/* ===== 基础变量 ===== */
:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --secondary: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #0f172a;
    --gray: #64748b;
    --light: #f1f5f9;
    --border: #e2e8f0;
    --gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #06b6d4 100%);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif; background: #f1f5f9; color: var(--dark); }

/* ===== 侧边栏 ===== */
.sidebar { position: fixed; left: 0; top: 0; bottom: 0; width: 260px; background: var(--dark); color: #fff; z-index: 100; transition: transform 0.3s; }
.sidebar-header { padding: 20px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon { width: 40px; height: 40px; background: var(--gradient); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 14px; }
.logo-icon .accent { color: #fbbf24; }
.logo-text .company { font-size: 16px; font-weight: 700; display: block; }
.logo-text .subtitle { font-size: 11px; color: #94a3b8; }

.sidebar-nav { padding: 16px 0; height: calc(100vh - 80px); overflow-y: auto; }
.nav-section { margin-bottom: 8px; }
.nav-section-title { padding: 8px 20px; font-size: 11px; color: #64748b; text-transform: uppercase; letter-spacing: 1px; }
.nav-item { display: flex; align-items: center; gap: 12px; padding: 12px 20px; color: #94a3b8; font-size: 14px; cursor: pointer; transition: all 0.2s; }
.nav-item:hover { background: rgba(255,255,255,0.05); color: #fff; }
.nav-item.active { background: rgba(79,70,229,0.3); color: #fff; border-left: 3px solid var(--primary); }
.nav-item i { width: 20px; text-align: center; }

/* ===== 主内容区 ===== */
.main-content { margin-left: 260px; min-height: 100vh; transition: margin-left 0.3s; }

/* ===== 顶部导航 ===== */
.top-header { background: #fff; padding: 0 24px; height: 64px; display: flex; align-items: center; justify-content: space-between; box-shadow: 0 1px 3px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 50; }
.header-left { display: flex; align-items: center; gap: 20px; }
.sidebar-toggle { background: none; border: none; font-size: 20px; color: var(--gray); cursor: pointer; padding: 8px; }
.sidebar-toggle:hover { color: var(--primary); }
.breadcrumb { font-size: 14px; color: var(--gray); }
.header-right { display: flex; align-items: center; gap: 20px; }
.header-actions { display: flex; gap: 8px; }
.header-btn { width: 40px; height: 40px; background: var(--light); border: none; border-radius: 10px; font-size: 16px; color: var(--gray); cursor: pointer; position: relative; transition: all 0.2s; }
.header-btn:hover { background: var(--primary); color: #fff; }
.header-btn .badge { position: absolute; top: -4px; right: -4px; width: 18px; height: 18px; background: var(--danger); color: #fff; font-size: 10px; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.user-info { display: flex; align-items: center; gap: 12px; cursor: pointer; padding: 6px 12px; border-radius: 10px; transition: background 0.2s; }
.user-info:hover { background: var(--light); }
.user-avatar { width: 36px; height: 36px; background: var(--gradient); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 600; }
.user-details { display: flex; flex-direction: column; }
.user-name { font-size: 14px; font-weight: 600; }
.user-role { font-size: 11px; color: var(--gray); }
.user-info > i { color: var(--gray); font-size: 12px; }

/* ===== 页面内容 ===== */
.page-content { padding: 24px; }

/* ===== 欢迎横幅 ===== */
.welcome-banner { background: var(--gradient); border-radius: 16px; padding: 32px; color: #fff; display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.welcome-content h2 { font-size: 24px; margin-bottom: 8px; }
.welcome-content p { opacity: 0.9; }
.welcome-actions { display: flex; gap: 12px; }
.welcome-actions .btn { padding: 12px 24px; border-radius: 10px; font-weight: 600; cursor: pointer; transition: all 0.3s; border: none; }
.welcome-actions .btn-primary { background: #fff; color: var(--primary); }
.welcome-actions .btn-secondary { background: rgba(255,255,255,0.2); color: #fff; border: 1px solid rgba(255,255,255,0.3); }

