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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #ffffff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: Arial, sans-serif;
    touch-action: none;
}

#gameCanvas {
    display: block;
    border: 4px solid #000000;
    box-shadow: 0 0 32px rgba(0,0,0,0.3);
    background: #fff;
    touch-action: none;
    cursor: pointer;
}

.game-ui {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 32px;
    font-size: clamp(14px, 2.5vw, 28px);
    color: #2e6b4a;
    font-family: Arial Black, Arial, sans-serif;
    user-select: none;
    pointer-events: none;
    white-space: nowrap;
}

#startBtn, #restartBtn {
    display: none !important;
}