/* ======================
   管理后台样式
   ====================== */

/* 全局变量 */
:root {
    --primary-color: #4A90E2;
    --primary-dark: #357ABD;
    --primary-light: #E8F0FE;
    --secondary-color: #5C6AC4;
    --success-color: #43B581;
    --warning-color: #FAA61A;
    --danger-color: #F04747;
    --text-primary: #202124;
    --text-secondary: #5F6368;
    --text-muted: #9AA0A6;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-hover: #F1F3F4;
    --border-color: #DADCE0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --sidebar-width: 260px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    line-height: 1.6;
    font-size: 14px;
}

/* 登录页面 */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.login-header {
    text-align: center;
    padding: 40px 32px 32px;
    background: linear-gradient(135deg, var(--primary-light) 0%, white 100%);
}

.login-header i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.login-header h1 {
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

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

.login-form {
    padding: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group label i {
    color: var(--primary-color);
}

/* 通用表单输入样式 */
.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="url"],
.form-group input[type="file"],
.form-group select,
.form-group textarea,
.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: all 0.2s;
    font-family: inherit;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="password"]:focus,
.form-group input[type="number"]:focus,
.form-group input[type="url"]:focus,
.form-group select:focus,
.form-group textarea:focus,
.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.form-group input[type="file"] {
    padding: 8px 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-block {
    width: 100%;
}

.login-footer {
    padding: 24px 32px;
    background: var(--bg-secondary);
    text-align: center;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 16px;
}

.back-link:hover {
    text-decoration: underline;
}

.login-hint {
    padding: 12px;
    background: var(--warning-color);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 13px;
}

.login-hint p {
    margin: 0;
}

/* 提示框 */
.alert {
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert i {
    font-size: 18px;
}

.alert-error {
    background: #FFEBEE;
    color: #C62828;
    border: 1px solid #EF9A9A;
}

.alert-success {
    background: #E8F5E9;
    color: #2E7D32;
    border: 1px solid #A5D6A7;
}

.alert a {
    color: inherit;
    font-weight: 600;
    text-decoration: underline;
}

/* 侧边栏 */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-md);
    z-index: 1000;
}

.sidebar-header {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header i {
    font-size: 28px;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.nav-item.active {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border-left-color: white;
}

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

.nav-item .badge {
    margin-left: auto;
    background: #f04747;
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    min-width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.9);
}

.user-info i {
    font-size: 32px;
}

/* 管理布局容器 */
.admin-container {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: transform 0.3s ease;
}

.admin-sidebar.collapsed {
    transform: translateX(calc(-1 * var(--sidebar-width) + 60px));
}

.admin-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    background: var(--bg-secondary);
    transition: margin-left 0.3s ease;
}

.admin-container.sidebar-collapsed .admin-main {
    margin-left: 60px;
}

/* 主内容区 */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

/* 顶部栏 */
.topbar {
    background: var(--bg-primary);
    padding: 16px 32px;
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 900;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.menu-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.menu-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.page-path {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.page-path i {
    color: var(--primary-color);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.topbar-link {
    color: var(--text-secondary);
    font-size: 18px;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    text-decoration: none;
}

.topbar-link:hover {
    background: var(--bg-hover);
    color: var(--primary-color);
}

.user-menu {
    position: relative;
}

.user-menu-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-primary);
}

.user-menu-btn:hover {
    background: var(--bg-hover);
    border-color: var(--primary-color);
}

.user-menu-btn i.fa-user-circle {
    font-size: 20px;
    color: var(--primary-color);
}

.user-menu-btn i.fa-chevron-down {
    font-size: 12px;
    color: var(--text-secondary);
    transition: transform 0.2s;
}

.user-menu-btn:hover i.fa-chevron-down {
    transform: rotate(180deg);
}

.user-menu-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    min-width: 200px;
    display: none;
    z-index: 1000;
}

.user-menu-dropdown.show {
    display: block;
}

.user-menu-dropdown .dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s;
    border-bottom: 1px solid var(--border-color);
}

.user-menu-dropdown .dropdown-item:last-child {
    border-bottom: none;
}

.user-menu-dropdown .dropdown-item:hover {
    background: var(--bg-hover);
    color: var(--danger-color);
}

.user-menu-dropdown .dropdown-item i {
    font-size: 16px;
    color: var(--text-secondary);
}

.user-menu-dropdown .dropdown-item:hover i {
    color: var(--danger-color);
}

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

.topbar-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.logout-btn {
    color: var(--danger-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.logout-btn:hover {
    background: #FFEBEE;
}

