/* ==========================================================================
   Bib - Personal Blog Tool
   Main CSS Entry Point
   ========================================================================== */

/* Base Styles */
/* ==========================================================================
   CSS Custom Properties - Design System Variables
   ========================================================================== */

/* Cyberpunk Theme Variables */
:root {
  /* Color System */
  --color-primary: #00ffff;
  --color-secondary: #ff00ff;
  --color-accent: #00ff00;
  --color-warning: #ff8800;
  
  /* Color RGB values for alpha calculations */
  --color-primary-rgb: 0, 255, 255;
  --color-secondary-rgb: 255, 0, 255;
  --color-accent-rgb: 0, 255, 0;
  
  /* Background System */
  --bg-base: #0a0a0a;
  --bg-surface: #1a1a1a;
  --bg-elevated: #2a2a2a;
  
  /* Text System */
  --text-primary: #e0e0e0;
  --text-secondary: #b0b0b0;
  --text-muted: #808080;
  
  /* Legacy variables for backward compatibility */
  --bg-primary: var(--bg-base);
  --bg-secondary: var(--bg-surface);
  --bg-tertiary: var(--bg-elevated);
  --accent-cyan: var(--color-primary);
  --accent-magenta: var(--color-secondary);
  --accent-green: var(--color-accent);
  --accent-orange: var(--color-warning);
  --border-glow: var(--color-primary);
  
  /* Effect System */
  --shadow-sm: 0 0 5px rgba(var(--color-primary-rgb), 0.2);
  --shadow-md: 0 0 10px rgba(var(--color-primary-rgb), 0.3);
  --shadow-lg: 0 0 20px rgba(var(--color-primary-rgb), 0.5);
  
  /* Legacy shadow variables */
  --shadow-glow: var(--shadow-md);
  --shadow-glow-strong: var(--shadow-lg);
  
  /* Gradient System */
  --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  --gradient-cyber: var(--gradient-primary);
  
  /* Spacing System */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  
  /* Border Radius System */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Typography System */
  --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  
  /* Font Size System */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  
  /* Line Height System */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
  
  /* Transition System */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-Index System */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Theme Customization Support */
:root[data-theme="cyberpunk"] {
  /* Already defined above as default */
}

/* Future theme support */
:root[data-theme="minimal"] {
  --color-primary: #3b82f6;
  --color-secondary: #8b5cf6;
  --color-accent: #10b981;
  --bg-base: #ffffff;
  --bg-surface: #f8fafc;
  --bg-elevated: #f1f5f9;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
}

:root[data-theme="classic"] {
  --color-primary: #2563eb;
  --color-secondary: #7c3aed;
  --color-accent: #059669;
  --bg-base: #f9fafb;
  --bg-surface: #ffffff;
  --bg-elevated: #f3f4f6;
  --text-primary: #111827;
  --text-secondary: #374151;
  --text-muted: #6b7280;
}

/* ==========================================================================
   CSS Reset and Base Styles
   ========================================================================== */

/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  /* Prevent page bouncing/rubber band effect */
  overscroll-behavior: none;
  height: 100%;
}

body {
  font-family: var(--font-sans);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background: var(--bg-base);
  background-image:
    radial-gradient(circle at 20% 80%, rgba(var(--color-primary-rgb), 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(var(--color-secondary-rgb), 0.1) 0%, transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
  height: 100%;
  padding: var(--space-md);
  overflow-x: hidden;
  /* Prevent page bouncing/rubber band effect */
  overscroll-behavior: none;
  /* Fix scrolling on iOS */
  -webkit-overflow-scrolling: touch;
}

/* Background system - video with CSS gradient fallback */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -3;
  /* Cyberpunk gradient fallback */
  background: linear-gradient(135deg,
    var(--bg-base) 0%,
    #1a0a1a 25%,
    #0a1a1a 50%,
    #1a1a0a 75%,
    var(--bg-base) 100%);
  /* Animated gradient for cyberpunk feel */
  background-size: 400% 400%;
  animation: gradientShift 20s ease infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Video background for all pages */
.video-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
  opacity: 0.3; /* Make video subtle so text remains readable */
}

/* Overlay for all pages to ensure text readability */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(var(--bg-base), 0.4); /* Dark overlay */
  z-index: -1;
  pointer-events: none;
}

/* ==========================================================================
   Typography System
   ========================================================================== */

/* Headings */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 600;
  line-height: var(--leading-tight);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: var(--text-4xl);
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 20px rgba(var(--color-primary-rgb), 0.3);
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: var(--text-3xl);
  color: var(--color-primary);
  text-shadow: 0 0 10px rgba(var(--color-primary-rgb), 0.3);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-lg);
}

h3 {
  font-size: var(--text-2xl);
  color: var(--color-secondary);
  margin-top: var(--space-lg);
}

h4 {
  font-size: var(--text-xl);
  color: var(--color-accent);
}

h5 {
  font-size: var(--text-lg);
  color: var(--text-primary);
}

h6 {
  font-size: var(--text-base);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Paragraphs */
p {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: var(--transition-normal);
}

a:hover {
  color: var(--color-secondary);
  border-bottom-color: var(--color-secondary);
  text-shadow: 0 0 5px rgba(var(--color-secondary-rgb), 0.5);
}

/* Lists */
ul, ol {
  margin: var(--space-md) 0;
  padding-left: var(--space-xl);
  color: var(--text-secondary);
}

li {
  margin-bottom: var(--space-sm);
  line-height: var(--leading-relaxed);
}

ul li::marker {
  color: var(--color-primary);
}

ol li::marker {
  color: var(--color-secondary);
}

/* Blockquotes */
blockquote {
  border-left: 4px solid var(--color-secondary);
  margin: var(--space-lg) 0;
  padding: var(--space-md) var(--space-lg);
  background: rgba(var(--color-secondary-rgb), 0.05);
  color: var(--text-secondary);
  font-style: italic;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: 0 0 10px rgba(var(--color-secondary-rgb), 0.1);
}

