/* ======================================================
   demo05/assets/app.css - DF Talkie
   Palette allineata a davidefulgione.com. L'elemento che
   regge tutta la pagina e' il quadrante: e' insieme tasto
   di trasmissione, indicatore di livello e altoparlante.
====================================================== */

:root{
  --bg:#07050e;
  --bg-2:#0d0a18;
  --card:rgba(255,255,255,.035);
  --card-2:rgba(255,255,255,.06);
  --line:rgba(208,24,171,.18);
  --line-2:rgba(255,255,255,.08);
  --ink:#e8e4f0;
  --muted:#9080b8;
  --dim:#5c4f78;
  --acc:#d018ab;
  --acc-2:#8c0f70;
  --acc-3:#e066cc;
  --rx:#22c98a;
  --rx-2:#7ef0c2;
  --warn:#f0a930;
  --err:#f0506e;
  --r:14px;
  --safe-b:env(safe-area-inset-bottom,0px);
  --safe-t:env(safe-area-inset-top,0px);
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:15px;-webkit-text-size-adjust:100%}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.6;
  min-height:100vh;min-height:100dvh;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  overscroll-behavior-y:none;
}
button{font:inherit;color:inherit;border:none;background:none;cursor:pointer}
a{color:inherit;text-decoration:none}
ul{list-style:none}
input{font:inherit;color:inherit}
::selection{background:var(--acc);color:#fff}
::-webkit-scrollbar{width:4px;height:4px}
::-webkit-scrollbar-thumb{background:var(--acc);border-radius:2px}
:focus-visible{outline:2px solid var(--acc-3);outline-offset:3px;border-radius:6px}

/* Sfondo fotografico. Niente background-attachment:fixed: su iOS
   sfarfalla e sgrana. Un livello fisso a parte fa la stessa cosa
   e si comporta bene ovunque. */
.bg{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:var(--bg) url('../sfondo.jpg') center center / cover no-repeat;
}
.bg::after{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(120% 80% at 50% 0%,rgba(208,24,171,.16) 0%,transparent 55%),
    linear-gradient(180deg,rgba(7,5,14,.72) 0%,rgba(7,5,14,.88) 42%,rgba(7,5,14,.96) 100%);
}
@media (min-width:900px){
  .bg{background-position:center 22%}
  .bg::after{background:
    radial-gradient(100% 70% at 50% 0%,rgba(208,24,171,.15) 0%,transparent 55%),
    linear-gradient(180deg,rgba(7,5,14,.70) 0%,rgba(7,5,14,.87) 45%,rgba(7,5,14,.955) 100%)}
}

/* Sfondo decorativo, solo dove non pesa */
.orb{position:fixed;border-radius:50%;pointer-events:none;z-index:0;opacity:0}
@media (min-width:900px){
  .orb{filter:blur(120px);opacity:.13}
  .orb-1{width:560px;height:560px;background:radial-gradient(circle,var(--acc) 0%,transparent 70%);top:-220px;left:-180px}
  .orb-2{width:420px;height:420px;background:radial-gradient(circle,var(--acc-2) 0%,transparent 70%);bottom:-160px;right:-140px}
}

/* -- Struttura --------------------------------------- */
.wrap{
  position:relative;z-index:1;
  max-width:560px;margin:0 auto;
  padding:calc(.9rem + var(--safe-t)) 1.1rem calc(1.4rem + var(--safe-b));
  min-height:100vh;min-height:100dvh;
  display:flex;flex-direction:column;
}
@media (min-width:900px){ .wrap{max-width:1000px;padding-top:2rem} }

