:root{
  --green:#33ff77; --amber:#ffb000; --bg:#070707; --panel:#111;
}
*{ box-sizing:border-box; }
html,body{ margin:0; }
body{
  background:
    radial-gradient(circle at 50% -10%, #17251a 0%, #070707 55%),
    #070707;
  color:var(--green); font-family:"JetBrains Mono",monospace; min-height:100vh;
  display:flex; flex-direction:column; align-items:center; padding:14px 12px 40px;
}
header{ text-align:center; }
h1{
  font-family:"VT323",monospace; font-size:2.6rem; letter-spacing:2px; margin:4px 0 0;
  color:var(--green); text-shadow:0 0 10px rgba(51,255,119,.7), 0 0 24px rgba(51,255,119,.25);
}
.sub{ color:var(--amber); font-size:.72rem; opacity:.85; margin:2px 0 14px; }
.sub .raster{
  color:#33ff77; font-weight:700;
  text-shadow:0 0 6px rgba(51,255,119,.6);
  animation:pulse 1.6s ease-in-out infinite;
}
@keyframes pulse{ 0%,100%{ opacity:.65; } 50%{ opacity:1; } }

#drop{
  border:2px dashed #2a6b3f; border-radius:12px; padding:14px 16px; width:100%;
  max-width:660px; text-align:center; font-size:.78rem; cursor:pointer;
  background:rgba(20,45,25,.35); transition:.15s; margin-bottom:16px; line-height:1.5;
}
#drop.hot{ background:rgba(35,80,45,.6); border-color:var(--green); box-shadow:0 0 18px rgba(51,255,119,.5); }
#drop b{ color:var(--green); }
#drop small{ color:var(--amber); display:block; margin-top:6px; opacity:.8; font-size:.68rem; }
#drop em{ color:var(--green); font-style:normal; }

.crt{
  position:relative; padding:20px; border-radius:26px;
  background:linear-gradient(#2a2a2a,#101010); max-width:100%;
  box-shadow:0 0 0 3px #000, 0 10px 40px rgba(0,0,0,.8), inset 0 0 30px rgba(0,0,0,.6);
}
canvas{
  display:block; image-rendering:pixelated; background:#000; border-radius:8px;
  width:min(720px,86vw); height:auto; outline:none;
}
canvas:focus{ box-shadow:0 0 0 2px rgba(51,255,119,.6); }
.scan{
  pointer-events:none; position:absolute; inset:20px; border-radius:8px;
  background:repeating-linear-gradient(rgba(0,0,0,0) 0 2px, rgba(0,0,0,.16) 2px 4px);
  mix-blend-mode:multiply;
}
.glow{
  pointer-events:none; position:absolute; inset:20px; border-radius:8px;
  box-shadow:inset 0 0 60px rgba(51,255,119,.12);
}

#stat{ font-size:.7rem; color:var(--amber); min-height:1.1em; margin:12px 0 2px; text-align:center; }

#controls{ display:flex; flex-wrap:wrap; gap:8px; justify-content:center; margin:8px 0; max-width:740px; }
button{
  background:#101810; color:var(--green); border:1px solid #2a6b3f; border-radius:7px;
  padding:9px 14px; font-family:"JetBrains Mono",monospace; font-size:.74rem; font-weight:700;
  cursor:pointer; transition:.12s;
}
button:hover{ background:#1c3320; }
button.on{ background:var(--amber); color:#101; border-color:var(--amber); box-shadow:0 0 10px rgba(255,176,0,.4); }

#dbg{
  display:none; background:#000; border:1px solid #2a3b2a; border-radius:8px; padding:12px;
  font-size:.66rem; line-height:1.6; max-width:740px; width:100%; color:var(--amber);
  white-space:pre-wrap; word-break:break-word; margin-top:12px;
}
#dbg.show{ display:block; }

#kbdmap{
  display:none; max-width:740px; width:100%; margin-top:12px; font-size:.6rem; color:var(--green);
}
#kbdmap.show{ display:block; }
#kbdmap table{ border-collapse:collapse; width:100%; }
#kbdmap td,#kbdmap th{ border:1px solid #234; padding:3px 5px; text-align:center; }
#kbdmap th{ color:var(--amber); }
#kbdmap td.hit{ background:var(--green); color:#000; font-weight:700; }

footer{ margin-top:22px; font-size:.68rem; opacity:.65; text-align:center; line-height:1.6; }
footer a{ color:var(--amber); }

@media(max-width:520px){
  h1{ font-size:2rem; }
  #controls{ gap:6px; }
  button{ padding:8px 10px; font-size:.68rem; }
}