body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #87CEEB;
    font-family: 'Segoe UI', sans-serif;
    /* Bloqueia gestos do navegador como "puxar para atualizar" e zoom */
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
}

#ui {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
}

#speedometer {
    position: absolute;
    bottom: 40px;
    left: 20px;
    font-size: 2.2rem;
    color: white;
    font-weight: 900;
    text-shadow: 2px 2px 0px #000;
}

#engine-status {
    position: absolute;
    bottom: 20px;
    left: 20px;
    color: #00ff00;
    font-size: 1rem;
    font-weight: bold;
}

#controls-touch {
    position: absolute;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    pointer-events: auto;
}

.row { display: flex; gap: 8px; }

button {
    width: 65px;
    height: 65px;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid rgba(255, 255, 255, 0.8);
    color: white;
    border-radius: 12px;
    font-size: 20px;
    /* Essencial para mobile: */
    touch-action: none; 
    pointer-events: auto;
    -webkit-tap-highlight-color: transparent;
}

button:active {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(0.95);
}

#btn-reset {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 80px;
    height: 40px;
    font-size: 12px;
}