/* Ovie Programming Language Website - Dark Theme */
/* Enterprise-grade styling with modern design */

:root {
  /* GitHub-style Dark Theme Colors */
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --bg-card: #21262d;
  --bg-code: #161b22;
  
  /* Text Colors */
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --text-muted: #656d76;
  --text-accent: #f59e0b;
  
  /* Urohobo Native Tradition Colors - Crown Gold and White */
  --brand-primary: #f59e0b;
  --brand-secondary: #d97706;
  --brand-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  --brand-accent: #ffffff;
  
  /* Status Colors */
  --success: #238636;
  --warning: #d29922;
  --error: #da3633;
  --info: #1f6feb;
  
  /* Border Colors */
  --border-primary: #30363d;
  --border-secondary: #21262d;
  --border-accent: #f59e0b;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.6);
  
  /* Typography - iOS 26 Style */
  --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', system-ui, sans-serif;
  --font-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  
  /* Spacing - iOS 26 Grid System */
  --spacing-xs: 0.25rem;   /* 4px */
  --spacing-sm: 0.5rem;    /* 8px */
  --spacing-md: 1rem;      /* 16px */
  --spacing-lg: 1.5rem;    /* 24px */
  --spacing-xl: 2rem;      /* 32px */
  --spacing-2xl: 3rem;     /* 48px */
  --spacing-3xl: 4rem;     /* 64px */
  
  /* Border Radius - iOS 26 Continuous Curves */
  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  
  /* Transitions - iOS 26 Fluid Motion */
  --transition-fast: 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-normal: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  
  /* iOS 26 Haptic Feedback Simulation */
  --spring-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --spring-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--brand-secondary);
}

/* Buttons - iOS 26 Style */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-xl);
  font-family: var(--font-family);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  min-height: 48px; /* iOS 26 minimum touch target */
  backdrop-filter: blur(10px);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::before {
  opacity: 1;
}

.btn-primary {
  background: var(--brand-gradient);
  color: white;
  box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 30px rgba(245, 158, 11, 0.4);
  color: white;
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
  transition: all 0.1s var(--spring-bounce);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border: 2px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(20px);
}

.btn-secondary:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  background: rgba(245, 158, 11, 0.1);
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  background: var(--brand-primary);
  color: white;
  transform: translateY(-1px);
}

.btn-large {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.1rem;
  min-height: 56px;
  border-radius: var(--radius-2xl);
}

.btn-icon {
  font-size: 1.2em;
}

/* Navigation - iOS 26 Mobile-First */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(13, 17, 23, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  transition: all var(--transition-normal);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  transition: transform var(--transition-fast);
}

.nav-brand:hover {
  transform: scale(1.05);
}

.nav-logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast);
}

.nav-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-badge {
  background: var(--brand-gradient);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-lg);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-xl);
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--transition-fast);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--brand-gradient);
  transition: all var(--transition-fast);
  transform: translateX(-50%);
}

.nav-link:hover {
  color: var(--brand-primary);
  background: rgba(245, 158, 11, 0.1);
}

.nav-link:hover::after {
  width: 80%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-menu-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  background: rgba(13, 17, 23, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-lg);
  transform: translateY(-100%);
  transition: transform var(--transition-normal);
  z-index: 999;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
}

.mobile-menu.active {
  transform: translateY(0);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.mobile-nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  text-decoration: none;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-align: center;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-nav-link:hover,
.mobile-nav-link:focus {
  color: var(--brand-primary);
  background: rgba(245, 158, 11, 0.1);
}

.mobile-nav-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.mobile-nav-actions .btn {
  width: 100%;
  justify-content: center;
}

/* Prevent body scroll when mobile menu is open */
body.menu-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
}

/* Hero Section */
.hero {
  padding: 120px 0 var(--spacing-3xl);
  background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.3);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-xl);
  color: var(--brand-primary);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.badge-icon {
  font-size: 1.2em;
}

.hero-title {
  font-size: 4rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
}

.gradient-text {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--brand-primary);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-code {
  position: relative;
}

.code-window {
  background: var(--bg-code);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
}

.code-dots {
  display: flex;
  gap: var(--spacing-sm);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27ca3f; }

.code-title {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.code-content {
  padding: var(--spacing-lg);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  overflow-x: auto;
}

