/* ============================================================
   David Schut — portfolio / CV
   Self-contained · no external requests · fonts bundled locally
   ============================================================ */

/* ---- Fonts (self-hosted, OFL) ---- */
@font-face {
  font-family: "Fraunces";
  src: url("fonts/Fraunces.woff2") format("woff2");
  font-weight: 100 900; font-display: swap; font-style: normal;
}
@font-face {
  font-family: "Plex Mono";
  src: url("fonts/IBMPlexMono-Regular.woff2") format("woff2");
  font-weight: 400; font-display: swap;
}
@font-face {
  font-family: "Plex Mono";
  src: url("fonts/IBMPlexMono-Medium.woff2") format("woff2");
  font-weight: 500; font-display: swap;
}

/* ---- Tokens ---- */
:root {
  --paper:#f4f0e7; --paper-2:#efe9dc; --ink:#1c1a13; --ink-soft:#46422f;
  --muted:#837c63; --line:#d8d1be; --line-soft:#e4ddca;
  --pine:#2f5d47; --pine-deep:#244838; --rust:#9a4f2b; --gold:#b07d2b;
  --serif:"Fraunces",Georgia,"Times New Roman",serif;
  --mono:"Plex Mono",ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Helvetica,Arial,sans-serif;
  --maxw:980px;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:5rem;}
body{
  margin:0; background-color:var(--paper);
  background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:32px 32px; background-position:center top;
  color:var(--ink); font-family:var(--sans); font-size:17px; line-height:1.6;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
::selection{background:var(--pine);color:var(--paper);}
a{color:inherit;}

/* ---- Language visibility ---- */
[data-en]{}            /* text swapped by JS */

/* ---- Nav ---- */
.nav{
  position:sticky; top:0; z-index:50;
  background:rgba(244,240,231,0.82);
  backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  max-width:var(--maxw); margin:0 auto;
  padding:0.7rem clamp(1.2rem,5vw,3rem);
  display:flex; align-items:center; justify-content:space-between; gap:1rem;
}
.nav-name{font-family:var(--serif);font-weight:600;font-size:1.1rem;letter-spacing:-0.01em;text-decoration:none;}
.nav-name .dot{color:var(--pine);}
.nav-links{display:flex;gap:1.1rem;align-items:center;}
.nav-links a{
  font-family:var(--mono); font-size:0.76rem; text-decoration:none;
  color:var(--ink-soft); letter-spacing:0.03em; padding:0.2rem 0;
  border-bottom:1.5px solid transparent; transition:color .15s,border-color .15s;
}
.nav-links a:hover,.nav-links a.active{color:var(--pine);border-color:var(--pine);}
.nav-right{display:flex;align-items:center;gap:0.9rem;}

/* lang toggle */
.lang-toggle{display:inline-flex;border:1px solid var(--line);border-radius:3px;overflow:hidden;background:rgba(255,255,255,0.5);}
.lang-toggle button{
  font-family:var(--mono);font-size:0.72rem;font-weight:500;letter-spacing:0.05em;
  border:0;background:transparent;color:var(--muted);padding:0.3rem 0.6rem;cursor:pointer;
  transition:background .15s,color .15s;
}
.lang-toggle button.active{background:var(--pine);color:var(--paper);}

/* ---- Layout ---- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:clamp(2rem,4vw,3.5rem) clamp(1.2rem,5vw,3rem) 4rem;}
section{margin-top:clamp(3rem,6vw,5rem);scroll-margin-top:5rem;}

/* ---- Reveal on scroll (JS-enhanced, no-JS shows all) ---- */
.js [data-reveal]{opacity:0;transform:translateY(16px);}
.js [data-reveal].in{opacity:1;transform:none;transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);}
@media (prefers-reduced-motion:reduce){
  .js [data-reveal]{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* ---- Hero ---- */
.masthead{border-bottom:1.5px solid var(--ink);padding-bottom:2rem;}
.eyebrow{font-family:var(--mono);font-size:0.74rem;letter-spacing:0.22em;text-transform:uppercase;color:var(--pine);margin:0 0 1.1rem;display:flex;align-items:center;gap:0.6rem;}
.eyebrow::before{content:"";width:26px;height:1.5px;background:var(--pine);display:inline-block;}
.name{font-family:var(--serif);font-weight:600;font-optical-sizing:auto;font-size:clamp(3rem,11vw,5.8rem);line-height:0.92;letter-spacing:-0.02em;margin:0;color:var(--ink);}
.role{font-family:var(--mono);font-size:clamp(0.9rem,2.4vw,1.05rem);font-weight:500;letter-spacing:0.04em;color:var(--ink-soft);margin:1.1rem 0 0;}
.summary{max-width:62ch;font-size:1.06rem;color:var(--ink-soft);margin:1.4rem 0 0;}

