* { margin: 0; padding: 0; box-sizing: border-box; }
  :root {
    --bg-primary: #0a0e27;
    --bg-secondary: #111638;
    --bg-card: #1a1f4a;
    --accent-blue: #4f8cff;
    --accent-purple: #a855f7;
    --accent-cyan: #06b6d4;
    --accent-orange: #f59e0b;
    --accent-green: #10b981;
    --accent-pink: #ec4899;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --border-color: rgba(255,255,255,0.08);
  }
  html { scroll-behavior: smooth; }
  body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
  }

  /* Navigation */
  nav {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    background: rgba(10, 14, 39, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
  }
  nav.scrolled { padding: 0.7rem 2rem; }
  .nav-container {
    max-width: 1300px; margin: 0 auto;
    display: flex; justify-content: space-between; align-items: center;
  }
  .logo {
    font-size: 1.5rem; font-weight: 800;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
  }
  .nav-links { display: flex; gap: 2rem; list-style: none; }
  .nav-links a {
    color: var(--text-secondary); text-decoration: none;
    font-weight: 500; font-size: 0.95rem;
    transition: color 0.3s; position: relative;
  }
  .nav-links a:hover { color: var(--text-primary); }
  .nav-links a::after {
    content: ''; position: absolute; bottom: -5px; left: 0;
    width: 0; height: 2px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    transition: width 0.3s;
  }
  .nav-links a:hover::after { width: 100%; }
  .hamburger { display: none; cursor: pointer; flex-direction: column; gap: 5px; }
  .hamburger span { width: 25px; height: 2px; background: white; transition: 0.3s; }

  /* Hero Section */
  hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 8rem 2rem 4rem;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('https://image.qwenlm.ai/public_source/5102bd1a-340d-41be-aa90-f4585578e4ac/1190b656d-6f50-47f1-ad2e-e6e2eb439954.png') center/cover;
  opacity: 0.25;
  z-index: 0;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 0%, var(--bg-primary) 80%);
  z-index: 1;
}
.hero-content {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
  position: relative;
  z-index: 2;
  width: 100%;
  text-align: center;
}
.hero-text .tag {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: rgba(79, 140, 255, 0.15);
  border: 1px solid rgba(79, 140, 255, 0.3);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--accent-blue);
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s ease;
}
.hero-text h1 {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.8s ease 0.1s both;
}
.hero-text h1 .gradient {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-text p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin: 0 auto 2rem;
  max-width: 600px;
  animation: fadeInUp 0.8s ease 0.2s both;
}
.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  animation: fadeInUp 0.8s ease 0.3s both;
}
.btn {
  padding: 0.9rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: white;
  box-shadow: 0 10px 30px rgba(79, 140, 255, 0.3);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(79, 140, 255, 0.5);
}
.btn-secondary {
  background: transparent;
  color: white;
  border: 1px solid rgba(255,255,255,0.2);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.4);
}
.hero-image {
  display: none;
}
.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: 3rem;
  justify-content: center;
  animation: fadeInUp 0.8s ease 0.5s both;
}
.stat-item h3 {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}.stat-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}
  /* Section Styles */
  section { padding: 6rem 2rem; }
  .section-container { max-width: 1300px; margin: 0 auto; }
  .section-header { text-align: center; margin-bottom: 4rem; }
  .section-header .tag {
    display: inline-block; padding: 0.4rem 1rem;
    background: rgba(168, 85, 247, 0.15);
    border: 1px solid rgba(168, 85, 247, 0.3);
    border-radius: 50px; font-size: 0.85rem;
    color: var(--accent-purple); margin-bottom: 1rem;
  }
  .section-header h2 {
    font-size: 2.8rem; font-weight: 800; margin-bottom: 1rem;
  }
  .section-header p {
    color: var(--text-secondary); max-width: 600px; margin: 0 auto;
  }

  /* About Section */
  .about { background: var(--bg-secondary); }
  .about-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 4rem;
    align-items: center;
  }
  .about-text h3 {
    font-size: 2rem; margin-bottom: 1.5rem;
  }
  .about-text p {
    color: var(--text-secondary); margin-bottom: 1rem;
  }
  .about-features {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
    margin-top: 2rem;
  }
  .about-feature {
    display: flex; align-items: center; gap: 0.8rem;
    padding: 1rem;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s;
  }
  .about-feature:hover {
    background: rgba(79, 140, 255, 0.05);
    border-color: rgba(79, 140, 255, 0.3);
    transform: translateY(-3px);
  }
  .about-feature .icon {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem;
  }
  .about-feature span { font-weight: 600; font-size: 0.9rem; }

  /* Skills Section */
  .skill-link {
  text-decoration: none;
  color: inherit;
  display: block;
}
.skill-link:hover {
  transform: translateY(-10px);
}
.skill-link .skill-card {
  margin: 0;
  height: 100%;
}
 .skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
  .skill-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.4s;
    position: relative; overflow: hidden;
    cursor: pointer;
  }
  .skill-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--card-accent);
    transform: scaleX(0);
    transition: transform 0.4s;
  }
  .skill-card:hover::before { transform: scaleX(1); }
  .skill-card:hover {
    transform: translateY(-10px);
    border-color: var(--card-accent);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  }
  .skill-card .skill-icon {
    width: 80px; height: 80px; margin: 0 auto 1.5rem;
    border-radius: 16px; overflow: hidden;
    display: flex; align-items: center; justify-content: center;
  }
  .skill-card .skill-icon img {
    width: 100%; height: 100%; object-fit: cover;
  }
  .skill-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
  .skill-card p { font-size: 0.85rem; color: var(--text-secondary); }
  .skill-card .skill-level {
    margin-top: 1rem;
    height: 4px; background: rgba(255,255,255,0.1);
    border-radius: 2px; overflow: hidden;
  }
  .skill-card .skill-level-fill {
    height: 100%; background: var(--card-accent);
    border-radius: 2px;
    transition: width 1s ease;
  }

