/**
 * Paul Aizpiri Catalogue Raisonné
 * Premium Navigation Enhancements
 * Museum-Quality Micro-interactions
 *
 * Features:
 * - Glass-morphism header with blur
 * - Premium link animations
 * - Enhanced logo hover effects
 * - Dark mode toggle with glow
 * - Scroll progress bar
 * - Full-screen mobile menu
 * - Breadcrumbs
 * - Current page indicators
 *
 * @version 3.0.0
 */

/* ============================================
   ENHANCED LOGO ANIMATIONS
   ============================================ */

.nav-logo,
.site-logo {
  transform-origin: center;
  transition: transform var(--transition-base),
              color var(--transition-fast),
              font-size var(--transition-slow) !important;
}

/* Premium logo hover - scale animation */
.nav-logo:hover,
.site-logo:hover {
  transform: scale(1.05);
  color: var(--color-accent) !important;
}

.nav-logo:active,
.site-logo:active {
  transform: scale(0.98);
}

/* Logo shrinks smoothly when scrolled */
.site-header.scrolled .nav-logo,
.site-header.scrolled .site-logo {
  font-size: var(--text-lg);
}

/* ============================================
   PREMIUM NAVIGATION LINK ANIMATIONS
   ============================================ */

.nav-links li,
.nav-menu li {
  position: relative;
}

.nav-link {
  position: relative;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-sm);
  display: inline-block;
  transition: color var(--transition-fast),
              letter-spacing var(--transition-base),
              background-color var(--transition-fast);
}

/* Hover effect - letter spacing micro-animation */
.nav-link:hover {
  color: var(--color-text-primary);
  letter-spacing: 0.08em;
  background-color: var(--color-surface-alt);
}

/* Active state with gold accent */
.nav-link.active {
  color: var(--color-text-primary);
  background-color: var(--color-surface-alt);
}

/* Premium underline animation - slide from left */
.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--color-gold) 0%,
    var(--color-secondary) 100%
  );
  transition: width var(--transition-slow);
}

.nav-link:hover::before {
  width: 100%;
}

/* Elegant underline for active state - expand from center */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-base),
              left var(--transition-base);
  transform: translateX(-50%);
  box-shadow: 0 2px 8px rgba(196, 163, 90, 0.3);
}

.nav-link.active::after {
  width: calc(100% - var(--space-md) * 2);
}

/* Current page indicator dot */
.nav-link.active::before {
  display: none;
}

.nav-links li.current-page .nav-link::before {
  content: '•';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: auto;
  height: auto;
  background: none;
  color: var(--color-accent);
  font-size: var(--text-lg);
  line-height: 1;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: translateX(-50%) scale(1);
  }
  50% {
    opacity: 0.6;
    transform: translateX(-50%) scale(1.2);
  }
}

/* ============================================
   ENHANCED DARK MODE TOGGLE
   ============================================ */

.dark-mode-toggle {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: var(--border-width-thin) solid var(--color-border);
  border-radius: var(--border-radius-full);
  cursor: pointer;
  color: var(--color-text-secondary);
  position: relative;
  transition: all var(--transition-base);
  overflow: hidden;
}

/* Glow effect on hover */
.dark-mode-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: var(--color-surface-alt);
  box-shadow: 0 0 20px rgba(196, 163, 90, 0.2),
              inset 0 0 10px rgba(196, 163, 90, 0.1);
}

/* Icon animations with smooth rotation */
.dark-mode-toggle svg {
  width: 20px;
  height: 20px;
  position: absolute;
  transition: opacity var(--transition-base),
              transform var(--transition-slower);
}

.dark-mode-toggle .sun-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.dark-mode-toggle .moon-icon {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

[data-theme="dark"] .dark-mode-toggle .sun-icon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

[data-theme="dark"] .dark-mode-toggle .moon-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* Tooltip showing current mode */
.dark-mode-toggle::after {
  content: attr(data-mode);
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background-color: var(--color-surface);
  color: var(--color-text-primary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--text-xs);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast),
              transform var(--transition-fast),
              visibility var(--transition-fast);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  pointer-events: none;
}

.dark-mode-toggle:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ============================================
   SCROLL PROGRESS BAR
   ============================================ */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: var(--z-scroll-progress);
  pointer-events: none;
}

.scroll-progress-bar {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--color-gold) 0%,
    var(--color-secondary) 50%,
    var(--color-accent) 100%
  );
  width: 0%;
  transition: width 150ms ease-out;
  box-shadow: 0 2px 8px rgba(196, 163, 90, 0.4);
  border-radius: 0 2px 2px 0;
}

