:root {
  --bg-core: #05070a;
  --bg-panel: #0a0d14;
  --bg-card: #0f131c;
  --bg-subtle: #141923;
  --border-dim: #1a202c;
  --border-bright: #2d3748;
  --border-focus: #00f0ff;
  --text-white: #ffffff;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-dim: #64748b;
  --mono-cyan: #00f0ff;
  --mono-green: #00ff66;
  --mono-yellow: #ffb800;
  --mono-red: #ff3366;
  --mono-purple: #c084fc;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Consolas, "Liberation Mono", Menlo, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

body {
  background-color: var(--bg-core);
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 28px 28px;
  background-attachment: fixed;
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

.layout {
  max-width: 1480px;
  margin: 0 auto;
  padding: 16px 20px 60px;
}

/* Industrial Header Bar */
.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: var(--bg-panel);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  margin-bottom: 16px;
}

.system-tag {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.system-title {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.system-status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 2px 8px;
  background: rgba(0, 255, 102, 0.08);
  border: 1px solid rgba(0, 255, 102, 0.3);
  color: var(--mono-green);
  border-radius: 2px;
}

.indicator-pulse {
  width: 6px;
  height: 6px;
  background: var(--mono-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--mono-green);
}

.tor-indicator {
  display: none;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 2px 10px;
  background: rgba(192, 132, 252, 0.15);
  border: 1px solid rgba(192, 132, 252, 0.5);
  color: #e9d5ff;
  border-radius: 2px;
  font-weight: 600;
  box-shadow: 0 0 10px rgba(192, 132, 252, 0.2);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-ctrl {
  background: var(--bg-subtle);
  border: 1px solid var(--border-dim);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 6px 14px;
  border-radius: 3px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all .15s;
}

.btn-ctrl:hover {
  border-color: var(--border-bright);
  color: var(--text-white);
}

.btn-ctrl.active {
  background: rgba(0, 240, 255, 0.12);
  border-color: var(--mono-cyan);
  color: var(--mono-cyan);
}

.btn-retest {
  color: var(--mono-cyan);
  border-color: rgba(0, 240, 255, 0.4);
}

.btn-retest:hover {
  background: rgba(0, 240, 255, 0.12);
}

/* Network Mode Notice Banner */
.network-notice {
  background: rgba(255, 184, 0, 0.08);
  border: 1px solid rgba(255, 184, 0, 0.3);
  padding: 8px 14px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--mono-yellow);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.network-notice.proxy-active {
  background: rgba(0, 255, 102, 0.08);
  border-color: rgba(0, 255, 102, 0.3);
  color: var(--mono-green);
}

/* Flag & Country Badge Component */
.flag-box {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-right: 8px;
  vertical-align: middle;
}

.flag-img {
  width: 20px;
  height: 14px;
  border-radius: 2px;
  box-shadow: 0 0 2px rgba(0, 0, 0, 0.7);
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: inline-block;
  vertical-align: middle;
}

.flag-code {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--mono-cyan);
}

/* NOC Hero Layout */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 16px;
  margin-bottom: 16px;
}

.panel-box {
  background: var(--bg-panel);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  padding: 16px;
  position: relative;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-dim);
  padding-bottom: 10px;
  margin-bottom: 14px;
}

.panel-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-sub-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
}

/* Local Ingress IP Metrics */
.ip-metric-box {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.ip-text-large {
  font-family: var(--font-mono);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--mono-cyan);
  letter-spacing: -0.02em;
}

.ip-geo-line {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.badge-outline {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 2px;
  font-weight: 600;
}

.badge-res {
  background: rgba(0, 255, 102, 0.08);
  border: 1px solid rgba(0, 255, 102, 0.35);
  color: var(--mono-green);
}

.badge-dc {
  background: rgba(255, 184, 0, 0.08);
  border: 1px solid rgba(255, 184, 0, 0.35);
  color: var(--mono-yellow);
}

.badge-biz {
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.35);
  color: var(--mono-cyan);
}

.badge-cell {
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: #38bdf8;
}

.badge-edu {
  background: rgba(249, 115, 22, 0.08);
  border: 1px solid rgba(249, 115, 22, 0.35);
  color: #f97316;
}

.badge-tor {
  background: rgba(192, 132, 252, 0.15);
  border: 1px solid rgba(192, 132, 252, 0.5);
  color: #e9d5ff;
}

.meta-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 14px;
}

.stat-chip {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: 3px;
  padding: 8px 12px;
}

.stat-chip-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 3px;
}

.stat-chip-val {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Core Pings Grid */
.core-ping-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.core-ping-item {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: 3px;
  padding: 8px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.core-ping-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

.core-ping-name {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
}

.core-ping-ms {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  font-weight: 700;
}