/* Emphasis */
strong, b {
  color: var(--text-primary);
  font-weight: 600;
}

em, i {
  color: var(--color-primary);
  font-style: italic;
}

/* Small text */
small {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* Code typography */
code {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  background: var(--bg-elevated);
  padding: 0.125rem 0.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(var(--color-accent-rgb), 0.2);
}

pre {
  font-family: var(--font-mono);
  background: var(--bg-elevated);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin: var(--space-lg) 0;
  overflow-x: auto;
  box-shadow: var(--shadow-md);
  position: relative;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-primary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* Selection */
::selection {
  background: rgba(var(--color-primary-rgb), 0.3);
  color: var(--text-primary);
}

::-moz-selection {
  background: rgba(var(--color-primary-rgb), 0.3);
  color: var(--text-primary);
}


/* Layout */
/* ==========================================================================
   Layout and Grid System
   ========================================================================== */

/* Main layout container */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-md);
  position: relative;
  z-index: 1;
}

/* Content wrapper */
.content-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

/* Grid system */
.grid {
  display: grid;
  gap: var(--space-lg);
}

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

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

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

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

@media (min-width: 769px) and (max-width: 1024px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Flexbox utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

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

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-around {
  justify-content: space-around;
}

.justify-start {
  justify-content: flex-start;
}

.justify-end {
  justify-content: flex-end;
}

/* Spacing utilities */
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }
.gap-2xl { gap: var(--space-2xl); }

/* Margin utilities */
.m-0 { margin: 0; }
.m-xs { margin: var(--space-xs); }
.m-sm { margin: var(--space-sm); }
.m-md { margin: var(--space-md); }
.m-lg { margin: var(--space-lg); }
.m-xl { margin: var(--space-xl); }
.m-2xl { margin: var(--space-2xl); }

.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

.ml-0 { margin-left: 0; }
.ml-xs { margin-left: var(--space-xs); }
.ml-sm { margin-left: var(--space-sm); }
.ml-md { margin-left: var(--space-md); }
.ml-lg { margin-left: var(--space-lg); }
.ml-xl { margin-left: var(--space-xl); }
.ml-2xl { margin-left: var(--space-2xl); }

.mr-0 { margin-right: 0; }
.mr-xs { margin-right: var(--space-xs); }
.mr-sm { margin-right: var(--space-sm); }
.mr-md { margin-right: var(--space-md); }
.mr-lg { margin-right: var(--space-lg); }
.mr-xl { margin-right: var(--space-xl); }
.mr-2xl { margin-right: var(--space-2xl); }

/* Padding utilities */
.p-0 { padding: 0; }
.p-xs { padding: var(--space-xs); }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }
.p-2xl { padding: var(--space-2xl); }

.pt-0 { padding-top: 0; }
.pt-xs { padding-top: var(--space-xs); }
.pt-sm { padding-top: var(--space-sm); }
.pt-md { padding-top: var(--space-md); }
.pt-lg { padding-top: var(--space-lg); }
.pt-xl { padding-top: var(--space-xl); }
.pt-2xl { padding-top: var(--space-2xl); }

.pb-0 { padding-bottom: 0; }
.pb-xs { padding-bottom: var(--space-xs); }
.pb-sm { padding-bottom: var(--space-sm); }
.pb-md { padding-bottom: var(--space-md); }
.pb-lg { padding-bottom: var(--space-lg); }
.pb-xl { padding-bottom: var(--space-xl); }
.pb-2xl { padding-bottom: var(--space-2xl); }

.pl-0 { padding-left: 0; }
.pl-xs { padding-left: var(--space-xs); }
.pl-sm { padding-left: var(--space-sm); }
.pl-md { padding-left: var(--space-md); }
.pl-lg { padding-left: var(--space-lg); }
.pl-xl { padding-left: var(--space-xl); }
.pl-2xl { padding-left: var(--space-2xl); }

.pr-0 { padding-right: 0; }
.pr-xs { padding-right: var(--space-xs); }
.pr-sm { padding-right: var(--space-sm); }
.pr-md { padding-right: var(--space-md); }
.pr-lg { padding-right: var(--space-lg); }
.pr-xl { padding-right: var(--space-xl); }
.pr-2xl { padding-right: var(--space-2xl); }

/* Width utilities */
.w-full { width: 100%; }
.w-auto { width: auto; }
.w-fit { width: fit-content; }

/* Height utilities */
.h-full { height: 100%; }
.h-auto { height: auto; }
.h-fit { height: fit-content; }

/* Text alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-justify { text-align: justify; }

/* Display utilities */
.block { display: block; }
.inline { display: inline; }
.inline-block { display: inline-block; }
.hidden { display: none; }

/* Position utilities */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* ==========================================================================
   Responsive Layout
   ========================================================================== */

/* Mobile-first responsive design */

/* Extra small devices (phones, 576px and down) */
@media (max-width: 575px) {
  body {
    padding: var(--space-sm);
  }
  
  main {
    padding: var(--space-sm);
  }
  
  article {
    padding: var(--space-md);
    margin: var(--space-sm) 0;
  }
  
  h1 {
    font-size: var(--text-3xl);
  }
  
  h2 {
    font-size: var(--text-2xl);
  }
  
  h3 {
    font-size: var(--text-xl);
  }
  
  .menu {
    width: 90%;
    right: 5%;
  }
}

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
  body {
    padding: var(--space-md);
  }
  
  main {
    padding: var(--space-md);
  }
  
  .menu {
    width: 60%;
  }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
  body {
    padding: var(--space-lg);
  }
  
  main {
    padding: var(--space-lg);
  }
  
  article {
    padding: var(--space-xl);
  }
  
  .menu {
    position: sticky;
    top: var(--space-sm);
    bottom: auto;
    left: auto;
    width: auto;
    max-width: 800px;
    margin: 0 auto var(--space-xl) auto;
    border-radius: var(--radius-lg);
  }
  
  .menu ul {
    display: flex !important;
    justify-content: center;
    flex-direction: row;
    background: rgba(var(--bg-base), 0.8);
    border-radius: var(--radius-lg);
  }
  
  .menu li {
    border: none;
    border-right: 1px solid rgba(var(--color-primary-rgb), 0.2);
  }
  
