/* AIANDGRACE — styles */
:root{
  --bg-low:#000000; --bg-high:#000000;
  --ink:#FFFFFF; --ink-dim:#A6A6A6;
  --pkg:#FFFFFF; --meter-low:#1A1A1A; --meter-high:#FFFFFF;
  --line:#FFFFFF;
}
*{margin:0;padding:0;box-sizing:border-box;}
html,body{height:100%;background:#000;overflow:hidden;}
body{
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  color:var(--ink);
  -webkit-user-select:none;user-select:none;
  -webkit-tap-highlight-color:transparent;
}
#wrap{position:fixed;inset:0;touch-action:pinch-zoom;}
canvas{display:block;width:100%;height:100%;image-rendering:pixelated;image-rendering:crisp-edges;touch-action:pinch-zoom;}

/* retro screen: faint scanlines + soft vignette, never blocks input */
#crt{
  position:absolute;inset:0;pointer-events:none;z-index:5;
  background:
    repeating-linear-gradient(0deg, rgba(0,0,0,0.30) 0px, rgba(0,0,0,0.30) 1px, transparent 1px, transparent 3px),
    radial-gradient(ellipse at center, transparent 55%, rgba(0,0,0,0.50) 100%);
}

/* HUD */
#hud{position:absolute;inset:0;pointer-events:none;}
.controls{
  position:absolute;left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom, 0px));
  display:flex;gap:8px;flex-wrap:wrap;pointer-events:auto;max-width:100%;
}
.ctl{
  font-family:inherit;font-size:10px;letter-spacing:2px;color:var(--ink-dim);
  background:rgba(5,5,5,.5);border:1px solid var(--line);border-radius:0;
  padding:12px 10px;cursor:pointer;min-height:44px;min-width:44px;
}
.ctl:hover{color:#000;background:var(--ink);border-color:var(--ink);}

/* rare message */
#msg{
  position:absolute;left:50%;top:40%;transform:translate(-50%,-50%);
  text-align:center;opacity:0;transition:opacity .6s ease;max-width:80%;
}
#msg .pennant{font-size:10px;letter-spacing:3px;color:var(--pkg);opacity:.7;margin-bottom:6px;}
#msg .text{font-size:15px;letter-spacing:1px;line-height:1.5;color:var(--ink);}

/* start overlay */
#overlay{
  position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;
  background:rgba(0,0,0,.78);pointer-events:auto;transition:opacity .5s ease;
  padding:24px;
}
#overlay.hidden{opacity:0;pointer-events:none;}
.brand{font-size:15px;letter-spacing:8px;color:var(--ink);margin-bottom:14px;}
.rule{width:46px;height:1px;background:var(--line);margin:0 0 14px;}
.phrase{font-size:13px;letter-spacing:1px;color:var(--ink);opacity:.85;margin-bottom:6px;line-height:1.6;max-width:300px;}
.phrase.sub{font-size:11px;letter-spacing:1px;color:var(--ink-dim);opacity:1;margin-bottom:10px;}
.returnline{font-size:10px;letter-spacing:2px;color:var(--ink-dim);margin-bottom:22px;min-height:12px;line-height:1.6;}

/* callsign */
.callsign{display:flex;flex-direction:column;align-items:center;gap:7px;margin-bottom:22px;pointer-events:auto;}
.callsign label{font-size:9px;letter-spacing:3px;color:var(--ink-dim);}
.callsign label span{opacity:.6;}
#callsignInput{
  font-family:inherit;font-size:14px;letter-spacing:4px;text-align:center;text-transform:uppercase;
  color:var(--pkg);background:rgba(5,5,5,.6);border:1px solid var(--line);border-radius:0;
  padding:9px 10px;width:170px;caret-color:var(--pkg);
}
#callsignInput:focus{outline:none;border-color:var(--pkg);}
#callsignInput::placeholder{color:var(--ink-dim);letter-spacing:3px;opacity:.5;}

