:root {
  --bg: #ffffff;
  --text: #171717;
  --muted: #595959;
  --accent: #1d4ed8;
  --border: #e6e6e6;
  --maxw: 860px;
}

/* System preference (used only when the visitor hasn't picked a mode) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1a1b1e;
    --text: #e4e4e3;
    --muted: #9b9b9b;
    --accent: #7aa2f7;
    --border: #2f3033;
  }
}

/* Explicit choice via the toggle, wins in both directions */
:root[data-theme="dark"] {
  --bg: #1a1b1e;
  --text: #e4e4e3;
  --muted: #9b9b9b;
  --accent: #7aa2f7;
  --border: #2f3033;
}
:root[data-theme="light"] {
  --bg: #ffffff;
  --text: #171717;
  --muted: #595959;
  --accent: #1d4ed8;
  --border: #e6e6e6;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--accent) 35%, transparent);
  text-underline-offset: 2px;
}
a:hover { text-decoration-color: var(--accent); }

header.site {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.25rem;
  padding-bottom: 1.25rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

header.site .name {
  font-size: 1.05rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--text);
}

nav.primary { display: flex; gap: 1.1rem; font-size: 0.95rem; }
nav.primary a { text-decoration: none; color: var(--muted); }
nav.primary a:hover, nav.primary a.active { color: var(--text); text-decoration: underline; }

nav.links { display: flex; gap: 1.1rem; font-size: 0.95rem; }
nav.links a { text-decoration: none; color: var(--muted); }
nav.links a:hover { color: var(--text); text-decoration: underline; }

.theme-toggle {
  font: inherit;
  font-size: 0.85rem;
  line-height: 1;
  color: var(--muted);
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
}
.theme-toggle:hover { color: var(--text); border-color: var(--muted); }

h1 {
  font-size: 1.9rem;
  margin: 0 0 0.35rem;
  letter-spacing: -0.01em;
}

.tagline {
  font-size: 1.15rem;
  color: var(--muted);
  margin: 0 0 1.1rem;
  max-width: 40em;
}

.bio { max-width: 42em; margin: 0 0 1.1rem; }
.bio p { margin: 0 0 0.9rem; }

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.9rem;
  font-size: 0.95rem;
  margin-bottom: 2.4rem;
}
.contact-links a { text-decoration: none; }
.contact-links a:hover { text-decoration: underline; }

section { margin-bottom: 2.4rem; }

h2 {
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 600;
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.item { margin-bottom: 1.3rem; }
.item:last-child { margin-bottom: 0; }

.item-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.25rem 1rem;
}

.item-title { font-weight: 600; }
.item-meta { color: var(--muted); font-size: 0.92rem; white-space: nowrap; }
.item-org { color: var(--muted); font-size: 0.95rem; margin-top: 0.1rem; }
.item-desc { margin-top: 0.35rem; }
.item-links { margin-top: 0.35rem; font-size: 0.92rem; }
.item-links a { margin-right: 0.9rem; text-decoration: none; }
.item-links a:hover { text-decoration: underline; }

.exp-list .item-head { margin-bottom: 0; }

.more-link { font-size: 0.95rem; }

footer.site {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1rem;
}
footer.site a { color: var(--muted); }

.pub-group { margin-bottom: 1.8rem; }
.pub-group h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 600;
  margin: 0 0 0.8rem;
}
.pub-entry { margin-bottom: 1rem; }
.pub-entry .venue { color: var(--muted); }
.pub-entry .links { font-size: 0.9rem; margin-top: 0.15rem; }
.pub-entry .links a { margin-right: 0.8rem; text-decoration: none; }
.pub-entry .links a:hover { text-decoration: underline; }

.cv-card {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.1rem;
  margin-bottom: 0.9rem;
}
.cv-card .item-title { display: block; margin-bottom: 0.25rem; }
.cv-card p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.pdf-embed {
  width: 100%;
  height: 80vh;
  border: 1px solid var(--border);
  border-radius: 6px;
}
@media (max-width: 700px) {
  .pdf-embed { height: 70vh; }
}

@media (max-width: 480px) {
  body { font-size: 16px; }
  h1 { font-size: 1.6rem; }
  header.site { flex-direction: column; align-items: flex-start; }
}