.top{display:flex;align-items:center;gap:.7rem;margin-bottom:1.2rem}
.mark{
  position:relative;overflow:hidden;
  width:42px;height:42px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(140deg,var(--acc),var(--acc-2));
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:.95rem;
  box-shadow:0 0 20px rgba(208,24,171,.32),inset 0 0 0 1px rgba(255,255,255,.14);
  transition:transform .2s,box-shadow .2s;
}
.mark:hover{transform:translateY(-1px);box-shadow:0 0 26px rgba(208,24,171,.5),inset 0 0 0 1px rgba(255,255,255,.22)}
.mark img{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;border-radius:inherit;
}
.mark span{position:relative;z-index:0}
.top-copy{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.top-name{font-size:1rem;font-weight:600;letter-spacing:-.01em}
.top-role{font-size:.57rem;font-weight:500;color:var(--acc-3);letter-spacing:.11em;text-transform:uppercase}
.top-back{margin-left:auto;font-size:.75rem;color:var(--muted);padding:.4rem .7rem;border-radius:8px;border:1px solid var(--line-2)}
.top-back:hover{color:var(--ink);border-color:var(--line)}

.stage{flex:1;display:flex;flex-direction:column;justify-content:center}
@media (min-width:900px) and (min-height:760px){ .stage{justify-content:flex-start} }
.screen{display:none;animation:fade .3s ease}
.screen.on{display:block}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

.card{
  background:rgba(13,10,24,.66);border:1px solid var(--line-2);
  border-radius:var(--r);padding:1.25rem;
  -webkit-backdrop-filter:blur(14px) saturate(1.15);
  backdrop-filter:blur(14px) saturate(1.15);
}
.card + .card{margin-top:.85rem}

h1{font-size:1.4rem;font-weight:600;letter-spacing:-.02em;line-height:1.25;margin-bottom:.4rem}
h2{font-size:.98rem;font-weight:600;letter-spacing:-.01em;margin-bottom:.5rem}
.lead{color:var(--muted);font-size:.88rem}
.tiny{font-size:.74rem;color:var(--muted);line-height:1.55}
.eyebrow{
  font-family:var(--mono);font-size:.6rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--acc-3);display:block;margin-bottom:.5rem;
}

/* -- Bottoni ----------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  width:100%;padding:.95rem 1.2rem;border-radius:12px;
  font-size:.92rem;font-weight:600;letter-spacing:.01em;
  background:linear-gradient(135deg,var(--acc),var(--acc-2));color:#fff;
  box-shadow:0 4px 20px rgba(208,24,171,.3);
  transition:transform .18s,filter .18s,opacity .18s;
  -webkit-tap-highlight-color:transparent;
}
.btn:active{transform:scale(.985)}
.btn:hover{filter:brightness(1.08)}
.btn[disabled]{opacity:.45;pointer-events:none;box-shadow:none}
.btn-2{background:var(--card-2);border:1px solid var(--line-2);box-shadow:none;color:var(--ink);font-weight:500}
.btn-2:hover{border-color:var(--line);background:rgba(208,24,171,.08)}
/* Bottone principale: vetro lucido sopra il magenta, con un riflesso
   che attraversa la superficie ogni tanto. Un solo elemento della
   pagina si permette questo, ed e' quello che va premuto per primo. */
.btn-hero{
  position:relative;overflow:hidden;isolation:isolate;
  padding:1.05rem 1.3rem;border-radius:14px;font-size:.95rem;font-weight:600;
  background:linear-gradient(176deg,#e93cc0 0%,var(--acc) 42%,var(--acc-2) 100%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.45),
    inset 0 0 0 1px rgba(255,255,255,.10),
    inset 0 -8px 16px rgba(70,0,52,.30),
    0 1px 3px rgba(0,0,0,.4),
    0 8px 26px rgba(208,24,171,.36);
  text-shadow:0 1px 2px rgba(70,0,52,.4);
}
/* riflesso superiore: una lastra di vetro appoggiata sopra, non una
   caramella. Il bordo inferiore resta dritto e la luce si spegne presto. */
.btn-hero::before{
  content:'';position:absolute;left:1px;right:1px;top:1px;height:46%;z-index:-1;
  border-radius:13px 13px 6px 6px;
  background:linear-gradient(180deg,rgba(255,255,255,.30) 0%,rgba(255,255,255,.10) 55%,rgba(255,255,255,0) 100%);
  pointer-events:none;
}
/* lampo che scorre */
.btn-hero::after{
  content:'';position:absolute;top:-60%;bottom:-60%;width:34%;z-index:-1;
  left:-45%;transform:skewX(-18deg);pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.42),transparent);
  animation:sheen 4.6s cubic-bezier(.5,0,.3,1) infinite;
}
@keyframes sheen{
  0%,68%{left:-45%}
  92%,100%{left:125%}
}
.btn-hero:hover{
  filter:none;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.55),
    inset 0 0 0 1px rgba(255,255,255,.16),
    inset 0 -8px 16px rgba(70,0,52,.26),
    0 1px 3px rgba(0,0,0,.4),
    0 12px 34px rgba(208,24,171,.5);
}
.btn-hero:active{transform:scale(.99) translateY(1px)}
.btn-hero[disabled]::after{animation:none}
@media (prefers-reduced-motion:reduce){ .btn-hero::after{animation:none;opacity:0} }

