* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: #1e293b; color: #f8fafc; min-height: 100vh; display: flex; flex-direction: column; align-items: center; padding: 1rem; }
header h1 { font-size: 2rem; color: #fbbf24; margin-bottom: 1rem; }
.controls { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; justify-content: center; margin-bottom: 1rem; }
.controls span { font-size: 1.1rem; }
.controls b { color: #fbbf24; }
.controls button { padding: 0.4rem 0.8rem; border-radius: 4px; border: none; font-size: 1rem; cursor: pointer; background: #334155; color: #f8fafc; font-weight: bold; }
.controls button:hover { background: #475569; }
canvas { border: 2px solid #fbbf24; border-radius: 8px; background: #0f172a; max-width: 100%; height: auto; }
.info { margin-top: 0.5rem; font-size: 1.1rem; font-weight: bold; min-height: 1.5rem; color: #fbbf24; }
footer { margin-top: 1rem; }
footer a { color: #fbbf24; text-decoration: none; }