/* XTrader Bridge Site — palette coerente col design handoff del bridge (§10) */
:root{
  --bg:#0e1117; --panel:#151a22; --panel2:#1a2029; --border:#232b38;
  --text:#e8ecf3; --muted:#93a0b4;
  --hdr:#1a1a2e; --cyan:#4fc3f7; --cyan-deep:#0d47a1;
  --green:#2e7d32; --green-txt:#66bb6a; --red:#c62828; --red-txt:#ef5350;
  --orange:#ffa726; --amber:#ffb74d; --violet:#4527a0;
  --mono:consolas,"Cascadia Mono","Courier New",monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--text);
  font-family:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.6;min-height:100vh;display:flex;flex-direction:column;
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}
a{color:var(--cyan)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--amber);outline-offset:2px}

/* nav */
.nav{background:var(--hdr);border-bottom:1px solid #262647}
.nav-in{max-width:1080px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.brand{color:var(--cyan);font-weight:700;font-size:1.1rem;text-decoration:none;display:flex;align-items:center;gap:8px}
.nav-links{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav-links a{
  color:#c3c9e8;text-decoration:none;font-size:.93rem;padding:6px 12px;border-radius:6px;
}
.nav-links a:hover{background:#232345;color:#fff}
.nav-links a[aria-current="page"]{background:#232345;color:var(--cyan);font-weight:600}

/* layout */
main{flex:1}
.wrap{max-width:1080px;margin:0 auto;padding:36px 20px}
.hero{padding:64px 20px 48px;text-align:left}
.hero-in{max-width:1080px;margin:0 auto;display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center}
@media (max-width:860px){.hero-in{grid-template-columns:1fr}}
.hero h1{font-size:clamp(1.7rem,4vw,2.5rem);line-height:1.2;text-wrap:balance}
.hero h1 em{color:var(--cyan);font-style:normal}
.hero p.lead{color:var(--muted);margin-top:14px;max-width:56ch;font-size:1.05rem}
.cta-row{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}
.btn{
  display:inline-block;border-radius:8px;padding:11px 22px;font-weight:650;font-size:.97rem;
  text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit;
}
.btn.primary{background:var(--cyan);color:#06121a}
.btn.primary:hover{background:#7ad2f9}
.btn.ghost{border-color:var(--border);color:var(--text);background:var(--panel)}
.btn.ghost:hover{border-color:var(--cyan)}

/* chain diagram */
.chain{
  background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:22px;
  font-family:var(--mono);font-size:.85rem;line-height:2.1;overflow-x:auto;white-space:nowrap;
}
.chain b{color:var(--cyan);font-weight:600}
.chain .ok{color:var(--green-txt)}
.chain .arr{color:#55627a}

/* cards */
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:20px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:20px}
.card h3{font-size:1.02rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.92rem}
.card .tag{
  display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;
  color:var(--amber);margin-bottom:10px;
}
h2.sec{font-size:1.3rem;margin:44px 0 6px;text-wrap:balance}
p.secsub{color:var(--muted);max-width:70ch}

/* safety strip */
.safety{border-left:3px solid var(--green);background:var(--panel);border-radius:8px;padding:14px 18px;margin-top:20px}
.safety b{color:var(--green-txt)}
.safety p{color:var(--muted);font-size:.92rem}

/* FAQ */
details.faq{
  background:var(--panel);border:1px solid var(--border);border-radius:10px;
  margin-bottom:10px;overflow:hidden;
}
details.faq summary{
  cursor:pointer;padding:14px 18px;font-weight:600;font-size:.98rem;list-style:none;
  display:flex;gap:10px;align-items:baseline;
}
details.faq summary::before{content:"▸";color:var(--amber);transition:transform .15s}
details.faq[open] summary::before{transform:rotate(90deg)}
details.faq .a{padding:0 18px 16px 38px;color:var(--muted);font-size:.94rem}
details.faq .a code{font-family:var(--mono);font-size:.85em;background:#0c0f14;border:1px solid var(--border);border-radius:4px;padding:1px 5px}

