/* Bardo — foglio di stile unico, autonomo, senza dipendenze esterne */

:root {
  --bg:        #0b0e14;
  --bg-soft:   #10141d;
  --panel:     #141926;
  --panel-2:   #1a2030;
  --border:    #262e40;
  --text:      #e8ebf2;
  --muted:     #98a2b8;
  --dim:       #6d7789;
  --accent:    #6ea8fe;
  --accent-2:  #a06eff;
  --term:      #3ecf8e;
  --mono:      ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;
  --radius:    16px;
  --maxw:      980px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}

/* alone di fondo, molto sobrio */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 520px at 15% -8%, rgba(110,168,254,.13), transparent 60%),
    radial-gradient(800px 480px at 95% 8%, rgba(160,110,255,.10), transparent 60%);
  z-index: 0;
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- intestazione ---------- */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 0 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
}

.brand img {
  width: 42px; height: 42px; border-radius: 11px;
  box-shadow: 0 0 0 1px var(--border), 0 6px 18px -8px rgba(110,168,254,.7);
}

.brand-text { display: flex; flex-direction: column; line-height: 1.12; }

.brand-text .domain {
  font-family: var(--mono);
  font-size: 16.5px;
  font-weight: 600;
  letter-spacing: -.03em;
}
.brand-text .domain .tld {
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.brand-text .project {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--dim);
  margin-top: 3px;
}
.brand-text .project .tick { color: var(--accent-2); }

.cursor { color: var(--term); animation: blink 1.05s steps(1) infinite; margin-left: 1px; }
@keyframes blink { 50% { opacity: 0; } }

.nav { display: flex; gap: 22px; font-size: 14px; }
.nav a { color: var(--muted); text-decoration: none; transition: color .15s ease; }
.nav a:hover { color: var(--text); }

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

.neural-hero {
  position: relative;
  padding: 62px 0 70px;
  isolation: isolate;
}

/* griglia tecnica di fondo */
.neural-hero::before {
  content: "";
  position: absolute;
  inset: -24px -40px 0;
  background-image:
    linear-gradient(rgba(110,168,254,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110,168,254,.06) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(120% 90% at 75% 40%, #000 0%, transparent 72%);
          mask-image: radial-gradient(120% 90% at 75% 40%, #000 0%, transparent 72%);
  z-index: 0;
}

.neural-hero .art {
  position: absolute;
  inset: -30px -60px -10px 34%;
  z-index: 0;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 34%, #000 82%, transparent 100%);
          mask-image: linear-gradient(90deg, transparent 0%, #000 34%, #000 82%, transparent 100%);
  opacity: .95;
}

.neural-hero .art .net { width: 100%; height: 100%; display: block; }

/* archi e nodi */
.net .edge { stroke: rgba(110,168,254,.22); stroke-width: 1; fill: none; }
.net .edge.flow {
  stroke: rgba(160,110,255,.85);
  stroke-width: 1.4;
  stroke-dasharray: 3 402;
  animation: flow 4.2s linear infinite;
}
@keyframes flow { from { stroke-dashoffset: 0; } to { stroke-dashoffset: -405; } }

.net .node .halo {
  fill: rgba(110,168,254,.16);
  transform-box: fill-box; transform-origin: center;
  animation: halo 3.4s ease-in-out infinite;
}
@keyframes halo {
  0%, 100% { transform: scale(.65); opacity: .30; }
  50%      { transform: scale(1.55); opacity: .04; }
}
.net .node .n { fill: #0b0e14; stroke: rgba(110,168,254,.55); stroke-width: 1.4; }
.net .node .core { fill: url(#ng); }

.neural-hero .content { position: relative; z-index: 1; max-width: 660px; }

.term {
  display: inline-block;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  background: rgba(11,14,20,.7);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 12px;
  margin-bottom: 22px;
}
.term .ok  { color: var(--term); }
.term .dim { color: var(--dim); }

.neural-hero h1 {
  font-size: clamp(2.1rem, 5.6vw, 3.35rem);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: -.03em;
}

.neural-hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.neural-hero p {
  margin-top: 22px;
  font-size: 1.075rem;
  color: var(--muted);
  max-width: 60ch;
}

/* ---------- in primo piano ---------- */

.keypoints {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  padding: 6px 0 58px;
}

