/* ============================================
   千牛洞察管理后台 - 设计系统 v2.0
   设计师: AI UI Designer
   ============================================ */

/* ---------- Design Tokens ---------- */
:root {
  /* 主色系 - 靛蓝 */
  --primary: #4f46e5;
  --primary-light: #6366f1;
  --primary-lighter: #818cf8;
  --primary-dark: #4338ca;
  --primary-darker: #312e81;
  --accent: #7c3aed;
  --accent-light: #a78bfa;

  /* 语义色 */
  --success: #10b981;
  --success-light: #d1fae5;
  --success-dark: #065f46;
  --danger: #ef4444;
  --danger-light: #fee2e2;
  --danger-dark: #991b1b;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --warning-dark: #92400e;
  --info: #3b82f6;
  --info-light: #dbeafe;

  /* 中性色阶 */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;

  /* 背景色 */
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --bg-sidebar: #0f172a;

  /* 文字色 */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;
  --text-muted: #94a3b8;
  --text-inverse: #ffffff;

  /* 边框 */
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --border-dark: #cbd5e1;

  /* 阴影 */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --shadow-2xl: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
  --shadow-primary: 0 4px 14px rgba(79, 70, 229, 0.25);

  /* 圆角 */
  --radius-sm: 6px;
  --radius: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;

  /* 间距 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'SF Mono', 'Monaco', 'Consolas', 'Liberation Mono', monospace;

  /* 字号 */
  --text-xs: 11px;
  --text-sm: 13px;
  --text-base: 14px;
  --text-md: 15px;
  --text-lg: 16px;
  --text-xl: 18px;
  --text-2xl: 20px;
  --text-3xl: 24px;
  --text-4xl: 32px;

  /* 过渡 */
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* 布局 */
  --sidebar-width: 260px;
  --topbar-height: 64px;
}

/* ---------- Reset ---------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  background: var(--bg-body);
  color: var(--text-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

svg { display: inline-block; vertical-align: middle; }
svg.icon { width: 20px; height: 20px; flex-shrink: 0; }
svg.btn-icon-sm { width: 16px; height: 16px; flex-shrink: 0; }
svg.nav-icon { width: 20px; height: 20px; flex-shrink: 0; }
svg.input-icon { width: 18px; height: 18px; color: var(--gray-400); flex-shrink: 0; }
svg.search-icon { width: 18px; height: 18px; color: var(--gray-400); flex-shrink: 0; position: absolute; left: 14px; top: 50%; transform: translateY(-50%); }
svg.breadcrumb-sep { width: 14px; height: 14px; color: var(--gray-300); }

.hidden { display: none !important; }
.mobile-only { display: none !important; }

/* ---------- 防闪屏 ---------- */
html.pre-auth #login-page,
html.pre-auth #main-page { display: none !important; }
html.pre-auth #loader-overlay { display: flex !important; }

/* ============ 通用按钮 ============ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--primary);
  color: var(--text-inverse);
  border: none;
  border-radius: var(--radius);
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.35);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 16px;
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: var(--text-base);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
  color: var(--text-primary);
}

.btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--danger);
  color: var(--text-inverse);
  border: none;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.btn-danger:hover { background: #dc2626; transform: translateY(-1px); }

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: transparent;
  color: var(--text-tertiary);
  border: none;
  font-size: var(--text-base);
  cursor: pointer;
  transition: var(--transition);
  border-radius: var(--radius-sm);
  font-weight: 500;
}
.btn-text:hover { background: var(--gray-100); color: var(--text-primary); }

.btn-block { width: 100%; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}
.icon-btn:hover { background: var(--gray-50); border-color: var(--gray-300); color: var(--text-primary); }

/* ============ 表单 ============ */
.form-group { margin-bottom: var(--space-5); }
.form-group label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 600;
}
.form-group input,
.form-group select {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-size: var(--text-base);
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-card);
  transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}
.form-group input::placeholder { color: var(--gray-400); }

.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.input-wrap .input-icon {
  position: absolute;
  left: 14px;
}
.input-wrap input {
  padding-left: 44px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

