/* 容器：置中且黑底白字 */
.hsv-wrapper {
    max-width: 520px;
    margin: 40px auto;
    text-align: center;
    font-family: 'Courier New', Courier, monospace; /* 復古打字機字體 */
    background: #111;
    padding: 20px;
    border: 1px solid #333;
    color: #fff;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

/* 畫布外框 */
.hsv-canvas-box {
    margin: 20px auto;
    border: 4px solid #fff; /* 白色畫框 */
    width: 500px;
    height: 500px;
    background: #000;
}

/* 隱藏預設的醜醜 input，改用 Label 做按鈕 */
input[type="file"]#hsv-upload {
    display: none;
}

.hsv-file-label {
    display: inline-block;
    padding: 8px 16px;
    border: 1px solid #666;
    background: #222;
    color: #ccc;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.hsv-file-label:hover {
    background: #fff;
    color: #000;
}

/* 狀態文字 */
#hsv-status {
    font-size: 12px;
    color: #888;
    margin-bottom: 10px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* 播放按鈕 */
#hsv-play-btn {
    background: #fff;
    color: #000;
    border: none;
    padding: 10px 40px;
    font-weight: bold;
    font-size: 16px;
    cursor: pointer;
    text-transform: uppercase;
    border-radius: 0; /* 方形按鈕 */
}

#hsv-play-btn:hover {
    background: #ccc;
}