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

body {
  font-family: Arial, sans-serif;
  background: #f3f4f6;
  color: #333;
}

header {
  background: #1f2937;
  color: white;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

nav {
  display: flex;
  gap: 15px;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  padding: 8px 14px;
  border-radius: 8px;
  transition: 0.3s;
}

nav a:hover {
  background: #374151;
}

main {
  min-height: calc(100vh - 100px);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.user-card {
  background: white;
  max-width: 450px;
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  text-align: center;
}

.user-card img {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  margin-top: 30px;
  border: 4px solid #2563eb;
}

.user-info {
  padding: 25px;
}

.user-info h2 {
  margin-bottom: 15px;
}

.user-info p {
  margin-bottom: 10px;
  line-height: 1.6;
}

.user-info strong {
  color: #111827;
}

.quote {
  font-style: italic;
  color: #2563eb;
  margin-top: 15px;
}

@media (max-width: 768px) {
  header {
    flex-direction: column;
    text-align: center;
  }

  nav {
    justify-content: center;
    flex-wrap: wrap;
  }
}