/* ============================================
   LLM-Whisperer v2 - Complete Redesign
   Modern, Responsive, Animated, Cached
   ============================================ */

/* CSS Variables */
:root {
  /* Color System */
  --bg-0: #0a0a0f;
  --bg-1: #111118;
  --bg-2: #1a1a25;
  --bg-3: #232330;
  --bg-4: #2d2d3d;
  --surface: #1a1a25;
  --surface-hover: #232330;
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.15);

  --text-0: #ffffff;
  --text-1: #e4e4e7;
  --text-2: #a1a1aa;
  --text-3: #71717a;
  --text-4: #52525b;

  --accent: #8b5cf6;
  --accent-light: #a78bfa;
  --accent-dark: #7c3aed;
  --accent-glow: rgba(139,92,246,0.3);
  --accent-bg: rgba(139,92,246,0.08);

  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #6366f1 50%, #06b6d4 100%);
  --gradient-hero: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(139,92,246,0.15), transparent);
  --gradient-card: linear-gradient(180deg, rgba(139,92,246,0.05) 0%, transparent 100%);
  --gradient-border: linear-gradient(135deg, rgba(139,92,246,0.3) 0%, rgba(6,182,212,0.2) 100%);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(139,92,246,0.15);

  /* Transitions */
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-expo: cubic-bezier(0.16, 1, 0.3, 1);

  /* Z-index */
  --z-nav: 100;
  --z-modal: 200;
  --z-toast: 300;
  --z-overlay: 90;

  /* Container */
  --container: 1400px;
  --container-narrow: 960px;
  --nav-height: 72px;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-0);
  color: var(--text-1);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Selection */
::selection {
  background: rgba(139,92,246,0.3);
  color: var(--text-0);
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-1); }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--bg-4); }

/* ============================================
   Loading Screen
   ============================================ */
.loading-screen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg-0);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  transition: opacity 0.6s var(--ease-expo), visibility 0.6s;
}
.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-ring {
  width: 64px;
  height: 64px;
  position: relative;
}
.loader-ring svg {
  width: 100%;
  height: 100%;
  animation: loaderSpin 1.5s linear infinite;
}
.loader-track { stroke: var(--bg-3); }
.loader-head {
  stroke: url(#loaderGrad);
  stroke-dasharray: 157;
  stroke-dashoffset: 157;
  animation: loaderDash 1.5s ease-in-out infinite;
}
@keyframes loaderSpin { to { transform: rotate(360deg); } }
@keyframes loaderDash {
  0% { stroke-dashoffset: 157; }
  50% { stroke-dashoffset: 39.25; }
  100% { stroke-dashoffset: 157; }
}

.loader-text {
  font-size: 0.875rem;
  color: var(--text-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ============================================
   Navbar
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  background: rgba(10,10,15,0.8);
  backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s var(--ease-smooth);
}
.nav.scrolled {
  background: rgba(10,10,15,0.95);
  border-bottom-color: var(--border-hover);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  box-shadow: 0 0 20px rgba(139,92,246,0.3);
}
.nav-logo-icon svg {
  width: 20px;
  height: 20px;
  color: white;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.nav-logo-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-0);
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nav-logo-tag {
  font-size: 0.65rem;
  color: var(--text-3);
  font-weight: 500;
  letter-spacing: 0.05em;
}

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--text-2);
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s var(--ease-smooth);
  position: relative;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--text-0);
  background: var(--bg-2);
}
.nav-link.active {
  color: var(--accent-light);
  background: var(--accent-bg);
}
.nav-link svg {
  width: 16px;
  height: 16px;
  opacity: 0.7;
  transition: opacity 0.2s;
}
.nav-link:hover svg,
.nav-link.active svg { opacity: 1; }

/* Nav Right */
.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Search */
.nav-search {
  position: relative;
}
.nav-search input {
  width: 220px;
  padding: var(--space-2) var(--space-3) var(--space-2) 36px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-1);
  font-size: 0.8125rem;
  outline: none;
  transition: all 0.3s var(--ease-smooth);
}
.nav-search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  width: 280px;
}
.nav-search input::placeholder { color: var(--text-4); }
.nav-search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-4);
  pointer-events: none;
  width: 16px;
  height: 16px;
}

/* Nav Buttons */
.nav-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text-2);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all 0.2s var(--ease-smooth);
  flex-shrink: 0;
}
.nav-btn:hover {
  background: var(--bg-3);
  color: var(--text-0);
  border-color: var(--border-hover);
}
.nav-btn svg { width: 16px; height: 16px; }

