/* Palette matches the résumé: navy accent #2B4C6F on neutral greys. */
:root{
  --bg:#f7f8fa; --bg-alt:#eef1f5; --surface:#ffffff; --text:#14202e; --muted:#5b6472; --line:#dde2e8;
  --accent:#2b4c6f; --accent-strong:#1d3650; --accent-ink:#ffffff; --accent-soft:#e6edf5;
  --tile:#ffffff;
  --shadow:0 1px 2px rgba(20,32,46,.05),0 6px 20px rgba(20,32,46,.06);
  --r:16px; --max:1140px;
  --font:Inter,Arial,Helvetica,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0d131a; --bg-alt:#111a23; --surface:#16202b; --text:#e8edf3; --muted:#9aa7b6; --line:#24313f;
    --accent:#8fb4dc; --accent-strong:#b4cfeb; --accent-ink:#0d131a; --accent-soft:#1c2b3b;
    --tile:#f4f6f8; --shadow:none;
  }
}
:root[data-theme="dark"]{
  --bg:#0d131a; --bg-alt:#111a23; --surface:#16202b; --text:#e8edf3; --muted:#9aa7b6; --line:#24313f;
  --accent:#8fb4dc; --accent-strong:#b4cfeb; --accent-ink:#0d131a; --accent-soft:#1c2b3b;
  --tile:#f4f6f8; --shadow:none;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:var(--surface);padding:8px 12px;z-index:10}
.muted{color:var(--muted)}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:700}
.mark{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;background:var(--accent);color:var(--accent-ink);font-size:13px;letter-spacing:.04em}
.brand-name{font-size:15px;letter-spacing:-.01em}
nav{margin-left:auto;display:flex;align-items:center;gap:22px}
nav a{text-decoration:none;color:var(--muted);font-size:14px;font-weight:500}
nav a:hover{color:var(--text)}
nav .nav-cta{color:var(--accent);font-weight:600}
.icon-btn{display:grid;place-items:center;border:1px solid var(--line);background:var(--surface);color:var(--text);width:38px;height:38px;border-radius:10px;cursor:pointer}

/* ---------- icons (mask so they follow currentColor) ---------- */
.ico{display:inline-block;width:16px;height:16px;background:currentColor;-webkit-mask:var(--m) center/contain no-repeat;mask:var(--m) center/contain no-repeat}
.ico-linkedin{--m:url(assets/logos/si_linkedin.svg)}
.ico-github{--m:url(assets/logos/si_github.svg)}
.ico-coursera{--m:url(assets/logos/si_coursera.svg)}

/* ---------- hero ---------- */
.hero{padding:80px 0 56px;background:radial-gradient(1200px 500px at 85% -10%,var(--accent-soft),transparent 60%)}
.hero-in{display:grid;grid-template-columns:1.45fr 1fr;gap:56px;align-items:center}
.eyebrow{display:inline-block;margin:0 0 18px;padding:6px 12px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-size:13px;font-weight:600;letter-spacing:.02em}
.eyebrow i{font-style:normal;opacity:.6;margin:0 4px}
h1{font-size:clamp(38px,5.4vw,60px);line-height:1.05;letter-spacing:-.035em;margin:0 0 22px;font-weight:800}
.lead{font-size:18px;line-height:1.7;color:var(--muted);max-width:60ch;margin:0 0 22px}
.lead strong{color:var(--text);font-weight:600}
.meta{list-style:none;display:flex;flex-wrap:wrap;gap:8px 22px;margin:0 0 30px;padding:0;font-size:14px;color:var(--muted)}
.meta li{display:flex;align-items:center;gap:6px}
.meta svg{width:16px;height:16px;color:var(--accent)}
.cta{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:12px;border:1px solid var(--line);background:var(--surface);text-decoration:none;font-weight:600;font-size:15px;transition:transform .15s,border-color .15s,background .15s}
.btn:hover{border-color:var(--accent);transform:translateY(-1px)}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn.primary:hover{background:var(--accent-strong)}
.btn.ghost{background:transparent;border-color:transparent;color:var(--accent);padding-left:8px}
.hero-side{display:flex;flex-direction:column;align-items:center;gap:20px}
.portrait img{width:min(340px,72vw);height:auto;aspect-ratio:1;border-radius:28px;object-fit:cover;box-shadow:0 24px 60px rgba(20,32,46,.18);border:6px solid var(--surface)}
.badge-row{display:flex;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:10px 16px;box-shadow:var(--shadow)}
.badge-row img{width:64px;height:64px;transition:transform .15s}
.badge-row a:hover img{transform:scale(1.08)}

