/* ═══════════════════════════════════════════════════════════════════════
   TCB Graph Visualizer — Styles
   Theme-aware professional dashboard (dark default, toggleable light)
   ═══════════════════════════════════════════════════════════════════════ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ─── Dark theme (default) ─────────────────────────────────────────── */
:root {
  color-scheme: dark;
  --overlay-opacity: 0.6;
  --bg: #0b1120;
  --surface: #131c2e;
  --surface2: #1a2540;
  --surface3: #1f2d4a;
  --border: rgba(148, 196, 255, 0.08);
  --border-strong: rgba(148, 196, 255, 0.15);
  --tile-border: rgba(148, 196, 255, 0.25);
  --text: #edf2f7;
  --text2: #8b9dc3;
  --accent: #60a5fa;
  --accent2: #4ade80;
  --warning: #fbbf24;
  --danger: #f87171;
  --tcb-green: #4ade80;
  --tooltip-bg: rgba(19, 28, 46, 0.92);
  --tooltip-header-bg: rgba(15, 22, 38, 0.95);
  --radius: 3px;
  --radius-lg: 4px;
  --font: 'Segoe UI Variable', 'Segoe UI', -apple-system, BlinkMacSystemFont, Helvetica, Arial, sans-serif;
  --header-gradient: linear-gradient(135deg, #1b2a4a 0%, #1e3a5f 50%, #162d50 100%);
  --header-border: rgba(96, 165, 250, 0.18);
  --header-shadow: rgba(0, 0, 0, 0.45);
  --btn-active-text: #0f172a;
  --shadow: rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(148, 196, 255, 0.06);
  --hover-overlay: rgba(96, 165, 250, 0.14);
  --glow-accent: rgba(96, 165, 250, 0.15);
  --glow-green: rgba(74, 222, 128, 0.12);
  --glow-danger: rgba(248, 113, 113, 0.12);
  --glass: rgba(19, 28, 46, 0.7);
  --glass-border: rgba(148, 196, 255, 0.1);
  --canvas-edge: rgba(148, 196, 255, 0.35);
  --canvas-edge-hi: rgba(180, 215, 255, 0.85);
  --tcb-green-bg: rgba(74, 222, 128, 0.12);
  --warning-bg: rgba(251, 191, 36, 0.1);
  --accent-bg: rgba(96, 165, 250, 0.1);
  --card-shade: rgba(148, 196, 255, 0.08);
  --warn-banner-bg: rgba(255, 248, 220, 0.12);
  --warn-banner-border: rgba(251, 191, 36, 0.4);
  --warn-banner-text: #fff3b0;
}

/* ─── Light theme ──────────────────────────────────────────────────── */
[data-theme='light'] {
  color-scheme: light;
  --overlay-opacity: 0.5;
  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface2: #f0f2f5;
  --surface3: #e8ecf0;
  --border: rgba(0, 0, 0, 0.12);
  --border-strong: rgba(0, 0, 0, 0.2);
  --tile-border: rgba(0, 0, 0, 0.18);
  --text: #1a1a2e;
  --text2: #64748b;
  --accent: #2563eb;
  --accent2: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --tcb-green: #16a34a;
  --tooltip-bg: rgba(255, 255, 255, 0.95);
  --tooltip-header-bg: rgba(244, 246, 248, 0.98);
  --header-gradient: #0078d4;
  --header-border: rgba(0, 100, 180, 0.2);
  --header-shadow: rgba(0, 0, 0, 0.08);
  --btn-active-text: #ffffff;
  --shadow: rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.04);
  --hover-overlay: rgba(37, 99, 235, 0.1);
  --glow-accent: rgba(37, 99, 235, 0.08);
  --glow-green: rgba(22, 163, 74, 0.08);
  --glow-danger: rgba(220, 38, 38, 0.08);
  --glass: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(0, 0, 0, 0.06);
  --canvas-edge: rgba(37, 99, 235, 0.3);
  --canvas-edge-hi: rgba(37, 99, 235, 0.6);
  --tcb-green-bg: rgba(22, 163, 74, 0.1);
  --warning-bg: rgba(217, 119, 6, 0.1);
  --accent-bg: rgba(37, 99, 235, 0.08);
  --card-shade: rgba(0, 0, 0, 0.05);
  --warn-banner-bg: #fef3c7;
  --warn-banner-border: #f59e0b;
  --warn-banner-text: #78350f;
}

/* ─── Fan-out warning banner (theme-aware) ───────────────────────── */
.fanout-warn-banner {
  padding: 8px 14px;
  margin-bottom: 10px;
  background: var(--warn-banner-bg);
  border: 1px solid var(--warn-banner-border);
  border-radius: 3px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--warn-banner-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

html,
body {
  height: 100%;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

/* Theme transition — applied briefly during toggle via JS.
   Targets key containers instead of every element for smooth 60 fps switching. */
.theme-transitioning {
  /* Body / root surfaces */
  transition:
    background-color 0.2s ease,
    color 0.2s ease !important;
}

.theme-transitioning .app-header,
.theme-transitioning .left-panel,
.theme-transitioning .right-panel,
.theme-transitioning .detail-panel,
.theme-transitioning .overview-panel,
.theme-transitioning .tab-bar,
.theme-transitioning .toolbar,
.theme-transitioning .search-box,
.theme-transitioning .stat-card,
.theme-transitioning .tile,
.theme-transitioning .modal-overlay,
.theme-transitioning .modal-content,
.theme-transitioning .tooltip,
.theme-transitioning .edge-column-tooltip,
.theme-transitioning .edge-detail-tooltip,
.theme-transitioning table,
.theme-transitioning th,
.theme-transitioning td,
.theme-transitioning input,
.theme-transitioning select,
.theme-transitioning button,
.theme-transitioning .fanout-warn-banner,
.theme-transitioning #loading-screen,
.theme-transitioning header,
.theme-transitioning .vtable-container,
.theme-transitioning .vtable-header,
.theme-transitioning .vtable-row,
.theme-transitioning .overview-tab-panel,
.theme-transitioning .filters-row input,
.theme-transitioning .filters-row select,
.theme-transitioning .canvas-tooltip,
.theme-transitioning .edge-tooltip,
.theme-transitioning .weight-tooltip,
.theme-transitioning .split-right,
.theme-transitioning .viz-header,
.theme-transitioning .profile-menu,
.theme-transitioning .nav-btn,
.theme-transitioning .tab-btn,
.theme-transitioning .btn-small,
.theme-transitioning .badge,
.theme-transitioning .dist-bar,
.theme-transitioning .overview-tab,
.theme-transitioning .unreachable-msg,
.theme-transitioning .split-divider {
  transition:
    background-color 0.2s ease,
    background 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease !important;
}

.theme-transitioning svg,
.theme-transitioning svg * {
  transition:
    fill 0.2s ease,
    stroke 0.2s ease !important;
}

/* Loading Screen */
#loading-screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  z-index: 1000;
  perspective: 600px;
  transition: opacity 0.6s ease 0.15s;
}
#loading-screen.hidden {
  opacity: 0;
  pointer-events: none;
}
#loading-screen h1 {
  font-size: 22px;
  margin-bottom: 8px;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.3px;
}
#loading-screen .loading-subtitle {
  font-size: 13px;
  color: var(--text2);
  margin-bottom: 28px;
  font-weight: 400;
}
#loading-screen .progress-bar {
  width: 360px;
  max-width: 85vw;
  height: 6px;
  background: var(--surface2);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.15);
}
#loading-screen .progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 60%, white), var(--accent));
  background-size: 200% 100%;
  border-radius: 3px;
  transition: width 0.3s ease;
  animation: progressShimmer 2s ease-in-out infinite;
  box-shadow: 0 0 8px color-mix(in srgb, var(--accent) 50%, transparent);
}
/* Indeterminate stripe when width is still 0% */
#loading-screen .progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 3px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--accent) 30%,
    color-mix(in srgb, var(--accent) 60%, white) 50%,
    var(--accent) 70%,
    transparent 100%
  );
  background-size: 40% 100%;
  animation: indeterminateStripe 1.5s ease-in-out infinite;
}
#loading-screen .progress-bar.has-progress::after {
  display: none;
}
@keyframes progressShimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}
@keyframes indeterminateStripe {
  0% {
    background-position: -40% 0;
  }
  100% {
    background-position: 140% 0;
  }
}
#loading-screen .progress-msg {
  margin-top: 14px;
  color: var(--text2);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2px;
}
#loading-screen .error-msg {
  margin-top: 16px;
  color: var(--danger);
  font-size: 14px;
  max-width: 600px;
  text-align: center;
}
#loading-screen .loading-logo {
  margin-bottom: 20px;
  animation: logoHeartbeat 1.4s ease-in-out infinite;
  filter: drop-shadow(0 0 12px rgba(0, 120, 212, 0.35));
}
@keyframes logoHeartbeat {
  0% {
    transform: scale(1);
    filter: drop-shadow(0 0 12px rgba(0, 120, 212, 0.35));
  }
  14% {
    transform: scale(1.18);
    filter: drop-shadow(0 0 20px rgba(0, 120, 212, 0.55));
  }
  28% {
    transform: scale(1);
    filter: drop-shadow(0 0 12px rgba(0, 120, 212, 0.35));
  }
  42% {
    transform: scale(1.12);
    filter: drop-shadow(0 0 16px rgba(0, 120, 212, 0.45));
  }
  56% {
    transform: scale(1);
    filter: drop-shadow(0 0 12px rgba(0, 120, 212, 0.35));
  }
  100% {
    transform: scale(1);
    filter: drop-shadow(0 0 12px rgba(0, 120, 212, 0.35));
  }
}

/* App Container */
#app {
  display: none;
  height: 100%;
  flex-direction: column;
}
#app.visible {
  display: flex;
}

/* Header */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  height: 40px;
  background: var(--header-gradient);
  border-bottom: 1px solid var(--header-border);
  box-shadow: 0 1px 4px var(--header-shadow);
  transition:
    background 0.3s ease,
    border-color 0.3s ease;
  flex-shrink: 0;
}
header h1 {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.3px;
  margin: 0;
  display: flex;
  align-items: center;
  line-height: 1;
}
header h1 span {
  color: #ffffff;
  font-weight: 800;
}
/* Global search */
#global-search-input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}
#global-search-input:focus {
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.22);
}
.global-search-item:hover {
  background: var(--hover-overlay, rgba(24, 144, 241, 0.08));
}
.nav-btn {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 7px 18px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s ease;
  letter-spacing: -0.1px;
}
.nav-btn:hover {
  background: var(--surface3);
  border-color: var(--border-strong);
}
.nav-btn.active {
  background: var(--accent);
  color: var(--btn-active-text);
  border-color: var(--accent);
  box-shadow: 0 0 16px var(--glow-accent);
  font-weight: 600;
}
.nav-icon-btn {
  padding: 6px 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  min-width: 30px;
}
.nav-icon-btn svg {
  display: block;
  flex-shrink: 0;
}
/* Nav buttons inside header — white text on blue/dark header */
header .nav-btn {
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.85);
  border-color: rgba(255, 255, 255, 0.1);
}
header .nav-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