/* sensitivity */
.senslabel{font-size:9px;letter-spacing:3px;color:var(--ink-dim);margin-bottom:8px;}
.sens{display:flex;gap:6px;margin-bottom:26px;pointer-events:auto;}
.studio{font-size:9px;letter-spacing:5px;text-indent:5px;color:var(--ink-dim);margin-bottom:10px;}
.returnhome{
  margin-top:18px;pointer-events:auto;display:inline-flex;align-items:center;justify-content:center;
  font-size:10px;letter-spacing:2px;color:var(--ink-dim);text-decoration:none;
  border:1px solid transparent;padding:12px 14px;min-height:44px;min-width:44px;
}
.returnhome:hover,.returnhome:focus-visible{color:var(--ink);border-color:var(--ink-dim);}
.linkbtn{text-decoration:none;display:flex;align-items:center;justify-content:center;}
#startBtn{
  font-family:inherit;font-size:12px;letter-spacing:3px;color:#000000;
  background:var(--ink);border:1px solid var(--line);border-radius:0;
  padding:14px 26px;cursor:pointer;min-height:44px;min-width:230px;
  margin-top:6px;pointer-events:auto;
}
#startBtn:hover,#startBtn:focus-visible{background:#000000;color:var(--ink);}
.sens-opt{
  font-family:inherit;background:transparent;cursor:pointer;

  font-size:11px;letter-spacing:2px;color:var(--ink-dim);
  border:1px solid var(--line);border-radius:0;padding:12px 14px;cursor:pointer;min-height:44px;min-width:44px;
}
.sens-opt.on{color:#000000;background:var(--pkg);border-color:var(--pkg);}

/* pause & end overlays */
.modal{
  position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;
  background:rgba(0,0,0,.82);pointer-events:auto;transition:opacity .3s ease;
  padding:24px;
}
.modal.hidden{opacity:0;pointer-events:none;}
.menu{display:flex;flex-direction:column;gap:10px;margin-top:20px;}
.mbtn{
  font-family:inherit;font-size:12px;letter-spacing:3px;color:var(--ink);
  background:rgba(5,5,5,.6);border:1px solid var(--line);border-radius:0;
  padding:12px 22px;cursor:pointer;min-width:230px;min-height:44px;
}
.mbtn:hover{border-color:var(--pkg);}
.mbtn.warm{color:var(--pkg);border-color:#FFFFFF;}
.endstats{margin-top:16px;}
.score-line{font-size:24px;letter-spacing:5px;color:var(--ink);margin-bottom:8px;}
.best-line{font-size:12px;letter-spacing:3px;color:var(--ink-dim);margin-bottom:8px;}
.newbest-line{font-size:12px;letter-spacing:4px;color:var(--pkg);display:none;animation:pulse 2s ease-in-out infinite;}

.hint{font-size:11px;letter-spacing:3px;color:var(--ink-dim);animation:pulse 2.4s ease-in-out infinite;}
@keyframes pulse{0%,100%{opacity:.3;}50%{opacity:.8;}}
@media (prefers-reduced-motion: reduce){ .hint{animation:none;opacity:.6;} }


:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}

/* screen-reader-only content */
.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}
/* reduced motion: no nonessential animation */
@media (prefers-reduced-motion: reduce){
  .newbest-line{animation:none;}
  #overlay,.modal,#msg{transition:none;}
}

/* short screens (e.g. 320x568): tighten vertical rhythm so the start screen fits */
@media (max-height:600px){
  #overlay{padding:12px;}
  #overlay .rule{margin:10px 0;}
  #overlay .phrase{margin-bottom:6px;}
  .callsign{margin-bottom:12px;}
  .returnhome{margin-top:8px;}
  #startBtn{margin-top:2px;padding:11px 22px;}
  .hint{margin-top:8px;}
}

/* Static control-support line on the start screen (presentation only) */
.hint-controls{animation:none;opacity:.72;margin-top:14px;font-size:10px;letter-spacing:2.4px;
  max-width:320px;line-height:1.7;overflow-wrap:break-word;}