/**
 * Enhanced Header Styles - Moon Memory Website
 * Sticky header with advanced effects
 */

/* Header Base Styles */
#mainHeader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  background: rgba(11, 11, 15, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  will-change: transform, background;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
}

/* Scrolled State */
#mainHeader.scrolled {
  background: rgba(11, 11, 15, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

/* Logo Container - Large Size */
.logo-container {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 3px solid #D4AF37;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.2), rgba(212, 175, 55, 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
  will-change: width, height, transform;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
}

/* Logo Container Scrolled - Compact */
#mainHeader.scrolled .logo-container {
  width: 70px;
  height: 70px;
  border-width: 2px;
}

/* Logo Image */
.logo-container img {
  width: 70px;
  height: 70px;
  object-fit: contain;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: width, height;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform: translateZ(0);
  display: block;
  max-width: 100%;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

#mainHeader.scrolled .logo-container img {
  width: 50px;
  height: 50px;
}

/* Logo Hover Effect */
.logo-container:hover {
  transform: scale(1.05) rotate(5deg);
  box-shadow: 0 0 30px rgba(212, 175, 55, 0.5);
  border-color: #f0c860;
}

/* Logo Pulse Animation */
@keyframes logo-pulse {
  0%, 100% {
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.3);
  }
  50% {
    box-shadow: 0 0 35px rgba(212, 175, 55, 0.6);
  }
}

.logo-container {
  animation: logo-pulse 3s ease-in-out infinite;
}

/* Logo Text */
.logo-text h1 {
  font-size: 1.25rem;
  transition: all 0.3s ease;
}

.logo-text p {
  transition: all 0.3s ease;
}

#mainHeader.scrolled .logo-text h1 {
  font-size: 1.125rem;
}

#mainHeader.scrolled .logo-text p {
  font-size: 0.8125rem;
}

/* Navigation Links - Active State */
nav a {
  position: relative;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #D4AF37, #f0c860);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  transform: translateX(-50%);
  border-radius: 2px;
}

nav a:hover::after {
  width: 100%;
}

/* Active Link */
nav a.active {
  color: #D4AF37 !important;
  font-weight: 600;
}

nav a.active::after {
  width: 100%;
  background: linear-gradient(90deg, #D4AF37, #f0c860);
}

/* CTA Button Enhancement */
.header-cta {
  position: relative;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.header-cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.header-cta:hover::before {
  width: 300px;
  height: 300px;
}

/* Mobile Menu Enhanced */
#mobileMenu {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  transform: translateX(100%);
  opacity: 0;
}

#mobileMenu.active {
  transform: translateX(0);
  opacity: 1;
}

/* Mobile Menu Toggle Animation */
#mobileMenuToggle {
  transition: all 0.3s ease;
}

#mobileMenuToggle:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.05);
}

#mobileMenuToggle svg {
  transition: all 0.3s ease;
}

#mobileMenuToggle[aria-expanded="true"] svg {
  transform: rotate(90deg);
}

/* Mobile Menu Backdrop */
.mobile-menu-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 40;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.mobile-menu-backdrop.active {
  opacity: 1;
  visibility: visible;
}

/* Smooth transitions for all header elements */
#mainHeader * {
  transition-property: all;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  .logo-container {
    width: 80px;
    height: 80px;
  }
  
  .logo-container img {
    width: 56px;
    height: 56px;
  }
  
  #mainHeader.scrolled .logo-container {
    width: 60px;
    height: 60px;
  }
  
  #mainHeader.scrolled .logo-container img {
    width: 42px;
    height: 42px;
  }
}

@media (max-width: 640px) {
  .logo-container {
    width: 70px;
    height: 70px;
    border-width: 2px;
  }
  
  .logo-container img {
    width: 50px;
    height: 50px;
  }
  
  #mainHeader.scrolled .logo-container {
    width: 56px;
    height: 56px;
  }
  
  #mainHeader.scrolled .logo-container img {
    width: 40px;
    height: 40px;
  }
  
  .logo-text h1 {
    font-size: 1rem;
  }
  
  .logo-text p {
    font-size: 0.75rem;
  }
}

/* Performance optimizations */
#mainHeader,
.logo-container,
nav a {
  will-change: transform;
  transform: translateZ(0);
}

/* Prevent layout shift and jank */
html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

/* Hide scrollbar but keep functionality */
/* For Chrome, Safari, Edge */
::-webkit-scrollbar {
  width: 0px;
  height: 0px;
  background: transparent;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: transparent;
}

/* For Firefox */
* {
  scrollbar-width: none;
  scrollbar-color: transparent transparent;
}

/* For IE and Edge Legacy */
body {
  -ms-overflow-style: none;
  min-height: 100vh;
  position: relative;
}

/* Prevent FOUC (Flash of Unstyled Content) */
html.loading body,
body.loading {
  overflow: hidden !important;
  position: fixed;
  width: 100%;
}

/* Smooth page load */
main {
  transition: opacity 0.3s ease;
}

/* Prevent scroll jump on page load */
html:not(.page-ready) {
  overflow-x: hidden;
}

/* Preloader optimization */
#preloader {
  will-change: opacity, visibility;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* Smooth content reveal */
body:not(.loaded) main,
body:not(.loaded) header:not(#preloader),
body:not(.loaded) footer {
  visibility: hidden;
  pointer-events: none;
}

body.loaded main,
body.loaded header,
body.loaded footer {
  visibility: visible;
  pointer-events: auto;
}

/* Prevent image layout shift */
img {
  display: block;
  max-width: 100%;
  height: auto;
}

img[width][height] {
  height: auto;
}

/* Image loading optimization */
img:not([src]) {
  visibility: hidden;
}

/* Smooth image fade-in (except critical images) */
img:not(#preloader img):not(.logo-container img):not(.logo-image) {
  opacity: 0;
  transition: opacity 0.3s ease;
}

img.loaded,
img[style*="opacity: 1"],
#preloader img,
.logo-container img,
.logo-image {
  opacity: 1 !important;
}

/* ============================================
   Language Switcher Styles
   ============================================ */

/* Language Button */
.language-btn {
  position: relative;
  cursor: pointer;
  overflow: hidden;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.language-btn:active {
  transform: scale(0.95);
}

.language-btn svg {
  transition: transform 0.3s ease;
}

.language-btn:hover svg {
  transform: rotate(5deg) scale(1.1);
}

/* Language transition animation */
[data-i18n] {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

/* RTL/LTR specific styles */
html[dir="rtl"] {
  direction: rtl;
}

html[dir="ltr"] {
  direction: ltr;
}

/* Font adjustments for English */
body.lang-en {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body.lang-ar {
  font-family: 'Tajawal', 'Cairo', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Logo text direction fix */
html[dir="ltr"] .logo-text {
  text-align: left;
}

html[dir="rtl"] .logo-text {
  text-align: right;
}

/* Navigation alignment */
html[dir="ltr"] nav {
  flex-direction: row;
}

html[dir="rtl"] nav {
  flex-direction: row-reverse;
}

/* Button ripple effect for language switcher */
.language-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(212, 175, 55, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.language-btn:active::before {
  width: 200px;
  height: 200px;
}

/* Smooth language switch animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.lang-switching [data-i18n] {
  animation: fadeInUp 0.4s ease;
}