/* Hartensveld site — shared theme (resume / archive / project pages) */
:root{
  --bg:#0b0e14;--surface:#11161f;--surface-2:#161c28;--line:#242c3c;
  --ink:#e9edf5;--muted:#97a0b3;
  --gan:#6fa8ff;--gan-dim:#33507f;--litho:#ffc14d;
  --radius:10px;
  --display:"Sora","Inter",system-ui,sans-serif;
  --body:"Inter",system-ui,sans-serif;
  --mono:"IBM Plex Mono","SFMono-Regular",Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--gan);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible{outline:2px solid var(--litho);outline-offset:3px;border-radius:2px}
img{max-width:100%;display:block}
.wrap{max-width:1100px;margin:0 auto;padding:0 24px}
.wrap--narrow{max-width:820px}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(11,14,20,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-family:var(--mono);font-size:14px;letter-spacing:.04em;color:var(--ink)}
.brand b{color:var(--gan);font-weight:500}
.brand:hover{text-decoration:none}
.nav-links{display:flex;gap:26px;list-style:none}
.nav-links a{font-family:var(--mono);font-size:13px;color:var(--muted);letter-spacing:.05em}
.nav-links a:hover{color:var(--ink);text-decoration:none}
@media(max-width:760px){.nav-links{display:none}}

/* layer tags + headings */
.layer-tag{display:flex;align-items:center;gap:14px;font-family:var(--mono);font-size:13px;letter-spacing:.14em;color:var(--gan);margin-bottom:14px}
.layer-tag .mark{width:15px;height:15px;flex:none;position:relative;opacity:.9}
.layer-tag .mark::before,.layer-tag .mark::after{content:"";position:absolute;background:var(--gan)}
.layer-tag .mark::before{left:50%;top:0;width:1px;height:100%;transform:translateX(-50%)}
.layer-tag .mark::after{top:50%;left:0;height:1px;width:100%;transform:translateY(-50%)}
.layer-tag .rule{flex:1;height:1px;background:var(--line)}
h1{font-family:var(--display);font-weight:700;font-size:clamp(30px,4.4vw,44px);line-height:1.12;letter-spacing:-.01em}
h2{font-family:var(--display);font-weight:700;font-size:clamp(24px,3vw,32px);letter-spacing:-.01em;margin-bottom:18px}
section{padding:72px 0}
@media(max-width:760px){section{padding:52px 0}}
.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* buttons */
.btn{display:inline-block;padding:13px 22px;border-radius:var(--radius);font-family:var(--display);font-weight:600;font-size:15px;border:1px solid var(--line);color:var(--ink);background:var(--surface);transition:border-color .15s,transform .15s}
.btn:hover{text-decoration:none;border-color:var(--gan);transform:translateY(-1px)}
.btn.primary{background:var(--gan);border-color:var(--gan);color:#0b0e14}
.btn.primary:hover{filter:brightness(1.08)}

/* page header band */
.page-head{padding:64px 0 48px;border-bottom:1px solid var(--line)}
.page-head .kicker{font-family:var(--mono);font-size:13px;letter-spacing:.12em;color:var(--litho);margin-bottom:16px}
.page-head .lede{margin-top:16px;font-size:18px;color:var(--muted);max-width:60ch}
.page-head .cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}

/* resume entries */
.cv-item{display:grid;grid-template-columns:200px 1fr;gap:8px 32px;padding:26px 0;border-top:1px solid var(--line)}
.cv-item:first-of-type{border-top:none}
@media(max-width:700px){.cv-item{grid-template-columns:1fr}}
.cv-item .when{font-family:var(--mono);font-size:13px;color:var(--muted);letter-spacing:.04em;padding-top:4px}
.cv-item h3{font-family:var(--display);font-weight:600;font-size:19px}
.cv-item .org{font-family:var(--mono);font-size:13px;color:var(--litho);letter-spacing:.06em;margin:4px 0 10px}
.cv-item p,.cv-item li{color:var(--muted);font-size:15.5px}
.cv-item ul{list-style:none;margin-top:4px}
.cv-item li{padding:3px 0 3px 18px;position:relative}
.cv-item li::before{content:"";position:absolute;left:0;top:13px;width:8px;height:1px;background:var(--gan)}
.cv-item .links{margin-top:8px;font-family:var(--mono);font-size:13px}

/* publications / patents */
.pub{padding:22px 0;border-top:1px solid var(--line)}
.pub:first-of-type{border-top:none}
.pub h3{font-family:var(--display);font-weight:600;font-size:18px}
.pub .venue{font-family:var(--mono);font-size:12.5px;color:var(--litho);letter-spacing:.06em;margin:4px 0 10px}
.pub p{color:var(--muted);font-size:15.5px}
.pub .links{margin-top:8px;font-family:var(--mono);font-size:13px}
.pat-list{list-style:none}
.pat-list li{display:grid;grid-template-columns:1fr auto;gap:18px;align-items:baseline;padding:13px 0;border-top:1px solid var(--line);font-size:15.5px}
.pat-list li:first-child{border-top:none}
.pat-list .t{color:var(--ink)}
.pat-list .n{font-family:var(--mono);font-size:12.5px;color:var(--muted);white-space:nowrap}
@media(max-width:640px){.pat-list li{grid-template-columns:1fr}.pat-list .n{white-space:normal}}
.note{font-family:var(--mono);font-size:13px;color:var(--muted);margin-top:18px}

/* archive index grid */
.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media(max-width:980px){.proj-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.proj-grid{grid-template-columns:1fr}}
.proj{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;color:var(--ink);transition:border-color .15s,transform .15s}
.proj:hover{text-decoration:none;border-color:var(--gan);transform:translateY(-2px)}
.proj .thumb{aspect-ratio:16/10;overflow:hidden;background:#0e1320}
.proj .thumb img{width:100%;height:100%;object-fit:cover}
.proj .body{padding:16px 18px 18px}
.proj h3{font-family:var(--display);font-weight:600;font-size:16px;line-height:1.35}
.proj .sub{font-size:13.5px;color:var(--muted);margin-top:6px;line-height:1.5}

/* article (project post) */
.article-head{padding:56px 0 36px}
.article-head .lede{margin-top:14px;font-size:18px;color:var(--muted);max-width:62ch}
.article-hero{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:48px}
.article-body{padding-bottom:72px}
.article-body p{color:#c3cad8;margin:0 0 20px;max-width:72ch}
.article-body h2{margin:36px 0 16px}
.article-body b,.article-body strong{color:var(--ink)}
.article-body img{border:1px solid var(--line);border-radius:var(--radius);margin:28px auto}
.article-body .gallery-post{margin:28px 0}
.article-body .gallery-post__caption{font-family:var(--mono);font-size:12.5px;color:var(--muted);text-align:center;margin:-16px 0 28px}
.article-body pre{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;overflow-x:auto;font-family:var(--mono);font-size:13.5px;line-height:1.7;color:#c3cad8;margin:0 0 20px}
.article-foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:24px 0 64px;border-top:1px solid var(--line);font-family:var(--mono);font-size:13px}

/* footer */
footer{padding:28px 0;border-top:1px solid var(--line)}
.foot-inner{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:var(--mono);font-size:12px;color:var(--muted)}