body {
  font-family: Arial, sans-serif;
  padding: 20px;
  background: #f9f9f9;
}

h1 {
  text-align: center;
  margin-bottom: 20px;
}

.controls {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 15px;
}

input, select {
  padding: 8px;
  font-size: 14px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

th, td {
  border: 1px solid #ddd;
  padding: 10px;
  text-align: left;
  cursor: pointer;
}

th {
  background-color: #f4f4f4;
  position: relative;
}

th.sorted-asc::after {
  content: "▲";
  position: absolute;
  right: 10px;
  font-size: 12px;
}

th.sorted-desc::after {
  content: "▼";
  position: absolute;
  right: 10px;
  font-size: 12px;
}

tr:nth-child(even) {
  background-color: #f9f9f9;
}

tr:hover {
  background-color: #f1f1f1;
}