:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1f2937;
  --bg-card-hover: #283548;
  --border-color: #374151;
  --border-light: #4b5563;
  --text-main: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  --color-danger: #ef4444;
  --color-danger-bg: rgba(239, 68, 68, 0.15);
  --color-danger-border: rgba(239, 68, 68, 0.4);

  --color-silent: #94a3b8;
  --color-silent-bg: rgba(148, 163, 184, 0.1);
  --color-silent-border: rgba(148, 163, 184, 0.3);

  --color-primary: #3b82f6;
  --color-primary-bg: rgba(59, 130, 246, 0.15);

  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-purple: #8b5cf6;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 4px 20px -2px rgba(0, 0, 0, 0.4);
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

.app-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* 顶部状态栏 */
.app-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-icon {
  font-size: 32px;
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.2), rgba(59, 130, 246, 0.2));
  padding: 8px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.header-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #fff;
}

.header-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.badge-target-asn {
  background: var(--color-danger-bg);
  color: #fca5a5;
  border: 1px solid var(--color-danger-border);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-family: monospace;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.status-indicator-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 0, 0, 0.3);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.indicator-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-success);
  box-shadow: 0 0 10px var(--color-success);
  transition: all 0.3s ease;
}

.indicator-dot.connecting {
  background-color: var(--color-warning);
  box-shadow: 0 0 10px var(--color-warning);
}

.indicator-dot.error {
  background-color: var(--color-danger);
  box-shadow: 0 0 10px var(--color-danger);
}

.indicator-text {
  display: flex;
  flex-direction: column;
}

.indicator-label {
  font-weight: 600;
  font-size: 12px;
}

.indicator-sub {
  font-size: 11px;
  color: var(--text-muted);
}

.refresh-countdown-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 0, 0, 0.3);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.countdown-circle {
  font-family: monospace;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-primary);
}

.countdown-meta {
  display: flex;
  flex-direction: column;
}

.meta-label {
  font-size: 12px;
  font-weight: 600;
}

.meta-sub {
  font-size: 11px;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.btn-primary {
  background: #2563eb;
  color: white;
}
.btn-primary:hover {
  background: #1d4ed8;
}

.btn-secondary {
  background: #374151;
  color: #e5e7eb;
  border-color: #4b5563;
}
.btn-secondary:hover {
  background: #4b5563;
}

/* 主容器 */
.main-content {
  flex: 1;
  padding: 24px 28px;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
}

/* 统计卡片网格 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
}

.stat-card.active-danger {
  border-color: var(--color-danger-border);
  background: linear-gradient(145deg, #1f2937, rgba(239, 68, 68, 0.08));
}

.stat-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.stat-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.stat-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 9999px;
  font-weight: 600;
}

.stat-badge.blue {
  background: var(--color-primary-bg);
  color: #60a5fa;
}

.stat-badge.red {
  background: var(--color-danger-bg);
  color: #f87171;
}

.stat-badge.gray {
  background: var(--color-silent-bg);
  color: var(--color-silent);
}

.stat-badge.purple {
  background: rgba(139, 92, 246, 0.15);
  color: #c084fc;
}

.stat-value {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.stat-desc {
  font-size: 12px;
  color: var(--text-muted);
}

.text-danger { color: var(--color-danger); }
.text-muted { color: var(--text-muted); }
.text-purple { color: #a855f7; }

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* 工具栏 */
.toolbar-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 12px 18px;
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
}

.view-tabs {
  display: flex;
  gap: 6px;
}

.tab-btn {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.tab-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

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

.filter-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.status-filters {
  display: flex;
  gap: 6px;
}

.filter-chip {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-chip:hover {
  border-color: var(--border-light);
  color: var(--text-main);
}

.filter-chip.active {
  background: #374151;
  color: white;
  border-color: #6b7280;
}

.filter-chip.chip-active.active {
  background: var(--color-danger-bg);
  border-color: var(--color-danger);
  color: #fca5a5;
}

.filter-chip.chip-silent.active {
  background: var(--color-silent-bg);
  border-color: var(--color-silent);
  color: #cbd5e1;
}

.search-box {
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  gap: 8px;
  min-width: 260px;
}

