hero .shell{ grid-template-columns: 1fr; }
  .hero-portrait{ order: -1; max-width: min(440px, 85%); margin: 0 auto; }
}

.eyebrow-id{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  display: block;
  margin-bottom: 1rem;
}

.hero h1{
  font-size: clamp(2.1rem, 4.4vw, 3.4rem);
  margin-bottom: 0.5rem;
}

.hero .subtitle{
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--text-muted);
  font-size: 1.15rem;
  margin-bottom: 1.4rem;
}

.hero p.lede{
  color: var(--text-muted);
  font-size: 1.05rem;
}

.hero-actions{
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.6rem;
}

.hero-portrait{
  position: relative;
}

.hero-portrait img{
  width: 100%;
  height: auto;
  display: block;
  -webkit-mask-image: radial-gradient(ellipse 82% 82% at 50% 45%, black 62%, transparent 100%);
          mask-image: radial-gradient(ellipse 82% 82% at 50% 45%, black 62%, transparent 100%);
}

/* --------------------------------- buttons ---------------------------------- */

.btn{
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  text-decoration: none;
  padding: 0.7em 1.1em;
  border: 1px solid var(--line-strong);
  color: var(--text);
  background: transparent;
  transition: border-color .15s ease, background .15s ease, color .15s ease;
}

.btn:hover{ border-color: var(--accent); color: var(--accent); }

.btn-solid{
  background: var(--accent);
  color: #04140d;
  border-color: var(--accent);
}

.btn-solid:hover{
  background: transparent;
  color: var(--accent);
}

/* --------------------------------- sections ---------------------------------- */

.section{
  padding: clamp(2.6rem, 6vw, 4.5rem) 0;
  border-bottom: 1px solid var(--line);
}

.section:last-of-type{ border-bottom: none; }

.section-head{
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.5rem;
  margin-bottom: clamp(1.6rem, 4vw, 2.4rem);
  flex-wrap: wrap;
}

.section-head h2{ font-size: clamp(1.4rem, 2.6vw, 1.9rem); margin: 0; }

.section-head .section-note{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
}

.section-intro{
  color: var(--text-muted);
  margin-bottom: clamp(1.6rem, 4vw, 2.4rem);
}

/* ------------------------------ book index list ------------------------------- */

.book-index{
  border-top: 1px solid var(--line);
}

.book-row{
  display: grid;
  grid-template-columns: 7.5rem 1fr auto;
  gap: clamp(1rem, 3vw, 2.2rem);
  align-items: center;
  padding: clamp(1.4rem, 3vw, 2rem) 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--text);
}

.book-row:hover .book-row-title{ color: var(--accent); }

.book-mark{
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
  border: 1px solid var(--line-strong);
  padding: 0.5rem 0.4rem;
  text-align: center;
  transition: border-color .15s ease, color .15s ease;
}

.book-thumb{
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border: 1px solid var(--frame);
  transition: border-color .15s ease;
}

.book-row:hover .book-thumb{ border-color: var(--frame-hover); }

.book-row-title{
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  transition: color .15s ease;
  margin-bottom: 0.35rem;
}

.book-row-sub{
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--text-muted);
  font-size: 0.98rem;
}

.book-row-cta{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-faint);
  white-space: nowrap;
}

@media (max-width: 620px){
  .book-row{ grid-template-columns: 5.5rem 1fr; }
  .book-row-cta{ display: none; }
}

/* --------------------------------- book page ---------------------------------- */

.book-hero{
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(1.8rem, 4vw, 3rem);
  align-items: start;
  padding: clamp(2.4rem, 6vw, 4rem) 0;
  border-bottom: 1px solid var(--line);
}

@media (max-width: 720px){
  .book-hero{ grid-template-columns: 1fr; }
  .book-cover{ max-width: 200px; }
}

.book-cover{
  border: 1px solid var(--frame);
  background: var(--bg-panel);
  padding: 8px;
  position: relative;
  box-shadow: 0 30px 60px -30px rgba(0,0,0,0.7);
}

.book-cover img{
  width: 100%;
  height: auto;
  display: block;
}

.book-meta-label{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  display: block;
  margin-bottom: 0.9rem;
}

.book-hero h1{ font-size: clamp(1.8rem, 3.6vw, 2.6rem); }

.book-hero .subtitle{
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 1.3rem;
}

