* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #1a1a2e;
    font-family: 'Arial', sans-serif;
    overflow: hidden;
}

canvas {
    border: 3px solid #333;
    border-radius: 10px;
    box-shadow: 0 0 30px rgba(0,0,0,0.5);
    display: block;
}

#gameOver, #startScreen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0,0,0,0.85);
    color: white;
    padding: 40px 50px;
    border-radius: 15px;
    text-align: center;
    display: none;
    z-index: 10;
    border: 2px solid #ffd700;
    box-shadow: 0 0 40px rgba(255,215,0,0.3);
}

#startScreen {
    display: block;
}

h1 {
    font-size: 2.5em;
    margin-bottom: 15px;
    color: #ffd700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

p {
    font-size: 1.1em;
    margin-bottom: 20px;
    color: #ccc;
}

button {
    background: #ffd700;
    color: #1a1a2e;
    border: none;
    padding: 12px 35px;
    font-size: 1.2em;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

button:hover {
    background: #ffed4a;
    transform: scale(1.05);
}

#gameOver {
    display: none;
}