.kp {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(110,168,254,.08), rgba(20,25,38,.55));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 26px 26px 28px;
}
.kp::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent), transparent);
}
.kp .kp-tag {
  display: block;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.kp h3 {
  font-size: 1.18rem;
  font-weight: 660;
  letter-spacing: -.02em;
  line-height: 1.3;
  margin-bottom: 12px;
}
.kp p { color: var(--muted); font-size: .95rem; }
.kp p + p { margin-top: 12px; }
.kp p strong { color: var(--text); font-weight: 600; }
.kp p em { color: var(--text); font-style: italic; }

.kp.key {
  border-color: rgba(160,110,255,.45);
  background: linear-gradient(180deg, rgba(160,110,255,.13), rgba(20,25,38,.6));
  box-shadow: 0 26px 60px -34px rgba(160,110,255,.9);
}
.kp.key::before { background: linear-gradient(180deg, var(--accent-2), transparent); }
.kp.key .kp-tag { color: var(--accent-2); }

.rule {
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
  border: 0;
}

/* ---------- sezioni ---------- */

section { padding: 66px 0; }

.label {
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 24px;
}

h2 {
  font-size: clamp(1.4rem, 3.2vw, 1.85rem);
  font-weight: 650;
  letter-spacing: -.02em;
  margin-bottom: 14px;
}

.lead { color: var(--muted); max-width: 62ch; margin-bottom: 30px; font-size: .97rem; }

.prose { max-width: 66ch; color: var(--muted); }
.prose p + p { margin-top: 16px; }
.prose strong { color: var(--text); font-weight: 600; }

/* ---------- news ---------- */

.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.news {
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 20px 18px;
  text-decoration: none;
  color: var(--text);
  transition: transform .15s ease, border-color .15s ease;
}
.news:hover { transform: translateY(-3px); border-color: var(--accent); }

.news .ndate {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.news h3 { font-size: 1.02rem; font-weight: 640; line-height: 1.35; margin-bottom: 8px; }
.news p { font-size: .9rem; color: var(--muted); flex: 1; }
.news .src {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--dim);
  margin-top: 14px;
}
.news .src .arw { color: var(--accent-2); }
.news:hover .src { color: var(--muted); }

.note {
  margin-top: 22px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--dim);
}

/* ---------- articoli ---------- */

.arts {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.art {
  display: flex;
  gap: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent-2);
  border-radius: var(--radius);
  padding: 22px 22px;
}
.art .anum {
  flex: none;
  font-family: var(--mono);
  font-size: .8rem;
  color: var(--accent-2);
  padding-top: 3px;
}
.art h3 { font-size: 1.02rem; font-weight: 640; margin-bottom: 8px; }
.art p { font-size: .925rem; color: var(--muted); }
.art p + p { margin-top: 12px; }
.art p strong { color: var(--text); font-weight: 600; }
.art p em { color: var(--text); font-style: italic; }

/* ---------- elenco principi ---------- */

.principles {
  list-style: none;
  margin-top: 26px;
  border-top: 1px solid var(--border);
}
.principles li {
  display: flex;
  gap: 20px;
  align-items: baseline;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.principles b {
  flex: none;
  width: 28px;
  font-size: .8rem;
  font-variant-numeric: tabular-nums;
  color: var(--accent-2);
  font-weight: 600;
}
.principles div { color: var(--muted); font-size: .96rem; }
.principles div span { color: var(--text); font-weight: 600; }

/* ---------- stato ---------- */

.status {
  margin-top: 24px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  color: var(--muted);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 14px;
}
.status .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--term);
  box-shadow: 0 0 0 0 rgba(62,207,142,.5);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(62,207,142,.42); }
  70%  { box-shadow: 0 0 0 8px rgba(62,207,142,0); }
  100% { box-shadow: 0 0 0 0 rgba(62,207,142,0); }
}

/* ---------- piede ---------- */

footer {
  border-top: 1px solid var(--border);
  margin-top: 40px;
  padding: 30px 0 56px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--dim);
}
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--text); }

/* ---------- mobile ---------- */

@media (max-width: 720px) {
  .nav { display: none; }
  .neural-hero { padding: 44px 0 52px; }
  .keypoints { grid-template-columns: 1fr; padding-bottom: 44px; }
  .neural-hero .art { inset: 30% -30px -10px 6%; opacity: .7; }
  .neural-hero .content { max-width: 100%; }
  section { padding: 50px 0; }
  .principles li { gap: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .status .dot, .cursor { animation: none; }
  .net .edge.flow { animation: none; stroke-dasharray: none; stroke: rgba(160,110,255,.4); }
  .net .node .halo { animation: none; }
}