:root{
    --ink:#16222E;
    --ink-soft:#4A5A68;
    --paper:#FAFAF7;
    --page-bg:#EDEEEB;
    --side-bg:#EFF4F4;
    --side-text:#2B3A42;
    --side-text-dim:#6B8080;
    --accent:#0E8A8A;
    --accent-soft:#E4F3F2;
    --rule:#D9DEE1;
    --gold:#B98A2E;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--page-bg);
    font-family:'IBM Plex Sans',Arial,sans-serif;
    color:var(--ink);
  }

  /* ---------- TOP NAV ---------- */
  .topnav{
    position:sticky;top:0;z-index:50;
    background:#fff;
    border-bottom:1px solid var(--rule);
  }
  .topnav-inner{
    max-width:1000px;margin:0 auto;
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 24px;
  }
  .brand{
    text-decoration:none;
    font-family:'IBM Plex Mono',monospace;
    font-weight:600;font-size:14px;
    color:var(--ink);
    letter-spacing:.3px;
    display:flex;align-items:center;gap:8px;
    background:none;border:none;cursor:pointer;
  }
  .brand .dot{width:8px;height:8px;background:var(--accent);display:inline-block;border-radius:1px;}
  .navlinks{display:flex;gap:4px;}
  .navlinks a{
    text-decoration:none;
    font-family:'IBM Plex Sans',sans-serif;
    font-size:13px;font-weight:500;
    color:var(--ink-soft);
    background:none;border:none;cursor:pointer;
    padding:8px 14px;border-radius:5px;
    transition:color .15s,background .15s;
    white-space:nowrap;
    display:inline-block;
  }
  .navlinks a:hover{color:var(--ink);background:var(--accent-soft);}
  .navlinks a.active{color:var(--accent);background:var(--accent-soft);font-weight:600;}

  .page{max-width:1000px;margin:0 auto;padding:0 0 60px;}
  .view{display:none;}
  .view.active{display:block;}

  /* ---------- HOME ---------- */
  .home-hero{
    position:relative;
    overflow:hidden;
    background:#F3F5F3;
  }
  .home-hero .bg-layer{
    position:absolute;inset:0;
    z-index:0;
  }
  .home-hero .bg-layer svg{width:100%;height:100%;display:block;}
  .home-wrap{
    position:relative;z-index:1;
    min-height:calc(100vh - 130px);
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    text-align:center;padding:60px 24px;
  }
  .avatar{
    width:148px;height:148px;border-radius:50%;
    background:linear-gradient(145deg,#F0F5F5,#E1EBEA);
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 10px 30px rgba(14,138,138,0.18);
    margin-bottom:26px;
    overflow:hidden;
    border:4px solid #fff;
  }
  .avatar img{width:100%;height:100%;object-fit:cover;display:none;} /* swap src and set display:block to use a real photo later */
  .avatar svg{width:78%;height:78%;}
  .home-wrap h1{
    font-size:36px;margin:0 0 6px;color:var(--ink);font-weight:700;
  }
  .home-role{
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;letter-spacing:1px;text-transform:uppercase;
    color:var(--accent);margin-bottom:28px;
  }
  .tagline-box{
    max-width:560px;
    background:rgba(255,255,255,0.88);
    backdrop-filter:blur(2px);
    border:1px solid var(--rule);
    border-left:3px solid var(--accent);
    border-radius:4px;
    padding:22px 26px;
    font-size:14.5px;line-height:1.7;
    color:var(--ink-soft);
    text-align:left;
    position:relative;
  }
  .tagline-box::before{
    content:"\201C";
    font-family:Georgia,serif;
    font-size:44px;color:var(--accent-soft);
    position:absolute;top:-6px;left:14px;
  }
  .bg-caption{
    position:absolute;bottom:10px;right:16px;z-index:1;
    font-family:'IBM Plex Mono',monospace;
    font-size:9px;letter-spacing:.4px;
    color:#9AAAAA;
    opacity:.8;
  }

