@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,500;0,700;1,500&family=Source+Sans+3:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,300;0,400;0,500;0,700;1,400&family=JetBrains+Mono:wght@400;500&display=swap');
/* ── TOKENS ── */
:root {
  --bg:          #f8f7f4;
  --surface:     #ffffff;
  --surface-2:   #f2f0eb;
  --navy:        #162032;
  --navy-mid:    #243347;
  --navy-soft:   #3a5068;
  --accent:      #c0622a;
  --accent-warm: #d9782f;
  --accent-pale: #fdf0e7;
  --green:       #2e7d52;
  --green-pale:  #e8f5ee;
  --text:        #000000;
  --text-2:      #1a1a1a;
  --text-3:      #555555;
  --border:      #e0dbd2;
  --border-soft: #ece9e3;
  --nav-h:       62px;
  --radius:      6px;
  --shadow-sm:   0 1px 4px rgba(0,0,0,.06);
  --shadow:      0 4px 16px rgba(0,0,0,.09);
  --shadow-lg:   0 8px 30px rgba(0,0,0,.12);
  --font-serif:  'Playfair Display', Georgia, serif; 
  --font-serif: 'Roboto', sans-serif;
  --font-sans:  'Roboto', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 17px; }
body { font-family: var(--font-sans); background: var(--bg); color: var(--text); line-height: 1.3; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

/* ── NAV ── */
nav {
  position: sticky; top: 0; z-index: 200;
  background: var(--navy);
  height: var(--nav-h);
  display: flex; align-items: center;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
  gap: 1.5rem;
  box-shadow: 0 2px 20px rgba(0,0,0,.3);
}
.nav-brand {
  font-family: var(--font-serif);
  font-size: 1rem; font-style: bold;
  color: #fff; white-space: nowrap;
  margin-right: auto; letter-spacing: .01em;
  text-decoration: none;
  opacity: .95;
}
.nav-links { display: flex; gap: .15rem; align-items: center; }
.nav-links a {
  color: rgba(255,255,255,.65);
  font-size: .8rem; font-weight: 500;
  letter-spacing: .07em; text-transform: uppercase;
  padding: .45rem .7rem; border-radius: 3px;
  transition: color .18s, background .18s;
  text-decoration: none; white-space: nowrap;
}
.nav-links a:hover { color: #fff; background: rgba(255,255,255,.08); }
.nav-links a.active { color: var(--accent-warm); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-toggle span { display: block; width: 20px; height: 1.5px; background: rgba(255,255,255,.8); margin: 5px 0; border-radius: 2px; transition: .3s; }

/* ── LAYOUT ── */
.page-wrap { max-width: 900px; margin: 0 auto; padding: 3.5rem clamp(1rem, 4vw, 2rem) 6rem; }
.wide-wrap  { max-width: 1060px; margin: 0 auto; padding: 3.5rem clamp(1rem, 4vw, 2rem) 6rem; }

/* ── SECTION HEADER ── */
.sec-label {
  font-size: .72rem; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: .55rem;
}
.sec-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--navy); line-height: 1.0;
  margin-bottom: 2rem;
}
.sec-divider {
  font-size: .9rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-3);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .8rem;
  margin: 2rem 0 1rem;
  text-align: center;
}

.sec-divider::before,
.sec-divider::after {
  content: '';
  flex: 1;
  max-width: 220px;
  height: 1px;
  background: var(--border);
}

