:root {
    --m: #10b981;
    --e: #3b82f6;
    --r: #ef4444;
    --n: #f59e0b;
    --dark: #0a0f1e;
    --card: #0f172a;
    --border: rgba(255,255,255,0.08);
  }
  * { margin: 0; padding: 0; box-sizing: border-box; scroll-behavior: smooth; }
  body { background: var(--dark); color: #e2e8f0; font-family: 'Space Grotesk', sans-serif; overflow-x: hidden; }

  /* Animated noise background */
  body::before {
    content: '';
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background: radial-gradient(ellipse 80% 60% at 20% 20%, rgba(16,185,129,0.07) 0%, transparent 60%),
                radial-gradient(ellipse 60% 80% at 80% 80%, rgba(59,130,246,0.07) 0%, transparent 60%);
    animation: bgPulse 8s ease-in-out infinite alternate;
  }
  @keyframes bgPulse { from { opacity: 0.6; } to { opacity: 1; } }

  /* Grid overlay */
  body::after {
    content: '';
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background-image: linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
    background-size: 60px 60px;
  }

  .rel { position: relative; z-index: 1; }

  /* Nav */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(10,15,30,0.85); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    display: flex; justify-content: space-between; align-items: center;
    animation: slideDown 0.6s ease forwards;
  }
  @keyframes slideDown { from { transform: translateY(-100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
  .logo { font-family: 'Fira Code', monospace; font-size: 1.1rem; color: var(--m); letter-spacing: -0.5px; }
  .logo span { color: #64748b; }
  .nav-links { display: flex; gap: 2rem; }
  .nav-links a { color: #94a3b8; text-decoration: none; font-size: 0.85rem; letter-spacing: 0.05em; text-transform: uppercase; transition: color 0.3s; }
  .nav-links a:hover { color: var(--m); }

  /* Hero */
  .hero { min-height: 100vh; display: flex; align-items: center; padding: 6rem 2rem 4rem; max-width: 1200px; margin: 0 auto; gap: 4rem; }
  .hero-text { flex: 1; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 0.5rem;
    background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.3);
    padding: 0.35rem 1rem; border-radius: 999px; font-size: 0.8rem; color: var(--m);
    font-family: 'Fira Code', monospace; margin-bottom: 1.5rem;
    animation: fadeUp 0.8s ease 0.2s both;
  }
  .hero-badge::before { content: '●'; animation: blink 1.5s infinite; font-size: 0.6rem; }
  @keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0.2; } }
  h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 700; line-height: 1.05; letter-spacing: -2px; animation: fadeUp 0.8s ease 0.3s both; }
  h1 .name { color: #ffffff; }
  h1 .accent { background: linear-gradient(135deg, var(--m), var(--e)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
  .hero-tagline { font-family: 'Fira Code', monospace; font-size: 1rem; color: #64748b; margin: 1rem 0 1.5rem; animation: fadeUp 0.8s ease 0.4s both; }
  .hero-tagline .t-m { color: var(--m); }
  .hero-tagline .t-e { color: var(--e); }
  .hero-tagline .t-r { color: var(--r); }
  .hero-tagline .t-n { color: var(--n); }
  .hero-desc { font-size: 1rem; color: #94a3b8; line-height: 1.8; max-width: 520px; animation: fadeUp 0.8s ease 0.5s both; }
  .hero-btns { display: flex; gap: 1rem; margin-top: 2rem; flex-wrap: wrap; animation: fadeUp 0.8s ease 0.6s both; }
  .btn-primary {
    padding: 0.75rem 1.75rem; background: var(--m); color: #000; border: none;
    border-radius: 8px; font-weight: 600; font-size: 0.9rem; cursor: pointer;
    text-decoration: none; display: inline-flex; align-items: center; gap: 0.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
  }
  .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(16,185,129,0.4); }
  .btn-outline {
    padding: 0.75rem 1.75rem; background: transparent; color: #e2e8f0;
    border: 1px solid var(--border); border-radius: 8px; font-weight: 500; font-size: 0.9rem;
    cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 0.5rem;
    transition: border-color 0.2s, color 0.2s;
  }
  .btn-outline:hover { border-color: var(--m); color: var(--m); }

