/* =============================================================================
 *  Design system Claudio Marchesini · v2
 *  Palette chiara su sfondo off-white, navbar/footer blu scuro, accent #3b6dd6.
 * ========================================================================== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg-0:#fafbff;
  --bg-1:#ffffff;
  --bg-2:#f3f6fd;
  --line:#e3e7ee;
  --text:#0b1220;
  --text-dim:#5b6577;
  --accent:#3b6dd6;
  --accent-2:#7c5cf6;
  --accent-glow:rgba(59,109,214,.22);
  --good:#0f8a5f;
  --warn:#b25c00;
  --dark:#0b162e;
  --dark-2:#081226;
  --radius:14px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.06);
  --shadow-md:0 6px 18px -6px rgba(15,23,42,.12);
  --shadow-lg:0 24px 50px -18px rgba(15,23,42,.18);
  --max:1200px;
}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg-0);color:var(--text);line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
section{padding:90px 0;position:relative}
.container{max-width:var(--max);margin:0 auto;padding:0 24px}
h1,h2,h3,h4{letter-spacing:-.02em;line-height:1.2;font-weight:700}
h2{font-size:clamp(28px,3.4vw,42px);margin-bottom:14px}
h3{font-size:22px;margin-bottom:10px}
h4{font-size:17px;margin-bottom:8px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;border:1px solid rgba(59,109,214,.25);border-radius:99px;
  background:rgba(59,109,214,.06);color:var(--accent);
  font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  margin-bottom:18px;
}
.eyebrow svg{width:14px;height:14px}
.lead{color:var(--text-dim);font-size:18px;max-width:720px}
.section-header{margin-bottom:50px;text-align:center}
.section-header h2{background:linear-gradient(180deg,#0b1220,#3a4459);-webkit-background-clip:text;background-clip:text;color:transparent}

/* -------- Navbar (sfondo blu scuro) -------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(11,22,46,.88);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.06);transition:.25s;
}
.nav.scrolled{background:rgba(8,17,38,.96);box-shadow:0 4px 14px rgba(8,17,38,.35)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:82px;max-width:var(--max);margin:0 auto;padding:0 24px}
.nav-logo{display:flex;align-items:center;gap:12px;font-weight:700;font-size:16px;color:#fff}
.nav-logo img{height:48px;width:auto}
.nav-links{display:flex;gap:34px;list-style:none;align-items:center}
.nav-links a{
  color:rgba(255,255,255,.92);font-size:15px;font-weight:600;transition:.2s;
  position:relative;padding:8px 2px;
}
.nav-links a::after{
  content:'';position:absolute;left:0;bottom:0;
  width:0;height:2px;background:#86b1ff;transition:.25s;
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{width:100%}
.nav-links a.btn-pill::after{display:none}
.nav-links a.nav-cta{padding:9px 24px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:10px;font-size:14px;font-weight:600;
  transition:.2s;cursor:pointer;border:none;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;box-shadow:0 8px 24px -8px var(--accent-glow);
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 12px 30px -8px var(--accent-glow)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn-ghost:hover{background:rgba(255,255,255,.03);border-color:var(--accent)}
.btn-pill{
  background:rgba(134,177,255,.14);color:#cfddff;
  border:1px solid rgba(134,177,255,.45);
  padding:9px 16px;font-size:14px;font-weight:600;
}
.btn-pill:hover{background:#86b1ff;border-color:#86b1ff;color:#0b162e}
.nav-burger{display:none;background:none;border:none;color:#fff;cursor:pointer;padding:8px}

