:root{
  --bg:#0a0806;
  --amber:#f0a830;
  --amber-dim:#8a5f1e;
  --cabinet:#2a2018;
  --cabinet-hi:#3d2e20;
  --cabinet-lo:#160f0a;
  --panel:#14100c;
  --panel-line:#2c241a;
  --phos:#8fffb0;
  --text:#e6d8c2;
  --mono:'Space Mono', monospace;
  --disp:'VT323', monospace;
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  background:
    radial-gradient(1200px 600px at 50% -10%, #1a130c 0%, transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:var(--mono);
  min-height:100vh;
  overflow-x:hidden;
}
.glow-bg{
  position:fixed; inset:0; pointer-events:none; z-index:0;
  background:radial-gradient(600px 400px at 50% 40%, rgba(143,255,176,0.05), transparent 70%);
}

/* Masthead */
.masthead{ text-align:center; padding:26px 16px 6px; position:relative; z-index:1; }
.masthead h1{
  font-family:var(--disp);
  font-size:clamp(38px, 8vw, 82px);
  letter-spacing:6px;
  margin:0;
  color:var(--phos);
  text-shadow:0 0 12px rgba(143,255,176,0.5), 0 0 40px rgba(143,255,176,0.2);
  line-height:0.9;
}
.tagline{ font-size:12px; letter-spacing:2px; color:var(--amber-dim); text-transform:uppercase; margin:6px 0 0; }

/* Layout */
.layout{
  position:relative; z-index:1;
  display:grid;
  grid-template-columns: minmax(0,1.4fr) minmax(300px,0.8fr);
  gap:26px;
  max-width:1200px; margin:24px auto; padding:0 20px 60px;
  align-items:start;
}
@media (max-width:900px){
  .layout{ grid-template-columns:1fr; }
}

/* TV cabinet */
.tv-cabinet{
  background:linear-gradient(160deg, var(--cabinet-hi), var(--cabinet) 40%, var(--cabinet-lo));
  border-radius:26px;
  padding:22px 22px 16px;
  box-shadow:
    inset 0 2px 4px rgba(255,220,180,0.12),
    inset 0 -6px 20px rgba(0,0,0,0.6),
    0 30px 60px rgba(0,0,0,0.7);
  border:2px solid #1c140d;
}
.tv-brand{
  font-family:var(--disp); font-size:16px; letter-spacing:3px;
  color:var(--amber-dim); text-align:center; margin-bottom:12px;
}
.screen-bezel{
  background:linear-gradient(#0c0a08, #050403);
  border-radius:18px;
  padding:16px;
  box-shadow:inset 0 6px 20px rgba(0,0,0,0.9), inset 0 -2px 4px rgba(255,255,255,0.03);
}
.screen-frame{
  position:relative;
  aspect-ratio:4/3;
  border-radius:12px / 16px;
  overflow:hidden;
  background:#000;
  box-shadow:inset 0 0 60px rgba(0,0,0,0.9);
}
#canvas{
  width:100%; height:100%; display:block;
  border-radius:12px / 16px;
  filter:saturate(0.9) contrast(1.02);
}
.vignette{
  position:absolute; inset:0; pointer-events:none; border-radius:12px/16px;
  background:radial-gradient(120% 120% at 50% 50%, transparent 55%, rgba(0,0,0,0.55) 100%);
  box-shadow:inset 0 0 30px rgba(0,0,0,0.5);
}
.glass-glare{
  position:absolute; inset:0; pointer-events:none; border-radius:12px/16px;
  background:linear-gradient(135deg, rgba(255,255,255,0.09) 0%, transparent 30%);
  mix-blend-mode:screen;
}
/* faint scanline overlay + flicker */
.screen-frame::after{
  content:''; position:absolute; inset:0; pointer-events:none;
  background:repeating-linear-gradient(to bottom, rgba(0,0,0,0.12) 0 1px, transparent 1px 3px);
  animation:flicker 6s infinite steps(60);
  opacity:0.5;
}
@keyframes flicker{ 0%,100%{opacity:0.4} 3%{opacity:0.55} 6%{opacity:0.35} }

