/* Layout: academic CV page under a dark masthead. The masthead pairs the name with a live point cloud
   (the author's research subject); below it, sections are a narrow label column + wide content column.
   Boldness lives in the masthead only; the rest stays quiet. */
:root {
  --bg: #f5f6f8; --surface: #ffffff; --ink: #14213d; --muted: #566175; --line: #d9dee6;
  --accent: #0b6e6e; --amber: #9a4d06; --amber-soft: #fbeedd; --accent-soft: #e3f1f0;
  --hero-bg: #0c1a2b; --hero-ink: #eef3f8; --hero-muted: #a9b8cc; --hero-accent: #6ed6c8; --hero-amber: #f5b04c; --hero-line: #243a54;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Source Sans 3", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0b131d; --surface: #141e2b; --ink: #e8edf3; --muted: #a2adbf; --line: #28344a; --accent: #5fc9bd; --amber: #f5b04c; --amber-soft: #3a2a12; --accent-soft: #14312f; --hero-bg: #08111c; color-scheme: dark; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 4rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.65 var(--sans); }
a { color: var(--accent); text-underline-offset: .18em; }
.wrap { max-width: 64rem; margin: 0 auto; padding-inline: 1.25rem; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 3px; }

header.top { position: sticky; top: 0; z-index: 10; background: var(--bg); border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 3.4rem; }
.brand { font: 600 1.05rem var(--serif); color: var(--ink); text-decoration: none; white-space: nowrap; }
nav { display: flex; gap: 1.1rem; overflow-x: auto; scrollbar-width: none; }
nav a { color: var(--muted); text-decoration: none; font-size: .95rem; white-space: nowrap; padding-block: .3rem; border-bottom: 2px solid transparent; }
nav a:hover { color: var(--ink); border-bottom-color: var(--accent); }

/* masthead */
.hero { background: var(--hero-bg); color: var(--hero-ink); border-bottom: 4px solid var(--hero-accent); }
.hero .wrap { display: grid; gap: 1.5rem 2rem; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); align-items: center; padding-block: 3.5rem; }
.label { font: 500 .78rem var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--hero-accent); }
h1 { font: 600 clamp(2.5rem, 6vw, 4rem)/1.06 var(--serif); letter-spacing: -.01em; margin: .6rem 0 1rem; text-wrap: balance; }
.lead { font-size: 1.2rem; color: var(--hero-muted); max-width: 32rem; margin: 0 0 1.2rem; }
.chips { display: flex; flex-wrap: wrap; gap: .45rem; margin-bottom: 1.6rem; }
.chip { font: 500 .78rem var(--mono); padding: .25rem .65rem; border: 1px solid var(--hero-line); border-radius: 3px; color: var(--hero-ink); }
.cta { display: flex; flex-wrap: wrap; gap: .7rem; margin-bottom: 2rem; }
.btn { display: inline-block; padding: .6rem 1.2rem; border-radius: 4px; font-weight: 600; text-decoration: none; background: var(--hero-accent); color: #08202a; border: 1px solid var(--hero-accent); }
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--hero-ink); border-color: var(--hero-line); }
.btn.ghost:hover { border-color: var(--hero-accent); }
dl.stats { display: flex; flex-wrap: wrap; gap: 1.2rem 2.2rem; margin: 0; padding-top: 1.4rem; border-top: 1px solid var(--hero-line); }
dl.stats dt { font: 500 .7rem var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--hero-muted); }
dl.stats dd { margin: .1rem 0 0; font: 600 1.7rem/1.2 var(--serif); }
.cloud { width: 100%; height: clamp(16rem, 34vw, 26rem); display: block; }
.cloud-fig { margin: 0; }
.cloud-fig figcaption { margin-top: .4rem; font: 500 .72rem var(--mono); color: var(--hero-muted); text-align: center; }
.toggle { display: block; margin: .5rem auto 0; background: transparent; color: var(--hero-ink); border: 1px solid var(--hero-line); border-radius: 4px; padding: .3rem .8rem; font: 500 .75rem var(--mono); cursor: pointer; }
.toggle:hover { border-color: var(--hero-accent); }
.hero :focus-visible { outline-color: var(--hero-accent); }

