:root {
  /* Raw Light & Dark Monotone Design Tokens */
  --bg-950-light: #f4f4f6;
  --bg-950-dark: #09090b;
  --bg-900-light: #ffffff;
  --bg-900-dark: #111114;
  --bg-850-light: #ededf0;
  --bg-850-dark: #18181c;
  --bg-800-light: #e2e2e7;
  --bg-800-dark: #222228;
  --bg-700-light: #d0d0d7;
  --bg-700-dark: #2e2e36;

  --border-subtle-light: #dcdce2;
  --border-subtle-dark: #27272f;
  --border-strong-light: #b8b8c2;
  --border-strong-dark: #3f3f4a;

  --text-primary-light: #09090b;
  --text-primary-dark: #fafafa;
  --text-secondary-light: #52525b;
  --text-secondary-dark: #a1a1aa;
  --text-muted-light: #71717a;
  --text-muted-dark: #71717a;

  --accent-contrast-light: #09090b;
  --accent-contrast-dark: #ffffff;
  --accent-contrast-fg-light: #ffffff;
  --accent-contrast-fg-dark: #09090b;
  --accent-hover-light: #27272a;
  --accent-hover-dark: #e4e4e7;
  --accent-silver-light: #52525b;
  --accent-silver-dark: #d4d4d8;

  --surface-glass-light: rgba(255, 255, 255, 0.92);
  --surface-glass-dark: rgba(15, 15, 18, 0.94);
  --surface-chip-light: rgba(255, 255, 255, 0.88);
  --surface-chip-dark: rgba(17, 17, 20, 0.88);

  --row-me-light: #e8e8ee;
  --row-me-dark: #1c1c22;
  --row-selected-light: #dcdce5;
  --row-selected-dark: #25252d;

  --error-fg-light: #dc2626;
  --error-fg-dark: #f87171;
  --error-bg-light: rgba(220, 38, 38, 0.08);
  --error-bg-dark: rgba(248, 113, 113, 0.12);
  --valid-border-light: #18181b;
  --valid-border-dark: #e4e4e7;

  --scrollbar-track-light: #ededf0;
  --scrollbar-track-dark: #18181c;
  --scrollbar-thumb-light: #a1a1aa;
  --scrollbar-thumb-dark: #52525b;

  /* Default (Light) Assignments + Fallback for browsers without light-dark() */
  --color-scheme: light;
  --bg-950: var(--bg-950-light);
  --bg-900: var(--bg-900-light);
  --bg-850: var(--bg-850-light);
  --bg-800: var(--bg-800-light);
  --bg-700: var(--bg-700-light);
  --border-subtle: var(--border-subtle-light);
  --border-strong: var(--border-strong-light);
  --text-primary: var(--text-primary-light);
  --text-secondary: var(--text-secondary-light);
  --text-muted: var(--text-muted-light);
  --accent-white: var(--accent-contrast-light);
  --accent-fg: var(--accent-contrast-fg-light);
  --accent-hover: var(--accent-hover-light);
  --accent-silver: var(--accent-silver-light);
  --surface-glass: var(--surface-glass-light);
  --surface-chip: var(--surface-chip-light);
  --row-me: var(--row-me-light);
  --row-selected: var(--row-selected-light);
  --error-fg: var(--error-fg-light);
  --error-bg: var(--error-bg-light);
  --valid-border: var(--valid-border-light);
  --scrollbar-track: var(--scrollbar-track-light);
  --scrollbar-thumb: var(--scrollbar-thumb-light);

