:root {
  color-scheme: light dark;

  --bg-surface-light: #f8fafc;
  --bg-surface-dark: #0f172a;
  --bg-panel-light: #ffffff;
  --bg-panel-dark: #1e293b;
  --bg-card-light: #f1f5f9;
  --bg-card-dark: #263349;
  --bg-card-hover-light: #e2e8f0;
  --bg-card-hover-dark: #334155;

  --text-primary-light: #0f172a;
  --text-primary-dark: #f8fafc;
  --text-secondary-light: #475569;
  --text-secondary-dark: #94a3b8;

  --border-light: #cbd5e1;
  --border-dark: #334155;

  --accent-light: #0284c7;
  --accent-dark: #38bdf8;

  --scrollbar-thumb-light: #94a3b8;
  --scrollbar-thumb-dark: #475569;
  --scrollbar-track-light: #f1f5f9;
  --scrollbar-track-dark: #1e293b;

  /* Default (light) fallback */
  --bg-surface: var(--bg-surface-light);
  --bg-panel: var(--bg-panel-light);
  --bg-card: var(--bg-card-light);
  --bg-card-hover: var(--bg-card-hover-light);
  --text-primary: var(--text-primary-light);
  --text-secondary: var(--text-secondary-light);
  --border-color: var(--border-light);
  --accent-color: var(--accent-light);
  --scrollbar-thumb: var(--scrollbar-thumb-light);
  --scrollbar-track: var(--scrollbar-track-light);

  /* Category colors */
  --cat-rmc: #ef4444;
  --cat-lid: #fb923c;
  --cat-battalion: #facc15;
  --cat-air: #60a5fa;
  --cat-naval: #22d3ee;
  --cat-facility: #a855f7;
  --cat-police: #3e6ec4;
  --cat-osm: #9ca3af;
  --cat-custom: #10b981;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-surface: var(--bg-surface-dark);
    --bg-panel: var(--bg-panel-dark);
    --bg-card: var(--bg-card-dark);
    --bg-card-hover: var(--bg-card-hover-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --border-color: var(--border-dark);
    --accent-color: var(--accent-dark);
    --scrollbar-thumb: var(--scrollbar-thumb-dark);
    --scrollbar-track: var(--scrollbar-track-dark);
  }
}

@supports (color: light-dark(white, black)) {
  :root {
    --bg-surface: light-dark(var(--bg-surface-light), var(--bg-surface-dark));
    --bg-panel: light-dark(var(--bg-panel-light), var(--bg-panel-dark));
    --bg-card: light-dark(var(--bg-card-light), var(--bg-card-dark));
    --bg-card-hover: light-dark(var(--bg-card-hover-light), var(--bg-card-hover-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));
    --border-color: light-dark(var(--border-light), var(--border-dark));
    --accent-color: light-dark(var(--accent-light), var(--accent-dark));
    --scrollbar-thumb: light-dark(var(--scrollbar-thumb-light), var(--scrollbar-thumb-dark));
    --scrollbar-track: light-dark(var(--scrollbar-track-light), var(--scrollbar-track-dark));
  }
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Padauk", "Pyidaungsu", "Noto Sans Myanmar", "Myanmar3", sans-serif;
  background-color: var(--bg-surface);
  color: var(--text-primary);
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Header */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 18px;
  background-color: var(--bg-panel);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
  flex-wrap: wrap;
}

.brand-group {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.brand-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-subtitle {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  background-color: var(--bg-card-hover);
}

.btn-primary {
  background-color: #0284c7;
  color: #ffffff;
  border-color: #0369a1;
}

.btn-primary:hover {
  background-color: #0369a1;
}

.btn-earth {
  background-color: #059669;
  color: #ffffff;
  border-color: #047857;
}

.btn-earth:hover {
  background-color: #047857;
}

.btn-danger {
  background-color: #dc2626;
  color: #ffffff;
  border-color: #b91c1c;
}