/* -------- Hero -------- */
.hero{padding:180px 0 100px;position:relative;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero-bg::before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(60% 50% at 20% 30%, rgba(59,109,214,.13), transparent 70%),
    radial-gradient(40% 40% at 80% 70%, rgba(124,92,246,.12), transparent 70%);
}
.hero-bg::after{
  content:'';position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(59,109,214,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(59,109,214,.07) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse at center, black 30%, transparent 75%);
}
.hero-content{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.hero h1{
  font-size:clamp(36px,5.4vw,62px);line-height:1.05;
  background:linear-gradient(180deg,#0b1220 30%,#3a4459 130%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin:14px 0 22px;
}
.hero h1 .accent{background:linear-gradient(135deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--text-dim);font-size:18px;max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-card{
  position:relative;border:1px solid var(--line);border-radius:20px;
  background:#fff;padding:30px;box-shadow:var(--shadow-lg);
  display:flex;flex-direction:column;gap:18px;
}
.hero-card .badge{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border-radius:6px;background:rgba(15,138,95,.1);color:var(--good);font-size:12px;font-weight:600;width:fit-content}
.hero-card .badge::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--good);box-shadow:0 0 8px var(--good)}
.kv{display:flex;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}
.kv:last-child{border-bottom:0}
.kv .k{color:var(--text-dim)}
.kv .v{color:var(--text);font-weight:600}
.hero-card .qr{display:flex;align-items:center;gap:14px;padding:16px;border-radius:12px;background:rgba(59,109,214,.07);border:1px solid rgba(59,109,214,.18)}
.hero-card .qr svg{flex-shrink:0;color:var(--accent)}
.hero-card .qr p{color:var(--text);font-size:13px;margin:0}
.hero-card .qr p span{color:var(--text-dim)}

/* -------- Cards generiche -------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  position:relative;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;transition:.25s;overflow:hidden;box-shadow:var(--shadow-sm);
}
.card::after{
  content:'';position:absolute;inset:0;border-radius:var(--radius);
  background:radial-gradient(400px circle at var(--mx,50%) var(--my,0%),rgba(59,109,214,.08),transparent 40%);
  opacity:0;transition:.3s;pointer-events:none;
}
.card:hover::after{opacity:1}
.card:hover{transform:translateY(-3px);border-color:rgba(59,109,214,.45);box-shadow:var(--shadow-md);background:var(--bg-2)}
.card .icon{
  width:42px;height:42px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(59,109,214,.14),rgba(124,92,246,.14));
  border:1px solid rgba(59,109,214,.28);color:var(--accent);margin-bottom:18px;
}
.card .icon svg{width:22px;height:22px}
.card p{color:var(--text-dim);font-size:15px}

/* -------- About -------- */
.about-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px;align-items:center}
.about-photo{position:relative;display:flex;justify-content:center}
.about-photo::before{
  content:'';position:absolute;width:70%;aspect-ratio:1;top:50%;left:50%;
  transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(59,109,214,.18),transparent 65%);
  filter:blur(40px);z-index:0;
}
.about-photo img{
  position:relative;z-index:1;width:240px;height:auto;max-width:100%;
  filter:drop-shadow(0 18px 36px rgba(15,23,42,.2));
}
.about ul{list-style:none;display:flex;flex-direction:column;gap:14px;margin-top:24px}
.about li{display:flex;gap:14px;align-items:flex-start;color:var(--text-dim);font-size:15px}
.about li svg{flex-shrink:0;color:var(--accent);margin-top:3px}
.about li b{color:var(--text)}

/* -------- CVE list -------- */
.cve-card{
  display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:18px 22px;background:var(--bg-1);border:1px solid var(--line);
  border-radius:12px;transition:.2s;box-shadow:var(--shadow-sm);
}
.cve-card:hover{border-color:var(--accent);background:var(--bg-2);box-shadow:var(--shadow-md)}
.cve-card .id{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700;font-size:14px;color:var(--accent);min-width:160px}
.cve-card .desc{color:var(--text-dim);font-size:14px;flex:1}
.cve-card .arrow{color:var(--text-dim);transition:.2s}
.cve-card:hover .arrow{color:var(--accent);transform:translateX(4px)}
.cve-grid{display:flex;flex-direction:column;gap:12px}
/* Badge CVSS: punteggio + label gravita', colore proporzionale al rischio */
.cvss{
  display:inline-flex;align-items:stretch;border-radius:7px;overflow:hidden;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;font-weight:700;
  line-height:1;flex-shrink:0;border:1px solid;letter-spacing:.02em;
}
.cvss .cvss-score{padding:6px 9px;background:#fff;color:var(--text)}
.cvss .cvss-sev{padding:6px 9px;color:#fff;text-transform:uppercase;letter-spacing:.06em;font-size:11px}
.cvss-low{border-color:#3b8a4a}
.cvss-low .cvss-sev{background:#3b8a4a}
.cvss-low .cvss-score{color:#1d4d27}
.cvss-medium{border-color:#c47b00}
.cvss-medium .cvss-sev{background:#c47b00}
.cvss-medium .cvss-score{color:#7a4d00}
.cvss-high{border-color:#c92a2a}
.cvss-high .cvss-sev{background:#c92a2a}
.cvss-high .cvss-score{color:#7d1414}
.cvss-critical{border-color:#7a0e0e}
.cvss-critical .cvss-sev{background:#7a0e0e}
.cvss-critical .cvss-score{color:#4d0808}

