/* Academic homepage — layout inspired by the ColorMag theme (elsa-dupraz.fr),
   publication cards inspired by luost.me/academic-homepage. */

:root {
  --accent: #4682b4;
  --accent-dark: #36648b;
  --bg: #ffffff;
  --bg-soft: #f4f6f8;
  --text: #444444;
  --text-strong: #222222;
  --muted: #777777;
  --border: #e3e6ea;
  --nav-bg: #232323;
  --nav-text: #ffffff;
  --footer-bg: #232323;
  --footer-text: #b1b6b6;
  --card-bg: #ffffff;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, .06), 0 6px 18px rgba(0, 0, 0, .05);
  --thumb-bg: #ffffff;
  --me-bg: rgba(70, 130, 180, .12);
  --tint: #e8f1f8;
  --journal: #2e8b57;
  --conference: #4682b4;
  --preprint: #c77d12;
  --code-bg: #f6f8fa;
  color-scheme: light;
}

/* dark theme, enabled via the toggle button */
:root[data-theme="dark"] {
  --accent: #6fa3cf;
  --accent-dark: #9cc0e0;
  --bg: #17191c;
  --bg-soft: #1f2226;
  --text: #cfd3d8;
  --text-strong: #eef0f2;
  --muted: #9aa1a9;
  --border: #2d3238;
  --nav-bg: #0f1113;
  --footer-bg: #0f1113;
  --footer-text: #8d949b;
  --card-bg: #1f2226;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, .4);
  --thumb-bg: #f3f4f6;
  --me-bg: rgba(111, 163, 207, .18);
  --tint: #1d2833;
  --journal: #5cc08a;
  --conference: #5b93c4;
  --preprint: #e0a33e;
  --code-bg: #121417;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 16px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 18.5px/1.45 "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }

.wrap { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 24px; }

.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- header & nav ---------- */

.site-header { background: var(--bg); }
.site-title { margin: 0; padding: 26px 0 22px; font-size: 40px; line-height: 1.2; font-weight: 400; }
.site-title a { color: var(--accent); }
.site-title a:hover { text-decoration: none; color: var(--accent-dark); }

.main-nav { background: var(--nav-bg); border-top: 4px solid var(--accent); }
.main-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; }
.main-nav a {
  display: block;
  padding: 11px 13px;
  color: var(--nav-text);
  font-size: 16.5px;
  font-weight: 600;
  letter-spacing: .02em;
}
.main-nav a:hover, .main-nav .current a { background: var(--accent); color: #fff; text-decoration: none; }

.nav-toggle { display: none; }

.main-nav .wrap { display: flex; align-items: center; }
.theme-toggle, .search-toggle {
  margin-left: auto; flex: none;
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; padding: 0;
  background: none; border: 0; border-radius: 3px; cursor: pointer; color: var(--nav-text);
}
.theme-toggle:hover, .search-toggle:hover { background: var(--accent); color: #fff; }
.search-toggle + .theme-toggle { margin-left: 4px; }
.theme-toggle .moon { display: none; }
.theme-toggle .sun { display: block; }
:root[data-theme="dark"] .theme-toggle .moon { display: block; }
:root[data-theme="dark"] .theme-toggle .sun { display: none; }

@media (max-width: 720px) {
  .site-title { font-size: 32px; padding: 18px 0 16px; }
  .main-nav .wrap { padding: 0; flex-wrap: wrap; }
  .theme-toggle { margin-right: 8px; }
  .search-box { margin-top: 16px; max-height: calc(100vh - 32px); }
  .nav-toggle {
    display: flex; align-items: center; justify-content: center;
    width: 48px; height: 44px; background: none; border: 0; cursor: pointer; color: #fff;
  }
  .nav-toggle .bars, .nav-toggle .bars::before, .nav-toggle .bars::after {
    display: block; width: 20px; height: 2px; background: currentColor; position: relative; content: "";
  }
  .nav-toggle .bars::before { position: absolute; top: -6px; }
  .nav-toggle .bars::after { position: absolute; top: 6px; }
  .main-nav ul { display: none; flex-direction: column; order: 3; width: 100%; }
  .main-nav.open ul { display: flex; }
  .main-nav a { padding: 12px 24px; border-top: 1px solid rgba(255, 255, 255, .07); }
}

