body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

h1 {
    color: #333;
}

form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

label {
    font-weight: bold;
    text-align: center;
}

input {
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 6px;
    transition: all 0.3s ease;
    width: 335px;
    font-size: 16px;
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
}

.slider-container input[type="range"] {
    flex: 1;
}

.slider-container span {
    min-width: 40px;
    text-align: center;
    font-weight: bold;
}

input:focus {
    border-color: #007BFF;
    box-shadow: 0 2px 8px rgba(0,123,255,0.2);
    outline: none;
}

button {
    padding: 10px 20px;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

#downloadBtn {
    margin-top: 30px;
}

button:hover {
    background-color: #0056b3;
}

canvas {
    border: 1px solid #ccc;
    background-color: white;
    max-width: 100%;
    height: auto;
}

@media (max-width: 768px) {
    body {
        padding: 20px;
        min-height: auto;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    form {
        width: 100%;
    }
    
    input {
        padding: 8px;
        font-size: 16px;
        box-shadow: none;
    }
    
    button {
        padding: 8px 16px;
    }
    
    #downloadBtn {
        margin-top: 20px;
    }
}