/* Graba Music — CHATBOT FAQ widget (statico, senza backend).
   Incluso su tutte le 6 pagine del sito (index/studio/4 etichette) insieme a js/chatbot.js.
   Accento: TEAL di firma Graba di default (self-contained, valori letterali — non dipende
   da variabili --teal/--accent del CSS host, che non sono garantite su ogni pagina: index.html
   ad es. non definisce mai --accent). Sulla pagina Studio (rosso "recording/on-air") il bottone
   eredita il rosso via l'attributo <body data-chatbot-accent="red">, l'unico hook cross-file
   usato per evitare qualunque dipendenza dall'ordine di caricamento dei CSS host. */
:root{
  --cb-black:#000000;
  --cb-panel:#101414;
  --cb-line:rgba(255,255,255,.12);
  --cb-white:#F8F8F8;
  --cb-grey:#9aa3a3;
  --cb-accent:#00B8A8;
  --cb-accent-2:#5be8db;
  --cb-accent-dim:rgba(0,184,168,.18);
}
body[data-chatbot-accent="red"]{
  --cb-accent:#E4483B;
  --cb-accent-2:#f0796c;
  --cb-accent-dim:rgba(228,72,59,.18);
}

#cbRoot{font-family:'Montserrat',system-ui,sans-serif}
#cbRoot *{box-sizing:border-box}

/* ===== BOTTONE FLOTTANTE ===== */
.cb-btn{
  position:fixed;right:24px;bottom:24px;z-index:300;
  width:58px;height:58px;border-radius:50%;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  background:var(--cb-accent);color:var(--cb-black);
  box-shadow:0 10px 30px rgba(0,0,0,.45),0 0 0 0 var(--cb-accent-dim);
  transition:transform .25s cubic-bezier(.2,.8,.2,1),box-shadow .25s ease;
}
.cb-btn:hover{transform:translateY(-3px) scale(1.04);box-shadow:0 14px 36px rgba(0,0,0,.5),0 0 0 8px var(--cb-accent-dim)}
.cb-btn:focus-visible{outline:2px solid var(--cb-white);outline-offset:3px}
.cb-btn svg{width:26px;height:26px;transition:opacity .18s ease,transform .18s ease}
.cb-btn .cb-btn-icon-close{position:absolute;opacity:0;transform:scale(.7) rotate(-45deg)}
.cb-btn.is-open .cb-btn-icon-chat{opacity:0;transform:scale(.7) rotate(45deg)}
.cb-btn.is-open .cb-btn-icon-close{opacity:1;transform:scale(1) rotate(0)}
/* piccolo badge pulse per farsi notare la prima volta, si ferma da solo dopo poche battute */
.cb-btn::after{
  content:"";position:absolute;inset:-4px;border-radius:50%;border:2px solid var(--cb-accent);
  opacity:.55;animation:cbPulse 2.4s ease-out 3;
}
@keyframes cbPulse{0%{transform:scale(.9);opacity:.6}100%{transform:scale(1.35);opacity:0}}

/* ===== PANNELLO ===== */
.cb-panel{
  position:fixed;right:24px;bottom:94px;z-index:300;
  width:min(360px,calc(100vw - 32px));max-height:min(560px,calc(100vh - 140px));
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--cb-panel);border:1px solid var(--cb-line);border-radius:18px;
  box-shadow:0 26px 60px rgba(0,0,0,.55),0 0 0 1px rgba(255,255,255,.03);
  opacity:0;visibility:hidden;transform:translateY(14px) scale(.98);
  transition:opacity .22s ease,transform .22s cubic-bezier(.2,.8,.2,1),visibility 0s linear .22s;
}
.cb-panel.is-open{opacity:1;visibility:visible;transform:translateY(0) scale(1);transition:opacity .22s ease,transform .22s cubic-bezier(.2,.8,.2,1)}

