/* ===========================================================================
   NARRATIVE ARCHITECT - DESIGN SYSTEM
   =========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Colors */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #111118;
  --color-bg-tertiary: #1a1a24;
  --color-bg-card: rgba(20, 20, 30, 0.7);
  
  --color-text-primary: #f0f0f5;
  --color-text-secondary: #a0a0b0;
  --color-text-muted: #606070;
  
  --color-accent: #c8ff00;
  --color-accent-dim: #a0cc00;
  --color-accent-glow: rgba(200, 255, 0, 0.3);
  
  --color-red-glow: rgba(180, 40, 40, 0.15);
  --color-blue-glow: rgba(60, 100, 180, 0.1);
  
  /* Gradients */
  --gradient-hero: linear-gradient(135deg, var(--color-bg-primary) 0%, #151520 50%, #0d0d15 100%);
  --gradient-card: linear-gradient(145deg, rgba(30, 30, 45, 0.6) 0%, rgba(15, 15, 25, 0.8) 100%);
  --gradient-accent: linear-gradient(90deg, var(--color-accent) 0%, #e0ff50 100%);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Outfit', var(--font-primary);
  
  --size-xs: 0.75rem;
  --size-sm: 0.875rem;
  --size-base: 1rem;
  --size-lg: 1.125rem;
  --size-xl: 1.25rem;
  --size-2xl: 1.5rem;
  --size-3xl: 2rem;
  --size-4xl: 2.5rem;
  --size-5xl: 3.5rem;
  --size-6xl: 4.5rem;
  
  /* 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;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px var(--color-accent-glow);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: var(--size-5xl); }
h2 { font-size: var(--size-4xl); }
h3 { font-size: var(--size-3xl); }
h4 { font-size: var(--size-2xl); }
h5 { font-size: var(--size-xl); }
h6 { font-size: var(--size-lg); }

@media (max-width: 768px) {
  h1 { font-size: var(--size-4xl); }
  h2 { font-size: var(--size-3xl); }
  h3 { font-size: var(--size-2xl); }
}

.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-24) 0;
  position: relative;
}

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.text-center { text-align: center; }

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) 0;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: var(--size-lg);
}

.nav-logo img {
  height: 40px;
  width: auto;
}

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

.nav-link {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  font-size: var(--size-sm);
  transition: all var(--transition-base);
}

.nav-link:hover {
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text-primary);
}

.nav-cta {
  display: flex;
  gap: var(--space-3);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: var(--transition-base);
}

@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-bg-secondary);
    padding: var(--space-6);
    gap: var(--space-2);
    transform: translateY(-120%);
    opacity: 0;
    transition: var(--transition-base);
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-cta {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--size-sm);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg-primary);
}

.btn-primary:hover {
  background: var(--color-accent-dim);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--size-base);
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn-outline:hover {
  background: var(--color-accent);
  color: var(--color-bg-primary);
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
  background: var(--gradient-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(200, 255, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  color: var(--color-accent);
  font-size: var(--size-2xl);
}

.card-title {
  font-size: var(--size-xl);
  margin-bottom: var(--space-2);
}

.card-text {
  color: var(--color-text-secondary);
  font-size: var(--size-sm);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(10, 10, 15, 0.95) 0%,
    rgba(10, 10, 15, 0.7) 40%,
    rgba(10, 10, 15, 0.4) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(200, 255, 0, 0.1);
  border: 1px solid rgba(200, 255, 0, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--size-sm);
  color: var(--color-accent);
  margin-bottom: var(--space-6);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.hero-title span {
  color: var(--color-accent);
}

.hero-text {
  font-size: var(--size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-stats {
  position: absolute;
  right: 10%;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: var(--size-4xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

.stat-label {
  font-size: var(--size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

@media (max-width: 1024px) {
  .hero-stats {
    position: relative;
    right: auto;
    top: auto;
    transform: none;
    flex-direction: row;
    justify-content: flex-start;
    margin-top: var(--space-10);
    gap: var(--space-10);
  }
  
  .stat-item {
    text-align: left;
  }
}

/* Floating code/matrix effect */
.floating-code {
  position: absolute;
  right: 5%;
  top: 20%;
  width: 40%;
  height: 60%;
  overflow: hidden;
  opacity: 0.15;
  font-family: 'Courier New', monospace;
  font-size: var(--size-xs);
  color: var(--color-accent);
  pointer-events: none;
  z-index: 0;
}

.floating-code span {
  position: absolute;
  animation: float-up 10s linear infinite;
  opacity: 0;
}

@keyframes float-up {
  0% {
    opacity: 0;
    transform: translateY(100%);
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateY(-100%);
  }
}

/* --------------------------------------------------------------------------
   Stats Section
   -------------------------------------------------------------------------- */
.stats-section {
  background: var(--color-bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  text-align: center;
}

.stats-grid .stat-value {
  font-size: var(--size-5xl);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --------------------------------------------------------------------------
   Features Section
   -------------------------------------------------------------------------- */
.features-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-16);
}

.features-header h2 {
  margin-bottom: var(--space-4);
}

.features-header p {
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   Blog / Posts Grid
   -------------------------------------------------------------------------- */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 1024px) {
  .posts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .posts-grid {
    grid-template-columns: 1fr;
  }
}

.post-card {
  background: var(--gradient-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.post-card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
}

