:root{
  --bg:#0a0a0f;
  --panel:#15151d;
  --case:#26262c;
  --ink:#e8e8f0;
  --dim:#8a8a9a;
  --accent:#ff2e63;
  --green:#2fd67a;
  --spec-red:#d80000;
  --spec-yel:#d8d800;
  --spec-grn:#00d800;
  --spec-cyan:#00d8d8;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:
    radial-gradient(circle at 20% -10%, #1a1024 0%, transparent 45%),
    radial-gradient(circle at 90% 110%, #101a24 0%, transparent 50%),
    var(--bg);
  color:var(--ink);
  font-family:'IBM Plex Mono',monospace;
  min-height:100vh;
  -webkit-tap-highlight-color:transparent;
}
#rainbow-top{
  height:6px;
  background:linear-gradient(90deg,
    var(--spec-red) 0 25%, var(--spec-yel) 25% 50%,
    var(--spec-grn) 50% 75%, var(--spec-cyan) 75% 100%);
}
header{
  text-align:center;
  padding:22px 14px 6px;
}
header h1{
  font-family:'VT323',monospace;
  font-size:clamp(42px,8vw,74px);
  margin:0;
  line-height:0.9;
  letter-spacing:2px;
  color:#fff;
  text-shadow:0 0 18px rgba(255,46,99,.5);
}
header h1 .berry{filter:drop-shadow(0 0 8px #fff);}
.subtitle{
  color:var(--dim);
  margin:6px 0 0;
  font-size:clamp(12px,2.6vw,15px);
}
.subtitle em{color:var(--accent);font-style:normal;}
main{
  max-width:820px;
  margin:0 auto;
  padding:14px;
}

/* ---- machine / display ---- */
#machine{display:flex;flex-direction:column;align-items:center;}
#bezel{
  position:relative;
  background:linear-gradient(160deg,#33333a,#1c1c22);
  border-radius:14px;
  padding:14px;
  box-shadow:0 14px 40px rgba(0,0,0,.6), inset 0 1px 0 rgba(255,255,255,.06);
  border:1px solid #000;
  width:100%;
  max-width:720px;
}
#canvas{
  width:100%;
  height:auto;
  display:block;
  border-radius:4px;
  image-rendering:pixelated;
  background:#000;
}
#scanlines{
  position:absolute;inset:14px;border-radius:4px;pointer-events:none;
  opacity:0;transition:opacity .2s;
  background:repeating-linear-gradient(0deg,rgba(0,0,0,.35) 0 1px,transparent 1px 3px);
}
#scanlines.on{opacity:1;}
#statusbar{
  display:flex;gap:16px;flex-wrap:wrap;justify-content:center;
  margin-top:10px;font-size:13px;color:var(--dim);
  font-family:'VT323',monospace;letter-spacing:1px;
}
#statusbar .run{color:var(--green);}
#statusbar .pause{color:var(--accent);}
#st-model{color:var(--spec-cyan);}

/* ---- controls ---- */
#controls{
  display:flex;gap:8px;flex-wrap:wrap;justify-content:center;
  margin:18px 0;
}
.rk{
  font-family:'IBM Plex Mono',monospace;
  font-weight:600;
  background:linear-gradient(180deg,#3a3a42,#22222a);
  color:var(--ink);
  border:1px solid #000;
  border-radius:8px;
  padding:9px 13px;
  font-size:13px;
  cursor:pointer;
  box-shadow:0 3px 0 #000,inset 0 1px 0 rgba(255,255,255,.08);
  transition:transform .05s, box-shadow .05s, background .15s;
}
.rk:active{transform:translateY(3px);box-shadow:0 0 0 #000;}
.rk:hover{background:linear-gradient(180deg,#45454e,#2a2a32);}
.rk.active{background:linear-gradient(180deg,var(--accent),#a01a44);color:#fff;}
.speedwrap{display:flex;align-items:center;gap:6px;color:var(--dim);font-size:12px;}
select.rk{padding:8px 6px;}

/* ---- dropzone ---- */
#dropzone{
  border:2px dashed #444455;
  border-radius:12px;
  padding:26px 16px;
  text-align:center;
  cursor:pointer;
  transition:border-color .2s,background .2s;
  background:rgba(255,255,255,.02);
}
#dropzone:hover{border-color:var(--accent);}
#dropzone.drag{border-color:var(--green);background:rgba(47,214,122,.08);}
#dropzone strong{color:#fff;}
#dropzone .link{color:var(--accent);text-decoration:underline;}
#dropzone small{color:var(--dim);display:block;margin-top:8px;line-height:1.5;}
#dropzone small b{color:var(--spec-yel);}

/* ---- toast ---- */
#toast{
  position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);
  background:#1a1a24;border:1px solid var(--accent);color:#fff;
  padding:12px 18px;border-radius:10px;font-size:13px;
  opacity:0;pointer-events:none;transition:.25s;z-index:50;
  box-shadow:0 8px 30px rgba(0,0,0,.5);
  max-width:90vw;text-align:center;
}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ---- debug ---- */
#debug{
  margin-top:14px;background:#0c0c12;border:1px solid #2a2a36;
  border-radius:10px;padding:14px;
}
#debug h3{margin:0 0 8px;font-family:'VT323',monospace;font-size:22px;color:var(--spec-cyan);}
#regdump{margin:0;font-size:13px;line-height:1.55;color:var(--green);white-space:pre;overflow:auto;}
.hidden{display:none;}

/* ---- keyboard ---- */
#keyboard{
  margin-top:22px;
  background:linear-gradient(160deg,#2a2a30,#161619);
  padding:12px;border-radius:14px;
  border:1px solid #000;
  box-shadow:0 10px 30px rgba(0,0,0,.5);
}
.kb-row{display:flex;gap:5px;justify-content:center;margin-bottom:5px;}
.key{
  flex:1;
  min-width:0;
  background:linear-gradient(180deg,#4a4a52,#2a2a30);
  color:#e8e8f0;
  border:1px solid #000;
  border-radius:6px;
  padding:11px 2px;
  font-family:'IBM Plex Mono',monospace;
  font-size:clamp(11px,2.6vw,15px);
  font-weight:600;
  cursor:pointer;
  box-shadow:0 3px 0 #000,inset 0 1px 0 rgba(255,255,255,.1);
  transition:transform .04s,box-shadow .04s;
  user-select:none;
}
.key.wide{font-size:clamp(9px,2.2vw,12px);}
.key:active,.key.down{
  transform:translateY(3px);
  box-shadow:0 0 0 #000;
  background:linear-gradient(180deg,var(--spec-red),#8a0000);
  color:#fff;
}

/* ---- footer ---- */
footer{
  text-align:center;padding:26px 14px 40px;color:var(--dim);
  font-size:12px;line-height:1.6;
}
footer a{color:var(--accent);text-decoration:none;border-bottom:1px dotted var(--accent);}
footer a:hover{color:#fff;}

@media (max-width:560px){
  .rk{padding:8px 10px;font-size:12px;}
  #keyboard{padding:8px;}
  .kb-row{gap:3px;}
  .key{padding:9px 1px;}
}