/* ---------- logos ---------- */
.logos{padding:36px 0 32px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface)}
.logos-h{margin:0 0 22px;text-align:center;font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.logo-wall{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.logo-wall li{display:grid;place-items:center;height:76px;padding:12px 18px;border-radius:12px;background:var(--tile);border:1px solid var(--line)}
.logo-wall img{max-height:40px;max-width:100%;object-fit:contain}
.logo-wall li{transition:transform .15s,box-shadow .15s}
.logo-wall li:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.fine{margin:16px 0 0;text-align:center;font-size:12px;color:var(--muted)}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:48px;margin-bottom:8px;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);box-shadow:var(--shadow);padding:0}
.stats div{padding:22px 20px;border-right:1px solid var(--line)}
.stats div:last-child{border-right:0}
.stats b{display:block;font-size:30px;font-weight:800;letter-spacing:-.02em;color:var(--accent)}
.stats span{display:block;font-size:13px;line-height:1.45;color:var(--muted);margin-top:4px}

/* ---------- sections ---------- */
.section{padding:88px 0}
.section.alt{background:var(--bg-alt)}
.sec-head{margin-bottom:36px;max-width:720px}
.sec-num{margin:0 0 6px;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--accent)}
h2{font-size:clamp(28px,3.4vw,36px);letter-spacing:-.025em;line-height:1.15;margin:0 0 10px;font-weight:800}
.sub{color:var(--muted);margin:0;font-size:17px}
h3{margin:0 0 8px;font-size:19px;letter-spacing:-.01em;font-weight:700}
h4{margin:0;font-size:17px;font-weight:700;letter-spacing:-.01em}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--shadow)}
.card p{margin:0 0 16px;color:var(--muted);font-size:15px}
.card p b{color:var(--text);font-weight:600}
.tags{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:0}
.tags li{font-size:12.5px;font-weight:600;padding:4px 10px;border-radius:8px;background:var(--accent-soft);color:var(--accent)}

/* expertise */
.skill{display:flex;flex-direction:column}
.skill p{flex:1}
.skill-ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--accent);color:var(--accent-ink);margin-bottom:18px}
.skill-ico svg{width:22px;height:22px}

/* experience */
.company{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:32px;box-shadow:var(--shadow)}
.company-head{display:flex;align-items:center;gap:18px;padding-bottom:22px;border-bottom:1px solid var(--line)}
.company-head h3{font-size:22px;margin:0}
.company-head p{margin:2px 0 0}
.logo-tile{flex:none;display:grid;place-items:center;width:72px;height:72px;border-radius:14px;background:var(--tile);border:1px solid var(--line);padding:10px}
.logo-tile img{max-width:100%;max-height:100%;object-fit:contain}
.logo-tile.sm{width:100%;height:64px;margin-bottom:16px;padding:10px 16px}
.logo-tile.sm img{height:40px;width:auto;max-width:100%}
.edu .logo-tile{width:220px;height:84px;padding:12px 16px}
.edu .logo-tile img{max-height:56px;width:auto}
.text-tile{font-weight:800;font-size:14px;line-height:1.15;text-align:center;color:#2b4c6f;letter-spacing:-.01em}
.role{padding-top:24px}
.role+.role{margin-top:4px;border-top:1px dashed var(--line)}
.role-head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:12px}
.lvl{display:inline-block;margin-left:8px;padding:2px 8px;border-radius:6px;font-size:12px;font-weight:700;background:var(--accent-soft);color:var(--accent);vertical-align:2px}
.date{flex:none;font-size:14px;font-weight:600;color:var(--muted)}
.bullets{margin:0;padding:0;list-style:none;display:grid;gap:10px}
.bullets li{position:relative;padding-left:20px;color:var(--muted);font-size:15.5px}
.bullets li::before{content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;border-radius:2px;background:var(--accent)}
.bullets b{color:var(--text);font-weight:600}
.earlier-h{margin:44px 0 18px;font-size:15px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.earlier h4{margin-bottom:2px}
.earlier .muted{font-size:13.5px;margin-bottom:12px}