  /* MERN stack visual */
  .mern-visual { flex-shrink: 0; display: flex; flex-direction: column; align-items: center; gap: 1rem; animation: fadeUp 0.8s ease 0.7s both; }
  .mern-ring { position: relative; width: 240px; height: 240px; }
  .mern-ring svg { width: 100%; height: 100%; animation: rotateSlow 20s linear infinite; }
  .mern-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; }
  .mern-center span { font-family: 'Fira Code', monospace; font-size: 0.7rem; color: #64748b; }
  .mern-center strong { font-family: 'Fira Code', monospace; font-size: 1.4rem; font-weight: 700; color: #fff; letter-spacing: 2px; }
  @keyframes rotateSlow { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

  @keyframes fadeUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }

  /* Sections */
  section { padding: 5rem 2rem; max-width: 1200px; margin: 0 auto; }
  .section-label { font-family: 'Fira Code', monospace; font-size: 0.75rem; color: var(--m); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 0.5rem; }
  .section-title { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 700; letter-spacing: -1px; margin-bottom: 3rem; color: #fff; }
  .section-title span { background: linear-gradient(135deg, var(--m), var(--e)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

  /* Divider */
  .divider { height: 1px; background: linear-gradient(90deg, transparent, var(--border), transparent); max-width: 1200px; margin: 0 auto; }

  /* Skills */
  .skills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 0.75rem; }
  .skill-tag {
    background: var(--card); border: 1px solid var(--border); border-radius: 8px;
    padding: 0.75rem 1rem; display: flex; align-items: center; gap: 0.5rem;
    font-size: 0.85rem; font-weight: 500; color: #cbd5e1;
    transition: border-color 0.3s, color 0.3s, transform 0.2s;
    cursor: default;
  }
  .skill-tag:hover { border-color: var(--m); color: var(--m); transform: translateY(-2px); }
  .skill-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }

  /* Timeline */
  .timeline { position: relative; }
  .timeline::before { content: ''; position: absolute; left: 16px; top: 0; bottom: 0; width: 1px; background: var(--border); }
  .timeline-item { position: relative; padding-left: 3.5rem; margin-bottom: 2.5rem; opacity: 0; transform: translateX(-20px); transition: opacity 0.6s ease, transform 0.6s ease; }
  .timeline-item.visible { opacity: 1; transform: translateX(0); }
  .timeline-dot { position: absolute; left: 9px; top: 6px; width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--m); background: var(--dark); }
  .timeline-dot::after { content: ''; position: absolute; inset: 3px; border-radius: 50%; background: var(--m); animation: dotPulse 2s ease-in-out infinite; }
  @keyframes dotPulse { 0%,100% { transform: scale(1); } 50% { transform: scale(0.6); } }
  .timeline-year { font-family: 'Fira Code', monospace; font-size: 0.75rem; color: var(--m); margin-bottom: 0.25rem; }
  .timeline-title { font-size: 1.1rem; font-weight: 600; color: #fff; margin-bottom: 0.25rem; }
  .timeline-sub { font-size: 0.9rem; color: #64748b; margin-bottom: 0.5rem; }
  .timeline-desc { font-size: 0.9rem; color: #94a3b8; line-height: 1.7; }

  /* Certificates */
  .cert-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.25rem; }
  .cert-card {
    background: var(--card); border: 1px solid var(--border); border-radius: 12px;
    padding: 1.5rem; position: relative; overflow: hidden;
    transition: border-color 0.3s, transform 0.3s;
    opacity: 0; transform: translateY(20px);
  }
  .cert-card.visible { opacity: 1; transform: translateY(0); }
  .cert-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, var(--m), var(--e)); }
  .cert-card:hover { border-color: rgba(16,185,129,0.4); transform: translateY(-4px); }
  .cert-icon { font-size: 2rem; margin-bottom: 0.75rem; }
  .cert-title { font-size: 1rem; font-weight: 600; color: #fff; margin-bottom: 0.25rem; }
  .cert-issuer { font-size: 0.8rem; color: var(--m); font-family: 'Fira Code', monospace; margin-bottom: 0.5rem; }
  .cert-date { font-size: 0.75rem; color: #64748b; }
  .cert-badge { position: absolute; top: 1rem; right: 1rem; background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.3); color: var(--m); font-size: 0.7rem; padding: 0.2rem 0.6rem; border-radius: 999px; font-family: 'Fira Code', monospace; }