.code-content pre {
  margin: 0;
}

.code-content code {
  color: var(--text-primary);
}

/* Achievement Banner */
.achievement-banner {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-primary);
  border-bottom: 1px solid var(--border-primary);
  padding: var(--spacing-lg) 0;
}

.achievement-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.achievement-icon {
  font-size: 2rem;
}

.achievement-text h3 {
  color: var(--brand-primary);
  margin-bottom: var(--spacing-xs);
}

.achievement-text p {
  margin: 0;
  color: var(--text-secondary);
}

/* Sections */
section {
  padding: var(--spacing-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Features Section */
.features {
  background: var(--bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.feature-card {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-primary);
  transition: var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-primary);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.feature-title {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.feature-description {
  color: var(--text-secondary);
  margin: 0;
}

/* Download Section */
.download-options {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.download-options:last-of-type {
  grid-template-columns: 1fr 1fr;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
}

.download-card.primary {
  border-color: var(--brand-primary);
  background: rgba(245, 158, 11, 0.05);
}

.download-header h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.download-header p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.download-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.download-links .btn {
  justify-content: flex-start;
  text-align: left;
}

.code-block {
  background: var(--bg-code);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.code-tabs {
  display: flex;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
}

.tab-btn {
  background: transparent;
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
  font-family: var(--font-family);
}

.tab-btn.active,
.tab-btn:hover {
  color: var(--brand-primary);
  background: rgba(0, 212, 255, 0.1);
}

.tab-content {
  display: none;
  padding: var(--spacing-md);
}

.tab-content.active {
  display: block;
}

.tab-content pre {
  margin: 0;
  font-family: var(--font-mono);
  color: var(--text-primary);
  font-size: 0.9rem;
}

.download-verify {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
}

.download-verify h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

/* Documentation Section */
.documentation {
  background: var(--bg-secondary);
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.doc-category {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
}

.doc-category-title {
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  font-size: 1.25rem;
}

.doc-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.doc-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  text-decoration: none;
}

.doc-link:hover {
  border-color: var(--brand-primary);
  transform: translateX(4px);
}

.doc-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.doc-info h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  font-size: 1rem;
}

.doc-info p {
  color: var(--text-secondary);
  margin: 0;
  font-size: 0.9rem;
}

/* Examples Section */
.examples-tabs {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.example-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: var(--transition-normal);
}

.example-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-primary);
}

.example-card h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.code-preview {
  background: var(--bg-code);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.code-preview pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  overflow-x: auto;
}

.example-link {
  color: var(--brand-primary);
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition-fast);
}

.example-link:hover {
  color: var(--brand-secondary);
}

/* Library Section */
.library {
  background: var(--bg-secondary);
}

.library-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.library-module {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: var(--transition-normal);
}

.library-module:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-primary);
}

.module-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.module-header h3 {
  color: var(--text-primary);
  font-family: var(--font-mono);
  margin: 0;
}

.module-size {
  background: var(--brand-gradient);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
}

.module-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.module-functions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.function-tag {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  border: 1px solid var(--border-primary);
}

.module-link {
  color: var(--brand-primary);
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition-fast);
}

.module-link:hover {
  color: var(--brand-secondary);
}

/* Test Project Section */
.test-project {
  background: var(--bg-secondary);
}

.playground {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.playground-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-primary);
}

.playground-tabs {
  display: flex;
  gap: var(--spacing-sm);
}

.playground-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.playground-content {
  height: 400px;
}

.code-editor {
  width: 100%;
  height: 100%;
  background: var(--bg-code);
  color: var(--text-primary);
  border: none;
  padding: var(--spacing-md);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  resize: none;
  outline: none;
}

.output-console {
  height: 100%;
  background: var(--bg-code);
  padding: var(--spacing-md);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  overflow-y: auto;
}

.console-line {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.example-list {
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.example-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  color: var(--text-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  font-family: var(--font-family);
}

.example-btn:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

/* Community Section */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.community-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  transition: var(--transition-normal);
}

.community-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-primary);
}

.community-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.community-card h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.community-card p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.community-link {
  color: var(--brand-primary);
  font-weight: 500;
  text-decoration: none;
  transition: var(--transition-fast);
}

.community-link:hover {
  color: var(--brand-secondary);
}

/* Achievement Section */
.achievement {
  background: var(--bg-secondary);
  text-align: center;
}

