:root {
  /* Colors */
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary: #8b5cf6;
  --accent: #ff0000;
  --accent-light: #f472b6;
  
  /* Neutrals */
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-tertiary: #1a1a24;
  --surface: rgba(255, 255, 255, 0.05);
  --surface-hover: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(255, 255, 255, 0.2);
  
  /* Text */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-tertiary: rgba(255, 255, 255, 0.5);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(178, 1, 1, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ============================================
   Particle Canvas Background
   ============================================ */

#particleCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

/* ============================================
   Maintenance Header
   ============================================ */

#maintenance-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: linear-gradient(135deg, #ef4444, #dc2626);
  box-shadow: var(--shadow-md);
}

.maintenance-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  color: white;
  font-weight: 500;
}

.maintenance-content a {
  color: white;
  text-decoration: underline;
  transition: opacity var(--transition-fast);
}

.maintenance-content a:hover {
  opacity: 0.8;
}

/* ============================================
   Container
   ============================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
  position: relative;
  z-index: 1;
}

/* ============================================
   Hero Section
   ============================================ */

.hero-section {
  text-align: center;
  padding: var(--spacing-2xl) 0;
  animation: fadeInUp 0.8s ease-out;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  line-height: 1.1;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 5s ease infinite;
  background-size: 200% 200%;
}

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

.hero-subtitle {
  font-size: clamp(1.25rem, 4vw, 2rem);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-description {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-note {
  margin-top: var(--spacing-md);
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

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

.hero-note a:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* ============================================
   Stats Section
   ============================================ */

.stats-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-2xl) 0;
  animation: fadeInUp 0.8s ease-out 0.8s both;
}

.stat-card {
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.stat-card:hover {
  background: var(--surface-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.stat-card:hover::before {
  transform: scaleX(1);
}

.stat-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
  filter: grayscale(0.3);
  transition: filter var(--transition-base);
}

.stat-card:hover .stat-icon {
  filter: grayscale(0);
}

.stat-number {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  font-family: 'JetBrains Mono', monospace;
  transition: opacity 0.3s ease;
  min-height: 1.5em;
  display: block;
  word-wrap: break-word;
  overflow-wrap: break-word;
  line-height: 1.4;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

/* ============================================
   Links Section
   ============================================ */

.links-section {
  margin: var(--spacing-2xl) 0;
  animation: fadeInUp 0.8s ease-out 1s both;
}

.section-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 600;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

.link-card {
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  display: block;
}

.link-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 0;
}

.link-card > * {
  position: relative;
  z-index: 1;
}

.link-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.link-card:hover::before {
  opacity: 0.1;
}

.link-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
  display: block;
  transition: transform var(--transition-base);
}

.link-card:hover .link-icon {
  transform: scale(1.1) rotate(5deg);
}

.link-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.link-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
}

/* ============================================
   About Section
   ============================================ */

.about-section {
  margin: var(--spacing-2xl) 0;
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.about-content {
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  max-width: 900px;
  margin: 0 auto;
}

.about-text {
  margin-bottom: var(--spacing-lg);
}

.about-text p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
  font-size: 1.05rem;
}

.about-text p:last-child {
  margin-bottom: 0;
}

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

.about-text a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
  font-weight: 500;
}

.about-text a:hover {
  color: var(--primary);
  text-decoration: underline;
}

.about-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border);
}

.social-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  background: var(--surface-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-base);
}

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

.social-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-xs);
}

.social-link span:not(.social-icon):not(.social-count) {
  font-weight: 600;
  font-size: 1.1rem;
}

.social-count {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-weight: 400;
}

/* ============================================
   Projects Section
   ============================================ */

.projects-section {
  margin: var(--spacing-2xl) 0;
  animation: fadeInUp 0.8s ease-out 0.8s both;
}

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

.project-card {
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  background: var(--surface-hover);
}

.project-card:hover::before {
  transform: scaleX(1);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
  gap: var(--spacing-sm);
}

.project-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  flex: 1;
}

.project-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--surface-hover);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  font-family: 'JetBrains Mono', monospace;
  white-space: nowrap;
  flex-shrink: 0;
}

.project-description {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
  flex: 1;
  font-size: 0.95rem;
}

.project-links {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border);
}

.project-link {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  border: none;
}

.project-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

/* ============================================
   Footer
   ============================================ */

.footer {
  text-align: center;
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-2xl);
  border-top: 1px solid var(--border);
  animation: fadeInUp 0.8s ease-out 1.2s both;
}

.footer-text {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
}

.version-badge {
  display: inline-block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.5rem;
  margin-right: var(--spacing-xs);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  font-weight: 500;
}

.heart {
  color: var(--accent);
  animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
}

.footer-contact {
  color: var(--text-tertiary);
  font-size: 0.75rem;
}

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

.footer-contact a:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* ============================================
   Animations
   ============================================ */

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

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
  .container {
    padding: var(--spacing-md) var(--spacing-sm);
  }
  
  .hero-section {
    padding: var(--spacing-xl) 0;
  }
  
  .about-content {
    padding: var(--spacing-md);
  }
  
  .about-links {
    grid-template-columns: 1fr;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .project-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .stats-section {
    grid-template-columns: 1fr;
  }
  
  .links-grid {
    grid-template-columns: 1fr;
  }
  
  #maintenance-header {
    font-size: 0.875rem;
  }
  
  .maintenance-content {
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.5rem;
  }
  
  .stat-card,
  .link-card {
    padding: var(--spacing-md);
  }
}

/* ============================================
   Utility Classes
   ============================================ */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}