:root {
  --bg: #0b0c10;  /* dark slate */
  --fg: #e5e7eb;  /* light gray */
  --muted: #9ca3af;
  --accent: #60a5fa;
  --card: #111827;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Inter, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--fg);
  background: radial-gradient(1200px 600px at 10% -10%, #111 8%, transparent 40%), var(--bg);
}
.container { width: min(100%, 980px); margin: 0 auto; padding: 0 1rem; }
.site-header { position: sticky; top: 0; backdrop-filter: blur(6px); background: rgba(11,12,16,0.7); border-bottom: 1px solid #111; }
.site-header nav { display: flex; align-items: center; justify-content: space-between; padding: 0.8rem 0; }
.brand { font-weight: 700; text-decoration: none; color: var(--fg); }
.nav-links a { margin-left: 1rem; color: var(--muted); text-decoration: none; }
.nav-links a:hover { color: var(--fg); }
.hero { padding: 4.5rem 0 2.5rem; }
.hero h1 { font-size: clamp(2rem, 3.5vw, 3rem); margin: 0 0 0.5rem; }
.accent { color: var(--accent); }
.btn { display: inline-block; padding: 0.6rem 1rem; border-radius: 0.8rem; border: 1px solid #2a2a2a; text-decoration: none; color: var(--fg); background: linear-gradient(180deg, #1f2937, #0f172a); box-shadow: 0 10px 30px rgba(0,0,0,0.25); }
.btn.ghost { background: transparent; }
.section { padding: 2rem 0; }
.section h2 { font-size: 1.5rem; margin-bottom: 1rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; }
.card { background: var(--card); border: 1px solid #1f2937; padding: 1rem; border-radius: 1rem; }
.site-footer { border-top: 1px solid #111; padding: 1.2rem 0; margin-top: 2rem; color: var(--muted); }

.contact-list { 
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: .6rem .9rem;
}
.contact-list a {
  display: inline-block; padding: .35rem .7rem; border-radius: 999px;
  border: 1px solid currentColor; text-decoration: none;
}


.pub-list { 
  list-style: none; padding: 0; margin: 0; 
  display: grid; gap: .9rem; 
}
.pub { line-height: 1.4; }
.pub .key { font-weight: 600; margin-right: .4rem; }
.pub .authors { white-space: nowrap; }
.pub .title { font-style: italic; }
.pub .venue, .pub .vol { opacity: .85; }
.pub .links a {
  display: inline-block; margin-left: .6rem; padding: .2rem .5rem;
  border: 1px solid currentColor; border-radius: 999px; text-decoration: none; font-size: .9em;
}
@media (max-width: 520px) {
  .pub .authors { white-space: normal; }
}

/* Responsive grid; auto wraps based on space */
.thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: .6rem;
}

/* Uniform tile size (choose the aspect you like: 16/9, 4/3, 1/1) */
.thumbs--uniform .tile { aspect-ratio: 16 / 9; }
.thumbs--uniform img {
  width: 100%; height: 100%;
  object-fit: cover; /* neat crop to fill tile */
  border-radius: 8px; display: block;
}