.achievement-content {
  max-width: 800px;
  margin: 0 auto;
}

.achievement-header {
  margin-bottom: var(--spacing-xl);
}

.achievement-logo {
  width: 80px;
  height: 80px;
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-lg);
}

.achievement-header h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.achievement-date {
  color: var(--brand-primary);
  font-weight: 600;
  font-size: 1.1rem;
}

.achievement-body h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.achievement-body p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  font-size: 1.1rem;
}

.achievement-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-primary);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
  align-items: start;
}

.footer-brand {
  grid-column: span 1;
}

.footer-logo {
  width: 48px;
  height: 48px;
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-md);
}

.footer-brand h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.25rem;
}

.footer-brand p {
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
}

.footer-section {
  display: flex;
  flex-direction: column;
}

.footer-section h4 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
  font-weight: 600;
}

.footer-section a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: var(--spacing-sm);
  transition: var(--transition-fast);
  padding: var(--spacing-xs) 0;
  border-radius: var(--radius-xs);
}

.footer-section a:hover {
  color: var(--brand-primary);
  background: rgba(245, 158, 11, 0.1);
  padding-left: var(--spacing-sm);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-primary);
  color: var(--text-muted);
}

.footer-bottom p {
  margin-bottom: var(--spacing-sm);
}

/* Responsive Design - Mobile-First iOS 26 */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-2xl);
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .nav-menu {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .mobile-menu {
    display: block;
  }
  
  .download-options {
    grid-template-columns: 1fr;
  }
  
  .download-options:last-of-type {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
  }
  
  .footer-brand {
    grid-column: span 2;
    margin-bottom: var(--spacing-lg);
  }
  
  /* iOS 26 Card Layouts for Tablet */
  .features-grid,
  .docs-grid,
  .examples-grid,
  .library-grid,
  .community-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 100px 0 var(--spacing-2xl);
    min-height: auto;
  }
  
  .hero-title {
    font-size: 2.5rem;
    line-height: 1.1;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
  
  .hero-actions {
    justify-content: center;
    flex-direction: column;
    width: 100%;
  }
  
  .btn-large {
    width: 100%;
    max-width: 300px;
  }
  
  .achievement-stats {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .footer-brand {
    grid-column: span 1;
    margin-bottom: var(--spacing-lg);
    text-align: center;
  }
  
  .footer-section {
    text-align: center;
  }
  
  .footer-section h4 {
    margin-bottom: var(--spacing-sm);
  }
  
  /* Single column layouts for mobile */
  .features-grid,
  .docs-grid,
  .examples-grid,
  .library-grid,
  .community-grid {
    grid-template-columns: 1fr;
  }
  
  /* iOS 26 Mobile Navigation */
  .nav-container {
    padding: 0 var(--spacing-md);
  }
  
  .nav-logo {
    width: 36px;
    height: 36px;
  }
  
  .nav-title {
    font-size: 1.3rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero {
    padding: 80px 0 var(--spacing-xl);
  }
  
  .hero-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
  }
  
  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .section-subtitle {
    font-size: 1rem;
  }
  
  .hero-actions {
    gap: var(--spacing-sm);
  }
  
  .btn-large {
    width: 100%;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
  }
  
  /* iOS 26 Mobile Typography */
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  h4 { font-size: 1.25rem; }
  
  /* Mobile-optimized cards */
  .feature-card,
  .doc-category,
  .example-card,
  .library-module,
  .community-card {
    padding: var(--spacing-lg);
  }
  
  /* Mobile code blocks */
  .code-window,
  .code-block,
  .playground {
    border-radius: var(--radius-lg);
  }
  
  .code-content,
  .tab-content {
    padding: var(--spacing-md);
    font-size: 0.85rem;
  }
  
  /* Mobile navigation improvements */
  .navbar {
    padding: var(--spacing-xs) 0;
  }
  
  .nav-container {
    min-height: 56px;
    padding: 0 var(--spacing-md);
  }
  
  .mobile-menu {
    top: 56px;
  }
  
  .nav-logo {
    width: 32px;
    height: 32px;
  }
  
  .nav-title {
    font-size: 1.2rem;
  }
  
  .nav-badge {
    font-size: 0.7rem;
    padding: 2px 6px;
  }
  
  /* Enhanced mobile buttons */
  .mobile-menu-toggle {
    font-size: 1.3rem;
    padding: var(--spacing-xs);
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  /* Mobile-first download section */
  .download-links .btn {
    font-size: 0.9rem;
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

