:root{
  --paper:#F5F7F8; --card:#FFFFFF; --rule:#E2E7EA; --rule-strong:#CFD8DD;
  --ink:#1F2A2F; --body:#46545B; --muted:#62717A; --muted-2:#7C8B93; --faint:#94A3AA;
  --accent:#2F6E8F; --accent-dark:#22536C;
  --serif:'Source Serif 4',Georgia,serif;
  --sans:'IBM Plex Sans',system-ui,-apple-system,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-dark)}
img{display:block}
ul{margin:0;padding-left:18px}

.page{padding:44px 6vw 0}
.wrap{max-width:1080px;margin:0 auto}

/* language switching */
body[data-lang="de"] .en{display:none}
body[data-lang="en"] .de{display:none}

/* header */
.masthead{display:flex;justify-content:space-between;align-items:flex-start;gap:32px;flex-wrap:wrap;border-bottom:1px solid var(--rule);padding-bottom:26px}
.identity{display:flex;gap:20px;align-items:center}
.portrait{width:88px;height:88px;border-radius:50%;object-fit:cover;object-position:50% 22%;background:#E9EEF1;border:1px solid var(--rule)}
.name{font-family:var(--serif);font-size:40px;line-height:1;letter-spacing:-0.015em}
.role{font-size:15.5px;color:var(--muted);margin-top:7px}
.masthead-right{display:flex;flex-direction:column;gap:12px;align-items:flex-end}
.masthead-actions{display:flex;gap:12px;align-items:center}
.langswitch{display:flex;border:1px solid var(--rule-strong)}
.langswitch button{font:500 12.5px var(--mono);letter-spacing:.06em;padding:9px 13px;border:none;cursor:pointer;background:transparent;color:var(--muted-2)}
.langswitch button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.btn{background:var(--ink);color:var(--paper);padding:13px 22px;font-size:14px;font-weight:500;display:inline-block}
.btn:hover{background:var(--accent);color:var(--paper)}
.btn-lg{padding:16px 28px;font-size:15px}
.availability{font-family:var(--mono);font-size:12.5px;color:var(--muted-2)}

/* hero */
.hero{display:grid;grid-template-columns:1.4fr 1fr;gap:56px;padding:46px 0 52px;border-bottom:1px solid var(--rule)}
.hero-main{display:flex;flex-direction:column;gap:20px}
.skills{font-family:var(--serif);font-size:46px;line-height:1.1;letter-spacing:-0.015em;margin:0}
.stack{display:flex;flex-wrap:wrap;gap:8px}
.stack-item{font-family:var(--mono);font-size:13.5px;letter-spacing:.02em;color:var(--accent-dark);background:#EAF1F5;border:1px solid #CFE0E9;padding:6px 11px}
.bio{margin:0;font-size:16.5px;line-height:1.65;color:var(--body);max-width:58ch;text-wrap:pretty}
.contact{display:flex;gap:22px;flex-wrap:wrap;font-size:14.5px}
.metrics{display:flex;flex-direction:column;gap:20px;border-left:1px solid var(--rule);padding-left:34px}
.metric-value{font-family:var(--serif);font-size:30px;color:var(--accent)}
.metric-label{font-size:13.5px;color:var(--muted-2);line-height:1.5;margin-top:3px}

/* section headers */
.sec{display:flex;align-items:baseline;gap:16px;padding:56px 0 22px}
.sec:first-of-type{padding-top:46px}
.sec-label{font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--accent)}
.sec-rule{flex:1;height:1px;background:var(--rule)}

/* projects */
.projects{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
.project{display:flex;flex-direction:column;gap:14px;padding:18px;border:1px solid var(--rule);background:var(--card)}
.project.is-deprecated{opacity:.78}
.shot{aspect-ratio:16/10;overflow:hidden;background:repeating-linear-gradient(135deg,#EBEFF2 0 8px,#E3EAEE 8px 16px);border:1px solid var(--rule);display:flex;align-items:center;justify-content:center}
.shot img{width:100%;height:100%;object-fit:cover;object-position:top center;display:block}
.shot span{font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;color:#93A2AA}
.project-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.project-title{font-family:var(--serif);font-size:23px}
.project-meta{font-family:var(--mono);font-size:11.5px;color:var(--muted-2)}
.project-desc{font-size:14.5px;line-height:1.6;color:var(--body);text-wrap:pretty}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto}
.tag{font-family:var(--mono);font-size:11.5px;color:var(--muted);border:1px solid var(--rule);padding:3px 8px}
.badge{font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:var(--muted-2);border:1px solid var(--rule-strong);padding:2px 7px}