  .menu li:last-child {
    border-right: none;
  }
  
  .menu a {
    text-align: center;
    padding: var(--space-md) var(--space-lg);
    border-left: none;
    border-bottom: 3px solid transparent;
  }
  
  .menu a:hover {
    transform: translateY(-2px);
    border-bottom-color: var(--color-secondary);
    background: rgba(var(--color-secondary-rgb), 0.2);
    border-left: none;
  }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
  main {
    padding: var(--space-xl);
  }
  
  article {
    padding: var(--space-2xl);
  }
  
  .content-wrapper {
    max-width: 900px;
  }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
  main {
    max-width: 1400px;
    padding: var(--space-2xl);
  }
  
  .content-wrapper {
    max-width: 1000px;
  }
}

/* Ultra wide screens (1400px and up) */
@media (min-width: 1400px) {
  main {
    max-width: 1600px;
  }
  
  .content-wrapper {
    max-width: 1200px;
  }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  /* Optimize for high DPI displays */
  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
}

/* Landscape orientation adjustments */
@media (orientation: landscape) and (max-height: 600px) {
  body {
    padding: var(--space-sm);
  }
  
  main {
    padding: var(--space-sm);
  }
  
  .menu {
    position: fixed;
    top: var(--space-sm);
  }
}

/* Print styles */
@media print {
  body {
    background: white !important;
    color: black !important;
    padding: 0;
  }
  
  .menu,
  .video-background,
  body::before,
  body::after {
    display: none !important;
  }
  
  article {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    background: white !important;
  }
  
  a {
    color: black !important;
    text-decoration: underline !important;
  }
  
  h1, h2, h3, h4, h5, h6 {
    color: black !important;
    text-shadow: none !important;
    background: none !important;
    -webkit-text-fill-color: black !important;
  }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  body::before {
    animation: none !important;
  }
}

/* Dark mode preference (for future themes) */
@media (prefers-color-scheme: dark) {
  /* Cyberpunk theme is already dark, so no changes needed */
}

/* Light mode preference (for future themes) */
@media (prefers-color-scheme: light) {
  /* Could be used to switch to a light theme automatically */
}

/* High contrast preference */
@media (prefers-contrast: high) {
  :root {
    --color-primary: #00ffff;
    --color-secondary: #ff00ff;
    --color-accent: #00ff00;
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --bg-base: #000000;
    --bg-surface: #111111;
  }
}


/* Components */
/* ==========================================================================
   Navigation Component
   ========================================================================== */

/* Navigation Menu */
.menu-toggle {
  display: none;
}

.menu {
  width: 40%;
  background: linear-gradient(135deg, 
    rgba(var(--color-primary-rgb), 0.1), 
    rgba(var(--color-secondary-rgb), 0.1));
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  position: fixed;
  bottom: 0;
  right: 15px;
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-md);
}

.menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: none;
  flex-direction: column;
  background: rgba(var(--bg-base), 0.95);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.menu li {
  border-bottom: 1px solid rgba(var(--color-primary-rgb), 0.2);
}

.menu li:last-child {
  border-bottom: none;
}

.menu a {
  color: var(--text-primary);
  text-decoration: none;
  text-align: right;
  padding: var(--space-md) var(--space-lg);
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: var(--transition-normal);
  border-left: 3px solid transparent;
}

.menu a:hover {
  color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
  border-left-color: var(--color-primary);
  text-shadow: var(--shadow-md);
  transform: translateX(5px);
}

/* Active menu states */
.menu a.active {
  color: var(--color-secondary);
  background: rgba(var(--color-secondary-rgb), 0.15);
  border-left-color: var(--color-secondary);
  text-shadow: 0 0 10px rgba(var(--color-secondary-rgb), 0.5);
  font-weight: 600;
}

/* Menu button for mobile */
.menu-button {
  display: block;
  background: var(--gradient-primary);
  color: var(--bg-base);
  border: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: bold;
  cursor: pointer;
  text-align: center;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.menu-button:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* Menu toggle functionality */
.menu-toggle:checked + .menu ul {
  display: flex !important;
  animation: slideUp 0.3s ease-out;
}

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

/* Blur overlay when menu is open */
.menu-toggle:checked ~ main {
  filter: blur(2px);
  transition: filter var(--transition-normal);
}

/* Page-specific navigation highlighting */
.page-index .nav-index,
.page-projects .nav-projects,
.page-about .nav-about,
.page-contact .nav-contact {
  color: var(--color-secondary) !important;
  background: rgba(var(--color-secondary-rgb), 0.15) !important;
  border-left-color: var(--color-secondary) !important;
  text-shadow: 0 0 10px rgba(var(--color-secondary-rgb), 0.5) !important;
  font-weight: 600;
}

/* Desktop navigation layout */
@media (min-width: 768px) {
  .menu-toggle,
  .menu-button {
    display: none;
  }

  .menu {
    position: sticky;
    top: var(--space-sm);
    bottom: auto;
    left: auto;
    width: auto;
    max-width: 800px;
    margin: 0 auto var(--space-xl) auto;
    border-radius: var(--radius-lg);
  }

  .menu ul {
    display: flex !important;
    justify-content: center;
    flex-direction: row;
    background: rgba(var(--bg-base), 0.8);
    border-radius: var(--radius-lg);
    animation: none;
  }

  .menu li {
    border: none;
    border-right: 1px solid rgba(var(--color-primary-rgb), 0.2);
  }

  .menu li:last-child {
    border-right: none;
  }

  .menu a {
    text-align: center;
    padding: var(--space-md) var(--space-lg);
    border-left: none;
    border-bottom: 3px solid transparent;
    transform: none;
  }

  .menu a:hover {
    transform: translateY(-2px);
    border-bottom-color: var(--color-secondary);
    background: rgba(var(--color-secondary-rgb), 0.2);
    border-left: none;
  }

  .page-index .nav-index:hover,
  .page-projects .nav-projects:hover,
  .page-about .nav-about:hover,
  .page-contact .nav-contact:hover {
    transform: translateY(-2px);
    border-bottom-color: var(--color-secondary);
    background: rgba(var(--color-secondary-rgb), 0.2);
  }
}

