:root{
    --bg: #0B1120;
    --surface: #131B2E;
    --surface-2: #0F1626;
    --border: #22304A;
    --text: #E6EDF7;
    --muted: #8B95A7;
    --accent: #4FD1C5;
    --accent-soft: rgba(79,209,197,0.12);
    --amber: #F2B84B;
    --maxw: 1040px;
  }
  *{ box-sizing: border-box; }
  html{ scroll-behavior: smooth; }
  body{
    margin:0;
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }
  h1,h2,h3{ font-family:'Space Grotesk', sans-serif; margin:0; }
  a{ color: inherit; text-decoration:none; }
  .mono{ font-family:'JetBrains Mono', monospace; }
  .wrap{ max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

  /* NAV */
  nav{
    position: sticky; top:0; z-index: 50;
    background: rgba(11,17,32,0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
  }
  .navbar{
    max-width: var(--maxw); margin:0 auto; padding: 18px 28px;
    display:flex; align-items:center; justify-content:space-between;
  }
  .brand{ font-weight:700; font-size:1.05rem; letter-spacing:-0.02em; }
  .brand .dot{ color: var(--accent); }
  .navlinks{ display:flex; gap:30px; font-size:0.92rem; color: var(--muted); }
  .navlinks a{ transition: color .2s; }
  .navlinks a:hover{ color: var(--text); }
  .navlinks a.contact-link{
    color: var(--accent); border:1px solid var(--accent); padding:6px 14px; border-radius:6px;
  }
  .navlinks a.contact-link:hover{ background: var(--accent-soft); }
  .navtoggle{ display:none; background:none; border:none; color:var(--text); font-size:1.4rem; cursor:pointer; }

  /* HERO */
  .hero{
    position: relative;
    padding: 96px 0 80px;
    overflow: hidden;
  }
  .hero-grid{
    display:grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items:center;
  }
  .eyebrow{
    font-family:'JetBrains Mono', monospace; color: var(--accent); font-size:0.82rem;
    letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 18px; display:flex; align-items:center; gap:8px;
  }
  .eyebrow::before{ content:''; width:8px; height:8px; border-radius:50%; background: var(--accent); display:inline-block; box-shadow: 0 0 0 4px var(--accent-soft); }
  .hero h1{
    font-size: clamp(2.4rem, 5vw, 3.4rem);
    line-height: 1.08; font-weight: 700; letter-spacing:-0.02em;
  }
  .hero h1 .accent{ color: var(--accent); }
  .hero p.lede{
    margin-top: 22px; color: var(--muted); font-size: 1.08rem; max-width: 520px;
  }
  .hero-ctas{ margin-top: 34px; display:flex; gap:14px; flex-wrap:wrap; }
  .btn{
    display:inline-flex; align-items:center; gap:8px;
    padding: 12px 22px; border-radius:8px; font-weight:600; font-size:0.95rem;
    transition: all .2s;
  }
  .btn-primary{ background: var(--accent); color:#062824; }
  .btn-primary:hover{ transform: translateY(-1px); box-shadow: 0 8px 20px rgba(79,209,197,0.25); }
  .btn-ghost{ border:1px solid var(--border); color: var(--text); }
  .btn-ghost:hover{ border-color: var(--accent); color: var(--accent); }

  .hero-visual{ position:relative; }
  .plot-caption{
    font-family:'JetBrains Mono', monospace; font-size: 0.72rem; color: var(--muted);
    text-align:center; margin-top: 10px; letter-spacing: 0.03em;
  }

  /* SECTION HEADERS */
  .section{ padding: 72px 0; border-top:1px solid var(--border); }
  .section-head{ display:flex; align-items:baseline; justify-content:space-between; margin-bottom: 40px; gap: 20px; flex-wrap:wrap; }
  .section-head h2{
    font-size: 1.7rem; display:flex; align-items:baseline; gap:10px;
  }
  .section-head h2 .slash{ color: var(--accent); font-weight:400; }
  .section-head .sub{ color: var(--muted); font-size:0.95rem; max-width: 420px; }

  /* ABOUT */
  .about-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items:start; }
  .about-grid p{ color: var(--muted); margin: 0 0 16px; }
  .about-grid strong{ color: var(--text); }
  .stack-list{ display:grid; grid-template-columns: 1fr 1fr; gap: 10px 24px; margin-top: 20px; }
  .stack-list div{ font-family:'JetBrains Mono', monospace; font-size:0.88rem; color: var(--text); display:flex; align-items:center; gap:8px; }
  .stack-list div::before{ content:'▸'; color: var(--accent); }
  .facts{ background: var(--surface); border:1px solid var(--border); border-radius:12px; padding: 26px; }
  .facts dl{ margin:0; display:grid; grid-template-columns: 100px 1fr; gap: 14px 16px; font-size:0.92rem; }
  .facts dt{ color: var(--muted); font-family:'JetBrains Mono', monospace; font-size:0.78rem; text-transform:uppercase; letter-spacing:0.04em; }
  .facts dd{ margin:0; }

  /* TIMELINE (Experience/Education) */
  .timeline{ position:relative; padding-left: 28px; border-left: 1px solid var(--border); }
  .tl-item{ position:relative; padding-bottom: 36px; }
  .tl-item:last-child{ padding-bottom:0; }
  .tl-item::before{
    content:''; position:absolute; left:-33px; top:4px; width:9px; height:9px; border-radius:50%;
    background: var(--bg); border:2px solid var(--accent);
  }
  .tl-date{ font-family:'JetBrains Mono', monospace; font-size:0.78rem; color: var(--accent); margin-bottom:6px; display:block; }
  .tl-item h3{ font-size:1.1rem; margin-bottom:6px; }
  .tl-item h3 span{ color: var(--muted); font-weight:400; }
  .tl-item p{ color: var(--muted); margin:0; font-size:0.94rem; max-width: 640px; }

