:root {
  --c-fast: #f97316;
  --c-safe: #16a34a;
  --c-fallback: #f59e0b;
  --c-stress: #dc2626;
  --c-home: #facc15;
  --c-marker-high: #dc2626;
  --c-marker-mid:  #ef4444;
  --c-marker-low:  #f59e0b;
  --c-bg: #ffffff;
  --c-text: #0f172a;
  --c-text-muted: #64748b;
  --c-border: #e2e8f0;
  --shadow-panel: 0 4px 16px rgba(15, 23, 42, 0.12);
  --radius-panel: 8px;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; font-family: var(--font-stack); color: var(--c-text); }
#map { position: absolute; inset: 0; }
#ui-overlays { position: absolute; inset: 0; pointer-events: none; }
#ui-overlays > * { pointer-events: auto; }

#basemap-toggle {
  position: absolute; top: 12px; left: 12px;
  background: var(--c-bg); border: 1px solid var(--c-border);
  border-radius: var(--radius-panel); box-shadow: var(--shadow-panel);
  padding: 8px 12px; font: 14px var(--font-stack); cursor: pointer;
}
#basemap-toggle:hover { background: #f8fafc; }

#tier-selector {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 4px;
  background: var(--c-bg); border-radius: var(--radius-panel); box-shadow: var(--shadow-panel);
  padding: 4px;
}
#tier-selector button {
  background: transparent; border: none; padding: 8px 14px; cursor: pointer;
  font: 14px var(--font-stack); border-radius: 6px; color: var(--c-text);
}
#tier-selector button:hover { background: #f1f5f9; }
#tier-selector button.active { color: white; }
#tier-selector button[data-tier="kid"].active { background: #15803d; }
#tier-selector button[data-tier="parent"].active { background: #16a34a; }
#tier-selector button[data-tier="any"].active { background: #6b7280; }
.lts-allowance { font-size: 12px; opacity: 0.75; margin-left: 4px; }

/* Route color legend. Sits bottom-right above the maplibre attribution.
   Each route segment is colored by its raw LTS, so the legend maps colors
   to LTS levels + tier-friendly names (same wording as /explore). */
#route-legend {
  position: absolute; bottom: 24px; right: 12px;
  background: var(--c-bg); border-radius: var(--radius-panel);
  box-shadow: var(--shadow-panel);
  padding: 8px 12px;
  display: flex; flex-direction: column; gap: 4px;
  font: 12px var(--font-stack); color: var(--c-text);
  pointer-events: none;
}
.rl-item { display: flex; align-items: center; gap: 6px; }
.rl-swatch {
  display: inline-block;
  width: 18px; height: 4px; border-radius: 2px;
}
.rl-swatch.rl-lts-1 { background: #16a34a; }
.rl-swatch.rl-lts-2 { background: #f59e0b; }
.rl-swatch.rl-lts-3 { background: #dc2626; }

/* Horizontal divider between the LTS-color rows (top) and the line-style
   rows (bottom). Keeps the two semantic axes legible. */
.rl-sep {
  height: 1px; background: var(--c-border);
  margin: 4px 0 2px;
}

/* Line-style swatches: thin grey bar styled solid vs dashed so the
   row's visual matches the actual rendered route. Grey is intentional —
   the legend is teaching the LINE STYLE here, not the color (which the
   rows above already cover). */
.rl-swatch.rl-style-solid,
.rl-swatch.rl-style-dashed {
  background: transparent;
  height: 0;
  border-top: 3px solid #4b5563;
  width: 22px; border-radius: 0;
}
.rl-swatch.rl-style-dashed {
  border-top-style: dashed;
}

