/* Light theme is the default; dark theme is applied via prefers-color-scheme. */
:root {
  --bg: #ffffff;
  --panel: #f6f8fa;
  --panel-2: #eef1f4;
  --border: #d0d7de;
  --text: #1f2328;
  --muted: #656d76;
  --accent: #0969da;
  --accent-2: #218bff;
  --on-accent: #ffffff;
  --good: #1a7f37;
  --warn: #9a6700;
  --bad: #cf222e;
  --map-bg: #e4e9ef;
  --cluster-halo: rgba(9, 105, 218, 0.15);
  --cluster-fill: rgba(9, 105, 218, 0.55);
  --toast-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
  --dialog-backdrop: rgba(31, 35, 40, 0.4);
  --mono: ui-monospace, "SF Mono", Menlo, Monaco, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --sidebar-w: 360px;
  --mobile-bar-h: 0px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --panel: #161b22;
    --panel-2: #1c232b;
    --border: #30363d;
    --text: #e6edf3;
    --muted: #8b949e;
    --accent: #58a6ff;
    --accent-2: #79c0ff;
    --on-accent: #0d1117;
    --good: #3fb950;
    --warn: #d29922;
    --bad: #f85149;
    --map-bg: #0a0e13;
    --cluster-halo: rgba(88, 166, 255, 0.3);
    --cluster-fill: rgba(88, 166, 255, 0.65);
    --toast-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
    --dialog-backdrop: rgba(0, 0, 0, 0.6);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0; height: 100%;
  background: var(--bg); color: var(--text);
  font-family: var(--sans); font-size: 14px; line-height: 1.5;
  overflow: hidden;
}

body {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: 100%;
  grid-template-areas: "sidebar main";
}

#sidebar { grid-area: sidebar; }
main { grid-area: main; }
#mobile-bar { display: none; }

.muted { color: var(--muted); }
.small { font-size: 12px; }

/* ── Sidebar ──────────────────────────────────────────────── */

#sidebar {
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  overflow: hidden;
  min-height: 0;
}

#sidebar > header {
  padding: 16px 18px 12px; border-bottom: 1px solid var(--border);
}
#sidebar h1 {
  margin: 0; font-size: 18px; font-weight: 600; letter-spacing: -0.01em;
}
#sidebar h1 span { font-weight: 400; }
#sidebar > header p { margin: 4px 0 0; }

.filters {
  padding: 12px 14px; border-bottom: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 8px;
}

.filters input[type="text"],
.filters input[type="search"],
.filters input[type="number"],
.filters select {
  background: var(--bg); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px;
  padding: 8px 10px; font: inherit; width: 100%;
  outline: none; transition: border-color 120ms ease, box-shadow 120ms ease;
  min-width: 0;
}
.filters input:focus,
.filters select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent);
}
.filters .row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

.stats { padding-top: 4px; }
.stats #total { color: var(--text); font-variant-numeric: tabular-nums; font-weight: 600; }

/* ── Advanced filter section ─────────────────────────────── */

.advanced {
  border: 1px solid var(--border); border-radius: 6px;
  background: var(--bg);
}
.advanced > summary {
  cursor: pointer; padding: 8px 10px;
  font-weight: 600; color: var(--text);
  list-style: none; user-select: none;
  display: flex; align-items: center; gap: 6px;
}
.advanced > summary::-webkit-details-marker { display: none; }
.advanced > summary::before {
  content: "▸"; font-size: 10px; color: var(--muted);
  transition: transform 120ms ease;
  display: inline-block;
}
.advanced[open] > summary::before { transform: rotate(90deg); }
.advanced > .field,
.advanced > .range,
.advanced > .reset {
  margin: 8px 10px;
}
.advanced > .field:first-of-type { margin-top: 4px; }
.advanced > .reset { margin-bottom: 10px; }

.advanced .field {
  display: flex; flex-direction: column; gap: 4px;
}
.advanced .field > span {
  font-size: 12px; color: var(--muted);
}

.advanced .range {
  border: 0; padding: 0; margin: 8px 10px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 6px;
}
.advanced .range legend {
  grid-column: 1 / -1;
  font-size: 12px; color: var(--muted);
  padding: 0; margin-bottom: 2px;
}

.reset {
  background: transparent; color: var(--muted);
  border: 1px solid var(--border); border-radius: 6px;
  padding: 6px 10px; font: inherit; cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease;
}
.reset:hover { color: var(--text); border-color: var(--text); }

/* ── Results list ─────────────────────────────────────────── */

.results { flex: 1; overflow-y: auto; padding: 4px 0; min-height: 0; }
.result {
  padding: 10px 14px; border-bottom: 1px solid var(--border);
  cursor: pointer; transition: background 80ms ease;
}
.result:hover { background: var(--panel-2); }
.result.active { background: color-mix(in srgb, var(--accent) 12%, transparent); }
.result .name { font-weight: 600; color: var(--text); }
.result .meta {
  margin-top: 2px; color: var(--muted); font-size: 12px;
  display: flex; gap: 8px; flex-wrap: wrap;
}
.result .meta .wmo { color: var(--accent-2); font-family: var(--mono); }
.result .meta .count { color: var(--muted); font-family: var(--mono); }
.result .meta .dist { color: var(--good); font-variant-numeric: tabular-nums; }
.result .meta .zone { color: var(--warn); font-family: var(--mono); }

#sidebar > footer {
  padding: 10px 14px; border-top: 1px solid var(--border); background: var(--panel-2);
}

/* ── Map ─────────────────────────────────────────────────── */

main { position: relative; }
#map { position: absolute; inset: 0; background: var(--map-bg); }

