/* ========================================
   SortableJS 拖拽列表样式
   用于关卡列表的拖拽排序功能
   ======================================== */

/* 关卡列表网格布局 */
.level-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    /* 移动端滚动优化 */
    overscroll-behavior-y: contain;
    -webkit-overflow-scrolling: touch;
    /* 允许纵向滚动，但由drag-handle控制拖拽 */
    touch-action: pan-y;
}

/* 关卡列表项基础样式 */
.level-item {
    position: relative;
    padding: 0;
    background: #f9f9f9;
    border-left: 3px solid #ddd;
    border-radius: 4px;
    transition: all 0.3s;
    overflow: hidden;
    font-size: 11px;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    /* 防止iOS自动调整文本大小 */
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    /* 允许滚动，不影响拖拽 */
    touch-action: pan-y;
}

/* 关卡列表项基础样式 */
.level-item.deleted-level {
    position: relative;
    padding: 0;
    background: #262424;
    border-left: 3px solid #ddd;
    border-radius: 4px;
    transition: all 0.3s;
    overflow: hidden;
    font-size: 11px;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
}

.level-item:hover {
    background: #e3f2fd;
    border-left-color: #64B5F6;
}

.level-item.active {
    background: #2196F3;
    color: white;
    border-left-color: #1976D2;
    font-weight: bold;
}

/* 拖拽手柄 */
.drag-handle {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: move;
    font-size: 16px;
    color: #bbb;
    padding: 4px 8px;
    min-width: 24px;
    user-select: none;
    transition: color 0.2s;
    flex-shrink: 0;
    /* 移动端：只在编辑模式下阻止触摸事件 */
    touch-action: none;
}

.drag-handle:hover {
    color: #2196F3;
}

/* 拖拽状态样式 */
.level-item[draggable="true"] {
    cursor: move;
}

/* SortableJS 选中状态 */
.no-drag {
    /* opacity: 0.8;
    box-shadow: 0 0 8px rgb(74, 75, 76); */
}

/* SortableJS 选中状态 */
.sortable-chosen {
    opacity: 0.8;
    box-shadow: 0 0 8px rgba(33, 150, 243, 0.5);
    /* 拖拽时禁用 transition */
    transition: none !important;
}

/* SortableJS 拖拽中状态（ghost） */
.sortable-ghost {
    opacity: 0.4;
    background: #ffe082 !important;
    border-left-color: #FF9800 !important;
}

/* SortableJS 拖拽元素样式 */
.sortable-drag {
    opacity: 1;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transform: rotate(2deg);
    /* 拖拽时禁用 transition，确保元素实时跟随手指 */
    transition: none !important;
}

/* 占位符样式（拖拽到目标位置时的提示） */
.drop-placeholder {
    background: #e3f2fd !important;
    border: 2px dashed #2196F3 !important;
    opacity: 0.6;
    min-height: 50px;
}

.drop-placeholder .level-content,
.drop-placeholder .drag-handle {
    visibility: hidden;
}

/* 删除按钮样式 */
.level-delete-btn {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 20px;
    height: 20px;
    background: #ff4d4f;
    color: #fff;
    border: none;
    border-radius: 3px;
    font-weight: bold;
    cursor: pointer;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
    font-size: 14px;
    line-height: 1;
    transition: all 0.2s;
}

.level-delete-btn:hover {
    background: #ff1a1a;
    transform: scale(1.1);
}

.level-delete-btn:active {
    transform: scale(0.95);
}

/* 关卡内容区域 */
.level-content {
    position: relative;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 4px;
    cursor: pointer;
    /* iOS Safari 点击优化 */
    -webkit-tap-highlight-color: rgba(33, 150, 243, 0.2);
    -webkit-touch-callout: none;
    touch-action: manipulation;
}

.level-content:hover {
    background: rgba(33, 150, 243, 0.05);
}

.level-item.active .level-content:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* 关卡编号样式 */
.level-wrapper {
    display: block;
    text-align: center;
}

.level-num {
    font-weight: 600;
    font-size: 12px;
    margin-bottom: 2px;
}

.level-item.active .level-num {
    color: white;
}

/* 关卡信息（字节数） */
.level-info {
    font-size: 9px;
    opacity: 0.7;
    text-align: center;
}

.level-item.active .level-info {
    opacity: 0.9;
}

/* 原始关卡标签（拖拽后显示） */
.original-label {
    font-size: 11px;
    opacity: 0.7;
    font-weight: normal;
}

/* 新增关卡按钮样式 */
.add-level-item {
    padding: 0;
    background: #b9f561;
    border-left: 3px solid #eada61;
    border-radius: 4px;
    transition: all 0.3s;
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    font-size: 11px;
}

.add-level-item:hover {
    background: #a8e450;
    border-left-color: #d9c950;
}

.add-level-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 4px;
    cursor: pointer;
}

.add-level-content:hover {
    background: rgba(185, 245, 97, 0.2);
}

/* 拖拽提示 */
.drag-tip {
    font-size: 11px;
    color: #666;
    padding: 8px;
    background: #fff3cd;
    border-radius: 4px;
    margin-bottom: 10px;
    text-align: center;
}

/* 编辑模式下的样式 */
.edit-mode .drag-handle {
    cursor: move;
    opacity: 1;
}

/* 响应式设计：移动端 */
@media (pointer: coarse) {
    .level-list {
    }
    
    .level-item {
        font-size: 12px; /* iOS优化：稍微减小字体避免自动放大 */
        min-height: 48px;
        /* iOS Safari优化 */
        -webkit-text-size-adjust: none;
    }
    
    .level-content {
        /* 增大触摸区域，改善iOS点击体验 */
        padding: 12px 4px;
    }
    
    .drag-handle {
        font-size: 18px;
        padding: 8px;
        min-width: 32px; /* iOS优化：增大触摸区域 */
    }
}

/* 平滑过渡动画 */
.level-item {
    transition: transform 0.2s, box-shadow 0.2s, background 0.3s, opacity 0.3s;
}