#home-form {
  position: absolute; top: 72px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 4px; flex-wrap: wrap;
  background: var(--c-bg); border-radius: var(--radius-panel); box-shadow: var(--shadow-panel);
  padding: 8px; width: 360px;
}
#home-input {
  flex: 1; min-width: 0;
  padding: 8px 10px; font: 14px var(--font-stack); color: var(--c-text);
  border: 1px solid var(--c-border); border-radius: 6px; background: white;
}
#home-input:focus { outline: 2px solid var(--c-safe); outline-offset: 0; }
#home-form button[type="submit"] {
  padding: 8px 12px; font: 14px var(--font-stack); cursor: pointer;
  background: var(--c-safe); color: white; border: none; border-radius: 6px;
}
#home-form button[type="submit"]:hover { background: #15803d; }
#home-form button[type="submit"]:disabled { opacity: 0.6; cursor: wait; }
#home-error {
  flex-basis: 100%;
  font-size: 12px; color: var(--c-stress); margin-top: 4px; min-height: 0;
}
#home-error:empty { display: none; }

/* Type-ahead suggestions dropdown — shared style between the home-input
   (top of page) and the custom-destination input (sidebar). flex-basis:100%
   on the parent flex wrap forces each UL onto its own row directly below
   its input, so the list spans the full panel width regardless of button
   width. */
#home-suggest,
#custom-suggest {
  flex-basis: 100%;
  list-style: none; margin: 4px 0 0; padding: 0;
  background: white; border: 1px solid var(--c-border);
  border-radius: 6px; box-shadow: 0 2px 8px rgba(15, 23, 42, 0.15);
  max-height: 260px; overflow-y: auto;
}
#home-suggest[hidden],
#custom-suggest[hidden] { display: none; }
.home-suggest-item,
.custom-suggest-item {
  padding: 8px 10px;
  font: 13px var(--font-stack); color: var(--c-text);
  cursor: pointer;
  border-bottom: 1px solid #f1f5f9;
}
.home-suggest-item:last-child,
.custom-suggest-item:last-child { border-bottom: none; }
.home-suggest-item:hover,
.home-suggest-item.selected,
.custom-suggest-item:hover,
.custom-suggest-item.selected {
  background: #ecfdf5; color: var(--c-text);
}

.home-marker {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--c-home); border: 3px solid white;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.35);
  cursor: pointer;
}

#dest-sidebar {
  position: absolute; top: 12px; left: 12px; width: 280px;
  margin-top: 56px;
  background: var(--c-bg); border-radius: var(--radius-panel); box-shadow: var(--shadow-panel);
  padding: 16px; font: 14px var(--font-stack); color: var(--c-text);
}
#dest-sidebar h2 { font-size: 15px; margin-bottom: 12px; font-weight: 600; }
#dest-sidebar[hidden] { display: none; }

#dest-categories { list-style: none; display: flex; flex-direction: column; gap: 6px; }
#dest-categories li label {
  display: flex; align-items: center; gap: 8px; cursor: pointer;
  padding: 6px 4px; border-radius: 6px;
}
#dest-categories li label:hover { background: #f1f5f9; }
.cat-icon { font-size: 18px; line-height: 1; }

.caveat { color: var(--c-text-muted); font-size: 12px; margin-top: 10px; line-height: 1.4; }

#custom-form {
  display: flex; gap: 4px; margin-top: 10px;
  flex-wrap: wrap;     /* lets #custom-suggest claim its own row below the input */
}
#custom-input {
  flex: 1; min-width: 0;
  padding: 6px 8px; font: 13px var(--font-stack);
  border: 1px solid var(--c-border); border-radius: 6px;
}
#custom-input:focus { outline: 2px solid var(--c-safe); outline-offset: 0; }
#custom-form button {
  padding: 6px 10px; font: 13px var(--font-stack); cursor: pointer;
  background: var(--c-safe); color: white; border: none; border-radius: 6px;
}
#custom-form button:hover { background: #15803d; }
#custom-form button:disabled { opacity: 0.6; cursor: wait; }
#custom-error {
  font-size: 12px; color: var(--c-stress); margin-top: 6px; min-height: 0;
}
#custom-error:empty { display: none; }

