:root{
  --bg:#0a0a12;
  --bg2:#12122a;
  --panel:#15152e;
  --blue:#00d4ff;
  --mag:#ff2e97;
  --green:#39ff14;
  --dim:#7b8cb0;
  --line:rgba(120,140,200,0.14);
}
*{box-sizing:border-box;}
body{
  margin:0;
  font-family:'JetBrains Mono',monospace;
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(255,46,151,0.08), transparent),
    radial-gradient(1000px 700px at 90% 10%, rgba(0,212,255,0.08), transparent),
    linear-gradient(180deg,#0a0a12,#07070f);
  color:#dbe6ff;
  min-height:100vh;
}
.app{max-width:1100px;margin:0 auto;padding:16px;position:relative;}
.app.crt::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:50;
  background:repeating-linear-gradient(0deg,rgba(0,0,0,0.16) 0px,rgba(0,0,0,0.16) 1px,transparent 2px,transparent 3px);
  mix-blend-mode:multiply;
}

/* Header */
.header{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;padding:14px 0 18px;}
.hdr-left{display:flex;align-items:center;gap:16px;}
.title{
  font-family:'Press Start 2P',monospace;
  font-size:clamp(14px,3.2vw,24px);
  margin:0;color:var(--blue);
  text-shadow:0 0 12px rgba(0,212,255,0.6),3px 3px 0 var(--mag);
  letter-spacing:1px;
}
.subtitle{color:var(--dim);font-size:12px;margin-top:6px;font-weight:300;}
.eq{display:flex;align-items:flex-end;gap:3px;height:34px;}
.eq span{width:5px;background:linear-gradient(var(--green),var(--blue));border-radius:1px;
  animation:eq 0.9s ease-in-out infinite alternate;height:60%;box-shadow:0 0 6px rgba(57,255,20,0.5);}
@keyframes eq{from{height:20%;}to{height:100%;}}
.hdr-right{display:flex;align-items:center;gap:10px;}
.badge16{font-family:'Press Start 2P';font-size:9px;color:var(--mag);border:1px solid var(--mag);
  padding:5px 7px;border-radius:3px;box-shadow:0 0 8px rgba(255,46,151,0.4);}
.crtbtn,.tab,.deckbtn,select,button{font-family:'JetBrains Mono';}
.crtbtn{background:transparent;color:var(--dim);border:1px solid var(--line);
  padding:6px 10px;border-radius:4px;cursor:pointer;font-size:11px;}
.crtbtn.on{color:var(--green);border-color:var(--green);box-shadow:0 0 8px rgba(57,255,20,0.3);}

/* Tabs */
.tabs{display:flex;gap:8px;margin-bottom:18px;}
.tab{flex:1;background:var(--panel);color:var(--dim);border:1px solid var(--line);
  padding:12px;border-radius:6px;cursor:pointer;font-weight:700;font-size:13px;transition:0.15s;}
.tab:hover{color:#fff;}
.tab.active{color:var(--bg);background:var(--blue);border-color:var(--blue);
  box-shadow:0 0 16px rgba(0,212,255,0.5);}

.tabpanel{animation:fade 0.3s ease;}
@keyframes fade{from{opacity:0;transform:translateY(6px);}to{opacity:1;transform:none;}}

/* Dropzone */
.dropzone{border:2px dashed var(--line);border-radius:10px;padding:38px 18px;text-align:center;
  cursor:pointer;background:rgba(0,212,255,0.02);transition:0.2s;}
.dropzone:hover{border-color:var(--blue);background:rgba(0,212,255,0.05);}
.dropzone.drag{border-color:var(--green);background:rgba(57,255,20,0.08);box-shadow:inset 0 0 30px rgba(57,255,20,0.15);}
.dz-big{font-size:clamp(14px,3vw,20px);font-weight:800;color:var(--blue);letter-spacing:1px;}
.dz-sub{color:var(--dim);font-size:11px;margin-top:8px;font-weight:300;}

.statusbar{margin-top:12px;padding:10px 14px;background:rgba(57,255,20,0.06);border-left:3px solid var(--green);
  border-radius:4px;font-size:12px;color:var(--green);}
.errbar{margin-top:12px;padding:10px 14px;background:rgba(255,46,151,0.08);border-left:3px solid var(--mag);
  border-radius:4px;font-size:12px;color:#ffb3d4;}

