:root {
  --bg: #0f1115;
  --bg-alt: #161a21;
  --bg-card: #1b1f27;
  --text: #eaecef;
  --text-muted: #9aa0aa;
  --border: #2a2f3a;
  --accent: #5b8cff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.page-header {
  padding: 0.85rem 1.5rem 0.6rem;
  text-align: center;
  position: relative;
}

.back-link {
  display: inline-block;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  margin-bottom: 0.4rem;
  transition: color 0.2s ease;
}

.back-link:hover {
  color: var(--accent);
}

/* Absolutely positioned so it doesn't add a line to a header that's kept to
   one line on purpose (see .page-intro below) — sits at the same vertical
   spot as .back-link, just pinned to the opposite corner. */
.source-link {
  position: absolute;
  top: 0.85rem;
  right: 1.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  transition: color 0.2s ease;
}

.source-link:hover {
  color: var(--accent);
}

.source-link svg {
  width: 14px;
  height: 14px;
}

.page-header h1 {
  margin: 0 0 0.2rem;
  font-size: 1.6rem;
}

.page-header p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* One line on a normal screen, and capped so it stays short if the copy grows:
   this header sits directly above the map, and every line here pushes the map
   below the fold. The hiking story proper lives in the Projects card instead. */
.page-header .page-intro {
  max-width: 62ch;
  margin: 0.3rem auto 0;
}

.page-header .last-outing {
  margin-top: 0.45rem;
}

.last-outing:empty {
  display: none;
}

.last-outing strong {
  color: var(--accent);
  font-weight: 600;
}

/* Stats bar — a light inline row of numbers, not a boxed panel competing
   with the title and view toggle for attention. */
.stats-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  width: fit-content;
  max-width: calc(100% - 3rem);
  margin: 0 auto 0.85rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.1rem;
  padding: 0.55rem 1.1rem;
  border-right: 1px solid var(--border);
}

.stat:last-child {
  border-right: none;
}

.stat-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

/* View toggle */
.view-toggle {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.view-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 999px;
  padding: 0.4rem 1.2rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.view-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #0f1115;
}

/* Filters bar — a light inline row (hairline top/bottom, no boxed
   background) like the stats bar above it, instead of a persistent
   280px sidebar column that ate horizontal space next to the map/list. */
.filters-bar {
  position: relative;
  z-index: 2000;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1.2rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* Layout — fills whatever vertical space is left below the header/stats/toggle,
   instead of a fixed vh that gets pushed below the fold on shorter viewports. */
.layout {
  display: flex;
  flex: 1;
  min-height: 420px;
}

/* content-pane fills .layout via flex-grow (not height:100%) on purpose —
   a percentage height chained through several nested flex containers with
   no explicit `height` (only flex-grow) can resolve to 0 in real browsers,
   even though the box visibly has room. flex-grow doesn't have that
   ambiguity, so every level below uses it instead of a % height. */
.content-pane {
  display: flex;
  flex-direction: column;
  position: relative;
  flex: 1;
  min-width: 0;
}

.map-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
  width: 100%;
  background: var(--bg);
}

.list-view {
  flex: 1;
  min-height: 0;
  width: 100%;
  overflow-y: auto;
  background: var(--bg);
}

.list-toolbar {
  position: sticky;
  top: 0;
  z-index: 2;
  height: 44px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 1.2rem;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.list-toolbar .filter-label {
  margin: 0;
}

#map {
  height: 100%;
  width: 100%;
  background: var(--bg);
}

/* Recolor the (light) OpenStreetMap tiles to match the dark theme,
   desaturated so it reads as an extension of the app's palette rather
   than a patchwork of inverted hues. Filter is on each tile image, not
   the tile pane itself — the pane is what Leaflet CSS-transforms during
   zoom, and filtering a transformed element there renders it black
   mid-animation (a known Leaflet + CSS filter interaction). Filtering the
   (untransformed) images instead keeps the zoom animation smooth. */
#map .leaflet-tile-pane img.leaflet-tile {
  filter: invert(1) hue-rotate(200deg) brightness(0.92) contrast(0.85) saturate(0.45);
}

/* Soft vignette to ease the transition from the flat UI chrome into the
   textured map, instead of a hard color cut at the top edge. */
.map-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  box-shadow: inset 0 28px 24px -22px rgba(0, 0, 0, 0.75);
}

