/* =========================================================
   GTL Technology — Foglio di stile principale
   Tema: dark tech, corporate. Palette viola / antracite + accento ciano.
   ========================================================= */

/* Font self-hosted (nessuna richiesta a terze parti) */
@font-face{font-family:"Inter";font-style:normal;font-weight:100 900;font-display:swap;src:url("../fonts/inter.woff2") format("woff2");}
@font-face{font-family:"Space Grotesk";font-style:normal;font-weight:300 700;font-display:swap;src:url("../fonts/space-grotesk.woff2") format("woff2");}

:root {
  /* Colori */
  --bg:        #0C0916;
  --bg-2:      #100B1C;
  --surface:   #161024;
  --surface-2: #1C1430;
  --border:    #2A2140;
  --border-2:  #38294f;
  --violet:    #8B5CF6;
  --violet-600:#7C3AED;
  --violet-400:#A78BFA;
  --violet-200:#C4B5FD;
  --cyan:      #22D3EE;
  --cyan-dim:  #0E7490;
  --text:      #ECEAF4;
  --text-muted:#A8A3BD;
  --text-dim:  #726E89;
  --white:     #ffffff;
  --danger:    #F87171;
  --ok:        #34D399;

  /* Layout */
  --maxw: 1140px;
  --radius: 14px;
  --radius-sm: 10px;
  --radius-lg: 20px;
  --gap: 24px;

  /* Tipografia */
  --font-head: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;

  /* Ombre */
  --shadow: 0 18px 40px -18px rgba(0,0,0,.65);
  --shadow-violet: 0 18px 50px -22px rgba(124,58,237,.55);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Sfondo decorativo: glow + griglia leggera */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(680px 480px at 82% -8%, rgba(124,58,237,.22), transparent 60%),
    radial-gradient(560px 420px at 8% 8%, rgba(34,211,238,.10), transparent 60%),
    var(--bg);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 75%);
  pointer-events: none;
}

img { max-width: 100%; display: block; }
a { color: var(--violet-400); text-decoration: none; transition: color .18s ease; }
a:hover { color: var(--violet-200); }

h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 600; line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.02em; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.22rem; }
p  { margin: 0 0 1rem; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 22px; }

/* ---------- Utility ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-head);
  font-size: .78rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--violet-200);
  background: rgba(124,58,237,.10);
  border: 1px solid var(--border-2);
  padding: 6px 14px; border-radius: 999px;
}
.eyebrow::before { content:""; width:6px; height:6px; border-radius:50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.lead { font-size: 1.12rem; color: var(--text-muted); max-width: 60ch; }
.text-cyan { color: var(--cyan); }
.text-violet { color: var(--violet-400); }
.center { text-align: center; }
.center .lead { margin-inline: auto; }

section { padding: 84px 0; position: relative; }
.section-head { max-width: 64ch; margin-bottom: 48px; }
.section-head.center { margin-inline: auto; }

/* ---------- Bottoni ---------- */
.btn {
  --b: var(--violet-600);
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-head); font-weight: 600; font-size: .98rem;
  padding: 13px 24px; border-radius: 999px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--violet) 0%, var(--violet-600) 100%);
  box-shadow: var(--shadow-violet);
}
.btn-primary:hover { transform: translateY(-2px); color:#fff; box-shadow: 0 22px 60px -20px rgba(124,58,237,.8); }
.btn-ghost {
  color: var(--text); background: rgba(255,255,255,.02);
  border-color: var(--border-2);
}
.btn-ghost:hover { color:#fff; border-color: var(--violet); background: rgba(124,58,237,.12); transform: translateY(-2px); }
.btn-lg { padding: 16px 30px; font-size: 1.05rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(12,9,22,.72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 70px; gap: 20px; }
.logo { display: inline-flex; align-items: center; gap: 12px; color: var(--text); }
.logo:hover { color: var(--text); }
.logo img { width: 38px; height: 38px; }
.logo-text { font-family: var(--font-head); font-weight: 700; font-size: 1.16rem; letter-spacing: -.01em; line-height: 1; }
.logo-text span { color: var(--violet-400); font-weight: 500; }