/* ===== 统计卡片 ===== */
.stats-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 24px; }
.stat-card { background: #fff; border-radius: 16px; padding: 24px; display: flex; gap: 16px; align-items: center; box-shadow: 0 1px 3px rgba(0,0,0,0.05); transition: all 0.3s; }
.stat-card:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
.stat-icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 24px; color: #fff; flex-shrink: 0; }
.stat-icon.blue { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.stat-icon.green { background: linear-gradient(135deg, #10b981, #22c55e); }
.stat-icon.orange { background: linear-gradient(135deg, #f59e0b, #f97316); }
.stat-icon.purple { background: linear-gradient(135deg, #8b5cf6, #a855f7); }
.stat-info { flex: 1; }
.stat-info .stat-label { font-size: 13px; color: var(--gray); display: block; margin-bottom: 4px; }
.stat-info .stat-value { font-size: 24px; font-weight: 700; display: block; margin-bottom: 4px; }
.stat-change { font-size: 12px; font-weight: 600; }
.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--danger); }

/* ===== 图表网格 ===== */
.charts-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; margin-bottom: 24px; }
.chart-card { background: #fff; border-radius: 16px; padding: 24px; box-shadow: 0 1px 3px rgba(0,0,0,0.05); }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.card-header h3 { font-size: 16px; font-weight: 600; }
.ai-badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px; background: rgba(79,70,229,0.1); color: var(--primary); font-size: 12px; font-weight: 600; border-radius: 20px; }
.time-filter { display: flex; gap: 4px; }
.time-filter button { padding: 6px 12px; background: var(--light); border: none; border-radius: 6px; font-size: 12px; color: var(--gray); cursor: pointer; transition: all 0.2s; }
.time-filter button.active, .time-filter button:hover { background: var(--primary); color: #fff; }

.chart-body { min-height: 200px; }
.chart-bars { display: flex; align-items: flex-end; justify-content: space-between; height: 180px; padding-top: 20px; }
.bar-item { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 8px; }
.bar { width: 30px; background: linear-gradient(180deg, var(--primary), rgba(79,70,229,0.3)); border-radius: 4px 4px 0 0; transition: all 0.3s; }
.bar:hover { transform: scaleY(1.05); }
.bar.highlight { background: linear-gradient(180deg, var(--secondary), rgba(6,182,212,0.3)); }
.bar-item span { font-size: 12px; color: var(--gray); }

/* AI服务统计 */
.ai-stats { display: flex; flex-direction: column; gap: 16px; }
.ai-stat-item { display: flex; align-items: center; gap: 16px; padding: 16px; background: var(--light); border-radius: 12px; }
.ai-stat-icon { width: 44px; height: 44px; background: var(--gradient); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; }
.ai-stat-info { flex: 1; }
.ai-stat-label { font-size: 13px; color: var(--gray); display: block; margin-bottom: 2px; }
.ai-stat-value { font-size: 18px; font-weight: 700; }

/* ===== 内容网格 ===== */
.content-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 24px; margin-bottom: 24px; }
.panel-card { background: #fff; border-radius: 16px; padding: 24px; box-shadow: 0 1px 3px rgba(0,0,0,0.05); }
.panel-card .card-header { margin-bottom: 20px; }
.panel-card .card-header h3 { font-size: 16px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.panel-card .card-header h3 i { color: var(--primary); }
.more-link { font-size: 13px; color: var(--primary); }
.btn-add { width: 28px; height: 28px; background: var(--light); border: none; border-radius: 6px; color: var(--gray); cursor: pointer; transition: all 0.2s; }
.btn-add:hover { background: var(--primary); color: #fff; }

/* 待办事项 */
.todo-list { display: flex; flex-direction: column; gap: 12px; }
.todo-item { display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--light); border-radius: 10px; }
.todo-item input[type="checkbox"] { width: 18px; height: 18px; cursor: pointer; }
.todo-item label { flex: 1; font-size: 14px; cursor: pointer; }
.todo-item label.completed { text-decoration: line-through; color: var(--gray); }
.priority { padding: 2px 8px; font-size: 11px; border-radius: 4px; background: var(--light); color: var(--gray); }
.priority.high { background: rgba(239,68,68,0.1); color: var(--danger); }

