body {
  font-family: Arial, sans-serif;
  background: #0f1c2e;
  color: #fff;
  margin: 0;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 20px;
}

.search {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.search input {
  flex: 1;
  padding: 10px;
  border-radius: 6px;
  border: none;
}

.search button {
  padding: 10px 15px;
  background: #1dd3b0;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.cities {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.city {
  background: #1a2b4c;
  padding: 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: 0.3s;
}

.city:hover {
  background: #26406d;
  transform: scale(1.05);
}

.panel {
  background: #1a2b4c;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.aqi-display {
  margin-bottom: 15px;
}

.aqi-bar {
  height: 15px;
  width: 100%;
  border-radius: 6px;
  margin: 8px 0;
  background: linear-gradient(to right, green, yellow, orange, red, purple, maroon);
}

.details p {
  margin: 5px 0;
}

button {
  background: #5b8cff;
  color: #fff;
  padding: 10px 15px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
}

.chart {
  background: #1a2b4c;
  padding: 20px;
  border-radius: 8px;
}