:root {
    --neon-blue: #00f3ff;
    --neon-pink: #ff00ff;
    --neon-purple: #9d00ff;
    --dark-bg: #0a0a12;
    --grid-color: rgba(0, 243, 255, 0.1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Orbitron', sans-serif;
    user-select: none;
}

body {
    background-color: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
    color: white;
}

/* Background Effect via CSS Gradient since we have no image */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(to bottom, #000000 0%, #1a1a2e 100%),
        repeating-linear-gradient(0deg, transparent 0, transparent 1px, var(--grid-color) 1px, var(--grid-color) 2px),
        repeating-linear-gradient(90deg, transparent 0, transparent 1px, var(--grid-color) 1px, var(--grid-color) 2px);
    background-size: 100% 100%, 40px 40px, 40px 40px;
    z-index: -1;
    opacity: 0.8;
}

#game-container {
    position: relative;
    width: 800px;
    height: 450px;
    box-shadow: 0 0 50px rgba(0, 243, 255, 0.2);
    border: 2px solid var(--neon-blue);
    background: rgba(0, 0, 0, 0.5);
    overflow: hidden;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
}

#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

#score-board {
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 24px;
    color: var(--neon-blue);
    text-shadow: 0 0 10px var(--neon-blue);
}

.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.85);
    pointer-events: auto;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.screen.active {
    opacity: 1;
    pointer-events: auto;
}

.logo {
    font-size: 64px;
    color: transparent;
    -webkit-text-stroke: 2px var(--neon-pink);
    text-shadow: 0 0 20px var(--neon-pink);
    margin-bottom: 20px;
    letter-spacing: 4px;
}

p {
    color: #ccc;
    margin-bottom: 30px;
    font-size: 18px;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
}

.neon-btn {
    background: transparent;
    border: 2px solid var(--neon-blue);
    color: var(--neon-blue);
    padding: 15px 40px;
    font-size: 24px;
    cursor: pointer;
    text-transform: uppercase;
    box-shadow: 0 0 10px var(--neon-blue);
    transition: all 0.2s;
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
}

.neon-btn:hover {
    background: var(--neon-blue);
    color: #000;
    box-shadow: 0 0 30px var(--neon-blue);
}

#game-over-title {
    font-size: 48px;
    color: #ff3333;
    text-shadow: 0 0 20px #ff0000;
    margin-bottom: 20px;
}