.nav-github {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  display: grid;
  place-items: center;
  color: white;
  transition: all 0.2s var(--ease-smooth);
  flex-shrink: 0;
}
.nav-github:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}
.nav-github svg { width: 18px; height: 18px; }

/* Mobile Menu Toggle */
.nav-mobile-toggle { display: none; }

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: rgba(0,0,0,0.5);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s var(--ease-smooth);
}
.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}
.mobile-menu-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(320px, 85vw);
  height: 100%;
  background: var(--bg-1);
  border-left: 1px solid var(--border);
  padding: var(--space-6);
  padding-top: calc(var(--nav-height) + var(--space-6));
  transform: translateX(100%);
  transition: transform 0.4s var(--ease-expo);
  overflow-y: auto;
}
.mobile-menu.open .mobile-menu-panel {
  transform: translateX(0);
}
.mobile-menu-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  list-style: none;
}
.mobile-menu-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--text-2);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s;
}
.mobile-menu-link:hover,
.mobile-menu-link.active {
  background: var(--bg-2);
  color: var(--text-0);
}
.mobile-menu-link svg {
  width: 20px;
  height: 20px;
  opacity: 0.7;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  padding: calc(var(--nav-height) + var(--space-24)) var(--space-6) var(--space-24);
  max-width: var(--container);
  margin: 0 auto;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--accent-bg);
  border: 1px solid rgba(139,92,246,0.15);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent-light);
  margin-bottom: var(--space-8);
  backdrop-filter: blur(10px);
}
.hero-badge svg {
  width: 14px;
  height: 14px;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
  background: linear-gradient(135deg, #fff 0%, #a78bfa 50%, #67e8f9 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-3);
  max-width: 640px;
  margin: 0 auto var(--space-12);
  line-height: 1.7;
}

/* Stats */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  max-width: 700px;
  margin: 0 auto;
}

.stat-card {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-align: center;
  transition: all 0.3s var(--ease-smooth);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity 0.3s;
}
.stat-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.stat-card:hover::before { opacity: 1; }

.stat-value {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  position: relative;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--text-3);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  position: relative;
}

/* ============================================
   Section Layout
   ============================================ */
.main-content {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  margin-bottom: var(--space-24);
  position: relative;
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.section-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.section-title-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--accent-bg);
  border: 1px solid rgba(139,92,246,0.1);
  display: grid;
  place-items: center;
  color: var(--accent-light);
  flex-shrink: 0;
}
.section-title-icon svg { width: 20px; height: 20px; }

.section-title-text h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-0);
  line-height: 1.3;
}
.section-title-text p {
  font-size: 0.875rem;
  color: var(--text-3);
  margin-top: var(--space-1);
}

.section-count {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-4);
  background: var(--bg-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

/* ============================================
   Grid System
   ============================================ */
.grid {
  display: grid;
  gap: var(--space-4);
}
.grid-1 { grid-template-columns: 1fr; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

/* ============================================
   Cards
   ============================================ */
.card {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: all 0.3s var(--ease-smooth);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}
.card:hover::before { opacity: 1; }

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-2);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--accent-light);
  margin-bottom: var(--space-4);
  position: relative;
  transition: all 0.3s;
}
.card:hover .card-icon {
  background: var(--accent-bg);
  border-color: rgba(139,92,246,0.2);
}
.card-icon svg { width: 20px; height: 20px; }

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-0);
  margin-bottom: var(--space-2);
  position: relative;
  line-height: 1.4;
}

.card-desc {
  font-size: 0.8125rem;
  color: var(--text-3);
  line-height: 1.6;
  margin-bottom: var(--space-4);
  position: relative;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  position: relative;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--text-3);
  transition: all 0.2s;
}
.tag:hover {
  background: var(--bg-3);
  color: var(--text-1);
}

/* Item Card (for files/scripts) */
.item-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  transition: all 0.3s var(--ease-smooth);
  cursor: pointer;
  position: relative;
}
.item-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-2);
  transform: translateX(4px);
}

.item-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-2);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--accent-light);
  flex-shrink: 0;
}
.item-icon svg { width: 18px; height: 18px; }