/* User badge */
.user-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  position: relative;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius);
  transition: background 0.15s;
}
.user-badge:hover {
  background: var(--hover-overlay);
}
.user-name-block {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.2;
}
.user-name {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}
.user-email {
  font-size: 9px;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 400;
}
.user-chevron {
  font-size: 10px;
  color: rgba(255, 255, 255, 0.7);
  margin-left: 2px;
  transition: transform 0.2s;
}
.user-badge.menu-open .user-chevron {
  transform: rotate(180deg);
}

/* Profile dropdown menu */
.profile-menu {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  min-width: 110px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  z-index: 2000;
  overflow: hidden;
}
.profile-menu.visible {
  display: block;
}
.profile-menu-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  padding: 7px 14px;
  border: none;
  background: none;
  color: var(--text);
  font-size: 12px;
  cursor: pointer;
  transition: background 0.12s;
  white-space: nowrap;
}
.profile-menu-item:hover {
  background: var(--hover-overlay);
  color: var(--text);
}
.profile-menu-icon {
  font-size: 14px;
}

/* Main content */
main {
  flex: 1;
  padding: 20px;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}
#overview-page {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  gap: 16px;
}
#overview-page.hidden {
  display: none;
}

/* ─── Overview Hero Banner ─────────────────────────────────────────────── */
.overview-hero {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  box-shadow: var(--shadow-lg);
}
.overview-hero .tiles {
  flex: 1;
  margin-bottom: 0;
  gap: 8px;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  align-content: center;
}
.overview-hero .tile {
  padding: 10px 8px;
}
.overview-hero .tile .value {
  font-size: 20px;
}
.overview-hero .tile .label {
  font-size: 9px;
}

/* ─── Hop filter select in graph viz header ────────────────────────────── */
.hop-filter-select {
  font-size: 11px;
  padding: 3px 6px;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.15s;
}
.hop-filter-select:hover,
.hop-filter-select:focus {
  border-color: var(--accent);
  outline: none;
}

/* Overview tabs — old styles removed, see Edge Browser-style Tabs below */

/* Tab content panels */
.tab-panel {
  display: none;
}
.tab-panel.active {
  display: block;
}

/* Summary tiles */
.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}
.tile {
  background: var(--surface2);
  border: 2px solid var(--tile-border, var(--border-strong));
  border-radius: var(--radius-lg);
  padding: 18px 16px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}
.tile::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 60%, transparent));
  opacity: 0.7;
}

.tile:hover {
  transform: translateY(-3px);
  box-shadow:
    var(--shadow-lg),
    0 0 24px var(--glow-accent);
  background: var(--surface2);
  border-color: var(--accent);
}
.tile .value {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.5px;
}
.tile .label {
  font-size: 11px;
  color: var(--text2);
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}
.tile.green::before {
  background: linear-gradient(90deg, var(--tcb-green), color-mix(in srgb, var(--tcb-green) 60%, transparent));
}
.tile.green .value {
  color: var(--tcb-green);
}
.tile.green:hover {
  box-shadow:
    var(--shadow-lg),
    0 0 20px var(--glow-green);
}
.tile.orange::before {
  background: linear-gradient(90deg, var(--warning), color-mix(in srgb, var(--warning) 60%, transparent));
}
.tile.orange .value {
  color: var(--warning);
}
.tile.red::before {
  background: linear-gradient(90deg, var(--danger), color-mix(in srgb, var(--danger) 60%, transparent));
}
.tile.red .value {
  color: var(--danger);
}
.tile.red:hover {
  box-shadow:
    var(--shadow-lg),
    0 0 20px var(--glow-danger);
}
.tile.blue::before {
  background: linear-gradient(90deg, #58a6ff, color-mix(in srgb, #58a6ff 60%, transparent));
}
.tile.blue .value {
  color: #58a6ff;
}
.tile.blue:hover {
  box-shadow:
    var(--shadow-lg),
    0 0 20px rgba(88, 166, 255, 0.35);
}
.tile.purple::before {
  background: linear-gradient(90deg, #bc8cff, color-mix(in srgb, #bc8cff 60%, transparent));
}
.tile.purple .value {
  color: #bc8cff;
}
.tile.purple:hover {
  box-shadow:
    var(--shadow-lg),
    0 0 20px rgba(188, 140, 255, 0.35);
}
.tile.cyan::before {
  background: linear-gradient(90deg, #39d2c0, color-mix(in srgb, #39d2c0 60%, transparent));
}
.tile.cyan .value {
  color: #39d2c0;
}
.tile.cyan:hover {
  box-shadow:
    var(--shadow-lg),
    0 0 20px rgba(57, 210, 192, 0.35);
}
.tile.pink::before {
  background: linear-gradient(90deg, #f472b6, color-mix(in srgb, #f472b6 60%, transparent));
}
.tile.pink .value {
  color: #f472b6;
}
.tile.pink:hover {
  box-shadow:
    var(--shadow-lg),
    0 0 20px rgba(244, 114, 182, 0.35);
}
.tile.amber::before {
  background: linear-gradient(90deg, #f0b429, color-mix(in srgb, #f0b429 60%, transparent));
}
.tile.amber .value {
  color: #f0b429;
}
.tile.amber:hover {
  box-shadow:
    var(--shadow-lg),
    0 0 20px rgba(240, 180, 41, 0.35);
}

/* ─── Hop Tiles (display only) ────────────────────────────────────────── */
.tile.hop-tile {
  cursor: default;
}

/* ─── Edge Type Link (clickable in tooltip) ──────────────────────────── */
.edge-type-link {
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 2px;
}
.edge-type-link:hover {
  color: var(--text);
  text-decoration-style: solid;
}

/* ─── Edge Type Info Modal ────────────────────────────────────────────── */
.etm-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, var(--overlay-opacity, 0.9));
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  align-items: center;
  justify-content: center;
}
.etm-overlay.visible {
  display: flex;
}
.etm-dialog {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 24px 28px;
  min-width: 380px;
  max-width: 90vw;
  width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.etm-close {
  position: absolute;
  top: 12px;
  right: 14px;
  background: none;
  border: none;
  color: var(--text2);
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 3px;
  z-index: 1;
  transition:
    background 0.15s,
    color 0.15s;
}
.etm-close:hover {
  background: var(--surface2);
  color: var(--text);
}
.etm-title {
  margin: 0 0 4px 0;
  font-size: 16px;
  color: var(--accent);
  padding-right: 32px;
  flex-shrink: 0;
  text-align: center;
}
.etm-subtitle {
  text-align: center;
  margin: 0 0 10px 0;
}
.tooltip-arrow {
  font-size: 1.3em;
  font-weight: 700;
  vertical-align: middle;
  margin: 0 2px;
  display: inline-block;
}
.etm-body {
  font-size: 13px;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
  scrollbar-color: var(--border) transparent;
}
.etm-body::-webkit-scrollbar {
  width: 6px;
}
.etm-body::-webkit-scrollbar-track {
  background: transparent;
}
.etm-body::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}
.etm-body::-webkit-scrollbar-thumb:hover {
  background: var(--text2);
}
.etm-access-info {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  border-radius: 6px;
  padding: 10px 14px;
  margin-bottom: 12px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text);
}
.etm-access-info svg {
  color: var(--accent);
}
.etm-access-info a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}
.etm-access-info a:hover {
  text-decoration: underline;
}
.etm-section {
  margin-bottom: 14px;
  border-radius: 6px;
}
.etm-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}
.etm-value {
  color: var(--text);
  line-height: 1.5;
}

/* ─── Bug/Feedback Rich Text Editor ────────────────────────────── */
.bf-richtext {
  min-height: 100px;
  max-height: 250px;
  overflow-y: auto;
  padding: 8px 10px;
  border: 1.5px solid rgba(148, 163, 184, 0.4);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  line-height: 1.5;
  outline: none;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.bf-richtext:hover {
  border-color: var(--accent);
}
.bf-richtext:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
}
[data-theme='light'] .bf-richtext {
  border-color: #c0c8d0;
}
[data-theme='light'] .bf-richtext:hover,
[data-theme='light'] .bf-richtext:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}
.bf-richtext:empty::before {
  content: attr(data-placeholder);
  color: var(--text2);
  opacity: 0.6;
  pointer-events: none;
  white-space: pre-wrap;
}
.bf-richtext img {
  max-width: 100%;
  max-height: 200px;
  border-radius: 4px;
  margin: 4px 0;
  border: 1px solid var(--border);
}
.bf-richtext code {
  background: var(--surface2);
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 12px;
  font-family: 'Cascadia Code', 'Fira Code', monospace;
}
.bf-richtext pre {
  background: var(--surface2);
  padding: 8px;
  border-radius: 4px;
  overflow-x: auto;
  font-size: 12px;
  font-family: 'Cascadia Code', 'Fira Code', monospace;
  margin: 4px 0;
}

.etm-export-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text2);
  cursor: pointer;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  transition:
    background 0.15s,
    color 0.15s,
    border-color 0.15s;
}
.etm-export-btn:hover {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--accent);
}
.etm-code-wrap {
  position: relative;
  margin-top: 6px;
}
.etm-code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 16px 18px;
  font-family: 'Cascadia Code', 'Fira Code', Consolas, monospace;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-all;
  overflow-x: auto;
  max-height: 220px;
  overflow-y: auto;
  margin: 0;
  scrollbar-color: var(--border) transparent;
}
.etm-code::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
.etm-code::-webkit-scrollbar-track {
  background: transparent;
}
.etm-code::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}
.etm-code code {
  display: block;
  font-family: inherit;
  font-size: inherit;
}
/* KQL syntax colors */
.kql-func {
  color: #0891b2;
  font-weight: 600;
} /* cyan-600 — cluster(), database() */
.kql-kw {
  color: #2563eb;
  font-weight: 600;
} /* blue-600 — where, project, summarize */
.kql-str {
  color: #16a34a;
} /* green-600 — string literals */
.kql-op {
  color: #dc2626;
  font-weight: 500;
} /* red-600 — ==, != */
.kql-pipe {
  color: #2563eb;
  font-weight: 700;
} /* blue-600 — | pipe */
.kql-col {
  color: #d97706;
  font-weight: 500;
} /* amber-600 — column names */
.kql-guid {
  color: #7c3aed;
} /* purple-600 — GUIDs */
.kql-comment {
  color: #22c55e;
  font-style: italic;
} /* green-500 — comments */
/* Light theme overrides */
[data-theme='light'] .kql-func {
  color: #0e7490;
}
[data-theme='light'] .kql-kw {
  color: #1d4ed8;
}
[data-theme='light'] .kql-str {
  color: #15803d;
}
[data-theme='light'] .kql-col {
  color: #b45309;
}
[data-theme='light'] .kql-guid {
  color: #6d28d9;
}
[data-theme='light'] .kql-comment {
  color: #16a34a;
}
/* Copy button — floats top-right, shown on hover */
.etm-copy-float {
  position: absolute;
  top: 10px;
  right: 10px;
  background: none;
  border: none;
  color: var(--text2);
  cursor: pointer;
  padding: 0;
  line-height: 1;
  opacity: 0.5;
  transition:
    opacity 0.2s,
    color 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.etm-code-wrap:hover .etm-copy-float {
  opacity: 0.8;
}
.etm-copy-float:hover {
  color: var(--accent);
  opacity: 1;
}
.etm-copy-float.copied {
  color: var(--tcb-green);
  opacity: 1;
}
.etm-copy-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text2);
  font-size: 11px;
  cursor: pointer;
  padding: 2px 8px;
  margin-left: 8px;
  vertical-align: middle;
  transition: all 0.15s;
}
.etm-copy-btn:hover {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--accent);
}
.etm-grid-wrap {
  overflow: auto;
  max-height: 60vh;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-top: 6px;
  scrollbar-width: auto;
  scrollbar-color: rgba(100, 116, 139, 0.4) var(--surface2);
}
.etm-grid-wrap::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
.etm-grid-wrap::-webkit-scrollbar-track {
  background: var(--surface2);
  border-radius: 0 0 var(--radius) 0;
}
.etm-grid-wrap::-webkit-scrollbar-thumb {
  background: rgba(100, 116, 139, 0.4);
  border-radius: 10px;
  border: 2px solid var(--surface2);
}
.etm-grid-wrap::-webkit-scrollbar-thumb:hover {
  background: rgba(100, 116, 139, 0.6);
}
.etm-grid-wrap::-webkit-scrollbar-corner {
  background: var(--surface2);
}
.etm-grid {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  white-space: nowrap;
}
.etm-grid th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--surface2);
  color: var(--text);
  font-weight: 600;
  padding: 8px 10px;
  text-align: left;
  border-bottom: 2px solid var(--border);
}
.etm-grid td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--border);
  color: var(--text2);
}
.etm-grid tbody tr:hover {
  background: rgba(88, 166, 255, 0.12);
}
.etm-grid tbody tr:hover td {
  color: var(--text);
}

