body {
    margin: 0;
    padding: 0;
    background-color: #050505;
    color: #fff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
}

#game-container {
    position: relative;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
    border: 2px solid #0ff;
    border-radius: 8px;
}

canvas {
    display: block;
    background: #000;
}

#ui {
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    text-shadow: 0 0 5px #0ff;
    font-weight: bold;
}

#overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: opacity 0.3s;
}

#overlay.hidden {
    display: none;
}

h1 {
    font-size: 3rem;
    color: #0ff;
    text-shadow: 0 0 10px #0ff;
    margin-bottom: 20px;
}

button {
    padding: 10px 30px;
    background: transparent;
    border: 2px solid #0ff;
    color: #0ff;
    font-size: 1.2rem;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s;
}

button:hover {
    background: #0ff;
    color: #000;
    box-shadow: 0 0 15px #0ff;
}