/* Halil Mert Solak — personal research site */
:root{
  --green:#2F5D50; --green-dark:#1E3D35; --green-ink:#24483E;
  --sage:#F2F5F3; --sage-2:#E3EAE6; --line:#DCE3DF;
  --ink:#1B2421; --ink-2:#3A4642; --muted:#5F6B66;
  --clay:#8A5A22; --white:#fff;
  --serif:"Libre Baskerville",Georgia,serif;
  --sans:"DM Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --radius:12px; --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--white);color:var(--ink);font:400 17px/1.7 var(--sans);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--green);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--green-dark)}
h1,h2,h3{font-family:var(--serif);color:var(--ink);font-weight:700;line-height:1.25;margin:0 0 .6em}
h1{font-size:clamp(30px,4vw,40px)}
h2{font-size:24px;color:var(--green)}
h3{font-size:19px}
p{margin:0 0 1em}
em{font-style:italic}
.muted{color:var(--muted)}
.eyebrow{font:700 12.5px/1.4 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--green);margin:0 0 .5em}
.lede{font-size:19px;color:var(--ink-2);max-width:62ch}
.skip{position:absolute;left:-999px}
.skip:focus{left:12px;top:12px;background:#fff;padding:8px 12px;z-index:10}
svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* top bar */
.topbar{background:var(--green-dark);color:#fff;position:sticky;top:0;z-index:5}
.topbar-inner{max-width:var(--max);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:16px}
.brand{font:700 19px/1 var(--serif);color:#fff;text-decoration:none}
.brand span{font-weight:400;opacity:.8}
.brand:hover{color:#fff}
#site-nav{display:flex;gap:4px;flex-wrap:wrap}
#site-nav a{color:#E3ECE7;text-decoration:none;font-weight:500;font-size:15px;padding:8px 12px;border-radius:8px}
#site-nav a:hover{background:rgba(255,255,255,.08);color:#fff}
#site-nav a[aria-current=page]{background:rgba(255,255,255,.14);color:#fff}
.menu-btn{display:none;background:none;border:0;color:#fff;padding:10px;margin-right:-10px;cursor:pointer}
.menu-btn svg{width:24px;height:24px}

/* layout */
.layout{max-width:var(--max);margin:0 auto;padding:40px 24px 64px;display:grid;grid-template-columns:260px minmax(0,1fr);gap:56px;align-items:start}
.sidebar{position:sticky;top:96px;background:var(--sage);border:1px solid var(--line);border-radius:16px;padding:28px 22px;text-align:center}
.avatar{width:160px;height:160px;border-radius:50%;object-fit:cover;margin:0 auto 16px;border:4px solid #fff;box-shadow:0 2px 10px rgba(30,61,53,.15)}
.who .name{font:700 20px/1.3 var(--serif);margin:0 0 4px}
.who .role{color:var(--green);font-weight:500;margin:0 0 14px}
.sidebar ul{list-style:none;margin:0;padding:0;text-align:left}
.meta{border-top:1px solid var(--line);padding-top:14px!important;margin-bottom:14px!important}
.meta li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2);margin-bottom:8px;line-height:1.45}
.meta svg{color:var(--green);margin-top:2px}
.links{border-top:1px solid var(--line);padding-top:12px!important}
.links a{display:flex;gap:10px;align-items:center;padding:6px 8px;margin:0 -8px;border-radius:8px;font-size:14.5px;text-decoration:none;color:var(--ink-2);overflow-wrap:anywhere}
.links a:hover{background:var(--sage-2);color:var(--green-dark)}
.links svg{color:var(--green)}
.btn{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 20px;background:var(--green);color:#fff;border-radius:999px;font-weight:700;font-size:15px;text-decoration:none}
.btn:hover{background:var(--green-dark);color:#fff}
.btn-cv{margin-top:16px;width:100%;justify-content:center}

/* content */
.content{min-width:0}
.intro{padding-bottom:8px}
.intro h1{font-size:clamp(32px,4.5vw,44px);margin-bottom:.35em}
.bio{background:var(--sage);border-radius:var(--radius);padding:28px;margin:24px 0 8px;display:flow-root}
.bio-fig{float:left;width:min(44%,340px);margin:4px 28px 12px 0}
.bio-fig img{border-radius:8px}
.bio-fig figcaption{font-size:13.5px;color:var(--muted);margin-top:8px;line-height:1.45}
.bio p:last-child{margin-bottom:0}
.block{margin-top:48px}
.block-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap;border-bottom:2px solid var(--sage-2);margin-bottom:22px}
.block-head h2{margin-bottom:.4em}
.more{font-weight:700;font-size:15px;text-decoration:none}
.more:hover{text-decoration:underline}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:24px}
.card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;background:#fff;transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:0 8px 24px rgba(30,61,53,.12);transform:translateY(-2px)}
.card-img{display:block;aspect-ratio:3/2;background:var(--sage-2);overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:18px}
.card-body h3 a{color:var(--ink);text-decoration:none}
.card-body h3 a:hover{color:var(--green)}
.card-body p:not(.eyebrow){font-size:15.5px;color:var(--ink-2)}
.card-body .more{margin-top:auto}

.news{list-style:none;margin:0;padding:0}
.news li{display:grid;grid-template-columns:100px 1fr;gap:20px;padding:14px 0;border-bottom:1px solid var(--line)}
.news li:first-child{padding-top:0}
.news time{font-weight:700;color:var(--green);font-size:15px;padding-top:2px;white-space:nowrap}
.news p{margin:0}
.news.full{margin-top:24px}