/* Timeline toggle — reveals the history scrubber on demand instead of
   permanently occupying the map on load. */
.timeline-toggle {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 1500;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.75rem;
  background: rgba(22, 26, 33, 0.9);
  border: 1px solid var(--border);
  border-radius: 999px;
  backdrop-filter: blur(4px);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.timeline-toggle:hover {
  border-color: var(--accent);
  color: var(--text);
}

.timeline-toggle.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #0f1115;
}

/* Timeline scrubber — replays the hiking history chronologically.
   Hidden until the toggle above is pressed. */
.timeline-bar {
  position: absolute;
  left: 16px;
  right: 66px;
  bottom: 16px;
  z-index: 1500;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.4rem 0.9rem;
  background: rgba(22, 26, 33, 0.9);
  border: 1px solid var(--border);
  border-radius: 999px;
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}

.timeline-bar.open {
  opacity: 1;
  visibility: visible;
  transform: none;
  pointer-events: auto;
}

.timeline-play {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: #0f1115;
  font-size: 0.7rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-track {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
}

.timeline-slider {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Year ticks — sit just under the slider track so they never interfere
   with dragging the thumb, filled in as the cutoff date reaches them. */
.timeline-ticks {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 1px;
  height: 8px;
  pointer-events: none;
}

.timeline-tick {
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  padding: 0;
  border: none;
  border-radius: 2px;
  background: var(--border);
  cursor: pointer;
  pointer-events: auto;
  transition: background 0.2s ease, transform 0.15s ease;
}

.timeline-tick:hover {
  transform: translateX(-50%) scaleY(1.3);
}

.timeline-tick.reached {
  background: var(--accent);
}

.timeline-label {
  flex-shrink: 0;
  min-width: 72px;
  text-align: right;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  .timeline-bar {
    transition: none;
  }
}

/* Search */
.search-input {
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.85rem;
  width: 160px;
}

.search-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* Filter section labels */
.filter-label {
  margin: 0.2rem 1rem 0.4rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  opacity: 0.75;
}

/* Filter chips */
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}

.chip {
  --chip-color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 999px;
  padding: 0.28rem 0.7rem;
  font-size: 0.72rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

/* Always tinted in its type's color, active or not — this is the legend:
   the icon is what tells you "brown = peak," so it can't gray out just
   because the filter happens to be off right now. */
.chip-icon {
  display: inline-flex;
  color: var(--chip-color);
}

/* A soft tint, not a solid fill — four saturated pills side by side (one
   per type) reads as loud/candy-like against the site's otherwise
   restrained dark-plus-one-accent palette. */
.chip.active {
  background: color-mix(in srgb, var(--chip-color) 18%, transparent);
  border-color: var(--chip-color);
  color: var(--text);
  font-weight: 600;
}

.sort-toggle {
  display: flex;
  gap: 0.5rem;
}

/* Range dropdown — a <details> popover instead of a permanently-visible
   column, so the range checklist only takes space while open. */
.range-dropdown {
  position: relative;
}

.range-dropdown summary {
  list-style: none;
  cursor: pointer;
}

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

.range-dropdown summary::after {
  content: "";
  display: inline-block;
  margin-left: 0.4rem;
  border: solid currentColor;
  border-width: 0 1.5px 1.5px 0;
  padding: 2px;
  transform: rotate(45deg);
  opacity: 0.7;
}

.range-dropdown[open] summary::after {
  transform: rotate(-135deg);
}

/* Range list — same soft-tint chip style as the Type filter next to it,
   instead of a checkbox checklist that read as a different, heavier UI
   pattern bolted onto the site. Wraps freely instead of a fixed 2-column
   grid, with a height cap so 8+ ranges can't push the page too tall. */
.range-list {
  position: absolute;
  top: calc(100% + 0.4rem);
  left: 0;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0.7rem;
  max-height: 220px;
  width: 280px;
  overflow-y: auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.range-group-label {
  flex-basis: 100%;
  margin: 0.4rem 0 0.1rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  opacity: 0.6;
}

/* Peak table (list view) */
.peak-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.peak-table thead th {
  position: sticky;
  top: 44px;
  height: 34px;
  box-sizing: border-box;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  padding: 0.7rem 1.2rem;
  text-align: left;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  z-index: 1;
}