.btn-danger:hover {
  background-color: #b91c1c;
}

.btn-edit {
  background-color: #2563eb;
  color: #ffffff;
  border-color: #1d4ed8;
}

.btn-edit:hover {
  background-color: #1d4ed8;
}

/* Main Workspace */
.workspace {
  display: grid;
  grid-template-columns: 400px 1fr;
  flex: 1;
  min-height: 0;
}

/* Sidebar */
.sidebar {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-panel);
  border-right: 1px solid var(--border-color);
  min-height: 0;
}

.controls-box {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.search-input {
  width: 100%;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-size: 0.82rem;
}

.filter-section {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.filter-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 0 1px;
}

.filter-section-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.filter-bulk-actions {
  display: flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
}

.btn-bulk-select {
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.70rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  background-color: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.btn-bulk-select:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--accent-color);
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.pill {
  padding: 2.5px 7px;
  border-radius: 999px;
  font-size: 0.70rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: background-color 0.12s ease, color 0.12s ease, border-color 0.12s ease, opacity 0.12s ease;
}

.pill:hover {
  border-color: var(--accent-color);
  color: var(--text-primary);
}

.pill.active,
.pill[aria-pressed="true"] {
  background-color: var(--accent-color);
  color: #ffffff;
  border-color: transparent;
}

@media (prefers-color-scheme: dark) {
  .pill.active,
  .pill[aria-pressed="true"] {
    color: #0f172a;
  }
}

.stats-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font-size: 0.74rem;
  color: var(--text-secondary);
  padding: 1px 1px 0;
}

.btn-data-info {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.70rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-data-info:hover,
.btn-data-info[aria-expanded="true"] {
  background-color: var(--bg-card-hover);
  border-color: var(--accent-color);
  color: var(--accent-color);
}

/* Scrollable Base List */
.base-list {
  flex: 1;
  overflow-y: auto;
  padding: 5px 6px;
  display: flex;
  flex-direction: column;
  gap: 3px;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

@supports not (scrollbar-color: auto) {
  .base-list::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  .base-list::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
  }
  .base-list::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
  }
}

/* ==========================================
   Category Directory (Accordion File Tree)
   ========================================== */
.category-directory {
  border-radius: 6px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  flex-shrink: 0;
  transition: background-color 0.15s ease, border-color 0.15s ease;
  margin-bottom: 2px;
}

.category-directory:hover {
  border-color: var(--accent-color);
}

.category-directory[open] {
  border-color: var(--accent-color);
}

.category-dir-summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  min-height: 28px;
  cursor: pointer;
  user-select: none;
  font-weight: 600;
  font-size: 0.82rem;
  background-color: var(--bg-card);
  transition: background-color 0.15s ease;
}

.category-dir-summary::-webkit-details-marker {
  display: none;
}

.category-dir-summary:hover {
  background-color: var(--bg-card-hover);
}

.category-directory .dir-icon-open {
  display: none;
}

.category-directory .dir-icon-closed {
  display: inline-block;
  font-size: 0.90rem;
  line-height: 1;
}

.category-directory[open] .dir-icon-open {
  display: inline-block;
  font-size: 0.90rem;
  line-height: 1;
}

.category-directory[open] .dir-icon-closed {
  display: none;
}

.dir-badge {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dir-title {
  flex-grow: 1;
  color: var(--text-primary);
  font-size: 0.80rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dir-count {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-secondary);
  background-color: var(--bg-panel);
  padding: 1px 5px;
  border-radius: 9px;
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.dir-arrow {
  color: var(--text-secondary);
  font-size: 0.70rem;
  transition: transform 0.18s ease;
  margin-left: 1px;
  flex-shrink: 0;
}

.category-directory[open] > .category-dir-summary .dir-arrow {
  transform: rotate(90deg);
  color: var(--accent-color);
}

.category-directory[open] > .category-dir-summary {
  border-bottom: 1px solid var(--border-color);
}

