:root {
  --bg-primary: #060911;
  --bg-secondary: #0A0E1A;
  --bg-surface: #131B2E;
  --bg-surface-hover: #1E293B;
  --cyan-neon: #00E5FF;
  --green-neon: #10B981;
  --red-neon: #EF4444;
  --yellow-neon: #F59E0B;
  --magenta-neon: #EC4899;
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --border-color: #1E293B;
  --border-bright: #334155;
  --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-main);
  min-height: 100vh;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(0, 229, 255, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.04) 0%, transparent 40%);
}

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

/* Top Navigation */
.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.status-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--red-neon);
  box-shadow: 0 0 10px var(--red-neon);
  transition: all 0.3s ease;
}

.status-indicator.connected {
  background: var(--green-neon);
  box-shadow: 0 0 12px var(--green-neon);
}

.status-indicator.connecting {
  background: var(--yellow-neon);
  box-shadow: 0 0 12px var(--yellow-neon);
}

.brand-text h1 {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 1px;
  font-family: var(--font-mono);
  color: #FFF;
}

.brand-text .sub {
  font-size: 10px;
  font-weight: 700;
  color: var(--red-neon);
  letter-spacing: 0.5px;
}

.brand-text .sub.connected {
  color: var(--green-neon);
}

.nav-tabs {
  display: flex;
  gap: 6px;
  background: var(--bg-primary);
  padding: 4px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.nav-tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-tab:hover {
  color: #FFF;
  background: rgba(255, 255, 255, 0.05);
}

.nav-tab.active {
  background: var(--cyan-neon);
  color: #000;
  font-weight: 700;
}

.telemetry-bar {
  display: flex;
  gap: 12px;
}

.stat-pill {
  display: flex;
  flex-direction: column;
  background: var(--bg-surface);
  padding: 4px 12px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

.stat-pill .label {
  font-size: 9px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.stat-pill .val {
  font-size: 13px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--cyan-neon);
}

.btn-action {
  background: var(--bg-surface);
  border: 1px solid var(--border-bright);
  color: var(--text-primary);
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-action:hover {
  border-color: var(--cyan-neon);
  color: var(--cyan-neon);
}

/* Tab Content */
.tab-content {
  display: none;
  padding: 20px 24px;
  flex: 1;
}

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

/* Home Layout: Gamepad */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 20px;
  height: calc(100vh - 100px);
}

.canvas-section {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: 16px;
  border: 1px solid var(--border-color);
  padding: 10px;
  overflow: hidden;
}

.canvas-wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

#controllerCanvas {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.sidebar-inspector {
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow-y: auto;
}

.panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
}

.panel h2 {
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

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

.panel-header h2 {
  margin-bottom: 0;
}

.badge {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(0, 229, 255, 0.15);
  color: var(--cyan-neon);
  font-family: var(--font-mono);
}

.metric-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 12px;
}

.metric-row:last-child {
  border-bottom: none;
}

.metric-key {
  color: var(--text-muted);
}

.metric-val {
  font-weight: 600;
  color: #FFF;
}

.metric-val.highlight {
  color: var(--cyan-neon);
}

.metric-val.mono {
  font-family: var(--font-mono);
  font-size: 11px;
}

.hex-viewer pre {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--bg-primary);
  padding: 10px;
  border-radius: 6px;
  color: var(--green-neon);
  border: 1px solid var(--border-color);
  word-break: break-all;
  white-space: pre-wrap;
  line-height: 1.6;
}

.log-stream {
  height: 130px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.log-entry {
  padding: 2px 0;
}

.log-entry.info { color: var(--text-muted); }
.log-entry.success { color: var(--green-neon); }
.log-entry.warn { color: var(--yellow-neon); }
.log-entry.error { color: var(--red-neon); }

/* TAB 2: Keyboard HUD */
.keyboard-view-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.keyboard-header-panel {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.active-keys-badge {
  background: var(--bg-surface);
  border: 1px solid var(--border-bright);
  padding: 8px 16px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.highlight-keys {
  color: var(--cyan-neon);
  font-weight: bold;
}

.virtual-keyboard-layout {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--bg-secondary);
  padding: 24px;
  border-radius: 16px;
  border: 1px solid var(--border-color);
}

.kb-row {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.key {
  height: 48px;
  min-width: 48px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  transition: all 0.1s ease;
  user-select: none;
  padding: 0 10px;
}

.key.key-gaming {
  border-color: rgba(0, 229, 255, 0.4);
  color: var(--cyan-neon);
}

.key.key-esc, .key.key-caps, .key.key-tab { min-width: 64px; }
.key.key-backspace, .key.key-enter { min-width: 84px; }
.key.key-shift { min-width: 100px; }
.key.key-ctrl, .key.key-alt { min-width: 60px; }
.key.key-space { flex: 1; max-width: 360px; }

.key.pressed {
  background: var(--cyan-neon);
  color: #000;
  box-shadow: 0 0 16px var(--cyan-neon);
  transform: translateY(2px);
}

