/* ============================================================
   Immo Schott — personal site
   Modern academic style. Light/dark aware.
   ============================================================ */

:root {
  --accent:        #9c2b23;   /* muted brick-red, echoing the CV accent */
  --accent-soft:   #b8443c;
  --ink:           #1b1b1f;
  --ink-soft:      #4a4a52;
  --ink-faint:     #767680;
  --bg:            #fbfaf7;   /* warm off-white */
  --bg-elev:       #ffffff;
  --line:          #e7e4dc;
  --line-strong:   #d7d3c8;
  --tag-bg:        #f1ede4;
  --maxw:          860px;
  --radius:        12px;
  --shadow:        0 1px 2px rgba(20,20,25,.04), 0 8px 24px rgba(20,20,25,.05);
  --font-serif:    "Newsreader", Georgia, "Times New Roman", serif;
  --font-sans:     "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent:      #e8837b;
    --accent-soft: #f0a19a;
    --ink:         #ece9e3;
    --ink-soft:    #b6b2aa;
    --ink-faint:   #85817a;
    --bg:          #16151a;
    --bg-elev:     #1e1d23;
    --line:        #2c2b32;
    --line-strong: #3a3941;
    --tag-bg:      #26252c;
    --shadow:      0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35);
  }
}

/* ---------- base ---------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-soft); text-decoration: underline; text-underline-offset: 2px; }

h1, h2, h3 { font-family: var(--font-serif); font-weight: 500; line-height: 1.2; }

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px 24px;
}
.nav-name {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
  text-decoration: none;
}
.nav-name:hover { color: var(--accent); text-decoration: none; }
.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 18px;
}
.nav a.nav-link {
  color: var(--ink-soft);
  font-size: .84rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
}
.nav a.nav-link:hover { color: var(--accent); }
@media (max-width: 680px) {
  .nav-inner { padding: 10px 18px; }
  .nav a.nav-link { font-size: .78rem; }
}

/* ---------- layout ---------- */
main { max-width: var(--maxw); margin: 0 auto; padding: 0 24px 96px; }
section { padding-top: 56px; }

.section-head {
  font-size: .82rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
  font-family: var(--font-sans);
  font-weight: 600;
  margin: 0 0 22px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

/* ---------- hero ---------- */
.hero {
  padding-top: 64px;
  display: grid;
  grid-template-columns: 168px 1fr;
  gap: 36px;
  align-items: center;
}
.hero img {
  width: 168px;
  height: 168px;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: var(--shadow);
  border: 3px solid var(--bg-elev);
}
.hero h1 {
  margin: 0 0 6px;
  font-size: 2.5rem;
  letter-spacing: -.01em;
}
.hero .role { color: var(--ink); font-size: 1.06rem; margin: 0 0 2px; }
.hero .affil { color: var(--ink-soft); margin: 0 0 14px; font-size: 1.0rem; }
.hero .interests { color: var(--ink-soft); font-size: .97rem; margin: 0 0 18px; }
.hero .interests b { color: var(--ink); font-weight: 600; }

.links { display: flex; flex-wrap: wrap; gap: 10px; }
.links a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: .9rem;
  color: var(--ink);
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  padding: 7px 14px;
  border-radius: 999px;
  transition: border-color .15s, color .15s, transform .15s;
}
.links a:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; transform: translateY(-1px); }

@media (max-width: 620px) {
  .hero { grid-template-columns: 1fr; text-align: center; gap: 20px; padding-top: 40px; }
  .hero img { margin: 0 auto; width: 140px; height: 140px; }
  .hero h1 { font-size: 2rem; }
  .links { justify-content: center; }
}

/* ---------- prose ---------- */
.prose p { color: var(--ink-soft); margin: 0 0 16px; }
.prose p:last-child { margin-bottom: 0; }

/* ---------- news ---------- */
.news-list { list-style: none; margin: 0; padding: 0; }
.news-list li {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 4px 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}
.news-list li:last-child { border-bottom: none; }
.news-date {
  color: var(--accent);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .03em;
  text-transform: uppercase;
  padding-top: 2px;
  font-variant-numeric: tabular-nums;
}
.news-item { color: var(--ink-soft); }
.news-item em { color: var(--ink); font-style: italic; }
@media (max-width: 620px) {
  .news-list li { grid-template-columns: 1fr; gap: 2px; }
  .news-date { font-size: .74rem; }
}

/* ---------- publication / paper items ---------- */
.pub {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 2.2rem 1fr;
  gap: 4px 14px;
}
.pub:last-child { border-bottom: none; }
.pub .num {
  font-family: var(--font-serif);
  color: var(--ink-faint);
  font-size: 1.05rem;
  padding-top: 1px;
}
.pub .body { grid-column: 2; }
.pub.nonum { grid-template-columns: 1fr; }
.pub.nonum .body { grid-column: 1; }

