:root {
  --black: #0a0a0f;
  --text: #f8f9fa;
  --accent: #6366f1;
  --accent-glow: #8b5cf6;
  --gray-light: rgba(248, 249, 250, 0.7);
  --gray-border: rgba(248, 249, 250, 0.1);
  --surface: rgba(15, 15, 25, 0.8);
  --surface-hover: rgba(20, 20, 35, 0.9);
  
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Monaco, 'Cascadia Code', monospace;
  
  --radius: 12px;
  --radius-lg: 20px;
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  
  --container-max: 1200px;
  --border: 1px solid var(--gray-border);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --glow: 0 0 20px rgba(99, 102, 241, 0.3);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-ui);
  background: var(--black);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(99, 102, 241, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
  animation: gradient-shift 20s ease infinite;
}

@keyframes gradient-shift {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.nav {
  position: fixed;
  top: var(--spacing-md);
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: var(--border);
  border-radius: var(--radius-lg);
  z-index: 100;
  box-shadow: var(--shadow-lg);
  transition: all 0.3s ease;
}

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

.nav-container {
  padding: var(--spacing-sm) var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  background: linear-gradient(135deg, var(--accent), var(--accent-glow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: all 0.3s ease;
}

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

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--gray-light);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius);
  transition: all 0.3s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--accent);
  background: rgba(99, 102, 241, 0.1);
  transform: translateY(-2px);
}

.main {
  padding-top: 120px;
}

.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 50%, var(--accent-glow) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: title-glow 3s ease-in-out infinite alternate;
}

@keyframes title-glow {
  0% { filter: brightness(1); }
  100% { filter: brightness(1.2); }
}

.hero-subtitle {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  color: var(--gray-light);
  margin-bottom: var(--spacing-2xl);
  font-weight: 400;
  opacity: 0;
  animation: fade-in-up 1s ease 0.5s forwards;
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fade-in-up 1s ease 1s forwards;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s ease;
}

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

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

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--glow);
}

.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border-color: var(--gray-border);
}

.btn-ghost:hover {
  background: var(--surface-hover);
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--spacing-2xl);
  color: var(--text);
  text-align: center;
  background: linear-gradient(135deg, var(--text), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.projects {
  padding: var(--spacing-2xl) 0;
  position: relative;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-xl);
  max-width: 800px;
  margin: 0 auto;
}

.project-card {
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  position: relative;
  overflow: hidden;
  transition: all 0.4s ease;
  box-shadow: var(--shadow);
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-glow));
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

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

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--glow);
  border-color: rgba(99, 102, 241, 0.3);
}

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

.project-title {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--text), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.project-description {
  color: var(--gray-light);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
  font-size: 16px;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm);
  background: rgba(99, 102, 241, 0.05);
  border-radius: var(--radius);
  border: 1px solid rgba(99, 102, 241, 0.1);
}

.project-status {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gray-light);
  padding: 4px 8px;
  background: rgba(139, 92, 246, 0.1);
  border-radius: 6px;
  border: 1px solid rgba(139, 92, 246, 0.2);
}

.project-version {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
}

.project-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius);
  transition: all 0.3s ease;
}

.project-link:hover {
  background: rgba(99, 102, 241, 0.1);
  transform: translateX(5px);
}

.about {
  padding: var(--spacing-2xl) 0;
  text-align: center;
}

.about-list {
  list-style: none;
  max-width: 800px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.about-list li {
  color: var(--gray-light);
  line-height: 1.6;
  font-size: 16px;
  padding: var(--spacing-lg);
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: var(--border);
  border-radius: var(--radius-lg);
  position: relative;
  transition: all 0.3s ease;
}

.about-list li::before {
  content: '✦';
  color: var(--accent);
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  font-size: 18px;
}

.about-list li:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(99, 102, 241, 0.3);
}

.contact {
  padding: var(--spacing-2xl) 0;
  text-align: center;
}

.contact-links {
  display: flex;
  gap: var(--spacing-xl);
  justify-content: center;
  flex-wrap: wrap;
  max-width: 600px;
  margin: 0 auto;
}

.contact-link {
  color: var(--text);
  text-decoration: none;
  font-size: 18px;
  font-weight: 600;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: var(--border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.contact-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
  transition: left 0.5s ease;
}

.contact-link:hover::before {
  left: 100%;
}

.contact-link:hover {
  color: var(--accent);
  transform: translateY(-5px);
  box-shadow: var(--glow);
  border-color: rgba(99, 102, 241, 0.3);
}

.footer {
  padding: var(--spacing-2xl) 0;
  text-align: center;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.footer-text {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent), var(--accent-glow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (max-width: 1024px) {
  .nav {
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    right: var(--spacing-sm);
    transform: none;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
  }
}

@media (max-width: 768px) {
  .nav-container {
    padding: var(--spacing-xs) var(--spacing-md);
    gap: var(--spacing-md);
  }
  
  .nav-links {
    gap: var(--spacing-sm);
  }
  
  .nav-link {
    font-size: 13px;
    padding: 6px 10px;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .main {
    padding-top: 100px;
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
  }
  
  .btn {
    width: 100%;
    max-width: 250px;
    justify-content: center;
  }
  
  .about-list {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .contact-links {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
  }
  
  .contact-link {
    width: 100%;
    max-width: 250px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }
  
  .section-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
  }
  
  .project-card {
    padding: var(--spacing-md);
  }
}