:root {
  color-scheme: dark;
  --bg: #0b1220;
  --panel: rgba(255, 255, 255, 0.06);
  --panelSolid: #121a2a;
  --text: #e8eef5;
  --muted: rgba(232, 238, 245, 0.72);
  --accent: #4aa3ff;
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  --radius: 12px;
}

html[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f8fb;
  --panel: rgba(18, 26, 42, 0.06);
  --panelSolid: #ffffff;
  --text: #0b1220;
  --muted: rgba(11, 18, 32, 0.65);
  --accent: #2563eb;
  --border: rgba(11, 18, 32, 0.12);
  --shadow: 0 14px 40px rgba(11, 18, 32, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--border);
  background: var(--panelSolid);
  backdrop-filter: blur(10px);
}

.topbar h1 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: 0.01em;
}

.topbar .sub {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.topbar-left {
  min-width: 0;
}

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

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0);
  color: var(--text);
  cursor: pointer;
  user-select: none;
}

.icon-btn:hover {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
}

.icon-btn:active {
  transform: translateY(1px);
}

.icon-btn .bi {
  font-size: 1.1rem;
  line-height: 1;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
  min-height: calc(100vh - 60px);
}

/* When there is no story.json, use full-width map. */
body.no-story .layout {
  grid-template-columns: 1fr;
}

body.no-story .map-panel {
  border-right: none;
}

body.no-story .side-panel {
  display: none;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(42vh, 1fr) auto;
  }
}

.map-panel {
  position: relative;
  min-height: 0;
  border-right: 1px solid var(--border);
}

@media (max-width: 900px) {
  .map-panel {
    border-right: none;
    border-bottom: 1px solid var(--border);
    min-height: 42vh;
  }
}

.side-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  max-height: calc(100vh - 60px);
  background: var(--bg);
}

@media (max-width: 900px) {
  .side-panel {
    max-height: none;
    border-top: 1px solid var(--border);
    min-height: 120px;
  }
}

.side-nav {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  padding: 0.75rem 1rem;
}

.story-viewer {
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in oklab, var(--panelSolid) 88%, transparent);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.story-viewer-head {
  padding: 0.7rem 0.85rem 0.55rem;
  border-bottom: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel) 55%, transparent);
}

.story-viewer-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 650;
  color: var(--text);
}

.story-viewer-meta {
  margin-top: 0.25rem;
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.story-viewer-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 0.75rem 0.85rem;
}

.story-viewer-text {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
  white-space: pre-wrap;
}

.story-viewer-foot {
  display: flex;
  gap: 0.6rem;
  justify-content: space-between;
  padding: 0.6rem 0.75rem;
  border-top: 1px solid var(--border);
  background: color-mix(in oklab, var(--panel) 55%, transparent);
}

.story-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.38rem 0.6rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
}

.story-nav-btn:hover:not(:disabled) {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
}

.story-nav-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.story-nav-btn .bi {
  font-size: 0.95rem;
  line-height: 1;
  opacity: 0.95;
}

.legend-panel.map-legend {
  display: none;
  position: absolute;
  right: 10px;
  bottom: 64px;
  z-index: 1000;
  width: min(280px, calc(100% - 20px));
  max-height: min(42vh, 320px);
  min-height: 0;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panelSolid);
  box-shadow: var(--shadow);
  overflow: hidden;
  flex-direction: column;
  pointer-events: auto;
}

@media (max-width: 900px) {
  .legend-panel.map-legend {
    bottom: 50px;
    max-height: min(36vh, 260px);
    width: min(260px, calc(100% - 16px));
    right: 8px;
  }
}

.legend-toggle-wrap {
  position: absolute;
  right: 10px;
  bottom: 25px;
  z-index: 1001;
  pointer-events: auto;
}

@media (max-width: 900px) {
  .legend-toggle-wrap {
    right: 8px;
    bottom: 8px;
  }
}

.legend-menu-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.55rem 0.35rem 0.4rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panelSolid);
  color: var(--text);
  box-shadow: var(--shadow);
  cursor: pointer;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
}

.legend-menu-btn:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}

.legend-menu-icon.bi {
  font-size: 1rem;
  line-height: 1;
  opacity: 0.92;
}

.legend-menu-label {
  padding-right: 0.1rem;
}

.legend-panel {
  /* base legend typography; map-legend adds positioning */
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.legend-heading {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0 0 0.4rem;
  font-size: 0.8rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.legend-heading .bi {
  font-size: 0.95rem;
  opacity: 0.88;
}

.legend-content {
  overflow-y: auto;
  flex: 1;
  min-height: 0;
  font-size: 0.85rem;
}

.legend-layer-name {
  margin: 0.6rem 0 0.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.legend-layer-name:first-child {
  margin-top: 0;
}

.legend-items {
  margin: 0 0 0.35rem;
  padding: 0;
  list-style: none;
}

.legend-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.25rem;
  color: var(--muted);
}

.legend-row--ramp {
  align-items: stretch;
  margin-top: 0.15rem;
  align-self: flex-start;
}

.legend-ramp {
  display: inline-flex;
  flex-direction: row;
  align-items: stretch;
  gap: 0.35rem;
  width: max-content;
  max-width: 100%;
}