  /* ---------- RESUME ---------- */
  .resume-grid{
    display:grid;
    grid-template-columns:250px 1fr;
    background:var(--paper);
    box-shadow:0 8px 30px rgba(16,27,38,0.08);
    margin:32px 0;
  }
  .sidebar{
    background:var(--side-bg);
    color:var(--side-text);
    padding:36px 26px;
    border-right:1px solid var(--rule);
  }
  .sb-block{margin-bottom:26px;}
  .sb-label{
    font-family:'IBM Plex Mono',monospace;
    font-size:10.5px;letter-spacing:1.4px;text-transform:uppercase;
    color:var(--side-text-dim);
    margin-bottom:10px;border-bottom:1px solid rgba(43,58,66,0.14);
    padding-bottom:6px;
  }
  .sb-block ul{list-style:none;margin:0;padding:0;}
  .sb-block li{
    font-size:12.5px;line-height:1.6;color:var(--side-text);
    padding-left:12px;position:relative;margin-bottom:5px;
  }
  .sb-block li::before{
    content:"";position:absolute;left:0;top:7px;
    width:5px;height:1.5px;background:var(--accent);
  }
  .edu-entry{font-size:12.5px;line-height:1.55;color:var(--side-text);}
  .edu-entry .school{color:var(--side-text-dim);font-size:11.5px;}

  .main{padding:40px 40px;}
  .summary-box{
    background:var(--accent-soft);
    border:1px solid var(--rule);
    border-left:3px solid var(--accent);
    border-radius:4px;
    padding:22px 26px;
    margin:0 0 30px;
  }
  .summary-box .summary-label{
    font-family:'IBM Plex Mono',monospace;font-size:10px;letter-spacing:1.2px;text-transform:uppercase;
    color:var(--accent);font-weight:600;margin-bottom:9px;
  }
  .summary-box p{
    font-size:14px;line-height:1.75;color:var(--ink);margin:0;
    text-align:justify;text-justify:inter-word;hyphens:auto;
  }

  .metrics{
    display:grid;grid-template-columns:repeat(5,1fr);
    border:1px solid var(--rule);border-radius:3px;overflow:hidden;margin-bottom:34px;
  }
  .metric{padding:14px 10px;text-align:center;border-right:1px solid var(--rule);background:var(--accent-soft);}
  .metric:last-child{border-right:none;}
  .metric .val{font-family:'IBM Plex Mono',monospace;font-size:18px;font-weight:600;color:var(--ink);display:block;}
  .metric .unit{color:var(--accent);}
  .metric .lbl{display:block;margin-top:3px;font-size:9px;letter-spacing:.5px;text-transform:uppercase;color:var(--ink-soft);}

  h2.sec{
    font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:1.6px;text-transform:uppercase;
    color:var(--ink);margin:0 0 16px;padding-bottom:8px;border-bottom:1.5px solid var(--ink);
    display:flex;align-items:baseline;gap:8px;
  }
  h2.sec::before{content:"";width:9px;height:9px;background:var(--accent);display:inline-block;}

  .job{margin-bottom:26px;}
  .job:last-child{margin-bottom:0;}
  .job-head{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:6px 14px;margin-bottom:3px;}
  .job-title{font-size:14.5px;font-weight:700;color:var(--ink);}
  .job-company{color:var(--accent);font-weight:600;}
  .job-date{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink-soft);white-space:nowrap;}
  .job ul{margin:8px 0 0;padding-left:18px;}
  .job li{font-size:12.8px;line-height:1.62;color:var(--ink-soft);margin-bottom:5px;text-align:justify;text-justify:inter-word;hyphens:auto;}
  .job li::marker{color:var(--accent);}

  .highlights{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px;}
  .chip{
    font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink);
    background:var(--accent-soft);border:1px solid var(--rule);border-radius:20px;padding:4px 11px;
  }
  .chip b{color:var(--accent);font-weight:600;}

