/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 30%, #90caf9 70%, #64b5f6 100%);
    min-height: 100vh;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 20px 0;
}

.container {
    display: flex;
    height: calc(100vh - 40px);
    max-width: 1400px;
    width: 100%;
    margin: 0 20px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(36, 172, 242, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

/* 左侧栏样式 */
.sidebar {
    width: 350px;
    background: linear-gradient(180deg, #f8fbff 0%, #f0f8ff 100%);
    border-right: 1px solid rgba(36, 172, 242, 0.1);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 20px;
    background: linear-gradient(135deg, #24acf2, #1e90d4);
    color: white;
}

.sidebar-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.header-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.sidebar-header .btn-primary {
    background: white;
    color: #24acf2;
    border-color: rgba(255, 255, 255, 0.3);
    font-weight: 600;
}

.sidebar-header .btn-primary:hover {
    background: #f8f9fa;
    color: #1e90d4;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.3);
}

.sidebar-header .btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
    width: 48px;
    height: 48px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-header .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    color: white;
    transform: translateY(-2px);
}

.sidebar-header .btn-edit {
    background: rgb(255, 207, 72);
    color: #333;
    border-color: rgba(255, 207, 72, 0.5);
    width: 48px;
    height: 48px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-header .btn-edit:hover {
    background: rgba(255, 207, 72, 0.8);
    color: #333;
    border-color: rgba(255, 207, 72, 0.8);
    transform: translateY(-2px);
}

.search-container {
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid rgba(36, 172, 242, 0.1);
    position: relative;
}

.search-container input {
    width: 100%;
    padding: 10px 40px 10px 15px;
    border: 1px solid #ddd;
    border-radius: 25px;
    font-size: 14px;
    outline: none;
    transition: all 0.3s ease;
}

.search-container input:focus {
    border-color: #24acf2;
    box-shadow: 0 0 0 3px rgba(36, 172, 242, 0.1);
}

.search-icon {
    position: absolute;
    right: 35px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
}

.folder-tree {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.loading {
    text-align: center;
    padding: 40px 20px;
    color: #666;
}

.folder-item, .clipboard-item {
    padding: 12px 15px;
    margin: 5px 0;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}

.folder-item {
    background: #fff;
    border: 1px solid #e9ecef;
}

.folder-item:hover {
    background: #f8f9fa;
    transform: translateX(5px);
}

.folder-item.active {
    background: #24acf2;
    color: white;
    border-left-color: #1e90d4;
}

.clipboard-item {
    background: #fff;
    border: 1px solid #e9ecef;
    margin-left: 20px;
}

.clipboard-item:hover {
    background: #f8f9fa;
    border-color: #24acf2;
}

.clipboard-item.active {
    background: #ebf3fd;
    border-color: #24acf2;
}

.item-title {
    font-weight: 600;
    margin-bottom: 5px;
    font-size: 14px;
}

.item-preview {
    font-size: 12px;
    color: #666;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.item-meta {
    font-size: 11px;
    color: #999;
    margin-top: 5px;
}

.sidebar-footer {
    padding: 15px 20px;
    border-top: 1px solid rgba(36, 172, 242, 0.1);
    background: rgba(255, 255, 255, 0.8);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: #666;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #28a745;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* 主内容区样式 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: white;
}

.content-header {
    padding: 20px 30px;
    border-bottom: 1px solid #e9ecef;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f8f9fa;
}

.content-header h2 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #333;
}

.header-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 5px;
}

.header-info span {
    font-size: 12px;
    color: #666;
}

.input-area {
    padding: 30px;
    background: white;
    border-bottom: 1px solid #e9ecef;
}

.input-container {
    max-width: 800px;
}

.input-container input,
.input-container textarea,
.input-container select {
    width: 100%;
    padding: 15px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: all 0.3s ease;
    margin-bottom: 15px;
}

.input-container input:focus,
.input-container textarea:focus,
.input-container select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-container textarea {
    resize: both;
    transition: none !important;
}

.input-container textarea:hover,
.input-container textarea:focus {
    transition: none !important;
}

.input-container textarea.drag-over {
    border-color: #24acf2;
    background-color: rgba(36, 172, 242, 0.05);
    box-shadow: 0 0 10px rgba(36, 172, 242, 0.2);
}

