* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #f5f5f5;
  color: #333;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

h1 {
  text-align: center;
  margin-bottom: 30px;
  color: #2c3e50;
}

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

h2 {
  margin-bottom: 15px;
  color: #34495e;
}

.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  margin-bottom: 4px;
  font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

button {
  background: #3498db;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
}

button:hover {
  background: #2980b9;
}

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

.controls input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
}

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

th, td {
  text-align: left;
  padding: 10px;
  border-bottom: 1px solid #eee;
}

th {
  background: #f8f9fa;
  font-weight: 600;
}

#addStatus {
  margin-top: 10px;
  color: #27ae60;
}