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

/* ── 登录界面 ── */
.admin-login {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--color-bg-primary);
}

.login-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xxl);
    text-align: center;
    max-width: 400px;
    width: 90%;
    backdrop-filter: blur(12px);
}

.login-logo {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.login-card h1 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.login-subtitle {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xl);
}

.login-form input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--color-bg-input);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-md);
    outline: none;
    transition: border-color var(--transition-fast);
}

.login-form input:focus {
    border-color: var(--color-primary);
}

.login-error {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-sm);
}

.login-hint {
    color: var(--color-text-disabled);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-lg);
}

/* ── 管理面板布局 ── */
.admin-panel {
    display: flex;
    min-height: 100vh;
}

/* ── 侧边栏 ── */
.admin-sidebar {
    width: 240px;
    background: rgba(10, 16, 20, 0.95);
    border-right: 1px solid var(--color-border-light);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    overflow-y: auto;
}

.sidebar-brand {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.sidebar-badge {
    background: var(--color-primary);
    color: white;
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-medium);
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md) 0;
}

.sidebar-link {
    display: block;
    padding: 0.6rem var(--spacing-lg);
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.sidebar-link:hover,
.sidebar-link.active {
    color: var(--color-text-primary);
    background: rgba(45, 126, 231, 0.1);
    border-left-color: var(--color-primary);
}

.sidebar-footer {
    border-top: 1px solid var(--color-border-light);
    padding: var(--spacing-md) 0;
}

/* ── 主内容区 ── */
.admin-main {
    flex: 1;
    margin-left: 240px;
    padding: var(--spacing-xl);
    min-height: 100vh;
    background: var(--color-bg-primary);
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
}

.admin-header h2 {
    color: var(--color-text-primary);
    font-size: var(--font-size-xl);
}

.header-actions {
    display: flex;
    gap: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ── Tab 内容 ── */
.tab-content {
    display: none;
}

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

/* ── 统计卡片网格 ── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-normal);
}

.stat-card:hover {
    border-color: var(--color-border-medium);
    transform: translateY(-2px);
}

.stat-icon {
    font-size: 1.8rem;
}

.stat-number {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ── 管理卡片 ── */
.admin-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.admin-card h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-md);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-md);
}

.card-header h3 {
    margin-bottom: 0;
}

.danger-zone {
    border-color: rgba(239, 68, 68, 0.3);
}

.danger-zone h3 {
    color: var(--color-error);
}

/* ── 表单组件 ── */
.form-input,
.form-textarea {
    width: 100%;
    padding: 0.6rem 1rem;
    background: var(--color-bg-input);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    font-family: var(--font-family-primary);
    outline: none;
    transition: border-color var(--transition-fast);
    margin-bottom: var(--spacing-sm);
}

.form-input:focus,
.form-textarea:focus {
    border-color: var(--color-primary);
}

.form-input-sm {
    max-width: 250px;
    padding: 0.4rem 0.8rem;
}

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

.form-row {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.form-row .form-input {
    flex: 1;
    margin-bottom: 0;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.note-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.settings-form {
    max-width: 500px;
}

.form-msg {
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-sm);
}

.form-msg.error { color: var(--color-error); }
.form-msg.success { color: var(--color-success); }

/* ── 按钮 ── */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    border: none;
    font-size: var(--font-size-sm);
    transition: all var(--transition-normal);
}

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

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(45, 126, 231, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-light);
}

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

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

.btn-block {
    width: 100%;
}

.btn-group {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    padding: 4px 8px;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.btn-icon:hover {
    background: rgba(45, 126, 231, 0.1);
}

.btn-danger-icon:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* ── 列表项 ── */
.note-item,
.bookmark-item,
.ann-item,
.fb-item {
    padding: var(--spacing-md);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-sm);
    transition: border-color var(--transition-fast);
}

.note-item:hover,
.bookmark-item:hover,
.ann-item:hover,
.fb-item:hover {
    border-color: var(--color-border-medium);
}

.note-item.pinned {
    border-color: rgba(245, 158, 11, 0.4);
    background: rgba(245, 158, 11, 0.05);
}

.note-header,
.ann-header,
.fb-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.note-header h4,
.ann-header h4 {
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
}

.note-actions,
.ann-actions,
.fb-actions {
    display: flex;
    gap: var(--spacing-xs);
}

.note-content {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    margin-bottom: var(--spacing-sm);
}

.note-meta {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
}

.tag-sm {
    background: rgba(45, 126, 231, 0.1);
    color: var(--color-secondary);
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 11px;
}

