:root{
  --bg:#060708; --bg2:#0c0e11; --surf:#121519; --surf2:#181c21;
  --line:rgba(255,255,255,.07); --line2:rgba(255,255,255,.12);
  --text:#e9ecef; --mut:#7b828c; --dim:#4a5059;
  --acc:#8ef5d2; --acc-rgb:142,245,210;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","Inter","Segoe UI",system-ui,sans-serif;
  --disp:-apple-system,BlinkMacSystemFont,"SF Pro Display","Inter","Segoe UI",system-ui,sans-serif;
  --mono:"SF Mono",ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
  --sat:env(safe-area-inset-top,0px); --sab:env(safe-area-inset-bottom,0px);
  --p:0;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%;background:var(--bg);color:var(--text);font-family:var(--sans);overflow:hidden;overscroll-behavior:none}
body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
svg{width:100%;height:100%;display:block}
[hidden]{display:none!important}

.screen{position:fixed;inset:0;display:flex;flex-direction:column;max-width:640px;margin:0 auto}

/* ---------------- pick ---------------- */
#pick{align-items:center;justify-content:center;gap:44px;padding:calc(var(--sat) + 40px) 28px calc(var(--sab) + 40px)}
.pick-scope{width:180px;height:40px;opacity:.7}
.pick-scope canvas{width:100%;height:100%}
.pick-list{display:flex;flex-direction:column;gap:14px;width:100%;max-width:320px}
.pick-item{
  font-family:var(--mono);font-size:30px;letter-spacing:.22em;text-indent:.22em;font-weight:500;
  padding:22px 0;border-radius:20px;background:var(--surf);border:1px solid var(--line);
  color:var(--text);text-align:center;opacity:0;transform:translateY(10px);
  transition:opacity .5s,transform .5s cubic-bezier(.2,.8,.2,1),background .25s,border-color .25s,color .25s,box-shadow .25s;
}
.pick-item.in{opacity:1;transform:none}
.pick-list.chosen .pick-item{opacity:.22}
.pick-list.chosen .pick-item.sel{opacity:1;border-color:rgba(var(--acc-rgb),.55);color:var(--acc);
  box-shadow:0 0 0 1px rgba(var(--acc-rgb),.25),0 0 40px -8px rgba(var(--acc-rgb),.45);background:#0f1916}
.pick-go{width:64px;height:64px;border-radius:50%;padding:18px;background:var(--acc);color:#04120d;
  opacity:0;transform:scale(.6);pointer-events:none;transition:opacity .3s,transform .35s cubic-bezier(.2,1.4,.4,1);
  box-shadow:0 10px 40px -10px rgba(var(--acc-rgb),.7)}
.pick-go.on{opacity:1;transform:none;pointer-events:auto}
.pick-go:active{transform:scale(.93)}
#pick.leaving{transition:opacity .5s,filter .5s;opacity:0;filter:blur(6px)}

/* ---------------- main ---------------- */
.head{display:flex;align-items:center;justify-content:space-between;padding:calc(var(--sat) + 10px) 18px 0;height:calc(var(--sat) + 44px);flex:none}
.me{font-family:var(--mono);font-size:12px;letter-spacing:.18em;color:var(--mut)}
.me::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--dim);margin-right:9px;vertical-align:1px;transition:background .4s,box-shadow .4s}
.me.on::before{background:var(--acc);box-shadow:0 0 8px rgba(var(--acc-rgb),.8)}
.snd{width:34px;height:34px;padding:8px;color:var(--dim);border-radius:50%;transition:color .2s}
.snd.on{color:var(--mut)}