.input-actions {
    display: flex;
    gap: 15px;
    align-items: center;
}

.input-actions select,
.input-actions .btn,
.input-actions label.btn {
    margin-bottom: 0;
    height: 44px;
    display: flex;
    align-items: center;
}

.input-actions select {
    flex: 1;
    max-width: 200px;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
    padding: 0 30px 0 15px;
    line-height: normal;
    text-align: left;
    justify-content: flex-start;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
}

.input-actions select::-ms-expand {
    display: none;
}

.input-actions select option {
    white-space: normal;
    overflow: visible;
    text-align: left;
    padding: 5px;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
    text-align: center;
    white-space: nowrap;
    outline: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.btn-primary {
    background: #24acf2;
    color: white;
    border-color: #1e90d4;
}

.btn-primary:hover {
    background: #1e90d4;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(36, 172, 242, 0.2);
}

.btn-secondary {
    background: #eef2f7;
    color: #4a5568;
    border-color: #e2e8f0;
}

.btn-secondary:hover {
    background: #e2e8f0;
    color: #2d3748;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.btn-danger {
    background: #f56565;
    color: white;
    border-color: #e53e3e;
}

.btn-danger:hover {
    background: #e53e3e;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(229, 62, 62, 0.2);
}

.btn-outline {
    background: transparent;
    color: #24acf2;
    border-color: #24acf2;
}

.btn-outline:hover {
    background: #ebf8ff;
    color: #1e90d4;
    border-color: #1e90d4;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(36, 172, 242, 0.1);
}

/* 内容项目容器 */
.items-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px 30px;
}

.content-item {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 15px;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.content-item:hover {
    border-color: #24acf2;
    box-shadow: 0 5px 15px rgba(36, 172, 242, 0.2);
    transform: translateY(-2px);
}

.content-item:hover::after {
    content: "点击卡片复制内容";
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(36, 172, 242, 0.8);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    opacity: 0.9;
}

/* 复制成功时的动画效果 */
.content-item.copied {
    animation: copy-flash 0.5s ease;
}

@keyframes copy-flash {
    0% { background-color: white; }
    50% { background-color: rgba(36, 172, 242, 0.2); }
    100% { background-color: white; }
}

.content-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.content-item-title {
    font-weight: 600;
    font-size: 16px;
    color: #333;
    margin-bottom: 5px;
}

.content-item-meta {
    font-size: 12px;
    color: #999;
}

.content-item-actions {
    display: flex;
    gap: 10px;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.content-item-content {
    color: #555;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

.action-btn {
    padding: 5px 10px;
    border: none;
    border-radius: 5px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.copy-btn {
    background: #28a745;
    color: white;
}

.copy-btn:hover {
    background: #218838;
}

.edit-btn {
    background: #ffc107;
    color: #212529;
}

.edit-btn:hover {
    background: #e0a800;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid #e9ecef;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #333;
}

.modal-close {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: #999;
    padding: 5px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: #f8f9fa;
    color: #333;
}

.modal-body {
    padding: 25px;
}

.folder-name-label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: #333;
}

.modal-body input,
.modal-body textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: all 0.3s ease;
    margin-bottom: 15px;
}

.modal-body input:focus,
.modal-body textarea:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.color-picker {
    margin-top: 15px;
}

.color-picker label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: #333;
}

.color-options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.color-option {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all 0.3s ease;
}

.color-option:hover {
    transform: scale(1.1);
}

.color-option.selected {
    border-color: #333;
    transform: scale(1.1);
}

.modal-footer {
    padding: 20px 25px;
    border-top: 1px solid #e9ecef;
    display: flex;
    justify-content: flex-end;
    gap: 15px;
}

/* 通知样式 */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 20px;
    background: #28a745;
    color: white;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    z-index: 1001;
    transform: translateX(400px);
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.notification.show {
    transform: translateX(0);
}

.notification.error {
    background: #dc3545;
}

.notification.warning {
    background: #ffc107;
    color: #212529;
}

/* 文件夹下拉选择框 */
.folder-dropdown {
    margin-bottom: 20px;
}

.folder-dropdown label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

.folder-select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: all 0.3s ease;
    background-color: #fff;
    cursor: pointer;
}

.folder-select:focus {
    border-color: #24acf2;
    box-shadow: 0 0 0 3px rgba(36, 172, 242, 0.1);
}

/* 移动端选择文件夹按钮 */
.mobile-only {
    display: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 10px 0;
        overflow-x: hidden;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch; /* 提升iOS设备的滚动体验 */
    }

