:root {
  --primary-color: #003594;
}
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding-left: 20px;
  padding-right: 20px;
  line-height: 1.6;
  word-break: keep-all;
}
h1 {
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 0;
}
p {
  margin-top: 0;
  color: #666;
  text-align: center;
}
.container {
  max-width: 600px;
  margin: 0 auto;
}
.date-range {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
  gap: 10px;
}
input[type="date"] {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}
input[type="date"],
button {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
}
button {
  background-color: var(--primary-color);
  color: white;
  border: none;
}
.button-container {
  display: flex;
  gap: 10px;
}
.chart-container {
  width: 100%;
  height: 500px;
  background-color: #f9f9f9;
  border: 1px solid #ddd;
  margin-top: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #666;
}