:root {
    --bg-color: #050510;
    --primary-color: #00ffcc;
    /* Neon Cyan */
    --secondary-color: #ff00ff;
    /* Neon Magenta */
    --accent-color: #bd00ff;
    /* Neon Purple */
    --text-color: #ffffff;
    --grid-color: rgba(0, 255, 204, 0.05);
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Orbitron', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    z-index: 1;
    touch-action: none;
    /* Prevent browser scrolling handling */
}

.ui-panel {
    text-align: center;
    width: 100%;
}

h1 {
    font-size: 3rem;
    margin: 0 0 20px 0;
    color: var(--primary-color);
    text-shadow: 0 0 10px var(--primary-color), 0 0 20px var(--primary-color);
    letter-spacing: 5px;
}

.score-board {
    display: inline-block;
    margin: 0 20px;
    font-size: 1.2rem;
}

.label {
    color: #888;
    margin-right: 10px;
}

#score,
#high-score {
    color: var(--text-color);
    font-weight: bold;
    text-shadow: 0 0 5px var(--text-color);
}

.canvas-wrapper {
    position: relative;
    padding: 5px;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    border-radius: 4px;
    box-shadow: 0 0 30px rgba(0, 255, 204, 0.2);
}

canvas {
    background-color: #0a0a14;
    display: block;
    background-image:
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 20px 20px;
}

.overlay {
    position: absolute;
    top: 5px;
    /* Account for wrapper padding */
    left: 5px;
    right: 5px;
    bottom: 5px;
    background: rgba(5, 5, 16, 0.85);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    backdrop-filter: blur(5px);
    transition: opacity 0.3s ease;
}

.overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.overlay h2 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--secondary-color);
    text-shadow: 0 0 10px var(--secondary-color);
}

.overlay p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

button {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 15px 40px;
    font-size: 1.2rem;
    font-family: 'Orbitron', sans-serif;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.3s ease;
    box-shadow: 0 0 10px rgba(0, 255, 204, 0.2);
}

button:hover {
    background: var(--primary-color);
    color: var(--bg-color);
    box-shadow: 0 0 20px var(--primary-color);
}

/* Responsive */
@media (max-width: 650px) {
    canvas {
        width: 100%;
        max-width: 400px;
        height: auto;
    }

    .canvas-wrapper {
        width: fit-content;
    }
}