.puzzle-preview-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
    padding: 15px;
    background-color: #f5f5f5;
    border-radius: 4px;
    min-height: 100px;
    overflow-y: auto;
}

.puzzle-preview-item {
    position: relative;
    display: inline-block;
    margin: 5px;
    border: 2px solid #ddd;
    border-radius: 4px;
    overflow: hidden;
}

.puzzle-preview-item img {
    display: block;
    max-width: 150px;
    max-height: 150px;
    object-fit: contain;
    background-color: #fff;
}

.puzzle-preview-remove {
    position: absolute;
    top: 5px;
    right: 5px;
    background-color: rgba(255, 0, 0, 0.8);
    color: white;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.puzzle-preview-remove:hover {
    background-color: rgba(255, 0, 0, 1);
}

.puzzle-canvas-container {
    margin-top: 15px;
    padding: 15px;
    background-color: #f0f8ff;
    border-radius: 4px;
    text-align: center;
    overflow: visible;
    max-height: none;
}

.puzzle-canvas {
    max-width: 100%;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    object-fit: contain;
    background-color: #f5f5f5;
    display: inline-block;
}

.canvas-wrapper {
    display: inline-block;
    position: relative;
    margin-bottom: 10px;
}

.canvas-wrapper:hover {
    opacity: 0.9;
}

/* 主容器布局 - 左右两栏 */
.puzzle-main-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    height: 100%;
}

/* 左边操作面板 */
.puzzle-left-panel {
    padding-right: 10px;
    overflow-y: auto;
    max-height: 500px;
}

/* 右边预览面板 */
.puzzle-right-panel {
    border-left: 1px solid #e0e0e0;
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
}

/* 拼图设置网格布局 */
.puzzle-settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2px;
    margin-top: 15px;
}

/* 表单组内部间距调整 */
.puzzle-settings-grid .form-group {
    margin-bottom: 10px !important;
}

.puzzle-settings-grid .form-group label {
    margin-bottom: 4px !important;
}

/* 移除跨列显示样式，因为不再需要 */
.full-width {
    grid-column: auto;
}

/* 预览容器固定大小 */
.puzzle-canvas-container {
    width: 100%;
    max-width: 400px;
    height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: auto;
    background-color: #f5f5f5;
    border-radius: 8px;
    padding: 15px;
    box-sizing: border-box;
    margin: 0 auto;
}

/* 占位符样式 */
.preview-placeholder {
    color: #999;
    font-size: 14px;
    text-align: center;
}

/* 画布固定大小 */
.puzzle-canvas {
    max-width: 100%;
    max-height: 350px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    object-fit: contain;
    background-color: #fff;
    display: inline-block;
}

/* 画布包装器 */
.canvas-wrapper {
    display: inline-block;
    position: relative;
    margin-bottom: 10px;
    cursor: default;
    text-align: center;
}

/* 禁用点击缩放 */
.canvas-wrapper:hover {
    opacity: 0.9;
    cursor: pointer;
}

.grid-item {
    margin: 0;
}

/* 大图预览模态框样式 */
.fullscreen-preview-content {
    width: 90%;
    max-width: 1200px;
    max-height: 90vh;
    min-width: 0;
}

.fullscreen-preview-container {
    width: 100%;
    height: 100%;
    max-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    box-sizing: border-box;
}

.fullscreen-preview-container img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

/* 提示文字 */
.preview-hint {
    font-size: 12px;
    color: #666;
    margin-top: 10px;
    text-align: center;
    cursor: pointer;
}

/* 单选按钮组样式 */
.radio-group {
    display: flex;
    gap: 20px;
    align-items: center;
}

.radio-group label {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

/* 表单组样式优化 */
.form-group {
    margin-bottom: 12px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #333;
    font-size: 13px;
}

/* 限制选择框和输入框的宽度，使其更紧凑 */
.form-group select,
.form-group input[type="number"] {
    width: 80%;
    padding: 5px 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 12px;
    box-sizing: border-box;
    background-color: #fff;
}

.form-group select:focus,
.form-group input[type="number"]:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

/* 移除不需要的单选按钮样式，因为背景颜色选择已改为下拉选择框 */

/* 确保背景颜色选择区域没有额外的背景色 */
.form-group {
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 0 12px 0 !important;
}

/* 确保整个操作面板背景一致 */
.puzzle-left-panel {
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
}

/* 按钮样式优化 */
#browse-puzzle-files,
#create-puzzle,
#download-puzzle {
    font-size: 13px;
    padding: 8px 16px;
    height: auto;
    line-height: normal;
}

/* 文件上传区域优化 */
.file-upload-area {
    margin-bottom: 10px;
}

.file-upload-area .hint {
    font-size: 12px;
    margin-top: 8px;
    line-height: 1.4;
}

/* 预览容器优化 */
.puzzle-preview-container {
    gap: 8px;
    padding: 10px;
    margin-top: 10px;
}

.puzzle-preview-item {
    margin: 3px;
}

.puzzle-preview-item img {
    max-width: 120px;
    max-height: 120px;
}

/* 设置网格优化 */
.puzzle-settings-grid {
    gap: 15px;
    margin-top: 15px;
}

/* 单选按钮组优化 */
.radio-group {
    gap: 15px;
}

.radio-group label {
    font-size: 13px;
    font-weight: normal;
}

.puzzle-stats {
    margin-top: 10px;
    font-size: 14px;
    color: #666;
}