/* ── HOME HERO ── */
.hero {
  display: grid;
  grid-template-columns: 195px 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
  padding-bottom: 3rem;
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--border);
}
.hero-img-wrap { position: relative; }
.hero-photo {
  width: 210; height: 210px;
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: var(--shadow-lg); 
  display: block;
}
.hero-photo-placeholder {
  width: 195px; height: 195px;
  border-radius: var(--radius);
  background: var(--navy-mid);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.35); font-size: .78rem; text-align: center;
  border: 3px solid var(--surface);
  box-shadow: var(--shadow-lg);
}
.hero-name {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  color: var(--navy); font-weight: 700; line-height: 1.0;
  margin-bottom: .3rem;
}
.hero-role {
  font-size: .92rem; color: var(--text-3); font-weight: 400;
  margin-bottom: 1.3rem; letter-spacing: .01em; line-height: 1.15;
}
.hero-role strong { color: var(--text-2); font-weight: 500; }
.hero-contacts { display: flex; flex-direction: column; gap: .28rem; margin-bottom: 1.3rem; }
.hero-contacts a, .hero-contacts span {
  font-size: .88rem; color: var(--text-2);
  display: flex; align-items: center; gap: .4rem;
}
.hero-contacts a { color: var(--accent); }
.hero-contacts a:hover { text-decoration: underline; }
.contact-icon { width: 14px; height: 14px; opacity: .55; fill: currentColor; flex-shrink: 0; }
.hero-btns { display: flex; gap: .6rem; flex-wrap: wrap; margin-top: .5rem; }
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .42rem .95rem; border-radius: 3px;
  font-size: .8rem; font-weight: 600; letter-spacing: .05em;
  text-transform: uppercase; transition: all .18s; text-decoration: none;
  white-space: nowrap;
}
.btn-dark  { background: var(--navy); color: #fff; }
.btn-dark:hover  { background: var(--accent); color: #fff; text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.btn-ghost { background: transparent; color: var(--navy); border: 1.5px solid var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.btn svg { width: 13px; height: 13px; fill: currentColor; }

/* ── ALERT BANNER ── */
.banner {
  background: var(--text-2);
  color: rgba(255,255,255);
  padding: .9rem 1rem;
  border-radius: var(--radius);
  font-size: .9rem;
  border-left: 4px solid var(--accent-warm);
  line-height: 1.15;
  margin-top: 1rem;
  text-align: center;
}
.banner a { color: var(--accent-warm); }

/* ── ABOUT ── */
.about-text { font-size: .96rem; line-height: 1.4; color: var(--text); }
.about-text p + p { margin-top: .9em; }
.about-text a { color: var(--accent); }
.about-text strong { color: var(--text); font-weight: 600; }

/* ── SKILL PILLS ── */
.skill-group { margin-bottom: 1rem; }
.skill-label { font-size: .75rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--text-3); margin-bottom: .45rem; }
.pill-row { display: flex; flex-wrap: wrap; gap: .4rem; }
.pill {
  font-family: var(--font-mono);
  font-size: .73rem; font-weight: 500;
  background: var(--surface-2);
  color: var(--navy-soft);
  padding: .22rem .65rem;
  border-radius: 3px;
  border: 1px solid var(--border);
  letter-spacing: .02em;
}
.pill.highlight { background: var(--accent-pale); border-color: #e4b080; color: var(--accent); }

/* ── NEWS ── */
.news-list { list-style: none; display: flex; flex-direction: column; gap: .45rem; }
.news-item {
  display: grid; grid-template-columns: 105px 1fr;
  gap: 1rem; font-size: .85rem;
  padding: .65rem 1rem;
  background: var(--surface);
  border-radius: var(--radius);
  border-left: 3px solid transparent;
  box-shadow: var(--shadow-sm);
  transition: border-color .18s, box-shadow .18s;
}
.news-item:hover { border-left-color: var(--accent); box-shadow: var(--shadow); }
.news-item.award { border-left-color: var(--accent); background: var(--accent-pale); }
.news-date { font-size: .76rem; color: var(--text-3); font-weight: 500; padding-top: .15rem; }
.news-text { color: var(--text); line-height: 1.15; }
.news-text a { color: var(--accent); }
.badge {
  display: inline-block; background: var(--accent); color: #fff;
  font-size: .65rem; font-weight: 700; padding: .1rem .42rem;
  border-radius: 2px; letter-spacing: .06em; text-transform: uppercase;
  margin-right: .3rem; vertical-align: middle;
}
.badge.green { background: var(--green); }