  /* PROJECTS */
  .proj-grid{ display:grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .card{
    position: relative;
    display:block;
    background: var(--surface); border:1px solid var(--border); border-radius:12px;
    padding: 26px; overflow: hidden;
    transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
    opacity:0; transform: translateY(18px);
    animation: cardIn .6s ease forwards;
    animation-play-state: paused;
  }
  .reveal.in .card{ animation-play-state: running; }
  .proj-grid .card:nth-child(1){ animation-delay: .05s; }
  .proj-grid .card:nth-child(2){ animation-delay: .15s; }
  .proj-grid .card:nth-child(3){ animation-delay: .25s; }
  .proj-grid .card:nth-child(4){ animation-delay: .35s; }
  .proj-grid .card:nth-child(5){ animation-delay: .45s; }
  @keyframes cardIn{
    to{ opacity:1; transform: none; }
  }
  .card::before{
    content:'';
    position:absolute; inset:0;
    background: radial-gradient(500px circle at var(--mx,50%) var(--my,0%), var(--accent-soft), transparent 60%);
    opacity:0; transition: opacity .3s ease; pointer-events:none;
  }
  .card:hover{ border-color: var(--accent); transform: translateY(-4px); box-shadow: 0 14px 30px rgba(0,0,0,0.35); }
  .card:hover::before{ opacity:1; }
  .card-top{ display:flex; justify-content:space-between; align-items:flex-start; margin-bottom:14px; gap:10px; }
  .card h3{ font-size:1.15rem; }
  .card-arrow{
    flex-shrink:0; color: var(--muted); font-size:1.1rem; line-height:1;
    transform: translate(-4px, 4px) rotate(0deg); opacity:0.5;
    transition: transform .25s ease, opacity .25s ease, color .25s ease;
  }
  .card:hover .card-arrow{ transform: translate(0,0) rotate(45deg); opacity:1; color: var(--accent); }
  .card p.desc{ color: var(--muted); font-size:0.94rem; margin: 0 0 16px; position:relative; }
  .tags{ display:flex; flex-wrap:wrap; gap:8px; position:relative; }
  .tag{
    font-family:'JetBrains Mono', monospace; font-size:0.72rem; color: var(--accent);
    background: var(--accent-soft); padding: 4px 10px; border-radius:5px; letter-spacing:0.02em;
  }
  .metric{ display:inline-block; margin-top:10px; margin-bottom: 6px; font-family:'JetBrains Mono', monospace; font-size:0.78rem; color: var(--amber); position:relative; }
  @media (prefers-reduced-motion: reduce){
    .card{ animation: none; opacity:1; transform:none; }
  }

  /* SKILLS */
  .skills-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .skill-cat{ background: var(--surface-2); border:1px solid var(--border); border-radius:10px; padding:20px; }
  .skill-cat h4{ font-family:'JetBrains Mono', monospace; font-size:0.8rem; color: var(--accent); text-transform:uppercase; letter-spacing:0.05em; margin-bottom:12px; }
  .skill-cat ul{ list-style:none; margin:0; padding:0; color: var(--muted); font-size:0.9rem; }
  .skill-cat li{ padding: 4px 0; }

  /* CONTACT (closing section) */
  .contact-section{ text-align:center; padding: 96px 0 80px; }
  .contact-section .eyebrow{ justify-content:center; }
  .contact-section h2{ font-size: clamp(2rem, 4vw, 2.8rem); margin: 18px auto 16px; max-width: 640px; }
  .contact-section p{ color: var(--muted); max-width: 480px; margin: 0 auto 34px; }
  .contact-ctas{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }
  .contact-channels{ margin-top: 48px; display:flex; gap: 30px; justify-content:center; flex-wrap:wrap; }
  .channel{ display:flex; flex-direction:column; align-items:center; gap:8px; color: var(--muted); font-size:0.85rem; }
  .channel .icon{
    width:44px; height:44px; border-radius:50%; border:1px solid var(--border);
    display:flex; align-items:center; justify-content:center; color: var(--text); transition: all .2s;
  }
  .channel:hover .icon{ border-color: var(--accent); color: var(--accent); }

  footer{ border-top:1px solid var(--border); padding: 28px 0; text-align:center; color: var(--muted); font-size:0.82rem; }

  /* reveal animation */
  .reveal{ opacity:0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
  .reveal.in{ opacity:1; transform: none; }

  @media (max-width: 860px){
    .hero-grid{ grid-template-columns: 1fr; }
    .hero-visual{ order:-1; max-width: 280px; margin: 0 auto; }
    .about-grid{ grid-template-columns: 1fr; }
    .proj-grid{ grid-template-columns: 1fr; }
    .skills-grid{ grid-template-columns: 1fr 1fr; }
    .navlinks{
      position:fixed; top:64px; left:0; right:0; background: var(--bg); border-bottom:1px solid var(--border);
      flex-direction:column; padding: 20px 28px; gap:18px; display:none;
    }
    .navlinks.open{ display:flex; }
    .navtoggle{ display:block; }
  }
  @media (max-width: 520px){
    .skills-grid{ grid-template-columns: 1fr; }
    .stack-list{ grid-template-columns: 1fr; }
  }
  @media (prefers-reduced-motion: reduce){
    html{ scroll-behavior:auto; }
    .reveal{ opacity:1; transform:none; transition:none; }
  }