:root{
  --bg:#0b0d10; --fg:#e9edf3; --muted:#8b94a6; --line:#232833;
  --panel:#141821; --accent:#3ddc97; --warn:#e0a44a; --danger:#e8756a;
  --ready:#3ddc97; --idle:#5b6270;
}

*{box-sizing:border-box}

html,body{height:100%}

body{
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font:16px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  /* Removes the 300ms double-tap delay without disabling pinch zoom. */
  touch-action:manipulation;
  display:flex;
  flex-direction:column;
  padding:env(safe-area-inset-top) env(safe-area-inset-right)
          env(safe-area-inset-bottom) env(safe-area-inset-left);
  overscroll-behavior:none;
}

.bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-bottom:1px solid var(--line);flex:0 0 auto;
}

.status{display:flex;align-items:center;gap:9px;min-width:0}

.dot{
  width:10px;height:10px;border-radius:50%;
  background:var(--idle);flex:0 0 auto;
}
.dot.ready{background:var(--ready)}
.dot.warn{background:var(--warn)}
.dot.error{background:var(--danger)}

.conn{
  font-size:14px;color:var(--muted);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

.icon-btn{
  background:none;border:0;color:var(--muted);
  padding:8px;margin:-8px;border-radius:8px;cursor:pointer;
  display:flex;align-items:center;
}
.icon-btn:focus-visible,#click-button:focus-visible,.btn:focus-visible,summary:focus-visible{
  outline:3px solid var(--accent);outline-offset:3px;
}

.stage{
  flex:1 1 auto;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:18px;padding:24px 20px 40px;
}

#click-button{
  width:min(88vw,32rem);
  min-height:45vh;
  border-radius:26px;
  border:2px solid var(--line);
  background:var(--panel);
  color:var(--fg);
  font-size:clamp(30px,9vw,52px);
  font-weight:800;
  letter-spacing:.06em;
  cursor:pointer;
  -webkit-user-select:none;user-select:none;
  -webkit-tap-highlight-color:transparent;
  transition:transform .06s ease,border-color .12s ease,opacity .12s ease;
}
#click-button:enabled{border-color:var(--accent);color:var(--accent)}
#click-button:enabled:active{transform:scale(.985)}
#click-button:disabled{opacity:.4;cursor:not-allowed}

.hint{margin:0;color:var(--muted);font-size:14px;text-align:center}

.result{
  margin:0;font-size:15px;text-align:center;min-height:1.5em;
  color:var(--fg);
}
.result.posted{color:var(--accent)}
.result.warn{color:var(--warn)}
.result.error{color:var(--danger)}

.receivers{
  list-style:none;margin:0;padding:0;
  display:flex;flex-direction:column;gap:6px;width:min(88vw,32rem);
}
.receiver{
  display:flex;align-items:center;justify-content:space-between;
  padding:8px 12px;border:1px solid var(--line);border-radius:10px;
  background:var(--panel);font-size:14px;
}
.receiver-name{color:var(--fg);font-weight:600}
.receiver-status{color:var(--muted)}
.receiver.online .receiver-status{color:var(--accent)}
.receiver.offline .receiver-status{color:var(--idle)}
.receiver.warn .receiver-status{color:var(--warn)}
.receiver.error .receiver-status{color:var(--danger)}

@media (prefers-reduced-motion:reduce){
  #click-button{transition:none}
  #click-button:enabled:active{transform:none}
}

/* -- settings sheet ------------------------------------------------------ */

.sheet{
  border:0;border-radius:16px;padding:0;
  background:var(--panel);color:var(--fg);
  width:min(92vw,26rem);
}
.sheet::backdrop{background:rgba(0,0,0,.6)}

.sheet-form{padding:22px;display:flex;flex-direction:column;gap:12px}

.sheet h2{margin:0;font-size:19px}
.sheet .sub{margin:10px 0 0;font-size:14px;color:var(--muted);
  border-top:1px solid var(--line);padding-top:14px}

.field{font-size:13px;color:var(--muted)}

.input{
  width:100%;padding:12px;border-radius:10px;
  border:1px solid var(--line);background:var(--bg);color:var(--fg);
  font:14px ui-monospace,SFMono-Regular,Menlo,monospace;
}

.muted{margin:0;color:var(--muted);font-size:13px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}

.row{display:flex;gap:10px}
.row.end{justify-content:flex-end;margin-top:6px}

.btn{
  flex:1;padding:12px 14px;border-radius:10px;
  border:1px solid var(--line);background:var(--bg);color:var(--fg);
  font-size:15px;cursor:pointer;
}
.btn.primary{border-color:var(--accent);color:var(--accent)}
.btn.danger{border-color:var(--danger);color:var(--danger)}
.btn.retry{flex:0 0 auto;width:min(88vw,20rem)}

[hidden]{display:none!important}
.install{line-height:1.4}

.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted)}
.check input{margin-top:3px;flex:0 0 auto}

/* -- device pairing ----------------------------------------------------- */

.pairing{
  width:min(100%,34rem);margin:auto;padding:clamp(28px,8vw,56px) 24px;
  align-self:center;text-align:center;
}

.pairing-mark{
  position:relative;width:92px;height:54px;margin:0 auto 26px;
  filter:drop-shadow(0 10px 24px rgba(61,220,151,.14));
  transition:transform .35s ease;
}
.pairing-mark span{
  position:absolute;top:8px;width:46px;height:38px;border:2px solid var(--accent);
  border-radius:20px;
}
.pairing-mark span:first-child{left:5px;transform:rotate(-12deg)}
.pairing-mark span:last-child{right:5px;transform:rotate(12deg)}

.pairing-kicker{
  margin:0 0 8px;color:var(--accent);font:700 12px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;
  letter-spacing:.14em;text-transform:uppercase;
}
.pairing h1{margin:0;font-size:clamp(32px,9vw,48px);line-height:1.04;letter-spacing:-.035em}
.pairing-message{margin:18px auto 0;color:var(--muted);max-width:29rem}
.pairing-alert{margin:18px auto 0;color:var(--danger);font-weight:650;max-width:29rem}
.pairing-code{
  display:block;margin:28px auto 0;padding:18px 20px;width:min(100%,22rem);
  border:1px solid var(--accent);border-radius:18px;background:#0e1715;color:var(--accent);
  font:800 clamp(32px,11vw,52px)/1 ui-monospace,SFMono-Regular,Menlo,monospace;
  letter-spacing:.13em;font-variant-numeric:tabular-nums;
}
.pairing-actions{display:flex;gap:10px;margin:28px auto 0;max-width:24rem}
.pairing-action{min-height:44px}
.pairing-privacy{margin:16px auto 0;color:var(--muted);font-size:12px;max-width:24rem}

.advanced{border-top:1px solid var(--line);padding-top:12px}
.advanced summary{cursor:pointer;color:var(--muted);min-height:44px;display:flex;align-items:center}
.advanced-body{display:flex;flex-direction:column;gap:12px;padding-top:8px}

@media (prefers-reduced-motion:reduce){
  .pairing-mark{transition:none}
}