/* hero badges */
.badges{display:flex;flex-wrap:wrap;gap:0.5rem;margin:1.5rem 0 0;}
.badge{
  display:inline-flex;align-items:center;gap:0.5rem;
  font-family:var(--mono);font-size:0.74rem;letter-spacing:0.02em;
  border:1px solid var(--line);border-radius:999px;padding:0.35rem 0.8rem;
  background:rgba(255,255,255,0.5);color:var(--ink-soft);
}
.badge .ic{width:7px;height:7px;border-radius:50%;background:var(--pine);}
.badge.gold .ic{background:var(--gold);}
.badge.rust .ic{background:var(--rust);}

/* contact */
.contact{list-style:none;margin:1.7rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:0.5rem 0.55rem;font-family:var(--mono);font-size:0.8rem;}
.contact a,.contact span{display:inline-flex;align-items:center;gap:0.45rem;text-decoration:none;color:var(--ink);border:1px solid var(--line);background:rgba(255,255,255,0.45);padding:0.42rem 0.7rem;border-radius:2px;transition:border-color .18s,color .18s,background .18s;}
.contact a:hover{border-color:var(--pine);color:var(--pine);background:rgba(47,93,71,0.06);}
.contact .k{color:var(--muted);}

/* ---- Section headings ---- */
.sec-head{display:flex;align-items:baseline;gap:0.9rem;margin:0 0 1.8rem;border-bottom:1px solid var(--line);padding-bottom:0.7rem;}
.sec-num{font-family:var(--mono);font-size:0.78rem;color:var(--pine);font-weight:500;}
.sec-title{font-family:var(--serif);font-weight:600;font-size:clamp(1.5rem,4vw,2rem);letter-spacing:-0.01em;margin:0;line-height:1;}
.sec-intro{max-width:62ch;color:var(--ink-soft);margin:-0.6rem 0 1.8rem;}

/* ---- Entries (experience / education) ---- */
.entry{display:grid;grid-template-columns:9.5rem 1fr;gap:0.4rem 1.6rem;padding:1.5rem 0;border-bottom:1px solid var(--line-soft);}
.entry:last-child{border-bottom:none;}
.entry .when{font-family:var(--mono);font-size:0.78rem;color:var(--muted);letter-spacing:0.01em;padding-top:0.32rem;}
.entry .body{min-width:0;}
.entry .title{font-family:var(--serif);font-weight:600;font-size:1.28rem;line-height:1.2;margin:0;}
.entry .org{font-weight:600;color:var(--pine-deep);}
.entry .meta{font-family:var(--mono);font-size:0.74rem;color:var(--muted);margin:0.3rem 0 0;letter-spacing:0.02em;}
.entry p.lead{margin:0.7rem 0 0;color:var(--ink-soft);}
.entry ul{margin:0.7rem 0 0;padding:0;list-style:none;}
.entry ul li{position:relative;padding-left:1.25rem;margin:0.36rem 0;color:var(--ink-soft);font-size:0.97rem;}
.entry ul li::before{content:"\203A";position:absolute;left:0;color:var(--pine);font-family:var(--mono);}

/* ---- Skills + tooltips ---- */
.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:2.2rem;}
.skill-col h3{font-family:var(--mono);font-size:0.76rem;text-transform:uppercase;letter-spacing:0.16em;color:var(--ink);margin:0 0 1rem;font-weight:500;}
.tags{display:flex;flex-wrap:wrap;gap:0.45rem;list-style:none;margin:0;padding:0;}
.tags li{margin:0;}
.skill{
  font-family:var(--mono);font-size:0.78rem;padding:0.32rem 0.6rem;
  border:1px solid var(--line);border-radius:2px;background:rgba(255,255,255,0.5);
  color:var(--ink-soft);cursor:help;transition:transform .15s,border-color .15s,color .15s;
  font-weight:400;line-height:1.2;
}
.skill:not(.has-tip){cursor:default;}
.skill[data-tip]{position:relative;}
.skill.has-tip::after{content:"";display:inline-block;width:4px;height:4px;border-radius:50%;background:var(--pine);margin-left:0.4rem;vertical-align:middle;opacity:0.6;}
.skill:hover,.skill:focus-visible,.skill.open{border-color:var(--pine);color:var(--pine);transform:translateY(-2px);outline:none;}
.tags li.plain .skill{cursor:default;}

