body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #2c3e50; /* Dark slate blue */
    text-align: center;
    color: #ecf0f1; /* Light text color */
}

h1 {
    font-size: 3em;
    margin-top: 20px;
    margin-bottom: 10px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
}

button {
    padding: 12px 25px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    border-radius: 8px;
    border: none;
    background: linear-gradient(45deg, #3498db, #2980b9);
    color: #ffffff;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

button:hover {
    background: linear-gradient(45deg, #2980b9, #3498db);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

button:active {
    transform: translateY(0) scale(1);
}

canvas {
    border: 2px solid #34495e;
    background: linear-gradient(to bottom, #87CEEB, #E0F6FF); /* Sky gradient */
    display: block;
    margin: 20px auto;
    box-shadow: 0 10px 20px rgba(0,0,0,0.25);
}