.project{padding:28px 0;border-bottom:1px solid var(--line);scroll-margin-top:90px}
.project:last-child{border-bottom:0}
.project-img{width:100%;max-height:360px;object-fit:cover;border-radius:var(--radius);margin-bottom:18px;background:var(--sage-2)}
.project.prev{background:var(--sage);border:0;border-radius:var(--radius);padding:26px 28px;margin-bottom:20px}
.facts{display:grid;grid-template-columns:130px 1fr;gap:6px 16px;font-size:15px;margin:16px 0;padding-top:14px;border-top:1px solid var(--line)}
.facts dt{font-weight:700;color:var(--ink)}
.facts dd{margin:0;color:var(--ink-2)}

.pubs{margin:0;padding-left:1.4em}
.pubs li{margin-bottom:16px;padding-left:6px}
.pubs li::marker{color:var(--green);font-weight:700}

.cv-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px 24px;background:var(--sage);border-radius:var(--radius);padding:26px 28px}
.cv-head h1{margin-bottom:.2em}
.cv-head .lede{margin:0;font-size:17px}
.row{padding:14px 0;border-bottom:1px solid var(--line)}
.row:last-child{border-bottom:0}
.row-head{display:flex;justify-content:space-between;gap:4px 16px;flex-wrap:wrap;align-items:baseline}
.row h3{font-size:17.5px;margin:0 0 4px}
.when{color:var(--green);font-weight:700;font-size:15px;white-space:nowrap}
.row p{margin:0 0 2px;color:var(--ink-2);font-size:15.5px}
.talks{list-style:none;margin:0;padding:0}
.talks li{display:grid;grid-template-columns:72px 1fr;gap:16px;padding:14px 0;border-bottom:1px solid var(--line)}
.talks p{margin:0;font-size:15.5px}
.talks .t{font-weight:700;color:var(--ink)}
.badge{font:700 11px/1 var(--sans);letter-spacing:.08em;text-transform:uppercase;padding:6px 0;border-radius:6px;text-align:center;height:fit-content;margin-top:3px}
.badge.talk{background:var(--green);color:#fff}
.badge.poster{background:#F3E8DA;color:var(--clay)}

.poster{display:grid;grid-template-columns:minmax(0,300px) 1fr;gap:32px;align-items:center;background:var(--sage);border-radius:var(--radius);padding:28px;margin-top:24px}
.poster-img img{border-radius:6px;box-shadow:0 4px 16px rgba(30,61,53,.18);transition:transform .2s}
.poster-img:hover img{transform:scale(1.02)}
.poster h2{color:var(--ink);font-size:21px}
.photos{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,280px),1fr));gap:24px}
.photos figure{margin:0}
.photos img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px}
.photos figcaption{font-size:14.5px;margin-top:8px;line-height:1.5}

.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:20px;margin-top:28px}
.contact-card{background:var(--sage);border-radius:var(--radius);padding:22px 24px}
.contact-card h2{font-size:19px}
.contact-card p:last-child{margin:0}

.footer{background:var(--green-dark);color:#C9D7D0;font-size:14px}
.footer-inner{max-width:var(--max);margin:0 auto;padding:22px 24px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px}

/* responsive */
@media (max-width:900px){
  .layout{grid-template-columns:1fr;gap:28px;padding-top:24px}
  .sidebar{position:static;display:grid;grid-template-columns:96px 1fr;gap:4px 18px;text-align:left;padding:20px}
  .avatar{width:96px;height:96px;margin:0;grid-row:span 2}
  .who{align-self:end}
  .who .role{margin-bottom:0}
  .meta,.links,.btn-cv{grid-column:1/-1}
  .links{display:flex;flex-wrap:wrap;gap:4px 14px}
  .links a{margin:0}
}
@media (max-width:760px){
  .menu-btn{display:block}
  #site-nav{display:none;position:absolute;left:0;right:0;top:64px;background:var(--green-dark);flex-direction:column;padding:8px 16px 16px}
  #site-nav.open{display:flex}
  #site-nav a{padding:12px}
  .bio-fig{float:none;width:100%;margin:0 0 16px}
  .poster{grid-template-columns:1fr}
  .news li{grid-template-columns:1fr;gap:2px}
  .facts{grid-template-columns:1fr}
  .bio,.project.prev,.cv-head,.poster{padding:20px}
  body{font-size:16px}
}

/* lightbox & image fixes */
.project-img{max-height:none;height:auto;object-fit:contain;background:none}
.poster-img,.photos a{cursor:zoom-in}
.lightbox{border:0;padding:0;background:transparent;max-width:96vw;max-height:96vh;overflow:visible}
.lightbox::backdrop{background:rgba(14,26,22,.88)}
.lightbox img{max-width:94vw;max-height:92vh;width:auto;height:auto;border-radius:6px;cursor:zoom-out}
.lb-close{position:fixed;top:14px;right:18px;width:44px;height:44px;border:0;border-radius:50%;background:rgba(255,255,255,.15);color:#fff;font-size:28px;line-height:1;cursor:pointer}
.lb-close:hover{background:rgba(255,255,255,.3)}

/* talks/posters lists */
.talks li{display:block}
h3.sub{font-family:var(--sans);font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--green);margin:22px 0 4px}
h3.sub:first-of-type{margin-top:4px}
.intro{padding-bottom:0}
.intro h1{margin-bottom:0}
.bio{margin-top:20px}
.content > h1 + .block{margin-top:12px}

/* justified body paragraphs (About & Research) */
.bio > p, .card-body > p:not(.eyebrow), .project > p:not(.eyebrow){text-align:justify;hyphens:auto;-webkit-hyphens:auto}