/* floating tooltip */
.tooltip{
  position:fixed;z-index:100;max-width:280px;
  background:var(--ink);color:var(--paper);
  font-family:var(--sans);font-size:0.84rem;line-height:1.45;
  padding:0.6rem 0.8rem;border-radius:6px;
  box-shadow:0 10px 30px rgba(0,0,0,0.25);
  opacity:0;pointer-events:none;transform:translateY(4px);
  transition:opacity .14s,transform .14s;
}
.tooltip.show{opacity:1;transform:none;}
.tooltip .tt-term{font-family:var(--mono);font-size:0.72rem;color:#cfe3d6;letter-spacing:0.04em;display:block;margin-bottom:0.25rem;text-transform:uppercase;}
.tooltip::after{content:"";position:absolute;bottom:-6px;left:var(--arrow,50%);transform:translateX(-50%);border:6px solid transparent;border-top-color:var(--ink);border-bottom:0;}
.tooltip.below::after{top:-6px;bottom:auto;border-top:0;border-bottom-color:var(--ink);}

/* ---- Cert tracker ---- */
.cert-progress{margin:0 0 1.8rem;}
.cert-progress .bar{height:8px;border-radius:999px;background:var(--line);overflow:hidden;}
.cert-progress .bar span{display:block;height:100%;width:20%;background:linear-gradient(90deg,var(--pine),var(--pine-deep));border-radius:999px;transition:width 1s cubic-bezier(.2,.7,.2,1);}
.cert-progress .pct{font-family:var(--mono);font-size:0.76rem;color:var(--muted);margin-top:0.5rem;display:flex;justify-content:space-between;}
.cert-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:0.8rem;}
.cert{
  text-align:left;border:1px solid var(--line);border-radius:4px;background:rgba(255,255,255,0.45);
  padding:1rem;cursor:pointer;font:inherit;transition:transform .15s,border-color .15s,box-shadow .15s;
}
.cert:hover{transform:translateY(-3px);border-color:var(--pine);box-shadow:0 8px 22px rgba(36,72,56,0.10);}
.cert .code{font-family:var(--serif);font-weight:600;font-size:1.25rem;display:block;}
.cert .pill{font-family:var(--mono);font-size:0.66rem;letter-spacing:0.06em;text-transform:uppercase;padding:0.15rem 0.45rem;border-radius:999px;display:inline-block;margin-top:0.5rem;}
.cert.done{border-left:3px solid var(--pine);}
.cert.done .pill{background:var(--pine);color:var(--paper);}
.cert.todo .pill{background:transparent;border:1px solid var(--muted);color:var(--muted);}
.cert .desc{font-size:0.86rem;color:var(--ink-soft);margin-top:0.7rem;display:none;}
.cert.open .desc{display:block;}
.cert.open{border-color:var(--pine);}

/* ---- Projects ---- */
.proj-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.2rem;}
.proj{border:1px solid var(--line);border-radius:4px;background:rgba(255,255,255,0.45);padding:1.4rem;display:flex;flex-direction:column;transition:transform .15s,border-color .15s,box-shadow .15s;}
.proj:hover{transform:translateY(-3px);border-color:var(--pine);box-shadow:0 8px 22px rgba(36,72,56,0.10);}
.proj h3{font-family:var(--serif);font-weight:600;font-size:1.3rem;margin:0 0 0.5rem;}
.proj p{margin:0 0 1rem;color:var(--ink-soft);font-size:0.96rem;flex:1;}
.proj .stack{display:flex;flex-wrap:wrap;gap:0.35rem;margin:0 0 0.9rem;}
.proj .stack span{font-family:var(--mono);font-size:0.7rem;color:var(--muted);border:1px solid var(--line);border-radius:2px;padding:0.15rem 0.4rem;}
.proj .links{font-family:var(--mono);font-size:0.76rem;}
.proj .links a{color:var(--pine);text-decoration:none;border-bottom:1px solid transparent;transition:border-color .15s;}
.proj .links a:hover{border-color:var(--pine);}
.proj.placeholder{border-style:dashed;background:transparent;}

/* ---- Blog ---- */
.blog-list{display:flex;flex-direction:column;gap:0;}
.post-row{display:grid;grid-template-columns:8rem 1fr;gap:0.4rem 1.6rem;padding:1.3rem 0;border-bottom:1px solid var(--line-soft);text-decoration:none;color:inherit;transition:padding-left .15s;}
.post-row:hover{padding-left:0.5rem;}
.post-row:hover .post-title{color:var(--pine);}
.post-row .date{font-family:var(--mono);font-size:0.76rem;color:var(--muted);padding-top:0.2rem;}
.post-title{font-family:var(--serif);font-weight:600;font-size:1.25rem;margin:0;transition:color .15s;}
.post-row p{margin:0.3rem 0 0;color:var(--ink-soft);font-size:0.95rem;}
.blog-empty{font-family:var(--mono);font-size:0.84rem;color:var(--muted);border:1px dashed var(--line);border-radius:4px;padding:1.2rem;}

