:root{
  --bg:#010302;--green:#2fdc5e;--green-dim:#1a8f3d;--bone:#e8f5ea;--rust:#8a3a22;
  --bass:0;--mid:0;--high:0;--energy:0;--kick:0;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden}
body{
  background:var(--bg);color:var(--bone);
  font-family:ui-monospace,'SF Mono',Menlo,Consolas,monospace;
  -webkit-font-smoothing:antialiased;
}
#signalCanvas{position:fixed;inset:0;width:100vw;height:100vh;display:block;z-index:0}
.scanlines{
  position:fixed;inset:0;z-index:2;pointer-events:none;opacity:.05;
  background:repeating-linear-gradient(0deg,transparent 0 2px,#9dffb0 2px 3px);
  mix-blend-mode:overlay;
}

/* ---------- header ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:10;
  display:flex;justify-content:space-between;align-items:center;
  padding:calc(10px + env(safe-area-inset-top)) 16px 10px;
  font-size:10px;letter-spacing:.14em;
  background:linear-gradient(180deg,rgba(1,3,2,.75),transparent);
}
.brand{color:var(--bone);text-decoration:none;display:flex;flex-direction:column;gap:2px}
.brand strong{font-size:13px;letter-spacing:.22em}
.brand span{color:var(--green)}
.brand small{font-size:8px;opacity:.55;letter-spacing:.2em}
.top-actions{display:flex;align-items:center;gap:12px}
.top-actions a,.top-actions button{
  color:var(--bone);background:none;border:1px solid rgba(232,245,234,.25);
  font:inherit;font-size:9px;letter-spacing:.14em;padding:4px 8px;text-decoration:none;cursor:pointer;
}
.top-actions button:hover,.top-actions a:hover{border-color:var(--green);color:var(--green)}
.live-state{display:flex;align-items:center;gap:6px;opacity:.8}
.live-state i{width:6px;height:6px;border-radius:50%;background:var(--rust)}
body[data-state="locked"] .live-state i,body[data-state="surge"] .live-state i{background:var(--green);box-shadow:0 0 8px var(--green)}

/* ---------- main / telemetry ---------- */
main{position:fixed;inset:0;z-index:5;pointer-events:none;display:flex;align-items:flex-end;justify-content:center}
.telemetry{
  position:fixed;top:50%;transform:translateY(-50%);z-index:6;
  display:flex;flex-direction:column;gap:6px;font-size:9px;letter-spacing:.14em;opacity:.55;
}
.telemetry b{opacity:.6;font-weight:400}
.telemetry span{color:var(--green);font-size:11px}
.telemetry-left{left:14px}
.telemetry-right{right:14px;text-align:right}
.carrier-label{
  position:fixed;top:calc(52px + env(safe-area-inset-top));left:0;right:0;z-index:6;
  display:flex;flex-direction:column;align-items:center;gap:3px;
  font-size:9px;letter-spacing:.3em;opacity:.6;pointer-events:none;
}
.carrier-label b{color:var(--green);font-weight:400;font-size:10px}

/* ---------- enter button ---------- */
.enter{
  position:fixed;left:50%;bottom:calc(148px + env(safe-area-inset-bottom));transform:translateX(-50%);
  z-index:12;pointer-events:auto;
  display:flex;align-items:center;gap:14px;
  background:rgba(1,6,3,.55);backdrop-filter:blur(6px);
  border:1px solid rgba(47,220,94,.5);color:var(--bone);
  padding:14px 22px;font:inherit;cursor:pointer;letter-spacing:.16em;
  transition:border-color .2s,box-shadow .2s,opacity .3s,transform .3s;
}
.enter:hover{border-color:var(--green);box-shadow:0 0 24px rgba(47,220,94,.35)}
.enter .enter-icon{font-size:18px;color:var(--green)}
.enter b{display:block;font-size:12px;letter-spacing:.2em}
.enter small{display:block;font-size:8px;opacity:.6;letter-spacing:.14em;margin-top:3px}
body[data-state="locked"] .enter,body[data-state="surge"] .enter,body[data-state="reacquire"] .enter{
  opacity:0;pointer-events:none;transform:translateX(-50%) translateY(10px);
}

