/* Palette mirrors the mountains project (Tailwind slate + blue-600). */
:root {
  --glass: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.6);
  --ink: #0f172a;        /* slate-900 */
  --ink-2: #1e293b;      /* slate-800 */
  --ink-3: #334155;      /* slate-700 */
  --muted-ink: #5b6a7e;
  --badge: #64748b;      /* slate-500 */
  --rule: rgba(226, 232, 240, 0.4);
  --hover: rgba(15, 23, 42, 0.08);
  --fill: rgba(0, 0, 0, 0.05);
  --raised: #fff;                      /* focused search, active toggle, checked chip */
  --fill-strong: rgba(0, 0, 0, 0.09);  /* hovered grey buttons */
  --switch-off: rgba(0, 0, 0, 0.12);
  --divider: rgba(15, 23, 42, 0.1);
  --sheet-glass: rgba(255, 255, 255, 0.85);
  --dot-ring: rgba(255, 255, 255, 0.9);
  --body-ink: #475569;                 /* card description text */
  --section-rule: rgba(226, 232, 240, 0.6);
  --placeholder: #f1f5f9;              /* card photo while loading */
  --link: var(--blue);
  --blue: #2563eb;
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --ease-ios: cubic-bezier(0.32, 0.72, 0, 1);

  /* token warning (dark) */
  --panel: #26221d;
  --panel-2: #2f2a23;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  font-family: "Inter", ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  -webkit-font-smoothing: antialiased;
  color: var(--ink);
  background: #f8fafc;
  /* Full-screen map app: the page never scrolls, only the list does. */
  overflow: hidden;
  overscroll-behavior: none;
}

/* ---- Map ---- */
#map { position: absolute; inset: 0; }

/* ---- Dark glass panels over the light map ----
 * The sidebar, the building card and the map key redefine the colour tokens. */
#sidebar,
#detail,
#map-legend {
  --glass: rgba(24, 24, 27, 0.9);
  --glass-border: rgba(255, 255, 255, 0.08);
  --ink: #f4f4f5;
  --ink-2: #e4e4e7;
  --ink-3: #d4d4d8;
  --muted-ink: #a1a1aa;
  --badge: #71717a;
  --rule: rgba(255, 255, 255, 0.06);
  --hover: rgba(255, 255, 255, 0.06);
  --fill: rgba(255, 255, 255, 0.08);
  --raised: rgba(255, 255, 255, 0.14);
  --fill-strong: rgba(255, 255, 255, 0.14);
  --switch-off: rgba(255, 255, 255, 0.2);
  --divider: rgba(255, 255, 255, 0.1);
  --sheet-glass: rgba(24, 24, 27, 0.9);
  --dot-ring: rgba(0, 0, 0, 0.3);
  --body-ink: #d4d4d8;
  --section-rule: rgba(255, 255, 255, 0.08);
  --placeholder: #27272a;
  --link: #60a5fa;
  color-scheme: dark;   /* native bits (search clear button) go dark too */
}

/* ---- Floating glass panel ---- */
#sidebar {
  position: absolute;
  top: 12px;
  left: 12px;
  bottom: 12px;
  width: 18rem;
  z-index: 10;
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  border-radius: 28px;   /* replaced by a squircle clip-path in squircle.js */
  box-shadow: var(--shadow-2xl);
  overflow: hidden;
}

.panel-head {
  flex-shrink: 0;
  padding: 20px 20px 14px;
}

#sidebar h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.375;
  letter-spacing: -0.025em;
  color: var(--ink);
}

#stats {
  margin: 2px 0 0;
  font-size: 12px;
  color: var(--muted-ink);
}

.search-row {
  display: flex;
  gap: 6px;
  margin-top: 18px;
}

#search {
  display: block;
  flex: 1;
  min-width: 0;
  padding: 8px 12px;
  border: 0;
  border-radius: 12px;
  background: var(--fill);
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  outline: none;
  transition: background 200ms, box-shadow 200ms;
}
#search::placeholder { color: var(--muted-ink); }
#search:focus { background: var(--raised); box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.35); }
/* Clear button: the card's close icon instead of Chrome/Safari's default cross */
#search::-webkit-search-cancel-button {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  margin-left: 8px;
  background: var(--ink-3);
  -webkit-mask: url(icons/close.svg) center / 12px no-repeat;
  mask: url(icons/close.svg) center / 12px no-repeat;
  cursor: pointer;
}