.btn-row{display:flex;gap:.6rem;margin-top:.85rem}
.btn-sm{padding:.6rem .9rem;font-size:.82rem;border-radius:10px;width:auto}

/* -- Campo nome -------------------------------------- */
.field{margin-top:.9rem}
.field label{display:block;font-size:.72rem;color:var(--muted);margin-bottom:.35rem;letter-spacing:.02em}
.field input{
  width:100%;padding:.8rem .9rem;border-radius:11px;
  background:rgba(0,0,0,.3);border:1px solid var(--line-2);
  font-size:.95rem;transition:border-color .18s;
}
.field input:focus{outline:none;border-color:var(--acc)}
.field input::placeholder{color:var(--dim)}

/* ======================================================
   IL QUADRANTE - elemento centrale
====================================================== */
.dial-zone{
  display:flex;flex-direction:column;align-items:center;
  padding:.4rem 0 .2rem;
}
.dial{
  position:relative;
  width:min(74vw,286px);aspect-ratio:1;
  display:flex;align-items:center;justify-content:center;
  -webkit-tap-highlight-color:transparent;
  touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;
}
@media (min-width:900px){ .dial{width:322px} }
@media (max-height:680px){ .dial{width:min(60vw,228px)} }

/* Anelli di emissione: solo mentre si trasmette */
.dial-ripple{
  position:absolute;inset:0;border-radius:50%;
  border:1.5px solid var(--acc);opacity:0;pointer-events:none;
}
.dial.tx .dial-ripple{animation:ripple 2.1s cubic-bezier(.2,.6,.4,1) infinite}
.dial.tx .dial-ripple:nth-child(2){animation-delay:.7s}
.dial.tx .dial-ripple:nth-child(3){animation-delay:1.4s}
@keyframes ripple{
  0%{transform:scale(.86);opacity:.5}
  100%{transform:scale(1.32);opacity:0}
}

/* Corona di tacche: livello audio */
.dial-vu{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg);pointer-events:none}
.vu-track{fill:none;stroke:rgba(255,255,255,.11);stroke-width:7}
.vu-fill{
  fill:none;stroke:var(--acc);stroke-width:7;
  stroke-dasharray:0 100;
  transition:stroke-dasharray .07s linear;
}
.dial.rx .vu-fill{stroke:var(--rx)}
.dial.tx .vu-fill{filter:drop-shadow(0 0 6px rgba(208,24,171,.75))}
.dial.rx .vu-fill{filter:drop-shadow(0 0 6px rgba(34,201,138,.65))}

/* Pastiglia centrale */
.dial-btn{
  position:relative;z-index:2;
  width:78.5%;height:78.5%;border-radius:50%;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.15rem;
  background:
    radial-gradient(circle at 50% 22%,rgba(255,255,255,.09),transparent 58%),
    linear-gradient(160deg,#1a1226,#100b1c);
  border:1px solid var(--line);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.07),
    inset 0 -14px 30px rgba(0,0,0,.5),
    0 14px 40px rgba(0,0,0,.55);
  transition:transform .12s ease,box-shadow .2s ease,border-color .2s ease;
  cursor:pointer;
}
.dial-btn:hover{border-color:var(--acc-2)}