/* ==========================================================================
   Article Component
   ========================================================================== */

/* Article container */
article {
  max-width: 800px;
  margin: 0 auto;
  background: rgba(var(--bg-surface), 0.8);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(10px);
  position: relative;
}

/* Post metadata */
.post-meta {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  margin-bottom: var(--space-xl);
  padding: var(--space-md);
  background: var(--bg-surface);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
}

/* Post state indicator */
.post-state {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.post-state.draft {
  background: rgba(var(--color-warning-rgb), 0.2);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
  box-shadow: 0 0 10px rgba(var(--color-warning-rgb), 0.3);
}

.post-state.published {
  background: rgba(var(--color-accent-rgb), 0.2);
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  box-shadow: 0 0 10px rgba(var(--color-accent-rgb), 0.3);
}

/* Post preview for listings */
.post-preview {
  background: rgba(var(--bg-surface), 0.6);
  border: 1px solid rgba(var(--color-primary-rgb), 0.3);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  transition: var(--transition-normal);
  backdrop-filter: blur(5px);
}

.post-preview:hover {
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  background: rgba(var(--bg-surface), 0.8);
}

.post-preview h3 {
  margin-top: 0;
  margin-bottom: var(--space-sm);
}

.post-preview h3 a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition-normal);
}

.post-preview h3 a:hover {
  color: var(--color-secondary);
  text-shadow: 0 0 10px rgba(var(--color-secondary-rgb), 0.5);
}

.post-excerpt {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-top: var(--space-sm);
}

/* Posts list container */
.posts-list {
  margin-top: var(--space-2xl);
}

.posts-list h2 {
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-xl);
  text-shadow: 0 0 10px rgba(var(--color-primary-rgb), 0.3);
}

/* Suggested post section */
.suggested-post {
  margin-top: var(--space-2xl);
  padding: var(--space-lg);
  background: rgba(var(--bg-elevated), 0.8);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.suggested-post h3 {
  color: var(--color-accent);
  margin-top: 0;
  margin-bottom: var(--space-md);
  font-size: var(--text-lg);
}

.suggested-post .shared-tag {
  display: inline-block;
  background: rgba(var(--color-accent-rgb), 0.2);
  color: var(--color-accent);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  border: 1px solid var(--color-accent);
}

/* Responsive article layout */
@media (min-width: 768px) {
  article {
    padding: var(--space-2xl);
  }

  .post-meta {
    padding: var(--space-lg);
  }

  .page-blog-post main {
    padding-bottom: 6rem;
  }
}

@media (min-width: 1024px) {
  article {
    padding: var(--space-2xl);
  }
}

/* Article content spacing */
article > *:first-child {
  margin-top: 0;
}

article > *:last-child {
  margin-bottom: 0;
}

/* Image handling within articles */
article img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: var(--space-lg) 0;
}

/* Table styling within articles */
article table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

article th,
article td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 1px solid rgba(var(--color-primary-rgb), 0.2);
}

article th {
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
  font-weight: 600;
  text-transform: uppercase;
  font-size: var(--text-sm);
  letter-spacing: 0.05em;
}

article tr:hover {
  background: rgba(var(--color-primary-rgb), 0.05);
}

/* ==========================================================================
   Tags Component
   ========================================================================== */

/* Tags styling */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.tag {
  display: inline-block;
  background: rgba(var(--color-primary-rgb), 0.1);
  color: var(--color-primary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  border: 1px solid rgba(var(--color-primary-rgb), 0.3);
  transition: var(--transition-normal);
  font-family: var(--font-mono);
}

.tag:hover {
  background: rgba(var(--color-secondary-rgb), 0.2);
  color: var(--color-secondary);
  border-color: var(--color-secondary);
  text-shadow: 0 0 5px rgba(var(--color-secondary-rgb), 0.5);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Tag variations */
.tag.primary {
  background: rgba(var(--color-primary-rgb), 0.2);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.tag.secondary {
  background: rgba(var(--color-secondary-rgb), 0.2);
  color: var(--color-secondary);
  border-color: var(--color-secondary);
}

.tag.accent {
  background: rgba(var(--color-accent-rgb), 0.2);
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.tag.warning {
  background: rgba(var(--color-warning-rgb), 0.2);
  color: var(--color-warning);
  border-color: var(--color-warning);
}

/* Tag sizes */
.tag.small {
  font-size: 0.625rem;
  padding: 0.125rem var(--space-xs);
}

.tag.large {
  font-size: var(--text-sm);
  padding: var(--space-sm) var(--space-md);
}

/* Tag list page styling */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

.tag-list .tag {
  font-size: var(--text-sm);
  padding: var(--space-sm) var(--space-md);
}

/* Tag page header */
.tag-page-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
  padding: var(--space-xl);
  background: rgba(var(--bg-elevated), 0.8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-primary);
}

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

.tag-page-header .tag-count {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

/* Tag cloud styling */
.tag-cloud {
  text-align: center;
  margin: var(--space-2xl) 0;
}

.tag-cloud .tag {
  margin: var(--space-xs);
  font-size: var(--text-sm);
}

.tag-cloud .tag.weight-1 { font-size: var(--text-xs); }
.tag-cloud .tag.weight-2 { font-size: var(--text-sm); }
.tag-cloud .tag.weight-3 { font-size: var(--text-base); }
.tag-cloud .tag.weight-4 { font-size: var(--text-lg); }
.tag-cloud .tag.weight-5 { font-size: var(--text-xl); }

/* Responsive tag adjustments */
@media (max-width: 768px) {
  .post-tags {
    gap: var(--space-xs);
  }
  
  .tag {
    font-size: 0.625rem;
    padding: 0.125rem var(--space-xs);
  }
  
  .tag-list {
    gap: var(--space-sm);
  }
}

/* ==========================================================================
   Code Component
   ========================================================================== */

/* Inline code */
code {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-accent);
  background: var(--bg-elevated);
  padding: 0.125rem 0.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(var(--color-accent-rgb), 0.2);
}