/* 内容包装器 */
.content-wrapper {
    padding: 32px;
}

/* 页面头部 */
.page-header {
    margin-bottom: 32px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.page-header h1 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

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

.page-header-actions,
.page-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: 20px;
    align-items: center;
    transition: all 0.2s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.stat-info {
    flex: 1;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 8px;
    color: var(--text-primary);
}

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

/* 仪表板网格 */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

/* 管理页面头部 */
.admin-header {
    padding: 32px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    flex-wrap: wrap;
}

.admin-header h1 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-header h1 i {
    color: var(--primary-color);
}

.admin-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
}

/* 卡片 */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin: 24px 32px;
}

.dashboard-card {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-header i {
    color: var(--primary-color);
}

.card-body {
    padding: 24px;
}

/* 分类统计 */
.category-stats {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.category-stat-item {
}

.category-stat-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 14px;
}

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

.category-count {
    color: var(--text-secondary);
}

.progress-bar {
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width 0.3s ease;
}

/* 最近应用 */
.recent-apps {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.recent-app-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.recent-app-item:hover {
    background: var(--primary-light);
}

.recent-app-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
}

.recent-app-info {
    flex: 1;
}

.recent-app-name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.recent-app-meta {
    display: flex;
    gap: 12px;
    align-items: center;
}

.recent-app-date {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
}

.recent-app-actions {
    display: flex;
    gap: 8px;
}

/* 徽章 */
.badge {
    display: inline-block;
    padding: 4px 10px;
    background: var(--primary-light);
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: #E8F5E9;
    color: var(--success-color);
}

.badge-secondary {
    background: var(--bg-secondary);
    color: var(--text-muted);
}

/* 表格 */
.table-responsive {
    overflow-x: auto;
}

/* 通用表格样式 */
.table-responsive table,
table {
    width: 100%;
    border-collapse: collapse;
}

.table-responsive table thead,
table thead {
    background: var(--bg-secondary);
}

.table-responsive table th,
table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table-responsive table td,
table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.table-responsive table tbody tr:hover,
table tbody tr:hover {
    background: var(--bg-secondary);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: var(--bg-secondary);
}

.data-table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.data-table tbody tr:hover {
    background: var(--bg-secondary);
}

.app-name-cell {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-name-cell img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
}

.app-name-cell span {
    font-weight: 500;
}

.rating-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--warning-color);
    font-weight: 600;
}

.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-weight: 700;
    font-size: 14px;
}

.rank-1 {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: white;
}

.rank-2 {
    background: linear-gradient(135deg, #C0C0C0, #A8A8A8);
    color: white;
}

.rank-3 {
    background: linear-gradient(135deg, #CD7F32, #B8860B);
    color: white;
}

.rank-other {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

/* 操作按钮 */
.action-buttons {
    display: flex;
    gap: 8px;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.btn-icon:hover {
    background: var(--primary-light);
    color: var(--primary-color);
}

.btn-icon.btn-danger:hover {
    background: #FFEBEE;
    color: var(--danger-color);
}

.btn-icon.btn-success {
    background: #E8F5E9;
    color: var(--success-color);
}

.btn-icon.btn-success:hover {
    background: #C8E6C9;
    color: #2E7D32;
}

.btn-icon.btn-warning {
    background: #FFF3E0;
    color: var(--warning-color);
}

.btn-icon.btn-warning:hover {
    background: #FFE0B2;
    color: #E65100;
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
}

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

.btn-large {
    padding: 14px 28px;
    font-size: 15px;
}

/* 筛选栏 */
.filter-bar {
    background: var(--bg-primary);
    padding: 20px 24px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.filter-form {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-group {
    flex: 1;
    min-width: 160px;
}

.search-group {
    flex: 2;
    display: flex;
    gap: 8px;
}

.search-group .form-control {
    flex: 1;
}

/* 表单 */
.app-form {
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
    margin-bottom: 24px;
}

.form-row-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.required::after {
    content: '*';
    color: var(--danger-color);
    margin-left: 4px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* 高亮复选框样式 */
.highlight-checkbox {
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    transition: all 0.3s ease;
}

.highlight-checkbox:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.highlight-checkbox input[type="checkbox"]:checked ~ span {
    color: var(--primary-color);
    font-weight: 600;
}

