:root{
  --bg:#0b1020;
  --panel:#0f1724;
  --muted:#9aa4b2;
  --accent:#00e5ff;
  --glass: rgba(255,255,255,0.04);
  --card-radius:14px;
  font-size:16px;
  color-scheme: dark;
}

*{box-sizing:border-box}
html,body,#gameCanvas{height:100%}
body{
  margin:0;
  min-height:100vh;
  font-family:Inter, ui-sans-serif, system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: radial-gradient(1200px 600px at 10% 10%, rgba(0,229,255,0.04), transparent),
              radial-gradient(900px 400px at 90% 90%, rgba(255,0,200,0.02), transparent),
              var(--bg);
  color:#dfe8f2;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  padding:28px;
  display:flex;
  align-items:flex-start;
  justify-content:center;
}

.app{
  width:1200px;
  max-width:calc(100vw - 40px);
  display:grid;
  grid-template-columns: 1fr 360px;
  gap:20px;
  align-items:start;
}

.app__header{
  grid-column:1 / 2;
  margin-bottom:6px;
}

.title{
  margin:0 0 8px;
  font-size:22px;
  letter-spacing:-0.02em;
}

.subtitle{
  margin:0;
  color:var(--muted);
  font-size:13px;
}

.canvas-wrap{
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius: var(--card-radius);
  box-shadow: 0 10px 30px rgba(3,8,20,0.5);
  padding: 10px;
  position:relative;
  min-height:640px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,0.03);
}

canvas{
  width:100%;
  height:640px;
  display:block;
  border-radius:12px;
  background-image: linear-gradient(180deg, rgba(255,255,255,0.01), transparent);
  cursor:crosshair;
  image-rendering: optimizeQuality;
}

/* Mobile joystick overlay */
.overlay-controls{
  position:absolute;
  bottom:18px;
  left:18px;
  width:110px;
  height:110px;
  display:none;
  align-items:center;
  justify-content:center;
  pointer-events:none;
}
.joy-base{
  width:86px;
  height:86px;
  background:linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border-radius:50%;
  border:1px solid rgba(255,255,255,0.04);
  pointer-events:auto;
  display:flex;
  align-items:center;
  justify-content:center;
}
.joy-stick{
  width:34px;
  height:34px;
  border-radius:50%;
  background:linear-gradient(180deg,#ffffff11,#00000011);
  box-shadow:0 6px 18px rgba(0,0,0,0.6), inset 0 -6px 12px rgba(255,255,255,0.02);
}

/* Right column UI */
.ui{
  grid-column:2 / 3;
}
.panel{
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius:12px;
  padding:18px;
  border:1px solid rgba(255,255,255,0.03);
  box-shadow: 0 8px 24px rgba(2,6,20,0.5);
}
.controls-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.btn{
  background:transparent;
  border:1px solid rgba(255,255,255,0.06);
  color:var(--muted);
  padding:8px 10px;
  border-radius:10px;
  cursor:pointer;
  font-weight:600;
  font-size:14px;
}
.btn.primary{
  background:linear-gradient(90deg,var(--accent),#8a00ff);
  color:#02101b;
  border:none;
  box-shadow:0 8px 18px rgba(0,229,255,0.06), inset 0 -4px 14px rgba(0,0,0,0.12);
}

.btn-check{display:inline-flex;align-items:center;gap:8px;padding:8px 10px;border-radius:10px;background:var(--glass);color:var(--muted);border:1px solid rgba(255,255,255,0.02)}

.sliders label{display:block;font-size:13px;color:var(--muted);margin:8px 0}
.sliders input[type="range"]{width:100%}
.sliders input[type="color"]{height:36px;width:56px;border-radius:8px;border:none;padding:0;margin-left:8px;vertical-align:middle}

.toggles{display:flex;gap:12px;margin-top:10px;color:var(--muted)}
.meta{display:flex;gap:12px;margin-top:12px;color:var(--muted);font-size:13px}
.footer-note{color:var(--muted);font-size:12px;margin-top:12px}

/* Responsive */
@media (max-width:1100px){
  .app{grid-template-columns:1fr; padding-bottom:24px}
  .ui{grid-column:1 / -1; margin-top:12px}
  .overlay-controls{display:flex}
  canvas{height:56vh}
}