/* CCAB Navigation System - Digital Museum Aesthetic */

@import url('https://fonts.googleapis.com/css2?family=Crimson+Text:ital,wght@0,400;0,600;1,400&family=JetBrains+Mono:wght@300;400;500&family=Bebas+Neue&display=swap');

:root {
  /* Sophisticated dark theme with jewel-tone accents */
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-tertiary: #1a2332;
  --bg-overlay: rgba(10, 14, 26, 0.95);

  /* Text hierarchy */
  --text-primary: #e8e6e1;
  --text-secondary: #9ca3af;
  --text-accent: #fbbf24;
  --text-muted: #6b7280;

  /* Section colors - jewel tones */
  --creative: #e11d48;      /* Ruby */
  --physics: #0891b2;        /* Sapphire */
  --abm: #a855f7;           /* Amethyst */
  --essential: #14b8a6;     /* Teal - Essential Simulations */
  --data: #10b981;          /* Emerald */
  --graphics: #f97316;      /* Amber */
  --advanced: #ec4899;      /* Rose */

  /* Typography */
  --font-display: 'Bebas Neue', sans-serif;
  --font-heading: 'Crimson Text', serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 5rem;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Effects */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 24px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(251, 191, 36, 0.1);

  /* Layout */
  --max-width: 1440px;
  --sidebar-width: 280px;
  --header-height: 72px;
}

/* Universal Navigation Header */
.ccab-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: linear-gradient(180deg, var(--bg-primary) 0%, rgba(10, 14, 26, 0.9) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1000;
  animation: slideDown 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
}

/* Logo and Home Link */
.nav-home {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-sm);
  text-decoration: none;
  transition: var(--transition-base);
  position: relative;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, var(--text-accent) 0%, var(--creative) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-tagline {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 300;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeInRight 0.8s 0.3s forwards;
}

@keyframes fadeInRight {
  to {
    opacity: 1;
    transform: translateX(0);
  }
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
}

.nav-home:hover .nav-logo {
  background: linear-gradient(135deg, var(--creative) 0%, var(--physics) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 30px rgba(225, 29, 72, 0.3);
}

/* Breadcrumb Navigation */
.nav-breadcrumb {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin: 0 var(--spacing-xl);
  padding-top: 14px !important;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-secondary);
  overflow: hidden;
}

.nav-breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
  position: relative;
  padding: 4px 8px;
  border-radius: 4px;
}

.nav-breadcrumb a:hover {
  color: var(--text-accent);
  background: rgba(251, 191, 36, 0.1);
}

.nav-breadcrumb .separator {
  color: var(--text-muted);
  opacity: 0.5;
  font-size: 0.75rem;
}

.nav-breadcrumb .current {
  color: var(--text-primary);
  font-weight: 500;
}

/* Navigation Actions */
.nav-actions {
  display: none; /* Hidden for cleaner interface */
  gap: var(--spacing-md);
}

.nav-search,
.nav-menu {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 1.25rem;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* SVG icons in navigation buttons */
.nav-search svg,
.nav-menu svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  transition: transform var(--transition-base);
}

.nav-search:hover,
.nav-menu:hover {
  background: rgba(251, 191, 36, 0.1);
  border-color: var(--text-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(251, 191, 36, 0.2);
}

.nav-search:hover svg {
  transform: scale(1.1);
}

.nav-menu:hover svg {
  transform: scale(1.1);
}

.nav-search:active,
.nav-menu:active {
  transform: translateY(0);
}

/* Quick Jump Navigation */
.quick-jump {
  position: fixed;
  left: var(--spacing-lg);
  top: calc(var(--header-height) + var(--spacing-lg));
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  padding: var(--spacing-lg);
  z-index: 900;
  animation: fadeInLeft 0.8s 0.4s both;
  max-height: calc(100vh - var(--header-height) - var(--spacing-xl));
  overflow-y: auto;
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.quick-jump h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
}

.quick-jump ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.quick-jump li {
  margin-bottom: var(--spacing-xs);
}

.quick-jump a {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 8px;
  transition: all var(--transition-base);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  position: relative;
  overflow: hidden;
}

.quick-jump a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: currentColor;
  transform: scaleY(0);
  transition: transform var(--transition-base);
}

