* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #0a0a0a;
    font-family: 'Courier New', monospace;
}

#game-container {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

#game-canvas {
    display: block;
    image-rendering: pixelated;
}

/* ── Mobile touch controls ── */
#mobile-controls {
    display: none;
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
    padding: 6px 4px;
    gap: 6px;
    flex-direction: column;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
}

@media (pointer: coarse) {
    #mobile-controls { display: flex; }
    html, body { overflow: auto; }
    #game-container { flex-shrink: 0; }
}

.ctrl-row {
    display: flex;
    justify-content: center;
    gap: 6px;
}

.ctrl-btn {
    flex: 1;
    max-width: 72px;
    height: 52px;
    border: 1px solid #444;
    border-radius: 6px;
    background: #1a1a1a;
    color: #c8c8c8;
    font-family: 'Courier New', monospace;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.ctrl-btn.wide {
    max-width: 144px;
    flex: 2;
}

.ctrl-btn:active {
    background: #333;
    border-color: #888;
    color: #fff;
}