.highlight-checkbox span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
}

.highlight-checkbox span i {
    font-size: 18px;
}

.highlight-checkbox small {
    display: block;
    margin-top: 4px;
    margin-left: 28px;
    color: var(--text-muted);
    font-size: 12px;
}

textarea.form-control {
    resize: vertical;
    font-family: inherit;
}

.form-actions {
    display: flex;
    gap: 12px;
    padding: 24px 0;
    border-top: 1px solid var(--border-color);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.3;
}

.empty-state p {
    font-size: 16px;
    margin-bottom: 20px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .stat-card {
        padding: 16px;
    }
    
    .content-wrapper {
        padding: 20px;
    }
    
    .page-header {
        flex-direction: column;
        gap: 16px;
    }
    
    .filter-form {
        flex-direction: column;
    }
    
    .filter-group {
        width: 100%;
    }
    
    .topbar {
        padding: 12px 16px;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: 12px;
    }
    
    .login-form {
        padding: 20px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-card {
        flex-direction: column;
        text-align: center;
    }
}

/* ======================
   图标选择器样式
   ====================== */

.icon-picker-btn {
    margin-top: 10px;
}

/* 模态框 */
.icon-picker-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

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

.icon-picker-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.icon-picker-content {
    position: relative;
    width: 90%;
    max-width: 900px;
    max-height: 85vh;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    animation: slideUp 0.3s ease;
}

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

.icon-picker-header {
    padding: 24px 32px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.icon-picker-header h2 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.icon-picker-header h2 i {
    font-size: 24px;
    color: var(--primary-color);
}

.icon-picker-close {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-secondary);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.icon-picker-close:hover {
    background: #FFEBEE;
    color: var(--danger-color);
}

.icon-picker-search {
    padding: 24px 32px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    margin-bottom: 16px;
}

.search-input-wrapper i {
    position: absolute;
    left: 16px;
    color: var(--text-muted);
    font-size: 16px;
}

.icon-search-input {
    width: 100%;
    padding: 14px 16px 14px 48px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 15px;
    transition: all 0.2s;
}

.icon-search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.search-options {
    display: flex;
    gap: 20px;
}

.search-option {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
    color: var(--text-secondary);
    font-size: 14px;
}

.search-option input[type="radio"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.search-option:has(input:checked) {
    color: var(--primary-color);
    font-weight: 500;
}

.icon-picker-body {
    flex: 1;
    overflow-y: auto;
    padding: 24px 32px;
    min-height: 400px;
}

/* 加载状态 */
.icon-picker-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 400px;
    gap: 20px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.icon-picker-loading p {
    color: var(--text-secondary);
    font-size: 15px;
}

/* 空状态 */
.icon-picker-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 400px;
    gap: 12px;
    color: var(--text-muted);
}

.icon-picker-empty i {
    font-size: 80px;
    opacity: 0.3;
}

.icon-picker-empty p {
    font-size: 16px;
    margin: 0;
}

.icon-picker-empty small {
    font-size: 13px;
}

/* 错误状态 */
.icon-picker-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 400px;
    gap: 16px;
    text-align: center;
}

.icon-picker-error i {
    font-size: 64px;
    color: var(--warning-color);
}

.icon-picker-error .error-message {
    color: var(--text-secondary);
    font-size: 15px;
    max-width: 500px;
}

/* 搜索结果 */
.icon-picker-results {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.results-count {
    color: var(--text-secondary);
    font-size: 14px;
}

.results-count strong {
    color: var(--primary-color);
    font-size: 16px;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

/* 应用项 */
.icon-result-item {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.icon-result-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.icon-result-image {
    width: 80px;
    height: 80px;
    margin: 0 auto;
}

.icon-result-image img {
    width: 100%;
    height: 100%;
    border-radius: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

.icon-result-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.icon-result-meta {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 6px;
    flex-wrap: wrap;
}

.icon-result-developer {
    font-size: 12px;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.icon-result-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--warning-color);
    font-weight: 600;
}

.icon-result-category {
    font-size: 11px;
    color: var(--text-muted);
    background: var(--bg-secondary);
    padding: 4px 8px;
    border-radius: 4px;
    display: inline-block;
}

.icon-result-action {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 28px;
    height: 28px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.icon-result-item:hover .icon-result-action {
    opacity: 1;
}

.icon-result-action i {
    color: var(--success-color);
    font-size: 20px;
}

/* Toast 通知 */
.toast-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    padding: 16px 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 10000;
    transform: translateX(400px);
    transition: transform 0.3s ease;
}

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

.toast-notification.success {
    border-left: 4px solid var(--success-color);
}

.toast-notification i {
    font-size: 20px;
    color: var(--success-color);
}

.toast-notification span {
    color: var(--text-primary);
    font-weight: 500;
}