.search-box input {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 13px;
  width: 100%;
  outline: none;
}

/* 视图面板通用 */
.view-panel {
  display: none;
}
.view-panel.active {
  display: block;
}

.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.view-title {
  font-size: 17px;
  font-weight: 700;
}

.view-badge {
  font-size: 12px;
  color: var(--text-muted);
}

/* 时间线视图 */
.timeline-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
  padding-left: 28px;
}

.timeline-container::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary), var(--border-color));
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
  position: relative;
  transition: all 0.2s ease;
}

.timeline-card:hover {
  border-color: var(--border-light);
  transform: translateX(4px);
}

.timeline-card::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--bg-primary);
}

.timeline-card.has-hijack::before {
  background: var(--color-danger);
  box-shadow: 0 0 10px var(--color-danger);
}

.timeline-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  flex-wrap: wrap;
  gap: 10px;
}

.timeline-time-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.timeline-window-badge {
  background: rgba(255, 255, 255, 0.08);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-family: monospace;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.timeline-status-tag {
  font-size: 12px;
  padding: 3px 9px;
  border-radius: 9999px;
  font-weight: 600;
}

.timeline-status-tag.active {
  background: var(--color-danger-bg);
  color: #f87171;
  border: 1px solid var(--color-danger-border);
}

.timeline-status-tag.silent {
  background: var(--color-silent-bg);
  color: #cbd5e1;
  border: 1px solid var(--color-silent-border);
}

.timeline-operators-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.operator-tag-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #1e293b;
  border: 1px solid #334155;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 13px;
  color: #38bdf8;
}

.timeline-details {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 12px;
  margin-top: 10px;
}

.details-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.details-row .label {
  color: var(--text-muted);
  min-width: 90px;
}

.prefix-badge {
  font-family: monospace;
  background: rgba(0, 0, 0, 0.4);
  padding: 2px 6px;
  border-radius: 4px;
  color: #e2e8f0;
  border: 1px solid #334155;
}

.as-path-chain {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  font-family: monospace;
  font-size: 12px;
}

.as-node {
  background: #334155;
  color: #f1f5f9;
  padding: 2px 6px;
  border-radius: 4px;
}

.as-node.target-hijacker {
  background: #dc2626;
  color: #fff;
  font-weight: 700;
  box-shadow: 0 0 8px rgba(220, 38, 38, 0.6);
}

.as-arrow {
  color: var(--text-muted);
}

/* 运营商矩阵卡片视图 */
.operators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 18px;
}

.operator-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

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

.operator-card.is-active {
  border-color: var(--color-danger);
  box-shadow: 0 4px 20px rgba(239, 68, 68, 0.15);
}

.operator-card.is-silent {
  border-color: var(--color-silent-border);
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 14px;
}

.op-title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.op-geo {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 700;
}

.status-pill.active {
  background: var(--color-danger-bg);
  color: #fca5a5;
  border: 1px solid var(--color-danger);
}

.status-pill.silent {
  background: var(--color-silent-bg);
  color: #cbd5e1;
  border: 1px solid var(--color-silent-border);
}

.card-body {
  margin-bottom: 16px;
}

.op-meta-row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  margin-bottom: 8px;
}

.op-meta-row .label {
  color: var(--text-muted);
}

.op-meta-row .val {
  font-weight: 600;
  color: #e2e8f0;
}

.card-prefixes {
  margin-top: 10px;
}

.prefix-tags-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.card-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 12px;
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* 实时路由流水表格 */
.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: var(--shadow-card);
}

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

.data-table th,
.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  font-size: 13px;
}

.data-table th {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.data-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.loading-placeholder, .empty-placeholder {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 15px;
}

/* 底部栏 */
.app-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sep {
  color: var(--border-color);
}

/* 响应式调整 */
@media (max-width: 768px) {
  .app-header {
    padding: 12px 16px;
  }
  .main-content {
    padding: 16px;
  }
  .toolbar-section {
    flex-direction: column;
    align-items: stretch;
  }
  .view-tabs {
    overflow-x: auto;
  }
  .filter-controls {
    flex-direction: column;
    align-items: stretch;
  }
  .search-box {
    min-width: 100%;
  }
}