/* ============ 登录页 ============ */
.login-page {
  display: flex;
  min-height: 100vh;
}

.login-left {
  flex: 1;
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-12);
  position: relative;
  overflow: hidden;
}
.login-left::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
  top: -150px;
  right: -150px;
  border-radius: 50%;
}
.login-left::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.1) 0%, transparent 70%);
  bottom: -100px;
  left: -100px;
  border-radius: 50%;
}

.login-brand {
  position: relative;
  z-index: 1;
  margin-bottom: var(--space-12);
}
.login-brand-logo {
  margin-bottom: var(--space-5);
}
.login-brand-title {
  font-size: 36px;
  font-weight: 800;
  color: white;
  letter-spacing: -1px;
  margin-bottom: var(--space-2);
}
.login-brand-subtitle {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.6);
  font-weight: 400;
}

.login-features {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.login-feature {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}
.login-feature .icon {
  width: 40px;
  height: 40px;
  color: var(--primary-lighter);
  flex-shrink: 0;
}
.login-feature h4 {
  color: white;
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-1);
}
.login-feature p {
  color: rgba(255,255,255,0.5);
  font-size: var(--text-sm);
}

.login-footer {
  position: relative;
  z-index: 1;
  margin-top: var(--space-12);
  color: rgba(255,255,255,0.3);
  font-size: var(--text-sm);
}

.login-right {
  width: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  padding: var(--space-8);
}

.login-card {
  width: 100%;
  max-width: 360px;
}
.login-card-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}
.login-card-subtitle {
  color: var(--text-tertiary);
  font-size: var(--text-base);
  margin-bottom: var(--space-8);
}

.error-text {
  color: var(--danger);
  font-size: var(--text-sm);
  margin-top: var(--space-3);
  text-align: center;
}

/* ============ 主布局 ============ */
.main-page { display: flex; min-height: 100vh; }

/* ---------- 侧边栏 ---------- */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  color: white;
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  left: 0;
  top: 0;
  z-index: 50;
}

.sidebar-header {
  padding: var(--space-5) var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.sidebar-brand {
  display: flex;
  flex-direction: column;
}
.sidebar-brand-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: white;
  letter-spacing: 0.3px;
}
.sidebar-brand-sub {
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-4) var(--space-3);
  overflow-y: auto;
}
.sidebar-nav-label {
  font-size: 10px;
  color: rgba(255,255,255,0.3);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  padding: 0 var(--space-3);
  margin-bottom: var(--space-2);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 11px var(--space-3);
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  border-radius: var(--radius);
  transition: var(--transition);
  margin-bottom: 2px;
  font-size: var(--text-base);
  font-weight: 500;
  cursor: pointer;
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
}
.nav-item:hover {
  background: rgba(255,255,255,0.06);
  color: white;
}
.nav-item.active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.3) 0%, rgba(124, 58, 237, 0.2) 100%);
  color: white;
  box-shadow: inset 3px 0 0 var(--primary-lighter);
}
.nav-icon { color: currentColor; }

.sidebar-footer {
  padding: var(--space-3);
  border-top: 1px solid rgba(255,255,255,0.06);
}
.sidebar-footer .nav-item { color: rgba(255,255,255,0.5); }
.sidebar-footer .nav-item:hover { color: white; }

/* ---------- 主内容 ---------- */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  height: var(--topbar-height);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-8);
  position: sticky;
  top: 0;
  z-index: 30;
}
.topbar-left { display: flex; align-items: center; gap: var(--space-4); }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.breadcrumb-item {
  font-size: var(--text-base);
  color: var(--text-tertiary);
}
.breadcrumb-item.active {
  color: var(--text-primary);
  font-weight: 600;
}

.topbar-right { display: flex; align-items: center; gap: var(--space-4); }
.topbar-time {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-tertiary);
  font-size: var(--text-sm);
  font-family: var(--font-mono);
}