/* iOS 26 Touch Improvements */
@media (hover: none) and (pointer: coarse) {
  .btn {
    min-height: 48px;
    padding: var(--spacing-md) var(--spacing-lg);
  }
  
  .nav-link,
  .mobile-nav-link {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .feature-card:hover,
  .doc-link:hover,
  .example-card:hover,
  .library-module:hover,
  .community-card:hover {
    transform: none;
  }
  
  .btn:hover {
    transform: none;
  }
  
  /* Touch-friendly interactions */
  .btn:active {
    transform: scale(0.95);
    transition: transform 0.1s ease;
  }
  
  .mobile-nav-link:active {
    background: rgba(245, 158, 11, 0.2);
    transform: scale(0.98);
  }
  
  /* Enhanced touch targets */
  .tab-btn {
    min-height: 44px;
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .example-btn {
    min-height: 44px;
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .nav-logo,
  .footer-logo,
  .achievement-logo {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* Syntax Highlighting */
.language-ovie .comment { color: #6a737d; }
.language-ovie .keyword { color: #f97583; }
.language-ovie .string { color: #9ecbff; }
.language-ovie .number { color: #79b8ff; }
.language-ovie .function { color: #b392f0; }
.language-ovie .variable { color: #ffab70; }

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translate3d(0, 0, 0);
  }
  40%, 43% {
    transform: translate3d(0, -8px, 0);
  }
  70% {
    transform: translate3d(0, -4px, 0);
  }
  90% {
    transform: translate3d(0, -2px, 0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.pulse {
  animation: pulse 2s infinite;
}

.slide-in-right {
  animation: slideInRight 0.5s ease-out;
}

.bounce {
  animation: bounce 1s ease-in-out;
}

/* Modern loading states */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(245, 158, 11, 0.2), transparent);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--border-secondary);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--brand-primary);
}


/* ============================================================
   Shared page styles for inner pages
   ============================================================ */
.page-hero {
  padding: 120px 0 var(--spacing-3xl);
  background: radial-gradient(ellipse at top, rgba(245,158,11,0.08) 0%, transparent 60%);
  text-align: center;
}
.page-hero h1 { font-size: 3rem; color: var(--text-primary); margin-bottom: var(--spacing-md); }
.page-hero p { font-size: 1.2rem; color: var(--text-secondary); max-width: 600px; margin: 0 auto; }

.page-content { max-width: 900px; margin: 0 auto; padding: var(--spacing-3xl) var(--spacing-lg); }
.page-content h2 { color: var(--text-primary); font-size: 1.75rem; margin-top: var(--spacing-2xl); margin-bottom: var(--spacing-md); padding-bottom: var(--spacing-sm); border-bottom: 1px solid var(--border-primary); }
.page-content h3 { color: var(--text-primary); font-size: 1.25rem; margin-top: var(--spacing-xl); margin-bottom: var(--spacing-md); }
.page-content p { color: var(--text-secondary); line-height: 1.8; }
.page-content ul, .page-content ol { color: var(--text-secondary); padding-left: var(--spacing-xl); line-height: 1.8; margin-bottom: var(--spacing-md); }
.page-content li { margin-bottom: var(--spacing-sm); }
.page-content strong { color: var(--text-primary); }
.page-content code { font-family: var(--font-mono); color: var(--brand-primary); background: rgba(245,158,11,0.1); padding: 2px 6px; border-radius: 4px; font-size: 0.9em; }
.page-content .code-window { margin: var(--spacing-xl) 0; }
.page-content a { color: var(--brand-primary); }
.page-content a:hover { color: var(--brand-secondary); }

.breadcrumb { display: flex; align-items: center; gap: var(--spacing-sm); color: var(--text-muted); font-size: 0.9rem; margin-bottom: var(--spacing-xl); }
.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--brand-primary); }
.breadcrumb span { color: var(--text-muted); }

.alert { padding: var(--spacing-md) var(--spacing-lg); border-radius: var(--radius-md); margin: var(--spacing-lg) 0; border-left: 4px solid; }
.alert-info { background: rgba(31,111,235,0.1); border-color: var(--info); color: var(--text-secondary); }
.alert-success { background: rgba(35,134,54,0.1); border-color: var(--success); color: var(--text-secondary); }
.alert-warning { background: rgba(210,153,34,0.1); border-color: var(--warning); color: var(--text-secondary); }