.post-image {
  aspect-ratio: 16/9;
  background: var(--color-bg-tertiary);
  overflow: hidden;
}

.post-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.post-card:hover .post-image img {
  transform: scale(1.05);
}

.post-content {
  padding: var(--space-5);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--size-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.post-category {
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.post-title {
  font-size: var(--size-lg);
  margin-bottom: var(--space-2);
  line-height: 1.4;
}

.post-excerpt {
  font-size: var(--size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Video / Tutorial Cards
   -------------------------------------------------------------------------- */
.video-card {
  background: var(--gradient-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.video-card:hover {
  border-color: var(--color-accent);
}

.video-thumbnail {
  position: relative;
  aspect-ratio: 16/9;
  background: var(--color-bg-tertiary);
  overflow: hidden;
}

.video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  background: rgba(200, 255, 0, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.video-play-btn::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 20px solid var(--color-bg-primary);
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  margin-left: 4px;
}

.video-card:hover .video-play-btn {
  transform: translate(-50%, -50%) scale(1.1);
}

.video-info {
  padding: var(--space-5);
}

.video-duration {
  position: absolute;
  bottom: var(--space-3);
  right: var(--space-3);
  background: rgba(0, 0, 0, 0.8);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--size-xs);
  font-weight: 600;
}

.video-title {
  font-size: var(--size-lg);
  margin-bottom: var(--space-2);
}

.video-description {
  font-size: var(--size-sm);
  color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   Download / Purchase Section
   -------------------------------------------------------------------------- */
.download-hero {
  text-align: center;
  padding: var(--space-24) 0;
}

.price-card {
  max-width: 480px;
  margin: 0 auto;
  background: var(--gradient-card);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  text-align: center;
  box-shadow: var(--shadow-glow);
}

.price-value {
  font-size: var(--size-6xl);
  font-weight: 700;
  color: var(--color-accent);
  margin: var(--space-4) 0;
}

.price-value span {
  font-size: var(--size-xl);
  color: var(--color-text-secondary);
}

.price-features {
  list-style: none;
  margin: var(--space-8) 0;
  text-align: left;
}

.price-features li {
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.price-features li::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: bold;
}

/* PayPal button container */
.paypal-container {
  margin-top: var(--space-6);
  min-height: 50px;
}

/* System Requirements */
.requirements {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-top: var(--space-8);
}

.requirements h4 {
  margin-bottom: var(--space-4);
  color: var(--color-accent);
}

.requirements ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.requirements li {
  font-size: var(--size-sm);
  color: var(--color-text-secondary);
}

@media (max-width: 640px) {
  .requirements ul {
    grid-template-columns: 1fr;
  }
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-10);
  margin-bottom: var(--space-10);
}

@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-brand {
  max-width: 280px;
}

.footer-brand img {
  height: 40px;
  margin-bottom: var(--space-4);
}

.footer-brand p {
  font-size: var(--size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.footer-title {
  font-size: var(--size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-2);
}

.footer-links a {
  font-size: var(--size-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-bottom p {
  font-size: var(--size-sm);
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Page Header (for inner pages)
   -------------------------------------------------------------------------- */
.page-header {
  padding: calc(80px + var(--space-16)) 0 var(--space-16);
  background: linear-gradient(to bottom, var(--color-bg-secondary), var(--color-bg-primary));
  text-align: center;
}

.page-header h1 {
  margin-bottom: var(--space-4);
}

.page-header p {
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Article / Blog Post Page
   -------------------------------------------------------------------------- */
.article {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-16) var(--space-6);
}

.article-header {
  margin-bottom: var(--space-10);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  color: var(--color-text-muted);
  font-size: var(--size-sm);
  margin-top: var(--space-4);
}

.article-content {
  font-size: var(--size-lg);
  line-height: 1.8;
}

.article-content p {
  margin-bottom: var(--space-6);
}

.article-content h2 {
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
}

.article-content ul, .article-content ol {
  margin-left: var(--space-6);
  margin-bottom: var(--space-6);
}

.article-content li {
  margin-bottom: var(--space-2);
}

.article-content blockquote {
  border-left: 4px solid var(--color-accent);
  padding-left: var(--space-6);
  margin: var(--space-8) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

.article-content code {
  background: var(--color-bg-tertiary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
}

.article-content pre {
  background: var(--color-bg-tertiary);
  padding: var(--space-5);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--space-6) 0;
}

.article-content pre code {
  background: none;
  padding: 0;
}

/* --------------------------------------------------------------------------
   CTA Section
   -------------------------------------------------------------------------- */
.cta-section {
  text-align: center;
  background: linear-gradient(to bottom, transparent, var(--color-bg-secondary));
  padding: var(--space-24) 0;
}

.cta-content {
  max-width: 600px;
  margin: 0 auto;
}

.cta-content h2 {
  margin-bottom: var(--space-4);
}

.cta-content p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

.animate-fade-in {
  animation: fadeIn 0.6s ease forwards;
}

.animate-fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }

/* Scroll reveal utility */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-10 { margin-top: var(--space-10); }
.mt-16 { margin-top: var(--space-16); }

.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.pt-8 { padding-top: var(--space-8); }
.pb-8 { padding-bottom: var(--space-8); }

.hidden { display: none !important; }

/* Glassmorphism */
.glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}