.nav-links { display: flex; align-items: center; gap: 6px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  display: block; color: var(--text-muted); font-weight: 500; font-size: .96rem;
  padding: 8px 14px; border-radius: 8px; transition: color .15s ease, background .15s ease;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,.04); }
.nav-links a.active { color: var(--white); }
.nav-cta { margin-left: 8px; }

.nav-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--border-2);
  background: rgba(255,255,255,.02); border-radius: 10px; cursor: pointer; padding: 0;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 20px; height: 2px; background: var(--text);
  margin: 0 auto; position: relative; transition: transform .25s ease, opacity .2s ease;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after  { position: absolute; top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after  { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { padding: clamp(70px, 9vw, 120px) 0 84px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero h1 { margin-top: 18px; }
.hero h1 .grad {
  background: linear-gradient(120deg, var(--violet-200), var(--cyan));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lead { margin-top: 6px; margin-bottom: 30px; font-size: 1.18rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 22px 34px; margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--border); }
.hero-meta .stat strong { display: block; font-family: var(--font-head); font-size: 1.5rem; color: #fff; }
.hero-meta .stat span { font-size: .9rem; color: var(--text-muted); }

/* Hero visual: scheda con nodi */
.hero-visual {
  position: relative; border-radius: var(--radius-lg);
  border: 1px solid var(--border-2);
  background:
    radial-gradient(120% 90% at 80% 0%, rgba(124,58,237,.18), transparent 55%),
    linear-gradient(180deg, var(--surface-2), var(--surface));
  padding: 26px; box-shadow: var(--shadow);
  overflow: hidden;
}
.hero-visual h4 { font-size: .82rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 18px; }
.node-row { display: flex; align-items: center; gap: 14px; padding: 14px; border-radius: 12px; background: rgba(255,255,255,.02); border: 1px solid var(--border); margin-bottom: 12px; }
.node-row:last-child { margin-bottom: 0; }
.node-ic { flex: 0 0 42px; width: 42px; height: 42px; border-radius: 10px; display: grid; place-items: center; color: var(--violet-200); background: rgba(124,58,237,.14); border: 1px solid var(--border-2); }
.node-ic svg { width: 22px; height: 22px; }
.node-row b { font-family: var(--font-head); font-size: .98rem; color: #fff; display:block; }
.node-row small { color: var(--text-muted); font-size: .85rem; }
.node-dot { margin-left: auto; width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }

/* ---------- Card servizi ---------- */
.grid { display: grid; gap: var(--gap); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative; background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
  overflow: hidden;
}
.card::before {
  content:""; position:absolute; inset:0 0 auto 0; height:2px;
  background: linear-gradient(90deg, var(--violet), var(--cyan)); opacity:0; transition: opacity .25s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--border-2); box-shadow: var(--shadow); }
.card:hover::before { opacity:1; }
.card .ic {
  width: 50px; height: 50px; border-radius: 12px; display: grid; place-items: center;
  color: var(--violet-200); background: rgba(124,58,237,.14); border: 1px solid var(--border-2);
  margin-bottom: 18px;
}
.card .ic svg { width: 26px; height: 26px; }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--text-muted); margin-bottom: 0; font-size: .98rem; }
.card .more { display:inline-flex; align-items:center; gap:6px; margin-top:16px; font-weight:600; font-size:.92rem; font-family:var(--font-head); color: var(--violet-400); }
.card .more svg { width:15px; height:15px; transition: transform .18s ease; }
.card:hover .more svg { transform: translateX(3px); }
.card .num { position:absolute; top:22px; right:24px; font-family:var(--font-head); font-size:.85rem; color: var(--text-dim); }