.dial.tx .dial-btn{
  transform:scale(.955);
  border-color:var(--acc);
  background:
    radial-gradient(circle at 50% 25%,rgba(255,255,255,.14),transparent 60%),
    linear-gradient(160deg,var(--acc),var(--acc-2));
  box-shadow:
    inset 0 -12px 28px rgba(0,0,0,.35),
    0 0 60px rgba(208,24,171,.5),
    0 14px 40px rgba(0,0,0,.55);
}
.dial.rx .dial-btn{
  border-color:var(--rx);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.07),
    inset 0 -14px 30px rgba(0,0,0,.5),
    0 0 46px rgba(34,201,138,.28),
    0 14px 40px rgba(0,0,0,.55);
}
.dial.busy .dial-btn{opacity:.55;cursor:not-allowed}
.dial.off .dial-btn{opacity:.4;cursor:default}

/* Contenuto della pastiglia */
.dial-tag{
  font-family:var(--mono);font-size:.58rem;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;color:var(--muted);
}
.dial.tx .dial-tag{color:#fff}
.dial.rx .dial-tag{color:var(--rx-2)}
.dial-main{
  font-size:1.22rem;font-weight:600;letter-spacing:-.02em;line-height:1.2;
  max-width:78%;text-align:center;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.dial.tx .dial-main{color:#fff}
.dial-sub{
  font-family:var(--mono);font-size:.66rem;color:var(--dim);
  letter-spacing:.05em;margin-top:.1rem;
}
.dial.tx .dial-sub{color:rgba(255,255,255,.8)}
.dial.rx .dial-sub{color:var(--muted)}

/* Spia ON AIR sopra il quadrante */
.onair{
  display:inline-flex;align-items:center;gap:.45rem;
  font-family:var(--mono);font-size:.6rem;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;padding:.3rem .7rem;border-radius:20px;
  border:1px solid var(--line-2);color:var(--dim);
  background:rgba(0,0,0,.25);margin-bottom:.9rem;
  transition:color .2s,border-color .2s,background .2s;
}
.onair::before{
  content:'';width:7px;height:7px;border-radius:50%;
  background:currentColor;transition:box-shadow .2s;
}
.onair.tx{color:var(--acc-3);border-color:var(--line);background:rgba(208,24,171,.1)}
.onair.tx::before{box-shadow:0 0 10px var(--acc-3);animation:blink 1s steps(2,end) infinite}
.onair.rx{color:var(--rx);border-color:rgba(34,201,138,.3);background:rgba(34,201,138,.08)}
.onair.rx::before{box-shadow:0 0 10px var(--rx)}
@keyframes blink{50%{opacity:.25}}

.dial-hint{
  margin-top:.9rem;font-size:.78rem;color:var(--muted);text-align:center;
  min-height:2.4em;line-height:1.5;padding:0 .5rem;
}
.dial-hint b{color:var(--acc-3);font-weight:600}

/* -- Strip del canale -------------------------------- */
.chan{
  display:flex;align-items:center;gap:.75rem;
  padding:.7rem .85rem;border-radius:12px;
  background:rgba(13,10,24,.66);border:1px solid var(--line-2);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.chan-id{
  font-family:var(--mono);font-size:1.02rem;font-weight:700;letter-spacing:.14em;
  color:var(--ink);line-height:1;
}
.chan-meta{font-size:.66rem;color:var(--muted);letter-spacing:.04em;margin-top:.18rem}
.chan-body{flex:1;min-width:0}
.chan-act{display:flex;gap:.4rem;flex-shrink:0}
.icon-btn{
  width:38px;height:38px;border-radius:10px;flex-shrink:0;
  border:1px solid var(--line-2);background:var(--card-2);
  display:flex;align-items:center;justify-content:center;
  font-size:1rem;transition:border-color .18s,background .18s,color .18s;
  -webkit-tap-highlight-color:transparent;
}
.icon-btn:hover{border-color:var(--line);background:rgba(208,24,171,.1)}
.icon-btn.on{border-color:var(--acc);background:rgba(208,24,171,.16);color:var(--acc-3)}
.icon-btn.mute{border-color:rgba(240,80,110,.4);background:rgba(240,80,110,.12);color:var(--err)}