/* Sortable column headers */
.etm-th-sortable {
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition:
    background 0.15s,
    color 0.15s;
}
.etm-th-sortable:hover {
  background: var(--surface3);
  color: var(--accent);
}
.etm-th-sorted {
  color: var(--accent);
}
.etm-sort-arrow {
  display: inline-block;
  margin-left: 3px;
  font-size: 10px;
  vertical-align: middle;
  opacity: 0.8;
}

/* ─── Inline cell copy button (ID columns in detail grid) ─────────────── */
.etm-td-copyable {
  position: relative;
  white-space: nowrap;
}
.etm-td-copyable .etm-cell-text {
  margin-right: 2px;
}
.etm-cell-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  padding: 1px 2px;
  color: var(--copy-btn-color, #60a5fa);
  opacity: 0.85;
  border-radius: 3px;
  vertical-align: middle;
  transition:
    opacity 0.15s,
    color 0.15s,
    background 0.15s;
  flex-shrink: 0;
}
.etm-cell-copy:hover {
  opacity: 1 !important;
  color: #fff;
  background: var(--accent);
}
.etm-cell-copy-ok {
  opacity: 1 !important;
  color: var(--tcb-green) !important;
}
[data-theme='light'] .etm-cell-copy {
  color: var(--copy-btn-color, #2563eb);
}
[data-theme='light'] .etm-cell-copy:hover {
  color: #fff;
  background: #2563eb;
}

/* ─── Small Copy button for ServiceTreeId (inline in grids) ───────────── */
.stid-copy {
  background: none;
  border: none;
  color: var(--copy-btn-color, #60a5fa);
  cursor: pointer;
  padding: 1px 2px;
  line-height: 1;
  border-radius: 3px;
  vertical-align: middle;
  opacity: 0.85;
  transition:
    opacity 0.15s,
    color 0.15s,
    background 0.15s;
  flex-shrink: 0;
}
.stid-copy:hover {
  opacity: 1;
  color: #fff;
  background: var(--accent);
}
[data-theme='light'] .stid-copy {
  color: var(--copy-btn-color, #2563eb);
}
[data-theme='light'] .stid-copy:hover {
  color: #fff;
  background: #2563eb;
}

/* ─── Copy button for ServiceTreeId ───────────────────────────────────── */
.copy-btn {
  background: none;
  border: none;
  padding: 0 2px;
  cursor: pointer;
  font-size: 12px;
  line-height: 1;
  opacity: 0.5;
  transition: opacity 0.15s;
  flex-shrink: 0;
}
.copy-btn:hover {
  opacity: 1;
}
.vtable-row:hover .copy-btn {
  opacity: 0.8;
}

/* ─── Tab loading indicator ───────────────────────────────────────────── */
.tab-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 32px 16px;
  color: var(--text2);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.2px;
}
.tab-loading-spinner {
  width: 22px;
  height: 22px;
  border: 2.5px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: tabSpin 0.8s linear infinite;
}
@keyframes tabSpin {
  to {
    transform: rotate(360deg);
  }
}
.tab-loading.hidden {
  display: none;
}

/* ─── Tab intro (subtitle text above content) ───────────────────────── */
.tab-intro {
  padding: 8px 4px 0;
}
.tab-subtitle {
  font-size: 12px;
  color: var(--text2);
  line-height: 1.5;
  margin: 0 0 10px 0;
}
.tab-subtitle strong {
  color: var(--accent);
  font-weight: 600;
}

/* Centrality calculation explainer */
.centrality-explainer-body {
  font-size: 12px;
  color: var(--text2);
  line-height: 1.6;
}
.centrality-explainer-body p {
  margin: 0 0 6px;
}
.centrality-explainer-body strong {
  color: var(--text);
}

/* ─── Centrality Concept Diagram ─────────────────────────────────── */
.centrality-concept {
  margin-top: 8px;
  border: 1px solid var(--border);
  border-radius: 3px;
}
.centrality-concept summary {
  cursor: pointer;
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  user-select: none;
  display: flex;
  align-items: center;
  gap: 6px;
  border-radius: 3px;
  transition: background 0.15s;
}
.centrality-concept summary::marker,
.centrality-concept summary::-webkit-details-marker {
  display: none;
}
.centrality-concept summary::before {
  content: '▶';
  font-size: 10px;
  transition: transform 0.2s;
}
.centrality-concept[open] summary::before {
  transform: rotate(90deg);
}
.centrality-concept summary:hover {
  background: var(--hover-overlay);
}
.centrality-concept-body {
  padding: 8px 14px 14px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text2);
  line-height: 1.5;
}
.centrality-concept-body p {
  margin: 0 0 10px;
}
.centrality-scenarios {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.scenario-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 12px 14px;
}
.scenario-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--accent);
  margin-bottom: 8px;
}
.scenario-svg {
  width: 100%;
  max-width: 560px;
  height: auto;
  display: block;
  margin: 0 auto 8px;
}
.scenario-desc {
  font-size: 11px;
  color: var(--text2);
  margin: 0;
  line-height: 1.5;
}
.scenario-desc strong {
  color: var(--text);
}
/* SVG theme-aware node styles */
.node-nontcb {
  fill: var(--accent-bg, rgba(88, 166, 255, 0.15));
  stroke: var(--accent);
  stroke-width: 2;
}
.node-tcb {
  fill: var(--tcb-green-bg, rgba(74, 222, 128, 0.15));
  stroke: var(--tcb-green);
  stroke-width: 2;
}
.node-small {
  fill: var(--accent-bg, rgba(88, 166, 255, 0.12));
  stroke: var(--accent);
  stroke-width: 1.5;
}
.node-text {
  text-anchor: middle;
  dominant-baseline: central;
  font-size: 12px;
  fill: var(--accent);
  font-weight: 600;
}
.node-text-tcb {
  text-anchor: middle;
  dominant-baseline: central;
  font-size: 12px;
  fill: var(--tcb-green);
  font-weight: 600;
}
.node-sub {
  text-anchor: middle;
  font-size: 9px;
  fill: var(--text2);
}
.node-sub-tcb {
  text-anchor: middle;
  font-size: 9px;
  fill: var(--tcb-green);
}
.node-small-text {
  text-anchor: middle;
  dominant-baseline: central;
  font-size: 9px;
  fill: var(--accent);
  font-weight: 500;
}
.edge-muted {
  stroke: var(--text);
  stroke-width: 2;
  opacity: 0.8;
  stroke-dasharray: 6 3;
}
.edge-active {
  stroke: var(--warning);
  stroke-width: 2;
}
.edge-hot {
  stroke: #f85149;
  stroke-width: 2;
}
.edge-light {
  stroke: var(--warning);
  stroke-width: 1.5;
  opacity: 0.6;
}
.arrow-fill-muted {
  fill: var(--text);
  opacity: 0.85;
}
.arrow-fill {
  fill: var(--warning);
}
.arrow-fill-hot {
  fill: #f85149;
}
.score-bg {
  fill: var(--surface);
  stroke: var(--border);
  stroke-width: 1;
}
.score-bg-hot {
  fill: rgba(248, 81, 73, 0.12);
  stroke: #f85149;
  stroke-width: 1;
}
.score-text {
  text-anchor: middle;
  dominant-baseline: central;
  font-size: 10px;
  fill: var(--text);
  font-weight: 600;
}
.score-text-hot {
  text-anchor: middle;
  dominant-baseline: central;
  font-size: 10px;
  fill: #f85149;
  font-weight: 700;
}

.centrality-formula {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 16px;
  font-size: 15px;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.centrality-formula sub {
  font-size: 0.7em;
  font-weight: 400;
  color: var(--accent);
  vertical-align: baseline;
}
.formula-frac {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  vertical-align: middle;
  text-align: center;
  padding: 0 4px;
}
.formula-num {
  border-bottom: 2px solid var(--text2);
  padding: 0 8px 4px;
  font-size: 14px;
  white-space: nowrap;
}
.formula-den {
  padding: 4px 8px 0;
  font-size: 14px;
  white-space: nowrap;
}

/* ─── Edge Browser-style Tabs ──────────────────────────────────────────── */
.overview-tabs-container {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}
.overview-tab-strip {
  display: flex;
  align-items: stretch;
  gap: 2px;
  padding: 8px 8px 0 8px;
  position: relative;
  z-index: 1;
  background: var(--surface2);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  border-bottom: 1px solid var(--border);
}
.overview-tab {
  position: relative;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text2);
  cursor: pointer;
  white-space: nowrap;
  transition:
    background 0.2s,
    color 0.2s,
    border-color 0.2s,
    box-shadow 0.2s;
  min-width: 100px;
  text-align: center;
  user-select: none;
  margin-bottom: -1px;
  letter-spacing: -0.1px;
}
.overview-tab:hover {
  color: var(--text);
  background: var(--hover-overlay);
}
.overview-tab.active {
  color: var(--accent);
  background: var(--surface);
  border-bottom-color: var(--accent);
  font-weight: 700;
  box-shadow: 0 -2px 8px var(--glow-accent);
}
.overview-tab-panel {
  display: none;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  background: var(--surface);
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 16px;
  gap: 16px;
}
.overview-tab-panel.active {
  display: flex;
}

