/* =========================================================
   ia.bodo.solutions — Registro dei progetti con l'IA
   Tema "research/dark" ispirato a Pragma (Web3 research fund):
   quasi-nero freddo, grigi neutri, accento terracotta smorzato,
   tipografia geometrica + monospace, geometria a hairline.
   Un solo file di stile per tutto il sito.
   ========================================================= */

:root {
  /* Palette scura (derivata da #030405 #3B3F3C #747A85 #A4A4A8 #8C6664) */
  --bg:         #060708;
  --bg-2:       #0c0e0f;
  --surface:    #101315;
  --surface-2:  #15181a;
  --ink:        #eceded;
  --ink-soft:   #9298a0;
  --ink-mute:   #6a7178;
  --line:       #23282b;
  --line-soft:  #191c1e;
  --accent:     #c6928b;   /* terracotta smorzato, alzato per leggibilità su scuro */
  --accent-ink: #dcaaa3;   /* hover / enfasi */
  --accent-deep:#8c6664;   /* accento grezzo della palette */
  --accent-soft: rgba(140, 102, 100, .14);

  /* Tipografia */
  --sans:  "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono:  "IBM Plex Mono", ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;

  /* Misure */
  --wrap:    1160px;
  --wrap-sm: 760px;
  --radius:  10px;
  --radius-sm: 6px;
}

/* ---------- Reset leggero ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* geometria strutturata: griglia hairline appena percepibile */
  background-image:
    linear-gradient(to right, rgba(255,255,255,.014) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.014) 1px, transparent 1px);
  background-size: 64px 64px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-ink); text-underline-offset: 3px; }
a:hover { color: var(--accent); }
::selection { background: var(--accent-soft); color: #fff; }

h1, h2, h3 {
  font-family: var(--sans);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 .4em;
  color: #fff;
}
h1 { font-size: clamp(2.4rem, 6.2vw, 4.2rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); }
h3 { font-size: clamp(1.15rem, 2.2vw, 1.4rem); }
p  { margin: 0 0 1.1em; }

.lead {
  font-size: clamp(1.1rem, 2.1vw, 1.35rem);
  line-height: 1.55;
  color: var(--ink-soft);
  font-weight: 400;
}

/* ---------- Layout ---------- */
.wrap   { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: var(--wrap-sm); }
.section { padding: clamp(52px, 8vw, 104px) 0; }
.section--alt { background: var(--bg-2); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.eyebrow {
  font-family: var(--mono);
  font-size: .76rem;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.1rem;
  display: inline-flex; align-items: center; gap: 8px;
}
.eyebrow::before {
  content: ""; width: 22px; height: 1px; background: var(--accent);
  opacity: .6; display: inline-block;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 66px;
}
.brand {
  font-family: var(--sans);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  text-decoration: none;
}
.brand .tld { font-family: var(--mono); font-size: .78em; color: var(--accent); font-weight: 500; }

.nav { display: flex; align-items: center; gap: 26px; }
.nav a {
  font-size: .92rem;
  color: var(--ink-soft);
  text-decoration: none;
  position: relative;
}
.nav a:hover, .nav a[aria-current="page"] { color: #fff; }
.nav a[aria-current="page"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -8px;
  height: 1px; background: var(--accent);
}
.nav .nav-cta {
  background: var(--accent); color: #100b0b;
  padding: 9px 16px; border-radius: var(--radius-sm);
  text-decoration: none; font-weight: 600; font-size: .88rem;
}
.nav .nav-cta:hover { background: var(--accent-ink); color: #100b0b; }

.nav-toggle {
  display: none; background: none; border: 0; cursor: pointer;
  padding: 8px; color: var(--ink);
}
.nav-toggle svg { width: 26px; height: 26px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: clamp(64px, 11vw, 128px) 0 clamp(36px, 6vw, 68px);
  overflow: hidden;
}
.hero::before {
  /* alone d'accento diffuso in alto, molto sottile */
  content: ""; position: absolute; inset: -40% 0 auto 0; height: 480px;
  background: radial-gradient(60% 60% at 30% 0%, var(--accent-soft), transparent 70%);
  pointer-events: none; z-index: 0;
}
.hero .wrap { position: relative; z-index: 1; }
.hero h1 { max-width: 17ch; }
.hero .lead { max-width: 54ch; margin-top: 1.4rem; }
.hero-meta {
  font-family: var(--mono); font-size: .78rem; color: var(--ink-mute);
  margin-top: 2rem; letter-spacing: .02em;
  padding-top: 1.2rem; border-top: 1px solid var(--line);
  display: inline-block;
}
.hero-meta b { color: var(--ink); font-weight: 600; }