/* Info grid */
.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px;}
@media(max-width:640px){.info-grid{grid-template-columns:1fr;}}
.info-card{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:14px 16px;}
.info-card h3{margin:0 0 10px;font-size:13px;color:var(--blue);}
.inforow{display:flex;justify-content:space-between;gap:12px;padding:4px 0;border-bottom:1px dotted var(--line);font-size:12px;}
.ir-k{color:var(--dim);}
.ir-v{color:#eaf2ff;text-align:right;word-break:break-word;}

/* Deck */
.deck{margin-top:16px;background:linear-gradient(180deg,#1a1a30,#101024);border:1px solid var(--line);
  border-radius:10px;padding:16px;}
.deck-controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.deckbtn{width:46px;height:46px;border-radius:8px;background:#0c0c1c;color:#cfe0ff;border:1px solid var(--line);
  font-size:18px;cursor:pointer;transition:0.15s;}
.deckbtn:hover{border-color:var(--blue);color:var(--blue);}
.deckbtn.playbtn{color:var(--green);border-color:var(--green);box-shadow:0 0 10px rgba(57,255,20,0.3);}
.deckbtn.on{color:var(--mag);border-color:var(--mag);box-shadow:0 0 10px rgba(255,46,151,0.35);}
.time{margin-left:auto;font-size:13px;color:var(--blue);}
.seek{width:100%;margin:14px 0 6px;accent-color:var(--blue);}
.volrow{display:flex;align-items:center;gap:10px;}
.volrow input{flex:1;accent-color:var(--green);}
.core-note{margin-top:10px;font-size:10px;color:var(--dim);font-style:italic;}

/* Visualizer */
.viz{margin-top:16px;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:14px 16px;}
.viz h3{margin:0 0 12px;font-size:13px;color:var(--mag);}
.viz-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:8px;}
.chan{display:flex;flex-direction:column;align-items:center;gap:6px;padding:10px 6px;border-radius:6px;
  background:#0c0c1c;border:1px solid var(--line);transition:0.1s;}
.chan-lbl{font-size:10px;color:var(--dim);}
.chan-led{width:14px;height:14px;border-radius:50%;background:#1a2030;border:1px solid var(--line);}
.chan.lit{border-color:var(--blue);}
.chan.lit .chan-led{background:var(--blue);box-shadow:0 0 12px var(--blue);}
.chan.lit .chan-lbl{color:var(--blue);}
.chan.sn.lit{border-color:var(--green);}
.chan.sn.lit .chan-led{background:var(--green);box-shadow:0 0 12px var(--green);}
.chan.sn.lit .chan-lbl{color:var(--green);}

.empty-hint{margin-top:20px;text-align:center;color:var(--dim);font-size:13px;line-height:1.7;}
.empty-hint .dim{color:#556;font-size:11px;}

/* Reference */
.legend{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:14px 16px;margin-bottom:14px;}
.legend-note{font-size:12px;line-height:1.6;margin-bottom:8px;}
.legend-note.dim{color:var(--dim);font-size:11px;}
.legend code{background:#0c0c1c;padding:2px 6px;border-radius:3px;color:var(--blue);border:1px solid var(--line);}
.legend-badges{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap;}
.lb,.rc-badge{font-size:9px;font-weight:700;border:1px solid;padding:3px 7px;border-radius:3px;letter-spacing:0.5px;}

.search{width:100%;padding:12px 14px;background:#0c0c1c;border:1px solid var(--line);border-radius:6px;
  color:#eaf2ff;font-family:'JetBrains Mono';font-size:13px;margin-bottom:14px;}
.search:focus{outline:none;border-color:var(--blue);box-shadow:0 0 10px rgba(0,212,255,0.25);}

.reg-list{display:flex;flex-direction:column;gap:8px;}
.regcard{background:var(--panel);border:1px solid var(--line);border-left:4px solid;border-radius:6px;overflow:hidden;}
.regcard-head{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;cursor:pointer;gap:10px;}
.regcard-head:hover{background:rgba(255,255,255,0.02);}
.rc-left{display:flex;align-items:center;gap:12px;min-width:0;flex-wrap:wrap;}
.rc-addr{font-weight:800;color:var(--green);font-size:14px;}
.rc-name{color:#eaf2ff;font-size:13px;}
.rc-right{display:flex;align-items:center;gap:10px;}
.rc-arrow{color:var(--dim);transition:0.2s;font-size:11px;}
.regcard-body{padding:0 16px 18px;border-top:1px solid var(--line);}
.rc-desc{color:#c4d2f0;font-size:12px;line-height:1.6;}
.bytelabel{font-size:10px;color:var(--dim);margin:14px 0 6px;text-transform:uppercase;letter-spacing:1px;}
.warn{background:rgba(255,46,151,0.1);border:1px solid var(--mag);border-radius:6px;padding:10px 12px;
  font-size:12px;color:#ffc4dd;margin-top:10px;line-height:1.6;}