/* Resolved-destinations list — shown below the category checkboxes once
   destinations are added. Each row: emoji icon, name + address + distance,
   and a × button to remove. */
#dest-list {
  list-style: none; margin-top: 12px;
  display: flex; flex-direction: column; gap: 4px;
}
#dest-list:empty { display: none; }
.dest-list-item {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 8px; border-radius: 6px;
  background: #f8fafc; font-size: 12px;
}
.dl-icon { font-size: 16px; line-height: 1; flex-shrink: 0; }
.dl-text { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.dl-name { font-weight: 500; color: var(--c-text); }
.dl-name:not(:empty) + .dl-sub:empty { display: none; }
.dl-sub { color: var(--c-text-muted); font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dl-remove {
  flex-shrink: 0;
  border: none; background: transparent;
  color: var(--c-text-muted); cursor: pointer;
  font-size: 18px; line-height: 1; padding: 0 4px;
  border-radius: 4px;
}
.dl-remove:hover { background: #e2e8f0; color: var(--c-stress); }

.dest-marker {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--c-bg); border: 3px solid var(--c-safe);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; line-height: 1;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.3);
  cursor: pointer;
}
.dest-marker.category-school { border-color: #2563eb; }
.dest-marker.category-park { border-color: #16a34a; }
.dest-marker.category-grocery { border-color: #d97706; }
.dest-marker.category-hospital { border-color: #dc2626; }
.dest-marker.category-alderman { border-color: #7c3aed; }
.dest-marker.category-library { border-color: #0891b2; }
.dest-marker.category-transit { border-color: #475569; }
.dest-marker.category-custom { border-color: var(--c-text-muted); }

/* Best-effort fallback flag: amber outline + warning badge on the marker. */
.dest-marker.fallback {
  outline: 2px dashed var(--c-fallback);
  outline-offset: 2px;
}
.dest-marker.fallback::after {
  content: "⚠";
  position: absolute;
  bottom: -8px; right: -8px;
  width: 16px; height: 16px;
  background: var(--c-fallback); color: white;
  border-radius: 50%;
  font-size: 11px; line-height: 16px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.4);
}
/* See the comment on .gap-marker — same justification: position: absolute is
   required to align with maplibre's .maplibregl-marker rule so the inline
   transform tracks lng/lat. The ::after warning badge below positions itself
   relative to this element, which still works because absolute positioning
   creates a containing block for absolute descendants. */
.dest-marker { position: absolute; }

/* Avoided-intersection markers (Task 8). Size + color vary by aggregation rank.
   position: absolute is REQUIRED — it matches maplibre's `.maplibregl-marker`
   rule so the inline `transform` maplibre sets on every pan/zoom translates
   the marker from the map's origin (correctly tracking lng/lat). If this is
   `position: relative`, the marker falls into document flow and only the
   transform delta moves it, so the dot drifts off its intersection on pan. */
.gap-marker {
  position: absolute;
  border-radius: 50%;
  border: 3px solid white;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.4);
  cursor: pointer;
}
.gap-marker.size-high {
  width: 36px; height: 36px;
  background: var(--c-marker-high);
}
.gap-marker.size-mid {
  width: 26px; height: 26px;
  background: var(--c-marker-mid);
}
.gap-marker.size-low {
  width: 18px; height: 18px;
  background: var(--c-marker-low);
}
.gap-marker-badge,
.gap-marker-count {
  position: absolute;
  top: -6px; right: -6px;
  min-width: 16px; height: 16px; padding: 0 3px;
  background: white;
  color: var(--c-marker-high);
  border-radius: 8px;
  font: 600 11px var(--font-stack); line-height: 16px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.3);
}
.gap-marker-count {
  color: var(--c-marker-mid);
}

