/**
 * 苏格导航 - 后台管理样式
 * 紫粉渐变主题，响应式设计
 */

/* ============================================
   CSS 变量定义
   ============================================ */
:root {
    /* 主色调 - 紫粉渐变 */
    --primary-color: #a855f7;
    --secondary-color: #ec4899;
    --gradient-start: #667eea;
    --gradient-end: #f093fb;
    
    /* 背景色 */
    --bg-primary: linear-gradient(135deg, #667eea 0%, #f093fb 100%);
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-header: rgba(255, 255, 255, 0.95);
    --bg-input: rgba(255, 255, 255, 0.8);
    
    /* 文字颜色 */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.8);
    
    /* 边框 */
    --border-color: rgba(255, 255, 255, 0.2);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    
    /* 过渡 */
    --transition: all 0.3s ease;
}

/* ============================================
   后台管理布局
   ============================================ */
body {
    min-height: 100vh;
    background: var(--bg-primary);
    background-attachment: fixed;
}

/* 顶部导航栏 */
.admin-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.admin-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-logo-icon {
    font-size: 28px;
    color: var(--primary-color);
}

.admin-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-light);
}

.admin-header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* 管理主区域 */
.admin-container {
    padding-top: 60px;
    display: flex;
    min-height: 100vh;
}

/* 左侧菜单 */
.admin-sidebar {
    width: 220px;
    flex-shrink: 0;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    padding: 20px 0;
}

.admin-nav-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 0 12px;
}

.admin-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    color: var(--text-muted);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.admin-nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
}

.admin-nav-item.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-light);
}

.admin-nav-item i {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

/* 右侧内容区 */
.admin-content {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
}

.admin-tab {
    display: none;
}

.admin-tab.active {
    display: block;
}

/* 管理区块 */
.admin-section {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 24px;
    margin-bottom: 24px;
}

.admin-section-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.admin-section-title i {
    color: var(--primary-color);
}

.section-header-with-action {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.section-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* ============================================
   表单组件
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid rgba(168, 85, 247, 0.2);
    border-radius: var(--border-radius-sm);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.form-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.1);
}

.form-tip {
    font-size: 12px;
    color: var(--text-secondary);
}

.form-hint {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: normal;
}
    margin-top: 6px;
}

.input-with-preview {
    display: flex;
    align-items: center;
    gap: 12px;
}

.input-with-preview .form-input {
    flex: 1;
}

.input-preview {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid rgba(168, 85, 247, 0.2);
}

.input-preview.large {
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius-sm);
}

/* 单选按钮组 */
.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary);
}

.radio-label input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

/* 复选框 */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

/* ============================================
   按钮
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-light);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(168, 85, 247, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-light);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: var(--text-light);
}

.btn-danger:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

/* ============================================
   分类管理
   ============================================ */
.categories-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.category-item {
    background: rgba(168, 85, 247, 0.05);
    border: 1px solid rgba(168, 85, 247, 0.1);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    cursor: pointer;
    transition: var(--transition);
}

.category-header:hover {
    background: rgba(168, 85, 247, 0.08);
}

.category-drag-handle {
    color: var(--text-secondary);
    cursor: grab;
}

.category-drag-handle:active {
    cursor: grabbing;
}

.category-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius-sm);
    color: var(--text-light);
    font-size: 16px;
}

.category-name {
    flex: 1;
    font-weight: 500;
    color: var(--text-primary);
}

.category-count {
    font-size: 13px;
    color: var(--text-secondary);
}

.category-actions {
    display: flex;
    gap: 8px;
    opacity: 0;
    transition: var(--transition);
}

.category-item:hover .category-actions {
    opacity: 1;
}

.category-action-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: 16px;
    transition: var(--transition);
    background: transparent;
}

.category-action-btn:hover {
    background: rgba(168, 85, 247, 0.1);
    color: var(--primary-color);
}

.category-action-btn.delete:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.category-expand {
    transition: transform 0.2s ease;
    cursor: pointer;
}

.category-item.expanded .category-expand {
    transform: rotate(180deg);
}

/* 分类内容区域 - 默认隐藏 */
.category-content {
    display: none;
    padding: 0 16px 16px 60px;
    border-top: 1px solid rgba(168, 85, 247, 0.1);
}

/* 展开时显示 */
.category-item.expanded .category-content {
    display: block;
}

/* 链接列表 */
.links-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-top: 12px;
}

/* 单个链接项 */
.link-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--border-radius-sm);
    cursor: grab;
}