/* ---------- Servizio dettaglio ---------- */
.service-block { display: grid; grid-template-columns: 64px 1fr; gap: 26px; padding: 36px 0; border-top: 1px solid var(--border); scroll-margin-top: 90px; }
.service-block:first-of-type { border-top: none; }
.service-block .ic { width: 60px; height: 60px; border-radius: 14px; display:grid; place-items:center; color: var(--violet-200); background: rgba(124,58,237,.14); border:1px solid var(--border-2); }
.service-block .ic svg { width: 30px; height: 30px; }
.service-block h3 { font-size: 1.45rem; }
.service-block .tags { display:flex; flex-wrap:wrap; gap:8px; margin-top:14px; }
.tag { font-size:.82rem; color: var(--violet-200); background: rgba(124,58,237,.10); border:1px solid var(--border-2); padding:5px 12px; border-radius:999px; }
.checklist { list-style:none; padding:0; margin:14px 0 0; display:grid; gap:8px; }
.checklist li { position:relative; padding-left:28px; color: var(--text-muted); }
.checklist li::before { content:""; position:absolute; left:0; top:7px; width:16px; height:16px; border-radius:5px; background: rgba(34,211,238,.12); border:1px solid var(--cyan-dim); }
.checklist li::after { content:""; position:absolute; left:5px; top:10px; width:5px; height:8px; border:solid var(--cyan); border-width:0 2px 2px 0; transform: rotate(45deg); }

/* ---------- Feature "perché" ---------- */
.feature { display:flex; gap:16px; }
.feature .fic { flex:0 0 44px; width:44px; height:44px; border-radius:11px; display:grid; place-items:center; color: var(--cyan); background: rgba(34,211,238,.08); border:1px solid rgba(34,211,238,.18); }
.feature .fic svg { width:22px; height:22px; }
.feature h3 { font-size:1.08rem; margin-bottom:4px; }
.feature p { color: var(--text-muted); font-size:.95rem; margin:0; }

/* ---------- CTA band ---------- */
.cta-band { position: relative; border-radius: var(--radius-lg); padding: 56px; text-align:center; overflow:hidden;
  border:1px solid var(--border-2);
  background:
    radial-gradient(120% 130% at 50% 0%, rgba(124,58,237,.30), transparent 60%),
    linear-gradient(180deg, var(--surface-2), var(--surface));
}
.cta-band h2 { margin-bottom: 10px; }
.cta-band .lead { margin: 0 auto 26px; }
.cta-actions { display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }

/* ---------- Process steps ---------- */
.steps { counter-reset: step; display:grid; gap:var(--gap); }
.step { position:relative; padding-left: 64px; }
.step::before { counter-increment: step; content: counter(step); position:absolute; left:0; top:0;
  width:44px; height:44px; border-radius:12px; display:grid; place-items:center;
  font-family:var(--font-head); font-weight:700; color:#fff;
  background: linear-gradient(135deg, var(--violet), var(--violet-600)); }
.step h3 { font-size:1.1rem; margin-bottom:4px; }
.step p { color: var(--text-muted); margin:0; font-size:.96rem; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--bg-2); padding: 60px 0 28px; margin-top: 40px; }
.footer-grid { display:grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; }
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand p { color: var(--text-muted); font-size:.94rem; max-width: 34ch; }
.footer-col h4 { font-family: var(--font-head); font-size:.82rem; letter-spacing:.1em; text-transform:uppercase; color: var(--text-dim); margin-bottom: 16px; }
.footer-col ul { list-style:none; margin:0; padding:0; display:grid; gap:10px; }
.footer-col a { color: var(--text-muted); font-size:.95rem; }
.footer-col a:hover { color: var(--violet-200); }
.footer-contact li { color: var(--text-muted); font-size:.95rem; display:flex; gap:10px; margin-bottom:10px; }
.footer-contact svg { width:17px; height:17px; flex:0 0 17px; margin-top:3px; color: var(--violet-400); }
.footer-bottom { display:flex; flex-wrap:wrap; gap:10px 20px; justify-content:space-between; align-items:center;
  margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--border); color: var(--text-dim); font-size:.86rem; }
.footer-bottom a { color: var(--text-dim); }
.footer-bottom a:hover { color: var(--text-muted); }
.footer-legal { display:flex; gap:18px; flex-wrap:wrap; }

/* ---------- Page hero (pagine interne) ---------- */
.page-hero { padding: 64px 0 18px; }
.page-hero .eyebrow { margin-bottom: 18px; }
.page-hero p.lead { margin-top: 8px; }
.breadcrumb { font-size:.85rem; color: var(--text-dim); margin-bottom: 20px; }
.breadcrumb a { color: var(--text-muted); }