/* 数据表格 */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 12px 8px; text-align: left; border-bottom: 1px solid var(--border); font-size: 13px; }
.data-table th { color: var(--gray); font-weight: 500; }
.status { padding: 4px 10px; border-radius: 20px; font-size: 12px; }
.status.success { background: rgba(16,185,129,0.1); color: var(--success); }
.status.pending { background: rgba(245,158,11,0.1); color: var(--warning); }
.status.shipping { background: rgba(59,130,246,0.1); color: #3b82f6; }

/* ===== 快捷功能 ===== */
.quick-actions { background: #fff; border-radius: 16px; padding: 24px; box-shadow: 0 1px 3px rgba(0,0,0,0.05); }
.quick-actions h3 { font-size: 16px; font-weight: 600; margin-bottom: 20px; display: flex; align-items: center; gap: 8px; }
.quick-actions h3 i { color: var(--primary); }
.quick-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.quick-item { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 20px; background: var(--light); border-radius: 12px; transition: all 0.3s; cursor: pointer; }
.quick-item:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
.quick-item i { font-size: 28px; color: var(--primary); }
.quick-item:hover i { color: #fff; }
.quick-item span { font-size: 13px; }

/* ===== 页面面板 ===== */
.page-panel { display: none; }
.page-panel.active { display: block; animation: fadeIn 0.3s; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.panel-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.panel-header h2 { font-size: 20px; font-weight: 700; display: flex; align-items: center; gap: 12px; }
.panel-header h2 i { color: var(--primary); }
.panel-header .btn { padding: 10px 20px; background: var(--primary); color: #fff; border: none; border-radius: 8px; cursor: pointer; font-weight: 600; display: flex; align-items: center; gap: 8px; }

/* ===== AI客服配置 ===== */
.ai-chatbot-config { display: grid; gap: 24px; }
.config-section { background: #fff; border-radius: 16px; padding: 24px; box-shadow: 0 1px 3px rgba(0,0,0,0.05); }
.config-section h3 { font-size: 16px; font-weight: 600; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.config-form { display: grid; gap: 20px; }
.form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-size: 14px; font-weight: 500; color: var(--dark); }
.form-group input, .form-group select, .form-group textarea { padding: 12px 16px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; transition: border-color 0.2s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); }
.form-group textarea { resize: vertical; min-height: 80px; }

.knowledge-base { display: grid; gap: 12px; margin-bottom: 20px; }
.kb-item { display: flex; align-items: center; gap: 16px; padding: 16px; background: var(--light); border-radius: 12px; }
.kb-item > i { font-size: 24px; color: var(--primary); }
.kb-info { flex: 1; }
.kb-name { font-weight: 600; display: block; margin-bottom: 2px; }
.kb-count { font-size: 12px; color: var(--gray); }
.kb-actions { display: flex; gap: 8px; }
.btn-icon { width: 32px; height: 32px; background: #fff; border: none; border-radius: 8px; color: var(--gray); cursor: pointer; transition: all 0.2s; }
.btn-icon:hover { background: var(--primary); color: #fff; }
.btn.btn-primary { background: var(--primary); color: #fff; border: none; padding: 10px 20px; border-radius: 8px; cursor: pointer; font-weight: 600; display: flex; align-items: center; gap: 8px; }

.ai-stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.ai-stat-card { background: var(--light); padding: 20px; border-radius: 12px; text-align: center; }
.ai-stat-card i { font-size: 28px; color: var(--primary); margin-bottom: 8px; }
.ai-stat-card .stat-num { font-size: 24px; font-weight: 700; display: block; }
.ai-stat-card .stat-label { font-size: 12px; color: var(--gray); }