/* ---- Languages / cards ---- */
.langs{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;}
.langs li{border:1px solid var(--line);border-radius:2px;padding:1rem 1.1rem;background:rgba(255,255,255,0.4);}
.langs .lang{font-family:var(--serif);font-weight:600;font-size:1.2rem;}
.langs .level{font-family:var(--mono);font-size:0.76rem;color:var(--muted);margin-top:0.2rem;}
.duo{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;}
.card{border:1px solid var(--line);border-left:3px solid var(--pine);background:rgba(255,255,255,0.4);padding:1.3rem 1.4rem;border-radius:2px;}
.card .label{font-family:var(--mono);font-size:0.72rem;text-transform:uppercase;letter-spacing:0.16em;color:var(--pine);margin:0 0 0.6rem;}
.card .pub{font-family:var(--serif);font-size:1.12rem;font-style:italic;line-height:1.35;margin:0;}
.card p{margin:0;color:var(--ink-soft);}

/* ---- About / now ---- */
.about-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:2.5rem;align-items:start;}
.about-grid p{margin:0 0 1rem;color:var(--ink-soft);max-width:60ch;}
.now-box{border:1px solid var(--line);border-radius:4px;background:rgba(255,255,255,0.45);padding:1.3rem;}
.now-box h3{font-family:var(--mono);font-size:0.72rem;text-transform:uppercase;letter-spacing:0.16em;color:var(--pine);margin:0 0 0.9rem;}
.now-box ul{list-style:none;margin:0;padding:0;}
.now-box li{position:relative;padding-left:1.2rem;margin:0.5rem 0;font-size:0.94rem;color:var(--ink-soft);}
.now-box li::before{content:"\2014";position:absolute;left:0;color:var(--pine);}
@media (max-width:680px){.about-grid{grid-template-columns:1fr;gap:1.6rem;}}

/* ---- Footer ---- */
.foot{margin-top:4rem;padding-top:1.4rem;border-top:1px solid var(--line);font-family:var(--mono);font-size:0.74rem;color:var(--muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:0.5rem;}

/* ---- Article (blog post) ---- */
.article{max-width:680px;}
.article .kicker{font-family:var(--mono);font-size:0.74rem;letter-spacing:0.1em;text-transform:uppercase;color:var(--pine);}
.article h1{font-family:var(--serif);font-weight:600;font-size:clamp(2rem,6vw,3rem);line-height:1.05;letter-spacing:-0.02em;margin:0.6rem 0 0.5rem;}
.article .byline{font-family:var(--mono);font-size:0.78rem;color:var(--muted);margin-bottom:2rem;}
.article p{margin:0 0 1.2rem;font-size:1.06rem;color:var(--ink-soft);}
.article h2{font-family:var(--serif);font-weight:600;font-size:1.6rem;margin:2rem 0 0.8rem;}
.article a.back{font-family:var(--mono);font-size:0.78rem;color:var(--pine);text-decoration:none;}
.article pre{background:var(--ink);color:var(--paper);padding:1rem 1.2rem;border-radius:6px;overflow:auto;font-family:var(--mono);font-size:0.85rem;}
.article code{font-family:var(--mono);font-size:0.9em;}

/* ---- Responsive ---- */
@media (max-width:760px){.nav-links{display:none;}}
@media (max-width:620px){
  body{font-size:16px;}
  .entry,.post-row{grid-template-columns:1fr;gap:0.3rem;}
  .entry .when,.post-row .date{padding-top:0;}
}

/* ---- Print ---- */
@media print{
  :root{--paper:#fff;}
  .nav,.lang-toggle,.tooltip,.foot,#blog,.badges{display:none!important;}
  body{background:#fff;color:#000;font-size:10.5pt;}
  .wrap{max-width:none;padding:0;}
  .js [data-reveal]{opacity:1!important;transform:none!important;}
  .contact a,.contact span,.skill,.langs li,.card,.cert,.proj{background:#fff;border-color:#bbb;}
  .cert .desc{display:block!important;}
  .entry,section,.cert,.proj{break-inside:avoid;}
  a{text-decoration:none;}
}