.note-time,
.ann-time,
.fb-time {
    color: var(--color-text-disabled);
    font-size: var(--font-size-xs);
}

/* ── 公告类型 ── */
.ann-info { border-left: 3px solid var(--color-info); }
.ann-update { border-left: 3px solid var(--color-primary); }
.ann-warning { border-left: 3px solid var(--color-warning); }
.ann-success { border-left: 3px solid var(--color-success); }
.ann-item.inactive { opacity: 0.5; }

/* ── 反馈 ── */
.fb-item.unread {
    border-left: 3px solid var(--color-primary);
    background: rgba(45, 126, 231, 0.03);
}

.fb-email {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

.badge {
    background: var(--color-primary);
    color: white;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
}

/* ── 柱状图 ── */
.bar-chart {
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-sm);
    height: 150px;
    padding: var(--spacing-md) 0;
}

.bar-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
    justify-content: flex-end;
}

.bar {
    width: 100%;
    max-width: 40px;
    background: var(--gradient-primary);
    border-radius: 4px 4px 0 0;
    min-height: 4px;
    position: relative;
    transition: height 0.5s ease;
}

.bar-value {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 11px;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.bar-label {
    font-size: 11px;
    color: var(--color-text-disabled);
    margin-top: 4px;
}

/* ── 热门页面 ── */
.top-page-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.top-page-item:last-child { border-bottom: none; }

.rank {
    width: 24px;
    height: 24px;
    background: var(--color-bg-input);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.page-name { flex: 1; color: var(--color-text-tertiary); font-size: var(--font-size-sm); word-break: break-all; }
.page-count { color: var(--color-text-muted); font-size: var(--font-size-sm); white-space: nowrap; }

/* ── 日志 ── */
.log-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-xs) 0;
    font-size: var(--font-size-sm);
    border-bottom: 1px solid rgba(255,255,255,0.03);
}

.log-time {
    color: var(--color-text-disabled);
    font-size: var(--font-size-xs);
    white-space: nowrap;
    min-width: 120px;
}

.log-msg { color: var(--color-text-tertiary); }

/* ── 表格 ── */
.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
    text-align: left;
    font-size: var(--font-size-sm);
}

.admin-table th {
    color: var(--color-text-muted);
    font-weight: var(--font-weight-medium);
}

.admin-table td {
    color: var(--color-text-tertiary);
}

/* ── 页面统计条 ── */
.page-stat-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.page-stat-row .page-name {
    min-width: 200px;
    max-width: 300px;
}

.bar-bg {
    flex: 1;
    height: 8px;
    background: rgba(45, 126, 231, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 4px;
    transition: width 0.5s ease;
}

/* ── 数据预览 ── */
.data-preview {
    margin-top: var(--spacing-md);
    max-height: 300px;
    overflow: auto;
}

.data-preview pre {
    background: var(--color-bg-input);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    font-family: var(--font-family-mono);
    white-space: pre-wrap;
    word-break: break-all;
}

/* ── 存储信息 ── */
.storage-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border-light);
    font-size: var(--font-size-sm);
}

.storage-row span { color: var(--color-text-tertiary); }
.storage-row strong { color: var(--color-primary); }

/* ── Toast 通知 ── */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    z-index: 9999;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    pointer-events: none;
}

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

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

.toast.warning {
    background: var(--color-warning);
    color: white;
}

.toast.error {
    background: var(--color-error);
    color: white;
}

/* ── 响应式 ── */
@media (max-width: 768px) {
    .admin-sidebar {
        width: 200px;
    }

    .admin-main {
        margin-left: 200px;
        padding: var(--spacing-md);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .form-row {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .admin-sidebar {
        display: none;
    }

    .admin-main {
        margin-left: 0;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   新增模块样式 — 任务/评论/搜索分析/仪表盘增强
   ============================================ */

/* ── 仪表盘增强：三列小部件网格 ── */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.mini-list {
    max-height: 220px;
    overflow-y: auto;
}

.mini-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.mini-item:last-child { border-bottom: none; }

.mini-item.overdue {
    background: rgba(239, 68, 68, 0.1);
    border-left: 3px solid var(--color-danger, #ef4444);
    border-radius: 4px;
    padding-left: var(--spacing-sm);
}

.mini-item .mini-date {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs, 0.7rem);
    white-space: nowrap;
    margin-left: var(--spacing-sm);
}