/* Extended register breakdown ($B0 etc.) */
.rc-extra{margin-top:14px;background:#0c0c1c;border:1px solid var(--line);border-radius:6px;padding:12px 14px;}
.rc-extra-h{margin:12px 0 6px;font-size:11px;color:var(--mag);text-transform:uppercase;letter-spacing:0.5px;}
.rc-extra-block:first-child .rc-extra-h{margin-top:0;}
.rc-extra-p{margin:0 0 6px;font-size:12px;line-height:1.6;color:#c4d2f0;}
.rc-extra-list{margin:6px 0 4px;padding-left:18px;}
.rc-extra-list li{font-size:12px;line-height:1.6;color:#c4d2f0;margin-bottom:6px;}
.rc-extra-list li::marker{color:var(--green);}

/* Bit layout */
.bitrow{display:grid;grid-template-columns:repeat(8,1fr);gap:4px;}
.bitwrap{display:flex;flex-direction:column;align-items:center;gap:3px;}
.bitnum{font-size:8px;color:#455;}
.bitcell{width:100%;min-height:34px;display:flex;align-items:center;justify-content:center;
  border:1px solid;border-radius:4px;font-size:9px;text-align:center;padding:2px;line-height:1.1;
  transition:0.1s;word-break:break-all;}

.interactive{margin-top:16px;background:#0c0c1c;border:1px solid var(--line);border-radius:6px;padding:12px;}
.itag{font-size:10px;color:var(--green);margin-bottom:10px;letter-spacing:1px;}
.decode-row{display:flex;align-items:center;gap:12px;margin-top:12px;flex-wrap:wrap;}
.hexval{font-size:18px;font-weight:800;color:var(--green);text-shadow:0 0 8px rgba(57,255,20,0.4);}
.binval{font-size:12px;color:var(--dim);}
.decode{font-size:12px;color:var(--blue);flex:1;min-width:150px;}

/* Tables */
.reftable,.opmap{margin-top:16px;overflow-x:auto;}
.reftable-title{font-size:10px;color:var(--mag);margin-bottom:6px;text-transform:uppercase;letter-spacing:1px;}
table{width:100%;border-collapse:collapse;font-size:11px;}
th,td{padding:6px 10px;text-align:left;border:1px solid var(--line);}
th{background:#0c0c1c;color:var(--blue);font-weight:700;}
td{color:#c4d2f0;}
td.mono{color:var(--green);font-weight:700;}

/* Calculator */
.calc{margin-top:22px;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:16px;}
.calc h3{margin:0 0 6px;font-size:14px;color:var(--blue);}
.calc-hint{font-size:11px;color:var(--dim);margin:0 0 14px;}
.calc-controls{display:flex;gap:16px;align-items:flex-end;flex-wrap:wrap;margin-bottom:14px;}
.calc-controls label{display:flex;flex-direction:column;gap:5px;font-size:10px;color:var(--dim);text-transform:uppercase;}
.calc-controls select{background:#0c0c1c;color:#eaf2ff;border:1px solid var(--line);border-radius:5px;padding:8px 10px;font-size:13px;}
.calc-bank{font-size:11px;color:var(--green);border:1px solid var(--green);padding:8px 10px;border-radius:5px;
  box-shadow:0 0 8px rgba(57,255,20,0.2);}
.calc-results{display:grid;grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:8px;}
.calc-chip{background:#0c0c1c;border:1px solid var(--line);border-radius:6px;padding:10px;text-align:center;}
.cc-name{display:block;font-size:10px;color:var(--dim);}
.cc-addr{display:block;font-size:16px;font-weight:800;color:var(--green);margin-top:4px;}

/* Footer */
.footer{margin-top:30px;padding:18px 0;border-top:1px solid var(--line);display:flex;
  justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;font-size:11px;color:var(--dim);}
.footer a{color:var(--mag);text-decoration:none;border:1px solid var(--mag);padding:5px 12px;border-radius:4px;
  transition:0.15s;}
.footer a:hover{background:var(--mag);color:var(--bg);box-shadow:0 0 12px rgba(255,46,151,0.4);}