/* Dropzone */
.dropzone{
  position:absolute; inset:0; z-index:5;
  display:flex; align-items:center; justify-content:center;
  background:rgba(0,0,0,0.55);
  border:2px dashed rgba(143,255,176,0.35);
  border-radius:12px/16px; margin:14px;
  transition:.2s;
}
.dropzone.drag{ background:rgba(143,255,176,0.12); border-color:var(--phos); }
.dropzone.hidden{ display:none; }
.dz-inner{ text-align:center; }
.dz-icon{ font-size:46px; }
.dz-title{ font-family:var(--disp); font-size:26px; color:var(--phos); letter-spacing:1px; }
.dz-sub{ font-size:13px; color:var(--text); margin-top:6px; }
.link-btn{
  background:var(--phos); color:#04180b; border:none; padding:4px 12px; border-radius:6px;
  font-family:var(--mono); font-weight:700; cursor:pointer; letter-spacing:1px;
}
.link-btn:hover{ box-shadow:0 0 12px var(--phos); }

/* drifting hint */
.hint{
  position:absolute; z-index:6; left:50%; top:14%; transform:translateX(-50%);
  font-family:var(--disp); font-size:24px; color:#ffd; letter-spacing:2px;
  background:rgba(0,0,0,0.6); padding:6px 14px; border-radius:8px;
  opacity:0; transition:opacity .3s; pointer-events:none;
  text-shadow:0 0 8px rgba(255,255,180,0.6);
}
.hint.show{ opacity:1; }

/* under row */
.tv-underrow{
  display:flex; align-items:center; gap:16px; margin-top:14px; padding:0 6px;
}
.power-btn{
  width:44px; height:44px; border-radius:50%;
  background:radial-gradient(circle at 35% 30%, #4a3a28, #1a120b);
  border:2px solid #0c0805; cursor:pointer; color:#6b5236;
  box-shadow:inset 0 2px 3px rgba(255,220,180,0.2), 0 4px 8px rgba(0,0,0,0.6);
  transition:.15s;
}
.power-btn:hover{ color:var(--amber); }
.tv-cabinet.powered .power-btn{ color:var(--phos); box-shadow:inset 0 2px 3px rgba(255,220,180,0.2), 0 0 14px rgba(143,255,176,0.6); }
.power-glyph{ font-size:20px; }
.speaker-grille{
  flex:1; height:34px; border-radius:8px;
  background:repeating-linear-gradient(90deg, #1a130c 0 3px, #0d0906 3px 6px);
  box-shadow:inset 0 0 6px rgba(0,0,0,0.8);
}
.tuning-dial{
  width:38px; height:38px; border-radius:50%;
  background:radial-gradient(circle at 35% 30%, #5a4630, #201509);
  border:2px solid #0c0805;
  box-shadow:inset 0 2px 3px rgba(255,220,180,0.15);
}

/* Panel */
.panel{
  background:linear-gradient(180deg, var(--panel), #0d0a07);
  border:1px solid var(--panel-line);
  border-radius:16px;
  padding:18px;
  box-shadow:0 20px 40px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.03);
}
.panel-head{
  display:flex; align-items:center; gap:10px;
  font-family:var(--disp); font-size:26px; color:var(--phos);
  letter-spacing:2px; margin-bottom:14px;
  border-bottom:1px solid var(--panel-line); padding-bottom:10px;
}
.led{ width:12px; height:12px; border-radius:50%; background:#333; box-shadow:0 0 0 rgba(0,0,0,0); }
.led.off{ background:#2a2a2a; }
.led.ok{ background:#4dff88; box-shadow:0 0 10px #4dff88; }
.led.warn{ background:#ffb24d; box-shadow:0 0 10px #ffb24d; animation:blink 1s infinite; }
@keyframes blink{ 50%{opacity:0.4} }

