.gp2d-wrapper {
    max-width: 100%;
    margin: 30px auto;
    padding: 20px;
    background: #ffffff;
    border: 1px solid #ddd;
    box-sizing: border-box;
}

.gp2d-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.gp2d-toolbar button {
    padding: 10px 14px;
    border: 0;
    background: #222;
    color: #fff;
    cursor: pointer;
    border-radius: 4px;
    font-size: 14px;
}

.gp2d-toolbar button:hover {
    opacity: 0.9;
}

.gp2d-canvas-wrap {
    overflow-x: auto;
    border: 1px solid #ccc;
    background: #f9f9f9;
    padding: 10px;
}

#gp2d-canvas {
    border: 1px solid #aaa;
    background-color: #fff;
    display: block;
}

.gp2d-message {
    margin-top: 15px;
    font-size: 14px;
    color: #222;
}