/* ─── Summary sections (Power BI-style, collapsible) ────────────── */
details.summary-section {
  margin-bottom: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
details.summary-section[open] {
  border-color: var(--border-strong);
}
.summary-section {
  margin-bottom: 8px;
}
.summary-section-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
summary.summary-toggle {
  cursor: pointer;
  padding: 8px 12px;
  list-style: none;
  user-select: none;
  border-radius: var(--radius);
  transition: background 0.15s;
}
summary.summary-toggle:hover {
  background: var(--hover-overlay);
}
summary.summary-toggle::marker,
summary.summary-toggle::-webkit-details-marker {
  display: none;
}
summary.summary-toggle .summary-section-title::after {
  content: '▶';
  font-size: 9px;
  margin-left: 8px;
  display: inline-block;
  transition: transform 0.2s;
  color: var(--text2);
}
details.summary-section[open] > summary.summary-toggle .summary-section-title::after {
  transform: rotate(90deg);
}
.summary-section-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  position: relative;
  padding-left: 10px;
}
.summary-section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 2px;
  bottom: 2px;
  width: 3px;
  border-radius: 2px;
  background: var(--accent);
}
.summary-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  padding: 10px 14px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-top: 6px;
}
.legend-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text2);
  line-height: 1.6;
  min-width: 220px;
}
.legend-row strong {
  color: var(--text);
  font-weight: 600;
}
.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--border);
}
.legend-dot.blue {
  background: #58a6ff;
}
.legend-dot.purple {
  background: #a78bfa;
}
.legend-dot.green {
  background: var(--tcb-green);
}
.legend-dot.amber {
  background: #f59e0b;
}
.legend-dot.cyan {
  background: #22d3ee;
}
.legend-dot.pink {
  background: #f472b6;
}
.legend-dot.red {
  background: var(--danger);
}

/* ─── Key Insights cards ───────────────────────────────────────────── */
.insight-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
  margin-bottom: 10px;
}
.insight-card {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.insight-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}
.insight-body {
  flex: 1;
  min-width: 0;
}
.insight-value {
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  line-height: 1.1;
  margin-bottom: 2px;
  font-variant-numeric: tabular-nums;
}
.insight-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--accent);
  margin-bottom: 4px;
}
.insight-desc {
  font-size: 11px;
  color: var(--text2);
  line-height: 1.45;
}
.insight-section {
  margin-top: 2px;
}
.insight-subtitle {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}
.insight-top5-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.insight-top5-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
  cursor: pointer;
  transition:
    border-color 0.15s,
    background 0.15s;
}
.insight-top5-row:hover {
  border-color: var(--accent);
  background: var(--surface);
}
.insight-top5-rank {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-bg, rgba(88, 166, 255, 0.12));
  color: var(--accent);
  font-weight: 800;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.insight-top5-name {
  flex: 1;
  min-width: 0;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.insight-top5-score {
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.insight-top5-meta {
  font-size: 11px;
  color: var(--text2);
  white-space: nowrap;
}

.dist-section {
  margin-bottom: 24px;
}
.dist-section h2 {
  font-size: 16px;
  margin-bottom: 12px;
}
.dist-bars {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: flex-end;
}
.dist-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: default;
  min-width: 72px;
  padding: 8px 6px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition:
    background 0.2s,
    transform 0.15s;
}
.dist-bar:hover {
  background: var(--surface2);
  transform: translateY(-2px);
}
.dist-bar .bar-fill {
  width: 36px;
  background: linear-gradient(180deg, var(--accent), color-mix(in srgb, var(--accent) 70%, var(--bg)));
  border-radius: 6px 6px 2px 2px;
  min-height: 4px;
  transition: height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.dist-bar .bar-count {
  font-size: 14px;
  font-weight: 700;
  margin-top: 6px;
}
.dist-bar .bar-label {
  font-size: 10px;
  color: var(--text2);
  margin-top: 2px;
  font-weight: 500;
}
.dist-bar.unreachable .bar-fill {
  background: linear-gradient(180deg, var(--danger), color-mix(in srgb, var(--danger) 70%, var(--bg)));
}
.dist-bar.tcb .bar-fill {
  background: linear-gradient(180deg, var(--tcb-green), color-mix(in srgb, var(--tcb-green) 70%, var(--bg)));
}

/* Filters */
.filters-row {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 0;
  padding: 10px 14px 10px 2px;
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface2) 100%);
}
.filters-row input[type='text'],
.filters-row select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 4px;
  font-size: 12px;
  outline: none;
  transition:
    border-color 0.15s,
    background 0.15s;
}
.filters-row input[type='text']:hover,
.filters-row select:hover {
  border-color: var(--accent);
}
.filters-row input[type='text']:focus,
.filters-row select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
.filters-row input[type='text'] {
  width: 180px;
  flex-shrink: 1;
  min-width: 120px;
  padding-left: 30px;
}
.filters-row label {
  font-size: 12px;
  color: var(--text2);
  display: flex;
  align-items: center;
  gap: 4px;
}
.filters-row select {
  min-width: 80px;
  max-width: 200px;
  flex-shrink: 1;
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  padding-right: 26px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2394a3b8' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}
/* Search icon */
.filter-search-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.filter-search-wrap::before {
  content: '\1F50D';
  position: absolute;
  left: 9px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  opacity: 0.45;
  pointer-events: none;
}
/* Filter group label */
.filter-group {
  display: flex;
  align-items: center;
  gap: 4px;
}
.filter-group-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text2);
  opacity: 0.6;
  white-space: nowrap;
}
.filter-separator {
  width: 1px;
  height: 24px;
  background: var(--border-strong);
  margin: 0 4px;
}
.btn-small {
  background: var(--surface2);
  color: var(--text2);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  transition:
    border-color 0.15s,
    background 0.15s,
    color 0.15s;
}
.viz-header .btn-small {
  padding: 0;
  min-width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  font-size: 16px;
}
.btn-small:hover {
  background: var(--accent);
  color: var(--btn-active-text);
  border-color: var(--accent);
}
.btn-small.primary {
  background: var(--accent);
  color: var(--btn-active-text);
  border-color: var(--accent);
}

/* Virtualized table */
.vtable-container {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 200px;
  box-shadow: 0 1px 3px var(--shadow);
}
.vtable-header {
  display: grid;
  grid-template-columns: 1.8fr 1.2fr 0.7fr 0.7fr 0.8fr 0.5fr 0.5fr;
  background: var(--surface2);
  border-bottom: 1px solid var(--border-strong);
  font-size: 11px;
  font-weight: 600;
  color: var(--text2);
  letter-spacing: 0.2px;
  position: sticky;
  top: 0;
  z-index: 2;
}
.vtable-header > div {
  padding: 7px 10px;
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 3px;
  transition: color 0.15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.vtable-header > div:hover {
  color: var(--accent);
}
.vtable-header > div .sort-arrow {
  font-size: 10px;
  margin-left: 2px;
  color: var(--text2);
  transition: color 0.15s;
}
.vtable-header > div .sort-arrow.active {
  color: var(--accent);
}
.pe-table-header > div .sort-arrow {
  font-size: 10px;
  margin-left: 2px;
  color: var(--text2);
  transition: color 0.15s;
}
.pe-table-header > div .sort-arrow.active {
  color: var(--accent);
}

/* ─── Column Resize Handles ────────────────────────────────────────── */
.col-resize-handle {
  position: absolute;
  top: 0;
  right: -3px;
  width: 6px;
  height: 100%;
  cursor: col-resize;
  z-index: 2;
  background: transparent;
  transition: background 0.15s;
}
.col-resize-handle:hover,
.col-resize-handle:active {
  background: var(--accent);
  opacity: 0.5;
}
.col-resize-handle-table {
  right: -3px;
}
.vtable-viewport {
  overflow-y: auto;
  position: relative;
  flex: 1;
  min-height: 0;
}
.vtable-row {
  display: grid;
  grid-template-columns: 1.8fr 1.2fr 0.7fr 0.7fr 0.8fr 0.5fr 0.5fr;
  position: absolute;
  left: 0;
  right: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  transition: background 0.1s;
  cursor: pointer;
}
[data-theme='light'] .vtable-row {
  border-top-color: #d6d6d6;
}
[data-theme='light'] .hub-list-item {
  border-top-color: #d6d6d6;
}
.vtable-row:nth-child(odd) {
  background: transparent;
}
.vtable-row:nth-child(even),
.vtable-row.row-even {
  background: transparent;
}
.vtable-row:hover {
  background: var(--hover-overlay);
  box-shadow: inset 3px 0 0 var(--accent);
}
.vtable-row > div {
  padding: 5px 10px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: flex;
  align-items: center;
}
.vtable-row .badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}
.badge-tcb {
  background: linear-gradient(135deg, rgba(74, 222, 128, 0.15), rgba(74, 222, 128, 0.08));
  color: var(--tcb-green);
  border: 1px solid rgba(74, 222, 128, 0.2);
}
.badge-nontcb {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.15), rgba(251, 191, 36, 0.08));
  color: var(--warning);
  border: 1px solid rgba(251, 191, 36, 0.2);
}
.badge-noimpact {
  background: linear-gradient(135deg, rgba(139, 148, 158, 0.12), rgba(139, 148, 158, 0.06));
  color: var(--text2);
  border: 1px solid rgba(139, 148, 158, 0.2);
}
.badge-reachable {
  background: linear-gradient(135deg, rgba(96, 165, 250, 0.15), rgba(96, 165, 250, 0.08));
  color: var(--accent);
  border: 1px solid rgba(96, 165, 250, 0.2);
}
.badge-unreachable {
  background: linear-gradient(135deg, rgba(139, 148, 158, 0.12), rgba(139, 148, 158, 0.06));
  color: var(--text2);
  border: 1px solid rgba(139, 148, 158, 0.2);
}

/* ─── High Fan-Out Row Highlight (6000+ outgoing edge sets) ──── */
.many-out-row {
  border-left: 3px solid #ef4444 !important;
  color: #ef4444 !important;
}
.many-out-row:hover {
  background: var(--hover-overlay) !important;
}

/* ─── Hop Distance Badges ──────────────────────────────────────── */
.hop-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3px;
  min-width: 24px;
  text-align: center;
}
.hop-badge.hop-1 {
  background: rgba(96, 165, 250, 0.15);
  color: var(--accent);
  border: 1px solid rgba(96, 165, 250, 0.25);
}
.hop-badge.hop-2 {
  background: rgba(34, 211, 238, 0.12);
  color: #22d3ee;
  border: 1px solid rgba(34, 211, 238, 0.25);
}
.hop-badge.hop-3 {
  background: rgba(168, 85, 247, 0.12);
  color: #a855f7;
  border: 1px solid rgba(168, 85, 247, 0.25);
}
.hop-badge.hop-4 {
  background: rgba(251, 191, 36, 0.12);
  color: var(--warning);
  border: 1px solid rgba(251, 191, 36, 0.25);
}
.hop-badge.hop-5plus {
  background: rgba(74, 222, 128, 0.12);
  color: var(--tcb-green);
  border: 1px solid rgba(74, 222, 128, 0.25);
}
.hop-badge.hop-unreachable {
  background: rgba(139, 148, 158, 0.1);
  color: var(--text2);
  border: 1px solid rgba(139, 148, 158, 0.2);
}
.vtable-footer {
  padding: 10px 14px;
  font-size: 11px;
  color: var(--text2);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-weight: 500;
  letter-spacing: 0.2px;
}

/* Path Explorer */
#path-explorer {
  display: none;
}
#path-explorer.visible {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.path-header {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 10px 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.path-header h2 {
  font-size: 16px;
  margin: 0;
  white-space: nowrap;
}
.path-header .badges {
  display: flex;
  gap: 6px;
  flex-wrap: nowrap;
}
.path-header .badge-lg {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.path-header .meta {
  font-size: 12px;
  color: var(--text2);
  white-space: nowrap;
}
.path-header .service-description {
  width: 100%;
  font-size: 12.5px;
  color: var(--text2);
  line-height: 1.5;
  margin: -2px 0 0 0;
  font-style: italic;
}