  /* MANDATORY: Fallback for browsers without light-dark() support */
  @media (prefers-color-scheme: dark) {
    --color-scheme: dark;
    --bg-950: var(--bg-950-dark);
    --bg-900: var(--bg-900-dark);
    --bg-850: var(--bg-850-dark);
    --bg-800: var(--bg-800-dark);
    --bg-700: var(--bg-700-dark);
    --border-subtle: var(--border-subtle-dark);
    --border-strong: var(--border-strong-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --text-muted: var(--text-muted-dark);
    --accent-white: var(--accent-contrast-dark);
    --accent-fg: var(--accent-contrast-fg-dark);
    --accent-hover: var(--accent-hover-dark);
    --accent-silver: var(--accent-silver-dark);
    --surface-glass: var(--surface-glass-dark);
    --surface-chip: var(--surface-chip-dark);
    --row-me: var(--row-me-dark);
    --row-selected: var(--row-selected-dark);
    --error-fg: var(--error-fg-dark);
    --error-bg: var(--error-bg-dark);
    --valid-border: var(--valid-border-dark);
    --scrollbar-track: var(--scrollbar-track-dark);
    --scrollbar-thumb: var(--scrollbar-thumb-dark);
  }

  /* MANDATORY: Automatically adapt native UI to user system preferences */
  color-scheme: light dark;

  /* Reflect <meta name="color-scheme"> override in CSS (dark-mode-toggle) */
  &:has(> head > meta[name="color-scheme"][content="dark"]) {
    color-scheme: dark;
    --color-scheme: dark;
    --bg-950: var(--bg-950-dark);
    --bg-900: var(--bg-900-dark);
    --bg-850: var(--bg-850-dark);
    --bg-800: var(--bg-800-dark);
    --bg-700: var(--bg-700-dark);
    --border-subtle: var(--border-subtle-dark);
    --border-strong: var(--border-strong-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --text-muted: var(--text-muted-dark);
    --accent-white: var(--accent-contrast-dark);
    --accent-fg: var(--accent-contrast-fg-dark);
    --accent-hover: var(--accent-hover-dark);
    --accent-silver: var(--accent-silver-dark);
    --surface-glass: var(--surface-glass-dark);
    --surface-chip: var(--surface-chip-dark);
    --row-me: var(--row-me-dark);
    --row-selected: var(--row-selected-dark);
    --error-fg: var(--error-fg-dark);
    --error-bg: var(--error-bg-dark);
    --valid-border: var(--valid-border-dark);
    --scrollbar-track: var(--scrollbar-track-dark);
    --scrollbar-thumb: var(--scrollbar-thumb-dark);
  }

  &:has(> head > meta[name="color-scheme"][content="light"]) {
    color-scheme: light;
    --color-scheme: light;
    --bg-950: var(--bg-950-light);
    --bg-900: var(--bg-900-light);
    --bg-850: var(--bg-850-light);
    --bg-800: var(--bg-800-light);
    --bg-700: var(--bg-700-light);
    --border-subtle: var(--border-subtle-light);
    --border-strong: var(--border-strong-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --text-muted: var(--text-muted-light);
    --accent-white: var(--accent-contrast-light);
    --accent-fg: var(--accent-contrast-fg-light);
    --accent-hover: var(--accent-hover-light);
    --accent-silver: var(--accent-silver-light);
    --surface-glass: var(--surface-glass-light);
    --surface-chip: var(--surface-chip-light);
    --row-me: var(--row-me-light);
    --row-selected: var(--row-selected-light);
    --error-fg: var(--error-fg-light);
    --error-bg: var(--error-bg-light);
    --valid-border: var(--valid-border-light);
    --scrollbar-track: var(--scrollbar-track-light);
    --scrollbar-thumb: var(--scrollbar-thumb-light);
  }

