/* =========================================================
   Personal site stylesheet
   Palette and fonts live in the :root block below.
   ========================================================= */

:root {
  --paper:      #FFFDFB;
  --surface:    #FFFFFF;
  --ink:        #33302C;
  --ink-soft:   #6E6862;
  --rule:       #EAE4DC;

  --pink:       #FF2D7A;
  --pink-deep:  #D6005A;
  --blue:       #2B5CFF;
  --blue-deep:  #1B3FD1;

  --font: "Poppins", system-ui, -apple-system, sans-serif;

  --measure: 62ch;
  --gutter: clamp(1.5rem, 6vw, 5.5rem);
  --shell: 1080px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-weight: 400;
  font-size: 1.02rem;
  line-height: 1.72;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--pink); color: #fff; }

img { max-width: 100%; display: block; }

a { color: var(--ink); text-decoration-thickness: 1px; text-underline-offset: 4px; transition: color 0.2s ease; }
a:hover { color: var(--pink-deep); }

:focus-visible { outline: 2px solid var(--pink); outline-offset: 4px; border-radius: 2px; }

.shell { width: 100%; max-width: var(--shell); margin-inline: auto; padding-inline: var(--gutter); }

.skip-link { position: absolute; left: -9999px; background: var(--ink); color: #fff; padding: 0.6rem 1rem; z-index: 99; }
.skip-link:focus { left: 1rem; top: 1rem; }

/* ---------- top bar ---------- */

.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 253, 251, 0.92);
  backdrop-filter: blur(10px);
}

.topbar__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; min-height: 74px;
}

.wordmark {
  font-size: 1.02rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
  text-decoration: none;
}
.wordmark:hover { color: var(--pink-deep); }

.nav { display: flex; gap: clamp(1.1rem, 3vw, 2.4rem); }

.nav a {
  font-size: 0.88rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  text-decoration: none;
  padding: 0.3rem 0;
  position: relative;
}
.nav a::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 2px; background: var(--pink);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after, .nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav a[aria-current="page"] { color: var(--ink); }

/* ---------- typography ---------- */

h1, h2, h3 { font-weight: 300; line-height: 1.14; margin: 0 0 1.1rem; letter-spacing: -0.015em; }
h1 { font-size: clamp(2.4rem, 5.5vw, 3.6rem); }
h2 { font-size: clamp(1.55rem, 3vw, 2.1rem); }
h3 { font-size: 1.16rem; font-weight: 500; line-height: 1.45; letter-spacing: 0; margin-bottom: 0.5rem; }

h1.pink { color: var(--pink); }
.hilite { color: var(--pink); }
.hilite--blue { color: var(--blue); }

p { max-width: var(--measure); margin: 0 0 1.35rem; }
.lede { font-size: 1.06rem; color: var(--ink-soft); }
.muted { color: var(--ink-soft); }

/* the short accent dash used under section headings */
.dash { width: 46px; height: 3px; background: var(--pink); border: 0; margin: 0 0 1.4rem; }
.dash--blue { background: var(--blue); }
.dash--right { margin-left: auto; }

/* status flag next to a title, e.g. (Accepted) */
.status { color: var(--pink); font-style: italic; font-weight: 400; font-size: 0.92em; }

/* fill-me-in marker */
.todo { color: var(--pink-deep); }

.section { padding-block: clamp(2rem, 4vw, 3rem); }
.section--tight { padding-block: clamp(1.2rem, 2.5vw, 1.8rem); }
.section--first { padding-top: clamp(1.8rem, 4vw, 2.8rem); }

/* ---------- hero ---------- */

.hero { padding-block: clamp(3rem, 9vw, 6rem) clamp(2rem, 5vw, 3.5rem); }
.hero h1 { margin-bottom: 2.2rem; }
.hero p { font-size: 1.05rem; }
.hero__grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
.hero__grid .portrait { max-width: 100%; }
@media (max-width: 760px) { .hero__grid { grid-template-columns: 1fr; } .hero__grid .portrait { max-width: 250px; } }

.linkrow { display: flex; flex-wrap: wrap; gap: 1.6rem; margin-top: 2.2rem; padding: 0; list-style: none; }
.linkrow a {
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 1.5px solid var(--rule);
  transition: border-color 0.22s ease, color 0.22s ease;
}
.linkrow a:hover { color: var(--pink-deep); border-color: var(--pink); }

/* ---------- research blocks ---------- */

.blocks { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: clamp(2rem, 4vw, 3.2rem); margin-top: 1rem; }

.block__no {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  color: var(--pink);
  display: block;
  margin-bottom: 0.9rem;
}
.blocks > div:nth-child(2) .block__no { color: var(--blue); }
.blocks > div:nth-child(3) .block__no { color: var(--ink-soft); }
.blocks p { font-size: 0.97rem; color: var(--ink-soft); margin-bottom: 0; }

/* ---------- publication and news entries ---------- */

.entries { list-style: none; margin: 0; padding: 0; }

.entry {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(2rem, 4vw, 3.2rem);
  align-items: start;
}
.entry + .entry { border-top: 1px solid var(--rule); }

.entry__thumb { background: #F4F1EC; border-radius: 3px; overflow: hidden; aspect-ratio: 4 / 3; }
.entry__thumb img { width: 100%; height: 100%; object-fit: cover; }

.entry__title { font-size: 1.3rem; font-weight: 400; line-height: 1.4; letter-spacing: -0.005em; margin: 0 0 0.5rem; }
.entry__authors { font-size: 0.95rem; font-style: italic; color: var(--ink); margin: 0 0 0.7rem; }
.entry__authors strong { font-weight: 600; font-style: italic; }
.entry__body { font-size: 0.95rem; color: var(--ink-soft); margin: 0; line-height: 1.85; }
.entry__links { margin-top: 1rem; display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: baseline; font-size: 0.9rem; }
.entry__venue { color: var(--pink); }