/* contatti */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:20px}
@media (max-width:760px){.contact-grid{grid-template-columns:1fr}}
.field{margin-bottom:14px}
.field label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:5px}
.field input,.field textarea{
  width:100%;background:#0c0f14;border:1px solid var(--border);border-radius:8px;
  color:var(--text);padding:10px 12px;font-size:.95rem;font-family:inherit;
}
.field textarea{min-height:130px;resize:vertical}

/* footer */
footer{border-top:1px solid var(--border);margin-top:60px}
footer .wrap{padding:22px 20px;color:var(--muted);font-size:.83rem;display:flex;gap:16px;flex-wrap:wrap;justify-content:space-between}

/* ============ CHAT WIDGET ============ */
#chat-fab{
  position:fixed;right:22px;bottom:22px;z-index:90;
  background:var(--cyan);color:#06121a;border:none;border-radius:999px;
  padding:13px 20px;font-weight:700;font-size:.95rem;cursor:pointer;font-family:inherit;
  box-shadow:0 10px 30px rgba(0,0,0,.5);
}
#chat-fab:hover{background:#7ad2f9}
#chat-panel{
  position:fixed;right:22px;bottom:84px;z-index:91;width:min(380px,calc(100vw - 32px));
  background:var(--panel);border:1px solid var(--border);border-radius:14px;overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.6);display:flex;flex-direction:column;max-height:min(560px,70vh);
}
#chat-head{background:var(--hdr);padding:12px 16px;display:flex;align-items:center;gap:10px}
#chat-head b{color:var(--cyan);font-size:.95rem}
#chat-head span{color:#9aa3c0;font-size:.75rem}
#chat-close{margin-left:auto;background:none;border:none;color:#9aa3c0;font-size:1.1rem;cursor:pointer}
#chat-msgs{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}
.cmsg{max-width:88%;padding:9px 13px;border-radius:12px;font-size:.9rem;line-height:1.5;white-space:pre-wrap;overflow-wrap:anywhere}
.cmsg.user{align-self:flex-end;background:var(--cyan-deep);color:#eaf4ff;border-bottom-right-radius:3px}
.cmsg.bot{align-self:flex-start;background:var(--panel2);border:1px solid var(--border);border-bottom-left-radius:3px}
.cmsg.bot.thinking{color:var(--muted);font-style:italic}
#chat-form{display:flex;gap:8px;padding:12px;border-top:1px solid var(--border)}
#chat-input{
  flex:1;background:#0c0f14;border:1px solid var(--border);border-radius:8px;
  color:var(--text);padding:9px 12px;font-size:.9rem;font-family:inherit;
}
#chat-send{background:var(--cyan);color:#06121a;border:none;border-radius:8px;padding:9px 14px;font-weight:700;cursor:pointer;font-family:inherit}
#chat-send:disabled{opacity:.5;cursor:not-allowed}
#chat-note{padding:0 14px 10px;color:var(--muted);font-size:.72rem}

/* lingua */
.lang-sw{display:flex;gap:2px;background:#232345;border-radius:8px;padding:3px;margin-left:8px}
.lang-sw button{
  background:none;border:none;color:#c3c9e8;font-size:.8rem;font-weight:650;
  padding:4px 10px;border-radius:6px;cursor:pointer;font-family:inherit;
}
.lang-sw button:hover{color:#fff}
.lang-sw button[aria-pressed="true"]{background:var(--cyan);color:#06121a}

/* rete Betting Toolkit */
.netgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px;margin-top:18px}
.netcard{
  background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px;
  display:flex;flex-direction:column;gap:4px;
}
.netcard .flag{font-size:1.5rem}
.netcard b{font-size:.95rem;letter-spacing:.02em}
.netcard .netsub{color:var(--muted);font-size:.83rem}