.content-area {
  padding: var(--space-8);
  flex: 1;
}

.content-page { animation: fadeIn 0.3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- 欢迎栏 ---------- */
.welcome-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  gap: var(--space-4);
}
.welcome-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  margin-bottom: var(--space-1);
}
.welcome-subtitle {
  color: var(--text-tertiary);
  font-size: var(--text-base);
}
.welcome-actions { display: flex; gap: var(--space-3); }

/* ---------- KPI卡片 ---------- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

.kpi-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.kpi-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--gray-200);
}
.kpi-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-4);
}
.kpi-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}
.kpi-icon .icon { width: 22px; height: 22px; }
.kpi-icon-indigo { background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%); box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3); }
.kpi-icon-green { background: linear-gradient(135deg, #34d399 0%, #10b981 100%); box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3); }
.kpi-icon-blue { background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%); box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3); }
.kpi-icon-red { background: linear-gradient(135deg, #f87171 0%, #ef4444 100%); box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3); }

.kpi-trend {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-full);
}
.kpi-trend .icon { width: 14px; height: 14px; }
.kpi-trend-up { background: var(--success-light); color: var(--success-dark); }
.kpi-trend-down { background: var(--danger-light); color: var(--danger-dark); }

.kpi-value {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: var(--space-1);
}
.kpi-label {
  color: var(--text-tertiary);
  font-size: var(--text-sm);
  font-weight: 500;
}

.kpi-sparkline {
  margin-top: var(--space-3);
  height: 32px;
}

/* ---------- 图表卡片 ---------- */
.chart-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}

.chart-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.chart-header {
  padding: var(--space-5) var(--space-5) var(--space-3);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.chart-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}
.chart-subtitle {
  color: var(--text-tertiary);
  font-size: var(--text-sm);
}
.chart-body {
  padding: var(--space-3) var(--space-5) var(--space-5);
  min-height: 200px;
}

/* ---------- 时间线 ---------- */
.timeline {
  padding: var(--space-3) var(--space-5);
}
.timeline-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  position: relative;
}
.timeline-item:not(:last-child)::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 40px;
  bottom: -12px;
  width: 2px;
  background: var(--border);
}
.timeline-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  z-index: 1;
}
.timeline-icon .icon { width: 16px; height: 16px; }
.timeline-icon-green { background: var(--success-light); color: var(--success-dark); }
.timeline-icon-blue { background: var(--info-light); color: var(--info); }
.timeline-icon-red { background: var(--danger-light); color: var(--danger-dark); }
.timeline-icon-gray { background: var(--gray-100); color: var(--gray-500); }

.timeline-content { flex: 1; }
.timeline-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}
.timeline-desc {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}
.timeline-time {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ---------- 迷你统计 ---------- */
.mini-stats {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}
.mini-stat {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 120px;
}
.mini-stat-label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.mini-stat-value {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
}
.mini-stat-green { color: var(--success); }
.mini-stat-gray { color: var(--gray-500); }
.mini-stat-red { color: var(--danger); }

/* ---------- 工具栏 ---------- */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
  gap: var(--space-4);
  flex-wrap: wrap;
}
.toolbar-left { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.toolbar-right { display: flex; align-items: center; gap: var(--space-3); }

.filter-tabs {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3px;
  gap: 2px;
}
.filter-tab {
  padding: 7px 14px;
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}
.filter-tab:hover { color: var(--text-primary); }
.filter-tab.active {
  background: var(--primary);
  color: white;
  box-shadow: var(--shadow-primary);
}

.select-filter {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  background: var(--bg-card);
  cursor: pointer;
  font-family: inherit;
  transition: var(--transition);
}
.select-filter:hover { border-color: var(--gray-300); }
.select-filter:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1); }

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}
.search-box input {
  padding: 9px 14px 9px 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: var(--text-sm);
  width: 240px;
  background: var(--bg-card);
  transition: var(--transition);
  font-family: inherit;
  color: var(--text-primary);
}
.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

/* ---------- 表格 ---------- */
.table-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
}
th {
  padding: 12px var(--space-4);
  text-align: left;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--text-tertiary);
  background: var(--gray-50);
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
td {
  padding: 14px var(--space-4);
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
  font-size: var(--text-base);
  vertical-align: middle;
}
tbody tr { transition: var(--transition-fast); }
tbody tr:hover td { background: var(--gray-50); }
tbody tr:last-child td { border-bottom: none; }