#filter-toggle {
  position: relative;
  flex: none;
  width: 36px;
  border: 0;
  border-radius: 12px;
  background: var(--fill);
  color: var(--ink-3);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background 200ms, color 200ms, box-shadow 200ms;
}
#filter-toggle:hover { color: var(--ink); }
#filter-toggle[aria-expanded="true"] { background: var(--raised); color: var(--ink); box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05); }
#filter-toggle:focus-visible { outline: 2px solid var(--blue); outline-offset: 1px; }
.filter-count {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  border-radius: 999px;
  background: var(--blue);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  line-height: 16px;
  text-align: center;
}
.filter-count[hidden] { display: none; }

.filter-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 280ms var(--ease-ios);
}
.filter-panel.open { grid-template-rows: 1fr; }
.filter-panel-inner { overflow: hidden; min-height: 0; }
/* Closed: take the controls out of the tab order too */
.filter-panel:not(.open) .filter-panel-inner { visibility: hidden; transition: visibility 0s 280ms; }

/* Type chips: same 12px corners and grey fill as the search box when off;
 * white when selected. Text and dot stay full strength either way. */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 10px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 12px;
  background: var(--fill);
  font-size: 12px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  user-select: none;
  transition: background 280ms var(--ease-ios);
}
.chip input { position: absolute; opacity: 0; pointer-events: none; }
.chip .dot { width: 8px; height: 8px; border-radius: 50%; }
.chip:has(input:checked) { background: var(--raised); }
.chip:has(input:focus-visible) { outline: 2px solid var(--blue); outline-offset: 1px; }

/* iOS-style switches */
.switches { margin-top: 8px; }
.switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 5px 0;
  font-size: 13px;
  color: var(--ink-3);
  cursor: pointer;
}
.switch-row input {
  appearance: none;
  -webkit-appearance: none;
  flex: none;
  position: relative;
  width: 34px;
  height: 20px;
  margin: 0;
  border-radius: 999px;
  background: var(--switch-off);
  cursor: pointer;
  transition: background 280ms var(--ease-ios);
}
.switch-row input::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  transition: transform 280ms var(--ease-ios);
}
.switch-row input:checked { background: var(--blue); }
.switch-row input:checked::after { transform: translateX(14px); }
.switch-row input:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

.count {
  display: inline-block;
  margin-left: 4px;
  padding: 0 6px;
  border-radius: 999px;
  background: var(--fill);
  color: var(--muted-ink);
  font-size: 11px;
  font-weight: 600;
  line-height: 18px;
}

/* Hairline between the header and the list */
#list-divider { height: 1px; flex-shrink: 0; background: var(--divider); }

/* ---- Results list ---- */
#results {
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.result {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--rule);
  cursor: pointer;
  transition: background 150ms;
}
.result:hover { background: var(--hover); }
.result .meta { flex: 1; min-width: 0; }
.result .name {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.result .sub {
  margin: 0;
  font-size: 13px;
  color: var(--muted-ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.result.selected { background: var(--blue); border-bottom-color: rgba(15, 23, 42, 0.2); }
.result.selected .name { color: #fff; }
.result.selected .sub { color: rgba(255, 255, 255, 0.5); }


.list-more {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
}
.list-more button {
  padding: 6px 14px;
  border: 0;
  border-radius: 999px;
  background: var(--fill);
  color: var(--ink-2);
  font: inherit;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: background 150ms;
}
.list-more button:hover { background: var(--fill-strong); }
.list-more .sub { font-size: 12px; color: var(--muted-ink); }

/* Thin thumb on a transparent track. Chrome ignores the ::-webkit-scrollbar
 * rules whenever scrollbar-width/-color are set and draws its own scrollbar,
 * whose track shows as a dark strip inside the dark panels, so the standard
 * properties are only for browsers without the -webkit- pseudo (Firefox). */
.scrollbar-subtle::-webkit-scrollbar { width: 4px; }
.scrollbar-subtle::-webkit-scrollbar-track { background: transparent; }
.scrollbar-subtle::-webkit-scrollbar-thumb { background: rgba(148, 163, 184, 0.35); border-radius: 2px; }
@supports not selector(::-webkit-scrollbar) {
  .scrollbar-subtle { scrollbar-width: thin; scrollbar-color: rgba(148, 163, 184, 0.35) transparent; }
}