/* ── 搜索热词标签 ── */
.hot-word-tag {
    display: inline-block;
    background: rgba(45, 126, 231, 0.15);
    border: 1px solid rgba(45, 126, 231, 0.3);
    border-radius: 16px;
    padding: 4px 12px;
    margin: 4px;
    font-size: var(--font-size-sm);
    color: var(--color-primary);
}

.hot-word-tag small {
    color: var(--color-text-muted);
    font-size: 0.75em;
}

/* ── 任务管理样式 ── */
.todos-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.todo-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--spacing-md);
    background: var(--color-bg-input);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-text-muted);
    transition: all 0.2s;
}

.todo-item:hover {
    border-color: rgba(45, 126, 231, 0.4);
    background: rgba(45, 126, 231, 0.05);
}

.todo-item.priority-high { border-left-color: #ef4444; }
.todo-item.priority-medium { border-left-color: #f59e0b; }
.todo-item.priority-low { border-left-color: #22c55e; }

.todo-item.status-done {
    opacity: 0.6;
    border-left-color: #6b7280;
}

.todo-item.overdue {
    background: rgba(239, 68, 68, 0.08);
    border-color: rgba(239, 68, 68, 0.3);
}

.todo-left {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    flex: 1;
    min-width: 0;
}

.todo-priority {
    font-size: 1rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.todo-info h4 {
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    margin-bottom: 4px;
    word-break: break-word;
}

.todo-desc {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
    margin-bottom: 6px;
    line-height: 1.4;
}

.todo-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--color-text-muted);
    flex-wrap: wrap;
}

.overdue-badge {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
}

.todo-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
    margin-left: var(--spacing-sm);
}

/* ── 评论管理样式 ── */
.comments-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.comment-item {
    padding: var(--spacing-md);
    background: var(--color-bg-input);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-text-muted);
}

.comment-item.pending {
    border-left-color: #f59e0b;
    background: rgba(245, 158, 11, 0.05);
}

.comment-item.approved {
    border-left-color: #22c55e;
}

.comment-item.pinned {
    border-left-color: var(--color-primary);
    background: rgba(45, 126, 231, 0.05);
}

.comment-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xs);
}

.comment-header strong {
    color: var(--color-primary);
}

.comment-page {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs, 0.75rem);
    background: rgba(255,255,255,0.05);
    padding: 2px 6px;
    border-radius: 4px;
}

.comment-time {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs, 0.75rem);
    margin-left: auto;
}

.pinned-badge {
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--color-primary);
}

.comment-content {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
}

.comment-actions {
    display: flex;
    gap: var(--spacing-xs);
}

/* ── 搜索分析样式 ── */
.stats-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.hot-words-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
}

.hot-word-cloud {
    display: inline-block;
    background: linear-gradient(135deg, rgba(45, 126, 231, 0.15), rgba(79, 209, 197, 0.15));
    border: 1px solid rgba(45, 126, 231, 0.3);
    border-radius: 20px;
    padding: 6px 14px;
    color: var(--color-primary);
    transition: all 0.2s;
}

.hot-word-cloud:hover {
    background: linear-gradient(135deg, rgba(45, 126, 231, 0.25), rgba(79, 209, 197, 0.25));
    transform: scale(1.05);
}

.hot-word-cloud small {
    color: var(--color-text-muted);
    font-size: 0.7em;
}

.no-results-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.no-result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.no-result-word {
    color: var(--color-text-secondary);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
}

.no-result-count {
    color: var(--color-danger, #ef4444);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.recent-searches-list {
    overflow-x: auto;
}

/* ── 筛选栏 ── */
.filter-bar {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.filter-chip {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--color-border-light);
    border-radius: 16px;
    padding: 4px 12px;
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    cursor: pointer;
    transition: all 0.2s;
}

.filter-chip:hover {
    background: rgba(45, 126, 231, 0.1);
    border-color: rgba(45, 126, 231, 0.3);
    color: var(--color-primary);
}

.filter-chip.active {
    background: rgba(45, 126, 231, 0.2);
    border-color: var(--color-primary);
    color: var(--color-primary);
    font-weight: 600;
}

.badge-sm {
    background: var(--color-danger, #ef4444);
    color: white;
    font-size: 0.65rem;
    padding: 1px 5px;
    border-radius: 8px;
    margin-left: 4px;
}

/* ── 响应式调整 ── */
@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid-3 {
        grid-template-columns: 1fr;
    }

    .todo-item {
        flex-direction: column;
    }

    .todo-actions {
        margin-left: 0;
        margin-top: var(--spacing-sm);
    }

    .comment-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .comment-time {
        margin-left: 0;
    }
}