/* Inline "FIX THIS · Foster & Western" tag attached to the
   highest-priority gap marker on the overview (mockup §2.1 case 1). */
.gap-marker-fix-tag {
  position: absolute;
  left: calc(100% + 8px); top: 50%;
  transform: translateY(-50%);
  white-space: nowrap;
  background: #fef2f2;
  border: 1px solid var(--c-marker-high);
  border-radius: 6px;
  padding: 4px 8px;
  font: 600 11px var(--font-stack);
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.2);
  pointer-events: none;
}
.gap-marker-fix-tag.flips {
  background: #b91c1c;
  border-color: #7f1d1d;
  color: white;
}
.gmft-heading {
  font-size: 9px;
  letter-spacing: 0.6px;
  color: var(--c-marker-high);
  margin-bottom: 2px;
}
.gap-marker-fix-tag.flips .gmft-heading { color: #fee2e2; }
.gmft-street {
  color: var(--c-text);
  font-weight: 700;
}
.gap-marker-fix-tag.flips .gmft-street { color: white; }

#gap-loading {
  position: absolute;
  bottom: 24px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 10px;
  background: var(--c-bg); color: var(--c-text);
  padding: 10px 16px;
  border-radius: var(--radius-panel); box-shadow: var(--shadow-panel);
  font: 13px var(--font-stack);
}
#gap-loading[hidden] { display: none; }
.spinner {
  width: 14px; height: 14px;
  border: 2px solid var(--c-border);
  border-top-color: var(--c-safe);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Drill-down fact panel (Task 9). Slides in from the right when
   state.drilledPair becomes non-null. */
#fact-panel {
  position: absolute; right: 0; top: 0; bottom: 0; width: 340px;
  background: var(--c-bg); color: var(--c-text);
  box-shadow: -4px 0 16px rgba(15, 23, 42, 0.12);
  transform: translateX(100%); transition: transform 200ms ease;
  overflow-y: auto;
  font: 14px var(--font-stack);
}
#fact-panel.open { transform: translateX(0); }
.fp-header {
  padding: 12px 16px; border-bottom: 1px solid var(--c-border);
}
.fp-back {
  background: transparent; border: none; padding: 4px 0;
  color: var(--c-text-muted); cursor: pointer; font: 13px var(--font-stack);
}
.fp-back:hover { color: var(--c-text); }
.fp-body { padding: 16px; }
.fp-title { font-size: 18px; font-weight: 600; margin-bottom: 2px; }
.fp-sub { color: var(--c-text-muted); font-size: 12px; line-height: 1.4; }
.fp-warning {
  margin-top: 12px;
  background: #fef3c7; color: #78350f;
  padding: 8px 10px; border-radius: 6px;
  font-size: 12px;
}
.fp-metrics {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
  margin: 14px 0;
}
.fp-metric {
  background: #f8fafc; border-radius: 6px; padding: 8px 10px;
  display: flex; flex-direction: column;
}
.fp-metric-label { font-size: 11px; color: var(--c-text-muted); }
.fp-metric-value { font-size: 16px; font-weight: 600; }
.fp-metric-sub { font-size: 11px; color: var(--c-text-muted); }

.fp-section { margin-top: 16px; }
.fp-section h3 {
  font-size: 12px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--c-text-muted);
  margin-bottom: 8px;
}
.fp-empty {
  color: var(--c-text-muted); font-size: 13px; line-height: 1.5;
}
.fp-callout {
  background: #f8fafc; border-left: 3px solid var(--c-stress);
  padding: 10px 12px; border-radius: 0 6px 6px 0;
}
.fp-callout-head {
  display: flex; align-items: center; gap: 8px; margin-bottom: 6px;
}
.fp-callout p { font-size: 13px; line-height: 1.5; }
.fp-hin-badge {
  background: var(--c-stress); color: white;
  font-size: 10px; padding: 2px 6px; border-radius: 4px;
  font-weight: 600;
}
/* "FIX THIS" badge: shown when upgrading this candidate would flip the
   safe route from fallback (high-stress) to fully on-tier — the strongest
   advocacy framing per the mockup. */
.fp-fix-badge {
  background: #b91c1c; color: white;
  font-size: 10px; padding: 2px 6px; border-radius: 4px;
  font-weight: 700; letter-spacing: 0.5px;
}
.fp-callout-unfallback {
  border-left-color: #b91c1c;
  background: #fef2f2;
}