.tabs-bar {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 6px 6px 0 6px;
  margin-bottom: 0;
  position: relative;
  z-index: 1;
  background: var(--surface2);
  border-radius: var(--radius) var(--radius) 0 0;
  border: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.tabs-bar .tab-btn {
  position: relative;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 10px 22px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text2);
  cursor: pointer;
  white-space: nowrap;
  transition:
    background 0.15s,
    color 0.15s,
    border-color 0.15s,
    box-shadow 0.15s;
  min-width: 100px;
  text-align: center;
  user-select: none;
  margin-bottom: -1px;
}
.tabs-bar .tab-btn:hover {
  color: var(--text);
  background: var(--hover-overlay);
}
.tabs-bar .tab-btn.active {
  color: var(--accent);
  background: var(--surface);
  border-bottom-color: var(--accent);
  font-weight: 700;
  box-shadow: 0 -1px 4px var(--shadow);
}
.tabs-bar .nav-btn {
  padding: 6px 14px;
  font-size: 12px;
  margin-top: 2px;
  margin-bottom: 3px;
  border-radius: var(--radius);
}
.explorer-tab-content {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 12px;
}

/* DAG layers — (legacy classes removed, using hub-list / vtable-row now) */

/* Canvas node tooltip (inbound path hover) */
.canvas-tooltip {
  position: fixed;
  background: var(--tooltip-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: 6px;
  padding: 0;
  font-size: 12px;
  z-index: 1001;
  pointer-events: none;
  display: none;
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(96, 165, 250, 0.06);
  max-width: 380px;
  max-height: 70vh;
  overflow-y: auto;
}
.canvas-tooltip.visible {
  display: block;
}
.canvas-tooltip .ct-edge-block {
  padding: 8px 12px;
  border-bottom: 1px solid rgba(96, 165, 250, 0.08);
}
.canvas-tooltip .ct-edge-block:last-child {
  border-bottom: none;
}
.canvas-tooltip .ct-route {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
}
.canvas-tooltip .ct-from {
  color: var(--accent);
}
.canvas-tooltip .ct-arrow {
  color: var(--text2);
  margin: 0 4px;
}
.canvas-tooltip .ct-to {
  color: #34d399;
}
.canvas-tooltip .ct-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
}
.canvas-tooltip .ct-type {
  color: #60a5fa;
  font-size: 10px;
  padding: 1px 5px;
  background: rgba(96, 165, 250, 0.12);
  border-radius: 3px;
}
.canvas-tooltip .ct-type.ct-rbac {
  color: #f59e0b;
  background: rgba(245, 158, 11, 0.12);
}
.canvas-tooltip .ct-count {
  color: var(--text2);
  font-size: 10px;
}
.canvas-tooltip .ct-details {
  margin-top: 4px;
}
.canvas-tooltip .ct-detail {
  font-size: 10px;
  color: var(--text2);
  padding-left: 8px;
  border-left: 2px solid rgba(96, 165, 250, 0.15);
  margin: 2px 0;
}
.canvas-tooltip .ct-more {
  font-size: 10px;
  color: var(--text2);
  font-style: italic;
  margin-top: 2px;
}

/* Edge tooltip */
.edge-tooltip {
  position: fixed;
  background: var(--tooltip-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 12px;
  z-index: 999;
  pointer-events: none;
  display: none;
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(96, 165, 250, 0.06);
  max-width: 350px;
  max-height: 80vh;
  overflow-y: auto;
  word-wrap: break-word;
}
.edge-tooltip.visible {
  display: block;
  pointer-events: auto;
}
.edge-tooltip .tooltip-close {
  position: absolute;
  top: 4px;
  right: 6px;
  cursor: pointer;
  color: var(--text2);
  font-size: 16px;
  line-height: 1;
  background: none;
  border: none;
  padding: 2px 4px;
  z-index: 1;
}
.edge-tooltip .tooltip-close:hover {
  color: var(--danger);
}

/* Tooltip header bar */
.tooltip-header {
  background: var(--tooltip-header-bg);
  margin: -10px -14px 8px -14px;
  padding: 10px 14px;
  border-radius: 6px 6px 0 0;
  border-bottom: 1px solid var(--glass-border);
}
.tooltip-header .tooltip-title {
  font-weight: 700;
  font-size: 13px;
  color: var(--accent);
  letter-spacing: -0.2px;
}

/* Tooltip sections for combined edge details */
.tooltip-section {
  margin: 8px 0;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(96, 165, 250, 0.1);
}
.tooltip-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
}
.tooltip-section-title {
  font-weight: 600;
  color: var(--accent2);
  font-size: 11px;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.tooltip-edge-item {
  font-size: 12px;
  margin: 2px 0;
  padding-left: 8px;
}
.tooltip-edge-detail {
  font-size: 12px;
  margin: 3px 0;
  padding-left: 8px;
  line-height: 1.4;
}
.tooltip-header .tooltip-subtitle {
  color: var(--text2);
  font-size: 11px;
  margin-top: 2px;
}

/* Expand/collapse button for truncated edge lists */
.tooltip-expand-btn {
  color: var(--accent);
  cursor: pointer;
  margin-top: 6px;
  padding: 4px 0;
  font-size: 11px;
  font-weight: 600;
  user-select: none;
  border-top: 1px dashed var(--border);
}
.tooltip-expand-btn:hover {
  text-decoration: underline;
}
.tooltip-expand-btn.active {
  color: var(--text2);
}

/* Hidden by default; show when expanded with scroll */
.tooltip-expanded-edges {
  display: none;
  max-height: 300px;
  overflow-y: auto;
  border-top: 1px solid var(--border);
  margin-top: 2px;
  scrollbar-width: thin;
  scrollbar-color: var(--accent) transparent;
}
.tooltip-expanded-edges.expanded {
  display: block;
}
.tooltip-expanded-edges::-webkit-scrollbar {
  width: 6px;
}
.tooltip-expanded-edges::-webkit-scrollbar-track {
  background: transparent;
}
.tooltip-expanded-edges::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 3px;
}
.tooltip-expanded-edges::-webkit-scrollbar-thumb:hover {
  background: #79c0ff;
}

/* Weight tooltip */
.weight-tooltip {
  position: fixed;
  background: var(--tooltip-bg);
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 12px;
  z-index: 1000;
  pointer-events: none;
  display: none;
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(245, 158, 11, 0.08);
  max-width: 320px;
  min-width: 160px;
}
.weight-tooltip.visible {
  display: block;
}
.weight-tooltip .wt-title {
  font-weight: 700;
  font-size: 13px;
  margin: -10px -14px 8px -14px;
  padding: 8px 14px;
  color: var(--accent);
  background: var(--tooltip-header-bg);
  border-radius: 6px 6px 0 0;
  border-bottom: 1px solid rgba(245, 158, 11, 0.15);
}
.weight-tooltip .wt-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2px 0;
  font-size: 12px;
}
.weight-tooltip .wt-label {
  color: var(--text2);
}
.weight-tooltip .wt-value {
  font-weight: 700;
  color: var(--text1);
  margin-left: 12px;
}
.weight-tooltip .wt-value.rbac {
  color: #f59e0b;
}
.weight-tooltip .wt-value.subs {
  color: #f59e0b;
}

/* Edge Column tooltip — shown on Edge pill hover */
.edge-column-tooltip {
  position: fixed;
  background: var(--tooltip-bg);
  border: 1px solid rgba(88, 166, 255, 0.35);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 12px;
  z-index: 1001;
  pointer-events: none;
  display: none;
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(88, 166, 255, 0.08);
  max-width: 380px;
  min-width: 180px;
}
.edge-column-tooltip.visible {
  display: block;
}
.edge-column-tooltip .ect-title {
  font-weight: 700;
  font-size: 13px;
  margin: -10px -14px 8px -14px;
  padding: 8px 14px;
  color: var(--accent);
  background: var(--tooltip-header-bg);
  border-radius: 6px 6px 0 0;
  border-bottom: 1px solid rgba(88, 166, 255, 0.15);
}
.edge-column-tooltip .ect-row {
  display: flex;
  align-items: center;
  padding: 3px 0;
  font-size: 12px;
}
.edge-column-tooltip .ect-arrow {
  color: var(--accent);
  margin: 0 6px;
}
.edge-column-tooltip .ect-source {
  color: #fff;
}
.edge-column-tooltip .ect-type {
  font-weight: 700;
  color: #fff;
}

/* Edge Detail tooltip — shown on EdgeDetails pill hover */
.edge-detail-tooltip {
  position: fixed;
  background: var(--tooltip-bg);
  border: 1px solid rgba(88, 166, 255, 0.35);
  border-radius: 6px;
  padding: 0;
  font-size: 12px;
  z-index: -1;
  pointer-events: none;
  display: none;
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(88, 166, 255, 0.08);
  max-width: 600px;
  min-width: 280px;
  max-height: 400px;
  overflow-y: auto;
}
.edge-detail-tooltip.visible {
  display: block;
  z-index: 1001;
  pointer-events: auto;
}
.edge-detail-tooltip .edt-title {
  font-weight: 700;
  font-size: 13px;
  margin: 0;
  padding: 8px 14px;
  color: var(--accent);
  background: var(--tooltip-header-bg);
  border-radius: 6px 6px 0 0;
  border-bottom: 1px solid rgba(88, 166, 255, 0.15);
}
.edge-detail-tooltip .edt-subtitle {
  font-weight: 600;
  font-size: 11px;
  color: var(--text2);
  padding: 4px 14px;
  border-bottom: 1px solid rgba(88, 166, 255, 0.1);
  background: rgba(88, 166, 255, 0.05);
}
.edge-detail-tooltip .edt-sources-container {
  max-height: 300px;
  overflow-y: auto;
  overflow-x: hidden;
}
.edge-detail-tooltip .edt-source-item {
  border-bottom: 1px solid rgba(88, 166, 255, 0.1);
  padding: 10px 14px;
}
.edge-detail-tooltip .edt-source-item:last-child {
  border-bottom: none;
}
.edge-detail-tooltip .edt-source-header {
  display: flex;
  align-items: center;
  margin-bottom: 6px;
  font-weight: 600;
}
.edge-detail-tooltip .edt-source-name {
  color: var(--accent);
  font-weight: 700;
  max-width: 200px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.edge-detail-tooltip .edt-arrow {
  margin: 0 8px;
  color: var(--text2);
  font-size: 12px;
}
.edge-detail-tooltip .edt-target {
  color: var(--text);
  font-weight: 600;
}
.edge-detail-tooltip .edt-source-details {
  padding-left: 8px;
  border-left: 2px solid rgba(88, 166, 255, 0.2);
}
.edge-detail-tooltip .edt-edge-type {
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
  padding: 2px 6px;
  background: rgba(88, 166, 255, 0.2);
  border-radius: 3px;
  display: inline-block;
  font-size: 10px;
}
.edge-detail-tooltip .edt-detail-row {
  display: flex;
  align-items: center;
  padding: 1px 0;
  font-size: 10px;
}
.edge-detail-tooltip .edt-detail-label {
  color: var(--text2);
  margin-right: 6px;
  min-width: 80px;
}
.edge-detail-tooltip .edt-detail-value {
  font-weight: 700;
  color: #fff;
}
.edge-detail-tooltip .edt-detail-value.subs {
  color: #f59e0b;
}
.edge-detail-tooltip .edt-empty {
  color: var(--text2);
  font-style: italic;
  padding: 14px;
  text-align: center;
}