.quick-jump a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  padding-left: calc(var(--spacing-md) + 8px);
}

.quick-jump a:hover::before {
  transform: scaleY(1);
}

/* Section-specific colors */
.quick-jump a[href="#creative"]:hover { color: var(--creative); }
.quick-jump a[href="#physics"]:hover { color: var(--physics); }
.quick-jump a[href="#abm"]:hover { color: var(--abm); }
.quick-jump a[href="#essential"]:hover { color: var(--essential); }
.quick-jump a[href="#data"]:hover { color: var(--data); }
.quick-jump a[href="#graphics"]:hover { color: var(--graphics); }
.quick-jump a[href="#advanced"]:hover { color: var(--advanced); }

.quick-jump .stats {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.quick-jump .stats strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--text-accent);
  letter-spacing: 0.02em;
  margin-bottom: var(--spacing-xs);
}

.quick-jump .stats span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Gallery Header */
.gallery-header {
  padding: calc(var(--header-height) + var(--spacing-xl)) var(--spacing-lg) var(--spacing-xl);
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.gallery-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: -50%;
  right: -50%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(251, 191, 36, 0.05) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.gallery-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: 0.02em;
  color: var(--text-primary);
  margin: 0;
  text-transform: uppercase;
  animation: fadeInUp 0.8s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.gallery-subtitle {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--text-secondary);
  margin: var(--spacing-sm) 0 var(--spacing-lg);
  animation: fadeInUp 0.8s 0.2s both;
}

.gallery-stats {
  display: flex;
  gap: var(--spacing-lg);
  animation: fadeInUp 0.8s 0.4s both;
}

.stat-item {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.stat-item::before {
  content: attr(data-icon);
  font-size: 1.25rem;
}

/* Demo Navigation */
.demo-navigation {
  position: fixed;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-md);
  background: var(--bg-overlay);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--spacing-md);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-lg);
  z-index: 900;
  animation: slideUp 0.6s both;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.demo-nav-prev,
.demo-nav-gallery,
.demo-nav-next {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  transition: all var(--transition-base);
}

.demo-nav-prev:hover,
.demo-nav-gallery:hover,
.demo-nav-next:hover {
  background: rgba(251, 191, 36, 0.1);
  border-color: var(--text-accent);
  color: var(--text-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(251, 191, 36, 0.2);
}

.demo-nav-gallery {
  background: rgba(251, 191, 36, 0.1);
  border-color: rgba(251, 191, 36, 0.3);
  color: var(--text-accent);
}

/* Search Container */
.search-container {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-overlay);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  animation: fadeIn 0.3s both;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.search-container input[type="search"] {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 1.25rem;
  outline: none;
  transition: all var(--transition-base);
}

.search-container input[type="search"]:focus {
  border-color: var(--text-accent);
  box-shadow: 0 0 0 4px rgba(251, 191, 36, 0.1);
}

.search-filters {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  margin: var(--spacing-lg) 0;
}

.filter-chip {
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-base);
}

.filter-chip:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.filter-chip.active {
  background: rgba(251, 191, 36, 0.2);
  border-color: var(--text-accent);
  color: var(--text-accent);
}

.search-results {
  flex: 1;
  overflow-y: auto;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-md);
  padding: var(--spacing-lg) 0;
}

/* Mobile Responsive */
@media (max-width: 1024px) {
  .quick-jump {
    display: none;
  }

  .nav-tagline {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav-breadcrumb {
    display: none;
  }

  .demo-navigation {
    bottom: 0;
    left: 0;
    right: 0;
    transform: none;
    border-radius: 0;
    border-bottom: none;
  }

  .search-results {
    grid-template-columns: 1fr;
  }
}

/* Gallery Back Link */
.gallery-back {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  transition: all var(--transition-base);
}

.gallery-back:hover {
  background: rgba(251, 191, 36, 0.1);
  border-color: var(--text-accent);
  color: var(--text-accent);
  transform: translateX(-4px);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Loading Animation */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.loading {
  background: linear-gradient(90deg,
    var(--bg-secondary) 25%,
    rgba(255, 255, 255, 0.1) 50%,
    var(--bg-secondary) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}