    .container {
        flex-direction: column;
        margin: 0 10px;
        border-radius: 15px;
        height: auto;
        min-height: calc(100vh - 20px);
        max-height: none;
        overflow: visible;
    }
    
    .sidebar {
        width: 100%;
        max-height: none;
        overflow: visible;
    }
    
    /* 在移动端隐藏文件夹树区域 */
    .folder-tree {
        display: none;
    }
    
    /* 调整sidebar-footer在移动端的边距，因为folder-tree被隐藏了 */
    .sidebar-footer {
        margin-top: 0;
        border-top: none;
    }
    
    .main-content {
        flex: none;
        height: auto;
        overflow: visible;
    }
    
    .items-container {
        max-height: none;
        padding: 15px 20px;
    }
    
    .mobile-only {
        display: inline-flex;
    }
    
    /* 调整所有按钮的高度 */
    .sidebar-header .btn-primary,
    .sidebar-header .btn-edit,
    .sidebar-header .btn-secondary {
        height: 42px;
        padding: 0 6px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* 编辑和刷新按钮的宽度 */
    .sidebar-header .btn-edit,
    .sidebar-header .btn-secondary {
        width: 42px;
        min-width: 42px;
        padding: 0;
    }
    
    
    .header-actions {
        gap: 6px;
        flex-wrap: wrap;
    }
    
    /* 修复content-header布局 */
    .content-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 15px 20px;
    }
    
    /* 适应移动端的标题和信息区域 */
    .content-header h2 {
        font-size: 1.5rem;
        flex: 1;
    }
    
    .header-info {
        flex-direction: column;
        align-items: flex-end;
        flex: 0 0 auto;
    }
    
    .input-area {
        padding: 20px;
    }
    
    .input-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .input-actions select,
    .input-actions .btn,
    .input-actions label.btn {
        height: 44px;
        max-width: none;
        width: 100%;
    }
    
    .input-actions select {
        max-width: none;
    }
    
    /* 确保所有按钮在移动端的高度和样式一致 */
    .btn, 
    select,
    .input-actions label.btn {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* 文件夹选择列表移动端样式 */
    .folder-select-list {
        max-height: 60vh;
    }
    
    .folder-select-item {
        padding: 16px 15px;
    }
    
    .folder-select-item i {
        font-size: 1.4rem;
    }
    
    .folder-select-item span {
        font-size: 16px;
    }
    
    #selectFolderModal .modal-content {
        width: 95%;
        max-width: 450px;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 文件夹选择列表 */
.folder-select-list {
    margin-top: 15px;
    max-height: 300px;
    overflow-y: auto;
}

.folder-select-item {
    padding: 12px 15px;
    margin: 5px 0;
    border-radius: 8px;
    background: #fff;
    border: 1px solid #e9ecef;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
}

.folder-select-item:hover {
    background: #f8f9fa;
    transform: translateX(5px);
}

.folder-select-item i {
    font-size: 1.2rem;
}

.folder-select-item span {
    font-weight: 500;
}

.folder-item-count {
    position: absolute;
    right: 15px;
    font-size: 12px;
    color: #999;
}

/* 附件样式 */
.attachment-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 38px;
    padding: 0 15px;
    background: #f1f1f1;
    border: 1px solid #ddd;
    border-radius: 4px;
    color: #333;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-right: 10px;
}

.attachment-button:hover {
    background: #e9e9e9;
}

.attachment-button i {
    margin-right: 5px;
}

.attachment-preview {
    margin: 10px 0;
    padding: 10px;
    background: #f9f9f9;
    border: 1px solid #eee;
    border-radius: 4px;
    display: flex;
    align-items: center;
}

.attachment-preview img {
    max-width: 100%;
    max-height: 200px;
    margin-top: 10px;
    border-radius: 4px;
}

.attachment-info {
    flex-grow: 1;
    padding-left: 10px;
}

.attachment-info .file-name {
    font-weight: 500;
    color: #333;
    word-break: break-all;
}

.attachment-info .file-meta {
    color: #777;
    font-size: 12px;
    margin-top: 3px;
}

.attachment-actions {
    display: flex;
}

.attachment-actions button {
    background: none;
    border: none;
    color: #777;
    cursor: pointer;
    padding: 5px;
    font-size: 14px;
}

.attachment-actions button:hover {
    color: #333;
}

.hidden-file-input {
    display: none;
}

.content-item-attachment {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid #eee;
}

