:root{
  --bg:#0a0e14;
  --panel:#0f1620;
  --edge:rgba(34,255,187,0.18);
  --green:#22ffbb;
  --dim:#5a7a72;
  --amber:#ff8c32;
  --text:#c9ffe9;
}
*{box-sizing:border-box;margin:0;padding:0;}
html,body{height:100%;}
body{
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(34,255,187,0.08), transparent 60%),
    radial-gradient(800px 500px at 10% 110%, rgba(255,140,50,0.06), transparent 55%),
    var(--bg);
  color:var(--text);
  font-family:'IBM Plex Mono',ui-monospace,Menlo,Consolas,monospace;
  font-weight:300;
  overflow-x:hidden;
}
.scanlines{
  position:fixed;inset:0;pointer-events:none;z-index:999;
  background:repeating-linear-gradient(to bottom, rgba(0,0,0,0) 0 2px, rgba(0,0,0,0.14) 2px 3px);
  mix-blend-mode:multiply;opacity:.5;
}
#app{max-width:1300px;margin:0 auto;padding:14px 16px 40px;}

/* header */
header{
  display:flex;justify-content:space-between;align-items:flex-end;
  border-bottom:1px solid var(--edge);padding-bottom:12px;margin-bottom:16px;
  flex-wrap:wrap;gap:10px;
}
h1{
  font-family:'Bricolage Grotesque',sans-serif;font-weight:800;
  font-size:clamp(22px,4vw,40px);letter-spacing:-.5px;color:var(--green);
  text-shadow:0 0 18px rgba(34,255,187,0.4);
}
.subtitle{color:var(--dim);font-size:12px;margin-top:2px;letter-spacing:1px;}
.led-wrap{display:flex;align-items:center;gap:8px;font-size:11px;letter-spacing:2px;color:var(--dim);}
.led{width:12px;height:12px;border-radius:50%;background:#333;box-shadow:0 0 0 1px #000;}
.led.idle{background:#664;box-shadow:0 0 6px rgba(160,140,60,.6);}
.led.tx{background:var(--green);box-shadow:0 0 12px var(--green);animation:blink 1s infinite;}
@keyframes blink{50%{opacity:.35;}}

/* layout */
main{display:grid;grid-template-columns:320px 1fr;gap:16px;}
@media(max-width:860px){ main{grid-template-columns:1fr;} }

#deck{display:flex;flex-direction:column;gap:12px;}
.panel{
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.2));
  border:1px solid var(--edge);border-radius:8px;padding:12px 14px;
}
.panel h2{
  font-size:11px;letter-spacing:3px;color:var(--amber);margin-bottom:10px;font-weight:600;
  text-shadow:0 0 8px rgba(255,140,50,.3);
}

/* dropzone */
.dropzone{
  border:1.5px dashed var(--edge);border-radius:8px;padding:22px 10px;text-align:center;
  cursor:pointer;color:var(--dim);font-size:13px;line-height:1.5;transition:.15s;
}
.dropzone small{font-size:11px;opacity:.7;}
.dropzone:hover,.dropzone.over{border-color:var(--green);color:var(--green);background:rgba(34,255,187,0.05);}
.srcinfo{font-size:11px;color:var(--dim);margin:10px 0;word-break:break-all;}

/* controls */
.ctrl{margin-bottom:14px;}
.ctrl label{display:flex;justify-content:space-between;font-size:11px;letter-spacing:1px;color:var(--dim);margin-bottom:6px;}
.ctrl .val{color:var(--green);font-weight:600;}
input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:4px;border-radius:4px;
  background:linear-gradient(90deg,var(--green),rgba(34,255,187,0.15));outline:none;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:18px;height:18px;border-radius:50%;
  background:#0a0e14;border:2px solid var(--green);box-shadow:0 0 10px var(--green);cursor:pointer;
}
input[type=range]::-moz-range-thumb{
  width:16px;height:16px;border-radius:50%;background:#0a0e14;border:2px solid var(--green);
  box-shadow:0 0 10px var(--green);cursor:pointer;
}

/* buttons */
button{
  font-family:inherit;font-size:12px;letter-spacing:1px;cursor:pointer;
  background:rgba(34,255,187,0.06);color:var(--text);border:1px solid var(--edge);
  border-radius:6px;padding:9px 12px;transition:.12s;
}
button:hover:not(:disabled){background:rgba(34,255,187,0.16);border-color:var(--green);}
button:disabled{opacity:.35;cursor:not-allowed;}
button.ghost{width:100%;margin-top:4px;color:var(--dim);}
button.primary{background:var(--green);color:#04120c;font-weight:600;border-color:var(--green);flex:2;}
button.primary:hover:not(:disabled){box-shadow:0 0 16px rgba(34,255,187,.5);}
button.danger{background:rgba(255,80,60,0.12);border-color:rgba(255,80,60,.4);color:#ff9d8c;}
.presets{display:flex;flex-direction:column;gap:8px;}
.presets h2{margin-bottom:4px;}
.transport{display:flex;gap:8px;}
.transport button{flex:1;}

.lock{
  margin-top:6px;text-align:center;font-size:13px;letter-spacing:2px;color:var(--dim);
  padding:8px;border:1px solid var(--edge);border-radius:6px;
}
.lock.locked{color:var(--green);border-color:var(--green);text-shadow:0 0 10px var(--green);
  animation:pulse 1.2s infinite;}
@keyframes pulse{50%{background:rgba(34,255,187,0.08);}}

/* scopes */
#scopes{display:flex;flex-direction:column;gap:14px;}
.scopewrap{
  background:rgba(4,8,14,0.6);border:1px solid var(--edge);border-radius:8px;
  padding:8px;position:relative;
}
.scopelabel{
  font-size:10px;letter-spacing:2px;color:var(--dim);margin-bottom:6px;
}
#spectrum{width:100%;height:180px;display:block;}
#waterfall{width:100%;height:150px;display:block;background:#020508;border-radius:4px;}
.scoperow{display:flex;gap:14px;}
.scoperow .half{flex:1;}
#iq,#scope{width:100%;height:180px;display:block;background:rgba(2,5,8,0.6);border-radius:4px;}
@media(max-width:560px){ .scoperow{flex-direction:column;} }

/* readout */
#readout{
  display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-top:16px;
  background:rgba(4,8,14,0.5);border:1px solid var(--edge);border-radius:8px;padding:12px;
}
@media(max-width:640px){ #readout{grid-template-columns:repeat(3,1fr);} }
#readout div{text-align:center;}
#readout span{display:block;font-size:9px;letter-spacing:2px;color:var(--dim);margin-bottom:4px;}
#readout b{font-size:20px;color:var(--green);font-weight:600;text-shadow:0 0 10px rgba(34,255,187,.4);}
#readout div::after{content:attr(data-u);}

footer{
  margin-top:24px;padding-top:14px;border-top:1px solid var(--edge);
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  font-size:11px;color:var(--dim);flex-wrap:wrap;
}
footer a{color:var(--amber);text-decoration:none;border-bottom:1px dashed rgba(255,140,50,.4);}
footer a:hover{color:var(--green);border-color:var(--green);}