  /* Modern light-dark() automatic resolution */
  @supports (color: light-dark(white, black)) {
    --bg-950: light-dark(var(--bg-950-light), var(--bg-950-dark));
    --bg-900: light-dark(var(--bg-900-light), var(--bg-900-dark));
    --bg-850: light-dark(var(--bg-850-light), var(--bg-850-dark));
    --bg-800: light-dark(var(--bg-800-light), var(--bg-800-dark));
    --bg-700: light-dark(var(--bg-700-light), var(--bg-700-dark));
    --border-subtle: light-dark(var(--border-subtle-light), var(--border-subtle-dark));
    --border-strong: light-dark(var(--border-strong-light), var(--border-strong-dark));
    --text-primary: light-dark(var(--text-primary-light), var(--text-primary-dark));
    --text-secondary: light-dark(var(--text-secondary-light), var(--text-secondary-dark));
    --text-muted: light-dark(var(--text-muted-light), var(--text-muted-dark));
    --accent-white: light-dark(var(--accent-contrast-light), var(--accent-contrast-dark));
    --accent-fg: light-dark(var(--accent-contrast-fg-light), var(--accent-contrast-fg-dark));
    --accent-hover: light-dark(var(--accent-hover-light), var(--accent-hover-dark));
    --accent-silver: light-dark(var(--accent-silver-light), var(--accent-silver-dark));
    --surface-glass: light-dark(var(--surface-glass-light), var(--surface-glass-dark));
    --surface-chip: light-dark(var(--surface-chip-light), var(--surface-chip-dark));
    --row-me: light-dark(var(--row-me-light), var(--row-me-dark));
    --row-selected: light-dark(var(--row-selected-light), var(--row-selected-dark));
    --error-fg: light-dark(var(--error-fg-light), var(--error-fg-dark));
    --error-bg: light-dark(var(--error-bg-light), var(--error-bg-dark));
    --valid-border: light-dark(var(--valid-border-light), var(--valid-border-dark));
    --scrollbar-track: light-dark(var(--scrollbar-track-light), var(--scrollbar-track-dark));
    --scrollbar-thumb: light-dark(var(--scrollbar-thumb-light), var(--scrollbar-thumb-dark));
  }

  accent-color: var(--accent-white);
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
  scrollbar-width: thin;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* Legacy fallback for WebKit/Blink browsers without scrollbar-color */
@supports not (scrollbar-color: auto) {
  ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  ::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
  }
  ::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
  }
}

/* Theme toggle option visibility branching (selector-atrule-combinations + fallback) */
.theme-toggle-option {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* Fallback branching when container style queries are unavailable */
:root:not(:has(> head > meta[name="color-scheme"][content="dark"])) .if-dark {
  display: none;
}

@media (prefers-color-scheme: dark) {
  :root:not(:has(> head > meta[name="color-scheme"][content="light"])) .if-dark {
    display: inline-flex;
  }
  :root:not(:has(> head > meta[name="color-scheme"][content="light"])) .if-light {
    display: none;
  }
}

:root:has(> head > meta[name="color-scheme"][content="dark"]) .if-light {
  display: none;
}

:root:has(> head > meta[name="color-scheme"][content="light"]) .if-dark {
  display: none;
}

/* Container style query branching on --color-scheme (selector-atrule-combinations) */
@container not style(--color-scheme: dark) {
  .if-dark {
    display: none !important;
  }
}

@container not style(--color-scheme: light) {
  .if-light {
    display: none !important;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100dvh;
  background-color: var(--bg-950);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* App Shell */
.app-shell {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100dvh;
}

/* Top Bar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  background: var(--bg-900);
  border-block-end: 1px solid var(--border-subtle);
  flex-shrink: 0;
  z-index: 20;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-width: 0;
  flex: 1;
}

.brand-group > div {
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 0.45rem;
  background: var(--accent-white);
  color: var(--accent-fg);
  flex-shrink: 0;
}

.brand-title {
  margin: 0;
  font-size: clamp(0.95rem, 0.85rem + 0.4vw, 1.15rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.1;
  white-space: nowrap;
}

.brand-subtitle {
  margin: 0.1rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  background: var(--bg-850);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
}

.status-dot {
  width: 0.48rem;
  height: 0.48rem;
  border-radius: 50%;
  background: var(--text-secondary);
}

.status-dot--live {
  background: var(--accent-white);
  box-shadow: 0 0 0 3px rgba(128, 128, 128, 0.25);
  animation: pulse-mono 2s infinite;
}

@keyframes pulse-mono {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: 0.45rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.5rem 0.9rem;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, opacity 0.15s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn--sm {
  padding: 0.38rem 0.7rem;
  font-size: 0.78rem;
}

.btn--xs {
  padding: 0.28rem 0.55rem;
  font-size: 0.73rem;
}

.btn--full {
  width: 100%;
}

.btn--primary {
  background: var(--accent-white);
  color: var(--accent-fg);
  border-color: var(--accent-white);
}