/* 图标预览优化 */
.icon-preview {
    margin-top: 12px;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    text-align: center;
}

.icon-preview img {
    max-width: 100px;
    max-height: 100px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

/* 响应式 */
@media (max-width: 768px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }
    
    .admin-sidebar.show {
        transform: translateX(0);
    }
    
    .admin-main {
        margin-left: 0;
    }
    
    .topbar {
        padding: 12px 16px;
    }
    
    .admin-header {
        padding: 20px 16px;
    }
    
    .admin-header h1 {
        font-size: 22px;
    }
    
    .card {
        margin: 16px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .icon-picker-content {
        width: 95%;
        max-height: 90vh;
    }
    
    .icon-picker-header,
    .icon-picker-search,
    .icon-picker-body {
        padding: 16px 20px;
    }
    
    .results-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 12px;
    }
    
    .icon-result-item {
        padding: 12px;
    }
    
    .search-options {
        flex-direction: column;
        gap: 12px;
    }
}

@media (max-width: 1024px) {
    .admin-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* 应用名称单元格样式 */
.app-name-cell {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-name-cell img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: cover;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    flex-shrink: 0;
}

.app-name-cell span {
    font-weight: 500;
    color: var(--text-primary);
}

/* 下载链接管理样式 */
.radio-group {
    display: flex;
    gap: 20px;
    margin-top: 8px;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 10px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.2s;
}

.radio-label:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.radio-label input[type="radio"] {
    cursor: pointer;
}

.radio-label input[type="radio"]:checked + span {
    color: var(--primary-color);
    font-weight: 600;
}

.radio-label:has(input[type="radio"]:checked) {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.download-section {
    margin-top: 20px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 8px;
}

/* 网站配置样式 */
.settings-tabs {
    display: flex;
    gap: 8px;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 32px;
    overflow-x: auto;
}

.tab-link {
    padding: 12px 24px;
    border: none;
    background: none;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-link:hover {
    color: var(--primary-color);
    background: var(--bg-secondary);
}

.tab-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background: var(--primary-light);
}

.tab-link i {
    font-size: 16px;
}

.tab-content {
    padding: 20px 0;
}

.settings-form {
    max-width: 800px;
}

.settings-form .form-group {
    margin-bottom: 28px;
}

.settings-form label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
    font-size: 15px;
}

.settings-form label i {
    margin-right: 8px;
    color: var(--primary-color);
}

.settings-form input[type="text"],
.settings-form input[type="email"],
.settings-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: all 0.2s;
}

.settings-form input:focus,
.settings-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.settings-form small {
    display: block;
    margin-top: 6px;
    color: var(--text-secondary);
    font-size: 13px;
}

.settings-form .form-actions {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

/* 服务器信息 */
.server-info h3 {
    font-size: 20px;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.server-info h3 i {
    color: var(--primary-color);
    margin-right: 10px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.info-item {
    background: var(--bg-secondary);
    padding: 16px 20px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

.info-item label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.info-value {
    font-size: 15px;
    color: var(--text-primary);
    font-weight: 600;
    word-break: break-all;
}

/* Logo上传 */
.current-logo,
.current-favicon {
    margin: 12px 0;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    display: inline-block;
}

.current-logo img {
    max-width: 300px;
    max-height: 100px;
    display: block;
}

.current-favicon img {
    width: 64px;
    height: 64px;
    display: block;
}

.settings-form input[type="file"] {
    display: block;
    margin-top: 12px;
    padding: 10px;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    width: 100%;
    cursor: pointer;
    transition: all 0.2s;
}

.settings-form input[type="file"]:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

/* 导航管理 */
.navigation-manager h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.navigation-manager h3 i {
    color: var(--primary-color);
    margin-right: 10px;
}

.navigation-manager .text-muted {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.nav-items-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.nav-item-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.nav-item-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.nav-item-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary-color);
    border-radius: var(--radius-md);
    font-size: 20px;
}

.nav-item-info {
    flex: 1;
}

.nav-item-info strong {
    display: block;
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.nav-item-info small {
    color: var(--text-secondary);
    font-size: 13px;
}

.nav-item-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.badge {
    padding: 4px 12px;
    background: var(--primary-light);
    color: var(--primary-color);
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

/* Alert提示框 */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    margin: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert i {
    font-size: 20px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-success i {
    color: #28a745;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-error i {
    color: #dc3545;
}