#sheet-handle { display: none; }

/* Mapbox sets its own font on its controls */
.mapboxgl-map, .mapboxgl-ctrl { font-family: inherit; }
/* Zoom and locate buttons: same soft shadow as the map key, not Mapbox's grey ring */
.mapboxgl-ctrl-group:not(:empty) { box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12); }
/* Credits (i) button: Mapbox's own icon, in grey rather than black */
.mapboxgl-ctrl-attrib-button { background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg' fill-rule='evenodd' fill='%23666'%3E%3Cpath d='M4 10a6 6 0 1 0 12 0 6 6 0 1 0-12 0m5-3a1 1 0 1 0 2 0 1 1 0 1 0-2 0m0 3a1 1 0 1 1 2 0v3a1 1 0 1 1-2 0'/%3E%3C/svg%3E") !important; }

/* ---- Building detail card (mirrors the mountains DetailPanel) ----
 * On desktop it floats just above the building's point; app.js sets left/top
 * as the map moves. It passes under the sidebar if panned behind it. */
#detail {
  position: absolute;
  top: 0;
  left: 0;
  width: 20rem;
  z-index: 5;
}
#detail-body {
  max-height: calc(100vh - 140px);
  overflow-y: auto;
  background: var(--glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-radius: 28px;   /* replaced by a squircle clip-path */
}
.detail-outline {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}
.detail-outline path { fill: none; stroke: var(--glass-border); stroke-width: 1; }
#detail[hidden] { display: none; }
#detail.enter { animation: detail-in 180ms ease; transform-origin: 50% 100%; }
@keyframes detail-in {
  from { transform: translateY(8px) scale(0.96); opacity: 0; }
  to { transform: none; opacity: 1; }
}
/* Hidden while flying in from a list click, so it doesn't sweep across the map. */
#detail.flying { visibility: hidden; }

.detail-hero {
  position: relative;
  height: 14rem;
  background: var(--placeholder);
  overflow: hidden;
}
.detail-hero::before {   /* loading shimmer until the photo arrives */
  content: "";
  position: absolute;
  inset: 0;
  background: var(--placeholder);
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
@keyframes pulse { 50% { opacity: 0.5; } }
.hero-img {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0;
  transition: opacity 300ms;
}
.hero-img.ready { opacity: 1; }
.hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.4) 50%, transparent);
}
.detail-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.4);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background 150ms;
}
.detail-close:hover { background: rgba(0, 0, 0, 0.7); }
.detail-close img { width: 12px; height: 12px; filter: brightness(0) invert(1); }
.hero-text {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0 20px 16px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 8px;
}
.hero-title { min-width: 0; }
.hero-badge {
  display: inline-block;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  vertical-align: top;
  margin-bottom: 6px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.hero-title h2 {
  margin: 0;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.25;
}
.hero-stat { flex-shrink: 0; display: flex; align-items: baseline; gap: 4px; }
.hero-stat span { color: #fff; font-size: 24px; font-weight: 700; }
.hero-stat small { color: rgba(255, 255, 255, 0.7); font-size: 12px; }

.detail-section {
  padding: 16px 24px;
  border-bottom: 1px solid var(--section-rule);
}
.detail-desc {
  margin: 0;
  color: var(--body-ink);
  font-size: 14px;
  line-height: 20px;
  letter-spacing: -0.2px;
}
.detail-note { margin: 6px 0 0; color: var(--muted-ink); font-size: 11px; }

.detail-actions { padding: 16px 24px 18px; }
.btn-primary {
  display: block;
  padding: 8px 10px;     /* same size and shape as .detail-links a */
  border-radius: 10px;
  background: #3b82f6;   /* blue-500, as the mountains Google Maps button */
  color: #fff;
  text-align: center;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background 150ms;
}
.btn-primary:hover { background: var(--blue); }
.detail-links { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.detail-links a {
  flex: 1;
  padding: 8px 10px;
  border-radius: 10px;
  background: var(--fill);
  color: var(--ink-3);
  text-align: center;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: background 150ms;
}
.detail-links a:hover { background: var(--fill-strong); }

