:root{--bg:#0b0f1a;--panel:#121826;--muted:#8aa0b6;--text:#e8f0ff;--primary:#3b82f6}
*{box-sizing:border-box}html,body{height:100%}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif}
.container{max-width:1100px;margin:0 auto;padding:24px}
header{margin-bottom:8px}
h1{margin:0 0 6px;font-size:28px}
.subtitle{margin:0;color:var(--muted)}
.controls{display:flex;gap:12px;align-items:end;flex-wrap:wrap;background:var(--panel);padding:12px 12px;border-radius:10px;margin:18px 0}
.control{display:flex;flex-direction:column;gap:6px}
.control>span{font-size:12px;color:var(--muted)}
.control input,.control select{background:#0f1626;color:var(--text);border:1px solid #1f2937;border-radius:8px;padding:8px 10px;min-width:220px}
.primary{background:var(--primary);color:white;border:none;border-radius:8px;padding:10px 14px;cursor:pointer}
.primary:hover{filter:brightness(1.05)}
.stage{background:var(--panel);padding:12px;border-radius:10px}
canvas{width:100%;height:auto;border-radius:8px;display:block}
footer{color:var(--muted);margin-top:10px}