.category-dir-content {
  padding: 3px 4px 5px;
  display: flex;
  flex-direction: column;
  gap: 2.5px;
  background-color: rgba(0, 0, 0, 0.04);
}

@media (prefers-color-scheme: dark) {
  .category-dir-content {
    background-color: rgba(0, 0, 0, 0.22);
  }
}

.btn-load-more-cat {
  margin-top: 3px;
  padding: 5px 8px;
  border-radius: 5px;
  border: 1px dashed var(--border-color);
  background-color: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s ease;
}

.btn-load-more-cat:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background-color: var(--bg-card-hover);
}

.base-card {
  border-radius: 5px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  flex-shrink: 0;
  transition: background-color 0.12s ease, border-color 0.12s ease;
}

.base-card:hover,
.base-card.selected,
.base-card[open] {
  background-color: var(--bg-card-hover);
  border-color: var(--accent-color);
}

.base-summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 7px;
  min-height: 25px;
  cursor: pointer;
  user-select: none;
}

.base-summary::-webkit-details-marker {
  display: none;
}

.base-summary::after {
  content: "▸";
  margin-left: auto;
  font-size: 0.72rem;
  color: var(--text-secondary);
  transition: transform 0.15s ease;
  flex-shrink: 0;
}

.base-card[open] > .base-summary {
  border-bottom: 1px solid var(--border-color);
}

.base-card[open] > .base-summary::after {
  transform: rotate(90deg);
  color: var(--accent-color);
}

.summary-cat-dot {
  width: 6.5px;
  height: 6.5px;
  border-radius: 50%;
  background-color: var(--dot-color, var(--accent-color));
  flex-shrink: 0;
}

.base-details-body {
  padding: 6px 8px 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.cat-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 3px;
  color: #ffffff;
  line-height: 1.3;
}

.cat-rmc { background-color: var(--cat-rmc); }
.cat-lid { background-color: var(--cat-lid); }
.cat-battalion { background-color: var(--cat-battalion); color: #0f172a; }
.cat-air { background-color: var(--cat-air); }
.cat-naval { background-color: var(--cat-naval); }
.cat-facility { background-color: var(--cat-facility); color: #ffffff; }
.cat-police { background-color: var(--cat-police); color: #ffffff; }
.cat-osm { background-color: var(--cat-osm); }
.cat-custom { background-color: var(--cat-custom); }

.coord-text {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.68rem;
  color: var(--text-secondary);
}

.base-name-primary {

  font-size: 0.79rem;
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-primary);
  word-break: break-word;
  letter-spacing: -0.01em;

  line-height: 1.4;
  word-break: break-word;
}

.base-name-en {
  font-size: 0.72rem;
  color: var(--text-secondary);
  line-height: 1.35;
  word-break: break-word;
}

.base-region {
  font-size: 0.72rem;
  color: var(--text-secondary);
  line-height: 1.35;
  word-break: break-word;
}

.base-desc {
  font-size: 12px;
  line-height: 1.52;
  color: var(--text-primary);
  word-break: break-word;
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
  flex-wrap: wrap;
}

.btn-sm {
  padding: 4px 9px;
  font-size: 0.74rem;
}

/* Map Area */
.leaflet-popup-content-wrapper {
  border-radius: 10px;
}

.leaflet-popup-content {
  min-width: 280px;
  max-width: 330px;
  margin: 12px 14px;
}

.map-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
}

#map,
#gmap {
  width: 100%;
  height: 100%;
}

.hidden-map {
  display: none !important;
}

.status-dot {
  font-size: 0.7rem;
  padding: 1px 6px;
  border-radius: 999px;
  background-color: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.status-dot.active {
  background-color: #10b981;
  color: #ffffff;
  border-color: #059669;
}

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

.status-dot.pending {
  background-color: #f59e0b;
  color: #ffffff;
  border-color: #d97706;
}

