* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #0f1117;
  color: #e0e0e0;
}

header {
  padding: 16px 24px;
  display: flex;
  align-items: baseline;
  gap: 16px;
  background: #161822;
  border-bottom: 1px solid #2a2d3a;
}

header h1 {
  font-size: 20px;
  font-weight: 600;
  color: #fff;
}

#status {
  font-size: 13px;
  color: #888;
}

main {
  display: flex;
  flex-direction: column;
}

#map {
  height: 70vh;
  min-height: 350px;
}

.leaflet-container {
  background: #1a1c2e;
}

#panel {
  background: #161822;
  border-top: 1px solid #2a2d3a;
  padding: 16px max(24px, calc((100% - 800px) / 2));
  overflow-y: auto;
}

h2 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #ccc;
}

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

th {
  text-align: left;
  padding: 6px 10px;
  border-bottom: 1px solid #2a2d3a;
  color: #888;
  font-weight: 500;
}

td {
  padding: 6px 10px;
  border-bottom: 1px solid #1e2030;
}

/* Band color classes */
.band-normal { color: #50c878; }
.band-elevated { color: #f0c040; }
.band-high { color: #ff8c00; }
.band-very-high { color: #ff4444; }

/* Source badges */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-nea {
  background: rgba(59, 130, 246, 0.2);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.badge-aqicn,
.badge-purpleair,
.badge-community {
  background: rgba(249, 115, 22, 0.2);
  color: #fb923c;
  border: 1px solid rgba(249, 115, 22, 0.3);
}

/* Cluster icons */
.cluster-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 36px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 14px;
  line-height: 1.1;
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
  opacity: 0.9;
}

.cluster-icon small {
  font-size: 9px;
  font-weight: 500;
  opacity: 0.85;
}

/* Override default MarkerCluster styles */
.marker-cluster {
  background: none !important;
}

.marker-cluster div {
  background: none !important;
}

/* Map marker overlay labels */
.map-marker {
  position: relative;
  width: 60px;
  height: 52px;
}

.map-marker svg {
  position: absolute;
  top: 0;
  left: 0;
}

.marker-label {
  position: absolute;
  top: 37%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 12px;
  font-weight: 700;
  text-shadow: 0 0 4px rgba(0,0,0,0.8), 0 0 8px rgba(0,0,0,0.6);
  white-space: nowrap;
  pointer-events: none;
}

.marker-source {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  font-size: 9px;
  font-weight: 600;
  text-shadow: 0 0 3px rgba(0,0,0,0.8), 0 0 6px rgba(0,0,0,0.6);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0.85;
}

/* Leaflet popup overrides */
.leaflet-popup-content-wrapper {
  background: #1e2030;
  color: #e0e0e0;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.leaflet-popup-tip {
  background: #1e2030;
}

.leaflet-popup-content {
  margin: 12px;
  font-size: 13px;
  line-height: 1.5;
}

.popup-title {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 4px;
}

.popup-value {
  font-size: 32px;
  font-weight: 700;
  margin: 2px 0;
}

.popup-unit {
  font-size: 11px;
  color: #888;
  margin-bottom: 2px;
}

.popup-band {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
}

.popup-table {
  width: 100%;
  margin-bottom: 8px;
  font-size: 12px;
}

.popup-table td {
  padding: 2px 0;
  border: none;
}

.popup-key {
  color: #888;
  padding-right: 12px !important;
  white-space: nowrap;
}

.popup-val {
  color: #ccc;
  text-align: right;
}

.popup-meta {
  font-size: 11px;
  color: #666;
  line-height: 1.6;
}

/* Legend */
.legend {
  background: #1e2030;
  border-radius: 8px;
  font-size: 12px;
  line-height: 2;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
  border: 1px solid #2a2d3a;
  color: #ccc;
}

.legend-toggle-row {
  display: none;
}

.legend-close {
  display: none;
}

.legend-body {
  position: relative;
  padding: 10px 14px;
}

.legend-title {
  font-weight: 600;
  margin-bottom: 2px;
  color: #e0e0e0;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.legend-color {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 2px;
}