/* TAB 3: Admin Management & Google Auth */
.admin-wrapper {
  max-width: 1200px;
  margin: 0 auto;
}

.admin-login-card {
  max-width: 460px;
  margin: 60px auto;
  text-align: center;
  padding: 40px 30px;
  border: 1px solid rgba(0, 229, 255, 0.3);
  box-shadow: 0 0 30px rgba(0, 229, 255, 0.08);
}

.admin-lock-icon {
  margin-bottom: 16px;
}

.admin-notice {
  color: var(--text-muted);
  font-size: 12px;
  margin-bottom: 24px;
}

.google-btn-wrapper {
  display: flex;
  justify-content: center;
  margin: 16px 0;
}

.btn-google-auth {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  background: #FFF;
  color: #333;
  border: 1px solid #CCC;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-google-auth:hover {
  background: #F1F5F9;
}

.auth-hint {
  display: block;
  margin-top: 8px;
  font-size: 11px;
  color: var(--cyan-neon);
  font-family: var(--font-mono);
}

.auth-error {
  color: var(--red-neon);
  font-size: 12px;
  margin-top: 14px;
  min-height: 18px;
}

.admin-dashboard-view.hidden,
.admin-login-card.hidden {
  display: none;
}

.admin-user-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding: 12px 20px;
}

.admin-profile-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Admin Sub Navigation */
.admin-subnav {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.admin-subnav-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.admin-subnav-btn:hover {
  color: #FFF;
  border-color: var(--border-bright);
}

.admin-subnav-btn.active {
  background: rgba(0, 229, 255, 0.15);
  border-color: var(--cyan-neon);
  color: var(--cyan-neon);
}

.admin-view-section {
  display: none;
}

.admin-view-section.active {
  display: block;
}

.admin-top-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.config-card h3, .stats-summary-card h3 {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin-bottom: 12px;
}

.config-row {
  margin-bottom: 10px;
}

.switch-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  cursor: pointer;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  font-size: 12px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.admin-table th {
  text-align: left;
  padding: 10px;
  background: var(--bg-surface);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.admin-table td {
  padding: 10px;
  border-bottom: 1px solid var(--border-color);
}

.admin-table code {
  font-family: var(--font-mono);
  color: var(--cyan-neon);
  font-size: 11px;
}

.btn-sm {
  background: var(--bg-surface);
  border: 1px solid var(--border-bright);
  color: #FFF;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}

.btn-sm:hover {
  background: var(--bg-surface-hover);
  border-color: var(--cyan-neon);
}

.btn-warn-sm {
  border-color: var(--yellow-neon);
  color: var(--yellow-neon);
}

.btn-danger-sm {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--red-neon);
  color: var(--red-neon);
}

.manual-block-row {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.manual-block-row input {
  flex: 1;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: #FFF;
  padding: 8px 12px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.blocklist-split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.blocklist-column h3 {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin-bottom: 8px;
}

/* D3 Latency Chart */
.chart-metrics-strip {
  display: flex;
  gap: 8px;
}

.chart-metric-badge {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
}

.chart-metric-badge .lbl {
  font-size: 8px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.chart-metric-badge .val {
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
}

.chart-metric-badge .val.cyan { color: var(--cyan-neon); }
.chart-metric-badge .val.magenta { color: var(--magenta-neon); }
.chart-metric-badge .val.red { color: var(--red-neon); }
.chart-metric-badge .val.yellow { color: var(--yellow-neon); }

.d3-chart-container {
  width: 100%;
  height: 240px;
  margin: 16px 0;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.chart-footer-legend {
  display: flex;
  gap: 16px;
  align-items: center;
  font-size: 11px;
  color: var(--text-muted);
}

.legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 4px;
}

.legend-dot.cyan { background: var(--cyan-neon); }
.legend-dot.magenta { background: var(--magenta-neon); }
.legend-dot.yellow { background: var(--yellow-neon); }
.chart-refresh-note { margin-left: auto; font-size: 10px; font-family: var(--font-mono); }

/* Tunnel & Feeder Guides */
.tunnel-steps {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 16px;
}

.step-card {
  display: flex;
  gap: 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 16px;
}

.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--cyan-neon);
  color: #000;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
}

.step-details h3 {
  font-size: 14px;
  margin-bottom: 4px;
}

.step-details p {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.code-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-secondary);
  border: 1px solid var(--border-bright);
  padding: 8px 12px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan-neon);
}

.btn-copy {
  background: var(--bg-surface);
  border: 1px solid var(--border-bright);
  color: #FFF;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 11px;
}

.highlight-url {
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid var(--cyan-neon);
  padding: 10px 16px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan-neon);
}

.arch-overview-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.arch-step-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 16px;
}

.step-badge {
  font-size: 9px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--cyan-neon);
  letter-spacing: 1px;
}

.arch-step-box h4 {
  font-size: 14px;
  margin: 6px 0 10px;
}

.arch-step-box ul {
  font-size: 11px;
  color: var(--text-secondary);
  padding-left: 16px;
  line-height: 1.6;
}