header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 32px;
  background-color: #161b22;
  border-bottom: 1px solid #30363d;
  box-sizing: border-box;
  width: 100%;
}

.brand-logo {
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
  font-size: 1.2rem;
}

.nav-links {
  display: flex;
  gap: 20px;
  align-items: center;
}

.nav-links a {
  color: #8b949e;
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: #ffffff;
}

.nav-login-btn {
  background: transparent;
  color: #c9d1d9;
  border: 1px solid #30363d;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background-color 0.2s ease;
}

.nav-login-btn:hover {
  background-color: #21262d;
  color: #ffffff;
}