/* ---------- Bottoni ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--sans); font-size: .98rem; font-weight: 600;
  padding: 12px 22px; border-radius: var(--radius-sm);
  text-decoration: none; cursor: pointer; border: 1px solid transparent;
  transition: transform .15s ease, background .15s ease, color .15s ease, border-color .15s ease;
}
.btn-primary { background: var(--accent); color: #100b0b; }
.btn-primary:hover { background: var(--accent-ink); color: #100b0b; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink-soft); color: #fff; }

/* ---------- Griglia progetti ---------- */
.projects {
  display: grid; gap: 18px;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  counter-reset: pc;
}
.pcard {
  position: relative;
  display: flex; flex-direction: column;
  counter-increment: pc;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px 20px;
  text-decoration: none; color: inherit;
  transition: border-color .18s ease, transform .18s ease, background .18s ease;
}
.pcard::before {
  content: counter(pc, decimal-leading-zero);
  position: absolute; top: 20px; right: 22px;
  font-family: var(--mono); font-size: .72rem; color: var(--ink-mute);
  letter-spacing: .04em;
}
.pcard:hover {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  background: var(--surface-2);
  transform: translateY(-3px);
}
.pcard h3 { margin: 0 0 .4em; font-size: 1.24rem; letter-spacing: -0.015em; max-width: 22ch; }
.pcard .summary { color: var(--ink-soft); font-size: .95rem; margin: 0; }
.pcard .pcard-foot {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  margin-top: 20px; padding-top: 14px; border-top: 1px solid var(--line);
  font-family: var(--mono); font-size: .72rem; color: var(--ink-mute);
}
.pcard .date { letter-spacing: .03em; }
.pcard .has-artifact {
  margin-left: auto; color: var(--accent); font-weight: 500;
  display: inline-flex; align-items: center; gap: 5px;
}
.pcard .has-artifact svg { width: 13px; height: 13px; }

/* ---------- Tag / strumenti ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 7px; margin: 0; padding: 0; list-style: none; }
.chip {
  font-family: var(--mono); font-size: .73rem; color: var(--ink-soft);
  background: var(--bg-2); border: 1px solid var(--line);
  padding: 3px 9px; border-radius: 4px;
}
a.chip-link { text-decoration: none; transition: border-color .15s ease, color .15s ease, background .15s ease; }
a.chip-link:hover { border-color: var(--accent); color: var(--accent-ink); background: var(--accent-soft); }

/* ---------- Banner filtro per tag ---------- */
.tag-banner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 12px; margin: 0 0 28px; padding: 13px 16px;
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface);
  font-family: var(--mono); font-size: .8rem; color: var(--ink-soft);
}
.tag-banner b.chip { color: var(--accent-ink); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.tag-banner a { color: #fff; text-decoration: none; white-space: nowrap; }
.tag-banner a:hover { color: var(--accent); }

/* ---------- Badge "aggiornato" ---------- */
.updated {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .02em;
  color: var(--accent); background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  padding: 1px 8px; border-radius: 100px; white-space: nowrap;
}
.detail-head .meta-row .updated { font-size: .74rem; padding: 3px 11px; }

/* ---------- Timeline delle evoluzioni ---------- */
.timeline { list-style: none; margin: 0; padding: 0; }
.tappa {
  position: relative;
  display: grid; grid-template-columns: 132px 1fr; gap: 18px;
  padding: 0 0 22px 0;
}
.tappa:not(:last-child) .tappa-data::after {
  /* filo verticale che unisce le tappe */
  content: ""; position: absolute; left: 4px; top: 18px; bottom: 0;
  width: 1px; background: var(--line);
}
.tappa-data {
  position: relative; padding-left: 18px;
  font-family: var(--mono); font-size: .76rem; color: var(--ink-mute);
  letter-spacing: .02em; padding-top: 2px;
}
.tappa-data::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--accent);
}
.tappa:first-child .tappa-data::before { background: var(--accent); }
.tappa-corpo h3 {
  font-size: 1.02rem; font-weight: 600; margin: 0 0 .3em;
  letter-spacing: -0.01em; color: var(--ink);
}
.tappa-corpo p { margin: 0; color: var(--ink-soft); font-size: .94rem; }

/* ---------- Progetti collegati (sidebar) ---------- */
.related { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.related a {
  color: var(--ink); text-decoration: none; font-size: .92rem;
  display: block; line-height: 1.35;
  padding-left: 14px; position: relative;
}
.related a::before {
  content: "→"; position: absolute; left: 0; color: var(--accent);
  font-size: .82rem;
}
.related a:hover { color: var(--accent-ink); }

/* ---------- Empty state ---------- */
.empty {
  grid-column: 1 / -1; text-align: center; color: var(--ink-mute);
  font-family: var(--mono); font-size: .88rem; padding: 44px 0;
}

