/**
 * 管理后台样式
 * 现代化深色主题管理界面
 */

:root {
    --admin-bg: #0f172a;
    --admin-sidebar: #1e293b;
    --admin-card: #1e293b;
    --admin-hover: #334155;
    
    --admin-text: #f8fafc;
    --admin-text-secondary: #94a3b8;
    --admin-text-muted: #64748b;
    
    --admin-border: #334155;
    --admin-accent: #3b82f6;
    --admin-accent-hover: #2563eb;
    
    --admin-success: #10b981;
    --admin-warning: #f59e0b;
    --admin-danger: #ef4444;
    
    --admin-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --admin-radius: 12px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--admin-bg);
    color: var(--admin-text);
    line-height: 1.6;
}

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

/* 侧边栏 */
.sidebar {
    width: 260px;
    background: var(--admin-sidebar);
    border-right: 1px solid var(--admin-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    transition: width 0.3s ease;
    z-index: 100;
}

.sidebar.collapsed {
    width: 80px;
}

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

.sidebar .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--admin-accent);
}

.sidebar .logo i {
    font-size: 1.5rem;
}

.sidebar.collapsed .logo span,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .nav-label,
.sidebar.collapsed .back-to-site span,
.sidebar.collapsed .logout-btn span {
    display: none;
}

.sidebar-toggle {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid var(--admin-border);
    background: transparent;
    color: var(--admin-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.sidebar-toggle:hover {
    background: var(--admin-hover);
    color: var(--admin-text);
}

.sidebar.collapsed .sidebar-toggle {
    margin: 0 auto;
}

/* 导航 */
.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-label {
    display: block;
    padding: 0 12px;
    margin-bottom: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--admin-text-muted);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    color: var(--admin-text-secondary);
    font-weight: 500;
    transition: all 0.2s;
    margin-bottom: 4px;
    cursor: pointer;
}

.nav-item:hover {
    background: var(--admin-hover);
    color: var(--admin-text);
}

.nav-item.active {
    background: var(--admin-accent);
    color: white;
}

.nav-item i {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

/* 侧边栏底部 */
.sidebar-footer {
    padding: 16px 12px;
    border-top: 1px solid var(--admin-border);
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    color: var(--admin-text-secondary);
    font-weight: 500;
    transition: all 0.2s;
    width: 100%;
    background: transparent;
    border: none;
    cursor: pointer;
    margin-bottom: 8px;
}

.logout-btn:hover {
    background: var(--admin-danger);
    color: white;
}

.back-to-site {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    color: var(--admin-text-secondary);
    font-weight: 500;
    transition: all 0.2s;
}

.back-to-site:hover {
    background: var(--admin-hover);
    color: var(--admin-text);
}

/* 主内容区 */
.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left 0.3s ease;
}

.sidebar.collapsed + .main-content {
    margin-left: 80px;
}

/* 顶部栏 */
.top-bar {
    height: 64px;
    background: var(--admin-sidebar);
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.top-bar .search-box {
    position: relative;
    width: 320px;
}

.top-bar .search-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--admin-text-muted);
}

.top-bar .search-box input {
    width: 100%;
    padding: 10px 12px 10px 40px;
    background: var(--admin-bg);
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    color: var(--admin-text);
    font-size: 0.9rem;
}

.top-bar .search-box input:focus {
    outline: none;
    border-color: var(--admin-accent);
}

.top-bar .search-box input::placeholder {
    color: var(--admin-text-muted);
}

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

.action-btn {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--admin-border);
    background: transparent;
    color: var(--admin-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.action-btn:hover {
    background: var(--admin-hover);
    color: var(--admin-text);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.user-menu:hover {
    background: var(--admin-hover);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

.user-name {
    font-weight: 500;
    font-size: 0.9rem;
}

/* 页面内容 */
.page-content {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
}

.page-section {
    display: none;
}

.page-section.active {
    display: block;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.page-header p {
    color: var(--admin-text-secondary);
}

/* 统计卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--admin-card);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    position: relative;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.stat-icon.blue { background: rgba(59, 130, 246, 0.2); color: #3b82f6; }
.stat-icon.green { background: rgba(16, 185, 129, 0.2); color: #10b981; }
.stat-icon.purple { background: rgba(139, 92, 246, 0.2); color: #8b5cf6; }
.stat-icon.orange { background: rgba(245, 158, 11, 0.2); color: #f59e0b; }

.stat-info {
    flex: 1;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--admin-text-secondary);
    margin-top: 4px;
}

/* 快捷操作 */
.quick-actions {
    margin-bottom: 32px;
}

.quick-actions h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.action-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.action-card {
    background: var(--admin-card);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius);
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--admin-text);
    border: none;
}

.action-card:hover {
    background: var(--admin-hover);
    border-color: var(--admin-accent);
    transform: translateY(-2px);
}

.action-card i {
    font-size: 1.5rem;
    color: var(--admin-accent);
}

.action-card span {
    font-weight: 500;
}

/* 筛选栏 */
.filter-bar {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.search-input-wrapper {
    position: relative;
    flex: 1;
}

.search-input-wrapper i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--admin-text-muted);
}

.search-input-wrapper input {
    width: 100%;
    padding: 10px 12px 10px 40px;
    background: var(--admin-bg);
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    color: var(--admin-text);
    font-size: 0.9rem;
}

.search-input-wrapper input:focus {
    outline: none;
    border-color: var(--admin-accent);
}

.filter-bar select {
    padding: 10px 36px 10px 12px;
    background: var(--admin-bg);
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    color: var(--admin-text);
    font-size: 0.9rem;
    cursor: pointer;
    min-width: 150px;
}