/* D' corridor advocacy: per-road list under the callout. */
.fp-corridor-roads {
  list-style: none; margin: 8px 0 0 0; padding: 0;
  display: flex; flex-direction: column; gap: 6px;
}
.fp-corridor-road {
  background: white; border: 1px solid #e2e8f0;
  border-radius: 4px; padding: 8px 10px;
}
.fp-corridor-road-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px;
}
.fp-corridor-road-sub {
  color: var(--c-text-muted); font-size: 11px;
}
.fp-corridor-road-marginal {
  margin-top: 3px; font-size: 11px; color: var(--c-text-muted);
}
.fp-corridor-road-minor {
  opacity: 0.55;
}
.fp-corridor-road-minor .fp-corridor-road-marginal em { font-style: normal; }

/* Danger-intersections section under the corridor callout. */
.fp-intersection-block { margin-top: 12px; }
.fp-section-sub {
  font-size: 11px; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--c-text-muted);
  margin: 0 0 6px 0;
}
.fp-intersection-list {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 6px;
}
.fp-intersection {
  background: #f8fafc; border-left: 3px solid var(--c-stress);
  padding: 8px 10px; border-radius: 0 4px 4px 0;
}
.fp-intersection-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; margin-bottom: 3px;
}
.fp-intersection-sub { font-size: 11px; color: var(--c-text-muted); }
.fp-copy-link {
  width: 100%; padding: 10px;
  background: var(--c-safe); color: white;
  border: none; border-radius: 6px; cursor: pointer;
  font: 14px var(--font-stack); font-weight: 500;
}
.fp-copy-link:hover { background: #15803d; }

/* Permalink modal (Task 10). */
#permalink-modal {
  position: absolute; inset: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: center;
}
#permalink-modal[hidden] { display: none; }
.pm-backdrop {
  position: absolute; inset: 0;
  background: rgba(15, 23, 42, 0.55);
}
.pm-card {
  position: relative;
  background: var(--c-bg); color: var(--c-text);
  border-radius: var(--radius-panel); box-shadow: var(--shadow-panel);
  padding: 24px 28px; max-width: 440px;
  font: 14px var(--font-stack);
}
.pm-card h2 {
  font-size: 18px; font-weight: 600; margin-bottom: 12px;
}
.pm-body { line-height: 1.55; margin-bottom: 18px; }
.pm-actions {
  display: flex; flex-direction: column; gap: 8px;
}
.pm-btn {
  width: 100%; padding: 12px 14px;
  border: none; border-radius: 6px; cursor: pointer;
  font: 14px var(--font-stack); font-weight: 500;
}
.pm-btn-primary { background: var(--c-safe); color: white; }
.pm-btn-primary:hover { background: #15803d; }
.pm-btn-secondary {
  background: white; color: var(--c-text);
  border: 1px solid var(--c-border);
}
.pm-btn-secondary:hover { background: #f8fafc; }
.pm-fine-print {
  margin-top: 12px;
  color: var(--c-text-muted); font-size: 12px; line-height: 1.5;
}
.pm-close {
  position: absolute; top: 12px; right: 12px;
  width: 28px; height: 28px;
  background: transparent; border: none; cursor: pointer;
  font-size: 20px; line-height: 1; color: var(--c-text-muted);
}
.pm-close:hover { color: var(--c-text); }
.pm-toast {
  margin-top: 12px;
  background: #ecfdf5; color: #065f46;
  padding: 8px 12px; border-radius: 6px;
  font-size: 12px; text-align: center;
}
.pm-toast[hidden] { display: none; }