/* ── PUBLICATIONS ── */
.pub-year-group { margin-bottom: 2.5rem; }
.year-tag {
  font-family: var(--font-mono);
  font-size: 1rem; font-weight: 500;
  color: var(--text-3); letter-spacing: .05em;
  border-bottom: 1px solid var(--border);
  padding-bottom: .4rem; margin-bottom: 1rem;
}
.pub-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  margin-bottom: .75rem;
  border: 1px solid var(--border-soft);
  border-left: 4px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: border-left-color .18s, box-shadow .18s;
}
.pub-card:hover { border-left-color: var(--accent); box-shadow: var(--shadow); }
.pub-card.award { border-left-color: var(--accent); background: var(--accent-pale); }
.pub-card.preprint { border-left-color: #8b9bb4; }
.pub-title { font-family: var(--font-serif); font-size: .97rem; color: var(--navy); font-weight: 500; line-height: 1.05; margin-bottom: .3rem; }
.pub-title a { color: inherit; } .pub-title a:hover { color: var(--accent); text-decoration: none; }
.pub-meta { font-size: .83rem; color: var(--text-3); margin-top: .2rem; }
.pub-venue { font-weight: 600; color: var(--navy-soft); }
.pub-award-tag {
  display: inline-flex; align-items: center; gap: .3rem;
  font-size: .73rem; font-weight: 600;
  background: var(--accent-pale); color: var(--accent);
  border: 1px solid #e4b080; padding: .15rem .5rem;
  border-radius: 3px; margin-top: .45rem;
}
.pub-links { display: flex; gap: .5rem; margin-top: .6rem; flex-wrap: wrap; }
.pub-link {
  font-size: .75rem; font-weight: 600; letter-spacing: .04em;
  padding: .2rem .6rem; border-radius: 3px;
  border: 1px solid var(--border);
  color: var(--navy-soft); background: var(--surface-2);
  transition: all .15s; text-decoration: none;
  display: inline-flex; align-items: center; gap: .3rem;
}
.pub-link:hover { background: var(--navy); color: #fff; border-color: var(--navy); text-decoration: none; }
.pub-link svg { width: 11px; height: 11px; fill: currentColor; }

/* ── PORTFOLIO GRID ── */
.portfolio-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.2rem;
}

.portfolio-grid > .proj-card,
.portfolio-grid > .port-card {
  width: calc((100% - 2.4rem) / 3);
  max-width: calc((100% - 2.4rem) / 3);
  min-width: 270px;
  flex: 0 0 calc((100% - 2.4rem) / 3);
}

/* existing project cards */
.proj-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow .2s, transform .18s;
}
.proj-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.proj-card-top {
  padding: 1.2rem 1.3rem 1rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  border-left: 4px solid var(--border);
}
.proj-card-top.hci   { border-left-color: #4a7cbb; }
.proj-card-top.cv    { border-left-color: #7b5ea7; }
.proj-card-top.llm   { border-left-color: var(--green); }
.proj-card-top.sys   { border-left-color: var(--accent); }

.proj-cat {
  font-size: .67rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: .5rem;
}
.proj-cat.hci  { color: #4a7cbb; }
.proj-cat.cv   { color: #7b5ea7; }
.proj-cat.llm  { color: var(--green); }
.proj-cat.sys  { color: var(--accent); }

.proj-title {
  font-family: var(--font-serif);
  font-size: 1.02rem;
  color: var(--navy);
  font-weight: 500;
  line-height: 1.0;
  margin-bottom: .55rem;
}
.proj-desc {
  font-size: .84rem;
  color: var(--text);
  line-height: 1.25;
  flex: 1;
}
.proj-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
  margin-top: .75rem;
}
.proj-tag {
  font-family: var(--font-mono);
  font-size: .66rem;
  background: var(--surface-2);
  color: var(--text-3);
  padding: .15rem .45rem;
  border-radius: 2px;
  border: 1px solid var(--border);
  letter-spacing: .01em;
}
.proj-card-footer {
  padding: .75rem 1.3rem;
  border-top: 1px solid var(--border-soft);
  background: var(--surface-2);
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  align-items: center;
}
.proj-badge {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  padding: .15rem .5rem;
  border-radius: 2px;
}
.proj-badge.award {
  background: var(--accent-pale);
  color: var(--accent);
  border: 1px solid #e4b080;
}
.proj-badge.preprint {
  background: #eef2f8;
  color: #5a7daa;
  border: 1px solid #c5d5e8;
}