/* -------- Contatti -------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-info{
  display:flex;flex-direction:column;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-md);
  overflow:hidden;
}
.contact-row{
  display:flex;gap:16px;align-items:center;
  padding:18px 22px;
  border-bottom:1px solid var(--line);
  background:transparent;
  transition:.2s;
}
.contact-row:last-child{border-bottom:0}
.contact-row:hover{background:var(--bg-2)}
.contact-row .icon{width:44px;height:44px;border-radius:10px;background:rgba(59,109,214,.1);display:grid;place-items:center;color:var(--accent);flex-shrink:0}
.contact-row .k{font-size:11px;color:var(--text-dim);text-transform:uppercase;letter-spacing:.1em;font-weight:600;margin-bottom:3px;display:block}
.contact-row .v,.contact-row a.v{font-size:16px;color:var(--text);font-weight:600;text-decoration:none;line-height:1.4;display:block}
.contact-row a.v:hover{color:var(--accent)}
.form{background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius);padding:32px;display:flex;flex-direction:column;gap:18px;box-shadow:var(--shadow-md)}
.form-field label{font-size:14px;color:var(--text);font-weight:600;margin-bottom:8px;display:block}
.form input,.form textarea{
  width:100%;background:var(--bg-0);border:1px solid var(--line);border-radius:10px;
  padding:14px 16px;color:var(--text);font-size:15px;font-family:inherit;transition:.15s;
}
.form input::placeholder,.form textarea::placeholder{color:var(--text-dim);opacity:.7}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow);background:var(--bg-1)}
.form textarea{resize:vertical;min-height:130px}
.btn-submit{
  width:100%;justify-content:center;padding:15px 20px;margin-top:6px;font-size:15px;
  background:var(--accent);color:#fff;border:1px solid var(--accent);
  border-radius:10px;transition:.2s;box-shadow:0 8px 20px -8px var(--accent-glow);
}
.btn-submit:hover{background:#2f57b3;border-color:#2f57b3;transform:translateY(-1px);box-shadow:0 12px 24px -8px var(--accent-glow)}
.btn-submit:focus{outline:none;box-shadow:0 0 0 3px var(--accent-glow)}
.btn-submit svg{transition:transform .2s}
.btn-submit:hover svg{transform:translateX(3px)}

/* -------- Footer (sfondo scuro) -------- */
footer{padding:60px 0 30px;background:var(--dark-2);color:#cfd6e6}
footer .footer-grid{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;margin-bottom:36px}
footer p{color:rgba(255,255,255,.7);font-size:13px;line-height:1.7}
footer .head{color:#fff;font-weight:600;font-size:14px;margin-bottom:10px;text-transform:uppercase;letter-spacing:.08em}
footer a{color:rgba(255,255,255,.7);transition:.2s}
footer a:hover{color:#86b1ff}
footer .copy{padding-top:24px;border-top:1px solid rgba(255,255,255,.1);text-align:center}
footer .copy p{color:rgba(255,255,255,.55);font-size:12px}

/* -------- Blog teaser -------- */
.blog-card{
  position:relative;background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;display:flex;flex-direction:column;gap:12px;transition:.2s;cursor:pointer;height:100%;box-shadow:var(--shadow-sm);
}
.blog-card:hover{border-color:var(--accent);background:var(--bg-2);transform:translateY(-3px);box-shadow:var(--shadow-md)}
.blog-card h4{color:var(--text)}
.blog-card .meta{color:var(--text-dim);font-size:13px}
.blog-card .link{margin-top:auto;color:var(--accent);font-size:13px;font-weight:600;display:flex;align-items:center;gap:6px}