/* playback buttons */
.playback{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:14px; }
.pb-btn{
  flex:1; min-width:70px;
  background:#1c1710; color:var(--text); border:1px solid #33291b;
  border-radius:8px; padding:9px 6px; font-family:var(--mono); font-weight:700;
  font-size:12px; letter-spacing:1px; cursor:pointer; transition:.15s;
}
.pb-btn:hover:not(:disabled){ background:#2a2216; color:var(--amber); border-color:var(--amber-dim); }
.pb-btn:disabled{ opacity:0.4; cursor:not-allowed; }
.pb-btn.toggle[data-on="1"]{ background:var(--phos); color:#04180b; border-color:var(--phos); box-shadow:0 0 10px rgba(143,255,176,0.5); }

/* presets */
.presets{ display:flex; flex-wrap:wrap; gap:6px; margin-bottom:16px; }
.preset-btn{
  background:transparent; border:1px solid var(--amber-dim); color:var(--amber);
  border-radius:20px; padding:5px 12px; font-family:var(--mono); font-size:11px;
  letter-spacing:1px; cursor:pointer; transition:.15s;
}
.preset-btn:hover{ background:var(--amber); color:#1a120b; box-shadow:0 0 12px rgba(240,168,48,0.5); }

/* knobs */
.knobs{ display:grid; grid-template-columns:repeat(4,1fr); gap:14px 10px; margin-bottom:18px; }
@media(max-width:900px){ .knobs{ grid-template-columns:repeat(4,1fr); } }
@media(max-width:480px){ .knobs{ grid-template-columns:repeat(3,1fr); } }
.knob-cell{ display:flex; flex-direction:column; align-items:center; gap:4px; }
.dial{
  --ang:0deg;
  width:48px; height:48px; border-radius:50%;
  background:radial-gradient(circle at 35% 28%, #4a3a28, #17100a 70%);
  border:2px solid #0c0805; position:relative; cursor:ns-resize;
  box-shadow:inset 0 2px 4px rgba(255,220,180,0.2), 0 4px 8px rgba(0,0,0,0.5);
  touch-action:none;
}
.dial::after{
  content:''; position:absolute; inset:0; border-radius:50%;
  background:conic-gradient(from -140deg, rgba(143,255,176,0.15) 0deg, transparent 270deg);
}
.dial-tick{
  position:absolute; left:50%; top:6px; width:3px; height:16px; border-radius:2px;
  background:var(--phos); transform-origin:50% 18px; transform:translateX(-50%) rotate(var(--ang));
  box-shadow:0 0 6px rgba(143,255,176,0.7);
}
.knob-label{ font-size:9px; letter-spacing:1px; color:var(--amber-dim); }
.knob-read{ font-family:var(--disp); font-size:16px; color:var(--phos); line-height:1; }
.knob-range{ width:100%; height:4px; accent-color:var(--amber); cursor:pointer; }

/* scope */
.scope-box{
  background:#020a05; border:1px solid #123c22; border-radius:10px; padding:10px;
}
.scope-label{ font-size:10px; letter-spacing:2px; color:#4dff88; margin-bottom:6px; text-transform:uppercase; }
#scope{ width:100%; display:block; border-radius:4px; background:#031007; }
.scope-legend{ display:flex; justify-content:space-between; font-size:8px; color:#3a7a52; margin-top:4px; }

/* footer */
.footer{
  position:relative; z-index:1;
  text-align:center; padding:20px; font-size:12px; color:var(--amber-dim);
  border-top:1px solid var(--panel-line);
}
.footer a{ color:var(--phos); text-decoration:none; margin-left:10px; }
.footer a:hover{ text-decoration:underline; text-shadow:0 0 8px var(--phos); }