.tuner{position:relative;flex:none;padding:4px 0 0;user-select:none;-webkit-user-select:none;touch-action:none}
.glow{position:absolute;left:50%;top:6px;width:340px;height:170px;transform:translateX(-50%);pointer-events:none;
  background:radial-gradient(closest-side,rgba(var(--acc-rgb),.22),rgba(var(--acc-rgb),0));opacity:calc(var(--p) * 1);filter:blur(8px);transition:opacity .15s}
.readout{position:relative;text-align:center;height:84px;display:flex;align-items:center;justify-content:center}
#freq{font-family:var(--disp);font-weight:200;font-size:76px;line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums;
  color:color-mix(in srgb,var(--acc) calc(var(--p) * 100%),var(--text));
  text-shadow:0 0 calc(var(--p) * 28px) rgba(var(--acc-rgb),calc(var(--p) * .55));cursor:text;transition:opacity .3s}
.off #freq{opacity:.35}
#freqIn{font-family:var(--disp);font-weight:200;font-size:76px;line-height:1;letter-spacing:-.02em;text-align:center;
  width:280px;background:transparent;border:0;outline:0;color:var(--acc);caret-color:var(--acc);font-variant-numeric:tabular-nums}
.scope{display:block;width:100%;height:36px;margin-top:2px}
.dial{position:relative;height:66px;margin-top:4px;cursor:grab;
  -webkit-mask:linear-gradient(90deg,transparent,#000 22%,#000 78%,transparent);mask:linear-gradient(90deg,transparent,#000 22%,#000 78%,transparent)}
.dial:active{cursor:grabbing}
.dial canvas{width:100%;height:100%;display:block}
.needle{position:absolute;left:50%;top:6px;bottom:6px;width:2px;margin-left:-1px;border-radius:2px;
  background:color-mix(in srgb,var(--acc) calc(35% + var(--p) * 65%),#fff);
  box-shadow:0 0 calc(4px + var(--p) * 14px) rgba(var(--acc-rgb),calc(.25 + var(--p) * .6))}

.stream-wrap{position:relative;flex:1;min-height:0;border-top:1px solid var(--line);
  -webkit-mask:linear-gradient(#000 0,#000 100%);}
.stream-wrap::before{content:"";position:absolute;left:0;right:0;top:0;height:22px;background:linear-gradient(var(--bg),transparent);z-index:2;pointer-events:none}
.stream{position:absolute;inset:0;overflow-y:auto;overflow-x:hidden;padding:18px 0 12px;display:flex;flex-direction:column;
  touch-action:pan-y;-webkit-overflow-scrolling:touch;transition:opacity .25s,filter .25s;scrollbar-width:none}
.stream::-webkit-scrollbar{display:none}
.stream>.spacer{flex:1}
.stream.drift{opacity:.0;filter:blur(3px)}

.msg{position:relative;padding:8px 20px 8px 22px;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;
  animation:msgIn .35s cubic-bezier(.2,.8,.2,1);transition:opacity 1s linear,background .2s}
@keyframes msgIn{from{opacity:0;transform:translateY(8px)}}
.msg .inner{position:relative;will-change:transform}
.msg.pressed{background:rgba(255,255,255,.03)}
.msg .life{position:absolute;left:10px;top:12px;bottom:12px;width:2px;border-radius:2px;background:var(--line);overflow:hidden}
.msg .life i{position:absolute;left:0;right:0;bottom:0;background:var(--cs-c,var(--mut));opacity:.55;height:100%;transform-origin:bottom}
.msg .cs{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--cs-c,var(--mut));font-weight:500}
.msg.mine .cs{color:var(--acc)}
.msg .tx{font-size:16.5px;line-height:1.38;margin-top:3px;color:var(--text);word-wrap:break-word;overflow-wrap:anywhere;letter-spacing:-.005em}
.msg .q{display:flex;align-items:center;gap:7px;margin-bottom:5px;font-size:13px;color:var(--mut);min-width:0}
.msg .q svg{width:13px;height:13px;flex:none;opacity:.7;transform:scaleX(-1) rotate(180deg)}
.msg .q .qcs{font-family:var(--mono);font-size:10.5px;letter-spacing:.12em;color:var(--cs-q,var(--mut));flex:none}
.msg .q .qsn{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;opacity:.85}
.msg .q.gone{font-size:11px;font-style:italic;color:var(--dim)}
.msg .q.gone .qcs{display:none}
.msg .rxs{display:flex;gap:6px;margin-top:7px}
.msg .rxs:empty{display:none}
.rxc{display:inline-flex;align-items:center;gap:5px;height:26px;padding:0 9px 0 7px;border-radius:13px;background:var(--surf);border:1px solid var(--line);
  font-size:12px;font-variant-numeric:tabular-nums;color:var(--mut);transition:background .2s,border-color .2s,color .2s}
.rxc svg{width:15px;height:15px}
.rxc.mine{border-color:rgba(var(--acc-rgb),.4);color:var(--acc);background:rgba(var(--acc-rgb),.07)}
.rxc.pop{animation:pop .3s cubic-bezier(.2,1.6,.4,1)}
@keyframes pop{50%{transform:scale(1.15)}}
.msg .sw{position:absolute;left:-34px;top:50%;width:22px;height:22px;margin-top:-11px;color:var(--mut);opacity:0;transform:scale(.6);transition:color .15s}
.msg .sw.arm{color:var(--acc)}
.msg.expiring{opacity:.0}