.link-item:active {
    cursor: grabbing;
}

.link-drag-handle {
    color: var(--text-secondary);
    cursor: grab;
}

.link-drag-handle:active {
    cursor: grabbing;
}

.link-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.link-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 4px;
}

.link-info {
    flex: 1;
    min-width: 0;
}

.link-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.link-url {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.link-actions {
    display: flex;
    gap: 4px;
    opacity: 0;
    transition: var(--transition);
}

.link-item:hover .link-actions {
    opacity: 1;
}

/* 添加链接按钮 */
.add-link-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px;
    margin-top: 12px;
    border: 2px dashed rgba(168, 85, 247, 0.3);
    border-radius: var(--border-radius-sm);
    color: var(--primary-color);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
    background: transparent;
    width: 100%;
}

.add-link-btn:hover {
    background: rgba(168, 85, 247, 0.05);
    border-color: var(--primary-color);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 24px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 32px;
    margin-bottom: 8px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 13px;
}

/* 图标按钮 */
.btn-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    background: transparent;
    border: none;
}

.btn-icon:hover {
    background: rgba(168, 85, 247, 0.1);
    color: var(--primary-color);
}

.btn-icon.delete:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.category-links {
    display: none;
    padding: 0 16px 16px 60px;
    border-top: 1px solid rgba(168, 85, 247, 0.1);
}

.category-item.expanded .category-links {
    display: block;
}

.category-links-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-top: 12px;
}

.category-link-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--border-radius-sm);
}

.category-link-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--primary-color);
}

.category-link-info {
    flex: 1;
    min-width: 0;
}

.category-link-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.category-link-desc {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.add-link-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px;
    margin-top: 12px;
    border: 2px dashed rgba(168, 85, 247, 0.3);
    border-radius: var(--border-radius-sm);
    color: var(--primary-color);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
    background: transparent;
    width: 100%;
}

.add-link-btn:hover {
    background: rgba(168, 85, 247, 0.05);
    border-color: var(--primary-color);
}

/* ============================================
   广告管理
   ============================================ */
.admin-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.admin-tab-btn {
    padding: 10px 20px;
    background: rgba(168, 85, 247, 0.05);
    border: 1px solid rgba(168, 85, 247, 0.1);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.admin-tab-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-light);
    border-color: transparent;
}

.admin-tab-content {
    display: none;
}

.admin-tab-content.active {
    display: block;
}

.ads-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.ad-card {
    background: rgba(168, 85, 247, 0.05);
    border: 1px solid rgba(168, 85, 247, 0.1);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
}

.ad-card:hover {
    border-color: rgba(168, 85, 247, 0.3);
    box-shadow: var(--shadow-md);
}

.ad-card-image {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
}

.ad-card-content {
    padding: 14px;
}

.ad-card-title {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ad-card-url {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 12px;
}

.ad-card-actions {
    display: flex;
    gap: 8px;
}

.add-ad-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    min-height: 200px;
    border: 2px dashed rgba(168, 85, 247, 0.3);
    border-radius: var(--border-radius);
    color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition);
    background: rgba(168, 85, 247, 0.02);
}

.add-ad-card:hover {
    background: rgba(168, 85, 247, 0.05);
    border-color: var(--primary-color);
}

.add-ad-card i {
    font-size: 32px;
}

/* ============================================
   配色方案
   ============================================ */
.preset-colors {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px;
}

.preset-color-item {
    padding: 16px 12px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

.preset-color-item:hover {
    transform: translateY(-2px);
}

.preset-color-item.active {
    border-color: var(--primary-color);
}

.preset-color-preview {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin: 0 auto 8px;
}

.preset-color-name {
    font-size: 12px;
    color: var(--text-primary);
    font-weight: 500;
}

.color-inputs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.color-input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.color-input-group > label {
    font-size: 13px;
    color: var(--text-secondary);
}

.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.color-picker {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    padding: 2px;
    background: white;
}

.color-text {
    flex: 1;
}

/* 主题预览 */
.theme-preview {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid rgba(168, 85, 247, 0.1);
}

.theme-preview h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.preview-box {
    padding: 20px;
    border-radius: var(--border-radius);
    background: rgba(168, 85, 247, 0.05);
}

.preview-header {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.preview-card {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: white;
    border-radius: var(--border-radius-sm);
    margin-bottom: 16px;
}

.preview-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 8px;
}

.preview-text {
    flex: 1;
}

.preview-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.preview-desc {
    font-size: 12px;
    color: var(--text-secondary);
}

.preview-btn {
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 14px;
    cursor: pointer;
}

