/* Modern Futuristic Design System */
:root {
  /* Color Palette */
  --primary: #00d4ff;
  --primary-dark: #0099cc;
  --secondary: #ff006e;
  --accent: #8338ec;
  --success: #00ff88;
  --warning: #ffaa00;
  --error: #ff3366;
  
  /* Background Colors */
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --bg-glass: rgba(26, 26, 26, 0.8);
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --text-accent: var(--primary);
  
  /* Light Theme Colors */
  --bg-primary-light: #ffffff;
  --bg-secondary-light: #f8f9fa;
  --bg-tertiary-light: #e9ecef;
  --bg-glass-light: rgba(255, 255, 255, 0.8);
  --text-primary-light: #212529;
  --text-secondary-light: #6c757d;
  --text-muted-light: #adb5bd;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-heading: 'Space Grotesk', sans-serif;
  
  /* Font Sizes */
  --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;
  --text-5xl: 3rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
  --shadow-neon: 0 0 30px rgba(0, 212, 255, 0.5);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  
  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

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

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

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 var(--space-md) 0;
  color: var(--text-primary);
}

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

p {
  margin: 0 0 var(--space-md) 0;
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--primary-dark);
  text-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
}

/* Modern Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--text-primary);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-neon);
}

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

.btn-secondary:hover {
  background: var(--primary);
  color: var(--bg-primary);
  box-shadow: var(--shadow-glow);
}

.btn-ghost {
  background: var(--bg-glass);
  color: var(--text-primary);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-ghost:hover {
  background: var(--bg-tertiary);
  border-color: var(--primary);
}

/* Glassmorphism Cards */
.card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-normal);
}

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

.card-glow {
  box-shadow: var(--shadow-glow);
}

/* Grid System */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.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); }

/* Flexbox Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* Spacing Utilities */
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.m-sm { margin: var(--space-sm); }
.m-md { margin: var(--space-md); }
.m-lg { margin: var(--space-lg); }

/* Text Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-accent { color: var(--text-accent); }

/* Modern Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background: rgba(10, 10, 10, 0.1);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: var(--transition-normal);
}

.nav.scrolled {
  background: rgba(26, 26, 26, 0.8);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
}

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

.nav-logo {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-lg);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Mobile Navigation */
.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  margin: 3px 0;
  transition: var(--transition-fast);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  z-index: -2;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  z-index: -1;
}

.hero-content {
  max-width: 800px;
  padding: var(--space-2xl);
}

.hero-title {
  font-size: var(--text-5xl);
  font-weight: 700;
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--text-primary), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  min-height: 1.2em;
  display: flex;
  align-items: center;
  justify-content: center;
}

.typing-text {
  display: inline-block;
  min-height: 1.2em;
  text-align: center;
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Section Styles */
.section {
  padding: var(--space-2xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-md);
}

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

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

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

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

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

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
  }
  50% {
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.6);
  }
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease-out;
}

.animate-fadeInLeft {
  animation: fadeInLeft 0.6s ease-out;
}

.animate-fadeInRight {
  animation: fadeInRight 0.6s ease-out;
}

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

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

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .hero-title {
    font-size: var(--text-4xl);
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .container {
    padding: 0 var(--space-sm);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--text-3xl);
  }
  
  .section-title {
    font-size: var(--text-3xl);
  }
}

/* Scroll Animations */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* 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(255, 255, 255, 0.1), transparent);
  animation: loading 1.5s infinite;
}

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

/* Hero Section Enhancements */
.hero-avatar {
  position: relative;
  margin-bottom: var(--space-xl);
  margin-top: 60px;
}

.avatar-image {
  width: 200px;
  height: 200px;
  border-radius: 20px;
  object-fit: cover;
  border: 4px solid var(--primary);
  box-shadow: var(--shadow-glow);
  transition: var(--transition-normal);
}

.avatar-glow {
  position: absolute;
  top: -10px;
  left: -10px;
  right: -10px;
  bottom: -10px;
  border-radius: 50%;
  background: linear-gradient(45deg, var(--primary), var(--accent), var(--secondary));
  opacity: 0.3;
  filter: blur(20px);
  animation: pulse 2s infinite;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin: var(--space-xl) 0;
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
  padding: var(--space-md);
}

.stat-item .counter {
  display: block;
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--space-sm);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-social {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  font-size: var(--text-xl);
  transition: var(--transition-normal);
}

.social-link:hover {
  background: var(--primary);
  color: var(--bg-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: -1;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--primary);
  border-radius: 50%;
  animation: float 6s infinite ease-in-out;
}

.particle:nth-child(1) {
  top: 20%;
  left: 20%;
  animation-delay: 0s;
}

.particle:nth-child(2) {
  top: 60%;
  left: 80%;
  animation-delay: 2s;
}

.particle:nth-child(3) {
  top: 80%;
  left: 40%;
  animation-delay: 4s;
}

.particle:nth-child(4) {
  top: 40%;
  left: 60%;
  animation-delay: 1s;
}

.particle:nth-child(5) {
  top: 10%;
  left: 70%;
  animation-delay: 3s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
    opacity: 0.7;
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
    opacity: 1;
  }
}

