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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 400px;
}

.form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  color: #333;
  font-weight: 500;
}

input[type="email"],
input[type="password"] {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid #e1e5e9;
  border-radius: 5px;
  font-size: 1rem;
  transition: border-color 0.3s;
}

input[type="email"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: #667eea;
}

.btn {
  width: 100%;
  padding: 0.75rem;
  background: #667eea;
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.3s;
}

.btn:hover {
  background: #5a6fd8;
}

.alert {
  padding: 0.75rem;
  margin-bottom: 1rem;
  border-radius: 5px;
}

.alert-error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.alert-success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.text-center {
  text-align: center;
}

.mt-1 {
  margin-top: 1rem;
}

a {
  color: #667eea;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

h1,
h2 {
  color: #333;
  margin-bottom: 1.5rem;
}

.dashboard {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 600px;
}

.user-info {
  background: #f8f9fa;
  padding: 1rem;
  border-radius: 5px;
  margin-bottom: 1rem;
}

.logout-btn {
  background: #dc3545;
  margin-top: 1rem;
}

.logout-btn:hover {
  background: #c82333;
}