/* Hub mode */
.hub-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.hub-bucket {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.hub-bucket:last-child {
  border-bottom: none;
}
.hub-bucket .bucket-bar {
  height: 24px;
  background: var(--accent);
  border-radius: 6px;
  min-width: 4px;
  transition: width 0.3s;
}
.hub-bucket .bucket-label {
  font-size: 13px;
  min-width: 100px;
}
.hub-bucket .bucket-count {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  min-width: 50px;
  text-align: right;
}

.hub-search {
  margin-top: 12px;
  margin-bottom: 12px;
}
.hub-search input {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 5px 10px;
  border-radius: 3px;
  font-size: 12px;
  width: 100%;
  max-width: 400px;
  outline: none;
  transition: border-color 0.15s;
}
.hub-search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.hub-list {
  /* no max-height — .split-left handles scrolling */
}
.hub-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 12px;
  cursor: pointer;
  transition: background 0.1s;
}
.hub-list-item:hover {
  background: rgba(88, 166, 255, 0.2);
}

/* Path Explorer grid tables */
.pe-table {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  overflow: hidden;
  box-shadow: 0 1px 3px var(--shadow);
}
.pe-table-header {
  display: grid;
  background: var(--surface2);
  border-bottom: 1px solid var(--border-strong);
  font-size: 11px;
  font-weight: 600;
  color: var(--text2);
  letter-spacing: 0.2px;
  position: sticky;
  top: 0;
  z-index: 2;
}
.pe-table-header > div {
  padding: 7px 10px;
  min-width: 0;
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: center;
  gap: 3px;
  transition: color 0.15s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.pe-table-header > div:hover {
  color: var(--accent);
}
.pe-table-row {
  display: grid;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.1s;
}
[data-theme='light'] .pe-table-row {
  border-top-color: #d6d6d6;
}
.pe-table-row:nth-child(odd) {
  background: transparent;
}
.pe-table-row:nth-child(even) {
  background: transparent;
}
.pe-table-row:hover {
  background: var(--hover-overlay);
  box-shadow: inset 3px 0 0 var(--accent);
}
.pe-table-row > div {
  padding: 6px 10px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}
.pe-table-row .badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}
.pe-table-group-header {
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 600;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  color: var(--accent);
  cursor: pointer;
  user-select: none;
}
.pe-table-group-header:hover {
  background: rgba(88, 166, 255, 0.08);
}
.pe-table-group-header .chevron {
  display: inline-block;
  transition: transform 0.2s;
  margin-right: 4px;
}
.pe-table-group-header .chevron.collapsed {
  transform: rotate(-90deg);
}
.pe-table-group.collapsed {
  display: none;
}
.dist-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 700;
  min-width: 24px;
  text-align: center;
  background: rgba(88, 166, 255, 0.15);
  color: var(--accent);
  margin-left: 4px;
}
.dist-badge.tcb {
  background: rgba(63, 185, 80, 0.15);
  color: var(--tcb-green);
}
.dist-badge.danger {
  background: rgba(248, 81, 73, 0.15);
  color: var(--danger);
}

/* Weight pills in DAG grid */
.weight-pill {
  display: inline-block;
  padding: 1px 5px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 600;
  white-space: nowrap;
  background: rgba(139, 148, 158, 0.15);
  color: var(--text2);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}
.weight-pill.rbac {
  background: rgba(245, 158, 11, 0.2);
  color: var(--warning);
}
.weight-pill.subs {
  background: rgba(245, 158, 11, 0.3);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.4);
}

/* Unreachable message */
.unreachable-msg {
  background: rgba(74, 222, 128, 0.08);
  border: 1px solid rgba(74, 222, 128, 0.25);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}
.unreachable-msg h3 {
  color: var(--tcb-green);
  margin-bottom: 8px;
}
.unreachable-msg p {
  color: var(--text2);
  font-size: 13px;
}

/* Split pane layout for Path Explorer */
.split-pane {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
.split-left {
  flex: 1;
  min-width: 0;
  min-height: 0;
  overflow-y: auto;
  padding: 0 8px 0 0;
}
.split-divider {
  width: 6px;
  cursor: col-resize;
  background: var(--border);
  flex-shrink: 0;
  transition: background 0.2s;
  position: relative;
  z-index: 10;
}
.split-divider::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: -4px;
  right: -4px;
  cursor: col-resize;
}
.split-divider:hover,
.split-divider.dragging {
  background: var(--accent);
}
.split-divider::after {
  content: '⋮';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--text2);
  font-size: 12px;
  pointer-events: none;
}
.split-right {
  flex: 1;
  min-width: 0;
  background: rgba(255, 248, 220, 0.12);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.viz-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
  flex-shrink: 0;
}
.viz-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text2);
}
#graph-canvas {
  flex: 1;
  width: 100%;
  cursor: grab;
  background: var(--bg);
}
#graph-canvas:active {
  cursor: grabbing;
}

/* Responsive */
@media (max-width: 768px) {
  .vtable-header,
  .vtable-row {
    grid-template-columns: 2.5fr 1.5fr 1fr 1fr 0.7fr 0.6fr;
  }
  .tiles {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }
  .overview-hero {
    flex-direction: column;
    gap: 12px;
  }
  .split-pane {
    flex-direction: column;
    height: auto;
  }
  .split-divider {
    display: none;
  }
  .split-right {
    flex: none;
    max-width: 100%;
    height: 350px;
  }
  .explanation-grid {
    grid-template-columns: 1fr;
  }
  .summary-legend {
    flex-direction: column;
    gap: 4px;
  }
  .burndown-split {
    flex-direction: column;
  }
  .burndown-split-left {
    flex: 0 0 auto;
    max-width: 100%;
  }
  .burndown-split-right {
    flex: 0 0 300px;
    width: 100%;
    border-left: none;
    border-top: 1px solid var(--border);
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--surface2);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb {
  background: rgba(100, 116, 139, 0.35);
  border-radius: 10px;
  min-height: 32px;
  min-width: 32px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(100, 116, 139, 0.55);
}
::-webkit-scrollbar-corner {
  background: var(--surface2);
}

/* Selection */
::selection {
  background: rgba(96, 165, 250, 0.3);
  color: var(--text);
}

/* ─── Aggregated Grid Pills ────────────────────────────────────────── */
.agg-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition:
    background 0.15s,
    transform 0.1s;
}
.agg-pill:hover {
  transform: scale(1.05);
}
.agg-pill-link {
  background: rgba(96, 165, 250, 0.12);
  color: var(--accent);
  border: 1px solid rgba(96, 165, 250, 0.2);
}
.agg-pill-link:hover {
  background: rgba(96, 165, 250, 0.25);
}
.agg-pill-tcb {
  background: rgba(74, 222, 128, 0.12);
  color: var(--tcb-green);
  border: 1px solid rgba(74, 222, 128, 0.2);
}
.agg-pill-tcb:hover {
  background: rgba(74, 222, 128, 0.25);
}

/* ─── Explorer Sub-Tabs ───────────────────────────────────────────── */
.explorer-sub-tab-strip {
  display: flex;
  align-items: stretch;
  gap: 2px;
  padding: 0 0 0 0;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--border);
}
.explorer-sub-tab {
  position: relative;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 8px 18px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text2);
  cursor: pointer;
  white-space: nowrap;
  transition:
    background 0.2s,
    color 0.2s,
    border-color 0.2s;
  text-align: center;
  user-select: none;
  margin-bottom: -1px;
}
.explorer-sub-tab:hover {
  color: var(--text);
  background: var(--hover-overlay);
}
.explorer-sub-tab.active {
  color: var(--accent);
  background: var(--hover-overlay);
  border-bottom-color: var(--accent);
  font-weight: 700;
}

/* ─── Segmented Control (path explorer toggles) ───────────────────── */
.seg-control {
  display: inline-flex;
  align-items: center;
  gap: 0;
  background: var(--surface-alt, rgba(255, 255, 255, 0.04));
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2px;
  font-size: 12px;
}
.seg-control__label {
  font-size: 11px;
  color: var(--text2);
  margin-right: 6px;
  font-weight: 500;
  letter-spacing: 0.3px;
  user-select: none;
}
.seg-control__btn {
  position: relative;
  background: transparent;
  border: none;
  border-radius: 6px;
  padding: 4px 14px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text2);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
  user-select: none;
  line-height: 1.4;
}
.seg-control__btn:hover {
  color: var(--text);
  background: var(--hover-overlay);
}
.seg-control__btn.active {
  color: var(--accent);
  background: var(--card);
  box-shadow:
    0 1px 3px var(--shadow),
    0 0 0 1px rgba(96, 165, 250, 0.15);
  font-weight: 600;
}
[data-theme='light'] .seg-control {
  background: rgba(0, 0, 0, 0.03);
}
[data-theme='light'] .seg-control__btn.active {
  background: #fff;
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.1),
    0 0 0 1px rgba(37, 99, 235, 0.12);
}

/* ─── Theme Toggle Button ──────────────────────────────────────────── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  transition:
    background 0.2s,
    transform 0.3s,
    border-color 0.2s;
  margin-right: 8px;
  flex-shrink: 0;
  color: #ffffff;
}
.theme-toggle:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: rotate(20deg) scale(1.08);
}
.theme-toggle:active {
  transform: rotate(20deg) scale(0.95);
}
[data-theme='light'] .theme-toggle {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.25);
}
[data-theme='light'] .theme-toggle:hover {
  background: rgba(255, 255, 255, 0.28);
}
.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
:root .theme-toggle .icon-sun {
  display: none;
}
:root .theme-toggle .icon-moon {
  display: inline-flex;
}
[data-theme='light'] .theme-toggle .icon-sun {
  display: inline-flex;
  color: #f59e0b;
}
[data-theme='light'] .theme-toggle .icon-moon {
  display: none;
}

/* Permanent transitions removed — theme transitions are now only applied
   via the .theme-transitioning class (see top of file) to prevent flickering
   when tabs are switched or content is dynamically rendered. */

/* Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ─── Auto-detect system theme ─────────────────────────────────────── */
/* If no data-theme set and user prefers light, apply light overrides */
@media (prefers-color-scheme: light) {
  html:not([data-theme]) {
    --bg: #f4f6f8;
    --surface: #ffffff;
    --surface2: #f0f2f5;
    --surface3: #e8ecf0;
    --border: rgba(0, 0, 0, 0.06);
    --border-strong: rgba(0, 0, 0, 0.12);
    --text: #1a1a2e;
    --text2: #64748b;
    --accent: #2563eb;
    --accent2: #16a34a;
    --warning: #d97706;
    --danger: #dc2626;
    --tcb-green: #16a34a;
    --tooltip-bg: rgba(255, 255, 255, 0.95);
    --tooltip-header-bg: rgba(244, 246, 248, 0.98);
    --header-gradient: #0078d4;
    --header-border: rgba(0, 100, 180, 0.2);
    --header-shadow: rgba(0, 0, 0, 0.08);
    --btn-active-text: #ffffff;
    --shadow: rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.04);
    --hover-overlay: rgba(37, 99, 235, 0.1);
    --glow-accent: rgba(37, 99, 235, 0.08);
    --glow-green: rgba(22, 163, 74, 0.08);
    --glow-danger: rgba(220, 38, 38, 0.08);
    --glass: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(0, 0, 0, 0.06);
    --canvas-edge: rgba(37, 99, 235, 0.3);
    --canvas-edge-hi: rgba(37, 99, 235, 0.6);
    --card-shade: rgba(0, 0, 0, 0.05);
  }
}

