* { margin: 0; padding: 0; box-sizing: border-box; }
body { 
    font-family: 'Courier New', monospace; 
    background: linear-gradient(45deg, #000, #1a1a2e, #16213e);
    overflow: hidden;
    color: #00ff41; /* Yeşil Matrix */
}

/* MENÜLER - Neon Glow */
.menu {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    background: rgba(0,0,0,0.9); backdrop-filter: blur(10px);
    z-index: 100; transition: all 0.5s ease;
}
.menu:not(.active) { display: none; }

.logo { font-size: 4rem; text-shadow: 0 0 20px #00ff41; margin-bottom: 2rem; animation: glow 2s infinite; }
@keyframes glow { 0%,100%{text-shadow:0 0 20px #00ff41} 50%{text-shadow:0 0 40px #00ff41} }

.btn-neon {
    background: transparent; border: 2px solid #00ff41; color: #00ff41;
    padding: 15px 30px; margin: 10px; font-size: 1.2rem; cursor: pointer;
    transition: all 0.3s; text-transform: uppercase; letter-spacing: 2px;
}
.btn-neon:hover { 
    background: #00ff41; color: #000; box-shadow: 0 0 30px #00ff41;
    transform: scale(1.1); 
}
.btn-back { background: #ff0040; border-color: #ff0040; color: #fff; }

/* ARABA SEÇİMİ */
.car-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 20px; margin: 2rem 0; }
.car-btn { 
    padding: 20px; font-size: 2rem; border: 3px solid #00ff41; 
    background: rgba(0,255,65,0.1); transition: all 0.3s;
}
.car-btn.active, .car-btn:hover { background: #00ff41; color: #000; transform: rotate(5deg); }

/* OYUN ALANI */
.game-container { 
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; display: none;
}
#gameCanvas { 
    width: 100%; height: 100%; background: linear-gradient(to bottom, #87CEEB, #228B22);
    display: block; 
}
#score, #speed { 
    position: absolute; top: 20px; font-size: 1.5rem; 
    background: rgba(0,0,0,0.7); padding: 10px; border-radius: 10px;
}
#score { left: 20px; } #speed { right: 20px; }

/* GAME OVER */
.game-over-text { font-size: 3rem; color: #ff0040; text-shadow: 0 0 30px #ff0040; margin: 2rem; }
.score-display { position: absolute; bottom: 20px; left: 20px; font-size: 1.2rem; }

/* MOBILE TOUCH */
@media (max-width: 600px) { .logo { font-size: 2.5rem; } .car-grid { grid-template-columns: 1fr; } }