body {
  font-family: Arial, sans-serif;
  background-color: #f5f5f5;
  color: #333;
  margin: 0;
  padding: 20px;
}

h1 {
  text-align: center;
  color: #2c3e50;
  margin-bottom: 20px;
}

form {
  background-color: #ffffff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  width: 350px;
  margin: 0 auto 30px;
}

label {
  display: block;
  margin-top: 10px;
  font-weight: bold;
}

input, select {
  width: 100%;
  padding: 8px;
  margin-top: 5px;
  border-radius: 4px;
  border: 1px solid #ccc;
  font-size: 14px;
}

button {
  width: 100%;
  padding: 10px;
  margin-top: 15px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
}

button[type="button"] {
  background-color: #2ecc71;
  color: white;
}

.reset-btn {
  background-color: #e74c3c;
  color: white;
}

button:hover {
  opacity: 0.9;
}

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

.filter select {
  padding: 8px;
  border-radius: 4px;
  border: 1px solid #ccc;
  font-size: 14px;
}

table {
  width: 90%;
  margin: 0 auto 20px;
  border-collapse: collapse;
  background-color: #ffffff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  border-radius: 8px;
  overflow: hidden;
}

th, td {
  padding: 12px;
  text-align: center;
  border-bottom: 1px solid #eee;
}

th {
  background-color: #ecf0f1;
  font-weight: bold;
}

.total {
  text-align: center;
  font-weight: bold;
  font-size: 16px;
  color: #27ae60;
}

.action-btn {
  background-color: #3498db;
  color: white;
  border: none;
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
}

.action-btn:hover {
  background-color: #2980b9;
}