/* ═══════════════════════════════════════════════════════════════════════════
   BLAST RADIUS STYLES
   ═══════════════════════════════════════════════════════════════════════════ */

/* Blast radius overview tab — grid column layout (10 columns) */
.vtable-header.blast-header {
  grid-template-columns: 2fr 1.5fr 1fr 1fr 80px 80px 80px 80px 60px 60px;
}
.vtable-row.blast-row {
  grid-template-columns: 2fr 1.5fr 1fr 1fr 80px 80px 80px 80px 60px 60px;
}

/* Risk score badges */
.blast-risk-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  min-width: 36px;
}
.blast-risk-none {
  background: rgba(139, 148, 158, 0.15);
  color: var(--text2);
}
.blast-risk-low {
  background: rgba(63, 185, 80, 0.2);
  color: var(--tcb-green);
}
.blast-risk-med {
  background: rgba(245, 158, 11, 0.2);
  color: var(--warning);
}
.blast-risk-high {
  background: rgba(248, 81, 73, 0.2);
  color: var(--danger);
}
.blast-risk-crit {
  background: rgba(248, 81, 73, 0.35);
  color: #ff4444;
  font-weight: 800;
}

/* Blast radius distribution bar overrides */
.dist-bar.blast-med .bar-fill {
  background: var(--warning);
}
.dist-bar.blast-high .bar-fill {
  background: var(--danger);
}
.dist-bar.blast-crit .bar-fill {
  background: #ff4444;
}

/* Blast summary cards (path explorer) */
.blast-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}
.blast-card {
  flex: 1;
  min-width: 130px;
  max-width: 200px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 16px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}
.blast-card:hover {
  transform: translateY(-3px);
  box-shadow:
    var(--shadow-lg),
    0 0 20px var(--glow-accent);
  background: var(--surface2);
  border-color: var(--accent);
  cursor: pointer;
}
.blast-card-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.5px;
}
.blast-card-label {
  font-size: 11px;
  color: var(--text2);
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}
.blast-card.blast-card-danger .blast-card-value {
  color: var(--danger);
}
.blast-card.blast-risk-crit-card {
  border-color: rgba(248, 81, 73, 0.4);
  background: rgba(248, 81, 73, 0.06);
}
.blast-card.blast-risk-crit-card .blast-card-value {
  color: #ff4444;
}
.blast-card.blast-risk-high-card {
  border-color: rgba(248, 81, 73, 0.3);
  background: rgba(248, 81, 73, 0.04);
}
.blast-card.blast-risk-high-card .blast-card-value {
  color: var(--danger);
}
.blast-card.blast-risk-med-card {
  border-color: rgba(245, 158, 11, 0.3);
  background: rgba(245, 158, 11, 0.04);
}
.blast-card.blast-risk-med-card .blast-card-value {
  color: var(--warning);
}
.blast-card.blast-risk-low-card {
  border-color: rgba(63, 185, 80, 0.3);
  background: rgba(63, 185, 80, 0.04);
}
.blast-card.blast-risk-low-card .blast-card-value {
  color: var(--tcb-green);
}
.blast-card.blast-risk-none-card .blast-card-value {
  color: var(--text2);
}

/* ═══════════════════════════════════════════════════════════════════════════
   CHOKEPOINT STYLES
   ═══════════════════════════════════════════════════════════════════════════ */

/* Chokepoint overview tab — grid column layout (10 columns) */
.vtable-header.choke-header {
  grid-template-columns: 2fr 1.5fr 1fr 1fr 70px 90px 80px 60px 80px 60px;
}
.vtable-row.choke-row {
  grid-template-columns: 2fr 1.5fr 1fr 1fr 70px 90px 80px 60px 80px 60px;
}

/* Chokepoint score badges */
.choke-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  min-width: 36px;
}
.choke-none {
  background: rgba(139, 148, 158, 0.15);
  color: var(--text2);
}
.choke-low {
  background: rgba(88, 166, 255, 0.15);
  color: var(--accent);
}
.choke-med {
  background: rgba(245, 158, 11, 0.2);
  color: var(--warning);
}
.choke-high {
  background: rgba(248, 81, 73, 0.2);
  color: var(--danger);
}
.choke-crit {
  background: rgba(248, 81, 73, 0.35);
  color: #ff4444;
  font-weight: 800;
}

/* Chokepoint distribution bar overrides */
.dist-bar.choke-med .bar-fill {
  background: var(--warning);
}
.dist-bar.choke-high .bar-fill {
  background: var(--danger);
}
.dist-bar.choke-crit .bar-fill {
  background: #ff4444;
}

/* Chokepoint summary cards — reuse blast-card with orange theme */
.choke-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}
.choke-card {
  flex: 1;
  min-width: 130px;
  max-width: 200px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 16px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}
.choke-card:hover {
  transform: translateY(-3px);
  box-shadow:
    var(--shadow-lg),
    0 0 20px var(--glow-accent);
  background: var(--surface2);
  border-color: var(--accent);
  cursor: pointer;
}
.choke-card-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--warning);
  letter-spacing: -0.5px;
}
.choke-card-label {
  font-size: 11px;
  color: var(--text2);
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}
.choke-card.choke-card-accent .choke-card-value {
  color: var(--accent);
}
.choke-card.choke-card-danger .choke-card-value {
  color: var(--danger);
}
.choke-card.choke-card-green .choke-card-value {
  color: var(--tcb-green);
}

/* ═══════════════════════════════════════════════════════════════════════════
   EDGE BURNDOWN CAMPAIGN STYLES
   ═══════════════════════════════════════════════════════════════════════════ */

/* Burndown hero — slightly different gradient */
.burndown-hero {
  background: rgba(248, 81, 73, 0.06);
}

/* Burndown TCB count pills */
.burndown-pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.95em;
}
.burndown-pill-before {
  background: rgba(248, 81, 73, 0.15);
  color: #f85149;
}
.burndown-pill-after {
  background: rgba(63, 185, 80, 0.15);
  color: #3fb950;
}

/* Burndown split layout */
.burndown-split {
  display: flex;
  flex: 1;
  min-height: 0;
  gap: 0;
}
.burndown-split-left {
  flex: 0 0 42%;
  max-width: 42%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.burndown-split-right {
  flex: 1;
  min-width: 0;
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.burndown-split-right canvas {
  flex: 1;
  width: 100%;
  cursor: grab;
  background: var(--bg);
  display: none;
}
.burndown-split-right canvas:active {
  cursor: grabbing;
}
.burndown-graph-placeholder {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
  color: var(--text2);
  font-size: 12px;
  font-style: italic;
}

/* Burndown grid — 6 columns (ServiceId/Div/Org inline under name) */
.vtable-header.burndown-header {
  grid-template-columns: 34px minmax(160px, 1.5fr) minmax(100px, 0.8fr) minmax(160px, 1.5fr) 70px minmax(120px, 1fr);
}
.vtable-row.burndown-row {
  grid-template-columns: 34px minmax(160px, 1.5fr) minmax(100px, 0.8fr) minmax(160px, 1.5fr) 70px minmax(120px, 1fr);
  cursor: default;
  transition: background 0.15s;
  align-items: start;
  padding: 4px 0;
}
.vtable-row.burndown-row > div {
  white-space: normal;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
  padding: 4px 8px;
  min-width: 0;
  max-height: 60px;
  overflow-y: auto;
}
.vtable-row.burndown-row:hover {
  background: var(--hover-overlay);
  box-shadow: inset 3px 0 0 var(--accent);
}
.vtable-row.burndown-row.selected {
  background: rgba(88, 166, 255, 0.15);
  box-shadow: inset 3px 0 0 var(--accent);
}

/* Burndown grid: ensure horizontal scroll on narrow screens instead of column crush */
#burndown-table-container {
  overflow-x: auto;
}
#burndown-table-container .vtable-header.burndown-header,
#burndown-table-container .vtable-row.burndown-row {
  min-width: 720px;
}

/* ─── TCB-Impacting Services Tab ───────────────────────────────────── */
.tcb-impact-charts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.tcb-impact-chart-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 14px;
}
.tcb-impact-chart-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 10px;
  text-align: center;
}
.tcb-impact-chart-body {
  min-height: 180px;
  display: flex;
  align-items: flex-end;
  gap: 3px;
  padding: 0 4px;
}
.tcb-impact-bar-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.tcb-impact-bar {
  width: 100%;
  border-radius: 2px 2px 0 0;
  min-height: 2px;
  transition: opacity 0.15s;
}
.tcb-impact-bar.gold {
  background: #f5c542;
}
.tcb-impact-bar.purple {
  background: #a855f7;
}
.tcb-impact-bar:hover {
  opacity: 0.8;
}
.tcb-impact-bar-label {
  font-size: 9px;
  color: var(--text);
  font-weight: 700;
  text-align: center;
}
.tcb-impact-bar-axis {
  font-size: 9px;
  color: var(--text2);
  text-align: center;
}
/* TCB-Impacting grid — 6 columns */
.vtable-header.tcbImpacting-header {
  grid-template-columns: 34px 2fr 0.7fr 0.7fr 0.7fr 0.5fr;
}
.vtable-row.tcbImpacting-row {
  grid-template-columns: 34px 2fr 0.7fr 0.7fr 0.7fr 0.5fr;
}
.vtable-row.tcbImpacting-row > div {
  white-space: normal;
  overflow: visible;
  display: block;
  padding: 4px 8px;
}

/* Edge type pill */
.edge-type-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 600;
  background: rgba(88, 166, 255, 0.18);
  color: var(--accent);
  white-space: nowrap;
  letter-spacing: 0.2px;
  border: 1px solid rgba(88, 166, 255, 0.25);
}
.edge-type-pill.clickable {
  cursor: pointer;
  transition:
    background 0.15s,
    box-shadow 0.15s;
}
.edge-type-pill.clickable:hover {
  background: rgba(88, 166, 255, 0.25);
  box-shadow: 0 0 0 1px var(--accent);
}

/* Difficulty badges */
.difficulty-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 600;
  text-transform: capitalize;
  letter-spacing: 0.2px;
}
.difficulty-badge.difficulty-easy {
  background: rgba(74, 222, 128, 0.15);
  color: var(--tcb-green);
  border: 1px solid rgba(74, 222, 128, 0.25);
}
.difficulty-badge.difficulty-medium {
  background: rgba(251, 191, 36, 0.15);
  color: var(--warning);
  border: 1px solid rgba(251, 191, 36, 0.25);
}
.difficulty-badge.difficulty-hard {
  background: rgba(248, 81, 73, 0.15);
  color: var(--danger);
  border: 1px solid rgba(248, 81, 73, 0.25);
}
.difficulty-badge.difficulty-unknown {
  background: rgba(139, 148, 158, 0.1);
  color: var(--text2);
  border: 1px solid rgba(139, 148, 158, 0.2);
}