  .exp-section{margin-top:34px;}
  .innov-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:2px;}
  .innov-card{border:1px solid var(--rule);border-top:2.5px solid var(--accent);padding:12px 13px;background:#fff;}
  .innov-card .t{font-size:12.5px;font-weight:600;color:var(--ink);margin-bottom:3px;}
  .innov-card .d{font-size:11.3px;color:var(--ink-soft);line-height:1.5;text-align:justify;text-justify:inter-word;hyphens:auto;}

  .skills-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:2px;}
  .skill-card{border:1px solid var(--rule);border-top:2.5px solid var(--accent);padding:16px 18px;background:#fff;}
  .skill-card .t{
    font-family:'IBM Plex Mono',monospace;font-size:10.5px;letter-spacing:1.2px;text-transform:uppercase;
    color:var(--side-text-dim);margin-bottom:10px;
  }
  .skill-card ul{list-style:none;margin:0;padding:0;}
  .skill-card li{
    font-size:12.5px;line-height:1.6;color:var(--ink-soft);
    padding-left:12px;position:relative;margin-bottom:6px;
  }
  .skill-card li::before{
    content:"";position:absolute;left:0;top:7px;
    width:5px;height:1.5px;background:var(--accent);
  }

  .edu-card{
    background:#fff;border:1px solid var(--rule);border-left:3px solid var(--gold);
    border-radius:4px;padding:16px 18px;
    display:flex;gap:16px;align-items:flex-start;flex-wrap:wrap;
  }
  .edu-card .degree{font-size:13.3px;font-weight:600;color:var(--ink);line-height:1.5;}
  .edu-card .school{font-size:12px;color:var(--ink-soft);margin-top:3px;}

  .honors-row{margin-top:34px;display:flex;flex-wrap:wrap;gap:8px 10px;}
  .honor{font-size:11.5px;color:var(--ink-soft);padding:6px 12px;border:1px solid var(--rule);border-radius:3px;background:#fff;}
  .honor::before{content:"\2605  ";color:var(--gold);}

  /* ---------- PUBLICATIONS / PATENTS shared ---------- */
  .doc-wrap{padding:48px 24px;max-width:820px;margin:0 auto;}
  .doc-wrap h2.sec{justify-content:flex-start;}
  .doc-sub{color:var(--ink-soft);font-size:13px;margin:-8px 0 26px;}

  .stat-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:30px;}
  .stat-card{
    flex:1;min-width:150px;
    background:#fff;border:1px solid var(--rule);border-top:2.5px solid var(--accent);
    border-radius:4px;padding:16px 18px;
  }
  .stat-card .val{font-family:'IBM Plex Mono',monospace;font-size:22px;font-weight:600;color:var(--ink);}
  .stat-card .lbl{font-size:10.5px;letter-spacing:.5px;text-transform:uppercase;color:var(--ink-soft);margin-top:3px;}

  .chart-card{
    background:#fff;border:1px solid var(--rule);border-radius:4px;
    padding:18px;margin-bottom:36px;text-align:center;
  }
  .chart-card img{max-width:100%;height:auto;display:block;margin:0 auto;}
  .chart-card .cap{font-family:'IBM Plex Mono',monospace;font-size:10px;letter-spacing:.5px;text-transform:uppercase;color:var(--side-text-dim);margin-top:10px;}
  .scholar-link{
    display:inline-flex;align-items:center;gap:6px;
    margin-top:14px;
    font-family:'IBM Plex Mono',monospace;font-size:11px;font-weight:600;
    color:var(--accent);
    border:1px solid var(--accent);
    border-radius:20px;
    padding:6px 16px;
    text-decoration:none;
    transition:background .15s,color .15s;
  }
  .scholar-link:hover{background:var(--accent);color:#fff;}
  .scholar-link svg{width:11px;height:11px;flex-shrink:0;}