.btn--primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn--outline {
  background: var(--bg-850);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn--outline:hover:not(:disabled) {
  background: var(--bg-800);
  border-color: var(--accent-silver);
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-subtle);
}

.btn--ghost:hover:not(:disabled) {
  background: var(--bg-850);
  color: var(--text-primary);
}

/* Main Workspace Split Layout */
.workspace {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(360px, 0.95fr);
  min-height: 0;
  overflow: hidden;
}

/* Map Stage */
.map-stage {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  min-height: 240px;
  background: var(--bg-950);
  overflow: hidden;
}

.map-viewport {
  position: relative;
  flex: 1;
  width: 100%;
  height: 100%;
  min-height: 180px;
  overflow: hidden;
}

.show-mobile-only {
  display: none;
}

/* CF2 Mandatory explicit height on Google Map container */
#google-map,
gmp-map,
.map-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Allow colorized routes & markers to pop on the monotone DARK/LIGHT base map */
#google-map {
  filter: contrast(1.04);
}

#google-map[hidden],
.map-canvas[hidden] {
  display: none !important;
}

.map-overlay-top {
  position: absolute;
  inset-block-start: 0.75rem;
  inset-inline: 0.75rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
  pointer-events: none;
  z-index: 10;
}

.map-pill-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  pointer-events: auto;
  max-width: 100%;
}

.map-camera-group {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}

.route-selector-group {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.3rem;
  padding: 0.18rem;
  border-radius: 999px;
  background: var(--surface-hud);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(10px);
}

.route-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  border-color: transparent;
  background: transparent;
  padding: 0.26rem 0.62rem;
}

.route-chip small {
  opacity: 0.72;
  font-family: var(--font-mono);
  font-size: 0.66rem;
}

.route-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.35);
}

.route-dot--multi {
  background: conic-gradient(#10b981 0deg 120deg, #3b82f6 120deg 240deg, #f43f5e 240deg 360deg);
}

.route-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  padding: 0.08rem 0.42rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  border: 1px solid currentColor;
}

.map-chip {
  background: var(--surface-chip);
  backdrop-filter: blur(8px);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.32rem 0.7rem;
  font-size: 0.74rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.map-chip:hover {
  background: var(--bg-800);
  border-color: var(--accent-white);
}

.map-chip.is-active {
  background: var(--accent-white);
  color: var(--accent-fg);
  border-color: var(--accent-white);
  font-weight: 600;
}

.map-attribution {
  pointer-events: auto;
  background: var(--surface-chip);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.55rem;
  border-radius: 0.35rem;
  font-size: 0.68rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

/* Active Rider Telemetry HUD */
.rider-hud {
  position: absolute;
  inset-inline: 0.75rem;
  inset-block-end: 0.75rem;
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-strong);
  border-radius: 0.7rem;
  padding: 0.75rem 0.9rem;
  z-index: 12;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}

.rider-hud__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding-block-end: 0.65rem;
  border-block-end: 1px solid var(--border-subtle);
}

.rider-identity {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.bib-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.28rem 0.55rem;
  border-radius: 0.35rem;
  background: var(--accent-white);
  color: var(--accent-fg);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

.rider-name-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.92rem;
}

.status-pill {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.12rem 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--bg-800);
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.status-pill--moving {
  background: var(--accent-white);
  color: var(--accent-fg);
  border-color: var(--accent-white);
}

.status-pill--stopped {
  background: transparent;
  color: var(--text-primary);
  border-style: dashed;
  border-color: var(--accent-white);
}

.rider-meta {
  display: block;
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-block-start: 0.1rem;
}

.rider-hud__controls {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.telemetry-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.5rem;
  padding-block-start: 0.65rem;
}

.telemetry-cell {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.telemetry-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
}

.telemetry-value {
  font-size: clamp(0.85rem, 0.75rem + 0.45vw, 1.1rem);
  font-weight: 700;
  color: var(--text-primary);
}

.telemetry-value small {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--text-secondary);
}