.item-info {
  flex: 1;
  min-width: 0;
}
.item-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-0);
  margin-bottom: var(--space-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.item-path {
  font-size: 0.75rem;
  color: var(--text-4);
  font-family: 'Fira Code', monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item-actions {
  display: flex;
  gap: var(--space-2);
  opacity: 0;
  transition: opacity 0.2s;
}
.item-card:hover .item-actions { opacity: 1; }

.action-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--text-3);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
}
.action-btn:hover {
  background: var(--accent-bg);
  border-color: rgba(139,92,246,0.2);
  color: var(--accent-light);
}
.action-btn svg { width: 14px; height: 14px; }

/* ============================================
   Content Modal
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s var(--ease-smooth);
}
.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  width: 100%;
  max-width: 900px;
  max-height: 90vh;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.95) translateY(20px);
  transition: transform 0.4s var(--ease-expo);
}
.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.modal-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}
.modal-title-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--accent-bg);
  border: 1px solid rgba(139,92,246,0.15);
  display: grid;
  place-items: center;
  color: var(--accent-light);
  flex-shrink: 0;
}
.modal-title-icon svg { width: 18px; height: 18px; }

.modal-title-text {
  min-width: 0;
}
.modal-title-text h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-0);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.modal-title-text span {
  font-size: 0.75rem;
  color: var(--text-3);
}

.modal-actions {
  display: flex;
  gap: var(--space-2);
  flex-shrink: 0;
}

.modal-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid var(--border);
  flex-shrink: 0;
}
.modal-btn-primary {
  background: var(--gradient-primary);
  color: white;
  border: none;
}
.modal-btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}
.modal-btn-ghost {
  background: var(--bg-2);
  color: var(--text-2);
}
.modal-btn-ghost:hover {
  background: var(--bg-3);
  color: var(--text-0);
}
.modal-btn svg { width: 14px; height: 14px; }

.modal-content {
  flex: 1;
  overflow: auto;
  padding: 0;
}

/* Code Viewer */
.code-viewer {
  background: var(--bg-0);
}
.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-6);
  border-bottom: 1px solid var(--border);
  background: var(--bg-1);
  position: sticky;
  top: 0;
  z-index: 1;
}
.code-lang {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: 'Fira Code', monospace;
}
.code-actions {
  display: flex;
  gap: var(--space-2);
}
.code-body {
  padding: var(--space-4) 0;
  overflow-x: auto;
}
.code-body pre {
  margin: 0;
  padding: 0 var(--space-6);
  font-family: 'Fira Code', 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--text-1);
}
.code-body code { font-family: inherit; }

/* Markdown Viewer */
.md-viewer {
  padding: var(--space-6) var(--space-8);
  max-width: var(--container-narrow);
  margin: 0 auto;
}
.md-viewer h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-0);
  margin: var(--space-8) 0 var(--space-4);
  line-height: 1.3;
}
.md-viewer h2 {
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--text-0);
  margin: var(--space-6) 0 var(--space-3);
  line-height: 1.3;
}
.md-viewer h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-0);
  margin: var(--space-5) 0 var(--space-2);
}
.md-viewer p {
  font-size: 0.9375rem;
  color: var(--text-2);
  line-height: 1.8;
  margin: var(--space-3) 0;
}
.md-viewer ul, .md-viewer ol {
  padding-left: var(--space-6);
  margin: var(--space-3) 0;
}
.md-viewer li {
  font-size: 0.9375rem;
  color: var(--text-2);
  line-height: 1.8;
  margin: var(--space-2) 0;
}
.md-viewer li::marker { color: var(--accent-light); }
.md-viewer code {
  font-family: 'Fira Code', monospace;
  font-size: 0.8125rem;
  background: var(--bg-2);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--accent-light);
}
.md-viewer pre {
  background: var(--bg-0);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  overflow-x: auto;
  margin: var(--space-4) 0;
}
.md-viewer pre code {
  background: none;
  padding: 0;
  color: var(--text-1);
}
.md-viewer blockquote {
  border-left: 3px solid var(--accent);
  padding-left: var(--space-4);
  margin: var(--space-4) 0;
  color: var(--text-2);
  font-style: italic;
}
.md-viewer a {
  color: var(--accent-light);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.md-viewer a:hover { border-bottom-color: var(--accent-light); }
.md-viewer img {
  max-width: 100%;
  border-radius: var(--radius-md);
  margin: var(--space-4) 0;
}
.md-viewer hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-6) 0;
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.875rem;
  color: var(--text-1);
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  opacity: 0;
  animation: toastIn 0.4s var(--ease-expo) forwards;
  pointer-events: auto;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--error); }
.toast svg { width: 16px; height: 16px; flex-shrink: 0; }
.toast.success svg { color: var(--success); }
.toast.error svg { color: var(--error); }