/* ── IMAGE-BASED PORTFOLIO CARDS ── */

@media (max-width: 900px) {
  .portfolio-grid > .proj-card,
  .portfolio-grid > .port-card {
    width: calc((100% - 1.2rem) / 2);
    max-width: calc((100% - 1.2rem) / 2);
    flex: 0 0 calc((100% - 1.2rem) / 2);
  }
}

@media (max-width: 640px) {
  .portfolio-grid > .proj-card,
  .portfolio-grid > .port-card {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    flex: 0 0 100%;
  }
}

/* ── EXPERIENCE ── */
.exp-item {
  display: grid; grid-template-columns: 1fr auto;
  gap: .7rem; align-items: start;
  background: var(--surface);
  padding: 1.3rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  margin-bottom: .85rem;
}
.exp-role { font-family: var(--font-serif); font-size: 1.02rem; color: var(--navy); font-weight: 500; }
.exp-org  { font-size: .88rem; color: var(--text-3); margin-top: .1rem; }
.exp-date { font-size: .8rem; font-family: var(--font-mono); color: var(--text-3); white-space: nowrap; margin-top: .15rem; }
.exp-bullets { list-style: none; margin-top: .8rem; display: flex; flex-direction: column; gap: .4rem; grid-column: 1 / -1; }
.exp-bullets li { font-size: .875rem; color: var(--text); line-height: 1.35; padding-left: 1.1em; position: relative; }
.exp-bullets li::before { content: '→'; position: absolute; left: 0; color: var(--accent); font-size: .8rem; top: .05em; }

/* ── EDUCATION ── */
.edu-card {
  display: grid; grid-template-columns: 1fr auto;
  gap: .7rem; align-items: start;
  background: var(--surface);
  padding: 1.3rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-sm);
  margin-bottom: .85rem;
}
.edu-degree { font-family: var(--font-serif); font-size: 1.02rem; color: var(--navy); font-weight: 500; }
.edu-school { font-size: .88rem; color: var(--text-3); margin-top: .15rem; line-height: 1.05; }
.edu-year   { font-family: var(--font-mono); font-size: .8rem; color: var(--text-3); white-space: nowrap; text-align: right; margin-top: .1rem; }
.edu-gpa    { font-size: .82rem; color: var(--green); font-weight: 600; margin-top: .3rem; }

/* ── CV PAGE ── */
.cv-download-block {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  border-radius: var(--radius); padding: 2.5rem;
  text-align: center; margin-bottom: 2.5rem;
  box-shadow: var(--shadow-lg);
}
.cv-download-block h2 { font-family: var(--font-serif); color: #fff; font-size: 1.4rem; margin-bottom: .5rem; }
.cv-download-block p { color: rgba(255,255,255,.6); font-size: .9rem; margin-bottom: 1.5rem; }

/* ── FOOTER ── */
footer {
  background: var(--navy);
  color: rgba(255,255,255,.4);
  text-align: center; padding: 1.6rem;
  font-size: .78rem; letter-spacing: .05em;
}
footer a { color: rgba(255,255,255,.6); }
footer a:hover { color: var(--accent-warm); text-decoration: none; }

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  .hero { grid-template-columns: 1fr; text-align: center; }
  .hero-img-wrap { display: flex; justify-content: center; }
  .hero-contacts { align-items: center; }
  .hero-btns { justify-content: center; }
  .news-item { grid-template-columns: 1fr; gap: .15rem; }
  .nav-links { display: none; flex-direction: column; position: absolute; top: var(--nav-h); left: 0; right: 0; background: var(--navy); padding: 1rem 1.5rem 1.5rem; gap: .25rem; box-shadow: 0 8px 20px rgba(0,0,0,.3); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .exp-item, .edu-card { grid-template-columns: 1fr; }
  .exp-date, .edu-year { text-align: left; }
}

@media (max-width: 900px) {
  div[style*="grid-template-columns:1fr 340px"] {
    grid-template-columns: 1fr !important;
  }
  aside[style*="border-left"] {
    border-left: none !important;
    border-top: 1px solid var(--border);
  }
  aside > div[style*="position:sticky"] {
    position: static !important;
    max-height: none !important;
  }
}

.modal-header-noimage {
  position: relative;
  min-height: 16px;
}
.port-card-desc {font-size: .84rem; color: var(--text); line-height: 1.25; flex: 1;}