/* =========================================================
   Pagina di dettaglio progetto
   ========================================================= */
.detail-head { padding: clamp(44px, 8vw, 88px) 0 clamp(22px, 4vw, 40px); }
.back-link {
  font-family: var(--mono); font-size: .78rem; text-decoration: none;
  color: var(--ink-mute); display: inline-flex; align-items: center; gap: 6px;
  margin-bottom: 1.8rem;
}
.back-link:hover { color: var(--accent); }
.detail-head .meta-row {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
  margin-bottom: 1.3rem;
}
.detail-head .meta-row .date { font-family: var(--mono); font-size: .8rem; color: var(--ink-mute); }
.detail-head h1 { max-width: 22ch; }
.detail-head .lead { max-width: 58ch; margin-top: 1.1rem; }

.detail-body {
  display: grid; gap: clamp(28px, 5vw, 60px);
  grid-template-columns: 1.5fr 0.6fr; align-items: start;
}
.detail-main > section { margin-bottom: 2.6rem; }
.detail-main h2 { font-size: clamp(1.25rem, 2.6vw, 1.6rem); }
.detail-main .field-label {
  font-family: var(--mono); font-size: .74rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--accent); margin: 0 0 .8rem;
  display: flex; align-items: center; gap: 8px;
}
.detail-main .field-label::before {
  content: ""; width: 18px; height: 1px; background: var(--accent); opacity: .5;
}
.detail-main p { color: var(--ink-soft); }
.detail-main p + p { margin-top: -.2rem; }

/* Sidebar dettaglio */
.detail-side {
  position: sticky; top: 90px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px;
}
.detail-side h3 {
  font-family: var(--mono); font-size: .74rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink-mute); font-weight: 500;
  margin: 0 0 1rem;
}
.detail-side .side-block { margin-bottom: 1.7rem; }
.detail-side .side-block:not(:last-child) { padding-bottom: 1.7rem; border-bottom: 1px solid var(--line-soft); }
.detail-side .side-block:last-child { margin-bottom: 0; }
.detail-side dl { margin: 0; }
.detail-side dt {
  font-family: var(--mono); font-size: .7rem; letter-spacing: .06em;
  text-transform: uppercase; color: var(--ink-mute); margin-bottom: 3px;
}
.detail-side dd { margin: 0 0 .9rem; font-size: .93rem; color: var(--ink); }
.detail-side dd:last-child { margin-bottom: 0; }

/* Blocco artefatto */
.artifact {
  border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--line));
  border-radius: var(--radius);
  background: var(--accent-soft);
  padding: 22px; margin: 0 0 2.6rem;
}
.artifact .field-label { color: var(--accent-ink); }
.artifact p { color: var(--ink); font-size: .95rem; margin-bottom: 1.1rem; }
.artifact .privacy-note {
  font-family: var(--mono); font-size: .74rem; color: var(--accent-ink);
  margin: 14px 0 0; display: flex; align-items: center; gap: 6px;
}

/* Embed app */
.embed-frame {
  width: 100%; height: 540px; border: 1px solid var(--line);
  border-radius: var(--radius); background: #0b0d0e; margin-top: 1.4rem;
}

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.cta-band h2 { color: #fff; }
.cta-band p { color: var(--ink-soft); }
.cta-band .btn-primary { background: var(--accent); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 52px 0 44px;
  font-size: .88rem; color: var(--ink-soft);
  background: var(--bg-2);
}
.site-footer .wrap { display: grid; gap: 28px; grid-template-columns: 1.5fr 1fr 1fr; }
.site-footer h4 { font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink); margin: 0 0 .9rem; font-weight: 500; }
.site-footer a { color: var(--ink-soft); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; }
.footer-legal { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 24px; margin-top: 8px; font-size: .78rem; font-family: var(--mono); color: var(--ink-mute); }

/* ---------- Utility ---------- */
.center { text-align: center; }
.hidden { display: none !important; }
.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #100b0b; padding: 10px 16px; z-index: 100;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .nav {
    position: fixed; inset: 66px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg-2); border-bottom: 1px solid var(--line);
    padding: 8px 24px 20px; transform: translateY(-140%);
    transition: transform .25s ease; box-shadow: 0 20px 40px rgba(0,0,0,.5);
  }
  .nav.open { transform: translateY(0); }
  .nav a { padding: 14px 0; border-bottom: 1px solid var(--line-soft); }
  .nav .nav-cta { text-align: center; margin-top: 14px; border-bottom: 0; }
  .nav a[aria-current="page"]::after { display: none; }
  .nav-toggle { display: inline-flex; }

  .detail-body { grid-template-columns: 1fr; }
  .detail-side { position: static; }
  .site-footer .wrap { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  body { font-size: 16px; background-size: 48px 48px; }
  .site-footer .wrap { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}