:root {
  --map-tool-size: 44px;
  --map-tool-ink: #0f172a;
  --map-tool-hover: #e8f2f5;
  --map-tool-divider: rgba(15, 23, 42, 0.12);
  --map-tool-focus: #0891b2;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  flex-direction: column;
  /* Legacy fallback. Some mobile browsers treat 100vh as the screen height
     behind their expanded toolbar, which can obscure bottom map controls. */
  height: 100vh;
}

/* Follow the genuinely visible viewport when browser chrome expands or
   retracts. On desktop, and when mobile chrome is hidden, this equals 100vh. */
@supports (height: 100dvh) {
  body {
    height: 100dvh;
  }
}

/* make the map fill the remaining space under the header */
#map {
  flex: 1 1 auto;
  min-height: 0;
}

/* Header styling */
#site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 44px;
  line-height: 44px;
  padding: 0 12px;
  background: #0f172a;
  color: #ffffff;
  font-weight: 600;
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  box-shadow: 0 1px 2px rgba(0,0,0,0.2);
  z-index: 1000;
}

#header-acknowledgement {
  font-size: 12px;
  font-weight: 400;
  color: #cbd5e1;
}

#header-acknowledgement a {
  color: #e2e8f0;
  text-decoration: none;
}

#header-acknowledgement a:hover {
  text-decoration: underline;
}

/* 3D button in the header */
#view-3d-btn {
  display: inline-block;
  background: #06b6d4;
  color: #062024;
  border-radius: 6px;
  padding: 6px 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 13px;
  line-height: 1;
  box-shadow: 0 1px 0 rgba(0,0,0,0.15);
}
#view-3d-btn:hover {
  opacity: 0.95;
}

/* Splash screen styling */
#splash-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

#splash-content {
  background-color: rgba(15, 23, 42, 0.9);
  color: white;
  padding: 30px;
  border-radius: 12px;
  max-width: 600px;
  width: 90%;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

#splash-content h2 {
  margin-top: 0;
  margin-bottom: 15px;
  font-size: 1.8em;
}

#splash-content p {
  margin-bottom: 10px;
  line-height: 1.6;
}

#continue-btn {
  background-color: #06b6d4;
  color: #062024;
  border: none;
  border-radius: 6px;
  padding: 12px 24px;
  font-size: 1em;
  font-weight: 700;
  cursor: pointer;
  margin-top: 20px;
  box-shadow: 0 1px 0 rgba(0,0,0,0.15);
  transition: background-color 0.2s;
}

#continue-btn:hover {
  background-color: #0891b2;
}

#splash-screen.hidden {
  display: none;
}

/* Loading indicator */
#loading-indicator {
  position: fixed;
  top: 60px;
  right: 12px;
  background: rgba(15, 23, 42, 0.9);
  color: white;
  padding: 10px 16px;
  border-radius: 6px;
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 13px;
  z-index: 1000;
  display: none;
  align-items: center;
  gap: 10px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

#loading-indicator.active {
  display: flex;
}

/* Unified cartographic tool rail. Leaflet creates each control independently;
   main.js moves the related controls into this shared, consistently sized rail. */
.map-tool-panel.leaflet-control {
  box-sizing: content-box;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  width: var(--map-tool-size);
  margin: 12px 0 0 12px;
  padding: 4px;
  gap: 3px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 13px;
  background: rgba(248, 250, 252, 0.94);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.22), 0 1px 2px rgba(15, 23, 42, 0.18);
  backdrop-filter: blur(12px) saturate(1.15);
  -webkit-backdrop-filter: blur(12px) saturate(1.15);
}

.map-tool-panel > .leaflet-control {
  float: none;
  clear: none;
  width: var(--map-tool-size);
  margin: 0 !important;
  border: 0;
  border-radius: 8px;
  background: transparent;
  box-shadow: none;
}

.map-tool-panel .leaflet-control-zoom {
  overflow: hidden;
}

.map-tool-panel .leaflet-control-zoom a,
.map-tool-panel .location-control-button,
.map-tool-panel .share-control-button,
.map-tool-panel .leaflet-control-geocoder-icon,
.map-tool-panel .opacity-toggle {
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--map-tool-size) !important;
  min-width: var(--map-tool-size);
  height: var(--map-tool-size) !important;
  min-height: var(--map-tool-size);
  padding: 0;
  border: 0;
  border-radius: 8px;
  background-color: transparent;
  color: var(--map-tool-ink);
  box-shadow: none;
  cursor: pointer;
  touch-action: manipulation;
}