.pub .title {
  font-family: var(--font-serif);
  font-size: 1.16rem;
  color: var(--ink);
  font-weight: 500;
  line-height: 1.3;
}
.pub .authors { color: var(--ink-soft); font-size: .95rem; margin-top: 3px; }
.pub .venue { color: var(--ink-soft); font-size: .93rem; margin-top: 3px; }
.pub .venue em, .pub .venue .journal { color: var(--ink); font-style: normal; font-weight: 600; }

.status {
  display: inline-block;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .03em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--tag-bg);
  border: 1px solid var(--line-strong);
  padding: 2px 9px;
  border-radius: 6px;
  margin-top: 8px;
}

.pub-links { margin-top: 9px; display: flex; flex-wrap: wrap; gap: 8px; }
.pub-links a {
  font-size: .8rem;
  color: var(--ink-soft);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 3px 10px;
  transition: color .15s, border-color .15s;
}
.pub-links a:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }

/* PDF = primary download, visually dominant */
.pub-links a.pl-primary {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}
.pub-links a.pl-primary:hover {
  background: var(--accent-soft);
  border-color: var(--accent-soft);
  color: #fff;
}
.pub-note { font-size: .8rem; color: var(--ink-faint); font-style: italic; align-self: center; }

/* Press / coverage — clearly separated from access links */
.pub-coverage {
  margin-top: 7px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  font-size: .8rem;
}
.pub-coverage .cov-label {
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: .09em;
  font-size: .66rem;
  font-weight: 600;
}
.pub-coverage a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px dotted var(--line-strong);
  padding-bottom: 1px;
}
.pub-coverage a:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }

@media (max-width: 620px) {
  .pub { grid-template-columns: 1.6rem 1fr; }
  .pub .title { font-size: 1.08rem; }
}

/* ---------- teaching ---------- */
.teach-block { margin-bottom: 24px; }
.teach-block:last-child { margin-bottom: 0; }
.teach-block h3 { margin: 0 0 4px; font-size: 1.14rem; color: var(--ink); }
.teach-block .place { color: var(--ink-faint); font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 10px; }
.course-list { list-style: none; margin: 0; padding: 0; }
.course-list li { color: var(--ink-soft); padding: 4px 0; border-bottom: 1px dashed var(--line); }
.course-list li:last-child { border-bottom: none; }
.course-list .code { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }

/* ---------- conference ---------- */
.conf-lead { color: var(--ink-soft); margin: 0 0 22px; }
.conf-list { list-style: none; margin: 0; padding: 0 0 0 22px; border-left: 2px solid var(--line); }
.conf-list li {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}
.conf-list li:last-child { border-bottom: 1px solid var(--line); }
.conf-top { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; }
.conf-ed {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--ink);
  font-size: 1.02rem;
}
.conf-loc { color: var(--ink-soft); font-size: .9rem; }
.conf-kn { color: var(--ink-soft); font-size: .9rem; margin: 4px 0 8px; }
.conf-prog {
  display: inline-block;
  font-size: .82rem;
  color: var(--ink-soft);
  border-bottom: 1px dotted var(--line-strong);
  padding-bottom: 1px;
}
.conf-prog:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }

/* ---------- bibtex button + modal ---------- */
.bib-btn {
  font-family: var(--font-sans);
  font-size: .8rem;
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 3px 10px;
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
.bib-btn:hover { color: var(--accent); border-color: var(--accent); }

.modal { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(20,20,25,.55); backdrop-filter: blur(2px); }
.modal-card {
  position: relative;
  width: min(640px, 100%);
  max-height: 82vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-sans);
  font-size: .82rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}
.modal-close {
  background: none; border: none; cursor: pointer;
  font-size: 1.5rem; line-height: 1; color: var(--ink-faint);
  padding: 0 4px;
}
.modal-close:hover { color: var(--ink); }
#bibText {
  margin: 0;
  padding: 18px;
  overflow: auto;
  font-family: "SF Mono", "Consolas", "Inconsolata", ui-monospace, monospace;
  font-size: .86rem;
  line-height: 1.55;
  color: var(--ink);
  white-space: pre;
  tab-size: 2;
}
.modal-actions {
  display: flex;
  gap: 10px;
  padding: 14px 18px;
  border-top: 1px solid var(--line);
}
.modal-actions button {
  font-family: var(--font-sans);
  font-size: .88rem;
  cursor: pointer;
  border-radius: 8px;
  padding: 8px 16px;
  border: 1px solid var(--line-strong);
  background: var(--bg);
  color: var(--ink);
  transition: border-color .15s, color .15s, background .15s;
}
.modal-actions button:hover { border-color: var(--accent); color: var(--accent); }
#bibDownload { background: var(--accent); color: #fff; border-color: var(--accent); }
#bibDownload:hover { background: var(--accent-soft); border-color: var(--accent-soft); color: #fff; }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--line);
  padding: 28px 24px 40px;
  text-align: center;
  color: var(--ink-faint);
  font-size: .85rem;
}
footer a { color: var(--ink-soft); }