/* ============================================
   数据管理
   ============================================ */
.data-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.data-action-card {
    padding: 24px;
    background: rgba(168, 85, 247, 0.05);
    border: 1px solid rgba(168, 85, 247, 0.1);
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
}

.data-action-card:hover {
    border-color: rgba(168, 85, 247, 0.3);
    box-shadow: var(--shadow-md);
}

.data-action-card.danger {
    border-color: rgba(239, 68, 68, 0.2);
}

.data-action-card.danger:hover {
    border-color: rgba(239, 68, 68, 0.4);
}

.data-action-card i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.data-action-card.danger i {
    color: #ef4444;
}

.data-action-card h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.data-action-card p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.file-input-wrapper {
    display: inline-block;
}

/* ============================================
   生成静态页
   ============================================ */
.export-info {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--border-radius);
    margin-bottom: 24px;
}

.export-info-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.2);
    border-radius: 50%;
    flex-shrink: 0;
}

.export-info-icon i {
    font-size: 24px;
    color: #3b82f6;
}

.export-info-content h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.export-info-content p {
    font-size: 14px;
    color: var(--text-secondary);
}

.export-options {
    margin-bottom: 24px;
}

.export-option {
    margin-bottom: 12px;
}

.export-actions {
    text-align: center;
    margin-bottom: 24px;
}

.export-output {
    padding: 16px;
    background: rgba(168, 85, 247, 0.05);
    border-radius: var(--border-radius-sm);
    font-family: monospace;
    font-size: 13px;
    color: var(--text-secondary);
    white-space: pre-wrap;
    max-height: 300px;
    overflow-y: auto;
}

/* ============================================
   模态框
   ============================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: white;
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid rgba(168, 85, 247, 0.1);
}

.modal-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition);
    background: transparent;
}

.modal-close:hover {
    background: rgba(168, 85, 247, 0.1);
    color: var(--primary-color);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid rgba(168, 85, 247, 0.1);
}

/* 图标选择器 */
.icon-selector {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 8px;
    max-height: 200px;
    overflow-y: auto;
    padding: 8px;
    border: 1px solid rgba(168, 85, 247, 0.2);
    border-radius: var(--border-radius-sm);
}

.icon-option {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
}

.icon-option:hover {
    background: rgba(168, 85, 247, 0.1);
    color: var(--primary-color);
}

.icon-option.selected {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

/* 链接图标标签页 */
.link-icon-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.link-icon-tab {
    padding: 8px 16px;
    background: rgba(168, 85, 247, 0.05);
    border: 1px solid rgba(168, 85, 247, 0.1);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
}

.link-icon-tab.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-color: transparent;
}

.link-icon-content {
    display: none;
}

.link-icon-content.active {
    display: block;
}

/* ============================================
   提示消息
   ============================================ */
.toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 50px;
    box-shadow: var(--shadow-lg);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    z-index: 3000;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast i {
    font-size: 20px;
    color: #10b981;
}

.toast.error i {
    color: #ef4444;
}

/* ============================================
   登录界面
   ============================================ */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #667eea 0%, #f093fb 100%);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-overlay.hidden {
    display: none;
}

.login-box {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 48px 40px;
    text-align: center;
    max-width: 400px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    animation: loginFadeIn 0.5s ease;
}

@keyframes loginFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.login-icon i {
    font-size: 40px;
    color: white;
}

.login-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.login-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.login-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    background: linear-gradient(135deg, #c71d23, #e53935);
    color: white;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    margin-bottom: 16px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(199, 29, 35, 0.3);
}

.login-btn i {
    font-size: 20px;
}

.login-hint {
    font-size: 12px;
    color: var(--text-secondary);
}

/* 加载中遮罩 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 10001;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.loading-overlay.hidden {
    display: none;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(168, 85, 247, 0.2);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-overlay p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 992px) {
    .admin-sidebar {
        display: none;
    }
    
    .admin-content {
        padding: 16px;
    }
    
    .admin-section {
        padding: 16px;
    }
    
    .icon-selector {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .color-inputs {
        grid-template-columns: 1fr;
    }
    
    .data-actions {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .admin-header {
        padding: 0 16px;
    }
    
    .admin-title {
        display: none;
    }
    
    .admin-header-right .btn span {
        display: none;
    }
    
    .admin-section {
        padding: 16px;
    }
    
    .categories-list {
        gap: 8px;
    }
    
    .category-actions {
        opacity: 1;
    }
    
    .icon-selector {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .color-inputs {
        grid-template-columns: 1fr;
    }
    
    .data-actions {
        grid-template-columns: 1fr;
    }
}

.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}