/*
 * Palette aligned to the site's dark tokens (src/styles/tokens.css) so the lab reads as
 * part of the same product. This tool stays dark-only on purpose: the default basemap is
 * CARTO Dark Matter and the heat ramp is calibrated against it — see DECISIONS.md.
 *
 * The temperature ramp itself is data semantics and is NOT re-themed (§7.3).
 */
:root {
  --bg: #111110;
  --panel: #1a1a18;
  --panel-2: #232320;
  --border: #33322e;
  --text: #f0eee9;
  --muted: #a8a49b;
  --accent: #4fd1d9;
  --accent-contrast: #06282b;
  --alert: #ff8f7a;
  --alert-bg: #3a1512;
  --focus: #4fd1d9;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, #1a2028, #232c38);
}

.brand h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  color: #fff;
}

.subtitle {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

#last-updated {
  font-size: 12px;
  color: var(--muted);
}

#refresh-btn {
  background: var(--accent);
  color: var(--accent-contrast);
  border: none;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
}

#refresh-btn:hover { background: #86e2e8; }
#refresh-btn:disabled { background: #555; cursor: not-allowed; }

.alert-banner {
  background: var(--alert-bg);
  border-left: 4px solid var(--alert);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
}

.alert-icon {
  font-size: 20px;
  color: var(--alert);
}

.hidden { display: none !important; }

.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 20px 24px;
}

.kpi {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}

.kpi-label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-value {
  font-size: 24px;
  font-weight: 600;
  margin-top: 6px;
  color: #fff;
}

.alert-text { color: var(--alert); }

.grid-main {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 16px;
  padding: 0 24px 20px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}

.panel-header {
  margin-bottom: 12px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}

.panel-header h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}

.panel-sub {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

#map {
  height: 520px;
  border-radius: 6px;
  background: #0a0d12;
}

.map-controls {
  display: flex;
  gap: 12px;
  align-items: center;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}

.toggle input { accent-color: var(--accent); }

#basemap-select {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 5px 8px;
  font-size: 12px;
  cursor: pointer;
}
#basemap-select:focus { outline: none; border-color: var(--accent); }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
  font-size: 11px;
  color: var(--muted);
  align-items: center;
}

.legend-title {
  font-weight: 600;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 10px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.table-wrap {
  max-height: 460px;
  overflow-y: auto;
}

#ranking-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

#ranking-table th {
  position: sticky;
  top: 0;
  background: var(--panel-2);
  text-align: left;
  padding: 8px;
  font-weight: 500;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  z-index: 2;
}

#ranking-table th.sortable {
  cursor: pointer;
  user-select: none;
}

#ranking-table th.sortable:hover { color: var(--text); }

#ranking-table th.sortable::after {
  content: "\2195";
  margin-left: 4px;
  opacity: 0.3;
}

#ranking-table th.sortable.active.asc::after  { content: "\2191"; opacity: 1; color: var(--accent); }
#ranking-table th.sortable.active.desc::after { content: "\2193"; opacity: 1; color: var(--accent); }
#ranking-table th.sortable.active { color: var(--text); }

#city-filter {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 4px;
  padding: 6px 10px;
  font-size: 12px;
  width: 180px;
}

#city-filter::placeholder { color: var(--muted); }
#city-filter:focus { outline: none; border-color: var(--accent); }

#ranking-table td {
  padding: 8px;
  border-bottom: 1px solid var(--border);
}

#ranking-table tr:hover td { background: var(--panel-2); }

.temp-cell { font-weight: 600; }
.delta-up { color: var(--alert); }
.delta-down { color: #4caf50; }

.row-alert td { background: rgba(215, 25, 28, 0.08); }

#trend-chart, #history-chart {
  width: 100% !important;
  height: 340px !important;
}

.trend-panel, .alert-panel, .history-panel {
  background: linear-gradient(180deg, var(--panel) 0%, #161c24 100%);
}

.alert-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 320px;
  overflow-y: auto;
}