/* Code blocks */
pre {
  font-family: var(--font-mono);
  background: var(--bg-elevated);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin: var(--space-lg) 0;
  overflow-x: auto;
  box-shadow: var(--shadow-md);
  position: relative;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-primary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

/* Code block with language indicator */
pre[data-lang]::before {
  content: attr(data-lang);
  position: absolute;
  top: var(--space-xs);
  right: var(--space-sm);
  background: var(--color-primary);
  color: var(--bg-base);
  padding: 0.125rem var(--space-xs);
  border-radius: var(--radius-sm);
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Syntax highlighting for common languages */
.language-javascript,
.language-js {
  border-color: var(--color-warning);
}

.language-javascript::before,
.language-js::before {
  background: var(--color-warning);
  content: "JS";
}

.language-typescript,
.language-ts {
  border-color: #3178c6;
}

.language-typescript::before,
.language-ts::before {
  background: #3178c6;
  content: "TS";
}

.language-python,
.language-py {
  border-color: #3776ab;
}

.language-python::before,
.language-py::before {
  background: #3776ab;
  content: "PY";
}

.language-go {
  border-color: #00add8;
}

.language-go::before {
  background: #00add8;
  content: "GO";
}

.language-rust,
.language-rs {
  border-color: #ce422b;
}

.language-rust::before,
.language-rs::before {
  background: #ce422b;
  content: "RUST";
}

.language-css {
  border-color: #1572b6;
}

.language-css::before {
  background: #1572b6;
  content: "CSS";
}

.language-html {
  border-color: #e34f26;
}

.language-html::before {
  background: #e34f26;
  content: "HTML";
}

.language-json {
  border-color: var(--color-accent);
}

.language-json::before {
  background: var(--color-accent);
  content: "JSON";
}

.language-yaml,
.language-yml {
  border-color: var(--color-secondary);
}

.language-yaml::before,
.language-yml::before {
  background: var(--color-secondary);
  content: "YAML";
}

.language-markdown,
.language-md {
  border-color: var(--text-secondary);
}

.language-markdown::before,
.language-md::before {
  background: var(--text-secondary);
  content: "MD";
}

.language-bash,
.language-shell,
.language-sh {
  border-color: var(--text-primary);
}

.language-bash::before,
.language-shell::before,
.language-sh::before {
  background: var(--text-primary);
  content: "BASH";
}

/* Copy button for code blocks */
.code-block-wrapper {
  position: relative;
}

.copy-button {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background: rgba(var(--bg-base), 0.8);
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  cursor: pointer;
  transition: var(--transition-fast);
  backdrop-filter: blur(5px);
}

.copy-button:hover {
  background: var(--color-primary);
  color: var(--bg-base);
  box-shadow: var(--shadow-sm);
}

.copy-button.copied {
  background: var(--color-accent);
  color: var(--bg-base);
  border-color: var(--color-accent);
}

/* Responsive code adjustments */
@media (max-width: 768px) {
  pre {
    padding: var(--space-sm);
    margin: var(--space-md) 0;
    border-radius: var(--radius-sm);
  }
  
  pre code {
    font-size: 0.75rem;
  }
  
  .copy-button {
    top: var(--space-xs);
    right: var(--space-xs);
    padding: 0.125rem var(--space-xs);
  }
}

/* Scrollbar styling for code blocks */
pre::-webkit-scrollbar {
  height: 8px;
}

pre::-webkit-scrollbar-track {
  background: var(--bg-base);
  border-radius: var(--radius-sm);
}

pre::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

pre::-webkit-scrollbar-thumb:hover {
  background: var(--color-secondary);
}

/* ==========================================================================
   GitHub Repository Cards Component
   ========================================================================== */

/* GitHub repository cards - Cyberpunk theme integration */
img[src*="opengraph.githubassets.com"] {
  max-width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-primary);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  
  /* Dark mode filters for better integration */
  filter: 
    brightness(0.75)
    contrast(1.15)
    saturate(0.8);
  
  /* Layout and spacing */
  display: block;
  margin: var(--space-lg) 0;
  position: relative;
}

img[src*="opengraph.githubassets.com"]:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-secondary);
  
  filter: 
    brightness(0.85)
    contrast(1.25)
    saturate(1.0);
}

/* Cyberpunk glow overlay */
img[src*="opengraph.githubassets.com"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    rgba(var(--color-primary-rgb), 0.05) 0%, 
    rgba(var(--color-secondary-rgb), 0.05) 100%);
  border-radius: var(--radius-md);
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: var(--transition-normal);
}

img[src*="opengraph.githubassets.com"]:hover::before {
  opacity: 1;
}

/* Link wrapper styling for GitHub cards */
a[href*="github.com"] img[src*="opengraph.githubassets.com"] {
  /* Ensure proper link behavior */
  cursor: pointer;
}

a[href*="github.com"]:hover img[src*="opengraph.githubassets.com"] {
  /* Inherit hover effects from image */
}

/* GitHub card container for better layout */
.github-card {
  display: block;
  margin: var(--space-lg) 0;
  text-decoration: none;
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
}

.github-card:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.github-card img {
  margin: 0;
  display: block;
  width: 100%;
}

/* Responsive adjustments for GitHub cards */
@media (max-width: 768px) {
  img[src*="opengraph.githubassets.com"] {
    margin: var(--space-md) 0;
  }
}

/* Alternative styling for different themes */
:root[data-theme="minimal"] img[src*="opengraph.githubassets.com"] {
  filter: 
    brightness(1.1)
    contrast(1.05)
    saturate(0.9);
  border-color: var(--color-primary);
}

:root[data-theme="minimal"] img[src*="opengraph.githubassets.com"]:hover {
  filter: 
    brightness(1.15)
    contrast(1.1)
    saturate(1.0);
}

:root[data-theme="classic"] img[src*="opengraph.githubassets.com"] {
  filter: 
    brightness(1.0)
    contrast(1.0)
    saturate(1.0);
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

:root[data-theme="classic"] img[src*="opengraph.githubassets.com"]:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}