/* Egress Summary Strip */
.egress-strip {
  background: var(--bg-panel);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  padding: 14px 16px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.egress-strip-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.egress-chips-container {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  flex: 1;
}

.loading-hint {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.egress-node-badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--bg-card);
  border: 1px solid var(--border-bright);
  padding: 4px 10px;
  border-radius: 3px;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--mono-cyan);
}

.egress-node-count {
  font-size: 0.68rem;
  color: var(--text-dim);
  border-left: 1px solid var(--border-dim);
  padding-left: 6px;
}

/* Custom Ping Terminal Probe */
.custom-probe-box {
  background: var(--bg-panel);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  padding: 14px 16px;
  margin-bottom: 16px;
}

.probe-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.probe-input-bar {
  display: flex;
  gap: 8px;
}

.input-mono {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  color: var(--text-white);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 8px 14px;
  border-radius: 3px;
  outline: none;
}

.input-mono:focus {
  border-color: var(--mono-cyan);
}

.btn-terminal {
  background: #1e293b;
  border: 1px solid var(--border-bright);
  color: var(--mono-cyan);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 3px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all .15s;
}

.btn-terminal:hover {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--mono-cyan);
}

.probe-result-panel {
  display: none;
  margin-top: 10px;
  padding: 10px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* Matrix Table Section */
.matrix-container {
  background: var(--bg-panel);
  border: 1px solid var(--border-dim);
  border-radius: 4px;
  padding: 16px;
}

.matrix-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  flex-wrap: wrap;
  gap: 12px;
}

.category-bar {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  align-items: center;
}

.cat-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 5px 10px;
  border-radius: 2px;
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}

.cat-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-bright);
}

.cat-btn.active {
  background: var(--bg-subtle);
  border-color: var(--mono-cyan);
  color: var(--mono-cyan);
  font-weight: 600;
}

.search-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-box {
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  color: var(--text-white);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: 3px;
  width: 220px;
  outline: none;
}

.search-box:focus {
  border-color: var(--mono-cyan);
}

.matrix-counter {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  white-space: nowrap;
}

/* Industrial Grid Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.data-table th {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-dim);
  background: rgba(0, 0, 0, 0.2);
}

.data-table td {
  padding: 9px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  vertical-align: middle;
}

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

.site-title-col {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-logo {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  object-fit: contain;
  background: #111827;
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}

.site-code {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-white);
  line-height: 1.2;
}

.site-host {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  line-height: 1.2;
}

.tag-cat {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 2px 6px;
  border-radius: 2px;
  background: var(--bg-card);
  border: 1px solid var(--border-dim);
  color: var(--text-secondary);
}

.ip-val {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--mono-cyan);
}

.geo-val {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.flag-emoji {
  font-size: 1.05rem;
  margin-right: 6px;
  vertical-align: -1px;
}

.rtt-val {
  font-family: var(--font-mono);
  font-weight: 700;
}

.rtt-good { color: var(--mono-green); }
.rtt-warn { color: var(--mono-yellow); }
.rtt-bad { color: var(--mono-red); }
.rtt-fail { color: var(--text-dim); }

/* Deep Inspection Mode Styles */
.btn-mode {
  background: var(--bg-card);
  border: 1px solid var(--border-bright);
  color: var(--mono-cyan);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  padding: 6px 12px;
  border-radius: 3px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all .2s;
}

.btn-mode.active-deep {
  background: rgba(192, 132, 252, 0.18);
  border-color: #c084fc;
  color: #e9d5ff;
  box-shadow: 0 0 10px rgba(192, 132, 252, 0.3);
}

/* Latency Strip & Segment Dots */
.latency-cell-box {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.latency-strip-track {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 6px;
  width: 95px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 2px;
  padding: 1px;
}

.latency-dot {
  flex: 1;
  height: 100%;
  border-radius: 1px;
  background: rgba(255, 255, 255, 0.1);
  transition: background .15s;
}

.dot-pending { background: rgba(255, 255, 255, 0.12); }
.dot-fast { background: #00ff66; box-shadow: 0 0 4px rgba(0, 255, 102, 0.6); }  /* <160ms 极速亮绿 */
.dot-good { background: #00f0ff; box-shadow: 0 0 4px rgba(0, 240, 255, 0.6); }  /* 160-280ms 优良青色 */
.dot-warn { background: #ffb800; box-shadow: 0 0 4px rgba(255, 184, 0, 0.6); }  /* 280-450ms 黄色 */
.dot-bad  { background: #f97316; box-shadow: 0 0 4px rgba(249, 115, 22, 0.6); } /* >450ms 橙红 */
.dot-fail { background: #ef4444; }                                               /* 阻断/丢包 */

/* Footer Terminal Info */
.footer-terminal {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 24px;
  padding: 12px 16px;
  border-top: 1px solid var(--border-dim);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 10px;
}

@media (max-width: 960px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}