/* Centrality score badges */
.centrality-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  min-width: 60px;
  font-variant-numeric: tabular-nums;
}
.centrality-none {
  background: rgba(139, 148, 158, 0.15);
  color: var(--text2);
}
.centrality-low {
  background: rgba(88, 166, 255, 0.15);
  color: var(--accent);
}
.centrality-med {
  background: rgba(245, 158, 11, 0.2);
  color: var(--warning);
}
.centrality-high {
  background: rgba(248, 81, 73, 0.2);
  color: var(--danger);
}
.centrality-crit {
  background: rgba(248, 81, 73, 0.35);
  color: #ff4444;
  font-weight: 800;
}

/* ═══════════════════════════════════════════════════════════════════════════
   INTRO TAB
   ═══════════════════════════════════════════════════════════════════════════ */
.intro-page {
  padding: 16px 4px 32px;
  overflow-y: auto;
  max-height: 100%;
}
.intro-hero {
  text-align: center;
  margin-bottom: 24px;
  padding: 0 12px;
}
.intro-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text1);
  margin: 0 0 8px;
}
.intro-lead {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.6;
  max-width: 680px;
  margin: 0 auto;
}
.intro-lead strong {
  color: var(--accent);
}
.intro-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 0 auto;
}
@media (max-width: 1200px) {
  .intro-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 700px) {
  .intro-cards {
    grid-template-columns: 1fr;
  }
}
.intro-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 12px 14px;
  box-shadow:
    0 2px 6px rgba(0, 0, 0, 0.08),
    0 1px 2px rgba(0, 0, 0, 0.06);
  transition:
    border-color 0.15s,
    box-shadow 0.2s,
    transform 0.15s;
}
.intro-card:hover {
  border-color: var(--accent);
  box-shadow:
    0 6px 20px rgba(0, 0, 0, 0.15),
    0 2px 6px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}
/* Card color variants — visible tinted backgrounds for both themes */
.intro-card-blue {
  background: rgba(59, 130, 246, 0.1);
}
.intro-card-indigo {
  background: rgba(99, 102, 241, 0.1);
}
.intro-card-amber {
  background: rgba(245, 158, 11, 0.1);
}
.intro-card-green {
  background: rgba(34, 197, 94, 0.1);
}
.intro-card-red {
  background: rgba(248, 81, 73, 0.1);
}
.intro-card-cyan {
  background: rgba(34, 211, 238, 0.1);
}
.intro-card-pink {
  background: rgba(236, 72, 153, 0.1);
}
.intro-card-teal {
  background: rgba(100, 116, 139, 0.1);
}
.intro-card-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}
.intro-card-body {
  flex: 1;
  min-width: 0;
}
.intro-card-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text1);
  margin: 0 0 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.intro-badge {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 20px;
  background: var(--accent-bg);
  color: var(--accent);
}
.intro-badge.purple {
  background: var(--accent-bg);
  color: var(--accent);
}
.intro-badge.amber {
  background: var(--warning-bg);
  color: var(--warning);
}
.intro-badge.green {
  background: var(--tcb-green-bg);
  color: var(--tcb-green);
}
.intro-badge.red {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error);
}
.intro-badge.cyan {
  background: rgba(34, 211, 238, 0.1);
  color: #22d3ee;
}
.intro-badge.indigo {
  background: rgba(99, 102, 241, 0.1);
  color: #6366f1;
}
.intro-badge.teal {
  background: rgba(100, 116, 139, 0.12);
  color: #94a3b8;
}
.intro-badge.pink {
  background: rgba(236, 72, 153, 0.1);
  color: #ec4899;
}

.intro-card-body p {
  font-size: 11.5px;
  color: var(--text2);
  line-height: 1.5;
  margin: 0 0 6px;
}
.intro-card-body p strong {
  color: var(--text1);
}
.intro-diagram {
  margin: 6px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 6px;
  text-align: center;
}
.intro-svg {
  width: 100%;
  max-width: 360px;
  height: auto;
}
.intro-svg text {
  font-family: var(--font);
}
.intro-hint {
  font-size: 10.5px !important;
  color: var(--text2) !important;
  background: var(--card-shade);
  border-left: 2px solid var(--accent);
  padding: 5px 8px;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 0 !important;
}

/* ─── Edge Info Tab ───────────────────────────────────────────────────── */
.edge-info-page {
  padding: 16px 16px 32px;
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
}
/* Explainer banner */
.edge-info-explainer {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 18px;
  background: var(--accent-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 14px;
}
.edge-info-explainer-icon {
  flex-shrink: 0;
  font-size: 28px;
  line-height: 1;
  margin-top: 2px;
}
.edge-info-explainer-body {
  flex: 1;
  min-width: 0;
}
.edge-info-explainer-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text1);
  margin: 0 0 6px;
}
.edge-info-explainer-body p {
  font-size: 12px;
  color: var(--text2);
  line-height: 1.65;
  margin: 0 0 6px;
}
.edge-info-explainer-body p:last-child {
  margin-bottom: 0;
}
.edge-info-explainer-body strong {
  color: var(--text1);
}
.edge-info-explainer-body em {
  color: var(--accent);
  font-style: normal;
  font-weight: 500;
}
/* Toolbar: search + count */
.edge-info-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.edge-info-toolbar select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 5px 26px 5px 10px;
  border-radius: 3px;
  font-size: 12px;
  outline: none;
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2394a3b8' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  transition: border-color 0.15s;
}
.edge-info-toolbar select:hover {
  border-color: var(--accent);
}
.edge-info-toolbar select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
.edge-info-toolbar .filter-search-wrap {
  flex: 0 0 260px;
}
.edge-info-search {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 5px 10px 5px 30px;
  border-radius: 3px;
  font-size: 12px;
  outline: none;
  transition: border-color 0.15s;
}
.edge-info-search:hover {
  border-color: var(--accent);
}
.edge-info-search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
.edge-info-count {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
}
.edge-info-no-match {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--text2);
  padding: 32px;
  font-size: 12px;
}
.edge-info-loading {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--text2);
  padding: 32px;
  font-size: 12px;
}
/* Scrollable wrapper */
.edge-info-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}
/* TBD badge in edge table */
.edge-prop-tbd {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 8px;
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

/* ─── Fullscreen mode for canvas panel ─────────────────────────────── */
.split-right:fullscreen {
  background: var(--bg);
  border: none;
  border-radius: 0;
}
.split-right:fullscreen #graph-canvas {
  width: 100%;
  height: 100%;
}

/* ─── Loading skeleton (replaces spinner) ──────────────────────────── */
.skeleton-rows {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px 24px;
  width: 100%;
  max-width: 520px;
}
.skeleton-row {
  display: flex;
  gap: 12px;
  align-items: center;
}
.skeleton-bar {
  height: 14px;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--border) 25%, var(--surface2) 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: skeletonShimmer 1.5s ease-in-out infinite;
}
.skeleton-bar.w-short {
  width: 60px;
}
.skeleton-bar.w-med {
  width: 140px;
}
.skeleton-bar.w-long {
  width: 220px;
}
.skeleton-bar.w-full {
  flex: 1;
}
@keyframes skeletonShimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ═══════════════════════════════════════════════════════════════════════
   Header Icon Buttons (Tutorial, Feedback)
   ═══════════════════════════════════════════════════════════════════════ */
.header-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  cursor: pointer;
  color: rgba(255, 255, 255, 0.85);
  transition:
    background 0.15s,
    transform 0.15s,
    border-color 0.15s;
  flex-shrink: 0;
}
.header-icon-btn:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.3);
  transform: scale(1.08);
}
.header-icon-btn:active {
  transform: scale(0.95);
}
/* Bug icon — red tint */
.header-icon-btn.bug-icon {
  color: #ff6b6b;
}
.header-icon-btn.bug-icon:hover {
  color: #ff4444;
  background: rgba(255, 107, 107, 0.15);
  border-color: rgba(255, 107, 107, 0.3);
}
/* Ideas icon — yellow tint */
.header-icon-btn.ideas-icon {
  color: #ffd43b;
}
.header-icon-btn.ideas-icon:hover {
  color: #fcc419;
  background: rgba(255, 212, 59, 0.15);
  border-color: rgba(255, 212, 59, 0.3);
}

/* ─── User Avatar ──────────────────────────────────────────────────── */
.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: rgba(255, 255, 255, 0.85);
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.5px;
  flex-shrink: 0;
  text-transform: uppercase;
  user-select: none;
  cursor: pointer;
  transition:
    background 0.15s,
    transform 0.15s,
    border-color 0.15s;
}
.user-avatar:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.3);
  transform: scale(1.08);
}

/* ─── Feedback / Bug Dropdown ──────────────────────────────────────── */
.header-dropdown {
  position: relative;
}
.header-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  min-width: 150px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  z-index: 2000;
  overflow: hidden;
}
.header-dropdown-menu.visible {
  display: block;
}

/* ─── Profile Menu Divider ─────────────────────────────────────────── */
.profile-menu-divider {
  height: 1px;
  background: var(--border);
  margin: 4px 0;
}
.profile-menu-signout:hover {
  background: rgba(248, 81, 73, 0.12);
  color: #f87171;
}
/* Non-signout items — neutral hover */
.profile-menu-item:not(.profile-menu-signout):hover {
  background: var(--hover-overlay);
  color: var(--text);
}

/* ═══════════════════════════════════════════════════════════════════════
   Tutorial Overlay
   ═══════════════════════════════════════════════════════════════════════ */
.tutorial-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10000;
}
.tutorial-overlay.active {
  display: block;
}
.tutorial-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  transition: opacity 0.25s;
}
.tutorial-spotlight {
  position: absolute;
  border-radius: 6px;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.55);
  transition:
    top 0.35s ease,
    left 0.35s ease,
    width 0.35s ease,
    height 0.35s ease;
  z-index: 10001;
  pointer-events: none;
}
.tutorial-tooltip {
  position: absolute;
  z-index: 10002;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 16px 20px 14px;
  width: 340px;
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(148, 196, 255, 0.08);
  color: var(--text);
  transition:
    top 0.35s ease,
    left 0.35s ease,
    opacity 0.2s;
}
.tutorial-tooltip-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.tutorial-step-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-bg);
  padding: 2px 8px;
  border-radius: 10px;
}
.tutorial-close {
  background: none;
  border: none;
  color: var(--text2);
  font-size: 18px;
  cursor: pointer;
  line-height: 1;
  padding: 0 2px;
}
.tutorial-close:hover {
  color: var(--text);
}
.tutorial-title {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--text);
}
.tutorial-desc {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.5;
  margin: 0 0 14px;
}
.tutorial-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.tutorial-nav {
  display: flex;
  gap: 6px;
}
.tutorial-btn {
  padding: 5px 14px;
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border);
  transition:
    background 0.15s,
    color 0.15s;
}
.tutorial-btn-skip {
  background: none;
  color: var(--text2);
  border-color: transparent;
}
.tutorial-btn-skip:hover {
  color: var(--text);
}
.tutorial-btn-prev {
  background: var(--surface2);
  color: var(--text);
}
.tutorial-btn-prev:hover {
  background: var(--surface3);
}
.tutorial-btn-next {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.tutorial-btn-next:hover {
  filter: brightness(1.1);
}