@keyframes toastIn {
  to { transform: translateY(0); opacity: 1; }
}
@keyframes toastOut {
  to { transform: translateX(100%); opacity: 0; }
}

/* ============================================
   Search Overlay
   ============================================ */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: calc(var(--nav-height) + var(--space-12));
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s var(--ease-smooth);
}
.search-overlay.open {
  opacity: 1;
  visibility: visible;
}

.search-panel {
  width: 100%;
  max-width: 640px;
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: translateY(-20px);
  transition: transform 0.4s var(--ease-expo);
}
.search-overlay.open .search-panel {
  transform: translateY(0);
}

.search-input-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
}
.search-input-wrap svg {
  width: 20px;
  height: 20px;
  color: var(--text-3);
  flex-shrink: 0;
}
.search-input-wrap input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-0);
  font-size: 1rem;
  outline: none;
}
.search-input-wrap input::placeholder { color: var(--text-4); }

.search-results {
  max-height: 400px;
  overflow-y: auto;
  padding: var(--space-2);
}
.search-result {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
}
.search-result:hover {
  background: var(--bg-2);
}
.search-result-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-2);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--text-3);
  flex-shrink: 0;
}
.search-result-icon svg { width: 16px; height: 16px; }
.search-result-info { flex: 1; min-width: 0; }
.search-result-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-0);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.search-result-path {
  font-size: 0.75rem;
  color: var(--text-4);
  font-family: 'Fira Code', monospace;
}
.search-empty {
  text-align: center;
  padding: var(--space-8);
  color: var(--text-3);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.animate-fade-up {
  animation: fadeUp 0.6s var(--ease-expo) forwards;
  opacity: 0;
}

/* Stagger children */
.stagger > *:nth-child(1) { animation-delay: 0ms; }
.stagger > *:nth-child(2) { animation-delay: 50ms; }
.stagger > *:nth-child(3) { animation-delay: 100ms; }
.stagger > *:nth-child(4) { animation-delay: 150ms; }
.stagger > *:nth-child(5) { animation-delay: 200ms; }
.stagger > *:nth-child(6) { animation-delay: 250ms; }
.stagger > *:nth-child(7) { animation-delay: 300ms; }
.stagger > *:nth-child(8) { animation-delay: 350ms; }

/* Lazy load fade */
.lazy {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-expo), transform 0.6s var(--ease-expo);
}
.lazy.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: var(--space-12) var(--space-6);
  text-align: center;
}
.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
}
.footer-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}
.footer-logo svg {
  width: 28px;
  height: 28px;
  color: var(--accent-light);
}
.footer-logo span {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-0);
}
.footer-desc {
  font-size: 0.875rem;
  color: var(--text-3);
  max-width: 500px;
  margin: 0 auto var(--space-6);
}
.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}
.footer-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-3);
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
}
.footer-link:hover { color: var(--text-0); }
.footer-link svg { width: 16px; height: 16px; }
.footer-copy {
  font-size: 0.75rem;
  color: var(--text-4);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1200px) {
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
  .nav-search input { width: 180px; }
  .nav-search input:focus { width: 220px; }
}

@media (max-width: 1024px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .nav-link span { display: none; }
  .nav-link { padding: var(--space-2); }
  .nav-search { display: none; }
}

@media (max-width: 768px) {
  :root { --nav-height: 64px; }
  .nav-links { display: none; }
  .nav-right { gap: var(--space-2); }
  .nav-mobile-toggle { display: grid; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero { padding: calc(var(--nav-height) + var(--space-16)) var(--space-4) var(--space-16); }
  .main-content { padding: 0 var(--space-4); }
  .section-header { flex-direction: column; align-items: flex-start; }
  .modal { max-height: 95vh; border-radius: var(--radius-lg); }
  .modal-header { padding: var(--space-3) var(--space-4); }
  .md-viewer { padding: var(--space-4); }
  .item-actions { opacity: 1; }
}

@media (max-width: 480px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .nav-logo-tag { display: none; }
  .card { padding: var(--space-4); }
}

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

/* ============================================
   Utility Classes
   ============================================ */
.hidden { display: none !important; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}