.map-tool-panel .leaflet-control-zoom a {
  font: 600 24px/var(--map-tool-size) ui-rounded, "SF Pro Rounded", "Segoe UI", sans-serif;
  text-indent: 0;
}

.map-tool-panel .leaflet-control-zoom-in {
  border-bottom: 1px solid var(--map-tool-divider);
  border-radius: 8px 8px 3px 3px;
}

.map-tool-panel .leaflet-control-zoom-out {
  border-radius: 3px 3px 8px 8px;
}

.map-tool-panel .leaflet-control-zoom a:hover,
.map-tool-panel .leaflet-control-zoom a:focus,
.map-tool-panel .location-control-button:hover,
.map-tool-panel .share-control-button:hover,
.map-tool-panel .leaflet-control-geocoder-icon:hover,
.map-tool-panel .opacity-toggle:hover,
.map-tool-panel .opacity-toggle[aria-expanded="true"] {
  background-color: var(--map-tool-hover);
  color: #075985;
}

.map-tool-panel .leaflet-control-zoom a:focus-visible,
.map-tool-panel .location-control-button:focus-visible,
.map-tool-panel .share-control-button:focus-visible,
.map-tool-panel .leaflet-control-geocoder-icon:focus-visible,
.map-tool-panel .opacity-toggle:focus-visible {
  outline: 3px solid var(--map-tool-focus);
  outline-offset: -3px;
}

.map-tool-panel .leaflet-control-geocoder {
  position: relative;
  min-width: var(--map-tool-size);
  min-height: var(--map-tool-size);
  overflow: visible;
}

.map-tool-panel .leaflet-control-geocoder-icon {
  background-size: 25px 25px;
}

.map-tool-panel .leaflet-control-geocoder-expanded {
  display: flex;
  width: min(300px, calc(100vw - 82px));
  border: 1px solid rgba(15, 23, 42, 0.16);
  border-radius: 10px;
  background: #ffffff;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.22);
}

.map-tool-panel .leaflet-control-geocoder-expanded .leaflet-control-geocoder-form {
  flex: 1;
  min-width: 0;
}

.map-tool-panel .leaflet-control-geocoder-expanded .leaflet-control-geocoder-form input {
  box-sizing: border-box;
  width: 100%;
  height: var(--map-tool-size);
  padding: 0 10px 0 2px;
  font-size: 15px;
}

.map-tool-panel .leaflet-control-geocoder-alternatives,
.map-tool-panel .leaflet-control-geocoder-error {
  position: absolute;
  top: calc(100% + 5px);
  left: 0;
  box-sizing: border-box;
  width: min(300px, calc(100vw - 82px));
  border-radius: 9px;
  background: #ffffff;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.2);
}

/* Browser geolocation control */
.location-control {
  background: transparent;
}

.location-control-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--map-tool-size);
  height: var(--map-tool-size);
  padding: 0;
  border: 0;
  background: #ffffff;
  color: #0f172a;
  cursor: pointer;
  touch-action: manipulation;
}

.location-control-button:hover {
  background: #f1f5f9;
}

.location-control-button:focus-visible {
  outline: 3px solid #22d3ee;
  outline-offset: -3px;
}

.location-control-button:disabled {
  cursor: wait;
  opacity: 0.7;
}

.location-control-button svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.location-control-button.is-locating svg {
  animation: location-pulse 1s ease-in-out infinite;
}

@keyframes location-pulse {
  50% { transform: scale(0.78); opacity: 0.55; }
}

.location-status {
  position: fixed;
  top: 54px;
  left: 50%;
  z-index: 3000;
  max-width: min(420px, calc(100% - 32px));
  padding: 8px 12px;
  transform: translateX(-50%);
  border: 1px solid #0e7490;
  border-radius: 7px;
  background: rgba(240, 253, 250, 0.96);
  color: #164e63;
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.25);
  font: 600 12px/1.3 "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  text-align: center;
  pointer-events: none;
}