.content-item-attachment .file-icon {
    margin-right: 5px;
    color: #555;
}

.content-item-attachment .file-info {
    display: flex;
    align-items: center;
}

.content-item-attachment .file-name {
    font-size: 14px;
    color: #1a73e8;
    text-decoration: none;
    max-width: 80%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.content-item-attachment .file-name:hover {
    text-decoration: underline;
}

.content-item-attachment .file-size {
    font-size: 12px;
    color: #777;
    margin-left: 10px;
}

.content-item-attachment img.attachment-thumbnail {
    max-width: 100%;
    max-height: 150px;
    margin-top: 5px;
    border-radius: 4px;
    border: 1px solid #eee;
}

.attachment-thumbnail-container {
    margin-top: 10px;
    position: relative;
    display: inline-block;
}

.attachment-thumbnail-container .zoom-icon {
    position: absolute;
    right: 10px;
    top: 10px;
    background: rgba(0,0,0,0.5);
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

/* 图片预览模态框 */
.image-preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.85);
    z-index: 1000;
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.image-preview-modal.show {
    display: flex;
}

.image-preview-content {
    position: relative;
    max-width: 90%;
    max-height: 80vh;
}

.image-preview-content img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: 4px;
}

.image-preview-close {
    position: absolute;
    top: -40px;
    right: -10px;
    color: white;
    font-size: 30px;
    cursor: pointer;
    background: none;
    border: none;
    z-index: 1001;
}

.image-preview-download {
    margin-top: 20px;
    background: rgba(255,255,255,0.2);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
}

.image-preview-download i {
    margin-right: 8px;
}

.image-preview-download:hover {
    background: rgba(255,255,255,0.3);
}

/* 文件夹拖拽相关样式 */
.folder-item {
    position: relative;
    cursor: pointer;
    padding: 10px 15px;
    border-left: 3px solid transparent;
    transition: background-color 0.2s, transform 0.2s;
    display: flex;
    flex-direction: column;
    user-select: none;
}

.folder-drag-handle {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s;
    color: #999;
    cursor: grab;
}

.folder-item:hover .folder-drag-handle {
    opacity: 0.7;
}

/* 拖拽禁用状态样式 */
.folder-item.drag-disabled {
    cursor: default;
}

.folder-item.drag-disabled:hover .folder-drag-handle {
    opacity: 0.2;
    cursor: not-allowed;
}

/* 拖拽目标样式 */
.folder-item.drag-target {
    transition: all 0.2s;
    outline: 1px dashed transparent;
}

.folder-item.drag-target:hover {
    outline: 1px dashed #3498db;
    background-color: rgba(36, 172, 242, 0.05);
}

.folder-item.dragging {
    opacity: 0.7;
    background-color: rgba(36, 172, 242, 0.2); /* 淡蓝色背景 */
    box-shadow: 0 4px 12px rgba(36, 172, 242, 0.3); /* 加强阴影效果 */
    border-radius: 4px;
    z-index: 1000;
    transform: scale(1.02); /* 轻微放大效果 */
}

/* 增强放置位置指示器样式 */
.folder-item.drop-above {
    border-top: 2px solid #3498db;
    padding-top: 8px;
    position: relative;
    background-color: rgba(52, 152, 219, 0.08);
}

.folder-item.drop-above::before {
    content: "";
    position: absolute;
    top: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: #3498db;
    animation: pulse-border 1s infinite;
    z-index: 2;
}

.folder-item.drop-below {
    border-bottom: 2px solid #3498db;
    padding-bottom: 8px;
    position: relative;
    background-color: rgba(52, 152, 219, 0.08);
}

.folder-item.drop-below::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: #3498db;
    animation: pulse-border 1s infinite;
    z-index: 2;
}

@keyframes pulse-border {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

/* 调整文件夹内容的布局 */
.folder-item .item-title {
    display: flex;
    align-items: center;
    padding-left: 15px; /* 为拖动图标留出空间 */
    font-weight: 500;
    margin-bottom: 3px;
}

.folder-item .item-meta {
    padding-left: 15px;
    font-size: 12px;
    color: #999;
}

/* 置顶文件夹图标样式 */
.folder-item .fa-thumbtack {
    color: #f39c12;
    transform: rotate(45deg);
}

/* 开关标签样式 */
.switch-label {
    font-weight: 500;
}