.leaflet-container { background: var(--map-bg); }

/* Theme-aware marker-cluster tints (leaflet.markercluster overrides) */
.marker-cluster-small,
.marker-cluster-medium,
.marker-cluster-large { background-color: var(--cluster-halo); }
.marker-cluster-small div,
.marker-cluster-medium div,
.marker-cluster-large div { background-color: var(--cluster-fill); color: white; }

/* ── Popups ─────────────────────────────────────────────── */

.leaflet-popup-content-wrapper {
  background: var(--panel); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
}
.leaflet-popup-tip { background: var(--panel); }
.leaflet-popup-content { margin: 10px 12px; min-width: 220px; }
.leaflet-popup-content .pop-name { font-weight: 600; font-size: 13px; }
.leaflet-popup-content .pop-meta { color: var(--muted); font-size: 12px; margin-top: 2px; }
.leaflet-popup-content button {
  margin-top: 8px;
  background: var(--accent); color: var(--on-accent);
  border: 0; border-radius: 5px; padding: 6px 10px;
  font: inherit; font-weight: 600; cursor: pointer;
}
.leaflet-popup-content button:hover { background: var(--accent-2); }

/* ── Detail dialog ──────────────────────────────────────── */

dialog#detail {
  background: var(--panel); color: var(--text);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 0; max-width: 440px; width: 92%;
  max-height: 90dvh; overflow: auto;
}
dialog#detail::backdrop { background: var(--dialog-backdrop); }
dialog#detail header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--panel); z-index: 1;
}
dialog#detail h2 { margin: 0; font-size: 15px; font-weight: 600; }
dialog#detail button#detail-close {
  background: transparent; color: var(--muted); border: 0; cursor: pointer;
  font-size: 22px; line-height: 1;
  width: 32px; height: 32px;
}
dialog#detail dl {
  margin: 0; padding: 14px 18px;
  display: grid; grid-template-columns: 110px 1fr; gap: 6px 12px;
  font-size: 13px;
}
dialog#detail dt { color: var(--muted); }
dialog#detail dd { margin: 0; font-family: var(--mono); word-break: break-word; }

.variants {
  border-top: 1px solid var(--border);
  padding: 14px 18px 16px;
}
.variants h3 {
  margin: 0 0 10px; font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--muted);
}
.variants ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.variant-row {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 8px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.variant-info { min-width: 0; }
.variant-name {
  font-family: var(--mono); font-size: 12px; color: var(--text);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.variant-sub { margin-top: 2px; font-family: var(--mono); }
.variant-download {
  flex-shrink: 0;
  background: var(--accent); color: var(--on-accent); border: 0;
  border-radius: 5px; padding: 6px 10px;
  font: inherit; font-weight: 600; font-size: 12px; cursor: pointer;
  min-width: 108px; text-align: center;
}
.variant-download:hover { background: var(--accent-2); }
.variant-download[disabled] { opacity: 0.6; cursor: progress; }

/* ── Toast ──────────────────────────────────────────────── */

#toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--panel); border: 1px solid var(--border);
  color: var(--text); padding: 10px 16px; border-radius: 8px;
  font-size: 13px; pointer-events: none;
  opacity: 0; transition: opacity 200ms ease;
  box-shadow: var(--toast-shadow);
  max-width: calc(100vw - 32px);
}
#toast.visible { opacity: 1; }
#toast.good { border-color: var(--good); }
#toast.bad { border-color: var(--bad); }

/* ── Mobile bar (hidden on desktop) ──────────────────────── */

#mobile-bar {
  align-items: center; justify-content: space-between;
  padding: 10px 14px env(safe-area-inset-top, 0) 14px;
  padding-top: max(10px, env(safe-area-inset-top, 0));
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  gap: 10px;
}
#mobile-bar .brand {
  font-weight: 600; letter-spacing: -0.01em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.view-toggle {
  display: inline-flex; border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg); padding: 2px;
}
.view-toggle button {
  background: transparent; color: var(--muted); border: 0;
  padding: 8px 14px; font: inherit; font-weight: 600; font-size: 13px;
  border-radius: 6px; cursor: pointer; min-height: 36px;
}
.view-toggle button[aria-selected="true"] {
  background: var(--accent); color: var(--on-accent);
}

/* ── Mobile breakpoint ──────────────────────────────────── */

@media (max-width: 768px) {
  :root { --mobile-bar-h: 56px; }

  body {
    grid-template-columns: 1fr;
    grid-template-rows: var(--mobile-bar-h) 1fr;
    grid-template-areas:
      "bar"
      "content";
  }

  #mobile-bar { display: flex; grid-area: bar; }
  #sidebar, main { grid-area: content; }

  /* One pane visible at a time. We toggle via a class on <body>. */
  body.view-list main { display: none; }
  body.view-map #sidebar { display: none; }

  #sidebar > footer { display: none; }
  #sidebar > header { padding: 10px 14px; }
  #sidebar > header p { display: none; }
  #sidebar h1 { display: none; }

  /* Touch-friendly target sizes (≥ 44px). */
  .filters input[type="text"],
  .filters input[type="search"],
  .filters input[type="number"],
  .filters select,
  .reset {
    padding: 11px 12px;
    font-size: 16px; /* prevents iOS Safari zoom-on-focus */
  }
  .advanced > summary { padding: 12px 12px; min-height: 44px; }

  dialog#detail {
    max-width: 100%; width: 100%;
    margin: 0; align-self: end;
    border-radius: 12px 12px 0 0;
    max-height: 85dvh;
  }
  dialog#detail dl { grid-template-columns: 100px 1fr; }
  .variant-download { min-width: 92px; padding: 10px 12px; }

  #toast { bottom: 16px; }
}

@media (max-width: 380px) {
  .advanced .range { grid-template-columns: 1fr; }
}