/* About Section */
.about-content h3 {
  color: var(--primary);
  margin-bottom: var(--space-md);
}

.research-interests {
  margin-top: var(--space-lg);
}

.interest-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg-tertiary);
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: var(--transition-fast);
}

.tag:hover {
  background: var(--primary);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

.position-info {
  margin: var(--space-md) 0;
}

.position-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.position-institution {
  color: var(--primary);
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.position-period {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.contact-info {
  margin-top: var(--space-lg);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
}

.contact-item i {
  color: var(--primary);
  width: 20px;
}

/* Research Section */
.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.research-card {
  overflow: hidden;
  transition: var(--transition-normal);
}

.research-card:hover {
  transform: translateY(-8px);
}

.research-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
}

.research-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-normal);
}

.research-card:hover .research-image img {
  transform: scale(1.1);
}

.research-content {
  padding: var(--space-lg);
}

.research-content h3 {
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  font-size: var(--text-xl);
}

.research-content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

.research-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

/* Contact Section */
.contact-form-element {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.btn-success {
  background: linear-gradient(135deg, #28a745, #20c997);
  border-color: #28a745;
}

.btn-danger {
  background: linear-gradient(135deg, #dc3545, #fd7e14);
  border-color: #dc3545;
}

.btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group input,
.form-group textarea {
  padding: var(--space-sm);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  color: var(--text-primary);
  font-family: var(--font-primary);
  transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-2xl) 0 var(--space-lg) 0;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-section h4 {
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  font-size: var(--text-lg);
}

.footer-section p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-section ul li {
  margin-bottom: var(--space-sm);
}

.footer-section ul li a {
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.footer-section ul li a:hover {
  color: var(--primary);
}

.social-links {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.social-links a:hover {
  background: var(--primary);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.footer-bottom p {
  margin: var(--space-xs) 0;
}

/* Navigation Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: var(--text-lg);
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
  color: var(--primary);
}

/* Enhanced Mobile Navigation */
@media (max-width: 768px) {
  .nav-actions {
    gap: var(--space-sm);
  }
  
  .hero-stats {
    gap: var(--space-lg);
  }
  
  .stat-item .counter {
    font-size: var(--text-3xl);
  }
  
  .research-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-avatar .avatar-image {
    width: 150px;
    height: 150px;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--space-md);
  }
  
  .hero-social {
    gap: var(--space-sm);
  }
  
  .social-link {
    width: 40px;
    height: 40px;
    font-size: var(--text-lg);
  }
}

/* Projects Page Styles */
.projects-filter {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.filter-buttons {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--space-sm) var(--space-lg);
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary);
  color: var(--bg-primary);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.project-search-container {
  position: relative;
  display: flex;
  align-items: center;
}

.project-search {
  padding: var(--space-sm) var(--space-lg);
  padding-right: 3rem;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-family: var(--font-primary);
  transition: var(--transition-fast);
  min-width: 250px;
}

.project-search:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.2);
}

.project-search-container i {
  position: absolute;
  right: var(--space-md);
  color: var(--text-muted);
  pointer-events: none;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.project-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-normal);
  position: relative;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.project-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: relative;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-normal);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.9), rgba(131, 56, 236, 0.9));
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-normal);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-card:hover .project-image img {
  transform: scale(1.1);
}

.project-links {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
}

.project-content {
  padding: var(--space-lg);
}

.project-title {
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  font-size: var(--text-xl);
  font-weight: 600;
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

.project-technologies {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.tech-tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg-tertiary);
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: var(--transition-fast);
}

.tech-tag:hover {
  background: var(--primary);
  color: var(--bg-primary);
  transform: translateY(-2px);
}

/* Featured Project */
.featured-project {
  margin-top: var(--space-xl);
}

.featured-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.featured-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.featured-image img {
  width: 100%;
  height: auto;
  display: block;
}

.image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.8), rgba(131, 56, 236, 0.8));
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-normal);
}

.featured-image:hover .image-overlay {
  opacity: 1;
}

.overlay-content {
  text-align: center;
  color: var(--text-primary);
}

.overlay-content h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-sm);
}

.project-meta {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.project-year,
.project-status {
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
}

.project-year {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.project-status {
  background: var(--success);
  color: var(--bg-primary);
}

.project-highlights {
  margin: var(--space-lg) 0;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
}

.highlight-item i {
  color: var(--primary);
  font-size: var(--text-xl);
  width: 30px;
  text-align: center;
}

.highlight-item div {
  display: flex;
  flex-direction: column;
}

.highlight-item strong {
  color: var(--text-primary);
  font-weight: 600;
}

.highlight-item span {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

/* Collaborations */
.collaborations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.collaboration-card {
  text-align: center;
  padding: var(--space-xl);
  transition: var(--transition-normal);
}

