/* Modern Navbar CSS */
:root {
  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --shadow-sm: rgba(0, 0, 0, 0.05);
  --shadow-md: rgba(0, 0, 0, 0.1);
}

.main-header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-100);
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 3px var(--shadow-sm);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--white);
}

.nav-brand {
  display: flex;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--gray-800);
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: 700;
  transition: all 0.3s ease;
  padding: 0.5rem 0;
  border-radius: 8px;
  letter-spacing: -0.025em;
}

.nav-logo:hover {
  color: var(--blue-600);
  transform: translateY(-1px);
}

.pak {
  display: flex;
  align-items: center;
}

.pak img {
  width: 140px;
  height: 36px;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.nav-logo:hover .pak img {
  transform: scale(1.05);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--gray-600);
  text-decoration: none;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  transition: all 0.3s ease;
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.nav-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
  transition: left 0.5s ease;
}

.nav-item:hover::before {
  left: 100%;
}

.nav-item:hover {
  color: var(--blue-600);
  background: var(--blue-50);
  border-color: var(--blue-100);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-sm);
}

.nav-item i {
  color: var(--blue-500);
  font-size: 1.1rem;
  transition: all 0.3s ease;
}

.nav-item:hover i {
  color: var(--blue-600);
  transform: scale(1.1);
}

.nav-item span {
  font-weight: 500;
  letter-spacing: 0.025em;
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-container {
    padding: 0.75rem 1rem;
    flex-direction: row;
    justify-content: space-between;
  }

  .nav-menu {
    gap: 0.5rem;
  }

  .nav-item {
    padding: 0.6rem;
    border-radius: 8px;
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
  }

  .nav-item span {
    display: none;
  }

  .nav-item i {
    font-size: 1.2rem;
  }

  .pak img {
    width: 100px;
    height: 28px;
  }

  .nav-logo {
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0.5rem 1rem;
  }

  .pak img {
    width: 90px;
    height: 26px;
  }

  .nav-item {
    padding: 0.5rem;
    min-width: 40px;
    min-height: 40px;
  }

  .nav-item i {
    font-size: 1.1rem;
  }

  .nav-menu {
    gap: 0.25rem;
  }
}

/* Enhanced hover effects */
.nav-item.mobile-icon {
  position: relative;
}

.nav-item.mobile-icon:hover {
  background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
}

/* Focus states for accessibility */
.nav-item:focus {
  outline: 2px solid var(--blue-500);
  outline-offset: 2px;
}

.nav-logo:focus {
  outline: 2px solid var(--blue-500);
  outline-offset: 2px;
}

/* Animation for logo */
@keyframes logoFloat {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-2px); }
}

.nav-logo:hover .pak img {
  animation: logoFloat 2s ease-in-out infinite;
}

/* Gradient text effect for brand name if needed */
.brand-text {
  background: linear-gradient(135deg, var(--blue-600), var(--blue-700));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Active state for navigation items */
.nav-item.active {
  color: var(--blue-600);
  background: var(--blue-50);
  border-color: var(--blue-200);
}

.nav-item.active i {
  color: var(--blue-600);
}