/* -------- Blog single article -------- */
.article-hero{padding:160px 0 50px;background:linear-gradient(180deg,var(--bg-2),var(--bg-0));border-bottom:1px solid var(--line)}
.article-hero h1{
  font-size:clamp(28px,4.2vw,46px);line-height:1.15;
  background:linear-gradient(180deg,#0b1220 30%,#3a4459 130%);
  -webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:16px;
}
.article-hero .meta{color:var(--text-dim);font-size:14px;display:flex;gap:12px;align-items:center}
.article-hero .meta a{color:var(--accent);font-weight:600}
.article-body{padding:60px 0;max-width:780px;margin:0 auto}
.article-body h2{font-size:28px;margin:40px 0 16px;color:var(--text)}
.article-body h3{font-size:22px;margin:32px 0 12px;color:var(--text)}
.article-body p{margin-bottom:18px;color:var(--text);font-size:17px;line-height:1.75}
.article-body ul,.article-body ol{margin:0 0 22px 22px;color:var(--text);font-size:17px;line-height:1.75}
.article-body li{margin-bottom:8px}
.article-body strong{color:var(--text);font-weight:700}
.article-body a{color:var(--accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
/* Reset stile bottoni dentro l'articolo (vincono per specificita' su .article-body a) */
.article-body .btn{text-decoration:none}
.article-body .btn-primary{color:#fff;text-decoration:none}
.article-body .btn-ghost{color:var(--text);text-decoration:none}
.article-body img{margin:24px auto;border-radius:12px;box-shadow:var(--shadow-md)}
.article-body blockquote{border-left:3px solid var(--accent);padding:8px 18px;margin:20px 0;color:var(--text-dim);font-style:italic;background:var(--bg-2);border-radius:0 8px 8px 0}
.article-body table{
  border-collapse:collapse;width:100%;margin:24px 0;font-size:15px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:8px;overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.article-body table th,.article-body table td{
  border:1px solid var(--line);padding:12px 16px;text-align:left;vertical-align:top;
}
.article-body table th{
  background:var(--bg-2);color:var(--text);font-weight:600;
  border-bottom:2px solid var(--line);
}
.article-body table tr:nth-child(even) td{background:rgba(243,246,253,.5)}
.article-body table tr:hover td{background:rgba(59,109,214,.04)}
/* Mobile: tabelle scrollabili in orizzontale */
@media (max-width:700px){
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}
.article-cta{margin-top:50px;padding:30px;border-radius:var(--radius);background:linear-gradient(135deg,rgba(59,109,214,.08),rgba(124,92,246,.06));border:1px solid rgba(59,109,214,.2)}
.article-cta h3{color:var(--text);margin-bottom:10px}
.article-cta p{color:var(--text-dim);margin-bottom:14px}

/* -------- Blog index (lista articoli) -------- */
.blog-list{padding:140px 0 80px}
.blog-list .section-header{margin-bottom:40px}
.blog-grid-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}

/* -------- Responsive -------- */
@media (max-width:900px){
  .nav-links{display:none}
  .nav-burger{display:inline-flex}
  .nav-burger.open + .nav-links{display:flex;flex-direction:column;position:absolute;top:82px;left:0;right:0;background:rgba(8,17,38,.98);padding:20px 24px;border-bottom:1px solid rgba(255,255,255,.08);align-items:flex-start}
  .hero-content,.about-grid,.contact-grid{grid-template-columns:1fr}
  .grid-3,.grid-2,.blog-grid-list{grid-template-columns:1fr}
  section{padding:60px 0}
  .hero{padding:130px 0 60px}
  .cve-card{flex-direction:column;align-items:flex-start;gap:10px}
  .cve-card .id{min-width:0}
  .article-hero{padding:120px 0 40px}
  .article-body{padding:40px 0}
  .article-body p,.article-body ul,.article-body ol{font-size:16px}
}