.peak-table td {
  padding: 0.7rem 1.2rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.peak-row {
  cursor: pointer;
}

.peak-row:hover {
  background: var(--bg-card);
}

.peak-row.active {
  background: var(--bg-card);
  box-shadow: inset 3px 0 0 var(--accent);
}

.peak-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 0.6rem;
  flex-shrink: 0;
}

.visit-count {
  color: var(--text-muted);
  font-size: 0.78rem;
}

.year-row td {
  position: sticky;
  top: 78px;
  z-index: 1;
  background: var(--bg-alt);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.4rem 1.2rem;
}

/* Leaflet overrides */
.loc-marker {
  background: transparent;
  border: none;
}

.leaflet-popup-content-wrapper {
  background: var(--bg-card);
  color: var(--text);
  border-radius: 8px;
}

.leaflet-popup-tip {
  background: var(--bg-card);
}

.popup strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 0.15rem;
}

.popup-range {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.elevation-bar {
  height: 5px;
  background: var(--border);
  border-radius: 999px;
  margin: 0.5rem 0 0.3rem;
  overflow: hidden;
}

.elevation-bar-fill {
  height: 100%;
}

.popup-elevation {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.popup-status {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
}

.popup-note {
  margin: 0.4rem 0 0;
  font-size: 0.8rem;
  font-style: italic;
  color: var(--text-muted);
}

/* Trend charts — plain SVG bar charts, no charting library, matching the
   dark theme and the marker colors already used on the map. */
.charts-section {
  padding: 2.2rem 1.5rem 3rem;
  border-top: 1px solid var(--border);
}

.charts-section h2 {
  text-align: center;
  margin: 0 0 0.25rem;
  font-size: 1.3rem;
}

.charts-section > p {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0 0 1.75rem;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  max-width: 1100px;
  margin: 0 auto;
}

.chart-card {
  --chart-color: var(--accent);
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.15rem 1.15rem 0.85rem;
  overflow: hidden;
}

.chart-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--chart-color);
  opacity: 0.85;
}

.chart-title {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.3rem;
  font-size: 0.85rem;
  font-weight: 700;
}

.chart-title-icon {
  display: inline-flex;
  flex-shrink: 0;
  color: var(--chart-color);
}

.chart-caption {
  margin: 0 0 0.7rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  min-height: 1.1em;
}

.chart-caption strong {
  color: var(--text);
  font-weight: 700;
}

.chart-svg {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
}

.chart-grid {
  stroke: var(--border);
  stroke-width: 1;
}

.chart-axis-label {
  fill: var(--text-muted);
  font-size: 8px;
}

.chart-value-label {
  fill: var(--text-muted);
  font-size: 8px;
  font-variant-numeric: tabular-nums;
}

.chart-bar {
  cursor: pointer;
  transition: opacity 0.15s ease, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.chart-bar:hover {
  opacity: 0.75;
}

.chart-bar-vertical {
  transform-box: fill-box;
  transform-origin: bottom;
}

.chart-bar-horizontal {
  transform-box: fill-box;
  transform-origin: left;
}

.chart-bar-enter {
  transform: scaleY(0);
}

.chart-bar-horizontal.chart-bar-enter {
  transform: scaleX(0);
}

@media (prefers-reduced-motion: reduce) {
  .chart-bar {
    transition: opacity 0.15s ease;
  }
}

.chart-tooltip {
  position: fixed;
  pointer-events: none;
  z-index: 3000;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.3rem 0.6rem;
  font-size: 0.75rem;
  color: var(--text);
  opacity: 0;
  transform: translateY(2px);
  transition: opacity 0.12s ease;
  white-space: nowrap;
}

.chart-tooltip.visible {
  opacity: 1;
}

/* Responsive */
@media (max-width: 700px) {
  .layout {
    flex: none;
    height: 55vh;
  }

  .filters-bar {
    justify-content: center;
  }

  .search-input {
    width: 100%;
  }

  .range-list {
    left: 50%;
    transform: translateX(-50%);
    width: min(280px, calc(100vw - 2.4rem));
  }

  .peak-table td,
  .peak-table thead th {
    padding: 0.6rem 0.8rem;
  }
}