.container-fluid{
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
}

.navbar {
  background-color: #000;
  padding: 15px 30px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-wrap: wrap;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: bold;
  color: #fff;
  letter-spacing: 1px;
}

.navbar-toggler {
  border-color: rgba(255, 255, 255, 0.5);
}

.navbar-toggler-icon {
  filter: invert(100%);
}

.collapse.navbar-collapse {
  justify-content: space-between;
}

.navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.8);
  padding: 10px 15px;
  font-size: 1rem;
  transition: color 0.3s ease, transform 0.3s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: #ffffff;
  background-color: #1e1e1e;
  border-radius: 5px;
  transform: scale(1.05);
}

.navbar-nav .nav-link.disabled {
  color: rgba(255, 255, 255, 0.3);
  pointer-events: none;
}

.btn-n {
  background-color: #fff;
  color: #000;
  border: none;
  border-radius: 5px;
  padding: 8px 16px;
  font-size: 0.95rem;
  font-weight: 400;
  transition: background-color 0.3s ease, transform 0.3s ease;
  margin: 2px;
}

.btn-n:hover {
  background-color: #f1f1f1;
  transform: scale(1.05);
}

.Sign-a {
  color: #000;
  text-decoration: none;
}

.Sign-a:hover {
  text-decoration: underline;
}

.icon-nn,
.icon-large-nn,
.avatar-nn {
  filter: invert(100%);
  transition: transform 0.3s ease;
}

.icon-nn:hover,
.icon-large-nn:hover,
.avatar-nn:hover {
  transform: scale(1.2);
}

@media (max-width: 991px) {
  .navbar-nav {
    text-align: center;
    margin-top: 15px;
  }

  .btn-n {
    margin-bottom: 10px;
  }
}