/* ---------------- compose ---------------- */
.compose{flex:none;padding:8px 12px calc(var(--sab) + 10px);background:linear-gradient(transparent,var(--bg) 30%)}
.reply-chip{display:flex;align-items:center;gap:8px;margin:0 6px 8px;padding:8px 6px 8px 12px;border-radius:14px;background:var(--surf);border:1px solid var(--line);
  font-size:13px;color:var(--mut);animation:msgIn .25s}
.rc-ico{width:14px;height:14px;flex:none;color:var(--acc);transform:scaleX(-1) rotate(180deg)}
.rc-cs{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--text);flex:none}
.rc-snip{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}
.reply-chip button{width:26px;height:26px;padding:5px;flex:none;color:var(--mut)}
.bar{display:flex;align-items:center;gap:8px;height:50px;padding:0 5px 0 18px;border-radius:25px;background:var(--surf);border:1px solid var(--line);transition:border-color .2s}
.bar:focus-within{border-color:var(--line2)}
#say{flex:1;min-width:0;height:100%;background:transparent;border:0;outline:0;color:var(--text);font:16.5px var(--sans);caret-color:var(--acc)}
#sendBtn{width:40px;height:40px;border-radius:50%;padding:10px;background:var(--surf2);color:var(--dim);transition:background .2s,color .2s,transform .15s}
#sendBtn:not(:disabled){background:var(--acc);color:#04120d}
#sendBtn:not(:disabled):active{transform:scale(.9)}
.compose.slow .bar{animation:shake .35s}
@keyframes shake{25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}

/* ---------------- sheet ---------------- */
.sheet{position:fixed;inset:0;z-index:50;background:rgba(3,4,5,.55);-webkit-backdrop-filter:blur(14px) saturate(1.2);backdrop-filter:blur(14px) saturate(1.2);
  display:flex;align-items:center;justify-content:center;padding:24px;animation:fade .2s}
@keyframes fade{from{opacity:0}}
.sheet.out{transition:opacity .18s;opacity:0}
.sheet-body{width:100%;max-width:380px;display:flex;flex-direction:column;gap:12px;animation:lift .28s cubic-bezier(.2,1.2,.4,1)}
@keyframes lift{from{transform:scale(.94);opacity:0}}
.rx-bar{align-self:flex-start;display:flex;gap:4px;padding:6px;border-radius:30px;background:var(--surf2);border:1px solid var(--line2);box-shadow:0 20px 50px -20px #000}
.rx-bar button{width:50px;height:50px;border-radius:50%;padding:12px;color:var(--text);transition:transform .2s cubic-bezier(.2,1.6,.4,1),background .15s,color .15s}
.rx-bar button:active{transform:scale(1.25)}
.rx-bar button.mine{background:rgba(var(--acc-rgb),.12);color:var(--acc)}
.sheet-msg{padding:14px 18px;border-radius:20px;background:var(--surf);border:1px solid var(--line)}
.sheet-msg .cs{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--cs-c,var(--mut))}
.sheet-msg .tx{font-size:16.5px;line-height:1.38;margin-top:3px}
.sheet-acts{display:flex;flex-direction:column;border-radius:18px;background:var(--surf2);border:1px solid var(--line);overflow:hidden}
.sheet-acts button{display:flex;align-items:center;gap:14px;height:50px;padding:0 18px;font-size:15.5px;text-align:left;border-top:1px solid var(--line)}
.sheet-acts button:first-child{border-top:0}
.sheet-acts button svg{width:19px;height:19px;color:var(--mut)}
.sheet-acts button:active{background:rgba(255,255,255,.04)}
#actBlock,#actReport{color:#ff8a80}
#actBlock svg,#actReport svg{color:#ff8a80}
.sheet-acts button.done{color:var(--mut)}
.sheet-acts button.done svg{color:var(--acc)}

@media (min-width:700px){
  .screen{border-left:1px solid var(--line);border-right:1px solid var(--line)}
}