/* Utilities */
/* ==========================================================================
   Animations and Transitions
   ========================================================================== */

/* Keyframe animations */
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

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

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

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

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

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

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

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

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 5px rgba(var(--color-primary-rgb), 0.3);
  }
  50% {
    box-shadow: 0 0 20px rgba(var(--color-primary-rgb), 0.6);
  }
}

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translateY(0);
  }
  40%, 43% {
    transform: translateY(-10px);
  }
  70% {
    transform: translateY(-5px);
  }
  90% {
    transform: translateY(-2px);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-5px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(5px);
  }
}

/* Animation utility classes */
.animate-fade-in {
  animation: fadeIn var(--transition-normal) ease-out;
}

.animate-slide-up {
  animation: slideUp var(--transition-normal) ease-out;
}

.animate-slide-down {
  animation: slideDown var(--transition-normal) ease-out;
}

.animate-slide-left {
  animation: slideLeft var(--transition-normal) ease-out;
}

.animate-slide-right {
  animation: slideRight var(--transition-normal) ease-out;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

.animate-glow {
  animation: glow 2s infinite;
}

.animate-bounce {
  animation: bounce 1s infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

.animate-shake {
  animation: shake 0.5s ease-in-out;
}

/* Transition utility classes */
.transition-none {
  transition: none;
}

.transition-all {
  transition: all var(--transition-normal);
}

.transition-colors {
  transition: color var(--transition-normal), background-color var(--transition-normal), border-color var(--transition-normal);
}

.transition-opacity {
  transition: opacity var(--transition-normal);
}

.transition-transform {
  transition: transform var(--transition-normal);
}

.transition-fast {
  transition-duration: var(--transition-fast);
}

.transition-slow {
  transition-duration: var(--transition-slow);
}

/* Hover effects */
.hover-lift:hover {
  transform: translateY(-2px);
  transition: transform var(--transition-normal);
}

.hover-glow:hover {
  box-shadow: var(--shadow-lg);
  transition: box-shadow var(--transition-normal);
}

.hover-scale:hover {
  transform: scale(1.05);
  transition: transform var(--transition-normal);
}

.hover-rotate:hover {
  transform: rotate(5deg);
  transition: transform var(--transition-normal);
}

/* Focus effects */
.focus-glow:focus {
  box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.3);
  outline: none;
}

/* Loading animations */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(var(--color-primary-rgb), 0.3), 
    transparent);
  animation: shimmer 1.5s infinite;
}

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

/* Stagger animations for lists */
.stagger-children > * {
  animation: slideUp var(--transition-normal) ease-out;
}

.stagger-children > *:nth-child(1) { animation-delay: 0.1s; }
.stagger-children > *:nth-child(2) { animation-delay: 0.2s; }
.stagger-children > *:nth-child(3) { animation-delay: 0.3s; }
.stagger-children > *:nth-child(4) { animation-delay: 0.4s; }
.stagger-children > *:nth-child(5) { animation-delay: 0.5s; }
.stagger-children > *:nth-child(6) { animation-delay: 0.6s; }
.stagger-children > *:nth-child(7) { animation-delay: 0.7s; }
.stagger-children > *:nth-child(8) { animation-delay: 0.8s; }
.stagger-children > *:nth-child(9) { animation-delay: 0.9s; }
.stagger-children > *:nth-child(10) { animation-delay: 1.0s; }

/* ==========================================================================
   Accessibility Utilities
   ========================================================================== */

/* Screen reader only content */
.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;
}

.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  padding: inherit;
  margin: inherit;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb), 0.3);
}

/* High contrast focus for better visibility */
.focus-visible:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 6px rgba(var(--color-primary-rgb), 0.4);
}

/* Skip links for keyboard navigation */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-primary);
  color: var(--bg-base);
  padding: var(--space-sm) var(--space-md);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  z-index: var(--z-tooltip);
  transition: var(--transition-fast);
}

.skip-link:focus {
  top: 6px;
  outline: 2px solid var(--bg-base);
  outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .animate-fade-in,
  .animate-slide-up,
  .animate-slide-down,
  .animate-slide-left,
  .animate-slide-right,
  .animate-pulse,
  .animate-glow,
  .animate-bounce,
  .animate-spin,
  .animate-shake {
    animation: none !important;
  }
  
  .hover-lift:hover,
  .hover-scale:hover,
  .hover-rotate:hover {
    transform: none !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-primary: #00ffff;
    --color-secondary: #ff00ff;
    --color-accent: #00ff00;
    --color-warning: #ffff00;
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-muted: #cccccc;
    --bg-base: #000000;
    --bg-surface: #111111;
    --bg-elevated: #222222;
  }
  
  /* Increase border visibility */
  article,
  .menu,
  pre,
  .tag,
  img[src*="opengraph.githubassets.com"] {
    border-width: 2px !important;
  }
  
  /* Remove subtle effects that may not be visible */
  body::before,
  body::after,
  .video-background {
    display: none !important;
  }
}

/* Color blindness support */
.colorblind-friendly {
  /* Use patterns and shapes in addition to colors */
}

.colorblind-friendly .tag.primary::before {
  content: "●";
  margin-right: var(--space-xs);
}

.colorblind-friendly .tag.secondary::before {
  content: "■";
  margin-right: var(--space-xs);
}

.colorblind-friendly .tag.accent::before {
  content: "▲";
  margin-right: var(--space-xs);
}

.colorblind-friendly .tag.warning::before {
  content: "⚠";
  margin-right: var(--space-xs);
}

/* Font size preferences */
@media (prefers-reduced-data: reduce) {
  /* Reduce data usage by hiding non-essential visual elements */
  .video-background,
  body::before {
    display: none !important;
  }
  
  /* Simplify animations */
  * {
    animation: none !important;
    transition: none !important;
  }
}

/* Touch target sizing for mobile accessibility */
@media (max-width: 768px) {
  a,
  button,
  .menu a,
  .tag {
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-md);
  }
  
  .menu a {
    padding: var(--space-md) var(--space-lg);
  }
}

/* Keyboard navigation indicators */
.keyboard-navigation a:focus,
.keyboard-navigation button:focus {
  background: rgba(var(--color-primary-rgb), 0.1);
  border-radius: var(--radius-sm);
}