/* ---------- now playing strip ---------- */
.now-playing{
  position:fixed;left:0;right:0;bottom:0;z-index:11;pointer-events:auto;
  display:flex;align-items:center;gap:16px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:linear-gradient(0deg,rgba(1,3,2,.85),rgba(1,3,2,.35) 70%,transparent);
  font-size:10px;
}
.np-status{display:flex;flex-direction:column;gap:2px;font-size:8px;letter-spacing:.2em;opacity:.7;min-width:70px}
.np-status i{color:var(--green);font-style:normal}
body.track-change .np-status i{opacity:1}
.np-copy{flex:1;min-width:0}
.np-copy p:first-child{font-size:8px;letter-spacing:.24em;color:var(--green);opacity:.85}
.np-copy h1{
  font-size:15px;font-weight:600;letter-spacing:.06em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:1px 0;
}
.np-copy .artist{font-size:9px;opacity:.65;letter-spacing:.12em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.transport{display:flex;align-items:center;gap:10px;font-size:9px;letter-spacing:.12em;opacity:.9}
.transport .round{
  width:36px;height:36px;border-radius:50%;flex:none;
  border:1px solid rgba(47,220,94,.6);background:rgba(1,6,3,.6);color:var(--green);
  font:inherit;font-size:13px;cursor:pointer;
}
.transport .round:hover{box-shadow:0 0 14px rgba(47,220,94,.4)}
.live-rail{width:70px;height:2px;background:rgba(232,245,234,.15);overflow:hidden}
.live-rail span{display:block;height:100%;width:100%;background:var(--green);opacity:.62}
.transport label{display:flex;align-items:center;gap:6px;opacity:.8}
.transport input[type=range]{width:64px;accent-color:var(--green)}

/* ---------- footer ---------- */
footer{
  display:none;
}

/* ---------- fallback ---------- */
.fallback{
  position:fixed;inset:auto 16px calc(120px + env(safe-area-inset-bottom)) 16px;z-index:20;
  border:1px solid var(--rust);background:rgba(1,3,2,.9);padding:14px;
  display:flex;flex-direction:column;gap:6px;font-size:11px;letter-spacing:.08em;text-align:center;
}
.fallback[hidden]{display:none}
.fallback strong{color:var(--rust)}

/* ---------- linked playback + mobile immersive mode ---------- */
body.linked-playback .transport label{display:none}
body.immersive .topbar{background:none;pointer-events:none}
body.immersive .brand,body.immersive .live-state,body.immersive #qualityBtn,body.immersive .top-actions a{opacity:0;pointer-events:none}
body.immersive .top-actions{position:fixed;top:calc(8px + env(safe-area-inset-top));right:8px;z-index:30;pointer-events:auto}
body.immersive #fullscreenBtn{display:block;opacity:1;pointer-events:auto;background:rgba(1,3,2,.82);border-color:var(--green);color:var(--green);min-height:36px}
body.immersive .carrier-label,body.immersive .telemetry,body.immersive .now-playing,body.immersive footer{opacity:0;pointer-events:none}

/* ---------- mobile ---------- */
@media (max-width:820px){
  .telemetry{display:none}
  .carrier-label{font-size:8px}
  .now-playing{flex-wrap:wrap;gap:8px;padding-top:8px}
  .np-status{min-width:0}
  .np-copy h1{font-size:13px}
  .live-rail{width:44px}
  .transport label{display:none}
  .top-actions a[href]{display:none}
  .enter{bottom:calc(128px + env(safe-area-inset-bottom));padding:12px 18px;width:min(86vw,340px);justify-content:center}
}