body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f6f8;
}

header {
  background: #111827;
  color: white;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
}

nav a {
  color: white;
  margin-left: 15px;
  text-decoration: none;
}

.container {
  padding: 20px;
}

.card {
  background: white;
  padding: 15px;
  border-radius: 10px;
  margin-bottom: 20px;
}

.filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

input, button {
  padding: 8px;
}

button {
  background: black;
  color: white;
  border: none;
  cursor: pointer;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th, .table td {
  padding: 8px;
  border-bottom: 1px solid #ddd;
}

.hidden {
  display: none;
}