/* hands-on */
.feature{display:flex;flex-direction:column}
.feature p{flex:1}
.kicker{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}
.more{margin-top:16px;font-weight:600;font-size:14px;color:var(--accent);text-decoration:none}
.more:hover{text-decoration:underline}
.links{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:16px}
.links .more{margin-top:0}

/* certifications */
.cert{display:flex;flex-direction:column;align-items:center;text-align:center;text-decoration:none;transition:transform .15s,border-color .15s}
.cert:hover{transform:translateY(-3px);border-color:var(--accent)}
.cert img,.cert-coursera{width:112px;height:112px;margin-bottom:16px}
.cert-coursera{display:grid;place-items:center;border-radius:50%;background:#0056d2;color:#fff}
.cert-coursera .ico{width:52px;height:52px}
.cert h3{font-size:16px;line-height:1.35}
.cert p{margin:0 0 14px}
.verify{margin-top:auto;font-size:13px;font-weight:600;color:var(--accent)}

/* education */
.edu{display:flex;flex-direction:column;gap:18px}
.edu h3{margin-bottom:2px}
.edu .muted{font-size:14px;margin:0 0 14px}
.degrees{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.degrees li{display:flex;justify-content:space-between;gap:12px;padding:10px 14px;border-radius:10px;background:var(--bg-alt);font-size:15px;font-weight:600}
.degrees em{font-style:normal;font-weight:600;color:var(--accent);white-space:nowrap}

/* contact */
.contact{background:linear-gradient(135deg,var(--accent) 0%,var(--accent-strong) 100%);color:var(--accent-ink)}
.contact-in{text-align:center}
.contact .sub{color:inherit;opacity:.85;margin-bottom:28px}
.contact .cta{justify-content:center}
.contact .btn{background:transparent;color:inherit;border-color:color-mix(in srgb,currentColor 40%,transparent)}
.contact .btn.primary{background:var(--accent-ink);color:var(--accent);border-color:var(--accent-ink)}

footer{padding:26px 0;color:var(--muted);font-size:13px;border-top:1px solid var(--line)}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  nav{gap:16px}
  .brand-name{display:none}
  .grid4{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(3,1fr)}
  .stats div:nth-child(3){border-right:0}
  .stats div:nth-child(-n+3){border-bottom:1px solid var(--line)}
}
@media (max-width:860px){
  .hero{padding-top:48px}
  .hero-in{grid-template-columns:1fr;gap:36px}
  .hero-side{order:-1}
  .logo-wall{grid-template-columns:repeat(3,1fr)}
  .grid3{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  nav{display:none}
  .icon-btn{margin-left:auto}
  .brand-name{display:inline}
  .wrap{padding:0 16px}
  .section{padding:64px 0}
  .grid2,.grid3,.grid4{grid-template-columns:1fr}
  .logo-wall{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:1fr 1fr}
  .stats div{border-right:0;border-bottom:1px solid var(--line)}
  .stats div:nth-child(odd){border-right:1px solid var(--line)}
  .stats div:last-child{grid-column:1/-1;border-right:0;border-bottom:0}
  .company{padding:22px}
  .role-head{flex-direction:column;gap:4px}
  .edu{flex-direction:column}
  .degrees li{flex-direction:column;gap:2px}
  .portrait img{width:min(260px,70vw)}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.nav,.cta,#theme,.contact{display:none}.section{padding:24px 0}}