/* Futuristic road with neon grid */
#road {
    background-color: #0a0a15;
    background-image: 
        linear-gradient(to bottom, 
            transparent 0%, 
            transparent 48%, 
            rgba(0, 255, 255, 0.2) 48%, 
            rgba(0, 255, 255, 0.2) 52%, 
            transparent 52%, 
            transparent 100%),
        linear-gradient(to right, 
            rgba(0, 255, 255, 0.05) 0%, 
            rgba(0, 255, 255, 0.05) 49%, 
            transparent 49%, 
            transparent 51%, 
            rgba(0, 255, 255, 0.05) 51%, 
            rgba(0, 255, 255, 0.05) 100%);
    background-size: 100px 100px, 100px 100px;
    animation: roadMove 0.5s linear infinite;
    box-shadow: 0 0 30px rgba(0, 255, 255, 0.3) inset;
}

@keyframes roadMove {
    from { background-position: 0 0, 0 0; }
    to { background-position: 0 100px, 0 0; }
}

/* Futuristic obstacles */
.obstacle {
    position: absolute;
    background-color: #ff00ff;
    border-radius: 5px;
    box-shadow: 0 0 15px #ff00ff, 0 0 30px rgba(255, 0, 255, 0.3);
}

/* Player car */
#player-car {
    background: linear-gradient(135deg, #00ffff 0%, #ff00ff 100%);
    box-shadow: 0 0 20px #00ffff, 0 0 40px rgba(0, 255, 255, 0.3);
    border-radius: 10px;
}

/* Game screens */
#game-over, #start-screen {
    background: rgba(10, 10, 30, 0.9);
    border: 2px solid #00ffff;
    box-shadow: 0 0 30px #00ffff;
}

#game-over h2, #start-screen h1 {
    text-shadow: 0 0 10px #00ffff, 0 0 20px rgba(0, 255, 255, 0.5);
}

button {
    background: linear-gradient(135deg, #00ffff 0%, #ff00ff 100%);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
    border: none;
    color: #111;
    font-weight: bold;
    transition: all 0.3s;
}

button:hover {
    transform: scale(1.05);
    box-shadow: 0 0 25px rgba(0, 255, 255, 0.8);
}

#score {
    background: rgba(10, 10, 30, 0.7);
    border: 1px solid #00ffff;
    color: #00ffff;
    text-shadow: 0 0 5px #00ffff;
}