.data-info-popover {
  margin: 0;
  inset: auto;
  position: fixed;
  top: 190px;
  left: 12px;
  width: min(376px, calc(100vw - 24px));
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-panel);
  color: var(--text-primary);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.38);
  z-index: 2500;
}

[popover].data-info-popover:is(:popover-open, .\:popover-open) {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.data-info-popover::backdrop {
  background: transparent;
  pointer-events: none;
}

.data-info-popover.is-pinned::backdrop {
  background-color: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(1.5px);
  pointer-events: auto;
}

.data-info-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
}

.data-info-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

.btn-close-info {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1;
  padding: 4px 6px;
  border-radius: 4px;
  cursor: pointer;
}

.btn-close-info:hover {
  background-color: var(--bg-card-hover);
  color: var(--text-primary);
}

.data-info-guide {
  font-size: 0.76rem;
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-card);
  border-left: 3px solid var(--accent-color);
  padding: 7px 10px;
  border-radius: 4px;
}

.data-status {
  font-size: 0.75rem;
  line-height: 1.65;
  color: var(--text-secondary);
  white-space: pre-line;
  padding: 2px 0 0;
}

.dialog-help {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.checkbox-row {
  flex-direction: row !important;
  align-items: center;
  gap: 8px !important;
  cursor: pointer;
}

.ai-analysis-body {
  font-size: 0.88rem;
  line-height: 1.65;
  max-height: 60vh;
  overflow-y: auto;
  padding: 14px 16px;
  border-radius: 6px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ai-analysis-body h3,
.ai-analysis-body h4 {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--accent-color);
  margin-top: 4px;
}

.ai-analysis-body p {
  margin: 0;
}

.ai-analysis-body hr {
  border: 0;
  border-top: 1px solid var(--border-color);
  margin: 4px 0;
}

.ai-analysis-body ul,
.ai-analysis-body ol {
  padding-left: 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.ai-analysis-body ul ul,
.ai-analysis-body ol ul {
  margin-top: 4px;
}

.ai-analysis-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.82em;
  padding: 1px 5px;
  border-radius: 4px;
  background-color: var(--bg-card);
}

.btn-ai {
  background-color: #7c3aed;
  color: #ffffff;
  border-color: #6d28d9;
}

.btn-ai:hover {
  background-color: #6d28d9;
}

.map-overlay-legend {
  position: absolute;
  bottom: 24px;
  left: 12px;
  z-index: 900;
  background-color: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 0.75rem;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

.legend-pin {
  flex-shrink: 0;
  display: inline-block;
  vertical-align: middle;
  filter: drop-shadow(0 1px 1.5px rgba(0, 0, 0, 0.35));
}

/* Custom Google Maps Pin Marker (GPU-cached <img> via L.icon)
   NOTE: Never apply CSS `scale` or `transform-origin` on `.leaflet-marker-icon` itself,
   because CSS individual `scale` is multiplied BEFORE Leaflet's inline
   `transform: translate3d(Xpx, Ypx, 0px)`, which scales the X/Y map offset! */
.gmap-pin-icon {
  background: transparent;
  border: none;
  transition: opacity 0.12s ease, filter 0.12s ease;
}

.gmap-pin-icon:hover {
  opacity: 1;
  filter: brightness(1.12) drop-shadow(0 2px 5px rgba(0, 0, 0, 0.55));
}

.gmap-pin-icon.is-osm {
  opacity: 0.85;
}

.gmap-pin-icon.is-osm:hover {
  opacity: 1;
}

.gmap-pin-icon.is-police {
  opacity: 0.92;
}

.gmap-pin-icon.is-police:hover {
  opacity: 1;
}

.gmap-pin-icon.is-selected {
  opacity: 1;
  filter: drop-shadow(0 3px 7px rgba(0, 0, 0, 0.65));
}