/* sections */
section.block { display: grid; gap: 1rem 2.5rem; grid-template-columns: 11rem minmax(0, 1fr); padding-block: 3.2rem; border-bottom: 1px solid var(--line); }
section.block > h2 { font: 600 1.35rem/1.25 var(--serif); margin: 0; text-wrap: balance; }
section.block > h2 small { display: block; margin-top: .35rem; font: 400 .9rem var(--sans); color: var(--muted); }
.body > * + * { margin-top: 1.6rem; }
.body p { margin: 0; max-width: 40rem; }
.body p + p { margin-top: 1rem; }
.body h3 { font: 600 .78rem var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin: 0 0 .5rem; }

.about-row { display: grid; gap: 1.5rem 2.5rem; grid-template-columns: minmax(0, 1fr) 11.5rem; align-items: start; }
.avatar { width: 100%; height: auto; aspect-ratio: 1; object-fit: cover; border-radius: 6px; border: 1px solid var(--line); display: block; }
.course { display: grid; grid-template-columns: 4.2rem minmax(0, 1fr); gap: 1rem; padding-block: 1.15rem; border-top: 1px solid var(--line); }
.course:last-child { border-bottom: 1px solid var(--line); }
.course .code { font: 500 .9rem var(--mono); color: var(--accent); padding-top: .15rem; }
.course h3 { font: 600 1.1rem/1.35 var(--serif); margin: 0 0 .2rem; text-transform: none; letter-spacing: 0; color: var(--ink); }
.course p { color: var(--muted); font-size: .98rem; }
.tags { margin-top: .45rem; font: 500 .75rem var(--mono); color: var(--muted); }

ul.list { list-style: none; margin: 0; padding: 0; }
ul.list li { display: grid; grid-template-columns: 6.5rem minmax(0, 1fr); gap: 1rem; padding-block: .8rem; border-top: 1px solid var(--line); }
ul.list li:last-child { border-bottom: 1px solid var(--line); }
.when { font: 500 .85rem var(--mono); color: var(--muted); padding-top: .12rem; }
.what a, .what strong { font-weight: 600; }
.meta { color: var(--muted); font-size: .92rem; }
.empty { color: var(--muted); margin: 0; padding-block: .8rem; border-block: 1px dashed var(--line); font-size: .95rem; }

.pub .when { color: var(--accent); }
.badges { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .35rem; align-items: center; }
.badge { font: 500 .7rem var(--mono); letter-spacing: .03em; padding: .1rem .5rem; border-radius: 3px; background: var(--accent-soft); color: var(--accent); }
.badge.rank { background: var(--amber-soft); color: var(--amber); }

form { max-width: 32rem; }
form label { display: block; font-weight: 600; font-size: .92rem; margin-top: 1rem; }
form input, form textarea { width: 100%; margin-top: .3rem; padding: .6rem .75rem; border: 1px solid var(--line); border-radius: 4px; background: var(--surface); color: var(--ink); font: inherit; }
form button { margin-top: 1.1rem; background: var(--accent); color: var(--bg); border: 0; padding: .65rem 1.4rem; border-radius: 4px; font: 600 1rem var(--sans); cursor: pointer; }
form button:hover { filter: brightness(1.1); }
form button:disabled { opacity: .6; cursor: wait; }
#kq { min-height: 1.5rem; margin: .7rem 0 0; font-weight: 600; }
.note { font-size: .86rem; color: var(--muted); }

.links { display: flex; flex-wrap: wrap; gap: .5rem 1.2rem; }
footer { padding-block: 2rem 3rem; color: var(--muted); font-size: .88rem; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem; }

@media (max-width: 760px) {
  .hero .wrap, section.block { grid-template-columns: minmax(0, 1fr); }
  .hero .wrap { padding-block: 2.2rem; }
  .cloud { height: 17rem; }
  .about-row { grid-template-columns: minmax(0, 1fr); }
  .avatar { order: -1; width: 8.5rem; }
  section.block { padding-block: 2.2rem; }
  ul.list li { grid-template-columns: 5.2rem minmax(0, 1fr); }
}