/* ---------------------------------------------------------------
   Nikola Milosevic — academic homepage
   Hand-written, no framework. Two typefaces, one accent, lots of air.
   --------------------------------------------------------------- */

:root {
  --ink:        #16181d;
  --ink-soft:   #4a4f57;
  --ink-faint:  #7c828c;
  --rule:       #e3e5e8;
  --rule-soft:  #eef0f2;
  --bg:         #fbfbfa;
  --accent:     #0f6e56;
  --accent-dim: #0a5340;
  --measure:    40rem;

  --serif: "Spectral", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink:       #e8e8e4;
    --ink-soft:  #b1b5bb;
    --ink-faint: #838890;
    --rule:      #2a2d33;
    --rule-soft: #212429;
    --bg:        #131518;
    --accent:    #6cc3a5;
    --accent-dim:#8fd4bb;
  }
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  font-feature-settings: "kern" 1;
  -webkit-font-smoothing: antialiased;
}

/* ---- layout ---- */
.wrap {
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 1.75rem;
}

main { padding-bottom: 6rem; }

/* ---- masthead ---- */
.masthead {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  padding: 2.25rem 0 0;
}

.masthead .name {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
}

.masthead nav {
  margin-left: auto;
  display: flex;
  align-items: baseline;
  gap: 1.4rem;
  font-size: 0.85rem;
}

.masthead nav a {
  color: var(--ink-faint);
  text-decoration: none;
  transition: color .15s;
}

.masthead nav a:hover { color: var(--accent); }
.masthead nav a[aria-current="page"] { color: var(--ink); }

/* language switch: two letters, a hairline between them */
.lang {
  display: inline-flex;
  align-items: baseline;
  gap: .45rem;
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .09em;
  text-transform: uppercase;
}
.lang span { color: var(--ink); }
.lang a    { color: var(--ink-faint); text-decoration: none; }
.lang a:hover { color: var(--accent); }
.lang .sep { color: var(--rule); }
.lang .off { color: var(--rule); cursor: default; }

/* ---- hero ---- */
.hero { padding: 4.5rem 0 0; }

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.1rem, 5.2vw, 2.9rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.017em;
  margin: 0 0 .6rem;
}

.hero .role {
  font-size: .95rem;
  color: var(--ink-soft);
  margin: 0 0 2.25rem;
}

.hero .role a { color: var(--ink-soft); text-decoration: none; border-bottom: 1px solid var(--rule); }
.hero .role a:hover { color: var(--accent); border-color: var(--accent); }

.bio { max-width: 40rem; }

.bio p {
  margin: 0 0 1.15rem;
  color: var(--ink-soft);
}

.bio p:first-child {
  font-size: 1.16rem;
  line-height: 1.55;
  color: var(--ink);
}

.bio a { color: var(--accent); text-decoration: none; border-bottom: 1px solid color-mix(in srgb, var(--accent) 28%, transparent); }
.bio a:hover { border-bottom-color: var(--accent); }

/* ---- contact row ---- */
.contact {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem 1.35rem;
  margin: 2rem 0 0;
  padding: 1.25rem 0 0;
  border-top: 1px solid var(--rule);
  font-size: .85rem;
}

.contact a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color .15s;
}
.contact a:hover { color: var(--accent); }

/* ---- sections ---- */
section { margin-top: 4.5rem; }

.sec-head {
  font-family: var(--sans);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 1.6rem;
  padding-bottom: .55rem;
  border-bottom: 1px solid var(--rule);
}

/* ---- CV-style rows (education, awards) ---- */
.rows { display: grid; gap: 1.15rem; }

.row-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .3rem 1.5rem;
  align-items: baseline;
}

.row-item .what { font-weight: 500; }
.row-item .when {
  font-size: .82rem;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.row-item .where {
  grid-column: 1 / -1;
  font-size: .88rem;
  color: var(--ink-soft);
  margin-top: -.15rem;
}

