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

.card {
  flex: 1;
  min-width: 250px;
  padding: 20px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.card h2 {
  font-size: 22px;
  margin-bottom: 10px;
}

.status {
  font-weight: bold;
  font-size: 18px;
}

.gauge-container {
  position: relative;
  width: 125px;
  height: 120px;
  margin: auto;
}

.value-text {
  position: absolute;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 24px;
  font-weight: bold;
  color: #000;
}

.chart {
  background: white;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  min-height: 300px;
}

.chart canvas {
  width: 100% !important;
  height: 400px !important;
}

.footer {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  font-size: 16px;
  border-top: 1px solid #ccc;
  margin-top: 20px;
  color: #555;
}

#water-level,
#temp {
  font-size: 40px;
  font-weight: bold;
  text-align: center;
  margin-top: 20px;
  color: #000;
}

#water-status,
#temp-status {
  font-size: 30px;
  font-weight: bold;
  color: green;
  text-align: center;
  margin-top: 10px;
}

form select {
  padding: 4px;
  font-size: 14px;
}