/* Zoom-dependent Base Name Labels on Map */
.leaflet-tooltip.base-map-label {
  background: rgba(15, 23, 42, 0.78);
  color: #f8fafc;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.45);
  pointer-events: none;
  display: none;
}

.leaflet-tooltip.base-map-label::before {
  display: none;
}

#map.zoom-show-major-labels .leaflet-tooltip.base-map-label.is-major-label {
  display: block;
}

#map.zoom-show-minor-labels .leaflet-tooltip.base-map-label.is-minor-label {
  display: block;
}

/* Dialog */
dialog {
  margin: auto;
  padding: 20px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-panel);
  color: var(--text-primary);
  width: min(460px, 92vw);
}

dialog:modal {
  overscroll-behavior: contain;
}

dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
  overflow: hidden;
  overscroll-behavior: contain;
}

.dialog-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.form-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.8rem;
}

.form-field input,
.form-field select,
.form-field textarea {
  padding: 7px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-size: 0.85rem;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 14px;
}

/* Mobile Drawer & Hamburger Styling */
.mobile-nav-buttons {
  display: none;
}

.mobile-only {
  display: none;
}

.drawer-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
  z-index: 2000;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.drawer-backdrop.is-active {
  display: block;
  opacity: 1;
}

.drawer-header {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-panel);
}

.drawer-title {
  font-size: 0.95rem;
  font-weight: 700;
}

.btn-close-drawer {
  background: transparent;
  border: none;
  font-size: 1.3rem;
  line-height: 1;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
}

.btn-close-drawer:hover {
  color: var(--text-primary);
  background-color: var(--bg-card);
}

/* Responsive Breakpoint for Mobile (max-width: 860px) */
@media (max-width: 860px) {
  .app-header {
    padding: 8px 12px;
    flex-wrap: nowrap;
    gap: 8px;
  }

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

  .brand-title {
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 175px;
  }

  .brand-subtitle {
    display: none;
  }

  .mobile-nav-buttons {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
  }

  .btn-mobile-nav {
    padding: 6px 10px;
    font-size: 0.78rem;
    font-weight: 600;
    white-space: nowrap;
  }

  .mobile-only {
    display: flex;
  }

  /* Workspace & Fullscreen Map */
  .workspace {
    display: block;
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
  }

  .map-wrapper {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
  }

  /* Hamburger Menu Drawer (Header Actions) */
  .header-actions {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 85vw);
    height: 100dvh;
    background-color: var(--bg-panel);
    border-left: 1px solid var(--border-color);
    box-shadow: -6px 0 24px rgba(0, 0, 0, 0.45);
    z-index: 2100;
    display: flex;
    flex-direction: column;
    padding: 0 0 24px 0;
    gap: 10px;
    overflow-y: auto;
    transform: translateX(105%);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .header-actions.is-open {
    transform: translateX(0);
  }

  .header-actions .btn {
    width: calc(100% - 24px);
    margin: 0 12px;
    justify-content: flex-start;
    padding: 10px 14px;
    font-size: 0.88rem;
  }

  /* Sidebar Drawer (Base List & Search) */
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: min(390px, 92vw);
    height: 100dvh;
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    box-shadow: 6px 0 24px rgba(0, 0, 0, 0.45);
    z-index: 2100;
    transform: translateX(-105%);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .sidebar.is-open {
    transform: translateX(0);
  }

  /* Map overlay legend on mobile */
  .map-overlay-legend {
    bottom: 12px;
    left: 8px;
    right: 8px;
    padding: 6px 10px;
    font-size: 0.68rem;
    gap: 6px;
    max-height: 72px;
    overflow-y: auto;
  }
}


/* Language Switcher */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  overflow: hidden;
}
.lang-btn {
  background: transparent;
  color: #94a3b8;
  border: none;
  padding: 5px 12px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}
.lang-btn:hover {
  color: #f8fafc;
  background: rgba(255, 255, 255, 0.06);
}
.lang-btn.active {
  color: #ffffff;
  background: #2563eb;
}