.filter-bar select:focus {
    outline: none;
    border-color: var(--admin-accent);
}

/* 最近添加 */
.recent-section {
    background: var(--admin-card);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius);
    padding: 20px;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.section-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.view-all {
    color: var(--admin-accent);
    font-size: 0.875rem;
    font-weight: 500;
}

.view-all:hover {
    text-decoration: underline;
}

/* 数据表格 */
.data-table-wrapper {
    overflow-x: auto;
}

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

.data-table th {
    text-align: left;
    padding: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--admin-text-muted);
    border-bottom: 1px solid var(--admin-border);
}

.data-table td {
    padding: 16px 12px;
    border-bottom: 1px solid var(--admin-border);
}

.data-table tr:last-child td {
    border-bottom: none;
}

.website-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.website-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.website-details {
    display: flex;
    flex-direction: column;
}

.website-name {
    font-weight: 600;
}

.website-desc {
    font-size: 0.875rem;
    color: var(--admin-text-muted);
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.website-link {
    color: var(--admin-accent);
    font-size: 0.875rem;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: inline-block;
}

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

.badge-tag {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
}

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

.icon-btn {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid var(--admin-border);
    background: transparent;
    color: var(--admin-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: var(--admin-hover);
    color: var(--admin-text);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 48px;
    color: var(--admin-text-muted);
}

.empty-state i {
    font-size: 2rem;
    margin-bottom: 12px;
}

.loading-state {
    text-align: center;
    padding: 48px;
    color: var(--admin-text-muted);
}

.loading-state i {
    font-size: 2rem;
    margin-bottom: 12px;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

/* 分类网格 */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.category-card {
    background: var(--admin-card);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius);
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-left: 4px solid;
    transition: all 0.2s;
}

.category-card:hover {
    background: var(--admin-hover);
    transform: translateY(-2px);
}

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

.category-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.category-info h4 {
    font-weight: 600;
    margin-bottom: 4px;
}

.category-info span {
    font-size: 0.875rem;
    color: var(--admin-text-muted);
}

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

/* 设置表单 */
.settings-form {
    max-width: 600px;
}

.form-section {
    background: var(--admin-card);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius);
    padding: 24px;
    margin-bottom: 24px;
}

.form-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--admin-border);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.875rem;
    font-weight: 500;
}

.form-group .required {
    color: var(--admin-danger);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    background: var(--admin-bg);
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    color: var(--admin-text);
    font-size: 0.9rem;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--admin-accent);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-hint {
    display: block;
    margin-top: 6px;
    font-size: 0.8rem;
    color: var(--admin-text-muted);
}

.password-input-wrapper {
    position: relative;
}

.password-input-wrapper input {
    padding-right: 44px;
}

.toggle-password {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--admin-text-muted);
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.2s;
}

.toggle-password:hover {
    background: var(--admin-hover);
    color: var(--admin-text);
}

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

/* 图标选择器 */
.icon-selector {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.icon-option {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    border: 2px solid var(--admin-border);
    background: var(--admin-bg);
    color: var(--admin-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.icon-option:hover {
    border-color: var(--admin-accent);
    color: var(--admin-accent);
}

.icon-option.active {
    border-color: var(--admin-accent);
    background: rgba(59, 130, 246, 0.2);
    color: var(--admin-accent);
}

/* 颜色选择器 */
.color-selector {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.color-option {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 3px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
}

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

.color-option.active {
    border-color: var(--admin-text);
    box-shadow: 0 0 0 2px var(--admin-bg), 0 0 0 4px var(--admin-accent);
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
}

.modal-content {
    position: relative;
    background: var(--admin-card);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    z-index: 1;
}

.modal-content.modal-small {
    max-width: 400px;
}

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

.modal-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--admin-text-muted);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: var(--admin-hover);
    color: var(--admin-text);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--admin-border);
}

/* 删除确认 */
.delete-confirm {
    text-align: center;
    padding: 20px;
}

.delete-confirm i {
    font-size: 3rem;
    color: var(--admin-warning);
    margin-bottom: 16px;
}

.delete-confirm p {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.delete-warning {
    color: var(--admin-text-muted);
    font-size: 0.875rem;
}

/* 按钮 */
.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--admin-accent-hover);
}

.btn-secondary {
    background: var(--admin-hover);
    color: var(--admin-text);
    border: 1px solid var(--admin-border);
}

.btn-secondary:hover {
    background: var(--admin-border);
}

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

.btn-danger:hover {
    background: #dc2626;
}

/* Toast 提示 */
.toast {
    position: fixed;
    top: 24px;
    right: 24px;
    padding: 16px 24px;
    background: var(--admin-card);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius);
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    opacity: 0;
    transform: translateX(100px);
    transition: all 0.3s;
    z-index: 1001;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast.success {
    border-color: var(--admin-success);
    color: var(--admin-success);
}

.toast.error {
    border-color: var(--admin-danger);
    color: var(--admin-danger);
}

.toast.warning {
    border-color: var(--admin-warning);
    color: var(--admin-warning);
}

.toast i {
    font-size: 1.25rem;
}

/* 响应式 */
@media (max-width: 1280px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .action-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .top-bar .search-box {
        width: 200px;
    }
    
    .user-name {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        grid-template-columns: 1fr;
    }
    
    .filter-bar {
        flex-direction: column;
    }
    
    .data-table {
        font-size: 0.875rem;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
}

/* 滚动条 */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--admin-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--admin-border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--admin-text-muted);
}

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

.fa-spin {
    animation: spin 1s linear infinite;
}

/* 选中文字样式 */
::selection {
    background: var(--admin-accent);
    color: white;
}