/* Right/Bottom Data Panel */
.data-panel {
  display: flex;
  flex-direction: column;
  background: var(--bg-900);
  border-inline-start: 1px solid var(--border-subtle);
  min-height: 0;
  overflow: hidden;
}

.panel-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--bg-950);
  border-block-end: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.panel-tab {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.75rem 0.9rem;
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-block-end: 2px solid transparent;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.82rem;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.panel-tab:hover {
  color: var(--text-primary);
  background: var(--bg-900);
}

.panel-tab.is-active {
  color: var(--text-primary);
  border-block-end-color: var(--accent-white);
  background: var(--bg-900);
}

@media (min-width: 1025px) {
  .workspace[data-active-tab="map"] #tab-btn-leaderboard {
    color: var(--text-primary);
    border-block-end-color: var(--accent-white);
    background: var(--bg-900);
  }
}

.tab-counter {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.1rem 0.42rem;
  border-radius: 999px;
  background: var(--bg-800);
  color: var(--text-primary);
}

.tab-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 0.9rem;
  overflow-y: auto;
  min-height: 0;
}

.tab-content[hidden] {
  display: none !important;
}

.panel-section-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-block-end: 0.75rem;
}

.panel-section-header--spaced {
  margin-block-start: 1.35rem;
  padding-block-start: 1rem;
  border-block-start: 1px solid var(--border-subtle);
}

.section-title {
  margin: 0;
  font-size: clamp(0.9rem, 0.85rem + 0.25vw, 1rem);
  font-weight: 700;
}

.section-desc {
  margin: 0.15rem 0 0;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.toggle-inline {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

/* =========================================================================
   Responsive Leaderboard Table (modern-web-guidance: responsive-table)
   ========================================================================= */
.table-wrapper {
  overflow: auto;
  max-inline-size: 100%;
  max-block-size: min(560px, 72dvh);
  container-type: inline-size;
  border: 1px solid var(--border-subtle);
  border-radius: 0.55rem;
  background: var(--bg-950);
}

.table-wrapper:focus-visible {
  outline: 2px solid var(--accent-white);
  outline-offset: 2px;
}

.leaderboard-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.8rem;
  --label-2: "Status";
  --label-3: "Distance";
  --label-4: "Moving Time";
  --label-5: "Stops";
  --label-6: "Avg Speed";
}

/* Sticky column headers (desktop) */
.leaderboard-table thead {
  position: sticky;
  inset-block-start: 0;
  z-index: 2;
  background: var(--bg-850);
}

.leaderboard-table thead th {
  text-align: left;
  padding: 0.6rem 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  border-block-end: 1px solid var(--border-subtle);
}

.leaderboard-table tbody tr {
  cursor: pointer;
  transition: background-color 0.12s ease;
}

.leaderboard-table tbody tr:hover th,
.leaderboard-table tbody tr:hover td {
  background: var(--bg-850);
}

.leaderboard-table tbody tr.is-me th,
.leaderboard-table tbody tr.is-me td {
  background: var(--row-me);
}

.leaderboard-table tbody tr.is-selected th,
.leaderboard-table tbody tr.is-selected td {
  background: var(--row-selected);
}

/* Sticky row headers (desktop) */
.leaderboard-table tbody th {
  position: sticky;
  inset-inline-start: 0;
  z-index: 1;
  background: var(--bg-950);
  text-align: left;
  padding: 0.65rem;
  font-weight: 600;
  border-block-end: 1px solid var(--border-subtle);
}

.leaderboard-table tbody td {
  padding: 0.65rem;
  border-block-end: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  white-space: nowrap;
}

.rider-cell-main {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.rank-badge {
  display: inline-grid;
  place-items: center;
  min-width: 1.4rem;
  height: 1.4rem;
  padding: 0 0.25rem;
  border-radius: 0.3rem;
  background: var(--bg-800);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
}

.rank-badge--1 {
  background: var(--accent-white);
  color: var(--accent-fg);
}

.rider-cell-sub {
  display: block;
  font-size: 0.68rem;
  font-weight: 400;
  color: var(--text-secondary);
  margin-block-start: 0.1rem;
}

