@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Color Palette - Professional Dark */
  --bg-primary: #0c0c14;
  --bg-secondary: #13131f;
  --bg-tertiary: #1a1a2e;
  --bg-card: rgba(26, 26, 46, 0.6);
  --bg-glass: rgba(255, 255, 255, 0.02);

  /* Accent Colors - Refined */
  --accent-primary: #818cf8;
  --accent-secondary: #a78bfa;
  --accent-tertiary: #c4b5fd;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a78bfa 100%);
  --accent-gradient-subtle: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
  --accent-glow: rgba(129, 140, 248, 0.25);

  /* Text Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Borders */
  --border-color: rgba(255, 255, 255, 0.06);
  --border-subtle: rgba(255, 255, 255, 0.03);
  --border-glow: rgba(129, 140, 248, 0.2);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 50px var(--accent-glow);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* Spacing */
  --section-padding: 120px 0;
  --container-width: 1140px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  font-size: 16px;
}

/* Background Effects */
.bg-gradient {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(99, 102, 241, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 24px 0;
  transition: var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(12, 12, 20, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo::after {
  content: '/>';
  color: var(--accent-primary);
  margin-left: 2px;
}

.nav-links {
  display: flex;
  gap: 40px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition-fast);
  letter-spacing: 0.01em;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lang-toggle {
  display: flex;
  background: var(--bg-glass);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.lang-btn {
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  letter-spacing: 0.05em;
}

.lang-btn.active {
  background: var(--accent-gradient);
  color: var(--text-primary);
}

.lang-btn:hover:not(.active) {
  color: var(--text-secondary);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  position: relative;
}

.hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 80px;
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-greeting {
  font-size: 1rem;
  color: var(--accent-primary);
  font-weight: 500;
  margin-bottom: 16px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-name {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 12px;
  color: var(--text-primary);
  letter-spacing: -0.03em;
}

.hero-title {
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--accent-secondary);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.8;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  background: var(--accent-gradient);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 12px;
  transition: var(--transition-normal);
  box-shadow: 0 4px 24px rgba(99, 102, 241, 0.3);
}

.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.4);
}

.hero-image {
  flex: 0 0 360px;
  position: relative;
}

.hero-image::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120%;
  height: 120%;
  background: var(--accent-gradient);
  border-radius: 50%;
  opacity: 0.1;
  filter: blur(80px);
}

.hero-image img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--border-color);
  position: relative;
  z-index: 1;
}

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 40px;
}

.social-links a {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-muted);
  transition: var(--transition-normal);
}

.social-links a:hover {
  background: var(--accent-gradient);
  color: var(--text-primary);
  border-color: transparent;
  transform: translateY(-2px);
}

/* Section Styles */
section {
  padding: var(--section-padding);
}

.section-header {
  text-align: center;
  margin-bottom: 80px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: start;
}

.about-text {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.9;
}

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

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 28px;
  text-align: center;
  transition: var(--transition-normal);
}

.stat-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

.stat-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.stat-value {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Skills Section */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  transition: var(--transition-normal);
}

.skill-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

.skill-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  display: inline-block;
  padding: 6px 12px;
  background: var(--accent-gradient-subtle);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.skill-card:hover .skill-tag {
  border-color: var(--border-glow);
  color: var(--accent-tertiary);
}

/* Experience Section */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary));
}

.timeline-item {
  position: relative;
  padding-left: 48px;
  padding-bottom: 48px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -5px;
  top: 8px;
  width: 11px;
  height: 11px;
  background: var(--accent-primary);
  border-radius: 50%;
  border: 2px solid var(--bg-primary);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  transition: var(--transition-normal);
}

.timeline-content:hover {
  border-color: var(--border-glow);
}

.timeline-company {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.timeline-role {
  font-size: 0.95rem;
  color: var(--accent-primary);
  font-weight: 500;
  margin-bottom: 8px;
}

.timeline-period {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.timeline-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Projects Section */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 1000px;
  margin: 0 auto;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 40px;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: var(--transition-normal);
}

.project-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

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

.project-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.project-role {
  font-size: 0.85rem;
  color: var(--accent-primary);
  font-weight: 500;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Blog Section */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition-normal);
}

.blog-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

.blog-image {
  width: 100%;
  height: 140px;
  background: var(--accent-gradient-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  border-bottom: 1px solid var(--border-color);
}

.blog-content {
  padding: 24px;
}

.blog-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.5;
}

.blog-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.blog-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-primary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition-fast);
}

.blog-link:hover {
  color: var(--accent-tertiary);
  gap: 10px;
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 36px;
  text-align: center;
  transition: var(--transition-normal);
}

.contact-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

.contact-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.contact-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.contact-value {
  font-size: 0.95rem;
  color: var(--text-primary);
  font-weight: 500;
}

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

.contact-value a:hover {
  color: var(--accent-tertiary);
}

.contact-social {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 16px;
}

.contact-social a {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-muted);
  transition: var(--transition-normal);
}

.contact-social a:hover {
  background: var(--accent-gradient);
  color: var(--text-primary);
  border-color: transparent;
}

/* Footer */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.footer-text {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px 0;
  }

  .hero .container {
    flex-direction: column;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-image {
    flex: 0 0 280px;
    order: -1;
  }

  .hero-image img {
    height: 280px;
  }

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

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

  .projects-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(12, 12, 20, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-toggle {
    display: block;
  }

  .hero-name {
    font-size: 2.5rem;
  }

  .hero-title {
    font-size: 1.2rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .section-header {
    margin-bottom: 48px;
  }

  .skills-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .timeline::before {
    left: 6px;
  }

  .timeline-item {
    padding-left: 40px;
  }

  .timeline-dot {
    left: 1px;
  }
}

@media (max-width: 480px) {
  .hero-image {
    flex: 0 0 200px;
  }

  .hero-image img {
    height: 200px;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }

  .timeline-content {
    padding: 24px;
  }

  .project-card {
    padding: 28px;
  }
}