body {
    font-family: sans-serif;
    background: #f4f4f5;
    margin: 0; 
    padding: 2rem;
    text-align: center;
    color: #18181b;
}

#grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    margin: 2rem 0;
}

.card {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

canvas {
    border: 2px dashed #e4e4e7;
    background: white;
    cursor: crosshair;
    touch-action: none;
    border-radius: 6px;
}

.controls {
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
}

button {
    background: #18181b;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

button:hover { background: #3f3f46; }

.delete { background: #ef4444; }
.delete:hover { background: #dc2626; }

#add-btn {
    font-size: 1.1rem;
    padding: 12px 24px;
    margin-bottom: 2rem;
    border-radius: 8px;
}