/* Book section on home page */
.book-section { background: var(--bg-secondary); padding: var(--spacing-3xl) 0; }
.book-showcase { display: grid; grid-template-columns: auto 1fr; gap: var(--spacing-3xl); align-items: start; }
.book-3d { width: 200px; height: 280px; position: relative; transform-style: preserve-3d; transform: perspective(1000px) rotateY(-20deg); transition: transform var(--transition-normal); cursor: pointer; flex-shrink: 0; }
.book-3d:hover { transform: perspective(1000px) rotateY(-5deg); }
.book-front { width: 200px; height: 280px; background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%); border-radius: 4px 12px 12px 4px; display: flex; align-items: center; justify-content: center; box-shadow: 8px 8px 30px rgba(0,0,0,0.5); border: 1px solid rgba(245,158,11,0.3); position: relative; overflow: hidden; }
.book-front::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(245,158,11,0.1) 0%, transparent 60%); }
.book-cover-content { text-align: center; padding: var(--spacing-lg); position: relative; z-index: 1; }
.book-cover-content .book-logo { font-size: 3rem; margin-bottom: var(--spacing-md); }
.book-cover-content h2 { color: white; font-size: 1rem; margin-bottom: var(--spacing-sm); line-height: 1.3; }
.book-cover-content p { color: rgba(255,255,255,0.7); font-size: 0.8rem; margin: 0; }
.book-version { display: inline-block; background: var(--brand-gradient); color: white; padding: 2px 8px; border-radius: 12px; font-size: 0.75rem; font-weight: 600; margin-top: var(--spacing-sm); }
.book-spine { position: absolute; left: -20px; top: 0; width: 20px; height: 280px; background: linear-gradient(to right, #0a0a1a, #1a1a2e); border-radius: 4px 0 0 4px; box-shadow: -4px 0 10px rgba(0,0,0,0.4); }
.book-info { flex: 1; }
.book-meta { display: flex; gap: var(--spacing-sm); flex-wrap: wrap; margin-bottom: var(--spacing-lg); }
.book-tag { background: rgba(245,158,11,0.15); border: 1px solid rgba(245,158,11,0.3); color: var(--brand-primary); padding: var(--spacing-xs) var(--spacing-md); border-radius: var(--radius-xl); font-size: 0.85rem; font-weight: 500; }
.book-description { color: var(--text-secondary); font-size: 1.05rem; line-height: 1.7; margin-bottom: var(--spacing-xl); }
.book-chapters { margin-bottom: var(--spacing-xl); }
.chapter-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-sm); }
.chapter-item { display: flex; align-items: center; gap: var(--spacing-sm); padding: var(--spacing-sm) var(--spacing-md); background: var(--bg-card); border: 1px solid var(--border-primary); border-radius: var(--radius-sm); font-size: 0.9rem; color: var(--text-secondary); transition: var(--transition-fast); }
.chapter-item:hover { border-color: var(--brand-primary); color: var(--text-primary); }
.ch-num { background: var(--brand-gradient); color: white; width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 700; flex-shrink: 0; }
.book-actions { display: flex; gap: var(--spacing-md); flex-wrap: wrap; }

/* Module system section */
.modules-section { background: var(--bg-primary); padding: var(--spacing-3xl) 0; }
.modules-showcase { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-3xl); align-items: start; }
.module-demo-tabs { display: flex; gap: var(--spacing-sm); margin-bottom: var(--spacing-lg); flex-wrap: wrap; }
.mdtab { background: var(--bg-tertiary); border: 1px solid var(--border-primary); color: var(--text-secondary); padding: var(--spacing-sm) var(--spacing-md); border-radius: var(--radius-md); cursor: pointer; font-family: var(--font-family); font-size: 0.9rem; transition: all var(--transition-fast); }
.mdtab.active, .mdtab:hover { background: rgba(245,158,11,0.15); border-color: var(--brand-primary); color: var(--brand-primary); }
.mdcontent { display: none; }
.mdcontent.active { display: block; }
.module-features { display: flex; flex-direction: column; gap: var(--spacing-lg); }
.mf-item { display: flex; gap: var(--spacing-md); align-items: flex-start; padding: var(--spacing-md); background: var(--bg-card); border: 1px solid var(--border-primary); border-radius: var(--radius-md); transition: var(--transition-fast); }
.mf-item:hover { border-color: var(--brand-primary); transform: translateX(4px); }
.mf-icon { font-size: 1.5rem; flex-shrink: 0; }
.mf-item h4 { color: var(--text-primary); margin-bottom: 0.25rem; font-size: 1rem; }
.mf-item p { color: var(--text-secondary); margin: 0; font-size: 0.9rem; }
.mf-item code { font-family: var(--font-mono); font-size: 0.85rem; color: var(--brand-primary); background: rgba(245,158,11,0.1); padding: 2px 5px; border-radius: 3px; }

