:root{
  --bg:#0b0f1a;
  --panel:#121a2b;
  --text:#e9eefc;
  --muted:#9aa7c7;
  --accent:#7aa2ff;
  --good:#56f2c3;
  --warn:#ffcc66;
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background:var(--bg);
  color:var(--text);
}

header{
  padding:18px 22px;
  border-bottom:1px solid rgba(255,255,255,0.08);
}
h1{margin:0; font-size:22px}
header p{margin:6px 0 0; color:var(--muted)}

.controls{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
  padding:12px 22px;
  background:var(--panel);
  border-bottom:1px solid rgba(255,255,255,0.08);
}

label{
  display:flex;
  gap:8px;
  align-items:center;
  color:var(--muted);
  font-size:14px;
}
select, input{
  background:#0f1526;
  color:var(--text);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:10px;
  padding:8px 10px;
  outline:none;
}

button{
  background:var(--accent);
  color:#0b0f1a;
  border:none;
  border-radius:12px;
  padding:10px 14px;
  cursor:pointer;
  font-weight:700;
}
button:hover{filter:brightness(1.05)}
button#resetBtn{background:#26314e; color:var(--text)}

.info{
  margin-left:auto;
  display:flex;
  gap:18px;
  color:var(--muted);
  font-size:14px;
}
.info span{color:var(--good); font-weight:700}

main{
  padding:18px 22px 28px;
  display:flex;
  justify-content:center;
}
canvas{
  border-radius:18px;
  background:linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border:1px solid rgba(255,255,255,0.08);
  box-shadow:0 16px 40px rgba(0,0,0,0.45);
}

footer{
  padding:12px 22px;
  color:var(--muted);
  font-size:12px;
  border-top:1px solid rgba(255,255,255,0.06);
}