:root{--bg:#061220;--panel:#0d2038;--text:#e8f1ff;--border:#24476f}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at top,#0f2745,#061220);color:var(--text);font-family:Segoe UI,Tahoma,sans-serif}
.app{max-width:980px;margin:0 auto;padding:1rem;display:grid;gap:1rem}
.panel{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:.8rem}
.controls{display:flex;gap:.6rem;flex-wrap:wrap;align-items:center}
button,input{font:inherit}
canvas{width:100%;height:auto;background:#091a2f;border:1px solid var(--border);border-radius:10px}
#status{min-height:1.2rem}