/* ============================================
   HEADER & MENU ENHANCEMENTS
   Optimized for Performance & UX
   ============================================ */

/* Header Container Optimizations */
header,
nav,
[class*="header"],
[class*="Header"],
[class*="navbar"],
[class*="Navbar"] {
  /* Performance: GPU acceleration */
  transform: translateZ(0);
  will-change: transform, opacity;
  backface-visibility: hidden;
}

/* Sticky Header Enhancement */
.sticky-header,
header.sticky,
nav.sticky {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Header Scroll Effect */
header.scrolled {
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.12);
}

/* Navigation Menu Optimizations */
nav ul,
[class*="menu"] ul,
[class*="Menu"] ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* Menu Items */
nav li,
[class*="menu"] li,
[class*="Menu"] li {
  position: relative;
}

nav a,
[class*="menu"] a,
[class*="Menu"] a {
  text-decoration: none;
  color: inherit;
  font-weight: 500;
  transition: all 0.2s ease;
  display: inline-block;
  position: relative;
  padding: 0.5rem 0;
}

/* Hover Effects */
nav a:hover,
[class*="menu"] a:hover {
  color: #2563eb;
  transform: translateY(-2px);
}

/* Active Link Indicator */
nav a.active::after,
[class*="menu"] a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #2563eb, #3b82f6);
  border-radius: 2px;
}

/* Mobile Menu Toggle Button */
.mobile-menu-toggle,
[class*="menu-toggle"],
[class*="MenuToggle"] {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
  transition: transform 0.3s ease;
}

.mobile-menu-toggle:active,
[class*="menu-toggle"]:active {
  transform: scale(0.95);
}

/* Mobile Menu Styles */
.mobile-menu,
[class*="mobile-menu"],
[class*="MobileMenu"] {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1000;
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  padding: 2rem;
}

.mobile-menu.open,
[class*="mobile-menu"].open {
  transform: translateX(0);
}

/* Mobile Menu Items */
.mobile-menu ul,
[class*="mobile-menu"] ul {
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  margin-top: 4rem;
}

.mobile-menu li,
[class*="mobile-menu"] li {
  width: 100%;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  padding: 1rem 0;
}

.mobile-menu a,
[class*="mobile-menu"] a {
  font-size: 1.125rem;
  width: 100%;
  padding: 0.75rem 0;
}

/* Logo Optimization */
.logo,
[class*="logo"],
[class*="Logo"] {
  display: flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.5rem;
  color: #2563eb;
  text-decoration: none;
  transition: transform 0.2s ease;
}

.logo:hover,
[class*="logo"]:hover {
  transform: scale(1.05);
}

.logo img,
[class*="logo"] img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

/* CTA Button in Header */
.header-cta,
[class*="header"] button[class*="cta"],
[class*="header"] a[class*="button"] {
  background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
  color: white;
  padding: 0.625rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

.header-cta:hover,
[class*="header"] button[class*="cta"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
  background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 100%);
}

/* Dropdown Menu Enhancements */
.dropdown,
[class*="dropdown"],
[class*="Dropdown"] {
  position: relative;
}

.dropdown-menu,
[class*="dropdown-menu"] {
  position: absolute;
  top: 100%;
  left: 0;
  background: white;
  border-radius: 0.5rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  padding: 0.5rem 0;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 100;
  margin-top: 0.5rem;
}

.dropdown:hover .dropdown-menu,
[class*="dropdown"]:hover [class*="dropdown-menu"] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li,
[class*="dropdown-menu"] li {
  padding: 0;
  border-bottom: none;
}

.dropdown-menu a,
[class*="dropdown-menu"] a {
  padding: 0.75rem 1.5rem;
  display: block;
  color: #374151;
  transition: all 0.2s ease;
}

.dropdown-menu a:hover,
[class*="dropdown-menu"] a:hover {
  background: #f3f4f6;
  color: #2563eb;
  transform: translateX(4px);
}

/* Search Bar in Header */
.header-search,
[class*="header"] [class*="search"] {
  position: relative;
  max-width: 300px;
}

.header-search input,
[class*="header"] [class*="search"] input {
  width: 100%;
  padding: 0.625rem 1rem 0.625rem 2.5rem;
  border: 2px solid #e5e7eb;
  border-radius: 0.5rem;
  transition: all 0.2s ease;
  font-size: 0.875rem;
}

.header-search input:focus,
[class*="header"] [class*="search"] input:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
  .mobile-menu-toggle,
  [class*="menu-toggle"] {
    display: block;
  }

  nav ul:not(.mobile-menu ul),
  [class*="menu"] ul:not([class*="mobile-menu"] ul) {
    display: none;
  }

  .header-cta,
  [class*="header"] button[class*="cta"] {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }

  .logo,
  [class*="logo"] {
    font-size: 1.25rem;
  }

  .logo img,
  [class*="logo"] img {
    height: 32px;
  }
}

/* Performance Optimizations */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Accessibility Enhancements */
nav a:focus,
[class*="menu"] a:focus,
button:focus {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
  border-radius: 0.25rem;
}

/* Skip to Content Link */
.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: #2563eb;
  color: white;
  padding: 0.5rem 1rem;
  text-decoration: none;
  z-index: 10000;
  border-radius: 0 0 0.25rem 0;
}

.skip-to-content:focus {
  top: 0;
}

/* Loading State */
.header-loading,
[class*="header"][class*="loading"] {
  opacity: 0.7;
  pointer-events: none;
}

/* Animation for Menu Items */
@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mobile-menu.open li,
[class*="mobile-menu"].open li {
  animation: slideInDown 0.3s ease forwards;
}

.mobile-menu.open li:nth-child(1) { animation-delay: 0.05s; }
.mobile-menu.open li:nth-child(2) { animation-delay: 0.1s; }
.mobile-menu.open li:nth-child(3) { animation-delay: 0.15s; }
.mobile-menu.open li:nth-child(4) { animation-delay: 0.2s; }
.mobile-menu.open li:nth-child(5) { animation-delay: 0.25s; }
.mobile-menu.open li:nth-child(6) { animation-delay: 0.3s; }

/* Header Container Layout */
.header-container,
[class*="header-container"] {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

/* Smooth Scroll Behavior */
html {
  scroll-behavior: smooth;
}

/* Header Background Variants */
header.glass,
header[class*="glass"] {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

header.solid,
header[class*="solid"] {
  background: #ffffff;
}

header.gradient,
header[class*="gradient"] {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}