/* -- Elenco dispositivi ------------------------------ */
.roster{display:flex;flex-direction:column;gap:.45rem}
.peer{
  display:flex;align-items:center;gap:.7rem;
  padding:.6rem .75rem;border-radius:12px;
  background:rgba(13,10,24,.62);border:1px solid var(--line-2);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  transition:border-color .2s,background .2s;
}
.peer.talking{border-color:rgba(34,201,138,.45);background:rgba(34,201,138,.07)}
.peer.me{border-color:var(--line)}
.peer.talking.me{border-color:var(--acc);background:rgba(208,24,171,.08)}
.peer.pending{opacity:.55}
.av{
  width:36px;height:36px;border-radius:11px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:.74rem;font-weight:700;color:#fff;
  letter-spacing:.02em;
}
.peer-body{flex:1;min-width:0}
.peer-name{
  font-size:.85rem;font-weight:500;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.peer-name span{font-size:.64rem;color:var(--dim);font-weight:400;margin-left:.35rem}
.peer-state{font-family:var(--mono);font-size:.62rem;color:var(--muted);letter-spacing:.04em;margin-top:.1rem}
.peer.talking .peer-state{color:var(--rx)}
.peer.talking.me .peer-state{color:var(--acc-3)}
.lvl{
  width:44px;height:20px;flex-shrink:0;
  display:flex;align-items:flex-end;gap:2px;
}
.lvl i{
  flex:1;border-radius:1px;background:rgba(255,255,255,.13);
  height:22%;transition:height .09s linear,background .12s;
}
.peer.talking .lvl i.on{background:var(--rx)}
.peer.talking.me .lvl i.on{background:var(--acc-3)}

/* -- Impostazioni rapide ----------------------------- */
.opts{display:flex;flex-direction:column;gap:.55rem;margin-top:.2rem}
.opt{
  display:flex;align-items:center;gap:.7rem;
  padding:.65rem .8rem;border-radius:12px;
  background:rgba(13,10,24,.62);border:1px solid var(--line-2);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.opt-body{flex:1;min-width:0}
.opt-t{font-size:.84rem;font-weight:500}
.opt-d{font-size:.7rem;color:var(--muted);line-height:1.45}
.sw{
  width:44px;height:26px;border-radius:20px;flex-shrink:0;
  background:rgba(255,255,255,.1);border:1px solid var(--line-2);
  position:relative;transition:background .2s,border-color .2s;
}
.sw::after{
  content:'';position:absolute;top:2px;left:2px;
  width:18px;height:18px;border-radius:50%;background:var(--muted);
  transition:transform .22s cubic-bezier(.3,1.4,.5,1),background .2s;
}
.sw.on{background:rgba(208,24,171,.28);border-color:var(--acc)}
.sw.on::after{transform:translateX(18px);background:var(--acc-3)}

.vol{display:flex;align-items:center;gap:.6rem;padding:.2rem .1rem}
.vol input[type=range]{
  flex:1;-webkit-appearance:none;appearance:none;height:4px;border-radius:2px;
  background:linear-gradient(90deg,var(--acc) var(--p,80%),rgba(255,255,255,.12) var(--p,80%));
}
.vol input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:16px;height:16px;border-radius:50%;
  background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.5);cursor:pointer;
}
.vol input[type=range]::-moz-range-thumb{
  width:16px;height:16px;border:none;border-radius:50%;background:#fff;cursor:pointer;
}