.code {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background: var(--gray-100);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.expand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-tertiary);
  transition: var(--transition-fast);
}
.expand-icon:hover { background: var(--gray-100); color: var(--text-primary); }
.expand-icon.expanded { transform: rotate(90deg); }
.expand-icon .icon { width: 16px; height: 16px; }

.device-expand-row td { background: var(--gray-50) !important; padding: var(--space-4) var(--space-5); }
.device-expand-content { padding: var(--space-3) 0; }
.device-expand-content strong { color: var(--text-primary); font-size: var(--text-base); }
.device-expand-table { width: 100%; margin-top: var(--space-3); border-radius: var(--radius); overflow: hidden; }
.device-expand-table th { padding: 8px 12px; font-size: 11px; }
.device-expand-table td { padding: 10px 12px; font-size: var(--text-sm); background: var(--bg-card) !important; }

/* ---------- 状态标签 ---------- */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
}
.status-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.status-active { background: var(--success-light); color: var(--success-dark); }
.status-active::before { background: var(--success); }
.status-expired { background: var(--danger-light); color: var(--danger-dark); }
.status-expired::before { background: var(--danger); }
.status-unused { background: var(--gray-100); color: var(--gray-600); }
.status-unused::before { background: var(--gray-400); }

/* ---------- 操作按钮组 & Tooltip ---------- */
.action-btns {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}
.action-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}
.action-btn:hover {
  background: var(--gray-100);
}
.action-btn[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: #1e293b;
  color: white;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.action-btn[data-tooltip]::before {
  content: '';
  position: absolute;
  bottom: calc(100% + 3px);
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: #1e293b;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  z-index: 1000;
}
.action-btn[data-tooltip]:hover::after,
.action-btn[data-tooltip]:hover::before {
  opacity: 1;
}

/* ---------- 分页 ---------- */

/* ---------- 分页 ---------- */
.pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4);
  border-top: 1px solid var(--border-light);
}
.pagination-info {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}
.pagination-controls {
  display: flex;
  gap: var(--space-1);
}
.page-btn {
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
}
.page-btn:hover:not(:disabled) { background: var(--gray-50); border-color: var(--gray-300); }
.page-btn.active { background: var(--primary); color: white; border-color: var(--primary); }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.page-btn .icon { width: 14px; height: 14px; }

/* ---------- 版本管理 ---------- */
.version-current-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: var(--space-5);
  box-shadow: var(--shadow-lg);
}
.version-current-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #9333ea 100%);
}
.version-current-bg::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
  top: -100px;
  right: -50px;
  border-radius: 50%;
}
.version-current-content {
  position: relative;
  z-index: 1;
  padding: var(--space-8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: white;
  gap: var(--space-6);
}
.version-current-label {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--space-2);
  font-weight: 500;
}
.version-current-number {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: var(--space-3);
}
.version-current-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.version-tag {
  background: rgba(255,255,255,0.2);
  padding: 3px 12px;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  backdrop-filter: blur(10px);
}
.version-current-date {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
}
.version-current-right { text-align: right; max-width: 400px; }
.version-current-download-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--space-2);
  justify-content: flex-end;
}
.version-current-link {
  color: white;
  text-decoration: underline;
  word-break: break-all;
  font-size: var(--text-base);
  font-family: var(--font-mono);
}

.version-timeline { padding: var(--space-3) var(--space-5); }
.version-timeline-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border-light);
}
.version-timeline-item:last-child { border-bottom: none; }
.version-timeline-version {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--text-primary);
  min-width: 100px;
}
.version-timeline-info { flex: 1; }
.version-timeline-notes {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  margin-top: var(--space-1);
  line-height: 1.6;
}
.version-timeline-date {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

/* ---------- 对话框 ---------- */
.dialog-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease;
}
.dialog {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: slideUp 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.dialog-sm { width: 420px; }
.dialog-md { width: 600px; }
@keyframes slideUp { from { transform: translateY(20px) scale(0.98); opacity: 0; } to { transform: translateY(0) scale(1); opacity: 1; } }

.dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border-light);
}
.dialog-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
}
.dialog-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}
.dialog-close:hover { background: var(--gray-100); color: var(--text-primary); }
.dialog-body { padding: var(--space-6); overflow-y: auto; }
.dialog-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-light);
}

.dialog-warning {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}
.dialog-warning .icon {
  width: 24px;
  height: 24px;
  color: var(--warning);
  flex-shrink: 0;
}
.dialog-warning p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.dialog-result { padding: 0 var(--space-6) var(--space-6); }
.result-divider {
  height: 1px;
  background: var(--border);
  margin-bottom: var(--space-4);
}
.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
}
.result-header h4 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--text-primary);
}
.result-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: var(--gray-50);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}
.result-item button { padding: 4px 10px; font-size: var(--text-xs); }

/* ---------- 加载 ---------- */
.loader-overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}
.loader-spinner {
  width: 44px;
  height: 44px;
  border: 3px solid rgba(255,255,255,0.1);
  border-top-color: var(--primary-lighter);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.loader-text {
  margin-top: var(--space-4);
  color: rgba(255,255,255,0.6);
  font-size: var(--text-sm);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  padding: 12px var(--space-5);
  border-radius: var(--radius);
  color: white;
  font-size: var(--text-base);
  font-weight: 500;
  z-index: 3000;
  animation: slideInRight 0.3s ease;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.toast.success { background: linear-gradient(135deg, #10b981 0%, #059669 100%); }
.toast.error { background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%); }
@keyframes slideInRight { from { transform: translateX(120%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ---------- 空状态 ---------- */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  color: var(--text-muted);
}
.empty-state .icon {
  width: 48px;
  height: 48px;
  color: var(--gray-300);
  margin-bottom: var(--space-4);
}
.empty-state p {
  font-size: var(--text-base);
}

/* ---------- 移动端菜单按钮 ---------- */
.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius);
  transition: var(--transition-fast);
}
.mobile-menu-btn:hover { background: var(--gray-100); color: var(--text-primary); }
.mobile-menu-btn .icon { width: 22px; height: 22px; }

/* ---------- 登录表单容器 ---------- */
.login-form { width: 100%; }
.login-form .form-group:last-of-type { margin-bottom: var(--space-6); }

/* ---------- 侧边栏退出按钮（button元素重置） ---------- */
.sidebar-footer button.nav-item {
  border: none;
  font-family: inherit;
  cursor: pointer;
}

/* ---------- 图标对齐微调 ---------- */
.nav-item svg.nav-icon { margin-right: 0; }
.kpi-card-top .kpi-trend .icon { vertical-align: middle; }

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

@media (max-width: 1024px) {
  .login-left { display: none; }
  .login-right { width: 100%; flex: 1; }
}

@media (max-width: 768px) {
  .mobile-only { display: inline-flex !important; }
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }
  .sidebar.active { transform: translateX(0); }
  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 40;
  }
  .sidebar-overlay.active { display: block; }
  .main-content { margin-left: 0; }
  .content-area { padding: var(--space-4); }
  .topbar { padding: 0 var(--space-4); }
  .kpi-grid { grid-template-columns: 1fr; }
  .welcome-bar { flex-direction: column; align-items: flex-start; }
  .welcome-actions { width: 100%; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .toolbar-left, .toolbar-right { flex-wrap: wrap; }
  .search-box input { width: 100%; }
  .mini-stats { flex-wrap: wrap; }
  .mini-stat { flex: 1; min-width: calc(50% - 8px); }
  .form-grid { grid-template-columns: 1fr; }
  .version-current-content { flex-direction: column; align-items: flex-start; }
  .version-current-right { text-align: left; max-width: 100%; }
  .version-current-download-label { justify-content: flex-start; }
  .dialog-sm, .dialog-md { width: 92%; max-height: 85vh; }
  .pagination { flex-direction: column; gap: var(--space-3); }
}