html, body, #map {
  height: 100%;
  margin: 0;
  padding: 0;
  width: 100%;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.fullscreen-popup {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  z-index: 2000;
  display: none;
  flex-direction: column;
}
.close-btn {
  margin-top: 20px;
  background: #444;
  padding: 10px;
  cursor: pointer;
  border: none;
  color: white;
}

#info-contents {
  width: 90%;
  max-width: 600px;
}

a {
  color: #4da6ff; /* unvisited link */
  text-decoration: none;
}

a:visited {
  color: #a97fff; /* visited link — readable, non-ugly */
}

a:hover {
  text-decoration: underline;
}

.leaflet-tile {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.leaflet-tooltip.pressure-label {
    background: transparent;
    border: none;
    box-shadow: none;
    font-family: 'Roboto', Arial, sans-serif;
    font-size: 12px;
    font-weight: 600;
    color: #f5f5f5; /* light text */
    text-shadow:
        -1px -1px 2px rgba(0,0,0,0.8),
         1px -1px 2px rgba(0,0,0,0.8),
        -1px  1px 2px rgba(0,0,0,0.8),
         1px  1px 2px rgba(0,0,0,0.8);
    padding: 0;
}

.isobar-line {
  filter: drop-shadow(0 0 1px rgba(0,0,0,0.5));
}