body {
    font-family: 'Hiragino Kaku Gothic ProN', sans-serif;
    text-align: center;
    background: #2c3e50;
    color: white;
    margin: 0;
}

#game-container {
    background: #34495e;
    width: 650px;
    margin: 20px auto;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    position: relative;
}

canvas {
    background: #222;
    border: 4px solid #1a252f;
    cursor: pointer;
    border-radius: 5px;
}

.controls {
    margin-top: 15px;
    padding: 15px;
    background: #1a252f;
    border-radius: 10px;
}

button {
    padding: 10px 18px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    background: #e67e22;
    color: white;
    border: none;
    border-radius: 5px;
    transition: 0.2s;
    margin: 3px;
}

button:hover {
    background: #d35400;
    transform: scale(1.05);
}

button:disabled {
    background: #7f8c8d;
    cursor: not-allowed;
    border: 2px solid #fff;
}

#message {
    font-size: 1.1em;
    color: #f1c40f;
    min-height: 1.5em;
    margin: 10px 0;
}

#overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10;
}

#overlay-content {
    background: #34495e;
    padding: 30px;
    border-radius: 10px;
    border: 2px solid #f1c40f;
}

.setup-input {
    margin: 15px 0;
}

input {
    padding: 8px;
    width: 60px;
    font-size: 16px;
    border-radius: 5px;
    border: none;
    text-align: center;
}