.legend-ramp-bar {
  width: 26px;
  min-height: min(160px, 38vh);
  flex: 0 0 26px;
  border-radius: 3px;
  box-sizing: border-box;
}

.legend-ramp-labels {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex: 0 0 auto;
  width: max-content;
  min-height: min(160px, 38vh);
  padding: 1px 0 2px;
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
  color: var(--text);
}

.legend-ramp-value {
  text-align: right;
  align-self: flex-end;
  white-space: nowrap;
}

.legend-ramp-value--max {
  color: var(--text);
}

.legend-ramp-value--min {
  color: var(--muted);
}

.legend-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  object-fit: contain;
  border-radius: 3px;
  background: var(--panel);
}

.legend-swatch {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  border-radius: 3px;
  border: 1px solid color-mix(in oklab, var(--border) 65%, transparent);
  background: transparent;
  position: relative;
  overflow: hidden;
}

.legend-mark-stack {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.legend-mark-stack svg {
  width: 22px;
  height: 22px;
  display: block;
}

.legend-swatch-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  object-fit: contain;
  border-radius: 3px;
  border: 1px solid color-mix(in oklab, var(--border) 65%, transparent);
  background: var(--panel);
}

.legend-swatch-line {
  position: absolute;
  left: 3px;
  right: 3px;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 999px;
}

.legend-icon-spacer {
  display: inline-block;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.legend-label {
  color: var(--text);
}

.legend-note {
  font-size: 0.78rem;
  color: var(--muted);
}

#map {
  position: absolute;
  inset: 0;
}

.basemap-switcher {
  position: absolute;
  left: 10px;
  bottom: 10px;
  z-index: 1000;
}

.basemap-menu-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.5rem 0.35rem 0.35rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panelSolid);
  color: var(--text);
  box-shadow: var(--shadow);
  cursor: pointer;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
}

.basemap-menu-btn:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}

.basemap-menu-thumb-wrap {
  display: block;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.basemap-menu-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.basemap-menu-label {
  padding-right: 0.15rem;
}

.basemap-menu-chevron.bi {
  font-size: 0.7rem;
  color: var(--muted);
  margin-left: -0.05rem;
}

.basemap-options {
  position: absolute;
  left: 0;
  bottom: calc(100% + 8px);
  display: flex;
  flex-direction: row;
  gap: 8px;
  padding: 8px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--panelSolid);
  box-shadow: var(--shadow);
}

.basemap-options[hidden] {
  display: none !important;
}

.basemap-option {
  display: block;
  padding: 0;
  margin: 0;
  border: 2px solid transparent;
  border-radius: 10px;
  background: none;
  cursor: pointer;
  line-height: 0;
}

.basemap-option:hover {
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
}

.basemap-option.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 40%, transparent);
}

.basemap-option-thumb {
  display: block;
  width: 64px;
  height: 64px;
  border-radius: 8px;
  overflow: hidden;
}

.basemap-option-thumb img {
  width: 64px;
  height: 64px;
  object-fit: cover;
  display: block;
}

.layer-control-root {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 1000;
  max-width: min(280px, calc(100vw - 24px));
  font-size: 0.875rem;
}

.layer-control-root[hidden] {
  display: none !important;
}

.layer-control-inner {
  background: var(--panelSolid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.layer-control-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.45rem 0.6rem;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.layer-control-title {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin: 0;
  font-size: 0.72rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.layer-control-title .bi {
  font-size: 0.95em;
  opacity: 0.9;
}

.layer-control-toggle-all {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font: inherit;
  font-size: 0.7rem;
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--accent);
  cursor: pointer;
}

.layer-control-toggle-all .bi {
  font-size: 0.85rem;
  line-height: 1;
  opacity: 0.95;
}

.layer-control-toggle-all:hover {
  border-color: var(--accent);
}

.layer-control-list {
  list-style: none;
  margin: 0;
  padding: 0.35rem 0.5rem;
  max-height: min(40vh, 220px);
  overflow-y: auto;
}

.layer-control-row {
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
  padding: 0.35rem 0.15rem;
  border-radius: 6px;
}

.layer-control-row:hover {
  background: var(--panel);
}

.layer-control-row input {
  margin-top: 0.2rem;
  flex-shrink: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.layer-control-row label {
  flex: 1;
  min-width: 0;
  cursor: pointer;
  line-height: 1.35;
  color: var(--text);
  word-break: break-word;
}

.layer-control-type {
  display: block;
  font-size: 0.68rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 0.1rem;
}

.leaflet-container {
  font-family: inherit;
}

.app-loader {
  position: fixed;
  inset: 0;
  z-index: 5000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: color-mix(in srgb, var(--bg) 82%, black);
  transition: opacity 220ms ease, visibility 220ms ease;
}

.app-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.app-loader-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  padding: 2rem 2.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--panelSolid);
  box-shadow: var(--shadow);
}

.app-loader-spinner {
  width: 56px;
  height: 56px;
  border-radius: 999px;
  border: 4px solid color-mix(in srgb, var(--muted) 30%, transparent);
  border-top-color: var(--accent);
  animation: spin 0.85s linear infinite;
  flex-shrink: 0;
}

.app-loader-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

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