  /* Projects Section */
  .projects { background: var(--bg-secondary); }
  .filter-buttons {
    display: flex; justify-content: center; gap: 0.8rem;
    flex-wrap: wrap; margin-bottom: 3rem;
  }
  .filter-btn {
    padding: 0.6rem 1.5rem;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
    cursor: pointer; font-weight: 500;
    transition: all 0.3s; font-size: 0.9rem;
  }
  .filter-btn:hover { color: white; border-color: rgba(255,255,255,0.3); }
  .filter-btn.active {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: white; border-color: transparent;
  }
  .projects-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
  }
  .project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s;
    position: relative;
  }
  .project-card.hidden { display: none; }
  .project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px rgba(0,0,0,0.4);
    border-color: rgba(79, 140, 255, 0.3);
  }
  .project-image {
    height: 200px; position: relative; overflow: hidden;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
    display: flex; align-items: center; justify-content: center;
  }
  .project-image img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.5s;
  }
  .project-card:hover .project-image img { transform: scale(1.1); }
  .project-image .overlay {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(10,14,39,0.9) 100%);
  }
  .project-category {
    position: absolute; top: 1rem; left: 1rem;
    padding: 0.3rem 0.8rem;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    font-size: 0.75rem; font-weight: 600;
    border: 1px solid rgba(255,255,255,0.1);
  }
  .project-content { padding: 1.5rem; }
  .project-content h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
  .project-content p {
    color: var(--text-secondary); font-size: 0.9rem;
    margin-bottom: 1rem;
  }
  .project-tags {
    display: flex; gap: 0.5rem; flex-wrap: wrap;
    margin-bottom: 1rem;
  }
  .project-tags span {
    padding: 0.25rem 0.7rem;
    background: rgba(79, 140, 255, 0.1);
    border: 1px solid rgba(79, 140, 255, 0.2);
    border-radius: 50px;
    font-size: 0.75rem; color: var(--accent-blue);
  }
  .project-link {
    display: inline-flex; align-items: center; gap: 0.5rem;
    color: var(--accent-blue); text-decoration: none;
    font-weight: 600; font-size: 0.9rem;
    transition: gap 0.3s;
  }
  .project-link:hover { gap: 0.8rem; }

  /* Contact Section */
  .contact-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 4rem;
  }
  .contact-info h3 { font-size: 2rem; margin-bottom: 1rem; }
  .contact-info p { color: var(--text-secondary); margin-bottom: 2rem; }
  .contact-item {
    display: flex; align-items: center; gap: 1rem;
    padding: 1rem; margin-bottom: 1rem;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s;
  }
  .contact-item:hover {
    background: rgba(79, 140, 255, 0.05);
    border-color: rgba(79, 140, 255, 0.3);
  }
  .contact-item .icon {
    width: 45px; height: 45px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem;
  }
  .contact-item .text strong { display: block; font-size: 0.9rem; }
  .contact-item .text span { color: var(--text-secondary); font-size: 0.85rem; }
  .contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px; padding: 2.5rem;
  }
  .form-group { margin-bottom: 1.5rem; }
  .form-group label {
    display: block; margin-bottom: 0.5rem;
    font-size: 0.9rem; font-weight: 500;
  }
  .form-group input, .form-group textarea {
    width: 100%; padding: 0.9rem 1rem;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    border-radius: 12px; color: white;
    font-family: inherit; font-size: 0.95rem;
    transition: all 0.3s;
  }
  .form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    background: rgba(79, 140, 255, 0.05);
  }
  .form-group textarea { resize: vertical; min-height: 120px; }

  /* Footer */
  footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem 2rem;
  }
  .footer-content {
    max-width: 1300px; margin: 0 auto;
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 1rem;
  }
  .footer-links { display: flex; gap: 2rem; }
  .footer-links a {
    color: var(--text-secondary); text-decoration: none;
    transition: color 0.3s;
  }
  .footer-links a:hover { color: white; }
  .social-links { display: flex; gap: 1rem; }
  .social-links a {
    width: 40px; height: 40px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
  }
  .social-links a:hover {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: white; border-color: transparent;
    transform: translateY(-3px);
  }

  /* Animations */
  @keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .fade-in {
    opacity: 0; transform: translateY(30px);
    transition: all 0.8s ease;
  }
  .fade-in.visible { opacity: 1; transform: translateY(0); }

  /* Floating particles */
  .particles {
    position: absolute; inset: 0; overflow: hidden; z-index: 0;
  }
  .particle {
    position: absolute;
    width: 4px; height: 4px;
    background: var(--accent-blue);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 15s infinite linear;
  }
  @keyframes float {
    0% { transform: translateY(100vh) translateX(0); }
    100% { transform: translateY(-100px) translateX(100px); }
  }

  /* Responsive */
@media (max-width: 1024px) {
  .skills-grid { grid-template-columns: repeat(3, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
  }
  .hero-text h1 { font-size: 2.5rem; }
  .hero-stats { flex-direction: column; gap: 1rem; }
  .about-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .section-header h2 { font-size: 2rem; }
  .about-features { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .hero-text h1 { font-size: 2rem; }
  .skills-grid { grid-template-columns: 1fr; }
}