/* 隐藏滚动条但保留滚动功能 */
.hide-scrollbar::-webkit-scrollbar { display: none; }
.hide-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

/* 拖拽项排序时的占位样式 */
.drag-over { border: 2px dashed #3b82f6 !important; background-color: #eff6ff !important; }
.dragging { opacity: 0.5; }

/* Loading 旋转动画 */
.loader-anim { border: 3px solid #e5e7eb; border-top: 3px solid #3b82f6; border-radius: 50%; width: 36px; height: 36px; animation: spin 1s linear infinite; }
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

/* 移动端特殊处理：允许子区域不被隐藏 */
@media (max-width: 768px) {
    #file-list-container {
        max-height: 300px;
    }
}