/* Download grid */
.download-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); margin-bottom: var(--spacing-2xl); }
.download-card { background: var(--bg-card); border: 1px solid var(--border-primary); border-radius: var(--radius-lg); padding: var(--spacing-lg); text-align: center; transition: var(--transition-normal); min-width: 0; overflow: hidden; }
.download-card.primary { border-color: var(--brand-primary); background: rgba(245,158,11,0.05); }
.download-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.platform-icon { font-size: 2.5rem; margin-bottom: var(--spacing-sm); }
.download-card h3 { color: var(--text-primary); margin-bottom: var(--spacing-xs); font-size: 1.1rem; }
.download-card > p { color: var(--text-secondary); margin-bottom: var(--spacing-md); font-size: 0.85rem; }
.download-btns { display: flex; flex-direction: column; gap: var(--spacing-xs); margin-bottom: var(--spacing-sm); }
.download-btns .btn { font-size: 0.82rem; padding: var(--spacing-sm) var(--spacing-md); min-height: 38px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; justify-content: center; }
.install-cmd { background: var(--bg-code); border: 1px solid var(--border-primary); border-radius: var(--radius-sm); padding: var(--spacing-sm); font-size: 0.7rem; overflow-x: auto; text-align: left; cursor: pointer; margin-top: var(--spacing-sm); }
.install-cmd code { color: var(--text-secondary); font-family: var(--font-mono); white-space: nowrap; }
.download-source { background: var(--bg-card); border: 1px solid var(--border-primary); border-radius: var(--radius-lg); padding: var(--spacing-xl); margin-bottom: var(--spacing-xl); }
.download-source h3 { color: var(--text-primary); margin-bottom: var(--spacing-md); }
.download-verify { background: var(--bg-card); border: 1px solid var(--border-primary); border-radius: var(--radius-lg); padding: var(--spacing-xl); }
.download-verify h4 { color: var(--text-primary); margin-bottom: var(--spacing-lg); }
.verify-steps { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-md); }
.verify-step { display: flex; align-items: center; gap: var(--spacing-md); padding: var(--spacing-md); background: var(--bg-tertiary); border-radius: var(--radius-md); border: 1px solid var(--border-primary); }
.step-num { background: var(--brand-gradient); color: white; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.8rem; font-weight: 700; flex-shrink: 0; }
.verify-step code { font-family: var(--font-mono); font-size: 0.85rem; color: var(--brand-primary); flex: 1; }
.verify-step span { color: var(--text-muted); font-size: 0.8rem; }
.contribute-cta { text-align: center; margin-top: var(--spacing-3xl); padding: var(--spacing-2xl); background: var(--bg-card); border: 1px solid var(--border-primary); border-radius: var(--radius-lg); }
.contribute-cta h3 { color: var(--text-primary); margin-bottom: var(--spacing-md); }
.contribute-cta p { color: var(--text-secondary); margin-bottom: var(--spacing-xl); max-width: 600px; margin-left: auto; margin-right: auto; }

/* Responsive additions */
@media (max-width: 1024px) {
  .modules-showcase { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .book-showcase { grid-template-columns: 1fr; }
  .book-3d { margin: 0 auto; }
  .verify-steps { grid-template-columns: 1fr; }
}
@media (max-width: 1200px) {
  .download-grid { grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); }
  .download-btns .btn { font-size: 0.78rem; padding: var(--spacing-xs) var(--spacing-sm); }
}
@media (max-width: 768px) {
  .chapter-list { grid-template-columns: 1fr; }
  .book-actions { flex-direction: column; }
  .book-actions .btn { width: 100%; justify-content: center; }
  .page-hero h1 { font-size: 2rem; }
  .download-grid { grid-template-columns: 1fr; }
}