.location-status.error {
  border-color: #b45309;
  background: rgba(255, 251, 235, 0.97);
  color: #78350f;
}

.location-status[hidden] {
  display: none;
}

.share-control {
  background: transparent;
}

.share-control-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--map-tool-size);
  height: var(--map-tool-size);
  padding: 0;
  border: 0;
  background: #ffffff;
  color: #0f172a;
  cursor: pointer;
  touch-action: manipulation;
}

.share-control-button svg,
.opacity-toggle svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.share-control-button:hover {
  background: #f1f5f9;
}

.share-control-button:focus-visible {
  outline: 3px solid #22d3ee;
  outline-offset: -3px;
}

.configuration-error {
  display: grid;
  gap: 8px;
  max-width: 560px;
  margin: 24px auto;
  padding: 18px;
  border: 1px solid #f59e0b;
  border-radius: 10px;
  background: #fffbeb;
  color: #78350f;
  font: 14px/1.45 "Segoe UI", Roboto, sans-serif;
}

.layer-status {
  position: fixed;
  top: 58px;
  left: 50%;
  z-index: 1600;
  display: flex;
  align-items: center;
  gap: 14px;
  width: min(560px, calc(100% - 28px));
  padding: 11px 12px 11px 14px;
  transform: translateX(-50%);
  border: 1px solid #f59e0b;
  border-radius: 9px;
  background: rgba(255, 251, 235, 0.97);
  color: #78350f;
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.25);
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.layer-status[hidden] {
  display: none;
}

.layer-status-copy {
  display: grid;
  flex: 1;
  gap: 2px;
  min-width: 0;
}

.layer-status-copy strong {
  font-size: 13px;
  line-height: 1.25;
}

.layer-status-copy span {
  color: #92400e;
  font-size: 12px;
  line-height: 1.35;
}

#layer-status-retry {
  flex: 0 0 auto;
  min-height: 34px;
  padding: 6px 12px;
  border: 1px solid #b45309;
  border-radius: 6px;
  background: #b45309;
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

#layer-status-retry:hover {
  background: #92400e;
}

#layer-status-retry:focus-visible {
  outline: 3px solid #0e7490;
  outline-offset: 2px;
}

.loading-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #06b6d4;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Custom Layer Control Styles */
.custom-layer-control {
  background: rgba(255, 255, 255, 0.95);
  padding: 12px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 13px;
  min-width: 180px;
}

/* Collapse toggle button */
.layer-control-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  cursor: pointer;
  user-select: none;
}

.layer-control-title {
  font-weight: 700;
  font-size: 12px;
  color: #0f172a;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.layer-control-toggle {
  background: #e2e8f0;
  border: none;
  border-radius: 4px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  margin-left: 8px;
  transition: background 0.15s;
}

.layer-control-toggle:hover {
  background: #cbd5e1;
}

.layer-control-toggle svg {
  transition: transform 0.25s ease;
  display: block;
}

/* Collapsed state */
.custom-layer-control.collapsed .layer-control-body {
  display: none;
}

.custom-layer-control.collapsed .layer-control-toggle svg {
  transform: rotate(180deg);
}

.custom-layer-control.collapsed {
  padding-bottom: 8px;
}

/* On mobile, collapse by default */
@media (max-width: 600px) {
  .custom-layer-control {
    min-width: 160px;
    font-size: 12px;
  }
}

.layer-group {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid #e2e8f0;
}

.layer-group:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.group-title {
  font-weight: 600;
  color: #0f172a;
  margin-bottom: 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.layer-option {
  display: flex;
  align-items: center;
  padding: 4px 0;
  cursor: pointer;
  color: #334155;
  transition: color 0.15s;
}

.layer-option:hover {
  color: #0f172a;
}

.layer-option input[type="radio"],
.layer-option input[type="checkbox"] {
  margin-right: 8px;
  cursor: pointer;
}

.layer-option.blend-mode {
  font-weight: 500;
  color: #059669;
  padding: 8px;
  background: #d1fae5;
  border-radius: 4px;
  margin-top: 4px;
}