  /* Projects */
  .project-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.5rem; }
  .project-card {
    background: var(--card); border: 1px solid var(--border); border-radius: 12px;
    padding: 1.75rem; position: relative; overflow: hidden;
    transition: border-color 0.3s, transform 0.3s;
    opacity: 0; transform: translateY(20px);
  }
  .project-card.visible { opacity: 1; transform: translateY(0); }
  .project-card:hover { border-color: rgba(59,130,246,0.4); transform: translateY(-4px); }
  .project-card::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--e), transparent); transform: scaleX(0); transition: transform 0.3s; }
  .project-card:hover::after { transform: scaleX(1); }
  .project-type { font-family: 'Fira Code', monospace; font-size: 0.7rem; color: var(--e); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 0.75rem; }
  .project-name { font-size: 1.2rem; font-weight: 700; color: #fff; margin-bottom: 0.5rem; }
  .project-desc { font-size: 0.875rem; color: #94a3b8; line-height: 1.7; margin-bottom: 1.25rem; }
  .project-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.25rem; }
  .tag { background: rgba(255,255,255,0.05); border: 1px solid var(--border); padding: 0.2rem 0.6rem; border-radius: 999px; font-size: 0.7rem; color: #94a3b8; font-family: 'Fira Code', monospace; }
  .project-links { display: flex; gap: 0.75rem; }
  .project-links a { font-size: 0.8rem; color: #64748b; text-decoration: none; display: flex; align-items: center; gap: 0.3rem; transition: color 0.2s; }
  .project-links a:hover { color: var(--e); }
  .project-links a svg { width: 14px; height: 14px; }
  .project-num { position: absolute; top: 1.5rem; right: 1.5rem; font-family: 'Fira Code', monospace; font-size: 2rem; font-weight: 700; color: rgba(255,255,255,0.04); line-height: 1; }

  /* Contact */
  .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
  .contact-info h3 { font-size: 1.5rem; font-weight: 700; color: #fff; margin-bottom: 1rem; }
  .contact-info p { color: #94a3b8; line-height: 1.8; margin-bottom: 2rem; }
  .social-links { display: flex; flex-direction: column; gap: 0.75rem; }
  .social-link {
    display: flex; align-items: center; gap: 1rem; padding: 1rem 1.25rem;
    background: var(--card); border: 1px solid var(--border); border-radius: 10px;
    text-decoration: none; color: #e2e8f0; transition: border-color 0.2s, transform 0.2s;
  }
  .social-link:hover { border-color: var(--m); transform: translateX(4px); }
  .social-icon { width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 1rem; flex-shrink: 0; }
  .social-text strong { display: block; font-size: 0.9rem; font-weight: 600; }
  .social-text span { font-size: 0.75rem; color: #64748b; font-family: 'Fira Code', monospace; }

  /* Footer */
  footer { text-align: center; padding: 2rem; border-top: 1px solid var(--border); color: #475569; font-size: 0.8rem; font-family: 'Fira Code', monospace; }
  footer span { color: var(--m); }

  /* Scroll animations observer */
  .fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
  .fade-in.visible { opacity: 1; transform: translateY(0); }

  /* Floating particles */
  .particles { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
  .particle { position: absolute; border-radius: 50%; opacity: 0.15; animation: float linear infinite; }
  @keyframes float {
    0% { transform: translateY(100vh) translateX(0); opacity: 0; }
    10% { opacity: 0.15; }
    90% { opacity: 0.15; }
    100% { transform: translateY(-100px) translateX(var(--dx)); opacity: 0; }
  }

  /* Mobile */
  @media (max-width: 768px) {
    .hero { flex-direction: column; gap: 2rem; padding-top: 6rem; }
    .mern-ring { width: 160px; height: 160px; }
    .nav-links { display: none; }
    .contact-grid { grid-template-columns: 1fr; }
  }