.legend-divider {
  border: none;
  border-top: 1px solid #2a2d3a;
  margin: 4px 0;
}

.legend-marker {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid;
}

.legend-marker.circle {
  border-radius: 50%;
  border-color: #60a5fa;
  background: rgba(59, 130, 246, 0.3);
}


@media (max-width: 768px) {
  .legend-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #1e2030;
    border-radius: 8px;
  }

  .legend-toggle {
    display: block;
    flex: 1;
    padding: 8px 14px;
    background: none;
    color: #ccc;
    border: none;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
  }

  .legend-close {
    display: none;
    background: none;
    border: none;
    color: #888;
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    padding: 8px 12px;
  }

  .legend.legend-open .legend-close {
    display: block;
  }

  .legend-body {
    display: none;
  }

  .legend.legend-open .legend-body {
    display: block;
  }

  .legend.legend-open .legend-toggle-row {
    border-radius: 8px 8px 0 0;
    border-bottom: 1px solid #2a2d3a;
  }
}

/* Collapsible sections */
#panel details {
  border-bottom: 1px solid #2a2d3a;
}

#panel details:last-child {
  border-bottom: none;
}

#panel summary {
  font-size: 14px;
  font-weight: 600;
  color: #ccc;
  cursor: pointer;
  padding: 10px 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
}

#panel summary::-webkit-details-marker {
  display: none;
}

#panel summary::before {
  content: "\25B6";
  font-size: 10px;
  color: #666;
  transition: transform 0.15s;
}

#panel details[open] summary::before {
  transform: rotate(90deg);
}

#panel details > :not(summary) {
  padding-bottom: 12px;
}

#bands-section table {
  max-width: 400px;
}

#history-controls {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

#history-controls label {
  font-size: 13px;
  color: #888;
}

#history-controls input {
  background: #1e2030;
  border: 1px solid #2a2d3a;
  color: #e0e0e0;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 13px;
}

#history-btn {
  background: #3b82f6;
  color: #fff;
  border: none;
  padding: 6px 16px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
}

#history-btn:hover {
  background: #2563eb;
}

#history-pagination {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
  font-size: 13px;
  color: #888;
}

#history-pagination button {
  background: #1e2030;
  color: #ccc;
  border: 1px solid #2a2d3a;
  padding: 4px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
}

#history-pagination button:hover:not(:disabled) {
  background: #2a2d3a;
}

#history-pagination button:disabled {
  opacity: 0.4;
  cursor: default;
}

.panel-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 12px;
  align-items: flex-start;
}

.feedback-btn {
  display: inline-block;
  padding: 8px 20px;
  background: transparent;
  color: #ccc;
  font-size: 13px;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none;
  border: 1px solid #2a2d3a;
}

.feedback-btn:hover {
  background: #1e2030;
}

.donate-btn {
  display: inline-block;
  margin: 12px 0;
  padding: 8px 20px;
  background: #635bff;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none;
}

.donate-btn:hover {
  background: #524ddb;
}

#about-section h3 {
  font-size: 13px;
  font-weight: 600;
  color: #aaa;
  margin: 12px 0 6px;
}

#about-section ul {
  list-style: none;
  padding: 0;
}

#about-section li {
  font-size: 13px;
  line-height: 1.8;
  color: #999;
}

#about-section a {
  color: #60a5fa;
  text-decoration: none;
}

#about-section a:hover {
  text-decoration: underline;
}

#about-section p {
  font-size: 13px;
  line-height: 1.7;
  color: #999;
  max-width: 640px;
  margin-bottom: 10px;
}

/* Responsive */
@media (max-width: 768px) {
  header {
    flex-direction: column;
    gap: 4px;
    padding: 12px 16px;
  }

  #panel {
    padding: 12px 16px;
  }

  table {
    font-size: 12px;
  }

  th, td {
    padding: 4px 6px;
  }
}