/* ===========================================================
   Emin Ahmet Kaplan — academic site
   Design system: deep navy ink · warm paper · restrained ochre
   Fraunces (display serif) + Public Sans (body)
   =========================================================== */
:root{
  --ink:#16263f;
  --ink-soft:#3d4b60;
  --muted:#737d8c;
  --paper:#faf8f3;
  --paper-2:#f3efe6;
  --line:#e4ddcf;
  --accent:#8a6d3b;
  --accent-deep:#6e5429;
  --white:#ffffff;
  --maxw:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  font-family:'Public Sans',-apple-system,BlinkMacSystemFont,sans-serif;
  color:var(--ink);background:var(--paper);line-height:1.65;font-weight:300;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px}

/* ---------- header / nav ---------- */
header{position:sticky;top:0;z-index:60;background:rgba(250,248,243,.88);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:11px;font-family:'Fraunces',serif;font-weight:500;font-size:1.02rem;letter-spacing:.2px}
.brand .mono{width:30px;height:30px;border-radius:6px;background:var(--ink);color:var(--paper);
  display:flex;align-items:center;justify-content:center;font-size:.62rem;letter-spacing:.5px}
.brand b{font-weight:500}.brand span{color:var(--accent)}
nav ul{display:flex;gap:32px;list-style:none}
nav a{font-size:.8rem;letter-spacing:.07em;text-transform:uppercase;color:var(--ink-soft);position:relative;transition:color .2s}
nav a::after{content:"";position:absolute;left:0;bottom:-7px;width:0;height:1px;background:var(--accent);transition:width .25s}
nav a:hover,nav a.active{color:var(--ink)}nav a:hover::after,nav a.active::after{width:100%}
.menu-btn{display:none;background:none;border:none;font-size:1.5rem;color:var(--ink);cursor:pointer;line-height:1}

/* ---------- hero ---------- */
.hero{padding:92px 0 70px;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:230px 1fr;gap:60px;align-items:center}
.portrait{width:230px;height:230px;border-radius:50%;overflow:hidden;position:relative;
  box-shadow:0 22px 48px -20px rgba(22,38,63,.55)}
.portrait img{width:100%;height:100%;object-fit:cover}
.portrait::after{content:"";position:absolute;inset:-10px;border:1px solid var(--accent);border-radius:50%;opacity:.45}
.eyebrow{font-size:.76rem;letter-spacing:.24em;text-transform:uppercase;color:var(--accent);margin-bottom:15px;font-weight:500}
h1{font-family:'Fraunces',serif;font-weight:500;font-size:3.05rem;line-height:1.07;letter-spacing:-.012em;margin-bottom:8px}
.roles{font-family:'Fraunces',serif;font-style:italic;font-size:1.16rem;color:var(--ink-soft);margin-bottom:22px}
.affil{font-size:.97rem;color:var(--muted);max-width:48ch}
.affil strong{color:var(--ink-soft);font-weight:500}

/* profile chips */
.links{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.chip{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--white);
  padding:8px 16px;border-radius:40px;font-size:.8rem;letter-spacing:.02em;color:var(--ink-soft);transition:all .2s}
.chip:hover{border-color:var(--accent);color:var(--ink);transform:translateY(-2px);box-shadow:0 8px 18px -12px rgba(22,38,63,.4)}
.chip svg{width:15px;height:15px;flex:none}

/* ---------- sections ---------- */
section{padding:74px 0}
.sec-head{display:flex;align-items:baseline;gap:18px;margin-bottom:36px}
.sec-num{font-family:'Fraunces',serif;color:var(--accent);font-size:.95rem}
.sec-title{font-family:'Fraunces',serif;font-weight:500;font-size:1.75rem;letter-spacing:-.01em}
.sec-rule{flex:1;height:1px;background:var(--line)}
.alt{background:var(--paper-2)}

.lead{font-size:1.17rem;line-height:1.82;color:var(--ink-soft);max-width:70ch;font-weight:300}
.lead+.lead{margin-top:18px}

/* interests */
.interests{display:flex;flex-wrap:wrap;gap:11px}
.tag{background:var(--white);border:1px solid var(--line);padding:8px 17px;border-radius:5px;font-size:.87rem;color:var(--ink-soft)}
.alt .tag{background:var(--paper)}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.stat{border-top:2px solid var(--accent);padding-top:16px}
.stat b{font-family:'Fraunces',serif;font-weight:500;font-size:2.1rem;display:block;line-height:1}
.stat span{font-size:.82rem;color:var(--muted);letter-spacing:.03em;display:block;margin-top:8px}