/* ---------- main ---------- */

.site-main { flex: 1; padding-top: 30px; padding-bottom: 56px; }

.page-title { margin: 0 0 6px; font-size: 32px; font-weight: 400; color: var(--text-strong); line-height: 1.3; }
.headline { margin: 0 0 26px; font-size: 23px; font-weight: 600; color: var(--text-strong); line-height: 1.4; }
.lead { margin: 0 0 22px; color: var(--muted); }
.lead p { margin: 0; }

h2 { color: var(--text-strong); }
p { margin: 0 0 14px; }

.clearfix::after { content: ""; display: table; clear: both; }

/* ---------- home ---------- */

.intro { text-align: justify; hyphens: auto; }
.portrait {
  float: left;
  width: 220px; height: 220px;
  object-fit: cover;
  margin: 4px 30px 16px 0;
  border-radius: 2px;
}
.social { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.social a {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text);
  font-size: 16.5px;
}
.social a:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.social svg { flex: none; }

.news { margin-top: 40px; }
.news h2, .year {
  font-size: 22px; font-weight: 600; margin: 0 0 14px; padding-bottom: 6px;
  border-bottom: 2px solid var(--accent); display: inline-block;
}
.news-list {
  list-style: none; margin: 0; padding: 4px 16px;
  max-height: 380px; overflow-y: auto;
  border: 1px solid var(--border); border-left: 4px solid var(--accent); background: var(--tint); border-radius: 0 3px 3px 0;
}
.news-list li { display: flex; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.news-list li:last-child { border-bottom: 0; }
.news-date { flex: none; width: 72px; font-weight: 600; color: var(--accent); font-variant-numeric: tabular-nums; }

@media (max-width: 600px) {
  .portrait { float: none; display: block; margin: 0 auto 20px; width: 180px; height: 180px; }
  .intro { text-align: left; }
  .news-list li { flex-direction: column; gap: 2px; }
}

/* ---------- publications ---------- */

.pub-layout { display: grid; grid-template-columns: minmax(0, 1fr) 150px; gap: 32px; align-items: start; }
.year-nav { position: sticky; top: 24px; }
.year-nav ul { list-style: none; margin: 52px 0 0; padding: 0; }
.year-nav a {
  display: block; padding: 7px 14px; margin-bottom: 4px;
  border-radius: 4px; color: var(--accent); font-weight: 600;
}
.year-nav a:hover { background: var(--bg-soft); text-decoration: none; }
.year-nav a.active { background: var(--accent); color: #fff; }

.pub-filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.chip {
  font: inherit; font-size: 16px; font-weight: 600;
  padding: 5px 13px; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
}
.chip span { color: var(--muted); font-weight: 400; margin-left: 2px; }
.chip:hover { border-color: var(--accent); }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip.active span { color: rgba(255, 255, 255, .8); }

.pub-year { margin-bottom: 36px; }
.pub-year[hidden] { display: none; }
.year { font-size: 26px; }

/* one shared block per year, papers separated by dividers */
.pub-group {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--card-shadow);
  overflow: hidden;
}
.pub-card {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 22px;
  padding: 20px;
}
.pub-card:not([hidden]) ~ .pub-card { border-top: 1px solid var(--border); }
.pub-card[hidden] { display: none; }

