/* Tokens ------------------------------------------------------------ */
:root {
  --bg: #ffffff;
  --ink: #16181d;
  --ink-2: #3d424d;
  --muted: #6b707c;
  --line: #e7e7ea;
  --accent: #2f55d4;
  --accent-soft: #e6edfd;
  --surface: #f8f8f9;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --maxw: 980px;
  --gutter: 28px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --ink: #eceef2;
    --ink-2: #c3c7cf;
    --muted: #9298a4;
    --line: #262a33;
    --accent: #8ea6ff;
    --accent-soft: rgba(142, 166, 255, 0.14);
    --surface: #181b21;
    color-scheme: dark;
  }
}

/* Base -------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 18.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

h1, h2, p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[id] { scroll-margin-top: 80px; }

/* Header ------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
  white-space: nowrap;
}
.brand:hover { text-decoration: none; }
.nav { display: flex; gap: 22px; }
.nav a { font-size: 16.5px; font-weight: 500; color: var(--muted); }
.nav a:hover { color: var(--ink); text-decoration: none; }
.nav a[aria-current="page"] { color: var(--ink); }

/* Layout ------------------------------------------------------------ */
main { flex: 1; width: 100%; }
.page {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 56px var(--gutter) 72px;
}

.label {
  font-family: var(--mono);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  padding-bottom: 8px;
  margin: 0 0 18px;
  border-bottom: 1px solid var(--line);
}
* + .label { margin-top: 44px; }

/* Home -------------------------------------------------------------- */
.intro { display: flow-root; }
.name {
  font-family: var(--mono);
  font-size: clamp(32px, 5.8vw, 46px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}
.subtitle { color: var(--muted); margin: 6px 0 28px; }
.bio p { color: var(--ink-2); margin-bottom: 14px; }
.bio em { color: var(--ink); }

.links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: color .15s, background-color .15s, border-color .15s;
}
.links a:hover {
  text-decoration: none;
  color: var(--accent);
  background: var(--accent-soft);
  border-color: var(--accent);
}
.links svg { width: 18px; height: 18px; flex: none; }

.portrait {
  float: left;
  width: 260px;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  margin: 4px 36px 16px 0;
  border-radius: 6px;
  box-shadow: 0 4px 14px rgba(20, 22, 28, 0.12);
}

.columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 48px;
  margin-top: 56px;
}
.columns .label { margin-top: 0; }
.columns aside .label:not(:first-child) { margin-top: 36px; }

.news li {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 14px;
  padding: 6px 0;
  font-size: 17.5px;
  color: var(--ink-2);
}
.news time { font-family: var(--mono); font-size: 14.5px; color: var(--muted); padding-top: 2px; }

.plain li { font-size: 17px; color: var(--ink-2); padding: 4px 0; }
.coursework { font-size: 16px; color: var(--ink-2); line-height: 1.6; margin-top: 10px; }

/* Skills ------------------------------------------------------------ */
.skills { margin: 0; }
.skills div {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 20px;
  padding: 6px 0;
  font-size: 17.5px;
}
.skills dt { font-weight: 600; }
.skills dd { margin: 0; color: var(--ink-2); }

/* Entries (publications, experience, projects) ----------------------- */
.entries > li + li { margin-top: 26px; }

.with-logo {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}
.logo {
  width: 48px;
  height: 48px;
  padding: 5px;
  object-fit: contain;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  margin-top: 2px;
}
.row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 4px 20px;
  flex-wrap: wrap;
}
.row time, .stack { font-family: var(--mono); font-size: 14.5px; color: var(--muted); }
.item-title { font-weight: 600; line-height: 1.45; }
.item-title a { color: var(--ink); }
.item-sub { font-size: 17px; color: var(--muted); margin-top: 2px; }
.item-sub strong { color: var(--ink); font-weight: 600; }
.item-text { font-size: 17.5px; color: var(--ink-2); margin-top: 6px; }
.item-links { display: flex; gap: 16px; margin-top: 8px; font-size: 16.5px; font-weight: 500; }

/* CV ---------------------------------------------------------------- */
.cv-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 16px 24px;
  margin-bottom: 8px;
}
.cv-title {
  font-family: var(--mono);
  font-size: clamp(28px, 4.4vw, 36px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}
.cv-contact { font-size: 16px; color: var(--muted); margin-top: 8px; }
.cv-head .links { margin-top: 0; }

.bullets { list-style: disc; padding-left: 22px; margin-top: 6px; }
.bullets li { font-size: 17px; color: var(--ink-2); margin-top: 3px; }
.bullets li::marker { color: var(--muted); }

.tag { font-family: var(--mono); font-size: 0.85em; font-weight: 500; color: var(--muted); margin-right: 4px; }

.entries.tight > li + li { margin-top: 10px; }
.tight .row span { font-size: 17px; color: var(--ink-2); }

/* Footer ------------------------------------------------------------ */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px var(--gutter);
  text-align: center;
  font-size: 15px;
  color: var(--muted);
}

/* Small screens ----------------------------------------------------- */
@media (max-width: 720px) {
  :root { --gutter: 16px; }
  .header-inner { height: 56px; }
  .nav { gap: 16px; }
  .page { padding-top: 36px; padding-bottom: 56px; }
  .portrait { float: none; display: block; width: min(100%, 280px); margin: 0 0 24px; }
  .columns { grid-template-columns: 1fr; gap: 0; margin-top: 44px; }
  .columns aside .label:first-child { margin-top: 44px; }
  .news li { grid-template-columns: 1fr; gap: 0; }
  .skills div { grid-template-columns: 1fr; gap: 0; padding: 8px 0; }
  .with-logo { grid-template-columns: 40px minmax(0, 1fr); gap: 14px; }
  .links { gap: 8px; }
  .links a { padding: 6px 11px; font-size: 15px; gap: 6px; }
  .links svg { width: 16px; height: 16px; }
  .logo { width: 40px; height: 40px; padding: 4px; }
}

@media (max-width: 440px) {
  .header-inner { height: auto; flex-wrap: wrap; row-gap: 4px; padding-top: 12px; padding-bottom: 10px; }
  .nav { width: 100%; }
}