.layer-option.blend-mode:hover {
  background: #a7f3d0;
}

.blend-mode-group {
  margin-top: 8px;
}

/* Opacity Slider Styles */
.opacity-slider-container {
  position: relative;
  width: var(--map-tool-size);
  height: var(--map-tool-size);
  background: transparent;
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.opacity-slider-container.collapsed {
  width: var(--map-tool-size);
  height: var(--map-tool-size);
}

.opacity-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--map-tool-size);
  height: var(--map-tool-size);
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--map-tool-ink);
  cursor: pointer;
  touch-action: manipulation;
}

.opacity-toggle:hover {
  background: var(--map-tool-hover);
}

.opacity-toggle:focus-visible {
  outline: 3px solid var(--map-tool-focus);
  outline-offset: -3px;
}

.opacity-slider-container.collapsed .opacity-controls {
  display: none;
}

.opacity-controls {
  position: absolute;
  top: 0;
  left: calc(100% + 12px);
  box-sizing: border-box;
  width: 224px;
  padding: 14px 16px 16px;
  border: 1px solid rgba(15, 23, 42, 0.16);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.24);
}

.opacity-label {
  font-size: 12px;
  font-weight: 600;
  color: #0f172a;
}

.range-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 7px;
}

.range-heading-spaced {
  margin-top: 10px;
}

.opacity-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: #e2e8f0;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.opacity-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #06b6d4;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
  transition: transform 0.15s;
}

.opacity-slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

.opacity-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #06b6d4;
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.opacity-value {
  font-size: 12px;
  color: #64748b;
  font-variant-numeric: tabular-nums;
}

.enhancement-reset-wrap {
  margin-top: 11px;
  text-align: center;
}

.enhancement-reset {
  padding: 4px 9px;
  border: 1px solid #94a3b8;
  border-radius: 5px;
  background: #f8fafc;
  color: #334155;
  font: 600 11px/1.2 "Segoe UI", sans-serif;
  cursor: pointer;
}

.enhancement-reset:hover {
  background: #e2e8f0;
}

.enhancement-reset:focus-visible,
.opacity-slider:focus-visible {
  outline: 3px solid #22d3ee;
  outline-offset: 2px;
}

/* Timeline control (bottom centre) */
.timeline-control {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  background: rgba(15, 23, 42, 0.88);
  border-radius: 10px;
  padding: 8px 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.35);
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  text-align: center;
  max-width: calc(100% - 24px);
}

.timeline-label {
  color: #cbd5e1;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.timeline-track {
  display: flex;
  gap: 6px;
  justify-content: center;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.timeline-chip {
  background: #1e293b;
  color: #e2e8f0;
  border: 1px solid #334155;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s;
}

.timeline-chip:hover {
  background: #334155;
}

.timeline-chip:focus-visible {
  outline: 3px solid #22d3ee;
  outline-offset: 2px;
}

.timeline-chip.active {
  background: #06b6d4;
  border-color: #06b6d4;
  color: #062024;
}

/* Four independent, synchronized historic map panes. */
.quadrant-view {
  position: absolute;
  inset: 0;
  z-index: 2000;
  padding: 2px;
  background: #0f172a;
}

.quadrant-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
  width: 100%;
  height: 100%;
  gap: 2px;
}

.quadrant-pane {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: #cbd5e1;
}

.quadrant-pane-map {
  position: absolute;
  inset: 0;
}

.quadrant-select-wrap {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 1000;
  max-width: calc(100% - 20px);
}

.quadrant-select {
  width: min(230px, 100%);
  min-height: 30px;
  padding: 4px 28px 4px 9px;
  border: 1px solid rgba(255,255,255,0.9);
  border-radius: 4px;
  background: rgba(15, 23, 42, 0.92);
  color: #f8fafc;
  box-shadow: 0 1px 5px rgba(0,0,0,0.32);
  font: 600 12px/1.2 "Segoe UI", sans-serif;
  cursor: pointer;
}

.quadrant-select:focus-visible,
.quadrant-exit:focus-visible {
  outline: 3px solid #22d3ee;
  outline-offset: 2px;
}