/* experience */
.job{display:grid;grid-template-columns:190px 1fr;gap:32px;padding:24px 0;border-bottom:1px solid var(--rule)}
.job-date{font-family:var(--mono);font-size:12.5px;color:var(--muted-2)}
.job-body{display:flex;flex-direction:column;gap:10px}
.job-title{font-family:var(--serif);font-size:23px}
.job-org{font-size:14px;color:var(--muted-2)}
.job-body ul{display:flex;flex-direction:column;gap:8px;font-size:14.5px;line-height:1.6;color:var(--body);max-width:70ch}

/* testimonials + profile */
.lower{display:grid;grid-template-columns:1.25fr 1fr;gap:44px;padding:56px 0 0;align-items:start}
.quotes{display:flex;flex-direction:column;gap:18px}
blockquote{margin:0;font-family:var(--serif);font-size:22px;line-height:1.5;text-wrap:pretty}
.attrib{font-family:var(--mono);font-size:12.5px;color:var(--muted-2)}
.more-toggle{display:flex;align-items:center;gap:10px;background:none;border:none;padding:10px 0 0;cursor:pointer;font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--accent);align-self:flex-start}
.more-toggle .arrow{display:inline-block;font-size:14px;line-height:1;transition:transform 180ms ease}
.more-toggle[aria-expanded="true"] .arrow{transform:rotate(180deg)}
.more-toggle[aria-expanded="true"] .label-closed,
.more-toggle[aria-expanded="false"] .label-open{display:none}
.more-list{display:none;flex-direction:column;gap:22px;padding-top:8px}
.more-list.is-open{display:flex}
.more-item{display:flex;flex-direction:column;gap:7px;border-top:1px solid var(--rule);padding-top:18px}
.more-item p{margin:0;font-size:15px;line-height:1.6;color:var(--body);text-wrap:pretty}
.more-item .attrib{font-size:12px}
.profile{display:flex;flex-direction:column;gap:26px;border-left:1px solid var(--rule);padding-left:34px}
.profile-block{display:flex;flex-direction:column;gap:10px}
.profile-label{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;color:var(--faint)}
.profile-list{display:flex;flex-direction:column;gap:6px;font-size:14.5px;color:var(--body)}
.profile-list.spaced{gap:12px;line-height:1.55}

/* footer */
.cta{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap;margin-top:64px;padding:36px 0;border-top:1px solid var(--rule)}
.cta-title{font-family:var(--serif);font-size:28px}
.cta-sub{font-size:14.5px;color:var(--muted-2);margin-top:8px}
.footer{display:flex;gap:20px;flex-wrap:wrap;padding:0 0 40px;font-family:var(--mono);font-size:12px;color:var(--faint)}

@media (max-width:860px){
  .hero,.lower{grid-template-columns:1fr;gap:32px}
  .metrics,.profile{border-left:none;padding-left:0;border-top:1px solid var(--rule);padding-top:24px}
  .job{grid-template-columns:1fr;gap:12px}
  .name{font-size:32px}
  .skills{font-size:34px}
  .masthead-right{align-items:flex-start}
}

/* scroll reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s cubic-bezier(.22,.61,.36,1),transform .6s cubic-bezier(.22,.61,.36,1)}
.reveal.is-in{opacity:1;transform:none}
.projects .project{opacity:0;transform:translateY(18px);transition:opacity .55s cubic-bezier(.22,.61,.36,1),transform .55s cubic-bezier(.22,.61,.36,1)}
.projects .project.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal,.projects .project{opacity:1 !important;transform:none !important;transition:none !important}
}