/* Container query stacked layout when leaderboard container is narrow (< 460px) */
@container (width < 460px) {
  .leaderboard-table,
  .leaderboard-table thead,
  .leaderboard-table tbody,
  .leaderboard-table tr,
  .leaderboard-table th,
  .leaderboard-table td {
    display: block;
  }

  .leaderboard-table thead {
    /* MANDATORY: Hide column header from layout and screen readers */
    display: none;
  }

  .leaderboard-table tbody tr {
    margin: 0.55rem;
    border: 1px solid var(--border-strong);
    border-radius: 0.5rem;
    overflow: hidden;
  }

  .leaderboard-table tbody th {
    position: sticky;
    inset-block-start: 0;
    z-index: 2;
    background: var(--bg-850);
    border-block-end: 1px solid var(--border-subtle);
  }

  .leaderboard-table tbody td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.45rem 0.65rem;
  }

  .leaderboard-table td:nth-child(2)::before {
    content: var(--label-2) ": ";
    color: var(--text-secondary);
    font-family: var(--font-sans);
  }

  .leaderboard-table td:nth-child(3)::before {
    content: var(--label-3) ": ";
    color: var(--text-secondary);
    font-family: var(--font-sans);
  }

  .leaderboard-table td:nth-child(4)::before {
    content: var(--label-4) ": ";
    color: var(--text-secondary);
    font-family: var(--font-sans);
  }

  .leaderboard-table td:nth-child(5)::before {
    content: var(--label-5) ": ";
    color: var(--text-secondary);
    font-family: var(--font-sans);
  }

  .leaderboard-table td:nth-child(6)::before {
    content: var(--label-6) ": ";
    color: var(--text-secondary);
    font-family: var(--font-sans);
  }
}

/* Stops Timeline & Checkpoints List */
.stops-timeline {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.stop-card {
  padding: 0.65rem 0.75rem;
  border-radius: 0.5rem;
  background: var(--bg-950);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.stop-card:hover {
  border-color: var(--accent-silver);
}

.stop-card--active {
  border-style: dashed;
  border-color: var(--accent-white);
}

.stop-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.stop-card__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.4rem;
  margin-block-start: 0.3rem;
  font-size: 0.72rem;
  color: var(--text-secondary);
}

.empty-state {
  padding: 1.25rem;
  text-align: center;
  border: 1px dashed var(--border-subtle);
  border-radius: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.78rem;
}

.checkpoints-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.checkpoint-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  padding: 0.55rem 0.7rem;
  border-radius: 0.45rem;
  background: var(--bg-950);
  border: 1px solid var(--border-subtle);
  font-size: 0.78rem;
  cursor: pointer;
}

.checkpoint-item:hover {
  border-color: var(--border-strong);
}

.checkpoint-code {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.7rem;
  padding: 0.18rem 0.45rem;
  border-radius: 0.3rem;
  background: var(--bg-800);
  color: var(--text-primary);
}

/* =========================================================================
   Dialogs (modern-web-guidance: light-dismiss-a-dialog)
   ========================================================================= */
dialog.monotone-dialog {
  width: min(460px, calc(100dvw - 1.5rem));
  background: var(--bg-900);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: 0.85rem;
  padding: 0;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

dialog.monotone-dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(3px);
}

.dialog-inner {
  padding: 1.25rem;
}

.dialog-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.dialog-title {
  margin: 0.15rem 0 0;
  font-size: 1.15rem;
  font-weight: 700;
}

.icon-close-btn {
  background: var(--bg-850);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 0.4rem;
  width: 2rem;
  height: 2rem;
  cursor: pointer;
  display: grid;
  place-items: center;
}

.icon-close-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.dialog-lead {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin: 0.65rem 0 1rem;
}

/* =========================================================================
   Form Validation (modern-web-guidance: validate-input-after-interaction)
   ========================================================================= */
.field {
  margin-block-end: 0.9rem;
}

.field label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  margin-block-end: 0.18rem;
}

.hint {
  display: block;
  color: var(--text-secondary);
  font-size: 0.73rem;
  margin-block-end: 0.35rem;
}