#approx-badge {
  position: absolute; top: 12px; right: 12px;
  background: #fef3c7; color: #78350f;
  padding: 6px 10px; border-radius: 6px;
  font: 12px var(--font-stack); font-weight: 500;
  box-shadow: var(--shadow-panel);
}
#approx-badge[hidden] { display: none; }

/* Explorer page (Plan 2D). Reuses tokens + map styles from the advocacy
   view, adds page-specific bits. */
.explore-page #basemap-toggle:disabled {
  background: #f1f5f9;
  color: var(--c-text-muted);
  cursor: wait;
}

#back-to-advocacy {
  position: absolute; top: 12px; right: 12px;
  background: var(--c-bg); border: 1px solid var(--c-border);
  border-radius: var(--radius-panel); box-shadow: var(--shadow-panel);
  padding: 8px 12px;
  font: 14px var(--font-stack); color: var(--c-text); text-decoration: none;
}
#back-to-advocacy:hover { background: #f8fafc; }

#legend {
  position: absolute; bottom: 12px; right: 12px;
  background: var(--c-bg); border: 1px solid var(--c-border);
  border-radius: var(--radius-panel); box-shadow: var(--shadow-panel);
  padding: 12px 14px;
  font: 13px var(--font-stack); color: var(--c-text);
  min-width: 200px;
}
#legend[hidden] { display: none; }
.legend-row { display: flex; align-items: center; gap: 8px; margin: 4px 0; }
.legend-swatch {
  width: 18px; height: 4px; border-radius: 2px; display: inline-block;
}
.swatch-lts-1 { background: #16a34a; }
.swatch-lts-2 { background: #f59e0b; }
.swatch-lts-3 { background: #dc2626; }
.swatch-hin {
  /* Matches the explore.js hin-layer paint (color + opacity). Wider +
     translucent so a HIN street visually layers on top of its underlying
     LTS color rather than masking it. */
  background: #c026d3; opacity: 0.7; height: 6px;
  box-shadow: 0 0 0 1px white;
}

/* Top-right toggle row on /explore. Flex layout (rather than fixed `right:`
   offsets per toggle) keeps the toggles from overlapping each other —
   "Show High-Injury Network overlay" is ~280px wide, which used to clip
   under the adjacent "Show intersections" toggle when each was positioned
   independently. */
#explore-toggles {
  position: absolute; top: 12px; right: 200px;
  display: flex; gap: 8px; align-items: center;
}
#hin-toggle,
#intersections-toggle,
#lts-toggle {
  background: var(--c-bg); border: 1px solid var(--c-border);
  border-radius: var(--radius-panel); box-shadow: var(--shadow-panel);
  padding: 8px 12px;
  font: 14px var(--font-stack); color: var(--c-text);
  display: flex; align-items: center; gap: 6px;
  cursor: pointer;
  white-space: nowrap;
}
#hin-toggle[hidden],
#intersections-toggle[hidden],
#lts-toggle[hidden] { display: none; }
#hin-toggle input,
#intersections-toggle input,
#lts-toggle input { cursor: pointer; }

#explore-error {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  background: var(--c-bg); border: 1px solid var(--c-border);
  border-radius: var(--radius-panel); box-shadow: var(--shadow-panel);
  padding: 20px 24px; max-width: 360px; text-align: center;
  font: 14px var(--font-stack); color: var(--c-text);
}
#explore-error[hidden] { display: none; }
.ee-text { margin-bottom: 12px; }
.ee-retry {
  background: var(--c-safe); color: white;
  border: none; border-radius: 6px;
  padding: 8px 16px; font: 14px var(--font-stack); cursor: pointer;
}
.ee-retry:hover { background: #15803d; }

#explore-link {
  position: absolute; bottom: 12px; left: 12px;
  background: var(--c-bg); border: 1px solid var(--c-border);
  border-radius: var(--radius-panel); box-shadow: var(--shadow-panel);
  padding: 8px 12px;
  font: 14px var(--font-stack); color: var(--c-text); text-decoration: none;
}
#explore-link:hover { background: #f8fafc; }