.pub-thumb {
  display: block;
  aspect-ratio: 16 / 10;
  border-radius: 4px;
  overflow: hidden;
  background: var(--thumb-bg);
  border: 1px solid var(--border);
  align-self: start;
}
.pub-thumb img { width: 100%; height: 100%; object-fit: contain; display: block; transition: transform .25s ease; }
.pub-card:hover .pub-thumb img { transform: scale(1.04); }
.pub-placeholder { width: 100%; height: 100%; display: block; }

.pub-title { margin: 0 0 4px; font-size: 19px; line-height: 1.3; font-weight: 600; }
.pub-title a { color: var(--text-strong); }
.pub-title a:hover { color: var(--accent); }
.pub-authors { margin: 0 0 2px; font-size: 17px; }
.pub-authors .me { font-weight: 700; color: var(--text-strong); text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 3px; }
.pub-venue { margin: 0 0 6px; font-size: 17px; color: var(--muted); }
.pub-summary { margin: 0 0 10px; font-size: 17px; }

.badge {
  display: inline-block; vertical-align: 1px;
  margin-left: 6px; padding: 1px 8px;
  border-radius: 3px; font-size: 14.5px; font-weight: 700; font-style: normal;
  color: #fff; background: var(--conference); letter-spacing: .02em;
}
.badge.journal { background: var(--journal); }
.badge.preprint { background: var(--preprint); }

.pub-links { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.btn {
  font: inherit; font-size: 15.5px; font-weight: 600; line-height: 1.5;
  padding: 2px 10px; border-radius: 3px; cursor: pointer;
  border: 1px solid var(--accent); background: transparent; color: var(--accent);
}
.btn:hover, .btn[aria-expanded="true"] { background: var(--accent); color: #fff; text-decoration: none; }
.btn.small { font-size: 14.5px; padding: 0 8px; margin-left: 6px; }
.soon { font-size: 15.5px; color: var(--muted); font-style: italic; }

.pub-panel {
  margin-top: 12px; padding: 12px 14px;
  background: var(--tint); border-left: 4px solid var(--accent); border-radius: 0 4px 4px 0;
  font-size: 17px; text-align: justify; hyphens: auto;
}
.pub-panel p { margin: 0; }
.pub-panel.bib { position: relative; background: var(--code-bg); }
.pub-panel pre { margin: 0; overflow-x: auto; font: 14.5px/1.45 ui-monospace, SFMono-Regular, Menlo, monospace; white-space: pre; text-align: left; }
.copy {
  position: absolute; top: 8px; right: 8px;
  font: inherit; font-size: 14.5px; padding: 1px 8px; cursor: pointer;
  border: 1px solid var(--border); background: var(--bg); color: var(--text); border-radius: 3px;
}

@media (max-width: 900px) {
  .pub-layout { grid-template-columns: minmax(0, 1fr); }
  .year-nav { display: none; }
}
@media (max-width: 600px) {
  .pub-card { grid-template-columns: minmax(0, 1fr); gap: 14px; padding: 14px; }
  .pub-thumb { aspect-ratio: 2 / 1; }
}

/* ---------- Markdown pages (talks, supervision, PhD, ...) ---------- */

.prose h2 {
  font-size: 26px; font-weight: 600; margin: 28px 0 10px; padding-bottom: 6px;
  border-bottom: 2px solid var(--accent); display: inline-block;
}
.prose > p:first-child { color: var(--muted); }
.prose ul { list-style: none; margin: 0 0 8px; padding: 0; }
.prose ul li { padding: 8px 0 8px 16px; border-left: 2px solid var(--border); margin-left: 2px; color: var(--muted); }
.prose ul li:hover { border-left-color: var(--accent); }
.prose ul li > strong:first-child { display: block; color: var(--text-strong); font-weight: 600; }
/* "- **Name** *level* ..." renders the level as a small tag */
.prose ul li > strong:first-child + em {
  display: inline-block; margin-right: 4px; padding: 0 8px;
  font-size: 15px; font-style: normal; font-weight: 600; border-radius: 3px;
  background: var(--me-bg); color: var(--accent-dark);
}
.prose figure { margin: 28px 0 0; padding: 16px; background: #fff; border: 1px solid var(--border); border-radius: 6px; }
.prose figure img { width: 100%; height: auto; display: block; }
.prose figcaption { margin-top: 8px; font-size: 16px; color: #666; text-align: center; }
.prose img { max-width: 100%; height: auto; }