/* text-only entry rows, for news / teaching / service */
.entry--plain { grid-template-columns: 132px minmax(0, 1fr); padding-block: 1.5rem; }
.entry--plain .entry__meta { font-size: 0.88rem; color: var(--ink-soft); }
.entry--plain .entry__title { font-size: 1.1rem; }

/* year-only meta column, colored like the publications year headings */
.entry--award .entry__meta { color: var(--pink-deep); font-weight: 500; }

/* ---------- layout helpers ---------- */

.split { display: grid; grid-template-columns: repeat(auto-fit, minmax(275px, 1fr)); gap: clamp(2rem, 5vw, 4rem); align-items: start; }

.figure { margin: 0; background: #F4F1EC; border-radius: 3px; overflow: hidden; }
.figure img { width: 100%; }
.figure figcaption { font-size: 0.85rem; color: var(--ink-soft); padding: 0.85rem 0.2rem; }

.portrait { max-width: 300px; border-radius: 3px; overflow: hidden; background: #F4F1EC; aspect-ratio: 4 / 5; }
.portrait img { width: 100%; height: 100%; object-fit: cover; }

.callout { border-left: 3px solid var(--pink); padding: 0.2rem 0 0.2rem 1.6rem; }
.callout p:last-child { margin-bottom: 0; }

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

.footer { margin-top: clamp(3rem, 7vw, 5.5rem); padding-block: 2.5rem 4rem; border-top: 1px solid var(--rule); }
.footer p { font-size: 0.86rem; color: var(--ink-soft); margin: 0; }

/* ---------- scroll reveal ---------- */

.reveal { opacity: 0; transform: translateY(18px); }
.reveal.is-visible {
  opacity: 1; transform: none;
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal.is-visible { opacity: 1; transform: none; transition: none; }
}

/* ---------- responsive ---------- */

@media (max-width: 760px) {
  body { line-height: 1.68; }
  .entry { grid-template-columns: 1fr; gap: 1.2rem; }
  .entry__thumb { max-width: 320px; }
  .entry--plain { grid-template-columns: 1fr; gap: 0.3rem; }
  .topbar__inner { flex-direction: column; align-items: flex-start; gap: 0.25rem; padding-block: 0.9rem; min-height: 0; }
  .nav { flex-wrap: wrap; }
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.hero__grid > div:first-child p { max-width: none; }
.hero__grid .portrait { max-width: 100%; }
@media (max-width: 760px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__grid .portrait { max-width: 250px; }
}

.cite-list { list-style: none; margin: 0; padding: 0; }
.cite { margin: 0 0 2rem; max-width: 76ch; }
.cite:last-child { margin-bottom: 0; }
.cite p { max-width: none; margin: 0; font-size: 0.97rem; line-height: 1.8; color: var(--ink-soft); }
.cite strong { color: #C97A93; font-weight: 600; }
.cite__title { color: var(--ink); font-weight: 400; }
.cite__year { font-size: 0.8rem; font-weight: 500; letter-spacing: 0.16em; color: var(--pink-deep); margin: 2.8rem 0 1.5rem; }
.cite__year--first { margin-top: 1.4rem; }
.cite__award { color: var(--pink); font-weight: 500; }
.cite__note { font-size: 0.9rem; }

.cite-btn {
  font: inherit;
  font-size: 0.97rem;
  color: var(--ink);
  background: none;
  border: 0;
  padding: 0;
  margin: 0;
  cursor: pointer;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  text-decoration: underline;
  transition: color 0.2s ease;
}
.cite-btn:hover { color: var(--pink-deep); }
.cite-btn.is-copied { color: var(--blue-deep); }

/* ---------- Google Scholar button ---------- */

.scholar-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.86rem;
  color: var(--ink);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border: 1.5px solid var(--rule);
  border-radius: 999px;
  margin: 0 0 1.8rem;
  transition: border-color 0.22s ease, color 0.22s ease, background 0.22s ease;
}
.scholar-btn svg { flex: none; }
.scholar-btn:hover { color: var(--pink-deep); border-color: var(--pink); background: #FFF6FA; }

/* ---------- News: collapsed "Recent" entries + more/less toggle ---------- */

.is-collapsed { display: none; }

.more-btn {
  display: inline-flex;
  align-items: center;
  font: inherit;
  font-size: 0.86rem;
  color: var(--ink);
  background: none;
  cursor: pointer;
  padding: 0.5rem 1rem;
  border: 1.5px solid var(--rule);
  border-radius: 999px;
  margin-top: 1.6rem;
  transition: border-color 0.22s ease, color 0.22s ease, background 0.22s ease;
}
.more-btn:hover { color: var(--pink-deep); border-color: var(--pink); background: #FFF6FA; }

/* ---------- tighter publications list ---------- */

#page-publications .cite { margin-bottom: 1.1rem; }
#page-publications .cite p { line-height: 1.6; }
#page-publications .cite__year { margin: 1.8rem 0 0.9rem; }
#page-publications .cite__year--first { margin-top: 0.6rem; }

/* ---------- tighter honors & awards list ---------- */

#page-honors .entry--plain { padding-block: 0.9rem; }
#page-honors .entry__body { line-height: 1.6; }

.section--first h1 { font-size: clamp(2.2rem, 4.5vw, 3.2rem); }
.section--first { padding-top: 2rem; padding-bottom: 0; }