/* -- Foglio invito (QR) ------------------------------ */
.sheet{
  position:fixed;inset:0;z-index:50;display:none;
  align-items:flex-end;justify-content:center;
  background:rgba(4,2,10,.72);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.sheet.on{display:flex;animation:fade .22s ease}
@media (min-width:640px){ .sheet.on{align-items:center} }
.sheet-box{
  width:100%;max-width:420px;
  background:#0d0a18;border:1px solid var(--line);
  border-radius:20px 20px 0 0;
  padding:1.3rem 1.2rem calc(1.4rem + var(--safe-b));
  text-align:center;animation:rise .28s cubic-bezier(.2,.8,.3,1);
  max-height:92vh;overflow-y:auto;
}
@media (min-width:640px){ .sheet-box{border-radius:20px;padding-bottom:1.4rem} }
@keyframes rise{from{transform:translateY(24px);opacity:0}to{transform:none;opacity:1}}
.sheet-grab{width:38px;height:4px;border-radius:2px;background:var(--line-2);margin:0 auto 1rem}

.qr-card{
  background:#fff;border-radius:16px;padding:14px;
  width:min(232px,58vw);margin:0 auto;
  box-shadow:0 10px 40px rgba(0,0,0,.5);
  display:flex;align-items:center;justify-content:center;
}
.qr-card svg{display:block;width:100%;height:auto}
.qr-wait{
  width:min(232px,58vw);aspect-ratio:1;margin:0 auto;border-radius:16px;
  background:var(--card-2);display:flex;align-items:center;justify-content:center;
  color:var(--muted);font-size:.8rem;
}
.code{display:flex;justify-content:center;gap:.32rem;margin:1.05rem 0 .3rem}
.code span{
  width:2.05rem;height:2.6rem;border-radius:9px;
  background:var(--card-2);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:1.14rem;font-weight:700;
}
@media (max-width:360px){ .code span{width:1.8rem;height:2.35rem;font-size:1rem} }

/* -- Stato e note ------------------------------------ */
.status{
  display:flex;align-items:center;gap:.6rem;
  padding:.7rem .85rem;border-radius:12px;
  background:rgba(13,10,24,.66);border:1px solid var(--line-2);font-size:.83rem;
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.dot{width:9px;height:9px;border-radius:50%;background:var(--muted);flex-shrink:0}
.dot.wait{background:var(--warn);animation:pulse 1.5s infinite}
.dot.live{background:var(--rx);box-shadow:0 0 10px rgba(34,201,138,.6)}
.dot.bad{background:var(--err)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.28}}

.steps{display:flex;flex-direction:column;gap:.55rem;margin-top:.9rem}
.step{display:flex;align-items:center;gap:.65rem;font-size:.84rem;color:var(--muted)}
.step i{
  width:20px;height:20px;border-radius:50%;flex-shrink:0;
  border:1.5px solid var(--line-2);
  display:flex;align-items:center;justify-content:center;font-size:.6rem;font-style:normal;
}
.step.done{color:var(--ink)}
.step.done i{background:var(--rx);border-color:var(--rx);color:#04140d}
.step.now{color:var(--ink)}
.step.now i{border-color:var(--acc);border-top-color:transparent;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.note{
  display:flex;gap:.6rem;padding:.7rem .85rem;border-radius:11px;
  background:rgba(240,169,48,.08);border:1px solid rgba(240,169,48,.22);
  font-size:.77rem;color:#e8d7b8;line-height:1.55;margin-top:.8rem;
}
.toast{
  position:fixed;left:50%;bottom:calc(1.2rem + var(--safe-b));transform:translate(-50%,140%);
  background:#1a1226;border:1px solid var(--line);border-radius:12px;
  padding:.7rem 1.1rem;font-size:.82rem;z-index:60;
  box-shadow:0 8px 30px rgba(0,0,0,.55);transition:transform .3s;max-width:92vw;text-align:center;
}
.toast.on{transform:translate(-50%,0)}

