/* ============================================================
   Cool Structured · single-column academic homepage
   Type: IBM Plex Sans only, hierarchy via weight
   Accent: blue → teal gradient (--grad) on a near-white cool ground
   All color tokens live in :root; edit there to retheme
   ============================================================ */

:root {
  --paper:     #fcfdfd;   /* page background (near white, slightly cool) */
  --ink:       #1b2126;   /* primary text */
  --ink-soft:  #333b42;   /* secondary text */
  --faded:     #7b8790;   /* muted text: affiliation, dates, years */
  --hairline:  #e5eaec;   /* divider lines */
  --blue:      #2270b4;   /* gradient start */
  --teal:      #0f9c88;   /* gradient end */
  --link:      #157d99;   /* body links (between blue and teal) */
  --grad:      linear-gradient(120deg, var(--blue), var(--teal));
  --pill-bg:   #ffffff;   /* pill button fill */
  --pill-line: #cfdde2;   /* pill button border */
  --thumb-solid: #e3ecee; /* thumbnail placeholder */
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:     #15191c;
    --ink:       #e4e8ea;
    --ink-soft:  #c3cbd1;
    --faded:     #8494a0;
    --hairline:  #2b3339;
    --blue:      #5b9fd8;
    --teal:      #3cbfab;
    --link:      #4cabbe;
    --pill-bg:   #1c2226;
    --pill-line: #37444c;
    --thumb-solid: #242c31;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 15.5px/1.7 "IBM Plex Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  /* 3px blue-teal gradient line across the top; the only large use of color */
  border-top: 3px solid transparent;
  border-image: linear-gradient(90deg, #2270b4, #0f9c88) 1;
}

.page {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 24px 48px;
}

a {
  color: var(--link);
  text-decoration: none;
}
a:hover, a:focus-visible { text-decoration: underline; text-underline-offset: 3px; }
a:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; border-radius: 2px; }

em { font-style: italic; }

/* ---------- Header: portrait on the left, beside the name ---------- */

.masthead {
  display: flex;
  gap: 28px;
  align-items: center;
  margin-bottom: 26px;
}

.avatar {
  width: 150px;
  height: 150px;
  flex: none;
  border-radius: 16px;
  background: url("assets/photo.jpg") center/cover no-repeat var(--thumb-solid);
  box-shadow: 0 6px 18px rgba(24, 68, 82, 0.18), 0 2px 6px rgba(24, 68, 82, 0.1);
}

h1 {
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.2;
  margin: 0 0 2px;
}

.affiliation {
  color: var(--faded);
  font-size: 15px;
  margin: 0 0 12px;
}

/* Outlined pill buttons */
.links { display: flex; flex-wrap: wrap; gap: 8px; }
.links a {
  font-size: 13px;
  font-weight: 500;
  color: var(--link);
  background: var(--pill-bg);
  border: 1px solid var(--pill-line);
  border-radius: 999px;
  padding: 4px 14px;
  transition: border-color 0.15s, color 0.15s;
}
.links a:hover, .links a:focus-visible {
  text-decoration: none;
  border-color: var(--teal);
  color: var(--teal);
}

.bio { margin: 0; color: var(--ink-soft); max-width: 640px; }
.bio + .bio { margin-top: 10px; }

/* ---------- Sections ---------- */

section { margin-top: 44px; }

h2 {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faded);
  margin: 0 0 6px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--hairline);
  position: relative;
}
/* Short gradient tick under each section heading */
h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 44px;
  height: 2px;
  background: var(--grad);
  border-radius: 1px;
}

/* ---------- Publications: year column + thumbnail + info ---------- */

.pub {
  display: grid;
  grid-template-columns: 56px 128px 1fr;
  gap: 20px;
  padding: 18px 0;
  align-items: start;
}
.pub + .pub { border-top: 1px solid var(--hairline); }

.year {
  color: var(--faded);
  font-size: 13.5px;
  font-variant-numeric: tabular-nums;
  padding-top: 3px;
}

.thumb {
  width: 128px;
  height: 80px;
  border-radius: 6px;
  border: 1px solid var(--hairline);
  /* Image comes from an inline style in the HTML; this fill shows if missing */
  background-color: var(--thumb-solid);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.pub-info { min-width: 0; }

.pub h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  margin: 0 0 3px;
}

.authors {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0 0 2px;
}
.authors .me {
  font-weight: 600;
  color: var(--ink);
}
.authors .eq {
  font-size: 0.75em;
  line-height: 0;
  color: var(--ink-soft);
}
.eq-note {
  color: var(--faded);
}

.venue {
  font-size: 13.5px;
  color: var(--faded);
  margin: 0 0 6px;
}

.pub-links { margin: 0; font-size: 13px; }
.pub-links a {
  font-weight: 600;
  margin-right: 14px;
}

/* ---------- Footer ---------- */

footer {
  margin-top: 56px;
  border-top: 1px solid var(--hairline);
  padding-top: 16px;
  font-size: 13px;
  color: var(--faded);
}
footer p { margin: 0; }

/* ---------- Placeholder marker; remove the spans once content is filled in ---------- */
.todo { color: #c05a3e; font-size: 13px; }

/* ---------- Mobile ---------- */

@media (max-width: 620px) {
  .page { padding-top: 36px; }
  .masthead { gap: 18px; }
  .avatar { width: 104px; height: 104px; }
  h1 { font-size: 25px; }
  .pub {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .year { padding-top: 0; }
  .thumb { width: 160px; height: 100px; }
}