/* ---------- Form ---------- */
.form-wrap { display:grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items:start; }
.form-card { background: linear-gradient(180deg, var(--surface-2), var(--surface)); border:1px solid var(--border); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow); }
.field { margin-bottom: 18px; }
.field label { display:block; font-size:.9rem; font-weight:500; margin-bottom:7px; color: var(--text); }
.field .req { color: var(--violet-400); }
.field input, .field textarea, .field select {
  width:100%; font-family: inherit; font-size: 1rem; color: var(--text);
  background: rgba(255,255,255,.02); border:1px solid var(--border-2); border-radius: 10px;
  padding: 12px 14px; transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
  color-scheme: dark;
}
/* Lista a tendina nativa leggibile (testo chiaro su sfondo scuro) */
.field select option, .field select optgroup {
  background-color: #1C1430; color: #ECEAF4;
}
.field textarea { min-height: 140px; resize: vertical; }
.field input::placeholder, .field textarea::placeholder { color: var(--text-dim); }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--violet); background: rgba(124,58,237,.06);
  box-shadow: 0 0 0 3px rgba(124,58,237,.18);
}
.field.invalid input, .field.invalid textarea { border-color: var(--danger); }
.field .err { display:none; color: var(--danger); font-size:.82rem; margin-top:6px; }
.field.invalid .err { display:block; }
.check { display:flex; gap:11px; align-items:flex-start; font-size:.9rem; color: var(--text-muted); }
.check input { width:18px; height:18px; margin-top:3px; flex:0 0 18px; accent-color: var(--violet-600); }
.check a { text-decoration: underline; }
.form-note { font-size:.82rem; color: var(--text-dim); margin-top: 8px; }
.form-status { display:none; margin-top:18px; padding:14px 16px; border-radius:10px; font-size:.95rem; }
.form-status.ok { display:block; background: rgba(52,211,153,.10); border:1px solid rgba(52,211,153,.3); color: var(--ok); }
.form-status.error { display:block; background: rgba(248,113,113,.10); border:1px solid rgba(248,113,113,.3); color: var(--danger); }

.contact-aside .info-item { display:flex; gap:14px; padding:18px 0; border-bottom:1px solid var(--border); }
.contact-aside .info-item:last-child { border-bottom:none; }
.contact-aside .info-item .ic { flex:0 0 44px; width:44px; height:44px; border-radius:11px; display:grid; place-items:center; color: var(--violet-200); background: rgba(124,58,237,.14); border:1px solid var(--border-2); }
.contact-aside .info-item .ic svg { width:20px; height:20px; }
.contact-aside .info-item b { font-family: var(--font-head); font-size:.95rem; display:block; }
.contact-aside .info-item span, .contact-aside .info-item a { color: var(--text-muted); font-size:.94rem; }

/* ---------- Prose (pagine legali) ---------- */
.prose { max-width: 76ch; }
.prose h2 { font-size: 1.4rem; margin-top: 2.2em; }
.prose h3 { font-size: 1.12rem; margin-top: 1.6em; }
.prose p, .prose li { color: var(--text-muted); }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1rem; }
.prose li { margin-bottom: .5em; }
.prose strong { color: var(--text); }
.prose .updated { font-size:.88rem; color: var(--text-dim); margin-bottom: 2em; }
.prose table { width:100%; border-collapse: collapse; margin: 1em 0; font-size:.92rem; }
.prose th, .prose td { text-align:left; padding: 10px 12px; border:1px solid var(--border); }
.prose th { background: rgba(255,255,255,.03); color: var(--text); font-family: var(--font-head); font-weight:600; }
.prose td { color: var(--text-muted); }

/* ---------- Animazioni on-scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .form-wrap { grid-template-columns: 1fr; gap: 32px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 70px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: var(--bg-2); border-bottom: 1px solid var(--border);
    padding: 14px 22px 22px; box-shadow: var(--shadow);
    transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity .2s ease, transform .2s ease;
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 12px 14px; font-size: 1rem; }
  .nav-cta { margin: 8px 0 0; }
  .nav-cta .btn { width: 100%; justify-content: center; }
}
@media (max-width: 620px) {
  section { padding: 60px 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-band { padding: 38px 24px; }
  .service-block { grid-template-columns: 1fr; gap: 16px; }
  .form-card { padding: 24px; }
  .hero-meta { gap: 18px 26px; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none; }
}