.collaboration-card:hover {
  transform: translateY(-4px);
}

.collaboration-logo {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  color: var(--text-primary);
  font-size: var(--text-2xl);
}

.collaboration-card h4 {
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  font-size: var(--text-xl);
}

.collaboration-card p {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.collaboration-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

/* Responsive Design for Projects */
@media (max-width: 768px) {
  .projects-filter {
    flex-direction: column;
    align-items: stretch;
  }
  
  .filter-buttons {
    justify-content: center;
  }
  
  .project-search {
    min-width: 100%;
  }
  
  .featured-content {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .collaborations-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .filter-buttons {
    flex-direction: column;
    gap: var(--space-sm);
  }
  
  .filter-btn {
    width: 100%;
    text-align: center;
  }
  
  .project-links {
    flex-direction: column;
  }
  
  .highlight-item {
    flex-direction: column;
    text-align: center;
  }
}

/* Outreach Section Styles */
.outreach-content {
  margin-top: var(--space-xl);
}

.outreach-intro {
  margin-bottom: var(--space-2xl);
}

.outreach-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

.outreach-stats .stat-item {
  text-align: center;
  padding: var(--space-md);
}

.outreach-stats .counter {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--space-sm);
}

.outreach-stats .stat-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

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

.media-category {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition-normal);
}

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

.media-category h4 {
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  font-size: var(--text-lg);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.media-category h4 i {
  color: var(--primary);
  font-size: var(--text-xl);
}

.media-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.media-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
  border: 1px solid transparent;
}

.media-item:hover {
  background: var(--bg-secondary);
  border-color: var(--primary);
  transform: translateX(4px);
}

.media-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  color: var(--text-primary);
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.media-content {
  flex: 1;
}

.media-content h5 {
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
  font-size: var(--text-base);
  font-weight: 600;
}

.media-content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  font-size: var(--text-sm);
  line-height: 1.4;
}

.media-content .btn {
  font-size: var(--text-sm);
  padding: var(--space-xs) var(--space-sm);
}

/* Responsive Design for Outreach */
@media (max-width: 768px) {
  .outreach-stats {
    gap: var(--space-lg);
  }
  
  .outreach-stats .counter {
    font-size: var(--text-2xl);
  }
  
  .media-grid {
    grid-template-columns: 1fr;
  }
  
  .media-item {
    flex-direction: column;
    text-align: center;
  }
  
  .media-icon {
    align-self: center;
  }
}

@media (max-width: 480px) {
  .outreach-stats {
    flex-direction: column;
    gap: var(--space-md);
  }
  
  .media-category {
    padding: var(--space-md);
  }
  
  .media-item {
    padding: var(--space-sm);
  }
}

/* Light Theme Styles */
[data-theme="light"] {
  --bg-primary: var(--bg-primary-light);
  --bg-secondary: var(--bg-secondary-light);
  --bg-tertiary: var(--bg-tertiary-light);
  --bg-glass: var(--bg-glass-light);
  --text-primary: var(--text-primary-light);
  --text-secondary: var(--text-secondary-light);
  --text-muted: var(--text-muted-light);
}

[data-theme="light"] .hero::before {
  background: linear-gradient(135deg, var(--bg-primary-light) 0%, var(--bg-secondary-light) 100%);
}

[data-theme="light"] .hero::after {
  background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.05) 0%, transparent 70%);
}

[data-theme="light"] .card {
  background: var(--bg-glass-light);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .nav {
  background: rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .nav.scrolled {
  background: rgba(248, 249, 250, 0.8);
  backdrop-filter: blur(20px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Performance Optimizations */
* {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  loading: lazy;
}

/* Critical CSS for above-the-fold content */
.hero {
  will-change: transform;
}

.hero-title {
  will-change: transform;
}

.typing-text {
  will-change: contents;
}

/* Reduce motion for users who prefer it */
@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;
  }
  
  .particle {
    animation: none;
  }
  
  .avatar-glow {
    animation: none;
  }
}

/* Print Styles */
@media print {
  .nav,
  .hero-particles,
  .btn,
  .social-link {
    display: none !important;
  }
  
  .hero {
    min-height: auto;
    padding: 2rem 0;
  }
  
  .section {
    padding: 1rem 0;
  }
  
  * {
    background: white !important;
    color: black !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --primary: #00bfff;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
  }
  
  .card {
    border: 2px solid var(--primary);
  }
  
  .btn {
    border: 2px solid var(--primary);
  }
}

/* Focus styles for accessibility */
*:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn:focus,
.social-link:focus,
.nav-link:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Skip to content link for screen readers */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary);
  color: var(--bg-primary);
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 1000;
}

.skip-link:focus {
  top: 6px;
}

/* Loading states */
.loading-skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}