.field input,
.field select {
  width: 100%;
  padding: 0.58rem 0.75rem;
  border-radius: 0.45rem;
  background: var(--bg-950);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.field input:focus,
.field select:focus {
  border-color: var(--accent-white);
}

.error-msg {
  display: none;
  color: var(--error-fg);
  font-size: 0.76rem;
  margin-block-start: 0.3rem;
}

/* Show error styles only after user interaction (:user-invalid + fallback) */
.field input:user-invalid,
.field input.user-invalid-fallback {
  border-color: var(--error-fg);
  background-color: var(--error-bg);
}

.field input:user-invalid + .error-msg,
.field input.user-invalid-fallback + .error-msg {
  display: block;
}

.field input:user-valid,
.field input.user-valid-fallback {
  border-color: var(--valid-border);
}

.consent-box {
  padding: 0.65rem 0.75rem;
  border-radius: 0.45rem;
  background: var(--bg-950);
  border: 1px solid var(--border-subtle);
  margin-block-end: 1rem;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
  cursor: pointer;
}

.checkbox-label input {
  margin-block-start: 0.18rem;
}

.dialog-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.55rem;
  margin-block-start: 1rem;
}

.stop-presets {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
  margin-block-end: 0.9rem;
}

.preset-chip {
  padding: 0.5rem 0.65rem;
  border-radius: 0.45rem;
  background: var(--bg-950);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  font-size: 0.76rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
}

.preset-chip.is-selected,
.preset-chip:hover {
  background: var(--accent-white);
  color: var(--accent-fg);
  border-color: var(--accent-white);
  font-weight: 600;
}

.info-callout {
  padding: 0.75rem;
  border-radius: 0.5rem;
  background: var(--bg-950);
  border: 1px solid var(--border-subtle);
  font-size: 0.76rem;
  color: var(--text-secondary);
}

.info-callout a {
  color: var(--text-primary);
}

.compact-list {
  margin: 0.4rem 0 0;
  padding-inline-start: 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

/* Custom AdvancedMarkerElement HTML Badges on Google Maps */
.gmp-rider-marker {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.22rem 0.5rem;
  border-radius: 999px;
  background: var(--bg-900);
  color: var(--text-primary);
  border: 2px solid var(--accent-white);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
  white-space: nowrap;
}

.gmp-rider-marker--me {
  background: var(--accent-white);
  color: var(--accent-fg);
  border-color: var(--bg-900);
}

.gmp-rider-marker--stopped {
  border-style: dashed;
}

.gmp-checkpoint-pin {
  padding: 0.16rem 0.42rem;
  border-radius: 0.25rem;
  background: var(--bg-850);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
}

/* =========================================================================
   Responsive Narrow Screen, Tablet & Mobile Layout (<= 1024px and <= 560px)
   ========================================================================= */
@media (max-width: 1024px) {
  .show-mobile-only {
    display: inline-flex;
  }

  .hide-xs {
    display: none !important;
  }

  .topbar {
    padding: 0.48rem 0.65rem;
    padding-block-start: max(0.48rem, env(safe-area-inset-top));
    gap: 0.45rem;
  }

  .brand-mark {
    width: 1.85rem;
    height: 1.85rem;
  }

  .brand-title {
    font-size: 0.92rem;
  }

  .brand-subtitle {
    font-size: 0.62rem;
  }

  .topbar-actions {
    gap: 0.35rem;
    flex-shrink: 0;
  }

  /* 3-Tab Full-View Workspace on Narrow & Tablet: Map | Leaderboard | Stops */
  .workspace {
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }

  .data-panel {
    display: contents;
  }

  .panel-tabs {
    order: 1;
    grid-template-columns: repeat(3, 1fr);
    flex-shrink: 0;
    border-block-end: 1px solid var(--border-subtle);
  }

  .map-stage {
    order: 2;
    flex: 1;
    min-height: 0;
    width: 100%;
  }

  /* When Leaderboard or Stops tab is active on narrow/tablet, hide the map completely */
  .workspace:not([data-active-tab="map"]) .map-stage {
    display: none !important;
  }