/* ===== AI分析 ===== */
.analysis-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.analysis-card { background: #fff; border-radius: 16px; padding: 24px; box-shadow: 0 1px 3px rgba(0,0,0,0.05); }
.analysis-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.analysis-card h3 i { color: var(--primary); }
.prediction-result { text-align: center; padding: 20px 0; }
.pred-value { font-size: 32px; font-weight: 800; color: var(--primary); }
.pred-label { font-size: 14px; color: var(--gray); margin-bottom: 8px; }
.pred-change { font-size: 14px; font-weight: 600; color: var(--success); }
.pred-change.up { color: var(--success); }
.analysis-desc { font-size: 13px; color: var(--gray); text-align: center; }

.user-profile { padding: 16px; background: var(--light); border-radius: 12px; }
.profile-tag { display: inline-block; padding: 4px 12px; background: var(--primary); color: #fff; font-size: 12px; border-radius: 20px; margin-bottom: 16px; }
.profile-item { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.profile-item:last-child { border-bottom: none; }
.profile-item span:first-child { color: var(--gray); }

.suggestions { display: flex; flex-direction: column; gap: 12px; }
.suggestion-item { display: flex; align-items: flex-start; gap: 12px; padding: 12px; background: var(--light); border-radius: 10px; font-size: 13px; }
.suggestion-item i { color: var(--primary); margin-top: 2px; }

/* ===== 云主机管理 ===== */
.host-list { display: grid; gap: 16px; }
.host-card { background: #fff; border-radius: 16px; padding: 24px; display: flex; align-items: center; gap: 20px; box-shadow: 0 1px 3px rgba(0,0,0,0.05); }
.host-status { width: 12px; height: 12px; border-radius: 50%; }
.host-status.online { background: var(--success); box-shadow: 0 0 8px rgba(16,185,129,0.5); }
.host-status.offline { background: var(--gray); }
.host-info { flex: 1; }
.host-info h4 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.host-details { display: flex; gap: 20px; margin-bottom: 8px; }
.host-details span { font-size: 13px; color: var(--gray); display: flex; align-items: center; gap: 6px; }
.host-meta { display: flex; gap: 16px; }
.host-ip { font-size: 12px; color: var(--gray); font-family: monospace; }
.host-region { font-size: 12px; color: var(--gray); }
.host-actions { display: flex; gap: 8px; }
.btn-sm { padding: 8px 16px; border-radius: 6px; font-size: 13px; cursor: pointer; font-weight: 500; border: none; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--gray); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-secondary { background: var(--light); color: var(--dark); }
.btn-secondary:hover { background: var(--primary); color: #fff; }

/* ===== 通知面板 ===== */
.notification-panel { position: fixed; top: 0; right: -360px; width: 360px; height: 100vh; background: #fff; box-shadow: -4px 0 20px rgba(0,0,0,0.1); z-index: 200; transition: right 0.3s; }
.notification-panel.active { right: 0; }
.notification-panel .panel-header { padding: 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.notification-panel h3 { font-size: 16px; font-weight: 600; }
.close-panel { background: none; border: none; font-size: 18px; color: var(--gray); cursor: pointer; }
.notification-list { padding: 16px; }
.notification-item { display: flex; gap: 12px; padding: 16px; border-radius: 12px; margin-bottom: 12px; background: var(--light); }
.notification-item.unread { background: rgba(79,70,229,0.05); border-left: 3px solid var(--primary); }
.notification-icon { width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 16px; flex-shrink: 0; }
.notification-icon.warning { background: var(--warning); }
.notification-icon.info { background: var(--primary); }
.notification-icon.success { background: var(--success); }
.notification-content p { font-size: 14px; margin-bottom: 4px; }
.notification-time { font-size: 12px; color: var(--gray); }

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
    .stats-cards { grid-template-columns: repeat(2, 1fr); }
    .charts-grid { grid-template-columns: 1fr; }
    .content-grid { grid-template-columns: 1fr; }
    .quick-grid { grid-template-columns: repeat(3, 1fr); }
    .ai-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .analysis-cards { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.active { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .stats-cards { grid-template-columns: 1fr; }
    .quick-grid { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr; }
    .host-card { flex-direction: column; align-items: flex-start; }
}