/* Shared styles for all pages.
   Palette: crisp white, deep-blue bar, bright blue links. */
:root {
  --bg: #ffffff;
  --text: #2b3036;
  --muted: #69717a;
  --rule: #e3e6ea;
  --bar: #023e8a;          /* deep blue top bar */
  --link: #0077b6;         /* bright blue links */
  --blue-soft: #eaf3fb;    /* pale blue for highlight cards */
  --blue-line: #cfe2f3;    /* light blue rules and rings */
  --sans: 'Source Sans 3', 'Source Sans Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--sans); font-size: 17.5px; line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
::selection { background: var(--blue-soft); }

/* ── Top bar ── */
.bar { background: var(--bar); position: sticky; top: 0; z-index: 10; }
.bar .inner { max-width: 1080px; margin: 0 auto; padding: 0 24px; height: 58px; display: flex; align-items: center; gap: 32px; }
.bar .brand { color: #fff; font-size: 20px; font-weight: 500; white-space: nowrap; }
.bar .brand:hover { text-decoration: none; }
.bar ul { list-style: none; display: flex; flex-wrap: wrap; gap: 4px 22px; margin: 0; padding: 0; }
.bar ul a { color: rgba(255,255,255,.82); font-size: 16px; white-space: nowrap; }
.bar ul a:hover { color: #fff; text-decoration: none; }
.bar ul a.on { color: #fff; box-shadow: inset 0 -2px 0 #fff; padding-bottom: 3px; }

/* ── Home: two columns ── */
.home { max-width: 1000px; margin: 0 auto; padding: 56px 24px 80px; display: grid; grid-template-columns: 340px 1fr; }
.home .side { text-align: center; padding-right: 40px; }
.home .side .inner { position: sticky; top: 100px; }
.photo { width: 240px; height: 240px; border-radius: 50%; object-fit: cover; margin: 0 auto 22px; display: grid; place-items: center;
         background: var(--blue-soft); color: var(--bar); font-size: 64px; font-weight: 300; box-shadow: 0 0 0 4px #fff, 0 0 0 6px var(--blue-line); }
.home h1 { font-size: 34px; font-weight: 600; margin: 0 0 4px; line-height: 1.2; }
.home .role { color: var(--muted); margin: 0 0 16px; font-size: 17px; line-height: 1.45; }
.badge { display: inline-block; background: var(--blue-soft); color: var(--bar); font-size: 14.5px; font-weight: 600; padding: 3px 14px; border-radius: 999px; margin-bottom: 18px; }
.icons { display: flex; justify-content: center; gap: 18px; }
.icons a { color: var(--bar); display: inline-flex; align-items: center; gap: 6px; font-size: 15.5px; }
.icons svg { width: 18px; height: 18px; }
.home .main { border-left: 1px solid var(--rule); padding-left: 40px; }
.home .main > p:first-child { margin-top: 0; }

/* ── Inner pages ── */
.page { max-width: 780px; margin: 0 auto; padding: 52px 24px 80px; }
.page > h1 { font-size: 36px; font-weight: 600; margin: 0 0 8px; }
.lead { color: var(--muted); font-size: 18px; margin: 0 0 8px; }

h2 { font-size: 25px; font-weight: 600; margin: 44px 0 18px; padding-bottom: 6px; border-bottom: 2px solid var(--blue-soft); }
h2:first-child { margin-top: 0; }
p { margin: 0 0 14px; }

.jmp { background: var(--blue-soft); border-left: 4px solid var(--link); border-radius: 0 10px 10px 0; padding: 20px 24px; margin: 6px 0 8px; }
.jmp .label { font-size: 13px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--bar); margin-bottom: 6px; }
.jmp .title { font-size: 19.5px; font-weight: 600; line-height: 1.35; margin-bottom: 10px; }
.jmp p { margin: 0; font-size: 16.5px; }

.paper { margin-bottom: 22px; }
.paper .title { font-weight: 600; font-size: 18px; line-height: 1.4; }
.paper .title a { color: var(--text); }
.paper .title a:hover { color: var(--link); }
.paper .meta { color: var(--muted); font-size: 16px; }
details { margin-top: 2px; }
summary { cursor: pointer; font-size: 15px; color: var(--link); list-style: none; display: inline-block; }
summary::-webkit-details-marker { display: none; }
summary::before { content: "More ▸"; }
details[open] summary::before { content: "Less ▾"; }
details .abs { margin-top: 6px; color: var(--muted); font-size: 16px; }

ul.plain { margin: 0; padding-left: 20px; }
ul.plain li { margin-bottom: 6px; }
ul.plain li::marker { color: var(--link); }

.list { list-style: none; margin: 0; padding: 0; }
.list li { display: flex; justify-content: space-between; gap: 16px; padding: 9px 0; border-bottom: 1px solid var(--rule); }
.list .when { color: var(--muted); white-space: nowrap; }
.note { color: var(--muted); font-size: 16px; margin-top: 14px; }

.refs { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 18px 28px; font-size: 16px; line-height: 1.45; }
.refs strong { display: block; font-weight: 600; }
.refs span { color: var(--muted); display: block; }

footer { text-align: center; padding: 28px 24px 44px; font-size: 14px; color: var(--muted); border-top: 1px solid var(--rule); }

/* ── Teaching: courses with collapsible feedback ── */
.course { padding: 12px 0; border-bottom: 1px solid var(--rule); }
.course-row { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.course-row .when { color: var(--muted); white-space: nowrap; margin-left: auto; }
.fb-toggle { font: inherit; font-size: 14.5px; color: var(--link); background: var(--blue-soft); border: none; border-radius: 999px; padding: 1px 12px; cursor: pointer; }
.fb-toggle::after { content: " ▸"; }
.fb-toggle[aria-expanded="true"]::after { content: " ▾"; }
.fb-toggle:hover { background: var(--blue-line); }
.fb-body { margin-top: 12px; }
.fb-body .stat { font-size: 15.5px; color: var(--muted); margin-bottom: 10px; }
.fb-body .stat strong { color: var(--bar); }
.fb-body blockquote { margin: 0 0 10px; padding: 8px 14px; background: var(--blue-soft); border-left: 3px solid var(--link); border-radius: 0 6px 6px 0; font-size: 16px; font-style: italic; }
.fb-body blockquote::before { content: "“"; } .fb-body blockquote::after { content: "”"; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 14px; }
.stats div { background: var(--blue-soft); border-radius: 8px; padding: 12px 14px; }
.stats b { display: block; font-size: 26px; font-weight: 600; color: var(--bar); line-height: 1.2; }
.stats span { font-size: 14.5px; color: var(--muted); }
@media (max-width: 560px) { .stats { grid-template-columns: 1fr; } }

/* ── CV page ── */
.cv-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; margin-bottom: 18px; }
.cv-head h1 { font-size: 36px; font-weight: 600; margin: 0; }
.cv-frame { width: 100%; height: calc(100vh - 190px); min-height: 600px; border: 1px solid var(--rule); border-radius: 8px; background: #f6f7f9; }
.page.cv { max-width: 960px; padding-top: 36px; padding-bottom: 40px; }

@media (max-width: 760px) {
  .bar .inner { gap: 18px; }
  .bar .brand { display: none; }
  .home { grid-template-columns: 1fr; padding-top: 36px; }
  .home .side { padding: 0 0 28px; }
  .home .main { border-left: none; padding-left: 0; border-top: 1px solid var(--rule); padding-top: 28px; }
  .photo { width: 180px; height: 180px; font-size: 48px; }
}