  /* When Map tab is active on narrow/tablet, show Map only (hide Leaderboard & Stops panels) */
  .workspace[data-active-tab="map"] .tab-content {
    display: none !important;
  }

  /*Single-row Horizontally Scrollable Map Pill Bar on Mobile/Tablet */
  .map-overlay-top {
    inset-block-start: 0.5rem;
    inset-inline: 0.5rem;
  }

  .map-pill-bar {
    flex-wrap: nowrap;
    overflow-x: auto;
    max-width: 100%;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    padding-block-end: 0.15rem;
    gap: 0.35rem;
  }

  .map-pill-bar::-webkit-scrollbar {
    display: none;
  }

  .route-selector-group {
    flex-wrap: nowrap;
    flex-shrink: 0;
  }

  .route-chip,
  .map-chip {
    flex-shrink: 0;
    white-space: nowrap;
    padding: 0.3rem 0.58rem;
    font-size: 0.72rem;
  }

  .map-attribution {
    display: none;
  }

  /* Dock Rider HUD cleanly below the map canvas on mobile so it never obscures routes */
  .rider-hud {
    position: relative;
    inset: auto;
    border-radius: 0;
    border-inline: none;
    border-block-end: none;
    padding: 0.5rem 0.65rem;
    background: var(--bg-900);
    box-shadow: none;
    flex-shrink: 0;
  }

  .rider-hud__header {
    gap: 0.45rem;
    padding-block-end: 0.45rem;
  }

  .rider-hud.is-collapsed .rider-hud__header {
    padding-block-end: 0;
    border-block-end: none;
  }

  .rider-hud.is-collapsed .telemetry-grid {
    display: none;
  }

  .rider-identity {
    min-width: 0;
    flex: 1;
    gap: 0.45rem;
  }

  .rider-identity__text {
    min-width: 0;
  }

  .rider-meta {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .rider-hud__controls {
    flex-wrap: wrap;
    gap: 0.3rem;
  }

  .telemetry-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0.35rem;
    padding-block-start: 0.45rem;
  }

  .telemetry-label {
    font-size: 0.56rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .telemetry-value {
    font-size: 0.8rem;
  }

  .telemetry-value small {
    font-size: 0.62rem;
  }

  /* Tab Bar & Full-Height Content Panels on Narrow & Tablet */
  .panel-tab {
    padding: 0.65rem 0.55rem;
    font-size: 0.78rem;
    gap: 0.35rem;
  }

  .tab-content {
    order: 3;
    flex: 1;
    min-height: 0;
    width: 100%;
    background: var(--bg-900);
    padding: 0.75rem;
    padding-block-end: max(0.75rem, env(safe-area-inset-bottom));
  }

  .table-wrapper {
    max-block-size: none;
  }

  .checkpoint-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  .checkpoint-item > span.mono {
    align-self: flex-end;
    font-size: 0.72rem;
    color: var(--text-secondary);
  }

  /* Prevent iOS Safari input auto-zoom (requires >= 16px font-size) */
  .field input,
  .field select {
    font-size: 1rem;
    padding: 0.62rem 0.75rem;
  }
}

@media (max-width: 560px) {
  #peloton-count-badge {
    display: none;
  }

  .telemetry-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .rider-hud__controls {
    width: 100%;
    justify-content: space-between;
  }

  .rider-hud__controls .btn {
    flex: 1;
    justify-content: center;
    padding: 0.38rem 0.45rem;
  }

  /* Bottom-sheet style dialogs on phones */
  dialog.monotone-dialog {
    width: 100dvw;
    max-width: 100dvw;
    max-height: 92dvh;
    margin: auto 0 0 0;
    border-end-start-radius: 0;
    border-end-end-radius: 0;
    border-inline: none;
    border-block-end: none;
  }

  .dialog-inner {
    padding: 1rem;
    padding-block-end: max(1rem, env(safe-area-inset-bottom));
    max-height: 90dvh;
    overflow-y: auto;
  }

  .stop-presets {
    grid-template-columns: 1fr;
  }
}