:root{
  --ink:#1a1a1a;
  --muted:#6b6b6b;
  --bg:#ffffff;
  --line:#e8e8e8;
  --gap: 28px;
}
*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family: -apple-system, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing:antialiased;
}

/* --- Header / Nav --- */
header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 20px 40px;
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  background:rgba(255,255,255,0.92);
  backdrop-filter: blur(6px);
  z-index:10;
}
.logo{
  font-weight:600;
  font-size:15px;
  letter-spacing:0.02em;
  text-decoration:none;
  color:var(--ink);
}
nav ul{
  list-style:none;
  display:flex;
  gap:32px;
  margin:0;
  padding:0;
  font-size:14px;
}
nav a{
  text-decoration:none;
  color:var(--ink);
  position:relative;
}
nav a:hover{ color:var(--muted); }
.has-dropdown{ position:relative; }
.dropdown{
  display:none;
  position:absolute;
  top:24px;
  left:0;
  background:#fff;
  border:1px solid var(--line);
  padding:10px 0;
  min-width:280px;
  box-shadow:0 8px 24px rgba(0,0,0,0.06);
}
.has-dropdown:hover .dropdown{ display:block; }
.dropdown a{
  display:block;
  padding:8px 18px;
  font-size:13px;
  color:var(--ink);
}
.dropdown a:hover{ background:#f7f7f7; }

/* --- Grid gallery (homepage) --- */
main{ padding: 48px 40px 80px; max-width: 1100px; margin: 0 auto; }
.grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}
@media (max-width: 900px){ .grid{ grid-template-columns: repeat(2,1fr);} }
@media (max-width: 560px){ .grid{ grid-template-columns: 1fr;} }

.tile{ text-decoration:none; color:var(--ink); display:block; }
.thumb{
  width:100%;
  aspect-ratio: 4/3;
  border-radius:2px;
  overflow:hidden;
  background:#f0efec;
  display:flex;
  align-items:center;
  justify-content:center;
  position:relative;
}
.thumb .placeholder-label{
  font-size:12px;
  color:#b3b0aa;
  letter-spacing:0.08em;
  text-transform:uppercase;
}
.thumb img{
  width:100%; height:100%; object-fit:cover;
  transition: transform .5s ease;
}
.tile:hover img{ transform: scale(1.03); }

.caption{
  margin-top:10px;
  font-style:italic;
  font-size:14px;
  color:var(--muted);
}

/* --- Project / article pages --- */
.article-header{
  max-width: 760px;
  margin: 0 auto 40px;
}
.article-header h1{
  font-size: 28px;
  margin: 0 0 8px;
  font-weight:600;
}
.article-header .meta{
  font-size:13px;
  color:var(--muted);
  font-style:italic;
}
.article-body{
  max-width: 760px;
  margin: 0 auto 48px;
  font-size:16px;
  line-height:1.7;
}
.article-body p{ margin: 0 0 18px; }

.gallery{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gap);
  max-width: 1000px;
  margin: 0 auto;
}
@media (max-width: 700px){ .gallery{ grid-template-columns: 1fr; } }
.gallery figure{
  margin:0;
}
.gallery .thumb{ aspect-ratio: auto; }
.gallery img{
  width:100%;
  display:block;
  border-radius:2px;
}

/* --- Simple content pages (About / Publications) --- */
.page-header{
  max-width: 760px;
  margin: 0 auto 32px;
}
.page-header h1{
  font-size: 26px;
  font-weight:600;
  margin:0;
}
.page-body{
  max-width: 760px;
  margin: 0 auto;
  font-size:16px;
  line-height:1.75;
}
.page-body h2{
  font-size:14px;
  letter-spacing:0.06em;
  text-transform:uppercase;
  color:var(--muted);
  margin: 36px 0 14px;
  border-top:1px solid var(--line);
  padding-top: 20px;
}
.page-body h2:first-child{ border-top:none; padding-top:0; margin-top:0; }
.page-body p{ margin:0 0 14px; }
.page-body a{ color:var(--ink); }

.about-portrait{
  max-width: 300px;
  border-radius:2px;
  margin: 0 0 32px;
}

footer{
  padding:24px 40px;
  border-top:1px solid var(--line);
  font-size:12px;
  color:var(--muted);
  text-align:center;
}