.cb-head{
  flex:none;display:flex;align-items:flex-start;justify-content:space-between;gap:10px;
  padding:20px 20px 16px;border-bottom:1px solid var(--cb-line);
  background:radial-gradient(ellipse 120% 100% at 0% 0%,var(--cb-accent-dim),transparent 65%);
}
.cb-head-title{margin:0;font-size:1rem;font-weight:900;color:var(--cb-white);letter-spacing:-.01em}
.cb-head-sub{margin:5px 0 0;font-size:.78rem;color:var(--cb-grey);line-height:1.4}
.cb-close{
  flex:none;width:30px;height:30px;border-radius:50%;border:1px solid var(--cb-line);background:rgba(255,255,255,.04);
  color:var(--cb-white);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:border-color .2s ease,color .2s ease;
}
.cb-close:hover,.cb-close:focus-visible{border-color:var(--cb-accent);color:var(--cb-accent)}
.cb-close svg{width:14px;height:14px}

.cb-body{flex:1;overflow-y:auto;padding:16px 18px 18px}
.cb-body::-webkit-scrollbar{width:7px}
.cb-body::-webkit-scrollbar-thumb{background:var(--cb-line);border-radius:99px}

.cb-greet{margin:0 0 16px;font-size:.86rem;color:var(--cb-white);opacity:.92;line-height:1.55}

.cb-faq{display:flex;flex-direction:column;gap:8px;margin:0 0 6px}
.cb-q{
  display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;text-align:left;
  padding:12px 14px;border-radius:11px;border:1px solid var(--cb-line);background:rgba(255,255,255,.03);
  color:var(--cb-white);font-family:inherit;font-size:.82rem;font-weight:700;line-height:1.35;cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.cb-q:hover,.cb-q:focus-visible{border-color:var(--cb-accent-dim);background:rgba(255,255,255,.06)}
.cb-q-arrow{flex:none;width:9px;height:9px;border-right:2px solid var(--cb-accent);border-bottom:2px solid var(--cb-accent);transform:rotate(-45deg);transition:transform .22s ease}
.cb-q[aria-expanded="true"] .cb-q-arrow{transform:rotate(45deg)}
.cb-a{
  max-height:0;overflow:hidden;transition:max-height .28s ease;
  font-size:.8rem;color:var(--cb-grey);line-height:1.55;
}
.cb-a-inner{padding:11px 14px 2px}
.cb-a a{color:var(--cb-accent);text-decoration:underline;text-underline-offset:2px}
.cb-q[aria-expanded="true"] + .cb-a{max-height:220px}

.cb-foot{flex:none;padding:14px 18px 18px;border-top:1px solid var(--cb-line)}
.cb-tg{
  display:flex;align-items:center;justify-content:center;gap:9px;width:100%;
  padding:13px 16px;border-radius:99px;border:0;cursor:pointer;
  background:var(--cb-accent);color:var(--cb-black);font-family:inherit;
  font-size:.8rem;font-weight:800;letter-spacing:.02em;transition:transform .2s ease,box-shadow .2s ease;
}
.cb-tg:hover{transform:translateY(-2px);box-shadow:0 10px 24px var(--cb-accent-dim)}
.cb-tg svg{width:17px;height:17px;flex:none}

/* Toggle lingua interno (usato solo se la pagina non ha gia' un .lang-toggle globale nell'header
   — sulle 6 pagine del sito il .lang-toggle globale c'e' sempre, quindi questo blocco resta
   di riserva/nascosto: il widget segue la lingua attiva del sito, vedi js/chatbot.js). */
.cb-langhint{margin:10px 0 0;text-align:center;font-size:.68rem;color:var(--cb-grey);opacity:.7}

@media (max-width:480px){
  .cb-btn{right:16px;bottom:16px;width:54px;height:54px}
  .cb-panel{right:16px;left:16px;width:auto;bottom:82px;max-height:min(72vh,560px)}
}