/* ---- news ---- */
.news { display: grid; gap: 1.05rem; }

.news-item {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1rem;
  align-items: baseline;
  font-size: .93rem;
}

.news-item time {
  font-size: .8rem;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}

.news-item p { margin: 0; color: var(--ink-soft); }
.news-item strong { color: var(--ink); font-weight: 600; }

/* ---- publications ---- */
.year {
  font-family: var(--sans);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--ink-faint);
  margin: 2.75rem 0 1.1rem;
  font-variant-numeric: tabular-nums;
}
.year:first-of-type { margin-top: 0; }

.pub {
  padding: 1.35rem 0;
  border-top: 1px solid var(--rule-soft);
}
.pub:last-child { border-bottom: 1px solid var(--rule-soft); }

.pub h3 {
  font-family: var(--serif);
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.008em;
  margin: 0 0 .35rem;
}

.pub .authors { font-size: .88rem; color: var(--ink-soft); margin: 0 0 .2rem; }
.pub .authors .me { color: var(--ink); font-weight: 600; }

.pub .venue {
  font-size: .85rem;
  color: var(--ink-faint);
  margin: 0 0 .75rem;
}
.pub .venue em { font-style: italic; }

/* link row — plain text separated by hairlines, no pills */
.pub .links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35rem .8rem;
  font-size: .81rem;
}

.pub .links a,
.pub .links button {
  color: var(--ink-soft);
  text-decoration: none;
  border: 0;
  background: none;
  padding: 0;
  font: inherit;
  cursor: pointer;
  transition: color .15s;
}
.pub .links a:hover,
.pub .links button:hover { color: var(--accent); }

.pub .links .dot { color: var(--rule); }

.pub details { margin-top: .8rem; }
.pub details > summary {
  list-style: none;
  cursor: pointer;
  font-size: .81rem;
  color: var(--ink-soft);
  transition: color .15s;
}
.pub details > summary::-webkit-details-marker { display: none; }
.pub details > summary:hover { color: var(--accent); }
.pub details > summary::after { content: " ↓"; font-size: .9em; }
.pub details[open] > summary::after { content: " ↑"; }

.pub .abstract {
  margin: .7rem 0 0;
  font-size: .89rem;
  line-height: 1.62;
  color: var(--ink-soft);
  max-width: var(--measure);
  padding-left: .9rem;
  border-left: 2px solid var(--rule);
}

/* ---- footer ---- */
footer {
  border-top: 1px solid var(--rule);
  padding: 1.5rem 0 3rem;
  font-size: .78rem;
  color: var(--ink-faint);
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
}
footer a { color: var(--ink-faint); text-decoration: none; }
footer a:hover { color: var(--accent); }
footer .right { margin-left: auto; }

/* ---- small screens ---- */
@media (max-width: 34rem) {
  body { font-size: 16px; }
  .wrap { padding: 0 1.25rem; }
  .hero { padding-top: 2.5rem; }

  /* Stack the header: the name gets its own line so it never wraps into
     the nav, and the nav sits underneath as a single quiet row. */
  .masthead {
    flex-direction: column;
    align-items: flex-start;
    gap: .85rem;
    padding-top: 1.75rem;
  }
  .masthead nav {
    margin-left: 0;
    gap: 1.1rem;
    font-size: .8rem;
    flex-wrap: wrap;
  }
  .news-item { grid-template-columns: 1fr; gap: .15rem; }
  .row-item { grid-template-columns: 1fr; }
  .row-item .when { margin-top: -.1rem; }
}

@media print {
  body { background: #fff; font-size: 11pt; }
  .masthead nav, footer .right { display: none; }
  .pub details[open] .abstract { border: 0; }
}

/* "All publications →" — a quiet lead-out, not a default browser link */
.more-link { margin: 1.6rem 0 0; font-size: .87rem; }
.more-link a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  transition: border-color .15s;
}
.more-link a:hover { border-bottom-color: var(--accent); }
.more-link span { transition: transform .15s; display: inline-block; }
.more-link a:hover span { transform: translateX(2px); }