body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f4f4f9;
  color: #333;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
}

.container {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 800px;
}

h1,
h2,
h3 {
  text-align: center;
  color: #2c3e50;
}

.card {
  margin-bottom: 2rem;
  padding: 1.5rem;
  border: 1px solid #e1e4e8;
  border-radius: 6px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

input {
  padding: 0.8rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
}

button {
  padding: 0.8rem;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #2980b9;
}

.btn-danger {
  background-color: #e74c3c;
}

.btn-danger:hover {
  background-color: #c0392b;
}

.btn-secondary {
  background-color: #95a5a6;
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.9rem;
}

/* Tabs */
.tabs {
  display: flex;
  margin-bottom: 1rem;
}

.tab {
  flex: 1;
  background-color: #f1f1f1;
  color: #333;
  border-radius: 0;
}

.tab.active {
  background-color: #3498db;
  color: white;
}

.nav-buttons {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  justify-content: center;
}

.badge {
  font-size: 0.8rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background-color: #f1c40f;
  color: #333;
  vertical-align: middle;
}

#loginStatus,
#usersList,
#vpnDevices,
#adminsList,
#adminLogs {
  margin-top: 1rem;
  word-wrap: break-word;
}

.item-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px;
  border-bottom: 1px solid #eee;
}