body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background: #2c3e50;
    margin: 0;
    color: white;
}

canvas {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    max-width: 90vw;
}

.controls {
    background: #34495e;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
}

input {
    padding: 8px;
    border-radius: 4px;
    border: none;
    width: 50px;
    margin: 10px;
    font-size: 1.1rem;
}

button {
    padding: 10px 20px;
    border-radius: 4px;
    border: none;
    background: #2ecc71;
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s;
}

button:hover {
    background: #27ae60;
    transform: scale(1.05);
}

#shareBtn {
    position: absolute;
    bottom: 20px;
    display: none;
    background: #3498db;
}