/* Subtle glow effect */
.scroll-progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 40px;
  height: 100%;
  background: linear-gradient(
    -90deg,
    rgba(255, 255, 255, 0.6) 0%,
    transparent 100%
  );
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0%, 100% {
    opacity: 0.6;
  }
  50% {
    opacity: 1;
  }
}

/* ============================================
   ENHANCED MOBILE MENU
   ============================================ */

/* Full-screen overlay with gradient backdrop */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(26, 26, 46, 0.85) 0%,
    rgba(44, 95, 124, 0.75) 100%
  );
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-slow),
              visibility var(--transition-slow);
  z-index: var(--z-mobile-menu-overlay);
  backdrop-filter: blur(12px) saturate(150%);
  -webkit-backdrop-filter: blur(12px) saturate(150%);
}

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

/* Mobile menu with slide-in animation */
.nav-links.mobile-open,
.nav-menu.mobile-open {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  right: 0;
  width: min(340px, 85vw);
  height: 100vh;
  background: var(--color-surface);
  padding: calc(var(--header-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
  gap: var(--space-sm);
  z-index: var(--z-mobile-menu);
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.2);
  animation: slide-in-right var(--transition-slower) cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@keyframes slide-in-right {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Menu items with staggered animation */
.nav-links.mobile-open .nav-link,
.nav-menu.mobile-open .nav-link {
  font-size: var(--text-lg);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--border-radius-md);
  width: 100%;
  text-align: left;
  opacity: 0;
  animation: fade-in-up var(--transition-base) forwards;
}

.nav-links.mobile-open li:nth-child(1) .nav-link { animation-delay: 50ms; }
.nav-links.mobile-open li:nth-child(2) .nav-link { animation-delay: 100ms; }
.nav-links.mobile-open li:nth-child(3) .nav-link { animation-delay: 150ms; }
.nav-links.mobile-open li:nth-child(4) .nav-link { animation-delay: 200ms; }
.nav-links.mobile-open li:nth-child(5) .nav-link { animation-delay: 250ms; }
.nav-links.mobile-open li:nth-child(6) .nav-link { animation-delay: 300ms; }
.nav-links.mobile-open li:nth-child(7) .nav-link { animation-delay: 350ms; }

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Enhanced hamburger with rotation animation */
.mobile-menu-toggle {
  transition: transform var(--transition-base),
              background-color var(--transition-fast);
}

.mobile-menu-toggle:hover {
  background-color: var(--color-surface-alt);
  transform: scale(1.05);
}

.mobile-menu-toggle[aria-expanded="true"] {
  transform: rotate(90deg);
}

.mobile-menu-toggle .hamburger,
.mobile-menu-toggle .hamburger::before,
.mobile-menu-toggle .hamburger::after {
  transition: all var(--transition-base) cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ============================================
   BREADCRUMBS
   ============================================ */

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md) 0;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.breadcrumbs ol {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.breadcrumbs a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast),
              transform var(--transition-fast);
  display: inline-block;
}

.breadcrumbs a:hover {
  color: var(--color-accent);
  transform: translateX(2px);
}

/* Elegant separator */
.breadcrumbs li:not(:last-child)::after {
  content: '›';
  color: var(--color-text-muted);
  font-size: var(--text-base);
  margin-left: var(--space-xs);
  opacity: 0.5;
}

.breadcrumbs li:last-child {
  color: var(--color-text-primary);
  font-weight: var(--weight-medium);
}

/* ============================================
   ACCESSIBILITY - REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .nav-logo,
  .site-logo,
  .nav-link,
  .dark-mode-toggle,
  .scroll-progress-bar,
  .mobile-menu-overlay,
  .nav-links.mobile-open,
  .nav-menu.mobile-open {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .nav-link::before,
  .nav-link::after,
  .scroll-progress-bar::after {
    animation: none !important;
  }

  .nav-logo:hover,
  .site-logo:hover {
    transform: none;
  }
}

/* ============================================
   MOBILE RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {
  /* Simplify animations on mobile */
  .nav-link::before {
    display: none;
  }

  /* Larger touch targets */
  .mobile-menu-toggle,
  .dark-mode-toggle {
    width: 48px;
    height: 48px;
  }

  /* Full-width mobile menu items */
  .nav-links.mobile-open .nav-link,
  .nav-menu.mobile-open .nav-link {
    padding: var(--space-lg);
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  .scroll-progress,
  .mobile-menu-overlay,
  .dark-mode-toggle,
  .mobile-menu-toggle {
    display: none !important;
  }

  .site-header {
    position: static;
    background: white;
    border-bottom: 1px solid black;
  }
}