* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  margin: 0;
  padding: 20px;
  background: #f5f5f5;
  color: #333;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
}

h1 {
  margin: 0 0 20px 0;
  font-size: 24px;
  font-weight: 600;
}

.filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.filter-bar label {
  font-weight: 500;
}

.filter-bar select {
  padding: 8px 12px;
  font-size: 14px;
  border: 1px solid #ddd;
  border-radius: 4px;
  background: white;
  min-width: 200px;
}

.loading {
  padding: 20px;
  text-align: center;
  color: #666;
}

.error {
  padding: 15px;
  background: #fee;
  border: 1px solid #fcc;
  border-radius: 4px;
  color: #c00;
  margin-bottom: 20px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

thead {
  background: #f8f9fa;
}

th, td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid #eee;
}

th {
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  color: #666;
}

tbody tr:hover {
  background: #f8f9fa;
}

tbody tr:last-child td {
  border-bottom: none;
}

.no-name {
  color: #999;
  font-style: italic;
}

.ip-list {
  font-family: monospace;
  font-size: 13px;
}