/* 杆杆响智慧助手 — 数据仪表板样式 */
/* 与 admin.css 保持统一的深色主题设计风格 */

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

:root {
  /* 继承深色主题配色 */
  --bg: #1a1a2e;
  --bg-surface: #16213e;
  --bg-card: #0f3460;
  --text: #e6e6e6;
  --text-muted: #a0a0b0;
  --accent: #e94560;
  --accent-light: #ff6b81;
  --border: #2a2a4a;
  
  /* 状态指示灯颜色 */
  --status-ok: #10b981;
  --status-warning: #f59e0b;
  --status-error: #ef4444;
}

html, body { 
  height: 100%; 
  font-family: -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; 
  background: var(--bg); 
  color: var(--text); 
  overflow-x: hidden;
}

/* ===== Header / Navigation ===== */
#header {
  display: flex; 
  align-items: center; 
  justify-content: space-between;
  height: 52px; 
  padding: 0 16px;
  background: var(--bg-surface); 
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

#header h1 { 
  font-size: 16px; 
  font-weight: 600; 
  white-space: nowrap; 
}

.header-left { display: flex; align-items: center; gap: 12px; }
.header-nav { display: flex; gap: 4px; }
.header-right { display: flex; align-items: center; gap: 12px; }

.nav-link {
  padding: 8px 16px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  border-radius: 6px;
  transition: all 0.2s;
}
.nav-link:hover { color: var(--text); background: var(--bg-card); }
.nav-link.active { 
  color: var(--accent); 
  background: rgba(233, 69, 96, 0.15); 
  font-weight: 500;
}

/* ===== Buttons ===== */
.btn-icon { 
  background: var(--bg-card); 
  color: var(--text); 
  font-size: 16px; 
  width: 36px; 
  height: 36px; 
  padding: 0; 
  display: flex; 
  align-items: center; 
  justify-content: center;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-icon:hover { background: var(--border); }

/* ===== Tab 栏 ===== */
.tab-bar {
  display: flex;
  gap: 0;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 0 16px;
}

.tab-btn {
  padding: 12px 24px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.tab-btn:hover {
  color: var(--text);
}

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 500;
}

/* ===== 内容区 ===== */
.tab-content {
  display: none;
}

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

.dashboard-main {
  padding-bottom: 40px;
  overflow-y: auto;
  height: calc(100vh - 52px - 46px);
}

/* ===== KPI 卡片 ===== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 20px;
}

/* 8列KPI网格（P1 新增） */
.kpi-grid-8 {
  grid-template-columns: repeat(8, 1fr);
}

.kpi-grid-8 .kpi-card {
  padding: 16px;
}

.kpi-grid-8 .kpi-value {
  font-size: 28px;
}

.kpi-card {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  border: 1px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.kpi-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
}

.kpi-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ===== 图表网格 ===== */
.chart-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding: 0 20px 16px;
}

.chart-grid-1 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: 0 20px 16px;
}

/* 两列图表网格（别名） */
.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding: 0 20px 16px;
}

/* 全宽图表网格 */
.chart-grid-full {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: 0 20px 20px;
}

.chart-card {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 20px;
  border: 1px solid var(--border);
}

.chart-card h3 {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-weight: 500;
}

.chart-container {
  width: 100%;
  height: 320px;
}

/* ===== Scrollbar ===== */
.dashboard-main::-webkit-scrollbar {
  width: 8px;
}

.dashboard-main::-webkit-scrollbar-track {
  background: transparent;
}

.dashboard-main::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

.dashboard-main::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ===== 响应式布局 ===== */
@media (max-width: 1200px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .kpi-grid-8 {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 768px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .kpi-grid-8 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .kpi-grid-8 .kpi-value {
    font-size: 22px;
  }
  
  .chart-grid-2,
  .chart-grid {
    grid-template-columns: 1fr;
  }
  
  .chart-grid-full {
    padding: 0 12px 12px;
  }
  
  .header-nav {
    display: none;
  }
  
  #header h1 {
    font-size: 14px;
  }
  
  .tab-btn {
    padding: 10px 16px;
    font-size: 13px;
  }
  
  .kpi-value {
    font-size: 28px;
  }
  
  .chart-container {
    height: 280px;
  }
  
  .churn-table {
    font-size: 12px;
  }
  
  .churn-table thead th,
  .churn-table tbody td {
    padding: 8px 10px;
  }
}

@media (max-width: 480px) {
  .kpi-grid {
    grid-template-columns: 1fr;
    padding: 12px;
  }
  
  .chart-grid-2,
  .chart-grid-1,
  .chart-grid,
  .chart-grid-full {
    padding: 0 12px 12px;
  }
  
  .kpi-card {
    padding: 16px;
  }
  
  .kpi-value {
    font-size: 24px;
  }
  
  .chart-card {
    padding: 16px;
  }
  
  .chart-container {
    height: 240px;
  }
  
  .tab-bar {
    padding: 0 8px;
    overflow-x: auto;
  }
  
  .tab-btn {
    padding: 10px 12px;
    font-size: 12px;
    white-space: nowrap;
  }
  
  .table-container {
    max-height: 300px;
  }
}

/* ===== Loading 状态 ===== */
.chart-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  font-size: 14px;
}

.chart-loading::before {
  content: '';
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-right: 8px;
}

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

/* ===== 空状态 ===== */
.chart-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  font-size: 14px;
}

/* ===== 流失用户表格 ===== */
.churn-table {
  width: 100%;
  border-collapse: collapse;
  color: #e0e0e0;
  font-size: 14px;
}

.churn-table thead th {
  background: rgba(15, 52, 96, 0.6);
  padding: 12px 16px;
  text-align: left;
  border-bottom: 2px solid var(--accent);
  white-space: nowrap;
}

.churn-table tbody td {
  padding: 10px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.churn-table tbody tr:hover {
  background: rgba(233, 69, 96, 0.1);
}

.risk-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  text-transform: uppercase;
}

/* ===== 表格容器 ===== */
.table-container {
  max-height: 500px;
  overflow-y: auto;
}

.table-container::-webkit-scrollbar {
  width: 6px;
}

.table-container::-webkit-scrollbar-thumb {
  background: rgba(233, 69, 96, 0.3);
  border-radius: 3px;
}

.table-container::-webkit-scrollbar-thumb:hover {
  background: rgba(233, 69, 96, 0.5);
}