/* publications */
.pub{display:grid;grid-template-columns:62px 1fr;gap:22px;padding:22px 0;border-top:1px solid var(--line);align-items:start}
.pub:last-of-type{border-bottom:1px solid var(--line)}
.pub-year{font-family:'Fraunces',serif;font-size:1.2rem;color:var(--accent);padding-top:1px}
.pub-title{font-size:1.01rem;color:var(--ink);font-weight:400;margin-bottom:5px;line-height:1.45}
.pub-meta{font-size:.86rem;color:var(--muted)}
.pub-meta em{font-style:italic;color:var(--ink-soft)}
.badges{margin-top:9px;display:flex;flex-wrap:wrap;gap:7px;align-items:center}
.doi,.idx{font-size:.7rem;letter-spacing:.07em;text-transform:uppercase;border-radius:3px;padding:3px 9px}
.doi{color:var(--accent-deep);border:1px solid var(--accent);transition:all .2s}
.doi:hover{background:var(--accent);color:var(--white)}
.idx{color:var(--ink-soft);background:var(--paper-2);border:1px solid var(--line)}
.alt .idx{background:var(--paper)}
.press{color:#7a6a3a;background:#f4eed9;border:1px solid #e4d9b0;font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;border-radius:3px;padding:3px 9px}
.more{margin-top:32px;display:inline-flex;align-items:center;gap:8px;font-size:.92rem;color:var(--ink);border-bottom:1px solid var(--accent);padding-bottom:3px;transition:gap .2s}
.more:hover{gap:13px}

/* publications page groups */
.pubgroup{margin-bottom:14px}
.pubgroup h3{font-family:'Fraunces',serif;font-weight:500;font-size:1.18rem;color:var(--ink);margin:46px 0 6px;
  display:flex;align-items:baseline;gap:12px}
.pubgroup h3 small{font-family:'Public Sans';font-weight:300;font-size:.78rem;letter-spacing:.06em;
  text-transform:uppercase;color:var(--muted)}
.pubgroup:first-child h3{margin-top:0}

/* cv page */
.cv-row{display:grid;grid-template-columns:150px 1fr;gap:28px;padding:20px 0;border-top:1px solid var(--line)}
.cv-row:last-child{border-bottom:1px solid var(--line)}
.cv-when{font-family:'Fraunces',serif;color:var(--accent);font-size:.95rem;padding-top:1px}
.cv-what h4{font-size:1rem;font-weight:500;color:var(--ink);margin-bottom:3px}
.cv-what p{font-size:.9rem;color:var(--muted)}
.cv-what em{font-style:italic;color:var(--ink-soft)}
.btn{display:inline-flex;align-items:center;gap:9px;background:var(--ink);color:var(--paper);
  padding:13px 24px;border-radius:6px;font-size:.86rem;letter-spacing:.03em;transition:all .2s}
.btn:hover{background:#0f1c30;transform:translateY(-2px);box-shadow:0 10px 24px -14px rgba(22,38,63,.6)}
.btn svg{width:16px;height:16px}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--white);border-color:var(--accent)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.contact-grid h4{font-family:'Fraunces',serif;font-weight:500;font-size:1.05rem;margin-bottom:9px}
.contact-grid p,.contact-grid a{color:var(--ink-soft);font-size:.95rem}
.contact-grid a{color:var(--accent-deep);border-bottom:1px solid transparent;transition:border .2s}
.contact-grid a:hover{border-color:var(--accent)}

/* footer */
footer{border-top:1px solid var(--line);padding:36px 0;color:var(--muted);font-size:.82rem}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;align-items:center}
.foot-links{display:flex;gap:18px}
.foot-links a:hover{color:var(--ink)}

/* page intro (sub-pages) */
.page-intro{padding:72px 0 8px}
.page-intro .eyebrow{margin-bottom:12px}
.page-intro h1{font-size:2.6rem}
.page-intro p{color:var(--muted);margin-top:14px;max-width:60ch;font-size:1.02rem}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);animation:rise .85s cubic-bezier(.2,.7,.3,1) forwards}
@keyframes rise{to{opacity:1;transform:none}}
.d1{animation-delay:.05s}.d2{animation-delay:.16s}.d3{animation-delay:.28s}.d4{animation-delay:.4s}
@media(prefers-reduced-motion:reduce){.reveal{animation:none;opacity:1;transform:none}}

/* responsive */
@media(max-width:780px){
  .wrap{padding:0 22px}
  nav ul{display:none}
  nav ul.open{display:flex;flex-direction:column;position:absolute;top:72px;right:22px;background:var(--paper);
    padding:20px 24px;border:1px solid var(--line);border-radius:10px;gap:18px;box-shadow:0 16px 40px -20px rgba(22,38,63,.4)}
  .menu-btn{display:block}
  .hero{padding:56px 0 46px}
  .hero-grid{grid-template-columns:1fr;gap:30px;text-align:center;justify-items:center}
  .affil{margin:0 auto}.links{justify-content:center}
  h1{font-size:2.25rem}.page-intro h1{font-size:2rem}
  .stats{grid-template-columns:1fr 1fr;gap:20px}
  .contact-grid{grid-template-columns:1fr;gap:26px}
  .pub,.cv-row{grid-template-columns:1fr;gap:7px}
  .pub-year,.cv-when{font-size:1rem}
}