#debug-hud {
    position: fixed; top: 90px; right: 20px; width: 180px;
    background: rgba(0,0,0,0.7); backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1); border-radius: 12px;
    padding: 15px; font-family: 'JetBrains Mono', monospace; font-size: 10px;
    color: #00ff9d; display: none; z-index: 500; pointer-events: none;
}
#fps-badge {
    position: fixed; top: 12px; right: 12px; z-index: 600;
    background: rgba(0,0,0,0.75); color: #00ff9d;
    font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 700;
    padding: 6px 10px; border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.12);
    display: none; pointer-events: none;
}
.hud-row { display: flex; justify-content: space-between; margin-bottom: 4px; border-bottom: 1px dashed rgba(255,255,255,0.1); }