body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  background-color: #f5fdf7;
  color: #333;
}

header {
  display: flex;
  align-items: center;
  background-color: #a8d5ba;
  padding: 0.5em 1em;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header img {
  height: 40px;
  margin-right: 1em;
}

header h1 {
  font-size: 1.5em;
  margin: 0;
  color: #2d4739;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1em;
  padding: 1em;
  background-color: #e8f5ec;
  border-bottom: 1px solid #c3e6d3;
}

.controls label, .controls select {
  font-size: 1em;
}

.controls a {
  display: inline-block;
  margin-top: 0.5em;
  text-decoration: none;
  color: #2d4739;
  background-color: #c3e6d3;
  padding: 0.4em 0.8em;
  border-radius: 5px;
  transition: background-color 0.2s;
}

.controls a:hover {
  background-color: #a8d5ba;
}

.variable-info {
  text-align: center;
  padding: 0.5em;
  background-color: #f0fdf5;
  font-size: 0.95em;
}

.intro-text {
  display: flex;
  justify-content: space-between;
  padding: 1em 2em;
  background-color: #f0fdf5;
  border-bottom: 1px solid #c3e6d3;
  color: #2d4739;
  gap: 2em;
  flex-wrap: wrap;
}

.intro-main {
  flex: 3;
  min-width: 250px;
}

.intro-citation {
  flex: 1;
  min-width: 200px;
  font-size: 0.9em;
  background-color: #e8f5ec;
  padding: 0.8em;
  border-left: 3px solid #a8d5ba;
  border-radius: 4px;
}

#unit-text {
  margin-left: 0.5em;
}

footer {
  text-align: center;
  font-size: 0.9em;
  padding: 1em;
  background-color: #e8f5ec;
  border-top: 1px solid #c3e6d3;
  color: #2d4739;
}

footer a {
  color: #2d4739;
  text-decoration: none;
  margin: 0 0.5em;
}

footer a:hover {
  text-decoration: underline;
}

.page-content {
  padding: 2em;
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.05em;
  color: #2d4739;
}

#map {
  height: 60vh;
}