:root {
    --neon-blue: #00f3ff;
    --neon-pink: #ff00ff;
    --dark-bg: #0a0a0a;
    --text-color: #ffffff;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
}

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

#game-container {
    position: relative;
    width: 800px;
    height: 450px;
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.2);
    border: 2px solid var(--neon-blue);
    background: #000;
}

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

#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    display: flex;
    justify-content: center;
    align-items: center;
}

.screen {
    text-align: center;
    background: rgba(0, 0, 0, 0.85);
    padding: 2rem;
    border-radius: 10px;
    pointer-events: auto;
    border: 1px solid var(--neon-pink);
    box-shadow: 0 0 15px var(--neon-pink);
    backdrop-filter: blur(5px);
}

.hidden {
    display: none !important;
}

h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--neon-blue);
    text-shadow: 0 0 10px var(--neon-blue);
}

p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

button {
    background: transparent;
    border: 2px solid var(--neon-blue);
    color: var(--neon-blue);
    padding: 1rem 2rem;
    font-size: 1.2rem;
    font-family: 'Orbitron', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
}

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

#hud {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 2rem;
    color: var(--neon-blue);
    text-shadow: 0 0 5px var(--neon-blue);
}