body {
    font-family: sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px;
    background: #f0f2f5;
    margin: 0;
}

h1 {
    font-size: 20px;
    margin: 15px 0 5px 0;
    color: #333;
}

.maker-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 450px;
    background: white;
    padding: 15px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    box-sizing: border-box;
}

.canvas-area {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    border: 1px solid #ddd;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
}

canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.control-area {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.control-group {
    border-bottom: 1px solid #eee;
    padding-bottom: 12px;
}

h3 {
    margin: 6px 0;
    font-size: 15px;
    color: #444;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 8px;
    padding-bottom: 4px;
}

button.part-btn {
    padding: 10px 16px;
    border: 1px solid #ccc;
    background: white;
    cursor: pointer;
    border-radius: 20px;
    font-size: 14px;
    white-space: nowrap;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
}

button.part-btn.active {
    background: #007bff;
    color: white;
    border-color: #007bff;
    font-weight: bold;
}

.color-picker-wrap {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 5px;
}

.color-picker-wrap label {
    font-size: 13px;
    color: #666;
}

input[type="color"] {
    width: 50px;
    height: 32px;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 0;
    cursor: pointer;
    background: none;
}

.text-input {
    width: 100%;
    box-sizing: border-box;
    padding: 8px;
    font-size: 14px;
    border: 1px solid #ccc;
    border-radius: 6px;
}

#download-btn {
    margin-top: 5px;
    padding: 14px;
    background: #28a745;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    width: 100%;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

@media (min-width: 600px) {
    body {
        padding: 20px;
    }

    .maker-container {
        flex-direction: row;
        max-width: 800px;
        padding: 20px;
    }

    .canvas-area {
        width: 400px;
        height: 400px;
        flex-shrink: 0;
    }

    .control-area {
        flex: 1;
    }
}