* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: #2d3748; 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: 1rem; align-items: center; flex-wrap: wrap; justify-content: center; margin-bottom: 1rem; background: rgba(0,0,0,0.3); padding: 0.75rem 1.5rem; border-radius: 8px; }
.controls select, .controls button { padding: 0.4rem 0.8rem; border-radius: 4px; border: none; font-size: 1rem; cursor: pointer; }
.controls button { background: #fbbf24; color: #1e293b; font-weight: bold; }
.controls b { color: #fbbf24; }
canvas { border: 2px solid #fbbf24; border-radius: 4px; max-width: 100%; height: auto; cursor: pointer; }
.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; }