/* PhD page: bold title, thesis title as the headline */
.page-phd .page-title strong { font-weight: 700; }
.page-phd .prose h2 + p { color: var(--muted); }
.page-phd .prose h2 { border: 0; display: block; font-size: 23px; margin: 0 0 6px; padding: 0; }

/* ---------- footer ---------- */

.site-footer { background: var(--footer-bg); color: var(--footer-text); font-size: 16px; padding: 18px 0; }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 20px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; }
.site-footer a { color: var(--footer-text); }
.site-footer a:hover { color: #fff; }

/* ---------- search ---------- */

.search-box {
  width: min(640px, calc(100vw - 32px)); max-height: min(560px, calc(100vh - 96px));
  margin: 72px auto auto; padding: 0;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg); color: var(--text);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .3);
  flex-direction: column; overflow: hidden;
}
.search-box[open] { display: flex; }
.search-box::backdrop { background: rgba(10, 14, 20, .55); }
.search-field { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--border); color: var(--muted); }
.search-field input {
  flex: 1; min-width: 0; border: 0; outline: 0; background: none;
  font: inherit; font-size: 19px; color: var(--text-strong);
}
.search-field input::-webkit-search-cancel-button { display: none; }
.search-field kbd {
  font: 12.5px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  padding: 4px 6px; border: 1px solid var(--border); border-radius: 4px; color: var(--muted);
}
.search-results { list-style: none; margin: 0; padding: 6px; overflow-y: auto; }
.search-results:empty { display: none; }
.search-results a { display: block; padding: 9px 12px; border-radius: 5px; color: var(--text); }
.search-results a:hover { text-decoration: none; }
.search-results .sel a { background: var(--tint); }
.search-results .r-title { display: block; color: var(--text-strong); font-weight: 600; line-height: 1.3; }
.search-results .r-meta { display: block; font-size: 14.5px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.search-results .r-snip { display: block; font-size: 15px; color: var(--muted); margin-top: 2px; }
.search-results .r-tag {
  display: inline-block; margin-right: 6px; padding: 0 6px; vertical-align: 1px;
  font-size: 12.5px; font-weight: 700; letter-spacing: .03em; text-transform: uppercase;
  border-radius: 3px; background: var(--me-bg); color: var(--accent-dark);
}
.search-results mark { background: rgba(240, 160, 75, .35); color: inherit; border-radius: 2px; }
.search-results .none { padding: 14px 12px; color: var(--muted); }

.pub-card:target { background: var(--tint); transition: background 1s; }

/* ---------- figure preview (lightbox) ---------- */

button.pub-thumb { padding: 0; font: inherit; width: 100%; cursor: zoom-in; }
button.pub-thumb:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.lightbox {
  border: 0; padding: 16px; border-radius: 8px;
  max-width: min(1400px, 94vw); max-height: 92vh;
  background: #fff; color: #333;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .35);
}
.lightbox::backdrop { background: rgba(10, 14, 20, .78); }
.lightbox img { display: block; max-width: 100%; max-height: calc(92vh - 90px); margin: 0 auto; object-fit: contain; }
.lightbox-caption { margin: 10px 40px 0; text-align: center; font-size: 16px; font-weight: 600; }
.lightbox-close {
  position: absolute; top: 6px; right: 8px;
  width: 36px; height: 36px; border: 0; border-radius: 50%;
  background: rgba(0, 0, 0, .06); color: #333; font-size: 24px; line-height: 1; cursor: pointer;
}
.lightbox-close:hover { background: var(--accent); color: #fff; }