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

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #0a0a0a;
  color: #ffffff;
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1rem 0;
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-link {
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.main-nav {
  display: flex;
  gap: 2rem;
}

.main-nav a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  position: relative;
}

.main-nav a:hover {
  color: #ffffff;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #6366f1, #8b5cf6);
  transition: width 0.3s ease;
}

.main-nav a:hover::after {
  width: 100%;
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 2rem;
  background: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.1) 0%, transparent 70%), 
              radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
              #0a0a0a;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="0.5" fill="%23ffffff" opacity="0.05"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  pointer-events: none;
}

.hero-content {
  max-width: 600px;
  text-align: center;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  margin-bottom: 2rem;
  color: #a5b4fc;
}

.hero-name {
  font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #ffffff 0%, #e5e7eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.5rem;
  font-weight: 600;
  color: #9ca3af;
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 3rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  padding: 1rem 2rem;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  display: inline-block;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
  padding: 1rem 2rem;
  background: transparent;
  color: white;
  text-decoration: none;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-block;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.hero-image {
  margin-top: 3rem;
}

.profile-avatar {
  width: 120px;
  height: 120px;
  margin: 0 auto;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.avatar-placeholder {
  font-size: 2rem;
  font-weight: 700;
  color: white;
}

/* Section Styles */
.section-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 2rem;
}

.section-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 3rem;
  text-align: center;
  background: linear-gradient(135deg, #ffffff 0%, #e5e7eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* About Section */
.about-section {
  background: #111111;
}

.about-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.about-stats {
  display: grid;
  gap: 2rem;
}

.stat-item {
  text-align: center;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
  margin-top: 0.5rem;
}

/* Expertise Section */
.expertise-section {
  background: #0a0a0a;
}

.expertise-tags {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 4rem;
  flex-wrap: wrap;
}

.expertise-tag {
  padding: 0.75rem 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  transition: all 0.3s ease;
}

.expertise-tag.active,
.expertise-tag:hover {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: white;
  border-color: transparent;
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.expertise-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 2.5rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.expertise-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.expertise-card:hover {
  transform: translateY(-5px);
  border-color: rgba(99, 102, 241, 0.3);
}

.expertise-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  display: block;
}

.expertise-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: white;
  position: relative;
  z-index: 2;
}

.expertise-card p {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 2;
}

.card-link {
  color: #6366f1;
  text-decoration: none;
  font-weight: 600;
  position: relative;
  z-index: 2;
}

.card-link:hover {
  color: #8b5cf6;
}

/* Experience Section */
.experience-section {
  background: #111111;
}

.experience-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, #6366f1, #8b5cf6);
  transform: translateX(-50%);
}

.timeline-item {
  margin-bottom: 4rem;
  position: relative;
  width: 45%;
}

.timeline-item:nth-child(odd) {
  margin-left: 0;
}

.timeline-item:nth-child(even) {
  margin-left: 55%;
}

.timeline-item::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  border-radius: 50%;
  top: 1rem;
}

.timeline-item:nth-child(odd)::before {
  right: -53px;
}

.timeline-item:nth-child(even)::before {
  left: -53px;
}

.timeline-date {
  color: #6366f1;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.timeline-item h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: white;
}

.timeline-item p {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

/* Projects Section */
.projects-section {
  background: #0a0a0a;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.project-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: rgba(99, 102, 241, 0.3);
}

.project-image {
  height: 200px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.project-placeholder {
  font-size: 4rem;
  opacity: 0.8;
}

.project-content {
  padding: 2rem;
}

.project-category {
  color: #6366f1;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
}

.project-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: white;
}

.project-content p {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.project-tech {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tech-tag {
  padding: 0.5rem 1rem;
  background: rgba(99, 102, 241, 0.2);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  color: #a5b4fc;
}

/* Contact Section */
.contact-section {
  background: #111111;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.contact-info h3 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: white;
}

.contact-info p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.1rem;
  margin-bottom: 3rem;
  line-height: 1.6;
}

.contact-details {
  display: grid;
  gap: 2rem;
}

.contact-item {
  display: grid;
  gap: 0.5rem;
}

.contact-label {
  color: #6366f1;
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-item a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.contact-item a:hover {
  color: #6366f1;
}

.contact-form {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 2.5rem;
}

.contact-form h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 2rem;
  color: white;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  color: white;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #6366f1;
  background: rgba(255, 255, 255, 0.08);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 3rem;
}

.social-link {
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  transition: all 0.3s ease;
  text-decoration: none;
}

.social-link:hover {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: white;
  transform: translateY(-2px);
}

.social-link svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* Responsive Design */
@media (max-width: 768px) {
  .main-nav {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav-container {
    flex-direction: column;
    gap: 1rem;
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .about-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .timeline-item {
    width: 100%;
    margin-left: 0 !important;
    padding-left: 2rem;
  }
  
  .experience-timeline::before {
    left: 0;
  }
  
  .timeline-item::before {
    left: -8px !important;
  }
  
  .section-content {
    padding: 4rem 1rem;
  }
}

@media (max-width: 480px) {
  .hero-cta {
    gap: 0.5rem;
  }
  
  .btn-primary,
  .btn-secondary {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
  }
  
  .expertise-grid {
    grid-template-columns: 1fr;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
}