  .pub-list{list-style:none;margin:0;padding:0;counter-reset:pub;display:flex;flex-direction:column;gap:12px;}
  .pub-card{
    counter-increment:pub;
    display:flex;gap:14px;align-items:flex-start;
    background:#fff;border:1px solid var(--rule);border-left:3px solid var(--accent);
    border-radius:4px;padding:15px 18px;
  }
  .pub-card::before{
    content:counter(pub);
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;color:var(--accent);
    background:var(--accent-soft);
    min-width:26px;height:26px;border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    flex-shrink:0;margin-top:1px;
  }
  .pub-body{flex:1;min-width:0;}
  .pub-title{font-size:13.5px;font-weight:600;color:var(--ink);line-height:1.5;margin-bottom:7px;}
  .pub-fields{display:flex;flex-wrap:wrap;gap:6px 8px;margin-bottom:6px;}
  .pub-field{
    display:inline-flex;align-items:baseline;gap:5px;
    font-size:11px;
    background:var(--accent-soft);
    border-radius:3px;
    padding:3px 9px;
  }
  .pub-field .k{
    font-family:'IBM Plex Mono',monospace;
    font-size:9px;letter-spacing:.5px;text-transform:uppercase;
    color:var(--accent);
  }
  .pub-field .v{color:var(--ink);}
  .pub-field.venue{background:var(--side-bg);}
  .pub-field.venue .k{color:var(--side-text-dim);}
  .pub-authors{font-size:11.8px;color:var(--ink-soft);line-height:1.5;}
  .pub-authors .k{
    font-family:'IBM Plex Mono',monospace;
    font-size:9px;letter-spacing:.5px;text-transform:uppercase;
    color:var(--side-text-dim);margin-right:6px;
  }

  .patent-list{list-style:none;margin:0;padding:0;}
  .patent-card{
    background:#fff;border:1px solid var(--rule);border-left:3px solid var(--gold);
    border-radius:4px;padding:16px 18px;margin-bottom:12px;
    display:flex;gap:16px;align-items:flex-start;flex-wrap:wrap;
  }
  .patent-num{
    font-family:'IBM Plex Mono',monospace;font-size:11.5px;font-weight:600;
    color:#fff;background:var(--ink);padding:4px 10px;border-radius:3px;white-space:nowrap;
  }
  .patent-title{font-size:13.3px;color:var(--ink);line-height:1.55;flex:1;min-width:220px;}

  /* ---------- CONTACT ---------- */
  .contact-wrap{padding:60px 24px;max-width:640px;margin:0 auto;}
  .contact-wrap h2.sec{justify-content:center;border-bottom:none;text-align:center;}
  .contact-wrap h2.sec::before{display:none;}
  .contact-sub{text-align:center;color:var(--ink-soft);font-size:13.5px;margin:-6px 0 30px;}
  .contact-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;}
  .ccard{
    background:#fff;border:1px solid var(--rule);border-top:2.5px solid var(--accent);
    border-radius:4px;padding:22px 16px;text-align:center;
  }
  .ccard .lbl{
    font-family:'IBM Plex Mono',monospace;font-size:10px;letter-spacing:1px;text-transform:uppercase;
    color:var(--side-text-dim);margin-bottom:8px;
  }
  .ccard .v{font-size:13.5px;color:var(--ink);font-weight:600;word-break:break-word;}
  .ccard a{color:var(--ink);text-decoration:none;}
  .ccard a:hover{color:var(--accent);}

  @media (max-width:760px){
    .resume-grid{grid-template-columns:1fr;}
    .metrics{grid-template-columns:repeat(2,1fr);}
    .metric:nth-child(2n){border-right:none;}
    .innov-grid{grid-template-columns:1fr;}
    .skills-grid{grid-template-columns:1fr;}
    .contact-cards{grid-template-columns:1fr;}
    .navlinks{gap:0;}
    .navlinks a{padding:8px 8px;font-size:11.5px;}
  }