/* Custom CSS for a dark, neon-vibe aesthetic */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&display=swap');

body {
    font-family: 'Orbitron', sans-serif;
    /* --- Radial Gradient Background: Dark Purple to Black --- */
    background: radial-gradient(circle at center, #1a0029 0%, #0d001a 50%, #000000 100%);
    /* Fallback for older browsers: */
    background-color: #0d0d0d; 
    /* ------------------------------------------ */
    color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 1rem;
    flex-direction: column;
}

.game-container {
    background-color: #1a1a1a;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 0 40px rgba(0, 200, 255, 0.4); /* Neon Blue Glow */
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 2px solid #00c8ff;
}

h1 {
    color: #00c8ff;
    font-size: 1.8rem;
    text-shadow: 0 0 10px rgba(0, 200, 255, 0.8);
    margin-bottom: 0.5rem;
}

canvas {
    border: 1px solid #00c8ff;
    background-color: #000000;
    touch-action: none; /* Crucial for mobile controls */
    max-width: 100%;
    height: auto;
}

#score-display {
    font-size: 1.2rem;
    text-align: center;
    margin-top: 0.5rem;
    color: #ffcc00; /* Yellow for score */
}

/* Message Box / Game Over Modal */
#message-box {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.9);
    padding: 2rem;
    border-radius: 1rem;
    border: 3px solid #ff4500; /* Orange-Red for warnings */
    text-align: center;
    box-shadow: 0 0 20px rgba(255, 69, 0, 0.8);
    z-index: 10;
    display: none;
    font-size: 1.1rem;
    max-width: 80%;
}

#message-box button {
    background-color: #ff4500;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    font-family: 'Orbitron', sans-serif;
    margin-top: 1rem;
    transition: background-color 0.2s;
}
#message-box button:hover {
    background-color: #cc3700;
}

/* Mobile Controls */
.controls {
    display: none; /* Hidden by default */
    width: 100%;
    max-width: 480px;
    margin-top: 1rem;
    padding-top: 10px;
    display: flex;
    justify-content: space-between;
}
.control-button {
    background-color: #00c8ff; /* Neon Blue */
    color: #000000;
    font-size: 1.5rem;
    width: 45%;
    padding: 1rem 0;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-color 0.1s, transform 0.1s;
    box-shadow: 0 4px #008fcc;
    text-align: center;
    user-select: none;
    font-weight: 700;
}
.control-button:active {
    transform: translateY(2px);
    box-shadow: 0 2px #008fcc;
}