/* -- Diagnostica ------------------------------------- */
.diag-ico{font-size:2rem;margin-bottom:.6rem}
.why{
  margin-top:.9rem;padding:.85rem .95rem;border-radius:11px;
  background:rgba(240,80,110,.07);border:1px solid rgba(240,80,110,.22);
}
.why h3{font-size:.8rem;font-weight:600;margin-bottom:.35rem;color:var(--ink)}
.why p{font-size:.79rem;color:var(--muted);line-height:1.6}
.fix{margin-top:.85rem;display:flex;flex-direction:column;gap:.5rem}
.fix li{display:flex;gap:.55rem;font-size:.82rem;line-height:1.55}
.fix li b{color:var(--acc-3);font-weight:600;flex-shrink:0}

details.tech{margin-top:.9rem}
details.tech summary{font-size:.75rem;color:var(--muted);cursor:pointer;padding:.35rem 0;list-style:none}
details.tech summary::-webkit-details-marker{display:none}
details.tech summary::before{content:'\25B8 ';color:var(--acc-3)}
details.tech[open] summary::before{content:'\25BE '}
details.tech pre{
  margin-top:.5rem;padding:.75rem;border-radius:10px;
  background:#05040a;border:1px solid var(--line-2);
  font-family:var(--mono);font-size:.66rem;color:#a89ac8;
  white-space:pre-wrap;word-break:break-all;line-height:1.6;
  max-height:220px;overflow-y:auto;
}

/* Invito a installare: compare in basso, si chiude e non torna. */
.install{
  position:fixed;z-index:55;
  left:.7rem;right:.7rem;bottom:calc(.7rem + var(--safe-b));
  display:flex;align-items:center;gap:.75rem;
  padding:.7rem .8rem;border-radius:16px;
  background:rgba(16,11,28,.92);border:1px solid var(--line);
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  box-shadow:0 12px 40px rgba(0,0,0,.6);
  animation:slideUp .38s cubic-bezier(.2,.9,.3,1);
}
.install[hidden]{display:none}
@media (min-width:640px){ .install{left:auto;right:1.2rem;width:380px} }
@keyframes slideUp{from{transform:translateY(120%);opacity:0}to{transform:none;opacity:1}}
.install img{width:42px;height:42px;border-radius:11px;flex-shrink:0}
.install-body{flex:1;min-width:0}
.install-t{font-size:.86rem;font-weight:600;line-height:1.3}
.install-d{font-size:.71rem;color:var(--muted);line-height:1.4}
.install-go{flex-shrink:0;padding:.55rem .9rem;font-size:.8rem;border-radius:10px}
.install-x{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;
  color:var(--dim);font-size:1.15rem;line-height:1;
  display:flex;align-items:center;justify-content:center;
}
.install-x:hover{color:var(--ink);background:var(--card-2)}
.install.ios{flex-wrap:wrap}
.install.ios .install-d b{color:var(--acc-3)}

.foot{margin-top:1.4rem;text-align:center;font-size:.68rem;color:var(--dim);line-height:1.7}
.foot a{color:var(--muted)}
.foot a:hover{color:var(--acc-3)}
.hide{display:none!important}

/* ======================================================
   Sala radio: mobile in colonna, desktop in due colonne
====================================================== */
.room{display:flex;flex-direction:column;gap:.85rem}
.room-side{display:flex;flex-direction:column;gap:.85rem;min-width:0}
.room-main{display:flex;flex-direction:column;min-width:0}

@media (min-width:900px){
  .room{
    display:grid;
    grid-template-columns:minmax(0,330px) minmax(0,1fr);
    grid-template-areas:"chan main" "side main";
    grid-template-rows:auto 1fr;
    gap:.9rem 1.1rem;align-items:start;
  }
  .chan{grid-area:chan}
  .room-side{grid-area:side}
  .room-main{
    grid-area:main;align-self:stretch;
    background:rgba(13,10,24,.6);border:1px solid var(--line-2);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border-radius:20px;padding:1.8rem 1.4rem 1.5rem;
    align-items:center;justify-content:center;
  }
  .room-main .dial-zone{width:100%}
  .room-main .dial-hint{max-width:34ch}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .dial.tx .dial-ripple{display:none}
}