/* ARIA live regions for dynamic content */
.live-region {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Error and success states */
.error {
  color: var(--color-warning);
  border-color: var(--color-warning);
}

.success {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.warning {
  color: var(--color-warning);
  border-color: var(--color-warning);
}

/* Form accessibility */
.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 600;
  color: var(--text-primary);
}

.form-input {
  width: 100%;
  padding: var(--space-sm);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-family: inherit;
}

.form-input:focus {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(var(--color-secondary-rgb), 0.3);
}

.form-error {
  color: var(--color-warning);
  font-size: var(--text-sm);
  margin-top: var(--space-xs);
}

/* Table accessibility */
table {
  border-collapse: collapse;
  width: 100%;
}

th {
  text-align: left;
  font-weight: 600;
}

th[scope="col"] {
  border-bottom: 2px solid var(--color-primary);
}

th[scope="row"] {
  border-right: 2px solid var(--color-primary);
}

/* Image accessibility */
img:not([alt]) {
  outline: 3px solid var(--color-warning);
}

img[alt=""] {
  /* Decorative images - no outline needed */
}


/* Theme-specific overrides */
/* ==========================================================================
   Cyberpunk Theme
   ========================================================================== */

/* Cyberpunk-specific enhancements */
:root[data-theme="cyberpunk"],
:root {
  /* Enhanced cyberpunk color palette */
  --cyberpunk-neon-blue: #00d4ff;
  --cyberpunk-neon-pink: #ff0080;
  --cyberpunk-neon-green: #00ff41;
  --cyberpunk-neon-purple: #8000ff;
  --cyberpunk-neon-orange: #ff8000;
  
  /* Cyberpunk gradients */
  --cyberpunk-gradient-1: linear-gradient(135deg, var(--cyberpunk-neon-blue), var(--cyberpunk-neon-pink));
  --cyberpunk-gradient-2: linear-gradient(135deg, var(--cyberpunk-neon-green), var(--cyberpunk-neon-purple));
  --cyberpunk-gradient-3: linear-gradient(135deg, var(--cyberpunk-neon-pink), var(--cyberpunk-neon-orange));
  
  /* Cyberpunk shadows */
  --cyberpunk-glow-blue: 0 0 20px rgba(0, 212, 255, 0.5);
  --cyberpunk-glow-pink: 0 0 20px rgba(255, 0, 128, 0.5);
  --cyberpunk-glow-green: 0 0 20px rgba(0, 255, 65, 0.5);
}

/* Enhanced background effects for cyberpunk theme */
body[data-theme="cyberpunk"]::before,
body::before {
  background: linear-gradient(135deg,
    var(--bg-base) 0%,
    #1a0a1a 25%,
    #0a1a1a 50%,
    #1a1a0a 75%,
    var(--bg-base) 100%);
  background-size: 400% 400%;
  animation: gradientShift 20s ease infinite;
}

/* Cyberpunk-specific animations */
@keyframes cyberPulse {
  0%, 100% {
    box-shadow: 
      0 0 5px rgba(var(--color-primary-rgb), 0.3),
      inset 0 0 5px rgba(var(--color-primary-rgb), 0.1);
  }
  50% {
    box-shadow: 
      0 0 20px rgba(var(--color-primary-rgb), 0.6),
      inset 0 0 10px rgba(var(--color-primary-rgb), 0.2);
  }
}

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

@keyframes glitchEffect {
  0%, 100% {
    transform: translateX(0);
  }
  10% {
    transform: translateX(-2px);
  }
  20% {
    transform: translateX(2px);
  }
  30% {
    transform: translateX(-1px);
  }
  40% {
    transform: translateX(1px);
  }
  50% {
    transform: translateX(0);
  }
}

/* Cyberpunk enhancements for specific components */

/* Enhanced article styling */
article[data-theme="cyberpunk"],
article {
  background: 
    linear-gradient(135deg, 
      rgba(var(--color-primary-rgb), 0.05) 0%, 
      rgba(var(--color-secondary-rgb), 0.05) 100%),
    rgba(var(--bg-surface), 0.8);
  border-image: linear-gradient(135deg, var(--color-primary), var(--color-secondary)) 1;
}

/* Enhanced navigation for cyberpunk */
.menu[data-theme="cyberpunk"],
.menu {
  background: 
    linear-gradient(135deg, 
      rgba(var(--color-primary-rgb), 0.1), 
      rgba(var(--color-secondary-rgb), 0.1)),
    rgba(var(--bg-base), 0.95);
  backdrop-filter: blur(15px);
}

.menu-button[data-theme="cyberpunk"],
.menu-button {
  background: var(--cyberpunk-gradient-1);
  text-shadow: 0 0 10px rgba(var(--bg-base), 0.8);
}

.menu-button:hover {
  background: var(--cyberpunk-gradient-2);
  box-shadow: var(--cyberpunk-glow-blue);
}

/* Enhanced code blocks for cyberpunk */
pre[data-theme="cyberpunk"],
pre {
  background: 
    linear-gradient(135deg, 
      rgba(var(--color-primary-rgb), 0.05) 0%, 
      rgba(var(--color-secondary-rgb), 0.05) 100%),
    var(--bg-elevated);
  border-image: linear-gradient(135deg, var(--color-primary), var(--color-secondary)) 1;
}

/* Enhanced tags for cyberpunk */
.tag[data-theme="cyberpunk"],
.tag {
  background: 
    linear-gradient(135deg, 
      rgba(var(--color-primary-rgb), 0.1), 
      rgba(var(--color-secondary-rgb), 0.1));
  border: 1px solid transparent;
  background-clip: padding-box;
  position: relative;
}

.tag::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: inherit;
  z-index: -1;
  margin: -1px;
}

/* Cyberpunk hover effects */
.cyberpunk-hover:hover {
  animation: cyberPulse 1s ease-in-out;
}