.alert-list li {
  padding: 10px 12px;
  border-left: 3px solid var(--alert);
  background: rgba(215, 25, 28, 0.1);
  margin-bottom: 6px;
  border-radius: 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.alert-list li.muted {
  background: transparent;
  border-left-color: var(--border);
  color: var(--muted);
}

.alert-city { font-weight: 500; }
.alert-temp { color: var(--alert); font-weight: 600; font-size: 16px; }

.history-panel { margin: 0 24px 20px; }

.history-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 16px;
}

.history-stats {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.stat-card {
  background: var(--panel-2);
  padding: 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.stat-label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-value {
  font-size: 22px;
  font-weight: 600;
  margin-top: 4px;
  color: #fff;
}

footer {
  text-align: center;
  padding: 16px 24px 24px;
  color: var(--muted);
  font-size: 11px;
  border-top: 1px solid var(--border);
}

footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* Leaflet popup theme */
.leaflet-popup-content-wrapper {
  background: #161c24;
  color: var(--text);
  border-radius: 8px;
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

.leaflet-popup-content { margin: 0; min-width: 240px; }
.leaflet-popup-tip { background: #161c24; border: 1px solid var(--border); }
.leaflet-popup-close-button { color: var(--muted) !important; }

.city-popup { padding: 0; }

.city-popup .pop-head {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.city-popup .pop-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
}

.city-popup .pop-state {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

.city-popup .pop-temp {
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
}

.city-popup .pop-body {
  padding: 10px 14px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 14px;
  font-size: 12px;
}

.city-popup .pop-row { display: flex; justify-content: space-between; gap: 8px; }
.city-popup .pop-label { color: var(--muted); }
.city-popup .pop-value { color: var(--text); font-weight: 500; }

.city-popup .pop-alert {
  margin: 0 14px 12px;
  padding: 8px 10px;
  background: rgba(215, 25, 28, 0.15);
  border-left: 3px solid var(--alert);
  border-radius: 4px;
  font-size: 11px;
  color: var(--alert);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Inline temp bar for ranking rows */
.temp-bar {
  display: inline-block;
  width: 60px;
  height: 6px;
  background: var(--panel-2);
  border-radius: 3px;
  overflow: hidden;
  vertical-align: middle;
  margin-left: 6px;
}
.temp-bar-fill { display: block; height: 100%; }

/* Choropleth legend strip */
.choropleth-legend {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  font-size: 10px;
  color: var(--muted);
}
.choropleth-legend .gradient {
  width: 120px;
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(90deg, #ffeda0, #fed976, #feb24c, #fd8d3c, #e31a1c, #800026);
}

@media (max-width: 1100px) {
  .grid-main { grid-template-columns: 1fr; }
  .kpi-row { grid-template-columns: repeat(2, 1fr); }
  .history-grid { grid-template-columns: 1fr; }
}


/* ------------------------------------------------------------------ site chrome */
/* Added when the tool was ported under /labs/ (OPERATING_GUIDE.md §7.4). */

.lab-skip {
  position: absolute;
  left: 8px;
  top: 8px;
  z-index: 2000;
  padding: 8px 16px;
  background: var(--accent);
  color: var(--accent-contrast);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform 150ms cubic-bezier(0.2, 0, 0, 1);
}

.lab-skip:focus-visible { transform: translateY(0); }

.lab-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  font-size: 13px;
}

.lab-bar a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  color: var(--muted);
  text-decoration: none;
}

.lab-bar a:hover { color: var(--accent); text-decoration: underline; }
.lab-bar-sep { color: var(--border); }

.stale-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 12px 24px;
  background: var(--panel-2);
  border-bottom: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  color: var(--text);
  font-size: 13px;
}

.stale-banner.hidden { display: none; }
.stale-banner a { color: var(--accent); }

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* Every interactive element gets a visible focus ring (§4.4). */
a:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible,
th.sortable:focus-visible,
#map:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}