.byline{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-faint);
  margin-top: -0.8rem;
  margin-bottom: 1.3rem;
}

.book-body{
  padding-top: clamp(2rem, 5vw, 3rem);
}

.book-body p{ color: var(--text); }

.book-body p:first-of-type{
  font-size: 1.08rem;
}

.pull{
  border-left: 2px solid var(--accent);
  padding-left: 1.2rem;
  margin: 2rem 0;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--text-muted);
  font-size: 1.1rem;
}

.protocol-list{
  list-style: none;
  margin: 1.6rem 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.protocol-list li{
  border: 1px solid var(--line);
  padding: 0.9rem 1.1rem;
  background: var(--bg-panel);
}

.protocol-list strong{
  font-family: var(--font-mono);
  color: var(--accent);
  display: block;
  font-size: 0.92rem;
  margin-bottom: 0.3rem;
}

/* ----------------------------------- feed ------------------------------------ */

.feed-list{ border-top: 1px solid var(--line); }

.feed-item{
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: clamp(1rem, 3vw, 2rem);
  padding: 1.3rem 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--text);
}

.feed-item:hover .feed-title{ color: var(--accent); }

.feed-date{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
  padding-top: 0.2rem;
}

.feed-title{
  font-family: var(--font-mono);
  font-size: 1rem;
  transition: color .15s ease;
  margin-bottom: 0.3rem;
}

.feed-excerpt{
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
}

.feed-category{
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-dim);
  border: 1px solid var(--accent-dim);
  padding: 0.15rem 0.5rem;
  margin-bottom: 0.5rem;
}

@media (max-width: 620px){
  .feed-item{ grid-template-columns: 1fr; gap: 0.4rem; }
}

.feed-status{
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-faint);
  padding: 1.2rem 0;
}

/* ---------------------------------- panel card -------------------------------- */

.panel{
  border: 1px solid var(--line);
  background: var(--bg-panel);
  padding: clamp(1.6rem, 4vw, 2.4rem);
}

.panel + .panel{ margin-top: 1.2rem; }

.iwnla-card{
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(1.4rem, 4vw, 2.4rem);
  align-items: center;
  border: 1px solid var(--line);
  padding: clamp(1.6rem, 4vw, 2.4rem);
}

@media (max-width: 700px){
  .iwnla-card{ grid-template-columns: 1fr; }
}

.iwnla-card img{ max-width: 220px; max-height: 110px; width: auto; height: auto; object-fit: contain; }

.stat-row{
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.4rem, 4vw, 2.6rem);
  margin-top: 1.6rem;
}

.stat{
  font-family: var(--font-mono);
  text-decoration: none;
  display: block;
}

a.stat{ transition: opacity .15s ease; }
a.stat:hover{ opacity: 0.8; }
a.stat:hover .stat-l{ color: var(--accent); }

.stat .stat-n{
  font-size: 1.6rem;
  color: var(--accent);
  display: block;
}

.stat .stat-l{
  font-size: 0.78rem;
  color: var(--text-faint);
  transition: color .15s ease;
}

/* --------------------------------- about / bio -------------------------------- */

.bio-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

@media (max-width: 780px){
  .bio-grid{ grid-template-columns: 1fr; }
}

.timeline{
  border-left: 1px solid var(--line-strong);
  padding-left: 1.4rem;
  display: grid;
  gap: 1.4rem;
}

.timeline-item .t-mark{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  display: block;
  margin-bottom: 0.3rem;
}

/* ----------------------------------- footer ------------------------------------ */

.site-footer{
  border-top: 1px solid var(--line);
  padding: clamp(2rem, 5vw, 3rem) 0;
}

.site-footer .shell{
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-faint);
}

.site-footer a{ text-decoration: none; color: var(--text-muted); }
.site-footer a:hover{ color: var(--accent); }

.footer-links{ display: flex; gap: 1.2rem; flex-wrap: wrap; }

/* ------------------------------------ misc -------------------------------------- */

.skip-link{
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--accent);
  color: #04140d;
  padding: 0.6rem 1rem;
  font-family: var(--font-mono);
  z-index: 100;
}
.skip-link:focus{ left: var(--gutter); top: 0.6rem; }

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

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}