/* ---- Token warning ---- */
#token-warning {
  position: fixed;
  inset: 0;
  background: #000000c0;
  display: grid;
  place-items: center;
  z-index: 10;
}
/* The ID selector above would otherwise override the [hidden] attribute. */
#token-warning[hidden] { display: none; }
#token-warning > div {
  color: #f8fafc;
  background: var(--panel);
  padding: 26px 30px;
  border-radius: 12px;
  max-width: 420px;
}
#token-warning code { background: var(--panel-2); padding: 1px 6px; border-radius: 4px; }

/* ---- Mobile: the panel becomes a bottom sheet ---- */
@media (max-width: 767px) {
  /* Collapsed sheet shows the handle, title and count; search is a tap away */
  :root { --sheet-peek: 108px; }
  #sidebar {
    position: fixed;
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    width: auto;
    height: 72vh;
    background: var(--sheet-glass);
    border-bottom: 0;
    border-radius: 28px 28px 0 0;
    transform: translateY(calc(72vh - var(--sheet-peek)));
    transition: transform 300ms var(--ease-ios);
    will-change: transform;
  }
  #sidebar.expanded { transform: translateY(0); }

  #sheet-handle {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
    width: 100%;
    padding: 10px 0 6px;
    border: 0;
    background: none;
    font: inherit;
    cursor: pointer;
  }
  #sheet-handle .grip { width: 40px; height: 4px; border-radius: 999px; background: rgba(148, 163, 184, 0.5); }
  #sheet-handle .hint { margin-top: 6px; font-size: 12px; font-weight: 500; color: var(--muted-ink); }
  .panel-head { padding-top: 4px; }

  #detail {
    position: fixed;
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    width: auto;
    z-index: 30;
  }
  #detail-body {
    max-height: 85vh;
    overscroll-behavior: contain;
    background: var(--sheet-glass);
    border-radius: 28px 28px 0 0;
  }
  #detail.enter { animation: sheet-up 220ms cubic-bezier(0.22, 1, 0.36, 1); }
  @keyframes sheet-up { from { transform: translateY(100%); } to { transform: translateY(0); } }
  body.detail-open #sidebar { display: none; }
}

/* ---- Protected structures additions ---- */
.result .era-dot {
  width: 10px;
  height: 10px;
  flex: none;
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--dot-ring);
}
.result.selected .era-dot { box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.6); }

.detail-address { margin: 0 0 4px; color: var(--ink-2); font-size: 13px; font-weight: 600; }
.detail-section .detail-desc + .detail-desc { margin-top: 8px; }
.detail-desc.clamp {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 6;
  overflow: hidden;
}
.read-more {
  margin-top: 4px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--link);
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

/* Conservation zones: swatches and the legend at the bottom of the map */
.zone-swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin-right: 6px;
  border-radius: 3px;
  vertical-align: -1px;
}

#map-legend {
  position: absolute;
  left: calc(12px + 18rem + 12px);
  bottom: 12px;
  z-index: 4;
  max-width: 300px;
  padding: 10px 12px;
  border-radius: 16px;
  background: var(--glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  font-size: 12px;
  color: var(--ink-3);
}
#map-legend .legend-zones[hidden] { display: none; }
/* Dot colours: a two-column grid below the zones, split by a hairline */
#map-legend .legend-eras {
  display: grid;
  grid-template-columns: auto auto;
  gap: 4px 14px;
}
#map-legend .legend-zones:not([hidden]) + .legend-eras {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--divider);
}
.legend-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 6px;
  border-radius: 50%;
  vertical-align: -1px;
}
#map-legend .legend-rows { display: flex; flex-direction: column; gap: 4px; }
#map-legend .legend-more {
  margin-top: 6px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--link);
  font: inherit;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}
#map-legend .legend-text { display: none; margin: 6px 0 0; font-size: 11px; line-height: 15px; color: var(--muted-ink); }
#map-legend.open .legend-text { display: block; }

@media (max-width: 767px) {
  /* The bottom sheet owns the bottom of the screen; sit the key top-left. */
  #map-legend { left: 12px; top: 12px; bottom: auto; max-width: calc(100vw - 80px); }
  body.detail-open #map-legend { display: none; }
  /* Keep the Mapbox logo and credits above the collapsed bottom sheet */
  .mapboxgl-ctrl-bottom-right { bottom: var(--sheet-peek); }
}