body {
    margin: 0;
    overflow: hidden;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    user-select: none;
}
#crosshair {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    color: white; font-size: 24px;
    pointer-events: none; z-index: 10;
    text-shadow: 2px 2px 0 #000;
}
#ui-layer {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex; justify-content: center; align-items: center;
    color: white; text-align: center;
}
#inventory {
    position: absolute; bottom: 10px; left: 50%;
    transform: translateX(-50%);
    display: flex; gap: 8px;
    background: rgba(0,0,0,0.5); padding: 8px;
    border-radius: 8px;
}
.slot {
    width: 40px; height: 40px; border: 2px solid #555;
    color: white; font-weight: bold;
    display: flex; justify-content: center; align-items: center;
    font-size: 1.2rem; text-shadow: 1px 1px 0 #000;
}
.slot.active { border-color: white; transform: scale(1.1); background: rgba(255,255,255,0.2); }
#debug {
    position: absolute; top: 10px; left: 10px;
    color: lime; font-family: monospace; font-size: 14px;
    text-shadow: 1px 1px 0 #000; pointer-events: none;
}