.cyberpunk-glitch:hover {
  animation: glitchEffect 0.3s ease-in-out;
}

/* Data stream effect for background */
.data-stream {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.data-stream::before {
  content: '01001000 01100101 01101100 01101100 01101111 00100000 01010111 01101111 01110010 01101100 01100100';
  position: absolute;
  top: -100px;
  left: 10%;
  color: rgba(var(--color-primary-rgb), 0.1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  white-space: nowrap;
  animation: dataStream 10s linear infinite;
}

.data-stream::after {
  content: '01000010 01101001 01100010 00100000 01000010 01101100 01101111 01100111';
  position: absolute;
  top: -100px;
  right: 10%;
  color: rgba(var(--color-secondary-rgb), 0.1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  white-space: nowrap;
  animation: dataStream 15s linear infinite 5s;
}

/* Cyberpunk utility classes */
.cyber-glow {
  box-shadow: var(--cyberpunk-glow-blue);
}

.cyber-glow-pink {
  box-shadow: var(--cyberpunk-glow-pink);
}

.cyber-glow-green {
  box-shadow: var(--cyberpunk-glow-green);
}

.cyber-gradient {
  background: var(--cyberpunk-gradient-1);
}

.cyber-gradient-2 {
  background: var(--cyberpunk-gradient-2);
}

.cyber-gradient-3 {
  background: var(--cyberpunk-gradient-3);
}

.cyber-border {
  border: 1px solid transparent;
  background: linear-gradient(var(--bg-surface), var(--bg-surface)) padding-box,
              linear-gradient(135deg, var(--color-primary), var(--color-secondary)) border-box;
}

/* Cyberpunk text effects */
.cyber-text {
  background: var(--cyberpunk-gradient-1);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 20px rgba(var(--color-primary-rgb), 0.3);
}

.cyber-text-glow {
  text-shadow: 
    0 0 5px rgba(var(--color-primary-rgb), 0.5),
    0 0 10px rgba(var(--color-primary-rgb), 0.3),
    0 0 15px rgba(var(--color-primary-rgb), 0.2);
}

/* Responsive cyberpunk adjustments */
@media (max-width: 768px) {
  .data-stream::before,
  .data-stream::after {
    display: none;
  }
}

/* Reduced motion for cyberpunk theme */
@media (prefers-reduced-motion: reduce) {
  .cyberpunk-hover:hover,
  .cyberpunk-glitch:hover {
    animation: none !important;
  }
  
  .data-stream::before,
  .data-stream::after {
    animation: none !important;
    display: none;
  }
  
  body::before {
    animation: none !important;
  }
}


/* ==========================================================================
   Legacy Compatibility Layer
   ========================================================================== */

/* Ensure backward compatibility with existing templates */

/* Page-specific body classes for navigation highlighting */
.page-index .nav-index,
.page-projects .nav-projects,
.page-about .nav-about,
.page-contact .nav-contact {
  color: var(--color-secondary) !important;
  background: rgba(var(--color-secondary-rgb), 0.15) !important;
  border-left-color: var(--color-secondary) !important;
  text-shadow: 0 0 10px rgba(var(--color-secondary-rgb), 0.5) !important;
  font-weight: 600;
}

/* Ensure menu toggle functionality works */
.menu-toggle:checked + .menu ul {
  display: flex !important;
  animation: slideUp 0.3s ease-out;
}

.menu-toggle:checked ~ main {
  filter: blur(2px);
  transition: filter var(--transition-normal);
}

/* ==========================================================================
   Custom Properties for Theme Switching
   ========================================================================== */

/* Theme switching support via data attributes */
[data-theme="cyberpunk"] {
  /* Default theme - already defined in variables.css */
}

[data-theme="minimal"] {
  --color-primary: #3b82f6;
  --color-secondary: #8b5cf6;
  --color-accent: #10b981;
  --color-warning: #f59e0b;
  --bg-base: #ffffff;
  --bg-surface: #f8fafc;
  --bg-elevated: #f1f5f9;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
}

[data-theme="classic"] {
  --color-primary: #2563eb;
  --color-secondary: #7c3aed;
  --color-accent: #059669;
  --color-warning: #dc2626;
  --bg-base: #f9fafb;
  --bg-surface: #ffffff;
  --bg-elevated: #f3f4f6;
  --text-primary: #111827;
  --text-secondary: #374151;
  --text-muted: #6b7280;
}

/* ==========================================================================
   Development Utilities
   ========================================================================== */

/* Debug mode - shows component boundaries */
.debug * {
  outline: 1px solid rgba(255, 0, 0, 0.3);
}

.debug .component {
  outline: 2px solid rgba(0, 255, 0, 0.5);
}

.debug .layout {
  outline: 2px solid rgba(0, 0, 255, 0.5);
}

/* Performance monitoring */
.perf-monitor {
  position: fixed;
  top: 10px;
  right: 10px;
  background: rgba(var(--bg-base), 0.9);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: var(--space-xs);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  z-index: var(--z-tooltip);
  backdrop-filter: blur(5px);
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  /* Hide interactive elements */
  .menu,
  .video-background,
  body::before,
  body::after,
  .skip-link,
  .perf-monitor {
    display: none !important;
  }
  
  /* Optimize for print */
  body {
    background: white !important;
    color: black !important;
    padding: 0;
    font-size: 12pt;
    line-height: 1.4;
  }
  
  article {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    background: white !important;
    page-break-inside: avoid;
  }
  
  h1, h2, h3, h4, h5, h6 {
    color: black !important;
    text-shadow: none !important;
    background: none !important;
    -webkit-text-fill-color: black !important;
    page-break-after: avoid;
  }
  
  a {
    color: black !important;
    text-decoration: underline !important;
  }
  
  a[href^="http"]:after {
    content: " (" attr(href) ")";
    font-size: 10pt;
    color: #666;
  }
  
  pre {
    border: 1px solid #ccc !important;
    background: #f5f5f5 !important;
    page-break-inside: avoid;
  }
  
  .tag {
    border: 1px solid #ccc !important;
    background: #f0f0f0 !important;
    color: black !important;
  }
  
  img {
    max-width: 100% !important;
    page-break-inside: avoid;
  }
}