.quadrant-coverage-notice,
.quadrant-availability-notice {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 900;
  width: min(280px, calc(100% - 32px));
  transform: translate(-50%, -50%);
  padding: 12px 14px;
  border: 1px solid rgba(255,255,255,0.55);
  border-radius: 6px;
  background: rgba(15, 23, 42, 0.88);
  color: #f8fafc;
  box-shadow: 0 3px 14px rgba(0,0,0,0.28);
  font: 13px/1.35 "Segoe UI", sans-serif;
  text-align: center;
  pointer-events: none;
}

.quadrant-coverage-notice strong,
.quadrant-coverage-notice span,
.quadrant-availability-notice strong,
.quadrant-availability-notice span {
  display: block;
}

.quadrant-coverage-notice span,
.quadrant-availability-notice span {
  margin-top: 3px;
  color: #cbd5e1;
  font-size: 12px;
}

.quadrant-toolbar {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2001;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 5px 4px 10px;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 5px;
  background: rgba(15, 23, 42, 0.9);
  color: #e2e8f0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.28);
  font: 600 12px/1 "Segoe UI", sans-serif;
  white-space: nowrap;
}

.quadrant-exit {
  width: 24px;
  height: 24px;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: #334155;
  color: #f8fafc;
  font: 22px/20px sans-serif;
  cursor: pointer;
}

.quadrant-exit:hover {
  background: #475569;
}

.quadrant-toolbar .location-control-button {
  width: 28px;
  height: 28px;
  border-radius: 4px;
}

.quadrant-attribution {
  position: absolute;
  bottom: 3px;
  left: 50%;
  z-index: 2002;
  max-width: calc(100% - 12px);
  padding: 2px 7px;
  transform: translateX(-50%);
  overflow-x: auto;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.9);
  color: #334155;
  font: 10px/1.35 "Segoe UI", sans-serif;
  white-space: nowrap;
}

.quadrant-attribution a {
  color: #1d4ed8;
  text-decoration: none;
}

.quadrant-attribution a:hover {
  text-decoration: underline;
}

.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;
}

@media (max-width: 600px) {
  .timeline-control {
    bottom: 36px;
    padding: 6px 8px;
  }
  .timeline-chip {
    padding: 5px 9px;
    font-size: 12px;
  }
  .quadrant-select-wrap {
    top: 6px;
    left: 6px;
  }
  .quadrant-select {
    min-height: 27px;
    max-width: calc(100vw / 2 - 16px);
    padding-left: 6px;
    font-size: 11px;
  }
  .quadrant-toolbar {
    top: auto;
    right: 5px;
    bottom: 28px;
    font-size: 11px;
  }
  .quadrant-toolbar span {
    display: none;
  }
  /* keep the header on one line */
  #site-header {
    font-size: 14px;
  }
  #header-acknowledgement {
    display: none;
  }
      .leaflet-control-zoom a,
      .location-control-button,
      .share-control-button,
      .layer-control-toggle,
      .quadrant-toolbar .location-control-button,
      .quadrant-exit {
        min-width: 44px;
        min-height: 44px;
      }
      .leaflet-control-zoom a {
        line-height: 44px;
      }
      .timeline-chip {
        min-height: 44px;
        padding: 8px 12px;
      }
  }

/* Swipe compare divider */
.swipe-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 4px;
  margin-left: -2px;
  background: #ffffff;
  box-shadow: 0 0 6px rgba(0,0,0,0.5);
  z-index: 999;
  display: none;
  cursor: ew-resize;
}

.swipe-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #ffffff;
  color: #0f172a;
  font-size: 20px;
  line-height: 40px;
  text-align: center;
  box-shadow: 0 1px 6px rgba(0,0,0,0.5);
  cursor: ew-resize;
  user-select: none;
  touch-action: none;
}

.swipe-handle:focus-visible {
  outline: 3px solid #22d3ee;
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .loading-spinner {
    animation: none;
  }
  .layer-control-toggle svg,
  .timeline-chip,
  .opacity-toggle,
  #continue-btn {
    transition: none;
  }
}

/* Adjust Leaflet control positioning */
.leaflet-top.leaflet-right {
  margin-top: 8px;
  margin-right: 8px;
}

.leaflet-control-attribution {
  font-size: 11px;
  max-width: 400px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}