body {
    font-family: Arial, sans-serif;
    background: linear-gradient(120deg, #a6c0fe, #f68084);
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
}

.container {
    text-align: center;
    background: white;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

h1 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: #333;
}

canvas {
    display: block;
    margin: 20px auto;
    border: 2px solid #333;
    border-radius: 10px;
    cursor: crosshair;
}

.controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
    margin-top: 15px;
}

label {
    font-weight: bold;
    color: #444;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 150px;
    height: 5px;
    background: #ddd;
    border-radius: 5px;
    outline: none;
}

input[type="color"] {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s ease;
}

button:hover {
    background: #45a049;
}

button:active {
    background: #3e8e41;
}