header {
  background: var(--bg-secondary);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1.2em;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--accent-primary);
  font-weight: 700;
  font-size: 1.5rem;
}

.logo-icon {
  margin-right: 10px;
  /* font-size: 1.8rem; */
  color: var(--accent-primary);
}

.nav-links {
  display: flex;
  list-style: none;
}

.nav-links li {
  position: relative;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-primary);
  padding: 25px 20px;
  display: block;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover {
  color: var(--text-secondary);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background: var(--accent-hover);
  transition: var(--transition);
  transform: translateX(-50%);
}

.nav-links a:hover::after {
  width: 100%;
}

.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: white;
  min-width: 200px;
  box-shadow: var(--shadow);
  border-radius: 0 0 8px 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 100;
}

.dropdown li {
  width: 100%;
}

.dropdown a {
  padding: 15px 20px;
}

.nav-links li:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown a:hover {
  background: #f1f1f1;
}

.mobile-auth {
  display: none;
}

.auth-buttons {
  display: flex;
  gap: 15px;
}

.btn {
  padding: 10px 20px;
  border-radius: 5px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-login {
  background: transparent;
  color: var(--border-accent);
  border: 1px solid var(--border-accent);
}

.btn-login:hover {
  background: var(--accent-hover);
  color: white;
}

.btn-signup {
  background: var(--border-accent);
  color: white;
}

.btn-signup:hover {
  background: var(--bg-tertiary);
  transform: translateY(-2px);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 5px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--bg-primary);
  margin: 3px 0;
  transition: var(--transition);
  border-radius: 2px;
}

/* Mobile Styles */
@media (max-width: 900px) {
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: white;
    flex-direction: column;
    align-items: center;
    padding: 20px 0;
    box-shadow: var(--shadow);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links li {
    width: 100%;
    text-align: center;
  }

  .nav-links a {
    padding: 15px 20px;
  }

  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: #f8f9fa;
    display: none;
    width: 100%;
  }

  .nav-links li:hover .dropdown {
    display: block;
  }

  .auth-buttons {
    display: none;
  }

  .mobile-auth {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 20px;
    width: 100%;
  }

  .mobile-auth .btn {
    width: 100%;
    text-align: center;
  }
}