body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f7f6;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    text-align: center;
}

.controls {
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
    justify-content: center;
}

input[type="text"] {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

button {
    padding: 10px 20px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #2980b9;
}

.download-btn {
    background-color: #2ecc71;
}

.canvas-wrapper {
    border: 2px dashed #ccc;
    display: inline-block;
    background-image: linear-gradient(45deg, #f0f0f0 25%, transparent 25%), 
                      linear-gradient(-45deg, #f0f0f0 25%, transparent 25%);
    background-size: 20px 20px;
}